WO2019134570A1 - Method for measuring channel state information, terminal device, and network device - Google Patents
Method for measuring channel state information, terminal device, and network device Download PDFInfo
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- WO2019134570A1 WO2019134570A1 PCT/CN2018/123960 CN2018123960W WO2019134570A1 WO 2019134570 A1 WO2019134570 A1 WO 2019134570A1 CN 2018123960 W CN2018123960 W CN 2018123960W WO 2019134570 A1 WO2019134570 A1 WO 2019134570A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
Definitions
- the present application relates to the field of communications and, more particularly, to a method of measuring channel state information, a terminal device, and a network device.
- Coordination Multiple Point (CoMP) transmission is a method for solving inter-cell interference problems and improving cell edge user throughput.
- a network device communicates with a terminal device, it may not know whether there are other network devices and several other network devices that communicate with the terminal device. Therefore, the network device may be to the terminal device.
- the interference measurement assumptions are indicated such that the terminal device performs channel state information (CSI) measurement and feedback separately according to various interference measurement assumptions.
- the network device in turn, can determine the transmission scheme based on the CSI measured and fed back under various interference measurement assumptions, and adaptively adjust the scheduling strategy.
- the network device may indicate various interference measurement assumptions to the terminal device by using downlink control information. For example, if S (S ⁇ 1, S is an integer) interference measurement assumptions are to be indicated, the network device needs S indications, and one or more interference measurement resources are indicated in each indication, and there is a large signaling. Overhead. As the number of cooperatively transmitted stations increases, the interference measurement assumptions also increase, and the resulting signaling overhead is also more serious.
- the present application provides a method for measuring channel state information, a terminal device, and a network device, which can reduce signaling overhead.
- a method for measuring channel state information including:
- the terminal device receives downlink control information, where the downlink control information carries measurement information for channel state information CSI measurement, and the measurement information includes at least indication information of a channel state information reference signal CSI-RS resource configuration, the CSI-RS
- the resource configuration indication information is used to indicate a CSI-RS resource
- the terminal device receives a downlink control information in the preset time period, the terminal device performs CSI measurement based on the measurement information carried in the one downlink control information, and otherwise, based on at least two received in the preset time period.
- the measurement information carried in the downlink control information is subjected to each CSI measurement.
- the plurality of downlink control information is received in the preset time period, and the terminal device performs each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period;
- a downlink control information is received in the preset time period, and the terminal device performs CSI measurement only based on the measurement information carried in the one downlink control information.
- the terminal device performs multiple CSI measurement on the measurement information carried by the at least two downlink control information of the multiple downlink control information received in the preset time period, and each CSI in the multiple CSI measurement
- the measurement may be performed based on the measurement information carried by the at least two downlink control information of the multiple downlink control information, and the at least two downlink control information on which the CSI measurement is based may be different.
- CSI measurements can be classified into two types of measurement: single site based CSI measurement and multi site based CSI measurement.
- the CSI measurement may be performed based on the measurement information carried in one downlink control information; in the multi-site based CSI measurement, each CSI measurement may be performed based on the measurement information carried in the multiple downlink control information.
- the measurement type may include: CSI measurement based on measurement information carried in at least two downlink control information, or CSI measurement based on measurement information carried in one downlink control information.
- the terminal device may perform CSI measurement based on different measurement types according to the quantity of downlink control information received within a preset time period. Therefore, the network equipment does not need additional signaling overhead to indicate various interference measurement assumptions, but the terminal device autonomously determines the measurement type, which can greatly save signaling overhead. Moreover, the measurement type thus determined can obtain more accurate CSI feedback to the network device, thereby facilitating the network device to determine a reasonable transmission scheme and scheduling strategy, that is, improving the reliability of data transmission and improving system performance.
- each CSI measurement based on the measurement information carried by the at least two downlink control information received in the preset time period including:
- the terminal device performs the CSI measurement according to the measurement information carried in the N downlink control information received in the preset time period, where the N pieces of downlink control information are other than the nth downlink control information.
- the CSI-RS resource indicated by the downlink control information is an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information, and the nth downlink control information is that the terminal device is in the preset time period.
- One of the plurality of downlink control information received, N ⁇ n ⁇ 1, N ⁇ 2, and n and N are integers.
- the terminal device receives M downlink control information within the preset time period, M ⁇ N ⁇ 2, and M and N are integers.
- the N downlink control information is part or all of the M downlink control information.
- the M downlink control information may be in one-to-one correspondence with the M network devices. If the terminal device receives downlink control information from the M network devices within a preset time period, each of the M network devices may be used.
- the network device performs multi-site based CSI measurement, and may also perform multi-site based measurement for each of a part of the network devices of the M network devices, that is, the number N of CSI measurement performed by the terminal device may be less than Or a positive integer equal to M.
- Each CSI measurement may be performed based on measurement information carried in part or all of the downlink control information of the M downlink control information.
- the N pieces of downlink control information may be excluded from the nth downlink control information.
- the CSI-RS resource indicated by the downlink control information is used as an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information.
- the measurement information further includes indication information of a codebook subset restriction CSR, where the indication information of the CSR is used to indicate a limited codebook subset,
- the codebook subset includes some or all of the codewords in the codebook;
- the terminal device performs each CSI measurement based on the measurement information carried by the at least two downlink control information received in the preset time period, including:
- the terminal device performs the CSI measurement according to the codebook subset indicated by the at least two downlink control information received in the preset time period.
- the terminal device By indicating to the terminal device the codebook subset used by the network device, more information can be provided for the terminal device to perform CSI measurement, for example, the terminal device can precode the received CSI-RS based on the codebook subset, thereby The optimal precoding matrix feedback can be determined for the network device.
- the measurement information is carried in a CSI request field.
- the CSI request field may be a field in the DCI defined in the LTE protocol or the NR protocol.
- the method further comprises:
- the terminal device receives the first indication information, where the first indication information indicates whether to perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information, or the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information.
- the CSI measurement is performed based on the measurement information carried in the at least two downlink control information.
- the network device can autonomously determine the measurement type of the CSI measurement and indicate to the terminal device the measurement type of the CSI measurement. Therefore, the network device can instruct the terminal device to perform corresponding CSI measurement according to the current requirement, so that the network device determines a reasonable transmission scheme and a scheduling policy, which is beneficial to improving reliability of data transmission.
- each downlink control information of the multiple downlink control information carries a channel state information CSI Report configuration instructions
- Only one of the plurality of downlink control information carries indication information of multiple CSI report configurations;
- Only one downlink control information of the multiple downlink control information carries indication information of a CSI report configuration.
- the specific content of the measurement information carried in the downlink control information is not particularly limited, and various possible situations of the specific content of the measurement information carried in the downlink control information are listed above.
- the method further comprises:
- the terminal device sends CSI, and the CSI is measured based on measurement information carried in one or at least two downlink control information.
- the terminal device may send the corresponding CSI to each network device, and may also send the CSI measured for each network device to a certain network device, which is not limited in this application.
- the CSI sent by the terminal device may be the CSI measured based on the measurement information carried in the downlink control information, or may be the CSI measured based on the measurement information carried in the at least two downlink control information.
- a method for measuring channel state information including:
- the terminal device sends the channel state information CSI, and the CSI is measured based on the measurement information carried in the downlink control information, or the CSI is measured based on the measurement information carried in the at least two downlink control information.
- the terminal device can carry CSI through a field, where the field can be used to carry CSI based on single-site CSI measurement, and can also be used to carry multi-site based CSI measured by CSI.
- the terminal device sends the CSI, including:
- the terminal device sends a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes: at least one CSI measured based on measurement information carried by one downlink control information, Or the at least one measured CSI based on the measurement information carried in the at least two downlink control information, where the second field indicates whether the CSI in the first field is measured based on the measurement information carried in the at least two downlink control information. ;or
- each first CSI report of the plurality of first CSI reports includes a first field and a second field, where the first field includes one based on one or at least two
- the feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
- the terminal device sends the CSI, including:
- the terminal device sends a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on measurement information carried in at least two downlink control information, or a pre- Defining a value; the predefined value implicitly indicating that the terminal device does not perform CSI measurement based on measurement information carried in the at least two downlink control information; or
- the terminal device sends a plurality of first CSI reports, where each first CSI report of the multiple first CSI reports includes a first field, where the first field includes one that is carried based on at least two downlink control information. Measuring the CSI obtained by the information measurement, or a predefined value; the predefined value implicitly indicating that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- the feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
- the terminal device may carry CSI by using multiple fields, where one field may be used to carry CSI based on single-site CSI measurement, and may also be used for carrying CSI based on multi-site CSI measurement; another field can only be used to carry CSI measured based on one measurement type, such as CSI based on single site CSI measurement.
- the single-site CSI measurement result and the multi-site based CSI measurement result can be fed back to the network device at the same time, which is beneficial to the network device to determine a more reasonable transmission scheme and scheduling strategy.
- the terminal device sends the CSI, including:
- the terminal device sends a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one measurement information carried in one or at least two downlink control information. Measuring the obtained CSI, where the fourth field is used to carry at least one CSI measured based on measurement information carried in only one downlink control information; or
- each second CSI report of the plurality of second CSI reports includes a third field and a fourth field, where the third field is used to carry one based on one or at least The CSI measured by the measurement information carried in the two downlink control information, the fourth field is only used to carry a CSI measured based on the measurement information carried in one downlink control information.
- the feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
- the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried in the at least two downlink control information.
- the feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
- a method for measuring channel state information including:
- the network device receives channel state information CSI
- the network device determines whether the received CSI is measured based on measurement information carried in the at least two downlink control information.
- the network device may determine whether the CSI is measured based on measurement information carried in a downlink control information, or determine that the CSI is measured based on measurement information carried in a downlink control information. The obtaining is also measured based on the measurement information carried in the at least two downlink control information.
- the terminal device can autonomously determine the type of measurement on which the CSI measurement is based, and can measure the type of measurement on which the network device CSI is based on any of the following implementations while feeding back the CSI to the network device.
- the terminal device may carry CSI through a field, where the field may be used to carry CSI based on single-site CSI measurement, and may also be used to carry CSI measured based on multi-site CSI.
- the network device receives the CSI, including:
- the network device receives a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes at least one measured based on measurement information carried in one or at least two downlink control information.
- the CSI, the second field indicates whether each CSI in the first field is measured based on measurement information carried by at least two downlink control information.
- the feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
- the network device receives the CSI, including:
- the network device Receiving, by the network device, a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on measurement information carried in at least two downlink control information, or a predefined
- the value of the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- the feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
- the network device receives the CSI, including:
- the network device receives a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one measurement information carried based on one or at least two downlink control information.
- the fourth field is used to carry at least one CSI measured based on only one CSI-RS resource.
- the feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
- the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried by the at least two downlink control information.
- the feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
- a terminal device for performing the method of any of the first to second aspects or any of the first to second aspects.
- the terminal device includes a module for performing the method in any one of the first to second aspects or the first to second aspects of the foregoing possible implementation manner.
- a network device for performing the method of any of the third or third aspect of the possible implementation.
- the network device comprises means for performing the method of any of the possible implementations of the third or third aspect above.
- a terminal device including a transceiver, a processor, and a memory.
- the processor is configured to control a transceiver transceiver signal
- the memory is configured to store a computer program
- the processor is configured to call and run the computer program from the memory, so that the terminal device performs the first to second aspects and the first to the second A method in any of the possible implementations of the aspects.
- a network device including a transceiver, a processor, and a memory.
- the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the network device performs any of the third aspect and the third aspect described above The method in the implementation.
- the eighth aspect provides a communication system, including the terminal device provided by the fourth aspect and the network device provided by the fifth aspect, or the terminal device provided by the sixth aspect and the network device provided by the seventh aspect.
- a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform the method of the above aspects.
- a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the above aspects.
- a chip system comprising a processor for calling and running the computer program from a memory, the computer program for implementing the method of the above aspects.
- FIG. 1 is a schematic diagram of a wireless communication system suitable for use in an embodiment of the present application
- FIG. 2 is a schematic flowchart of a method for measuring channel state information provided by an embodiment of the present application
- FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 4 is a schematic block diagram of a network device according to an embodiment of the present application.
- FIG. 5 is another schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 6 is another schematic block diagram of a network device according to an embodiment of the present application.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- the communication system applicable to the embodiment of the present application is first described in detail by taking the communication system shown in FIG. 1 as an example.
- FIG. 1 is a schematic diagram of a wireless communication system 100 suitable for use with embodiments of the present application.
- the wireless communication system 100 can include at least one network device, such as the network device #1 111, the network device #2 112, and the network device #3 113 shown in FIG. 1, and the wireless communication system 100 can also At least one terminal device is included, for example, the terminal device 121 shown in FIG.
- one or more of the network device #1 111, the network device #2 112, and the network device #3 113 can simultaneously communicate with the terminal device 121.
- network device #1 111 and network device #2 112 simultaneously communicate with terminal device 121.
- the network device in the wireless communication system may be any device having a wireless transceiver function or a chip that can be disposed on the device, including but not limited to: an evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), and home base station (for example, Home evolved) NodeB, or Home Node B, HNB), BaseBand Unit (BBU), Access Point (AP), Wireless Relay Node, Wireless Backhaul Node in Wireless Fidelity (WIFI) System , transmission point (TP) or transmission and reception point (TRP), etc., can also be 5G, such as NR, gNB in the system, or transmission point (TRP or TP), 5G system
- One or a group of antennas including multiple antenna panels
- a network node that constitutes a gNB or transmission point such as a baseband unit (BBU), or a distributed unit (distr) Imped unit, DU) and
- the gNB may include a centralized unit (CU) and a DU.
- the gNB may also include a radio unit (RU).
- the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
- the CU implements radio resource control (RRC), the function of the packet data convergence protocol (PDCP) layer, and the DU implements the wireless chain.
- RRC radio resource control
- PDCP packet data convergence protocol
- the DU implements the wireless chain.
- the functions of the radio link control (RLC), the media access control (MAC), and the physical (PHY) layer Since the information of the RRC layer eventually becomes information of the PHY layer or is transformed by the information of the PHY layer, high-level signaling, such as RRC layer signaling or PHCP layer signaling, can also be used in this architecture.
- the network device can be a CU node, or a DU node, or a device including a CU node and a DU node.
- the CU may be divided into network devices in the access network RAN, and the CU may be divided into network devices in the core network CN, which is not limited herein.
- the terminal equipment in the wireless communication system may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, User terminal, terminal, wireless communication device, user agent or user device.
- the terminal device in the embodiment of the present application may be a mobile phone, a tablet, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal.
- Equipment wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( A wireless terminal in a transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
- the embodiment of the present application does not limit the application scenario.
- the foregoing terminal device and a chip that can be disposed in the foregoing terminal device are collectively referred to as a terminal device.
- the network device #1 to the network device #3 and the terminal device are schematically illustrated in FIG. 1 for convenience of understanding, but this should not constitute any limitation to the present application, and the wireless communication system may further include more Or a smaller number of network devices, and may also include a larger number of terminal devices.
- Network devices that communicate with different terminal devices may be the same network device, or may be different network devices, and networks that communicate with different terminal devices. The number of devices may be the same or different, and this application does not limit this.
- a network device In a CoMP transmission scenario, a network device usually needs to refer to the CSI fed back by the terminal device to determine a reasonable transmission scheme and scheduling policy.
- the terminal device may perform CSI measurement and feedback according to a reference signal resource indicated by the network device, for example, a channel state information reference signal (CSI-RS) resource.
- the CSI may include, for example, a precoding matrix indicator (PMI), a rank indication (RI), and a channel quality indicator (CQI).
- PMI precoding matrix indicator
- RI rank indication
- CQI channel quality indicator
- the network device #1 111 and the network device #2 112 can simultaneously communicate with the terminal device 121.
- the network device #1 111, the network device #2 112, and the network device #3 113 can simultaneously communicate with the terminal device 121.
- the network device may determine various interference measurement assumptions according to other network devices that may have a communication connection around the terminal device, and indicate to the terminal device, so that the terminal device performs CSI measurement according to the multiple interference measurement assumptions.
- the method of indicating the interference measurement assumption by the network device may bring about a large signaling overhead. For example, if there are S types of interference measurement assumptions, it is possible to indicate S types of interference measurement assumptions to the terminal device by using the S downlink control information, or to indicate the S types in the multiple fields in the same downlink control information. Interference measurement assumptions. One or more interference measurement resources may be indicated in the indication of each interference measurement hypothesis. If there are multiple other network devices that may have a communication connection around the terminal device, the number of interference assumptions may be large, and the signaling overhead caused by this is also very serious.
- the present application provides a method for measuring channel state information, which can reduce signaling overhead.
- the method of measuring channel state information provided by the present application is applicable to a wireless communication system, such as the wireless communication system 100 shown in FIG.
- the terminal device in the embodiment of the present application can communicate with one or more network devices at the same time.
- the network device in the embodiment of the present application may correspond to the network device #1 111, the network device #2 112, and the network device in FIG.
- One or more of #3 113, the terminal device in the embodiment of the present application may correspond to the terminal device 121 in FIG.
- the CSI-RS in the embodiments of the present application is a specific form of the reference signal for CSI measurement, and should not constitute any limitation to the present application. In fact, this application does not exclude the use of other reference signals for CSI measurements, such as demodulation reference signals (DMRS), or reference signals having the same or similar functions as defined in future protocols.
- DMRS demodulation reference signals
- the embodiment of the present application is described in detail by taking an interaction process between a terminal device and one or more network devices, where the terminal device may be in a wireless communication system and has a wireless connection relationship with the network device.
- the terminal device may be in a wireless communication system and has a wireless connection relationship with the network device.
- Any terminal device It can be understood that any one of the terminal devices in the wireless communication system can perform CSI measurement and feedback based on the same technical solution, which is not limited in this application.
- FIG. 2 is a schematic flowchart of a method 200 for measuring channel state information provided by an embodiment of the present application, which is shown from the perspective of device interaction. As shown, the method 200 illustrated in FIG. 2 can include steps 210 through 240. The method 200 is described in detail below in conjunction with FIG.
- step 210 the terminal device receives downlink control information, where the downlink control information carries measurement information for CSI measurement.
- step 210 the network device sends downlink control information.
- the network device that sends the downlink control information to the terminal device may be a network device that has a communication connection with the terminal device.
- the network devices having the communication connection with the terminal device 121 shown in FIG. 1 such as one or more of the network device #1 111, the network device #2 112, and the network device #3 113 .
- CSI measurement may be performed in advance by sending a CSI-RS to determine a reasonable transmission scheme and scheduling policy.
- the number of network devices that send downlink control information to the terminal device is not limited in this application.
- the downlink control information may be DCI (downlink control information) defined in the LTE protocol or the NR protocol, or may be other signaling used to carry downlink control information transmitted in the physical downlink control channel. This application does not limit this.
- the physical downlink control channel mentioned herein may be a PDCCH (physical downlink control channel) defined in the LTE protocol or the NR protocol, an enhanced physical downlink control channel (EPDCCH), or an NR.
- the physical downlink control channel may be a physical downlink control channel based on a cell-specific reference signal (CRS) or a physical downlink control channel based on a DMRS.
- the physical downlink control channel based on the CRS may be a physical downlink control channel demodulated according to the CRS
- the physical downlink control channel based on the DMRS may be a physical downlink control channel demodulated according to the DMRS.
- the CRS is a reference signal (Reference Signal, RS) that the network device configures to all the terminal devices in the cell.
- the DMRS may be an RS configured by the network device to a specific terminal device, and may also be referred to as a terminal device specific reference signal.
- the physical downlink control channel defined in the NR system may be a physical downlink control channel of the foregoing DMRS.
- the downlink control information may be uplink related downlink control information.
- the downlink control information may be a DCI related to the uplink in LTE or NR.
- the network device may indicate, by using downlink control information, measurement information for CSI measurement to the terminal device.
- the measurement information includes at least indication information of a CSI-RS resource configuration.
- the downlink control information carries the indication information of the CSI-RS resource configuration.
- the terminal device may acquire multiple possible CSI-RS resource configurations in advance through high-layer signaling (for example, radio resource control (RRC) message), for example, the multiple possibilities.
- the CSI-RS resource configuration can be indicated by multiple resource settings.
- the terminal device may determine the CSI-RS resource according to the indication field of the CSI-RS resource configuration included in the received downlink control information.
- the indication field may be, for example, an index of a resource setting, or an indication information that may be used to index a resource setting, such as an index in a CSI request (CSI request) field in a DCI defined in an LTE protocol or an NR protocol.
- the measurement information carried in the downlink control information further includes indication information of a codebook subset restriction (CSR).
- CSR codebook subset restriction
- the indication information of the codebook subset restriction is used to indicate a restricted codebook subset
- the restricted codebook subset can be understood as a codebook subset currently used by the network device.
- the codebook subset may include some or all of the codewords in the codebook.
- the indication information of the CSI-RS resource configuration and the indication information of the codebook subset restriction are carried by the same field.
- the measurement information may be carried in a certain field of the downlink control information.
- the CSI request field in the DCI defined in the LTE protocol or the NR protocol.
- the terminal device may pre-acquire information of multiple CSI-RS resource configurations and codebook subset restrictions through higher layer signaling (eg, RRC message).
- the CSI-RS resource configuration may be indicated by a resource setting in the RRC
- the codebook restricted subset may be indicated by a reporting setting in the RRC message.
- the reporting setting can be used to indicate the CSI that needs to be fed back (or reported) and the resources used by the feedback CSI.
- the resource setting and the reporting setting may have a corresponding relationship, and the correspondence between the two may be indicated by a link.
- the terminal device may determine, according to the resource setting, the reporting setting, and the link, the correspondence between the multiple CSI-RS resources and the plurality of codebook subset restrictions, that is, multiple resources are obtained.
- the network device can indicate an index of a resource setting and an index of a reporting setting through an index.
- the terminal device may determine the indicated resource setting and reporting setting according to the CSI request field in the received DCI and the pre-acquired mapping relationship, and further determine the CSI-RS resource and the reporting setting corresponding to the resource setting indicated in the DCI.
- the corresponding codebook subset As described above, the downlink control information has a one-to-one correspondence with the network device, and the CSI-RS resource and the codebook subset determined by the terminal device according to the downlink control information are also used by the network device that sends the downlink control information. CSI-RS resources and codebook subsets.
- the terminal device may perform different types of CSI measurement according to the quantity of downlink control information received within a preset time period. Specifically, the terminal device may perform step 220 (including 2201 or step 2202) described below.
- a downlink control information is received in the preset time period, and the terminal device performs CSI measurement based on only the measurement information carried in one downlink control information, otherwise, based on at least two received in the preset time period.
- the measurement information carried in the downlink control information is subjected to each CSI measurement.
- the terminal device may use the time when the downlink control information is received for the first time as the starting time, and the time when the starting time extends backward for a preset time period may be used as the ending time, where the starting time is The time interval to the end time is a preset time period.
- the terminal device can receive the downlink control information from the network device in real time. After the end of a preset time period, the time when the terminal device receives the downlink control information again can be regarded as the start time of the next preset time period, and is received again.
- the downlink control information can be regarded as the first downlink control information of the next preset time period.
- the time from the start time to the back of the preset time period can be used as the end time.
- the time interval from the start time to the end time is a preset time period.
- it can be understood as the last preset time period.
- the starting time of one preset time period may be the time when the first downlink control information is received after the end time of the last preset time period.
- the terminal device may directly use the time domain resource defined by the communication system as the preset time period.
- a time unit defined by the communication system is taken as a preset time period.
- the time unit may be, for example, a subframe, a slot, a radio frame, a mini slot or a sub slot, a plurality of aggregated slots, a plurality of aggregated subframes, symbols, and the like, and even It may be a transmission time interval (TTI), which is not limited in this application.
- TTI transmission time interval
- the preset time period can be one time slot defined in the communication system.
- the terminal device may receive only one downlink control information or multiple downlink control information within a preset time period.
- the terminal device can selectively perform one or both of the following steps 2201 or 2202 according to the number of downlink control information received within a preset period of time.
- the size of the preset time period may be that the network device notifies the terminal device in advance, for example, the terminal device is notified by the network device, and may be predefined, for example, a protocol definition.
- the preset time period may be one or more time units.
- the size of the preset time period is one or more time slots.
- each time unit enumerated above may be defined according to the LTE protocol or the NR protocol, or may be defined according to a future protocol.
- the size of the time unit is not limited in this application. It should be understood that the size of the preset time period listed above is only an exemplary description, and should not be construed as limiting the present application. The size of the preset time period is not limited.
- the M downlink control information may be from M network devices, in other words, the M downlink control information and
- the M network devices may have a one-to-one correspondence, and each network device may send one downlink control information, and the downlink control information sent by each network device may carry measurement information for CSI measurement.
- the measurement information carried in the downlink control information sent by the network device #1 in FIG. 1 includes at least the indication information of the CSI-RS resource configuration, to indicate the resource location of the CSI-RS sent by the network device #1, or Indicates the resource location where the CSI-RS is received.
- step 2201 a plurality of downlink control information is received in a preset time period, and the terminal device performs each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period.
- the terminal device may perform each CSI measurement according to the measurement information carried by the downlink control information of N (M ⁇ N ⁇ 2, N is an integer) of the M downlink control information received in the preset time period, and obtain multiple CSIs.
- Each CSI of the multiple CSIs may be obtained by performing CSI measurement based on measurement information carried by at least two downlink control information received in the preset time period.
- the plurality of CSIs may be obtained by performing CSI measurement on a plurality of network devices, where the plurality of network devices may be network devices corresponding to some or all of the N downlink control information.
- the number of downlink control information on which any two CSI measurements are based may be different. That is to say, in the multiple CSI measurement, the value of the number N of downlink control information on which it is based may be different.
- the terminal device may perform multiple CSI measurements for multiple downlink control information received in a preset time period, and each CSI measurement may be a measurement carried based on at least two downlink control information of the multiple downlink control information. Information is performed, that is, each CSI measurement may be a CSI measurement for one of a plurality of network devices.
- the terminal device may be configured to receive the downlink control information from the M network devices within the preset time period.
- the terminal device may perform each CSI measurement based on the measurement information carried in the N downlink control information of the M downlink control information.
- the plurality of network devices may include, for example, a first network device and a second network device.
- step 210 may specifically include:
- Step 2101 The terminal device receives downlink control information from the first network device within a preset time period.
- Step 2102 The terminal device receives downlink control information from the second network device within a preset time period.
- the terminal device After the first network device and the second network device respectively send downlink control information to the terminal device, it is possible to send the CSI-RS based on the CSI-RS resources indicated in the downlink control information that is sent separately, so that the terminal device performs CSI measurement, thereby Prepare for subsequent resource scheduling, etc.
- the CSI-RS sent by the other network device may become an interference signal of the network device.
- the CSI-RS sent by the first network device may become an interference signal of the second network device
- the CSI-RS sent by the second network device may become an interference signal of the first network device. Therefore, the terminal device may perform CSI measurement on the multiple network devices to obtain multiple CSIs to be fed back to multiple network devices, and each CSI in the multiple CSIs may be based on measurements carried in the multiple downlink control information. Information is measured.
- the first network device and the second network device are taken as an example to describe a process in which multiple network devices send downlink control information and CSI-RS to the terminal device, but this should not be
- the application constitutes any limitation, and the terminal device may also receive downlink control information sent by more or less network devices within a preset time period.
- the number of the network device that sends the downlink control information to the terminal device is not limited, or the number of the downlink control information received by the terminal device is not limited.
- the terminal device may perform each CSI measurement based on the measurement information carried in the N downlink control information. Specifically, the terminal device may perform CSI measurement based on the measurement information carried in the N downlink control information for the mth (0 ⁇ m ⁇ M) downlink control information of the M downlink control information.
- the mth downlink control information of the M downlink control information and the nth downlink control information of the N downlink control information may have a corresponding relationship.
- the terminal device is respectively recorded as: downlink control information #1, downlink control information #2, and downlink control information. #3, downlink control information #4 and downlink control information #5.
- the downlink control information may be downlink control information #1, downlink control information #3, and downlink control information #5 among the five downlink control information.
- the terminal device may associate the mth of the M downlink control information with the nth of the N downlink control information according to a preset rule.
- the downlink control information #1 of the five downlink control information is the first downlink control information of the five downlink control information, and the downlink of the five downlink control information.
- Control information #2 is the second downlink control information among the five downlink control information, and so on.
- the downlink control information #1 of the three downlink control information is the first downlink control information of the three downlink control information
- the downlink control information #3 of the three downlink control information is the third The second downlink control information of the downlink control information
- the downlink control information #5 of the three downlink control information is the third downlink control information of the three downlink control information.
- the first downlink control information of the N downlink control information is the first downlink control information of the M downlink control information
- the second downlink control information of the N downlink control information is the The third downlink control information of the M downlink control information
- the third downlink control information of the N downlink control information is the fifth downlink control information of the M downlink control information.
- m may take one or more values in [1, M], that is, the terminal device may perform CSI measurement separately for one or more of the M downlink control information, or the terminal device may target the M One or more of the M network devices corresponding to the downlink control information respectively perform CSI measurement; m may also take each value of [1, M], that is, the terminal device may be for M downlink control Each of the downlink control information in the information is subjected to CSI measurement, or the terminal device can perform CSI measurement for each of the M network devices, which is not limited in this application.
- the CSI-RS resource indicated by the downlink control information except the nth downlink control information may be used as the nth downlink control information in the process of performing CSI measurement on the nth downlink control information.
- the CSI-RS resources indicated by the remaining N-1 downlink control except the nth downlink control information of the N downlink control information may be the interference measurement resources of the CSI-RS resources indicated by the nth downlink control information.
- the CSI-RS resources indicated by the downlink control information may be interference measurement resources of the CSI-RS resources indicated by the nth downlink control information.
- CSI measurement combined with measurement information carried in multiple downlink control information may be referred to as multi-site based CSI measurement.
- Multi-site based CSI measurements can be understood as a type of measurement of CSI.
- the terminal device may perform CSI measurements in conjunction with CSI-RS from a certain network device (eg, the first network device) and CSI-RS from one or more other network devices (eg, the second network device). If the CSI measurement is a CSI measurement for the first network device, the measured CSI is fed back to the first network device.
- the CSI-RS from the second network device can be considered an interference signal.
- the terminal device may perform CSI measurement according to the CSI-RS resource of the first network device and the CSI-RS resource of the second network device, and obtain a CSI to be fed back, for example, a CQI.
- the terminal device may perform CSI measurement in combination with the codebook subset indicated by the multiple downlink control information.
- the terminal device may perform CSI measurement based on the codebook subset indicated by at least two downlink control information of the M downlink control information.
- the M downlink control information part or all of the CSI-RS resources indicated by the remaining M-1 downlink control information except the nth downlink control information of the N downlink control information may be the nth downlink.
- the codebook subset indicated by the downlink control information except the nth downlink control information in the N downlink control information may be used to precode the CSI-RS as the interference signal, and the nth of the N downlink control information
- the codebook subset indicated by the downlink control information may be used to precode the CSI-RS carried on the CSI-RS resource indicated by the nth downlink control information.
- the terminal device may perform precoding on the interference signal by traversing the codebook subset indicated by the N-1 downlink control information except the nth downlink control information, and traverse the indication indicated by the nth downlink control information.
- the codebook subset precodes the CSI-RS corresponding to the nth downlink control information.
- nth downlink control information and the mth downlink control information of the M downlink control information has been described in detail above with reference to the examples, and details are not described herein again.
- m can take one or more values in [1, M], or take each value in [1, M] to determine the optimal The precoding matrix, ie the CSI to be fed back, eg PMI.
- the number of downlink control information used to determine the interference measurement resource and the number of downlink control information corresponding to the codebook subset used for precoding the interference signal may be the same or different.
- the terminal device may send a CSI-RS to the first network device according to a codebook subset of the first network device (referred to as a first codebook subset for convenience of distinction and description) (for convenience of distinction and description, for example, Performing precoding on the first CSI-RS to obtain a pre-coded first CSI-RS, and according to the codebook subset of the second network device (for convenience of distinction and description, recorded as the second codebook subset)
- the CSI-RS transmitted by the second network device (for convenience of distinction and description, for example, referred to as a second CSI-RS) is precoded to obtain a precoded second CSI-RS.
- the pre-coded first CSI-RS is used as the pre-coded second CSI-RS interference signal
- the pre-coded second CSI-RS is used as the pre-coded first CSI-RS as the pre-coded Interleaving the first CSI-RS interference signal to calculate a CQI corresponding to the first network device and a CQI corresponding to the second network device, respectively, by traversing the first codebook subset and the second codebook subset, respectively Determining a precoding matrix in the first codebook subset and a precoding matrix in the second codebook subset respectively used when the CQI corresponding to the two network devices is optimal, and respectively feeding the two precoding matrices to Network equipment.
- the first network device and the second network device are named only for convenience of distinction, and should not be construed as limiting the application.
- the first network device and the second network device may be opposite.
- the first network device may be a network device for which the terminal device performs CSI measurement, and may be any one of the network devices in the collaboration set.
- the second network device may be one or more network devices in the collaboration set other than the first network device.
- a collaboration set can be understood as a set of potential network devices that may subsequently perform data transmission with the terminal device.
- the network device #1, the network device #2, and the network device #3 transmit the CSI-RS to the terminal device for a certain period of time, that is, Network device #1, network device #2, and network device #3 may transmit data with the terminal device in the future.
- the terminal device can perform CSI measurement for the network device #1, the network device #2, and the network device #3, respectively. If the CSI measurement is performed for the network device #1, the network device #1 may be the first network device, and the network device #2 and the network device #3 may be the second network device; if the CSI measurement is performed for the network device #2, the network Device #2 may be the first network device, network device #1 and network device #3 may be the second network device; and so on.
- the CSI-RS from the network device #1 can be used as a target signal, and the CSI-RS from the network device #2 and the network device #3 can be used as an interference signal to perform CSI.
- the CSI measured by the CSI measurement is the CSI fed back to the network device #1.
- the network device #1 can be understood as an example of the first network device, and the network device #2 and the network device #3 can be understood as two examples of the second network device.
- each downlink control information of the multiple downlink control information carries a reporting setting. That is, each downlink control information may carry an indication information of a resource setting and an indication information of a reporting setting, wherein the resource setting and the reporting setting may be indicated by the same indication information.
- each downlink control information may carry a resource setting indication information, but only one downlink control information may carry multiple indication information of the reporting setting, and the indication information of the multiple reporting settings is used to indicate multiple
- the reporting setting may be in one-to-one correspondence with the plurality of network devices corresponding to the multiple downlink control information, and may be used to indicate CSI and feedback CSI resources that need to be fed back to the multiple network devices respectively.
- the multiple reporting settings may also be used to indicate multiple CSRs, which may be in one-to-one correspondence with multiple network devices, and the codebook subset used by each network device may be indicated by one CSR.
- each downlink control information of the multiple downlink control information carries a reporting setting. That is, each downlink control information may carry a resource setting indication information, but only one downlink control information (referred to as downlink control information #A for convenience of distinction and description) may carry a reporting information of a reporting setting.
- downlink control information #A for convenience of distinction and description
- the reporting information of the reporting setting indicates a reporting setting
- the reporting setting may be used to indicate CSI that needs to be fed back (for example, including but not limited to one or more of PMI, CQI, or RI) and resources for feeding back CSI, that is, for
- the type of CSI reported by each network device may be the same, and the CSI measured by the multiple network devices may be fed back to the same network device by using the indicated resource of the feedback CSI, for example, sending the downlink control information.
- the reporting setting may also be used to indicate a CSR, that is, multiple network devices may use the same codebook subset.
- each CSI measurement may be performed based on the measurement information carried in the multiple downlink control information, that is, the CSI measurement based on multiple sites.
- the CSI measurement may also be independently performed based on the measurements carried in each of the plurality of downlink control information, that is, based on the single site CSI measurement.
- step 2202 a downlink control information is received in the preset time period, and the terminal device performs CSI measurement based only on the measurement information carried in the one downlink control information.
- the terminal device may be considered to receive only one network device within a preset time period (for convenience of distinction and description, the first Downlink control information of the three network devices.
- step 210 may specifically include:
- Step 2103 The terminal device receives downlink control information from the third network device within a preset time period.
- the terminal device may only transmit data with this network device in the next time period, so the terminal device may only receive the CSI-RS from the third network device.
- the signals of other network devices are considered to be noise signals. Therefore, the terminal device may perform CSI measurement on the third network device to obtain CSI to be fed back, and the CSI may be measured based on measurement information carried in only one downlink control information.
- CSI measurement based on measurement information carried in one downlink control information may be referred to as single-site based CSI measurement.
- Single site based CSI measurements can be understood as another type of measurement of CSI.
- the third network device is named only for facilitating the distinction between the first network device and the second network device in the above, and should not be construed as limiting the application.
- the third network device is not associated with the first network device and the second network device.
- the third network device may be any one of the wireless communication systems that transmits downlink control information to the terminal device.
- the network device #1 may be the third network device.
- the network device #3 transmits the CSI-RS to the terminal device at a certain time period, that is, the network device #3 may transmit data with the terminal device in the next time period, the terminal device may perform CSI measurement for the network device #3.
- the terminal device may also receive downlink control information from more or less network devices within a preset time period. Regardless of which network device the downlink control information received by the terminal device is received within the preset time period, the terminal device may perform CSI measurement according to the method described in step 2201 or step 2202 above.
- the terminal device may perform CSI measurement by using different measurement types according to the number of downlink control signals received within a preset time period. Therefore, the network equipment does not need additional signaling overhead to indicate various interference measurement assumptions, but the terminal device autonomously determines the measurement type, which can greatly save signaling overhead. Moreover, the measurement type thus determined can obtain more accurate CSI feedback to the network device, thereby facilitating the network device to determine a reasonable transmission scheme and scheduling strategy, that is, improving the reliability of data transmission and improving system performance.
- the method 200 further includes: determining, by the terminal device, the quantity of downlink control information received in the preset time period according to the received signal strength of the downlink control information and the preset threshold.
- the terminal device When the terminal device receives the downlink control information, it may incorrectly receive the downlink control information sent to other terminal devices, and mistype the received downlink control information as the downlink control information sent to itself, and counts into the preset time period. Among the number of downlink control signals received, this may cause the terminal device to make an error in the selection of the measurement type. In this case, the terminal device may not receive the CSI-RS transmitted by the network device corresponding to the downlink control information. That is to say, the downlink control information that the terminal device incorrectly receives should not be included in the number of downlink control signals received within the preset time period. To prevent the terminal device from selecting the wrong measurement type for CSI measurement, the terminal device may determine the number of downlink control signals received within the preset time period according to the received signal strength of the downlink control information and the preset threshold.
- the received downlink control information when the signal strength of the downlink control information received by the terminal device in the preset time period is greater than or equal to the preset threshold, the received downlink control information may be included in the downlink received within the preset time period. In the quantity of control information; when the signal strength of a certain downlink control information received by the terminal device in the preset time period is less than the preset threshold, the received downlink control signal may be ignored, and is not counted in the preset time period. The number of downlink control information received within.
- the preset threshold may be determined by the network device after the network device determines the signaling, or may be predefined, for example, a protocol definition.
- the method for determining the preset threshold and the value are not limited.
- determining, by the terminal device, the number of downlink control information received within the preset time period according to the signal strength and the preset threshold of the downlink control signal is only one possible implementation manner, and should not be construed as limiting the present application.
- the terminal device may also determine the number of downlink control information received within the preset time period based on other methods.
- the method 200 further includes: the terminal device receiving the first indication information, where the first indication information indicates whether to perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information, or the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information or based on at least The measurement information carried in the two downlink control information is subjected to CSI measurement.
- the first indication information can be used to indicate the type of measurement.
- the measurement type may include single site based CSI measurement or multi-site based CSI measurement, wherein in single site based CSI measurement, CSI measurement is performed based on measurement information carried in one downlink control information, based on multi-site CSI measurement Each CSI measurement is performed based on measurement information carried in multiple downlink control information.
- the first indication information may be sent by any one of the network devices that have a communication connection with the terminal device, for example, a network device that has established an RRC connection with the terminal device.
- the first indication information may be carried by one or more signaling messages in an RRC message, a media access control (MAC) control element (CE), or downlink control information.
- the terminal device may perform corresponding CSI measurement according to the measurement type indicated by the first indication information.
- the first indication information may be an indication bit.
- the network device and the terminal device may pre-arrange, when the indication bit is set to “1”, indicate that the measurement type is CSI measurement based on measurement information carried in at least two downlink control information, or, based on multi-site CSI. Measurement; when the indication bit is set to "0", the measurement type is indicated as CSI measurement based on measurement information carried in one downlink control information, or based on single site CSI measurement.
- the first indication information is schematically given here for ease of understanding, but this should not constitute any limitation to the application, and the first indication information may also be in other forms to indicate the measurement type. , for example, indicated by different fields in the same signaling, and so on.
- the terminal device may select a measurement type to perform CSI measurement according to the number of downlink control information received in the preset time period and the first indication information. Specifically, if the terminal device receives multiple downlink control information within a preset time period, and the measurement type indicated by the first indication information is CSI measurement based on the measurement information carried in the at least two downlink control information, the terminal device may The CSI measurement is performed according to the measurement information carried in the received multiple downlink control information; if the terminal device receives a downlink control information within a preset time period, and the measurement type indicated by the first indication information is carried in a downlink control information.
- the CSI measurement of the measurement information the terminal device may perform the CSI measurement according to the measurement information carried in the received downlink control information; if the terminal device receives the multiple downlink control information within the preset time period, the first indication
- the measurement type indicated by the information is CSI measurement based on the measurement information carried in the downlink control information, and the terminal device may separately perform CSI measurement based on the measurement information in each of the received downlink control information.
- CSI measurement is performed separately for each downlink control information; Receiving a downlink control information in a preset time period, and the measurement type indicated by the first indication information is a CSI measurement based on the measurement information carried in the at least two downlink control information, the terminal device may combine the previously received another The CSI measurement is performed by one or more downlink control information, or the terminal device may wait for another downlink control information received subsequently for CSI measurement.
- the terminal device may determine downlink control information received before or after the preset time period according to a predetermined duration threshold. Specifically, it is assumed that the terminal device receives only one downlink control information in the preset time period #1, but the measurement type indicated by the network device is CSI measurement based on the measurement information carried in the at least two downlink control information, the terminal device may Extending a time duration threshold at a starting time of the preset time period #1, and performing one or more downlink control information received in the time period covered by the time length threshold to perform CSI measurement; or, the terminal device may be in a preset time period The end time of #1 is extended backward by a duration threshold, and the CSI measurement is performed in combination with one or more downlink control information received during the period covered by the duration threshold.
- the CSI measurement may be performed based on the measurement information carried in the downlink control information, or may not be measured.
- duration threshold may be previously notified by the network device to the terminal device, or may be determined by the terminal device, or may be predefined, for example, a protocol definition, which is not limited in this application.
- the terminal device can perform CSI measurement according to the measurement type indicated by the network device, so that the autonomy of the network device is enhanced, and the network device can instruct the terminal device to perform corresponding CSI measurement according to the current requirement, so that the network device determines a reasonable transmission.
- the scheme and scheduling strategy are conducive to improving the reliability of data transmission.
- the method 200 further includes:
- Step 230 The terminal device sends CSI, and the CSI is measured based on measurement information carried in one or at least two downlink control information.
- the terminal device can carry the CSI through the CSI report.
- the terminal device may specifically feed back the CSI to the network device by using any one of the implementation manners provided below.
- the CSI reports involved in the different implementation manners are respectively the first CSI report and the second CSI report. It should be understood that the first CSI report and the second CSI report are named only for facilitating different feedback modes, and should not constitute any limitation on the order of CSI transmission, the number of CSIs, and the like.
- the CSI report (e.g., referred to as the first CSI report) can include a first field that can be used to carry one or more CSIs.
- each CSI may be measured based on measurement information carried in one downlink control information, that is, CSI based on single site CSI measurement; or may be based on at least two The measurement information carried in the downlink control information is measured, that is, the CSI obtained based on the CSI measurement of the multi-site.
- the CSI measurement may be based on CSI measurement of measurement information carried in one downlink control information, it may also be CSI measurement based on measurement information carried by at least two downlink control information, but the network device may not know that the CSI measurement is received.
- the CSI is measured by which measurement type is adopted, and therefore, the terminal device can indicate the measurement type of the CSI measurement while feeding back the CSI.
- the terminal device may indicate, by means of an explicit indication or an implicit indication, the measurement type of the CSI carried in the first field to the network device.
- the first CSI report may further include a second field, where the second field is used to indicate a measurement type on which the CSI carried in the first field is based.
- the second field may be an indication field of one bit.
- the indication field is set to “1”
- the CSI carried by the first field may be measured based on measurement information carried in the at least two downlink control information;
- the field is set to "0”
- the CSI carried by the first field is measured based on the measurement information carried in the downlink control information.
- the terminal device may carry the CSIs of the two measurement types in the same field, and indicate the measurement type by using an indication bit pre-agreed with the network device, and the network device receives the first
- a reasonable transmission scheme and scheduling policy can be determined according to the measurement type indicated in the second field and the CSI carried in the first field.
- the terminal device may determine a resource for feeding back CSI according to the information received in advance, and send the CSI on the resource of the feedback CSI. For example, the terminal device may determine the resource for feeding back the CSI according to the CSI reporting setting indicated by the downlink control information received in step 210.
- each downlink control information may carry the indication information of one CSI reporting setting, or may carry the indication information of multiple CSI reporting settings through only one downlink control information, or may only pass one downlink control information. Carry a CSI reporting setting.
- each downlink control information may indicate a resource that feeds back the CSI, and the terminal device may feed back the corresponding CSI based on the resource of the feedback CSI indicated by each downlink control information. For example, the CSI measured for the nth downlink control information is reported by the CSI feedback resource indicated in the nth downlink control information.
- the downlink control information may be used to indicate the resources of the multiple feedback CSIs, and the resources of the multiple feedback CSIs may be corresponding to the multiple CSIs, and the terminal device may The corresponding CSI is fed back on the resources of each feedback CSI.
- the downlink control information may indicate a resource that feeds back the CSI, and the terminal device may pass the CSI obtained by each CSI measurement through the feedback indicated by the downlink control information. CSI resources are reported.
- the CSI measured by the network device can be fed back to the network device, for example, the CSI measured for the first network device is fed back to the first network.
- the device may also feed back the CSI measured by the one or more network devices to the same network device, where the network device may be a network device indicating the resource for feeding back the CSI, and the CSI may be separately sent to the CSI through the network device.
- Network device corresponding to each CSI For example, the CSI measured separately for the first network device and the second network device is fed back to the serving network device.
- step 230 specifically includes:
- the terminal device sends a plurality of first CSI reports, where the first field in each of the first CSI reports includes a CSI, and the CSI may be based on measurement information carried in the at least two downlink control information.
- the measurement is obtained, or it may be measured based on measurement information carried in a downlink control information.
- step 230 specifically includes one or more steps of step 2301, step 2302, and step 2303:
- Step 2301 the terminal device sends a first CSI report to the first network device, where the first CSI report carries the CSI measured for the first network device (for convenience of distinction and description, it is recorded as CSI#1);
- Step 2302 The terminal device sends a first CSI report to the second network device, where the CSI (for CSC#2) is measured for the second network device.
- step 230 specifically includes:
- Step 2303 The terminal device sends a first CSI report to the third network device, where the first CSI report carries the CSI measured for the third network device (referred to as CSI#3 for convenience of distinction and description).
- the foregoing CSI may be measured based on measurement information carried in at least two downlink control information, or may be measured based on measurement information carried in one downlink control information. get.
- the first network device, the second network device, and the third network device are taken as an example, and the terminal device is schematically shown to the first network device and the second network, respectively.
- the step of transmitting the CSI by the device and the third network device should not constitute any limitation to the application.
- the terminal device may perform one or more steps in steps 2301 to 2303, and may also perform the steps. More steps from 2301 to 2303, for example, sending CSI to more network devices.
- the first field in each first CSI report may carry a CSI measured based on one or more downlink control information.
- the terminal device receives multiple downlink control information within a preset time period, the network device does not indicate the measurement type, or the network device indicates that the measurement type is based on the measurement information carried in the at least two downlink control information.
- the terminal device may perform CSI measurement based on the measurement information carried in the at least two downlink control information of the multiple downlink control information, and report the CSI corresponding to each network device to each network device.
- the terminal device receives multiple downlink control information within a preset time period, and the network device indicates that the measurement type is CSI measurement based on the measurement information carried in one downlink control information, and the terminal device is based on each The CSI measurement is performed on the measurement information carried in the downlink control information, and the CSI corresponding to each network device is reported to each network device.
- a further possible situation is that the terminal device receives multiple downlink control information within a preset time period, but the terminal device may perform CSI measurement and feedback only for the network device corresponding to one of the downlink control information, the CSI measurement.
- the CSI measurement may be based on the measurement information carried in the downlink control information, or may be the CSI measurement based on the measurement information carried in the at least two downlink control information, and the measured result may be reported to the network device for each measurement. It is to be understood that the above list may be merely illustrative for ease of understanding and should not be construed as limiting.
- step 230 specifically includes:
- the terminal device sends a first CSI report, where the first field in the first CSI report may include at least one CSI measured based on measurement information carried by one downlink control information, or at least one is carried based on at least two downlink control information.
- the measured information is measured by the CSI obtained.
- a possible situation is that the terminal device receives a downlink control information within a preset time period, the network device does not indicate the measurement type, or the network device indicates that the measurement type is a CSI measurement based on the measurement information carried in one downlink control information, The terminal device performs CSI-based measurement based on the measurement information carried in the one downlink control information. In this case, the terminal device may feed back the measured CSI to the network device or feed back to the same network device, for example, the serving network device.
- the terminal device receives multiple downlink control information in a preset time period, the network device does not indicate the measurement type, or the network device indicates that the measurement type is based on the measurement information carried in the at least two downlink control information.
- the CSI measurement the terminal device performs CSI-based measurement based on the measurement information carried in the at least two downlink control information received in the preset time period; and another possibility is that the terminal device receives more than the preset time period.
- the downlink control information the network device indicates that the measurement type is CSI measurement based on the measurement information carried in one downlink control information, and the terminal device separately performs CSI measurement based on the measurement information carried in each downlink control information.
- the terminal device may perform the CSI measurement based on the single site based on the measurement information carried in the at least two downlink control information received in the preset time period. Or performing multi-site based CSI measurement, the measured CSI can be fed back to the same network device, for example, a service network device.
- the terminal device performs multi-site based CSI measurement for the first network device and the second network device, respectively, obtaining CSI #1 for the first network device and CSI #2 for the second network device.
- the terminal device may carry both CSI #1 and CSI #2 in a first field of a first CSI report, and send the first CSI report to a serving network device of the terminal device.
- the terminal device may carry the CSI #1 in the first CSI report sent to the first network device, and carry the CSI #2 in the first CSI report sent to the second network device.
- CSI #3 for the third network device is obtained.
- the terminal device may carry the CSI #3 in the first field of the first CSI report, and send the first CSI report to the third network device, or to the serving network device.
- the first field in the first CSI report may be used to carry CSI measured based on measurement information carried in at least two downlink control information, that is, CSI based on multi-site CSI measurement, or the first field may be used for Carrying a predefined value; the predefined value is used to implicitly indicate that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- the terminal device may only report the CSI measured by the multi-site CSI measurement, and when the CSI measurement is performed based on the single site, the terminal device may be implicitly indicated by the predefined value pre-defined with the network device.
- the resulting CSI is not based on multi-site CSI measurements, ie, CSI based on single-site CSI measurements is not reported.
- the number of CSIs carried in the first field may be one or more, which is not limited in this application.
- the CSI measured by the network device may be fed back to the network device, for example, the CSI measured by the first network device is fed back to the first network device;
- the CSIs respectively measured for one or more network devices may be fed back to the same network device, for example, the CSIs respectively measured for the first network device and the second network device are fed back to the serving network device.
- step 230 specifically includes:
- the terminal device sends a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on the at least two downlink control information, or a predefined value; the predefined value implicitly indicates The terminal device does not perform CSI measurement based on the measurements carried in the at least two downlink control information.
- the first field carries a predefined value, it indicates that the terminal device may perform single-site based CSI measurement based on the measurement information carried in one downlink control information. In this case, the terminal device may not report the CSI measured based on the single station CSI.
- step 230 specifically includes:
- the terminal device sends a plurality of first CSI reports, where each of the first CSI reports includes a first field, where the first field includes a measurement information that is carried based on the at least two downlink control information.
- CSI or a predefined value; the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurements carried in the at least two downlink control information.
- the specific process of the terminal device feeding back the CSI to the network device is similar to the specific process of the terminal device feeding back the CSI to the network device in the manner of displaying the indication.
- the specific process has been detailed in the above. For the sake of brevity, it will not be repeated here.
- the CSI report (for example, recorded as the second CSI report) may include a third field and a fourth field, where the third field may be used to carry measurement information carried based on one or at least two downlink control information.
- the measured CSI that is, CSI based on single-site CSI measurement or CSI based on multi-site CSI measurement
- the fourth field is only used to carry CSI measured based on measurement information carried by one downlink control information, that is, CSI based on single site CSI measurements.
- the terminal device when the terminal device receives the plurality of downlink control information in the preset time period, the terminal device may perform the multi-site based on the measurement information carried in the at least two downlink control information received in the preset time period.
- the CSI measurement can also perform single-site based CSI measurement based on the measurement information carried in each downlink control information.
- the CSI measured based on the multi-site CSI may be carried in the third field, and the CSI obtained based on the CSI measurement of the single station may be carried in the fourth field.
- the CSI obtained by the CSI measurement based on the measurement information carried in the downlink control information in the fourth field may be pre-agreed by the network device and the terminal device, and the network device may receive the second CSI.
- the CSI in the fourth field is obtained based on single site CSI measurements. Since the network device may not know whether the CSI carried in the third field in the received second CSI report is based on single-site CSI measurement or multi-site based CSI measurement, the network device may feedback CSI.
- the measurement type on which the CSI carried by the third field is based is indicated. Specifically, the terminal device may indicate, by means of an explicit indication or an implicit indication, the measurement type of the CSI carried in the first field to the network device.
- the second CSI report may further include a fifth field, where the fifth field is used to indicate a measurement type on which the CSI carried in the third field is based.
- the fifth field may be an indication field of one bit.
- the indication field is set to “1”
- the CSI carried by the third field may be measured based on the measurement information carried in the at least two downlink control information, that is, based on The multi-site CSI measurement is obtained.
- the indication field is set to “0”
- the CSI carried by the third field may be measured based on the measurement information carried in the downlink control information, that is, based on the single-site CSI measurement.
- the terminal device may carry the CSI measured based on the two measurement types in the second CSI report, and indicate the measurement type by using an indication bit pre-agreed with the network device, and the network device is receiving.
- a reasonable transmission scheme and a scheduling policy may be determined according to the measurement type based on the CSI in the third field indicated in the fifth field and the CSI carried in the third field and the fourth field.
- the network device and the terminal device may pre-arrange the CSI that preferentially carries the measurement information carried based on the multiple downlink control information in the third field, that is, if the terminal device obtains the CSI through the multi-site based CSI measurement (for convenience, for example, Recorded as CSI#A), the CSI#A is preferentially carried in the third field, and the terminal device can simultaneously obtain the CSI through the single-site based CSI measurement (for convenience of distinction and description, for example, as CSI#B), The CSI #B is carried in the fourth field.
- the CSI#B may be simultaneously carried in the third field and the fourth field.
- the network device may compare the information carried in the third field and the fourth field, and if the information carried in the third field and the fourth field is different, the terminal device is considered to be based on Multi-site CSI measurement, the CSI carried in the third field is obtained based on multi-site CSI measurement; when the information carried in the third field and the fourth field is the same, the terminal device is considered to be based on multi-site For CSI measurements, CSI is obtained only by single site based CSI measurements.
- the terminal device does not require additional bit overhead to indicate the type of measurement on which the CSI carried in the third field is based.
- the number of CSIs carried in the third field and the fourth field may be one or more, which is not limited in this application.
- the CSI measured by the network device can be fed back to the network device, for example, the CSI measured by the first network device is fed back to the first network device;
- the CSI measured separately for the one or more network devices may also be fed back to the same network device, for example, the CSI measured separately for the first network device and the second network device is fed back to the serving network device.
- step 230 specifically includes:
- the terminal device sends a plurality of second CSI reports, where a third field in each of the second CSI reports is used to carry at least one measurement information carried based on one or at least two downlink control information.
- the CSI, the fourth field in each second CSI report of the multiple second CSI reports is used to carry at least one CSI measured based on measurement information carried only by one downlink control information.
- step 230 specifically includes:
- the terminal device sends a second CSI report, where the third field in the second CSI report is used to carry multiple CSIs measured based on measurement information carried by one or more downlink control information, and the fourth CSI report The field is used to carry multiple CSIs measured based on measurement information carried by one downlink control information.
- step 230 regardless of whether the terminal device sends one or more CSI reports (for example, the first CSI report or the second CSI report), only one CSI report may be received for each network device.
- One or more CSIs may be carried in the CSI report received by the network device.
- the one or more CSIs may be CSIs measured based on measurement information carried by one downlink control information, or may be CSIs measured based on measurement information carried by at least two downlink control information.
- the network device receives the CSI, including:
- the network device receives the first CSI report, where the first CSI report includes a first field and a second field, where the first field includes at least one CSI measured according to measurement information carried in one or at least two downlink control information, and the second field Indicates the type of measurement on which the CSI in the first field is based.
- the network device receives the CSI, including:
- the network device receives the first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured according to the measurement information carried in the at least two downlink control information, or a predefined value; the predefined value is hidden
- the method indicates that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- the network device receives the CSI, including:
- the network device receives the second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one CSI measured according to measurement information carried by one or at least two downlink control information, and the fourth field It is used to carry at least one CSI measured based on only one CSI-RS resource.
- the second CSI report further includes a fifth field, where the fifth field indicates a measurement type on which the CSI carried in the third field is based.
- the method 200 further includes:
- step 240 the network device determines the type of measurement on which the received CSI is based.
- the network device may be the first network device listed above, and the step 240 may include: Step 2401, the first network device may determine a measurement type on which the CSI #1 is based; or the network device may also be In the second network device enumerated above, step 240 may include: step 2402, the second network device may determine the type of measurement on which the CSI #2 is based; or the network device may also be the third network device listed above Step 240 may include, in step 2403, the third network device may determine the type of measurement on which CSI #3 is based.
- the steps performed by the first network device, the second network device, and the third network device are respectively shown in the figure for convenience of understanding, but this should not constitute any limitation to the present application. In actual implementation, the network device Only one of steps 2401 to 2403 may be performed.
- the terminal device can transmit CSI to one or more network devices.
- the measurement type on which the CSI received by the network device is based may include: CSI measurement based on measurement information carried by one downlink control information, or CSI measurement based on measurement information carried by multiple downlink control information.
- the terminal device can send the CSI to the terminal device by using any one of the first CSI report or the second CSI report, and after receiving the CSI from the terminal device in step 230, the network device can a defined indicator field (eg, a second field in the first CSI report or a fifth field in the second CSI report) or a predefined rule (eg, a predefined value in the first CSI report or a second CSI report)
- a defined indicator field eg, a second field in the first CSI report or a fifth field in the second CSI report
- a predefined rule eg, a predefined value in the first CSI report or a second CSI report
- the terminal device indicates the measurement type on which the CSI is based, in combination with different implementation manners.
- the method for the network device to determine the measurement type on which the CSI is based is similar to the method for the terminal device to indicate the measurement type on which the CSI is based, For the sake of brevity, it will not be repeated here.
- the method for indicating the measurement type of the CSI by the terminal device proposed in the present application is not limited to the scenario provided in the present application, and the CSI is performed when the terminal device is not based on the number of downlink control information received within the preset time period.
- the type of measurement on which the fed back CSI is based may also be indicated to the network device based on a similar method.
- the network device can accurately learn the measurement type on which the CSI is fed back by the terminal device, so that a reasonable transmission scheme and a scheduling policy can be determined according to the CSI and the measurement type fed back by the terminal device, which is beneficial to improving data transmission. reliability.
- FIG. 2 is only for ease of understanding, and schematically illustrates steps performed by the terminal device and each network device, but this does not mean that the terminal device and the network device perform each step shown in the figure, for example,
- the terminal device may only have step 2201 or step 2202, or step 2201 and step 2202 may also be performed.
- the terminal device may send CSI to other network devices, and may not send CSI to the first to third network devices shown in the figure. Therefore, FIG. 2 is merely a schematic flow chart and should not be construed as limiting the application.
- the service network device involved in the present application may refer to a network that provides RRC connection, non-access stratum (NAS) mobility management, and security input services for the terminal device through the wireless air interface protocol. device.
- NAS non-access stratum
- storing as referred to in this application may refer to being stored in one or more memories.
- the one or more memories may be separate arrangements or integrated in an encoder or decoder, processor, or communication device.
- the one or more memories may also be partially provided separately, and some of them may be integrated in a decoder, a processor, or a communication device.
- the type of the memory may be any form of storage medium, which is not limited herein.
- pre-agreed may be implemented by pre-storing corresponding codes, tables, or other means that may be used to indicate relevant information in devices (eg, including terminal devices and network devices), The specific implementation manner is not limited.
- the communication method of the embodiment of the present application is described in detail above with reference to FIG. 2 .
- the network device and the terminal device in the embodiments of the present application are described in detail below with reference to FIG. 3 to FIG.
- FIG. 3 is a schematic block diagram of a terminal device 30 provided by an embodiment of the present application.
- the terminal device 30 can include a transceiver module 31 and a measurement module 32.
- the transceiver module 31 is configured to receive downlink control information, where the downlink control information carries measurement information used for channel state information CSI measurement, where the measurement information includes at least indication information of a channel state information reference signal CSI-RS resource configuration.
- the indication information of the CSI-RS resource configuration is used to indicate a CSI-RS resource;
- the measurement module 32 is configured to perform CSI measurement based on the measurement information carried in only one downlink control information; otherwise, the measurement module 32 is configured to use the preset time period.
- the received measurement information carried by the at least two downlink control information is subjected to each CSI measurement.
- the measurement module 32 is configured to perform, according to the measurement information carried by the N downlink control information received in the preset time period, the CSI measurement, where the nth downlink control information is except the nth
- the CSI-RS resource indicated by the downlink control information other than the downlink control information is an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information, where N ⁇ n ⁇ 1, N ⁇ 2, and n, N is an integer.
- the measurement information further includes indication information of a codebook subset restriction CSR, where the indication information of the codebook subset restriction indicates a restricted codebook subset, where the codebook subset includes a codebook Part or all of the codeword;
- the measuring module 32 is specifically configured to perform the CSI measurement according to the codebook subset indicated by the at least two downlink control information received in the preset time period.
- the transceiver module 31 is further configured to receive first indication information, where the first indication information indicates whether to perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- each downlink control information of the multiple downlink control information carries an indication of a channel state information CSI report configuration. Information; or
- One of the plurality of downlink control information carries indication information of multiple CSI report configurations
- One downlink control information of the multiple downlink control information carries indication information of a CSI report configuration.
- the transceiver module 31 is further configured to send CSI, where the CSI is measured based on measurement information carried by one or more downlink control information.
- the transceiver module 31 is specifically configured to:
- Sending a first CSI report where the first CSI report includes a first field and a second field, where the first field includes: a CSI measured based on measurement information carried by one downlink control information, or multiple CSIs Each CSI of the plurality of CSIs is measured based on measurement information carried by at least two downlink control information, where the second field indicates a measurement type on which the CSI in the first field is based; or
- each of the plurality of first CSI reports includes a first field and a second field, where the first field includes one based on one or at least two downlink control information
- the CSI of the carried measurement information is measured, and the second field indicates whether each CSI in the first field is measured based on measurement information carried by the at least two downlink control information.
- the transceiver module 31 is specifically configured to:
- the measurement information carried by the control information is measured, and the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurement information carried by the at least two downlink control information; or
- each of the plurality of first CSI reports includes a first field, where the first field includes a measurement information that is carried based on the at least two downlink control information.
- CSI or a predefined value; the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on measurement information carried by at least two downlink control information.
- the transceiver module 31 is specifically configured to:
- the second CSI report includes a third field and a fourth field, where the third field is used to carry multiple CSIs measured based on measurement information carried by one or at least two downlink control information,
- the fourth field is only used to carry the CSI measured based on the measurement information carried by one downlink control information;
- each of the plurality of second CSI reports including a third field and a fourth field, the third field being used to carry one based on one or at least two downlink controls
- the CSI obtained by measuring the measurement information carried by the information, the fourth field is only used to carry a CSI measured based on measurement information carried by one downlink control information.
- the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried by the at least two downlink control information.
- the measurement type includes: CSI measurement based on measurement information carried by at least two downlink control information, or CSI measurement based on measurement information carried by one downlink control information.
- the measurement information is carried in a CSI request CSI request field.
- the terminal device 30 may correspond to a network device in the method 200 of measuring channel state information according to an embodiment of the present invention, which may include a terminal device for performing the measurement method 200 of the channel state information in FIG.
- the module of the method each module in the terminal device 30 and the other operations and/or functions described above are respectively used to implement the corresponding process of the method 200 for measuring the channel state information in FIG. 2, and specifically, the transceiver module 31 is configured to perform step 210 in the method 200. (including step 2101 to step 2103) and step 230, the measuring module 32 is configured to perform step 220 in the method 200 (including one or two of step 2201 or step 2202), and each module performs a specific process of the corresponding step in the method. It has been described in detail in 200, and will not be repeated here for brevity.
- FIG. 4 is a schematic block diagram of a network device 40 provided by an embodiment of the present application.
- the network device 40 can include a transceiver module 41 and a determination module 42.
- the transceiver module 41 is configured to receive channel state information CSI;
- the determining module 42 is configured to determine whether the CSI received by the transceiver is measured based on measurement information carried in the at least two downlink control information.
- the transceiver module 41 is specifically configured to receive a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes at least one based on one or at least two downlink control information.
- the CSI of the carried measurement information is measured, and the second field indicates whether each CSI in the first field is measured based on measurement information carried by the at least two downlink control information.
- the transceiver module 41 is specifically configured to receive the first CSI report, where the first CSI report includes a first field, where the first field includes at least one measured based on measurement information carried in the at least two downlink control information.
- CSI or a predefined value; the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- the transceiver module 41 is specifically configured to receive a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one downlink control information based on one or at least two The CSI of the measured information is carried, and the fourth field is used to carry at least one CSI measured based on only one CSI-RS resource.
- the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried by the at least two downlink control information.
- network device 40 may correspond to a network device in measurement method 200 of channel state information in accordance with an embodiment of the present invention, which may include a network device for performing measurement method 200 of channel state information in FIG. 2 ( A module of a method performed by, for example, a first network device, a second network device, or a third network device.
- each module in the network device 40 and the other operations and/or functions described above are respectively used to implement the corresponding process of the method 200 for measuring channel state information in FIG. 2, and specifically, the transceiver module 41 is configured to perform the steps included in the method 200.
- the determining module 42 is configured to perform any one of the steps 2401 to 2403 in the method 200, and each module performs the specific steps of the corresponding steps. The process has been described in detail in the method 200 and will not be described again for brevity.
- FIG. 5 is another schematic block diagram of a terminal device 500 according to an embodiment of the present application.
- the terminal device 500 includes a processor 501 and a transceiver 502.
- the terminal device 500 further includes a memory 503.
- the processor 502, the transceiver 502 and the memory 503 communicate with each other through an internal connection path for transferring control and/or data signals
- the memory 503 is for storing a computer program
- the processor 501 is used for the memory 503.
- the computer program is called and executed to control the transceiver 502 to send and receive signals.
- the processor 501 When the program instructions stored in the memory 503 are executed by the processor 501, the processor 501 is configured to control the transceiver 502 to receive downlink control information, and the processor 501 is further configured to: when the transceiver 502 receives a downlink control information.
- the CSI measurement is performed based on the measurement information carried in the one downlink control information; otherwise, the processor 501 is configured to perform each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period. .
- the above processor 501 and memory 503 can synthesize a processing device, and the processor 501 is configured to execute the program code stored in the memory 503 to implement the above functions.
- the memory 503 can also be integrated in the processor 501 or independent of the processor 501.
- the terminal device 500 may further include an antenna 504, configured to send uplink data or uplink control signaling output by the transceiver 502 by using a wireless signal.
- the terminal device 500 may correspond to a terminal device in the method 200 of measuring channel state information according to an embodiment of the present invention, and the terminal device 500 may include a terminal device for performing the measurement method 200 of the channel state information in FIG.
- the module of the method of execution are respectively configured to implement a corresponding process of the method 200 for measuring channel state information in FIG. 2, specifically, the memory 503 is configured to store program code, such that the processor 501, when executing the program code, controlling the transceiver 502 to perform step 210 (including steps 2101 to 2103) and step 230 (including steps 2301 to 2303) in method 200 through antenna 504, and perform the steps in method 200.
- the specific process of each module performing the above corresponding steps has been described in detail in the method 200, and is not described herein again for brevity.
- the processor 501 can be used to perform the actions implemented by the terminal in the foregoing method embodiments, and the transceiver 502 can be used to perform the actions of the terminal to transmit or transmit to the network device in the foregoing method embodiments.
- the transceiver 502 can be used to perform the actions of the terminal to transmit or transmit to the network device in the foregoing method embodiments.
- the above processor 501 and memory 503 can be integrated into one processing device, and the processor 501 is configured to execute the program code stored in the memory 503 to implement the above functions.
- the memory 503 can also be integrated in the processor 501.
- the terminal device 500 described above may also include a power source 505 for providing power to various devices or circuits in the terminal.
- the terminal device 500 may further include one or more of an input unit 506, a display unit 507, an audio circuit 508, a camera 509, a sensor 510, and the like, the audio circuit.
- an input unit 506 a display unit 507
- an audio circuit 508 a camera 509
- a sensor 510 a sensor
- the terminal device 500 may further include one or more of an input unit 506, a display unit 507, an audio circuit 508, a camera 509, a sensor 510, and the like, the audio circuit.
- a speaker 5082, a microphone 5084, and the like can also be included.
- FIG. 6 is another schematic block diagram of a network device 600 according to an embodiment of the present application.
- the network device 600 includes a processor 610 and a transceiver 620.
- the network device 600 further includes a memory 630.
- the processor 610, the transceiver 620 and the memory 630 communicate with each other through an internal connection path for transmitting control and/or data signals
- the memory 630 is for storing a computer program
- the processor 610 is configured to receive from the memory 630.
- the computer program is called and run to control the transceiver 620 to send and receive signals.
- the processor 610 When the program instructions stored in the memory 630 are executed by the processor 610, the processor 610 is configured to control the transceiver 620 to receive CSI; the processor 610 is further configured to determine whether the received CSI is carried in the at least two downlink control information. The measurement information is measured.
- the processor 610 and the memory 630 may be combined to form a processing device, and the processor 610 is configured to execute the program code stored in the memory 630 to implement the above functions.
- the memory 630 may also be integrated in the processor 610 or independent of the processor 610 when implemented.
- the network device may further include an antenna 640, configured to send downlink data or downlink control signaling output by the transceiver 620 by using a wireless signal.
- the network device 600 may correspond to a network device (eg, a first network device, a second network device, or a third network device) in the method 200 for measuring channel state information according to an embodiment of the present invention, where the network device 600 may A unit of a method performed by a network device for performing the measurement method 200 of the channel state information in FIG. Moreover, each unit in the network device 30 and the other operations and/or functions described above respectively implement a corresponding flow of the method 200 for measuring channel state information in FIG.
- a network device eg, a first network device, a second network device, or a third network device
- the memory 630 is configured to store program code, such that the processor 610, when executing the program code, control the transceiver 620 to perform any one of steps 2101 to 2103 and step 2301 to step 2303 in the method 200 through the antenna 640, and perform steps 2401 to 2403. Any of the steps in .
- the specific process in which each module performs the above-mentioned corresponding steps has been described in detail in the method 300. For brevity, no further details are provided herein.
- the application also provides a communication system comprising one or more of the aforementioned network devices, and one or more terminal devices.
- processors in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration.
- DSPs digital signal processors
- ASIC application specific integrated circuit
- FPGA field programmable gate array
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory.
- the volatile memory can be a random access memory (RAM) that acts as an external cache.
- RAM random access memory
- RAM random access memory
- SRAM static random access memory
- DRAM dynamic random access memory
- synchronous dynamic randomness synchronous dynamic randomness.
- Synchronous DRAM SDRAM
- DDR SDRAM double data rate synchronous DRAM
- ESDRAM enhanced synchronous dynamic random access memory
- SLDRAM synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct RAM).
- the above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
- the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
- the computer program product comprises one or more computer instructions or computer programs.
- the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, infrared, wireless, microwave, etc.).
- the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains one or more sets of available media.
- the usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium.
- the semiconductor medium can be a solid state hard drive.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
- the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
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Abstract
The present application provides a method for measuring channel state information (CSI), a terminal device, and a network device. The method comprises: a terminal device receiving downlink control information, the downlink control information carrying measurement information for CSI measurement, the measurement information at least comprising CSI-RS resource configuration indication information, to indicate a CSI-RS resource; receiving one piece of downlink control information within a preset period of time, and the terminal device performing CSI measurement on the basis of measurement information carried in only one piece of downlink control information, or alternatively, performing every CSI measurement on the basis of measurement information carried in at least two pieces of downlink control information received in the preset period of time. Therefore, the terminal device can determine a measurement type autonomously according to the amount of downlink control information received in a preset period of time, thereby reducing signaling overhead. A network device can also determine an appropriate transmission scheme and scheduling policy according to measured CSI, thereby facilitating an improvement in the reliability of data transmission.
Description
本申请要求于2018年1月3日提交中国专利局、申请号为201810005731.3、申请名称为“信道状态信息的测量方法、终端设备和网络设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。This application claims priority to Chinese Patent Application No. 201810005731.3, filed on Jan. 3, 2018, and entitled "Measurement Method, Terminal Equipment and Network Equipment for Channel State Information", the entire contents of which are incorporated by reference. Combined in this application.
本申请涉及通信领域,并且更具体地,涉及信道状态信息的测量方法、终端设备和网络设备。The present application relates to the field of communications and, more particularly, to a method of measuring channel state information, a terminal device, and a network device.
协作多点(Coordination Multiple Point,CoMP)传输是一种用于解决小区间干扰问题并提升小区边缘用户吞吐量的方法。在CoMP传输场景中,当某个网络设备在与终端设备通信的同时,可能并不知道是否还有其他网络设备以及还有几个其他网络设备与终端设备通信,因此,网络设备可以向终端设备指示干扰测量假设条件,以使得终端设备根据各种干扰测量假设条件分别进行信道状态信息(channel state information,CSI)测量和反馈。网络设备进而可根据多种干扰测量假设条件下测量和反馈的CSI,确定传输方案,自适应地调整调度策略。Coordination Multiple Point (CoMP) transmission is a method for solving inter-cell interference problems and improving cell edge user throughput. In a CoMP transmission scenario, when a network device communicates with a terminal device, it may not know whether there are other network devices and several other network devices that communicate with the terminal device. Therefore, the network device may be to the terminal device. The interference measurement assumptions are indicated such that the terminal device performs channel state information (CSI) measurement and feedback separately according to various interference measurement assumptions. The network device, in turn, can determine the transmission scheme based on the CSI measured and fed back under various interference measurement assumptions, and adaptively adjust the scheduling strategy.
当前技术中,网络设备可以通过下行控制信息向终端设备指示多种干扰测量假设条件。例如,如果要指示S(S≥1,S为整数)种干扰测量假设条件,则网络设备需要S次指示,且在每次指示中指示一个或多个干扰测量资源,存在较大的信令开销。随着协作传输的站点数的增加,干扰测量假设条件也会增多,由此带来的信令开销也更加严重。In the current technology, the network device may indicate various interference measurement assumptions to the terminal device by using downlink control information. For example, if S (S ≥ 1, S is an integer) interference measurement assumptions are to be indicated, the network device needs S indications, and one or more interference measurement resources are indicated in each indication, and there is a large signaling. Overhead. As the number of cooperatively transmitted stations increases, the interference measurement assumptions also increase, and the resulting signaling overhead is also more serious.
发明内容Summary of the invention
本申请提供一种信道状态信息的测量方法、终端设备和网络设备,能够减小信令开销。The present application provides a method for measuring channel state information, a terminal device, and a network device, which can reduce signaling overhead.
第一方面,提供了一种信道状态信息的测量方法,包括:In a first aspect, a method for measuring channel state information is provided, including:
终端设备接收下行控制信息,所述下行控制信息中携带用于信道状态信息CSI测量的测量信息,所述测量信息至少包括信道状态信息参考信号CSI-RS资源配置的指示信息,所述CSI-RS资源配置的指示信息用于指示CSI-RS资源;The terminal device receives downlink control information, where the downlink control information carries measurement information for channel state information CSI measurement, and the measurement information includes at least indication information of a channel state information reference signal CSI-RS resource configuration, the CSI-RS The resource configuration indication information is used to indicate a CSI-RS resource;
在所述预设时段内接收到一个下行控制信息,所述终端设备仅基于所述一个下行控制信息中携带的测量信息进行CSI测量,否则,基于所述预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量。Receiving a downlink control information in the preset time period, the terminal device performs CSI measurement based on the measurement information carried in the one downlink control information, and otherwise, based on at least two received in the preset time period. The measurement information carried in the downlink control information is subjected to each CSI measurement.
换句话说,在预设时段内接收到多个下行控制信息,所述终端设备基于所述预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量;或者In other words, the plurality of downlink control information is received in the preset time period, and the terminal device performs each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period; or
在所述预设时段内接收到一个下行控制信息,所述终端设备仅基于所述一个下行控制信息中携带的测量信息进行CSI测量。其中,所述终端设备针对所述预设时段内接收到的 多个下行控制信息中的至少两个下行控制信息携带的测量信息进行多次CSI测量,所述多次CSI测量中的每次CSI测量都可以是基于所述多个下行控制信息中的至少两个下行控制信息携带的测量信息进行的,且任意两次CSI测量所基于的至少两个下行控制信息可以是不同的。A downlink control information is received in the preset time period, and the terminal device performs CSI measurement only based on the measurement information carried in the one downlink control information. The terminal device performs multiple CSI measurement on the measurement information carried by the at least two downlink control information of the multiple downlink control information received in the preset time period, and each CSI in the multiple CSI measurement The measurement may be performed based on the measurement information carried by the at least two downlink control information of the multiple downlink control information, and the at least two downlink control information on which the CSI measurement is based may be different.
在本申请中,为便于区分,可以将CSI测量分为基于单站点的CSI测量和基于多站点的CSI测量这两种测量类型。在基于单站点的CSI测量中,可基于一个下行控制信息中携带的测量信息进行CSI测量;在基于多站点的CSI测量中,每一次CSI测量可基于多个下行控制信息中携带的测量信息进行。或者说,测量类型可包括:基于至少两个下行控制信息中携带的测量信息的CSI测量,或,基于一个下行控制信息中携带的测量信息的CSI测量。In the present application, for ease of differentiation, CSI measurements can be classified into two types of measurement: single site based CSI measurement and multi site based CSI measurement. In the single-site-based CSI measurement, the CSI measurement may be performed based on the measurement information carried in one downlink control information; in the multi-site based CSI measurement, each CSI measurement may be performed based on the measurement information carried in the multiple downlink control information. . In other words, the measurement type may include: CSI measurement based on measurement information carried in at least two downlink control information, or CSI measurement based on measurement information carried in one downlink control information.
基于上述技术方案,终端设备可以根据预设时段内接收到的下行控制信息的数量,基于不同的测量类型进行CSI测量。因此,不需要网络设备额外的信令开销来指示各种干扰测量假设条件,而是由终端设备自主地确定测量类型,可以大大节省信令开销。并且,由此确定的测量类型能够得到更加准确的CSI反馈给网络设备,从而有利于网络设备确定合理的传输方案和调度策略,也就是提高了数据传输的可靠性,提高了***性能。Based on the foregoing technical solution, the terminal device may perform CSI measurement based on different measurement types according to the quantity of downlink control information received within a preset time period. Therefore, the network equipment does not need additional signaling overhead to indicate various interference measurement assumptions, but the terminal device autonomously determines the measurement type, which can greatly save signaling overhead. Moreover, the measurement type thus determined can obtain more accurate CSI feedback to the network device, thereby facilitating the network device to determine a reasonable transmission scheme and scheduling strategy, that is, improving the reliability of data transmission and improving system performance.
结合第一方面,在第一方面的某些实现方式中,In conjunction with the first aspect, in some implementations of the first aspect,
所述终端设备基于所述预设时段内接收到的至少两个下行控制信息携带的测量信息进行每一次CSI测量,包括:The performing, by the terminal device, each CSI measurement based on the measurement information carried by the at least two downlink control information received in the preset time period, including:
所述终端设备基于所述预设时段内接收到的N个下行控制信息中携带的测量信息进行所述每一次CSI测量,所述N个下行控制信息中除第n个下行控制信息之外的下行控制信息所指示的CSI-RS资源为所述第n个下行控制信息所指示的CSI-RS资源的干扰测量资源,所述第n个下行控制信息为所述终端设备在所述预设时段内接收到的多个下行控制信息中的一个,N≥n≥1,N≥2,n、N均为整数。The terminal device performs the CSI measurement according to the measurement information carried in the N downlink control information received in the preset time period, where the N pieces of downlink control information are other than the nth downlink control information. The CSI-RS resource indicated by the downlink control information is an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information, and the nth downlink control information is that the terminal device is in the preset time period. One of the plurality of downlink control information received, N≥n≥1, N≥2, and n and N are integers.
假设终端设备在所述预设时段内接收到M个下行控制信息,则M≥N≥2,M、N均为整数。换句话说,所述N个下行控制信息是所述M个下行控制信息中的部分或全部。其中,所述M个下行控制信息可与M个网络设备一一对应,若终端设备在预设时段内接收到来自M个网络设备的下行控制信息,则可以针对M个网络设备中的每个网络设备进行基于多站点的CSI测量,也可以针对M个网络设备中的部分网络设备中的每个网络设备进行基于多站点的测量,也就是说,终端设备进行CSI测量的次数N可以为小于或等于M的正整数,每一次CSI测量都可以是基于所述M个下行控制信息中的部分或全部下行控制信息中携带的测量信息进行的。Assuming that the terminal device receives M downlink control information within the preset time period, M≥N≥2, and M and N are integers. In other words, the N downlink control information is part or all of the M downlink control information. The M downlink control information may be in one-to-one correspondence with the M network devices. If the terminal device receives downlink control information from the M network devices within a preset time period, each of the M network devices may be used. The network device performs multi-site based CSI measurement, and may also perform multi-site based measurement for each of a part of the network devices of the M network devices, that is, the number N of CSI measurement performed by the terminal device may be less than Or a positive integer equal to M. Each CSI measurement may be performed based on measurement information carried in part or all of the downlink control information of the M downlink control information.
需要说明的是,针对N个下行控制信息中的第n个下行控制信息,基于N个下行控制信息进行CSI测量的过程中,可以将N个下行控制信息中除第n个下行控制信息之外的下行控制信息所指示的CSI-RS资源作为第n个下行控制信息所指示的CSI-RS资源的干扰测量资源。It should be noted that, in the process of performing CSI measurement based on the N pieces of downlink control information, in the process of performing CSI measurement based on the N pieces of downlink control information, the N pieces of downlink control information may be excluded from the nth downlink control information. The CSI-RS resource indicated by the downlink control information is used as an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information.
结合第一方面,在第一方面的某些实现方式中,所述测量信息还包括码本子集限制CSR的指示信息,所述CSR的指示信息用于指示被限制的码本子集,所述码本子集包括码本中的部分或全部码字;以及With reference to the first aspect, in some implementations of the first aspect, the measurement information further includes indication information of a codebook subset restriction CSR, where the indication information of the CSR is used to indicate a limited codebook subset, The codebook subset includes some or all of the codewords in the codebook;
所述终端设备基于所述预设时段内接收到的至少两个下行控制信息携带的测量信息 进行每一次CSI测量,包括:The terminal device performs each CSI measurement based on the measurement information carried by the at least two downlink control information received in the preset time period, including:
所述终端设备基于所述预设时段内接收到的至少两个下行控制信息指示的码本子集进行所述每一次CSI测量。The terminal device performs the CSI measurement according to the codebook subset indicated by the at least two downlink control information received in the preset time period.
通过向终端设备指示网络设备所使用的码本子集,可为终端设备进行CSI测量提供更多的信息,例如,终端设备可以基于码本子集对接收到的CSI-RS进行预编码,从而可以确定最优的预编码矩阵反馈给网络设备。By indicating to the terminal device the codebook subset used by the network device, more information can be provided for the terminal device to perform CSI measurement, for example, the terminal device can precode the received CSI-RS based on the codebook subset, thereby The optimal precoding matrix feedback can be determined for the network device.
在一种可能的设计中,所述测量信息承载于CSI请求(CSI request)字段。In one possible design, the measurement information is carried in a CSI request field.
该CSI request字段可以为LTE协议或NR协议中所定义的DCI中的字段。The CSI request field may be a field in the DCI defined in the LTE protocol or the NR protocol.
结合第一方面,在第一方面的某些实现方式中,所述方法还包括:In conjunction with the first aspect, in some implementations of the first aspect, the method further comprises:
所述终端设备接收第一指示信息,所述第一指示信息指示是否基于至少两个下行控制信息中携带的测量信息进行CSI测量。The terminal device receives the first indication information, where the first indication information indicates whether to perform CSI measurement based on the measurement information carried in the at least two downlink control information.
换句话说,所述第一指示信息指示是否基于一个下行控制信息中携带的测量信息进行CSI测量,或者说,所述第一指示信息指示基于一个下行控制信息中携带的测量信息进行CSI测量还是基于至少两个下行控制信息中携带的测量信息进行CSI测量。In other words, the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information, or the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information. The CSI measurement is performed based on the measurement information carried in the at least two downlink control information.
即,网络设备可以自主地确定CSI测量的测量类型,并向终端设备指示CSI测量的测量类型。由此,网络设备可以根据当前的需求指示终端设备进行相应的CSI测量,以便于网络设备确定合理的传输方案和调度策略,有利于提高数据传输的可靠性。That is, the network device can autonomously determine the measurement type of the CSI measurement and indicate to the terminal device the measurement type of the CSI measurement. Therefore, the network device can instruct the terminal device to perform corresponding CSI measurement according to the current requirement, so that the network device determines a reasonable transmission scheme and a scheduling policy, which is beneficial to improving reliability of data transmission.
结合第一方面,在第一方面的某些实现方式中,若所述终端设备接收到多个下行控制信息,所述多个下行控制信息中的每个下行控制信息中携带一个信道状态信息CSI报告配置的指示信息;或者With reference to the first aspect, in some implementation manners of the first aspect, if the terminal device receives multiple downlink control information, each downlink control information of the multiple downlink control information carries a channel state information CSI Report configuration instructions; or
所述多个下行控制信息中仅一个下行控制信息中携带多个CSI报告配置的指示信息;或者Only one of the plurality of downlink control information carries indication information of multiple CSI report configurations; or
所述多个下行控制信息中仅一个下行控制信息中携带一个CSI报告配置的指示信息。Only one downlink control information of the multiple downlink control information carries indication information of a CSI report configuration.
在本申请中,对于下行控制信息中携带的测量信息的具体内容并未特别限定,上文列举了一个下行控制信息中携带的测量信息的具体内容的各种可能的情况。In the present application, the specific content of the measurement information carried in the downlink control information is not particularly limited, and various possible situations of the specific content of the measurement information carried in the downlink control information are listed above.
结合第一方面,在第一方面的某些实现方式中,所述方法还包括:In conjunction with the first aspect, in some implementations of the first aspect, the method further comprises:
所述终端设备发送CSI,所述CSI是基于一个或至少两个下行控制信息中携带的测量信息测量得到。The terminal device sends CSI, and the CSI is measured based on measurement information carried in one or at least two downlink control information.
终端设备可以向各网络设备发送各自对应的CSI,也可以向某一个网络设备发送针对各网络设备测量得到的CSI,本申请对此不做限定。另外,终端设备所发送的CSI可以是基于一个下行控制信息中携带的测量信息测量得到的CSI,也可以是基于至少两个下行控制信息中携带的测量信息测量得到的CSI。The terminal device may send the corresponding CSI to each network device, and may also send the CSI measured for each network device to a certain network device, which is not limited in this application. In addition, the CSI sent by the terminal device may be the CSI measured based on the measurement information carried in the downlink control information, or may be the CSI measured based on the measurement information carried in the at least two downlink control information.
第二方面,提供了一种信道状态信息的测量方法,包括:In a second aspect, a method for measuring channel state information is provided, including:
终端设备发送信道状态信息CSI,所述CSI是仅基于一个下行控制信息中携带的测量信息测量得到,或者,所述CSI是基于至少两个下行控制信息中携带的测量信息测量得到。The terminal device sends the channel state information CSI, and the CSI is measured based on the measurement information carried in the downlink control information, or the CSI is measured based on the measurement information carried in the at least two downlink control information.
结合第一方面或第二方面,在一种可能的实现方式中,终端设备可通过一个字段承载CSI,该字段可用于承载基于单站点的CSI测量得到的CSI,也可用于承载基于多站点的CSI测量得到的CSI。With reference to the first aspect or the second aspect, in a possible implementation manner, the terminal device can carry CSI through a field, where the field can be used to carry CSI based on single-site CSI measurement, and can also be used to carry multi-site based CSI measured by CSI.
可选地,所述终端设备发送CSI,包括:Optionally, the terminal device sends the CSI, including:
所述终端设备发送一个第一CSI报告,所述第一CSI报告包括第一字段和第二字段,所述第一字段中包括:至少一个基于一个下行控制信息携带的测量信息测量得到的CSI,或,至少一个基于至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的CSI是否基于至少两个下行控制信息中携带的测量信息测量得到;或者The terminal device sends a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes: at least one CSI measured based on measurement information carried by one downlink control information, Or the at least one measured CSI based on the measurement information carried in the at least two downlink control information, where the second field indicates whether the CSI in the first field is measured based on the measurement information carried in the at least two downlink control information. ;or
所述终端设备发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段和第二字段,所述第一字段中包括一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的每个CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。Transmitting, by the terminal device, a plurality of first CSI reports, where each first CSI report of the plurality of first CSI reports includes a first field and a second field, where the first field includes one based on one or at least two The CSI measured by the measurement information carried in the downlink control information, the second field indicating whether each CSI in the first field is measured based on the measurement information carried in the at least two downlink control information.
上述CSI的反馈过程通过一个指示字段显式地指示CSI所基于的测量类型。The feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
可选地,所述终端设备发送CSI,包括:Optionally, the terminal device sends the CSI, including:
所述终端设备发送一个第一CSI报告,所述第一CSI报告包括第一字段,所述第一字段中包括至少一个基于至少两个下行控制信息中携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息中携带的测量信息进行CSI测量;或者The terminal device sends a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on measurement information carried in at least two downlink control information, or a pre- Defining a value; the predefined value implicitly indicating that the terminal device does not perform CSI measurement based on measurement information carried in the at least two downlink control information; or
所述终端设备发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段,所述第一字段中包括一个基于至少两个下行控制信息携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息中携带的测量信息进行CSI测量。The terminal device sends a plurality of first CSI reports, where each first CSI report of the multiple first CSI reports includes a first field, where the first field includes one that is carried based on at least two downlink control information. Measuring the CSI obtained by the information measurement, or a predefined value; the predefined value implicitly indicating that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
上述CSI的反馈过程通过隐式指示的方式指示CSI所基于的测量类型,可以节省指示带来的比特开销。The feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
结合第一方面或第二方面,在另一种可能的实现方式中,终端设备可通过多个字段承载CSI,其中的一个字段可用于承载基于单站点的CSI测量得到的CSI,也可用于承载基于多站点的CSI测量得到的CSI;另一个字段仅可用于承载基于一种测量类型测量得到的CSI,例如基于单站点的CSI测量得到的CSI。通过多个字段来承载CSI,可将基于单站点的CSI测量结果和基于多站点的CSI测量结果同时反馈给网络设备,有利于网络设备确定更加合理的传输方案和调度策略。With reference to the first aspect or the second aspect, in another possible implementation manner, the terminal device may carry CSI by using multiple fields, where one field may be used to carry CSI based on single-site CSI measurement, and may also be used for carrying CSI based on multi-site CSI measurement; another field can only be used to carry CSI measured based on one measurement type, such as CSI based on single site CSI measurement. By carrying CSI through multiple fields, the single-site CSI measurement result and the multi-site based CSI measurement result can be fed back to the network device at the same time, which is beneficial to the network device to determine a more reasonable transmission scheme and scheduling strategy.
可选地,所述终端设备发送CSI,包括:Optionally, the terminal device sends the CSI, including:
所述终端设备发送一个第二CSI报告,所述第二CSI报告包括第三字段和第四字段,所述第三字段用于承载至少一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第四字段用于承载至少一个仅基于一个下行控制信息中携带的测量信息测量得到的CSI;或者The terminal device sends a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one measurement information carried in one or at least two downlink control information. Measuring the obtained CSI, where the fourth field is used to carry at least one CSI measured based on measurement information carried in only one downlink control information; or
所述终端设备发送多个第二CSI报告,所述多个第二CSI报告中的每个第二CSI报告包括第三字段和第四字段,所述第三字段用于承载一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第四字段仅用于承载一个基于一个下行控制信息中携带的测量信息测量得到的CSI。Transmitting, by the terminal device, a plurality of second CSI reports, each second CSI report of the plurality of second CSI reports includes a third field and a fourth field, where the third field is used to carry one based on one or at least The CSI measured by the measurement information carried in the two downlink control information, the fourth field is only used to carry a CSI measured based on the measurement information carried in one downlink control information.
上述CSI的反馈过程通过一个指示字段显式地指示CSI所基于的测量类型。The feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
可选地,所述第二CSI报告还包括第五字段,所述第五字段指示所述第三字段中承载的每个CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。Optionally, the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried in the at least two downlink control information.
上述CSI的反馈过程通过隐式指示的方式指示CSI所基于的测量类型,可以节省指示带来的比特开销。The feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
第三方面,提供了一种信道状态信息的测量方法,包括:In a third aspect, a method for measuring channel state information is provided, including:
网络设备接收信道状态信息CSI;The network device receives channel state information CSI;
所述网络设备确定接收到的所述CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。The network device determines whether the received CSI is measured based on measurement information carried in the at least two downlink control information.
换句话说,网络设备在接收到CSI之后,可确定所述CSI是否基于一个下行控制信息中携带的测量信息测量得到,或者说,确定所述CSI是基于一个下行控制信息中携带的测量信息测量得到还是基于至少两个下行控制信息中携带的测量信息测量得到。In other words, after receiving the CSI, the network device may determine whether the CSI is measured based on measurement information carried in a downlink control information, or determine that the CSI is measured based on measurement information carried in a downlink control information. The obtaining is also measured based on the measurement information carried in the at least two downlink control information.
因此,终端设备可以自主地决定进行CSI测量所基于的测量类型,在向网络设备反馈CSI的同时可通过以下任意一种实现方式来向网络设备CSI测量所基于的测量类型。Therefore, the terminal device can autonomously determine the type of measurement on which the CSI measurement is based, and can measure the type of measurement on which the network device CSI is based on any of the following implementations while feeding back the CSI to the network device.
在一种可能的实现方式中,终端设备可通过一个字段承载CSI,该字段可用于承载基于单站点的CSI测量得到的CSI,也可用于承载基于多站点的CSI测量得到的CSI。In a possible implementation manner, the terminal device may carry CSI through a field, where the field may be used to carry CSI based on single-site CSI measurement, and may also be used to carry CSI measured based on multi-site CSI.
可选地,所述网络设备接收CSI,包括:Optionally, the network device receives the CSI, including:
所述网络设备接收第一CSI报告,所述第一CSI报告包括第一字段和第二字段,所述第一字段中包括至少一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。The network device receives a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes at least one measured based on measurement information carried in one or at least two downlink control information. The CSI, the second field indicates whether each CSI in the first field is measured based on measurement information carried by at least two downlink control information.
上述CSI的反馈过程通过一个指示字段显式地指示CSI所基于的测量类型。The feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
可选地,所述网络设备接收CSI,包括:Optionally, the network device receives the CSI, including:
所述网络设备接收第一CSI报告,所述第一CSI报告包括第一字段,所述第一字段中包括至少一个基于至少两个下行控制信息中携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息中携带的测量信息进行CSI测量。Receiving, by the network device, a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on measurement information carried in at least two downlink control information, or a predefined The value of the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
上述CSI的反馈过程通过隐式指示的方式指示CSI所基于的测量类型,可以节省指示带来的比特开销。The feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
可选地,所述网络设备接收CSI,包括:Optionally, the network device receives the CSI, including:
所述网络设备接收第二CSI报告,所述第二CSI报告包括第三字段和第四字段,所述第三字段用于承载至少一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第四字段用于承载至少一个仅基于一个CSI-RS资源测量得到的CSI。The network device receives a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one measurement information carried based on one or at least two downlink control information. CSI, the fourth field is used to carry at least one CSI measured based on only one CSI-RS resource.
上述CSI的反馈过程通过一个指示字段显式地指示CSI所基于的测量类型。The feedback process of the above CSI explicitly indicates the type of measurement on which the CSI is based through an indication field.
可选地,所述第二CSI报告还包括第五字段,所述第五字段指示所述第三字段中承载的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。Optionally, the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried by the at least two downlink control information.
上述CSI的反馈过程通过隐式指示的方式指示CSI所基于的测量类型,可以节省指示带来的比特开销。The feedback process of the CSI indicates the type of measurement on which the CSI is based in an implicit manner, and the bit overhead caused by the indication can be saved.
第四方面,提供了一种终端设备,用于执行第一至第二方面或第一至第二方面任意可能的实现方式中的方法。具体地,所述终端设备包括用于执行上述第一至第二方面或第一至第二方面的任一种可能的实现方式中的方法的模块。In a fourth aspect, there is provided a terminal device for performing the method of any of the first to second aspects or any of the first to second aspects. Specifically, the terminal device includes a module for performing the method in any one of the first to second aspects or the first to second aspects of the foregoing possible implementation manner.
第五方面,提供了一种网络设备,用于执行第三方面或第三方面任意可能的实现方式 中的方法。具体地,所述网络设备包括用于执行上述第三方面或第三方面的任意一种可能的实现方式中的方法的模块。In a fifth aspect, a network device is provided for performing the method of any of the third or third aspect of the possible implementation. In particular, the network device comprises means for performing the method of any of the possible implementations of the third or third aspect above.
第六方面,提供了一种终端设备,包括收发器、处理器和存储器。该处理器用于控制收发器收发信号,该存储器用于存储计算机程序,该处理器用于从存储器中调用并运行该计算机程序,使得该终端设备执行上述第一至第二方面以及第一至第二方面中任意一种可能的实现方式中的方法。In a sixth aspect, a terminal device is provided, including a transceiver, a processor, and a memory. The processor is configured to control a transceiver transceiver signal, the memory is configured to store a computer program, the processor is configured to call and run the computer program from the memory, so that the terminal device performs the first to second aspects and the first to the second A method in any of the possible implementations of the aspects.
第七方面,提供了一种网络设备,包括收发器、处理器和存储器。该处理器用于控制收发器收发信号,该存储器用于存储计算机程序,该处理器用于从存储器中调用并运行该计算机程序,使得该网络设备执行上述第三方面以及第三方面中任意一种可能实现方式中的方法。In a seventh aspect, a network device is provided, including a transceiver, a processor, and a memory. The processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the network device performs any of the third aspect and the third aspect described above The method in the implementation.
第八方面,提供了一种通信***,包括第四方面提供的终端设备和第五方面提供的网络设备,或者,包括第六方面提供的终端设备和第七方面提供的网络设备。The eighth aspect provides a communication system, including the terminal device provided by the fourth aspect and the network device provided by the fifth aspect, or the terminal device provided by the sixth aspect and the network device provided by the seventh aspect.
第九方面,提供了一种计算机程序产品,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码在计算机上运行时,使得计算机执行上述各方面中的方法。In a ninth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform the method of the above aspects.
第十方面,提供了一种计算机可读存储介质,用于存储计算机程序,所述计算机程序包括用于执行上述各方面中的方法的指令。In a tenth aspect, a computer readable storage medium is provided for storing a computer program, the computer program comprising instructions for performing the method of the above aspects.
第十一方面,提供一种芯片***,包括处理器,该处理器用于从存储器中调用并运行该计算机程序,该计算机程序用于实现上述各方面中的方法。In an eleventh aspect, a chip system is provided, comprising a processor for calling and running the computer program from a memory, the computer program for implementing the method of the above aspects.
图1是适用于本申请实施例的无线通信***的示意图;1 is a schematic diagram of a wireless communication system suitable for use in an embodiment of the present application;
图2是本申请实施例提供的信道状态信息的测量方法的示意性流程图;2 is a schematic flowchart of a method for measuring channel state information provided by an embodiment of the present application;
图3是本申请实施例提供的终端设备的示意性框图;FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present application;
图4是本申请实施例提供的网络设备的示意性框图;4 is a schematic block diagram of a network device according to an embodiment of the present application;
图5是本申请实施例提供的终端设备的另一示意性框图;FIG. 5 is another schematic block diagram of a terminal device according to an embodiment of the present application;
图6是本申请实施例提供的网络设备的另一示意性框图。FIG. 6 is another schematic block diagram of a network device according to an embodiment of the present application.
下面将结合附图,对本申请中的技术方案进行描述。The technical solutions in the present application will be described below with reference to the accompanying drawings.
本申请实施例的技术方案可以应用于各种通信***,例如:全球移动通讯(Global System of Mobile communication,GSM)***、码分多址(Code Division Multiple Access,CDMA)***、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)***、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)***、LTE频分双工(Frequency Division Duplex,FDD)***、LTE时分双工(Time Division Duplex,TDD)、通用移动通信***(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信***、未来的第五代(5th Generation,5G)***或新无线(New Radio,NR)等。The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division multiple access. (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, and the future fifth generation (5th Generation, 5G) system or new radio (New Radio, NR) and so on.
为便于理解本申请实施例,首先以图1中示出的通信***为例详细说明适用于本申请实施例的通信***。图1是适用于本申请实施例的无线通信***100的示意图。如图1所 示,该无线通信***100可以包括至少一个网络设备,例如,图1所示的网络设备#1 111、网络设备#2 112、网络设备#3 113,该无线通信***100还可以包括至少一个终端设备,例如,图1所示的终端设备121。For ease of understanding the embodiments of the present application, the communication system applicable to the embodiment of the present application is first described in detail by taking the communication system shown in FIG. 1 as an example. 1 is a schematic diagram of a wireless communication system 100 suitable for use with embodiments of the present application. As shown in FIG. 1, the wireless communication system 100 can include at least one network device, such as the network device #1 111, the network device #2 112, and the network device #3 113 shown in FIG. 1, and the wireless communication system 100 can also At least one terminal device is included, for example, the terminal device 121 shown in FIG.
在该无线通信***100中,网络设备#1 111、网络设备#2 112和网络设备#3 113中的一个或多个可同时与终端设备121通信。例如,在某一时段内,网络设备#1 111、网络设备#2 112同时与终端设备121通信。In the wireless communication system 100, one or more of the network device #1 111, the network device #2 112, and the network device #3 113 can simultaneously communicate with the terminal device 121. For example, during a certain period of time, network device #1 111 and network device #2 112 simultaneously communicate with terminal device 121.
应理解,该无线通信***中的网络设备可以是任意一种具有无线收发功能的设备或可设置于该设备的芯片,该设备包括但不限于:演进型节点B(evolved Node B,eNB)、无线网络控制器(Radio Network Controller,RNC)、节点B(Node B,NB)、基站控制器(Base Station Controller,BSC)、基站收发台(Base Transceiver Station,BTS)、家庭基站(例如,Home evolved NodeB,或Home Node B,HNB)、基带单元(BaseBand Unit,BBU),无线保真(Wireless Fidelity,WIFI)***中的接入点(Access Point,AP)、无线中继节点、无线回传节点、传输点(transmission point,TP)或者发送接收点(transmission and reception point,TRP)等,还可以为5G,如,NR,***中的gNB,或,传输点(TRP或TP),5G***中的基站的一个或一组(包括多个天线面板)天线面板,或者,还可以为构成gNB或传输点的网络节点,如基带单元(BBU),或,分布式单元(distributed unit,DU)等。It should be understood that the network device in the wireless communication system may be any device having a wireless transceiver function or a chip that can be disposed on the device, including but not limited to: an evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), and home base station (for example, Home evolved) NodeB, or Home Node B, HNB), BaseBand Unit (BBU), Access Point (AP), Wireless Relay Node, Wireless Backhaul Node in Wireless Fidelity (WIFI) System , transmission point (TP) or transmission and reception point (TRP), etc., can also be 5G, such as NR, gNB in the system, or transmission point (TRP or TP), 5G system One or a group of antennas (including multiple antenna panels), or a network node that constitutes a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (distr) Ibuted unit, DU) and so on.
在一些部署中,gNB可以包括集中式单元(centralized unit,CU)和DU。gNB还可以包括射频单元(radio unit,RU)。CU实现gNB的部分功能,DU实现gNB的部分功能,比如,CU实现无线资源控制(radio resource control,RRC),分组数据汇聚层协议(packet data convergence protocol,PDCP)层的功能,DU实现无线链路控制(radio link control,RLC)、媒体接入控制(media access control,MAC)和物理(physical,PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息,或者,由PHY层的信息转变而来,因而,在这种架构下,高层信令,如RRC层信令或PHCP层信令,也可以认为是由DU发送的,或者,由DU+RU发送的。可以理解的是,网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外,CU可以划分为接入网RAN中的网络设备,也可以将CU划分为核心网CN中的网络设备,在此不做限制。In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU implements radio resource control (RRC), the function of the packet data convergence protocol (PDCP) layer, and the DU implements the wireless chain. The functions of the radio link control (RLC), the media access control (MAC), and the physical (PHY) layer. Since the information of the RRC layer eventually becomes information of the PHY layer or is transformed by the information of the PHY layer, high-level signaling, such as RRC layer signaling or PHCP layer signaling, can also be used in this architecture. It is considered to be sent by the DU or sent by the DU+RU. It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, and the CU may be divided into network devices in the core network CN, which is not limited herein.
还应理解,该无线通信***中的终端设备也可以称为用户设备(user equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality,VR)终端设备、增强现实(Augmented Reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。本申请中将前述终端设备及可设置于前述终端设备的芯片统称为终端设备。It should also be understood that the terminal equipment in the wireless communication system may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, User terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiment of the present application may be a mobile phone, a tablet, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal. Equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( A wireless terminal in a transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. The embodiment of the present application does not limit the application scenario. In the present application, the foregoing terminal device and a chip that can be disposed in the foregoing terminal device are collectively referred to as a terminal device.
应理解,图1中仅为便于理解,示意性地示出了网络设备#1至网络设备#3和终端设备,但这不应对本申请构成任何限定,该无线通信***中还可以包括更多或更少数量的网 络设备,也可以包括更多数量的终端设备,与不同的终端设备通信的网络设备可以是相同的网络设备,也可以是不同的网络设备,与不同的终端设备通信的网络设备的数量可以相同,也可以不同,本申请对此不做限定。It should be understood that the network device #1 to the network device #3 and the terminal device are schematically illustrated in FIG. 1 for convenience of understanding, but this should not constitute any limitation to the present application, and the wireless communication system may further include more Or a smaller number of network devices, and may also include a larger number of terminal devices. Network devices that communicate with different terminal devices may be the same network device, or may be different network devices, and networks that communicate with different terminal devices. The number of devices may be the same or different, and this application does not limit this.
在CoMP传输场景中,网络设备通常需要参考终端设备反馈的CSI来确定合理的传输方案和调度策略。终端设备可根据网络设备所指示的参考信号资源,例如,信道状态信息参考信号(channel state information reference signal,CSI-RS)资源,进行CSI测量和反馈。其中,CSI例如可以包括预编码矩阵指示(precoding matrix indicator,PMI)、秩指示(rank indication,RI)和信道质量指示(channel quality indicator,CQI)等。In a CoMP transmission scenario, a network device usually needs to refer to the CSI fed back by the terminal device to determine a reasonable transmission scheme and scheduling policy. The terminal device may perform CSI measurement and feedback according to a reference signal resource indicated by the network device, for example, a channel state information reference signal (CSI-RS) resource. The CSI may include, for example, a precoding matrix indicator (PMI), a rank indication (RI), and a channel quality indicator (CQI).
在当前技术中,由于网络设备并不一定知道同时与终端设备121通信的其他网络设备有哪些,例如,在某一时段,网络设备#1 111和网络设备#2 112可同时与终端设备121通信;在另一时段,网络设备#1 111、网络设备#2 112和网络设备#3 113可同时与终端设备121通信。网络设备可根据该终端设备周围可能存在通信连接的其他网络设备,确定多种干扰测量假设条件,并向终端设备指示,以便终端设备根据该多种干扰测量假设条件进行CSI测量。In the current technology, since the network device does not necessarily know which other network devices communicate with the terminal device 121 at the same time, for example, at a certain time period, the network device #1 111 and the network device #2 112 can simultaneously communicate with the terminal device 121. At another time, the network device #1 111, the network device #2 112, and the network device #3 113 can simultaneously communicate with the terminal device 121. The network device may determine various interference measurement assumptions according to other network devices that may have a communication connection around the terminal device, and indicate to the terminal device, so that the terminal device performs CSI measurement according to the multiple interference measurement assumptions.
然而,通过网络设备指示干扰测量假设条件的方法可能会带来较大的信令开销。例如,假设有S种干扰测量假设条件,则,可能分别通过S个下行控制信息来向终端设备指示S种干扰测量假设条件,或者,在同一个下行控制信息中的多个字段分别指示S种干扰测量假设条件。在每一种干扰测量假设条件的指示中,可指示一个或多个干扰测量资源。若该终端设备周围存在多个可能存在通信连接的其他网络设备,则该干扰假设条件的数量会很多,由此带来的信令开销也非常严重。However, the method of indicating the interference measurement assumption by the network device may bring about a large signaling overhead. For example, if there are S types of interference measurement assumptions, it is possible to indicate S types of interference measurement assumptions to the terminal device by using the S downlink control information, or to indicate the S types in the multiple fields in the same downlink control information. Interference measurement assumptions. One or more interference measurement resources may be indicated in the indication of each interference measurement hypothesis. If there are multiple other network devices that may have a communication connection around the terminal device, the number of interference assumptions may be large, and the signaling overhead caused by this is also very serious.
有鉴于此,本申请提供一种信道状态信息的测量方法,能够减小信令开销。In view of this, the present application provides a method for measuring channel state information, which can reduce signaling overhead.
下面将结合附图详细说明本申请实施例提供的信道状态信息的测量方法。The method for measuring channel state information provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings.
应理解,本申请提供的信道状态信息的测量方法可适用于无线通信***,例如,图1中所示的无线通信***100。本申请实施例中的终端设备可以同时与一个或多个网络设备通信,例如,本申请实施例中的网络设备可对应于图1中的网络设备#1 111、网络设备#2 112和网络设备#3 113中的一个或多个,本申请实施例中的终端设备可以对应于图1中的终端设备121。It should be understood that the method of measuring channel state information provided by the present application is applicable to a wireless communication system, such as the wireless communication system 100 shown in FIG. The terminal device in the embodiment of the present application can communicate with one or more network devices at the same time. For example, the network device in the embodiment of the present application may correspond to the network device #1 111, the network device #2 112, and the network device in FIG. One or more of #3 113, the terminal device in the embodiment of the present application may correspond to the terminal device 121 in FIG.
还应理解,本申请实施例中的CSI-RS为用于CSI测量的参考信号的一种具体形式,而不应对本申请构成任何限定。事实上,本申请并不排除采用其他参考信号用作CSI测量,例如,解调参考信号(demodulation reference signal,DMRS),或者在未来协议中定义的具有相同或相似功能的参考信号等。It should also be understood that the CSI-RS in the embodiments of the present application is a specific form of the reference signal for CSI measurement, and should not constitute any limitation to the present application. In fact, this application does not exclude the use of other reference signals for CSI measurements, such as demodulation reference signals (DMRS), or reference signals having the same or similar functions as defined in future protocols.
以下,不失一般性,以一个终端设备与一个或多个网络设备之间的交互过程为例详细说明本申请实施例,该终端设备可以为处于无线通信***中与网络设备具有无线连接关系的任意终端设备。可以理解的是,处于该无线通信***中的任意一个终端设备均可以基于相同的技术方案进行CSI测量和反馈,本申请对此不做限定。In the following, the embodiment of the present application is described in detail by taking an interaction process between a terminal device and one or more network devices, where the terminal device may be in a wireless communication system and has a wireless connection relationship with the network device. Any terminal device. It can be understood that any one of the terminal devices in the wireless communication system can perform CSI measurement and feedback based on the same technical solution, which is not limited in this application.
图2是从设备交互的角度示出的本申请实施例提供的信道状态信息的测量方法200的示意性流程图。如图所示,图2中示出的方法200可以包括步骤210至步骤240。下面结合图2对方法200进行详细描述。FIG. 2 is a schematic flowchart of a method 200 for measuring channel state information provided by an embodiment of the present application, which is shown from the perspective of device interaction. As shown, the method 200 illustrated in FIG. 2 can include steps 210 through 240. The method 200 is described in detail below in conjunction with FIG.
在步骤210中,终端设备接收下行控制信息,该下行控制信息中携带用于CSI测量的 测量信息。In step 210, the terminal device receives downlink control information, where the downlink control information carries measurement information for CSI measurement.
相对应地,在步骤210中,网络设备发送下行控制信息。Correspondingly, in step 210, the network device sends downlink control information.
其中,向终端设备发送下行控制信息的网络设备可以是与该终端设备具有通信连接的网络设备。例如,可以为图1中示出的与终端设备121具有通信连接的一个或多个网络设备,如,网络设备#1 111、网络设备#2 112和网络设备#3 113中的一个或多个。具体地,当任意一个网络设备要与终端设备进行数据传输时,可预先通过发送CSI-RS进行CSI测量,以便确定合理的传输方案和调度策略。本申请对于向终端设备发送下行控制信息的网络设备的数量并不做限定。The network device that sends the downlink control information to the terminal device may be a network device that has a communication connection with the terminal device. For example, one or more of the network devices having the communication connection with the terminal device 121 shown in FIG. 1, such as one or more of the network device #1 111, the network device #2 112, and the network device #3 113 . Specifically, when any one of the network devices is to perform data transmission with the terminal device, CSI measurement may be performed in advance by sending a CSI-RS to determine a reasonable transmission scheme and scheduling policy. The number of network devices that send downlink control information to the terminal device is not limited in this application.
需要说明的是,该下行控制信息可以是LTE协议或NR协议中定义的DCI(downlink control information),也可以是在物理下行控制信道中传输的其他用于承载下行控制信息的信令。本申请对此不做限定。It should be noted that the downlink control information may be DCI (downlink control information) defined in the LTE protocol or the NR protocol, or may be other signaling used to carry downlink control information transmitted in the physical downlink control channel. This application does not limit this.
应理解,这里所说的物理下行控制信道可以是LTE协议或NR协议中定义的PDCCH(physical downlink control channel,物理下行控制信道)、增强物理下行控制信道(enhanced PDCCH,EPDCCH),也可以是NR中的PDCCH,以及随着网络演变而定义的具有上述功能的其他下行信道。并且,该物理下行控制信道可以是基于小区特定参考信号(cell-specific reference signal,CRS)的物理下行控制信道,或者基于DMRS的物理下行控制信道。基于CRS的物理下行控制信道可以是根据CRS进行解调的物理下行控制信道,基于DMRS的物理下行控制信道可以是根据DMRS进行解调的物理下行控制信道。CRS是网络设备配置给小区内的所有终端设备的参考信号(Reference Signal,RS),DMRS可以是网络设备配置给一个特定终端设备的RS,也可以称为终端设备特定参考信号。需要说明的是,NR***中定义的物理下行控制信道可以是上述DMRS的物理下行控制信道。It should be understood that the physical downlink control channel mentioned herein may be a PDCCH (physical downlink control channel) defined in the LTE protocol or the NR protocol, an enhanced physical downlink control channel (EPDCCH), or an NR. PDCCH in, and other downlink channels with the above functions defined as the network evolves. Moreover, the physical downlink control channel may be a physical downlink control channel based on a cell-specific reference signal (CRS) or a physical downlink control channel based on a DMRS. The physical downlink control channel based on the CRS may be a physical downlink control channel demodulated according to the CRS, and the physical downlink control channel based on the DMRS may be a physical downlink control channel demodulated according to the DMRS. The CRS is a reference signal (Reference Signal, RS) that the network device configures to all the terminal devices in the cell. The DMRS may be an RS configured by the network device to a specific terminal device, and may also be referred to as a terminal device specific reference signal. It should be noted that the physical downlink control channel defined in the NR system may be a physical downlink control channel of the foregoing DMRS.
可选地,该下行控制信息可以为与上行相关的(uplink related)下行控制信息。例如,该下行控制信息可以为LTE或NR中与上行相关的DCI。Optionally, the downlink control information may be uplink related downlink control information. For example, the downlink control information may be a DCI related to the uplink in LTE or NR.
在本申请实施例中,网络设备可通过下行控制信息向终端设备指示用于CSI测量的测量信息。作为示例而非限定,该测量信息至少包括CSI-RS资源配置的指示信息。换句话说,下行控制信息中携带有CSI-RS资源配置的指示信息。In this embodiment of the present application, the network device may indicate, by using downlink control information, measurement information for CSI measurement to the terminal device. By way of example and not limitation, the measurement information includes at least indication information of a CSI-RS resource configuration. In other words, the downlink control information carries the indication information of the CSI-RS resource configuration.
在一种可能的实现方式中,该终端设备可预先通过高层信令(例如,无线资源控制(radio resource control,RRC)消息)获取多个可能的CSI-RS资源配置,比如,该多个可能的CSI-RS资源配置可以通过多个资源配置(resource setting)来指示。此后,该终端设备可根据接收到的下行控制信息中所包含CSI-RS资源配置的指示字段,确定CSI-RS资源。其中,该指示字段例如可以为resource setting的索引(index),或者,可用于索引resource setting的指示信息,比如LTE协议或NR协议中定义的DCI中CSI请求(CSI request)字段中的索引。In a possible implementation, the terminal device may acquire multiple possible CSI-RS resource configurations in advance through high-layer signaling (for example, radio resource control (RRC) message), for example, the multiple possibilities. The CSI-RS resource configuration can be indicated by multiple resource settings. Thereafter, the terminal device may determine the CSI-RS resource according to the indication field of the CSI-RS resource configuration included in the received downlink control information. The indication field may be, for example, an index of a resource setting, or an indication information that may be used to index a resource setting, such as an index in a CSI request (CSI request) field in a DCI defined in an LTE protocol or an NR protocol.
可选地,该下行控制信息中携带的测量信息还包括码本子集限制(codebook subset restriction,CSR)的指示信息。Optionally, the measurement information carried in the downlink control information further includes indication information of a codebook subset restriction (CSR).
具体地,该码本子集限制的指示信息用于指示被限制的码本子集,该被限制的码本子集可理解为网络设备当前使用的码本子集。其中,码本子集可包括码本中的部分或全部码字。Specifically, the indication information of the codebook subset restriction is used to indicate a restricted codebook subset, and the restricted codebook subset can be understood as a codebook subset currently used by the network device. The codebook subset may include some or all of the codewords in the codebook.
在一种可能的设计中,上述CSI-RS资源配置的指示信息和码本子集限制的指示信息 由同一个字段承载。可选地,该测量信息可承载于下行控制信息的某一字段中。例如,LTE协议或NR协议中定义的DCI中的CSI request字段。具体来说,终端设备可通过高层信令(例如,RRC消息)预先获取到多个CSI-RS资源配置和码本子集限制的信息。其中,CSI-RS资源配置可以通过RRC中的资源配置(resource setting)指示,该码本限制子集可通过RRC消息中的报告配置(reporting setting)指示。其中,reporting setting可用于指示需要反馈(或者说,上报)的CSI以及反馈CSI使用的资源。resource setting与reporting setting可具有对应关系,两者的对应关系可通过连接(link)来指示。终端设备在预先接收到上述RRC消息后,便可根据其中的resource setting、reporting setting以及link,确定多个CSI-RS资源与多个码本子集限制的对应关系,也就是获取到了多个resource setting的索引、多个reporting setting的索引与可承载在CSI request字段中多个索引的一一对应关系的映射关系。网络设备可通过一个索引来指示一个resource setting的索引与一个reporting setting的索引。此后,终端设备可根据接收到的DCI中的CSI request字段以及预先获取的映射关系确定所指示的resource setting和reporting setting,进而确定与DCI中指示的resource setting对应的CSI-RS资源和与reporting setting对应的码本子集。由于上文中已经说明,下行控制信息与网络设备具有一一对应关系,则终端设备根据下行控制信息所确定的CSI-RS资源和码本子集也就是发送该下行控制信息的网络设备所使用的CSI-RS资源和码本子集。In a possible design, the indication information of the CSI-RS resource configuration and the indication information of the codebook subset restriction are carried by the same field. Optionally, the measurement information may be carried in a certain field of the downlink control information. For example, the CSI request field in the DCI defined in the LTE protocol or the NR protocol. Specifically, the terminal device may pre-acquire information of multiple CSI-RS resource configurations and codebook subset restrictions through higher layer signaling (eg, RRC message). The CSI-RS resource configuration may be indicated by a resource setting in the RRC, and the codebook restricted subset may be indicated by a reporting setting in the RRC message. The reporting setting can be used to indicate the CSI that needs to be fed back (or reported) and the resources used by the feedback CSI. The resource setting and the reporting setting may have a corresponding relationship, and the correspondence between the two may be indicated by a link. After receiving the RRC message in advance, the terminal device may determine, according to the resource setting, the reporting setting, and the link, the correspondence between the multiple CSI-RS resources and the plurality of codebook subset restrictions, that is, multiple resources are obtained. The index of the setting, the index of the plurality of reporting settings, and the mapping relationship of the one-to-one correspondence of the plurality of indexes that can be carried in the CSI request field. The network device can indicate an index of a resource setting and an index of a reporting setting through an index. Thereafter, the terminal device may determine the indicated resource setting and reporting setting according to the CSI request field in the received DCI and the pre-acquired mapping relationship, and further determine the CSI-RS resource and the reporting setting corresponding to the resource setting indicated in the DCI. The corresponding codebook subset. As described above, the downlink control information has a one-to-one correspondence with the network device, and the CSI-RS resource and the codebook subset determined by the terminal device according to the downlink control information are also used by the network device that sends the downlink control information. CSI-RS resources and codebook subsets.
在本申请实施例中,该终端设备可以根据预设时段内接收到的下行控制信息的数量,进行不同类型的CSI测量。具体地,终端设备可执行下文所述的步骤220(包括2201或步骤2202)。In the embodiment of the present application, the terminal device may perform different types of CSI measurement according to the quantity of downlink control information received within a preset time period. Specifically, the terminal device may perform step 220 (including 2201 or step 2202) described below.
在步骤220中,在该预设时段内接收到一个下行控制信息,该终端设备仅基于一个下行控制信息中携带的测量信息进行CSI测量,否则,基于该预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量。In step 220, a downlink control information is received in the preset time period, and the terminal device performs CSI measurement based on only the measurement information carried in one downlink control information, otherwise, based on at least two received in the preset time period. The measurement information carried in the downlink control information is subjected to each CSI measurement.
在一种可能的实现方式中,终端设备可以将首次接收到下行控制信息的时刻作为起始时刻,该起始时刻往后延伸一个预设时段所至的时刻可作为结束时刻,该起始时刻至结束时刻的时间间隔即一个预设时段,为便于区分,可理解为第一个预设时段。终端设备可实时地接收来自网络设备的下行控制信息,在一个预设时段结束后,终端设备再次接收到下行控制信息的时刻又可认为是下一个预设时段的起始时刻,再次接收到的下行控制信息可认为是下一个预设时段的第一个下行控制信息。由该起始时刻往后延伸一个预设时段所至的时刻可作为结束时刻,该起始时刻至结束时刻的时间间隔即一个预设时段,为便于区分,可理解为上一个预设时段之后的下一个预设时段。换句话说,一个预设时段的起始时刻可以是上一个预设时段的结束时刻之后接收到第一个下行控制信息的时刻。In a possible implementation, the terminal device may use the time when the downlink control information is received for the first time as the starting time, and the time when the starting time extends backward for a preset time period may be used as the ending time, where the starting time is The time interval to the end time is a preset time period. For convenience of distinction, it can be understood as the first preset time period. The terminal device can receive the downlink control information from the network device in real time. After the end of a preset time period, the time when the terminal device receives the downlink control information again can be regarded as the start time of the next preset time period, and is received again. The downlink control information can be regarded as the first downlink control information of the next preset time period. The time from the start time to the back of the preset time period can be used as the end time. The time interval from the start time to the end time is a preset time period. For the sake of distinction, it can be understood as the last preset time period. The next preset time period. In other words, the starting time of one preset time period may be the time when the first downlink control information is received after the end time of the last preset time period.
在另一种可能的实现方式中,终端设备可直接根据该通信***定义的时域资源作为预设时段。例如,将该通信***定义的一个时间单元作为一个预设时段。其中,时间单元例如可以是子帧、时隙(slot)、无线帧、微时隙(mini slot或sub slot)、多个聚合的时隙、多个聚合的子帧、符号等等,甚至还可以是传输时间间隔(transmission time interval,TTI),本申请对此不做限定。例如,该预设时段可以为该通信***中定义的一个时隙。In another possible implementation manner, the terminal device may directly use the time domain resource defined by the communication system as the preset time period. For example, a time unit defined by the communication system is taken as a preset time period. The time unit may be, for example, a subframe, a slot, a radio frame, a mini slot or a sub slot, a plurality of aggregated slots, a plurality of aggregated subframes, symbols, and the like, and even It may be a transmission time interval (TTI), which is not limited in this application. For example, the preset time period can be one time slot defined in the communication system.
终端设备在一个预设时段内,可能仅接收到一个下行控制信息,也可能接收到多个下行控制信息。终端设备可根据在一个预设时段内接收到的下行控制信息的数量选择性地执 行下述步骤2201或步骤2202中的一个或两个。The terminal device may receive only one downlink control information or multiple downlink control information within a preset time period. The terminal device can selectively perform one or both of the following steps 2201 or 2202 according to the number of downlink control information received within a preset period of time.
需要说明的是,上述预设时段的大小可以是网络设备预先通知终端设备的,例如由网络设备确定后通过信令通知终端设备,也可以是预先定义的,例如协议定义。It should be noted that the size of the preset time period may be that the network device notifies the terminal device in advance, for example, the terminal device is notified by the network device, and may be predefined, for example, a protocol definition.
可选地,该预设时段的大小可为一个或多个时间单元。例如,该预设时段的大小为一个或多个时隙。Optionally, the preset time period may be one or more time units. For example, the size of the preset time period is one or more time slots.
应理解,上述列举的各时间单元的大小可以根据LTE协议或NR协议而定义,也可以根据未来协议而定义,本申请对于时间单元的大小不做限定。还应理解,上述列举的预设时段的大小仅为示例性说明,而不应对本申请构成任何限定,本申请对于预设时段的大小不做限定。It should be understood that the size of each time unit enumerated above may be defined according to the LTE protocol or the NR protocol, or may be defined according to a future protocol. The size of the time unit is not limited in this application. It should be understood that the size of the preset time period listed above is only an exemplary description, and should not be construed as limiting the present application. The size of the preset time period is not limited.
在预设时段内,若终端设备接收到M(M≥2,M为整数)个下行控制信息,该M个下行控制信息可能来自M个网络设备,换句话说,该M个下行控制信息与M个网络设备可具有一一对应关系,每个网络设备可发送一个下行控制信息,每个网络设备所发送的下行控制信息中可携带用于CSI测量的测量信息。例如,图1中网络设备#1发送的下行控制信息中携带的测量信息至少包括CSI-RS资源配置的指示信息,以指示该网络设备#1所发送的CSI-RS的资源位置,或者说,指示接收CSI-RS的资源位置。In the preset time period, if the terminal device receives M (M≥2, M is an integer) downlink control information, the M downlink control information may be from M network devices, in other words, the M downlink control information and The M network devices may have a one-to-one correspondence, and each network device may send one downlink control information, and the downlink control information sent by each network device may carry measurement information for CSI measurement. For example, the measurement information carried in the downlink control information sent by the network device #1 in FIG. 1 includes at least the indication information of the CSI-RS resource configuration, to indicate the resource location of the CSI-RS sent by the network device #1, or Indicates the resource location where the CSI-RS is received.
在步骤2201中,在预设时段内接收到多个下行控制信息,终端设备基于该预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量。In step 2201, a plurality of downlink control information is received in a preset time period, and the terminal device performs each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period.
具体地,终端设备可基于预设时段内接收到的M个下行控制信息中的N(M≥N≥2,N为整数)下行控制信息携带的测量信息进行每一次CSI测量,得到多个CSI,该多个CSI中的每个CSI都可以是基于该预设时段内接收到的至少两个下行控制信息携带的测量信息进行CSI测量得到的。该多个CSI可以是针对多个网络设备分别进行CSI测量得到的,该多个网络设备可以是与N个下行控制信息中的部分或全部下行控制信息所对应的网络设备。并且,任意两次CSI测量所基于的下行控制信息的数量可能是不同的。也就是说,在多次CSI测量中,所基于的下行控制信息的数量N的取值可能是不同的。Specifically, the terminal device may perform each CSI measurement according to the measurement information carried by the downlink control information of N (M≥N≥2, N is an integer) of the M downlink control information received in the preset time period, and obtain multiple CSIs. Each CSI of the multiple CSIs may be obtained by performing CSI measurement based on measurement information carried by at least two downlink control information received in the preset time period. The plurality of CSIs may be obtained by performing CSI measurement on a plurality of network devices, where the plurality of network devices may be network devices corresponding to some or all of the N downlink control information. Also, the number of downlink control information on which any two CSI measurements are based may be different. That is to say, in the multiple CSI measurement, the value of the number N of downlink control information on which it is based may be different.
或者说,终端设备可以针对预设时段内接收到的多个下行控制信息进行多次CSI测量,每一次CSI测量都可以是基于该多个下行控制信息中的至少两个下行控制信息携带的测量信息进行的,也就是说,每一次CSI测量可以是针对多个网络设备中的一个网络设备进行的CSI测量。In addition, the terminal device may perform multiple CSI measurements for multiple downlink control information received in a preset time period, and each CSI measurement may be a measurement carried based on at least two downlink control information of the multiple downlink control information. Information is performed, that is, each CSI measurement may be a CSI measurement for one of a plurality of network devices.
在本申请实施例中,若终端设备在预设时段内接收到M个下行控制信息,则可认为该终端设备在预设时段内接收到来自M个网络设备的下行控制信息。终端设备可基于该M个下行控制信息中的N个下行控制信息中携带的测量信息进行每一次CSI测量。为便于区分和说明,该多个网络设备例如可包括第一网络设备和第二网络设备。In the embodiment of the present application, if the terminal device receives the M downlink control information within the preset time period, the terminal device may be configured to receive the downlink control information from the M network devices within the preset time period. The terminal device may perform each CSI measurement based on the measurement information carried in the N downlink control information of the M downlink control information. For ease of differentiation and illustration, the plurality of network devices may include, for example, a first network device and a second network device.
即,步骤210可具体包括:That is, step 210 may specifically include:
步骤2101,终端设备在预设时段内接收到来自第一网络设备的下行控制信息;Step 2101: The terminal device receives downlink control information from the first network device within a preset time period.
步骤2102,终端设备在预设时段内接收到来自第二网络设备的下行控制信息。Step 2102: The terminal device receives downlink control information from the second network device within a preset time period.
第一网络设备和第二网络设备分别向终端设备发送下行控制信息后,就有可能基于各自发送的下行控制信息中所指示的CSI-RS资源发送CSI-RS以便终端设备进行CSI测量,从而为后续的资源调度等做准备。在多个网络设备分别向终端设备发送CSI-RS的时候,对于该多个网络设备中的任意一个网络设备而言,其他网络设备发送的CSI-RS都可能成 为这个网络设备的干扰信号。例如,第一网络设备发送的CSI-RS可能成为第二网络设备的干扰信号,第二网络设备发送的CSI-RS可能成为第一网络设备的干扰信号。因此终端设备可针对该多个网络设备分别进行CSI测量得到待反馈给多个网络设备的多个CSI,该多个CSI中的每个CSI都可以是基于该多个下行控制信息中携带的测量信息测量得到。After the first network device and the second network device respectively send downlink control information to the terminal device, it is possible to send the CSI-RS based on the CSI-RS resources indicated in the downlink control information that is sent separately, so that the terminal device performs CSI measurement, thereby Prepare for subsequent resource scheduling, etc. When a plurality of network devices respectively send a CSI-RS to a terminal device, for any one of the plurality of network devices, the CSI-RS sent by the other network device may become an interference signal of the network device. For example, the CSI-RS sent by the first network device may become an interference signal of the second network device, and the CSI-RS sent by the second network device may become an interference signal of the first network device. Therefore, the terminal device may perform CSI measurement on the multiple network devices to obtain multiple CSIs to be fed back to multiple network devices, and each CSI in the multiple CSIs may be based on measurements carried in the multiple downlink control information. Information is measured.
应理解,上文以及附图仅为便于说明,以第一网络设备和第二网络设备为例说明了多个网络设备向终端设备发送下行控制信息和CSI-RS的过程,但这不应对本申请构成任何限定,终端设备在预设时段内还可能接收到更多或更少网络设备发送的下行控制信息。本申请对于向终端设备发送下行控制信息的网络设备的数量不做限定,或者说,本申请对于终端设备接收到的下行控制信息的数量不做限定。It should be understood that the above and the accompanying drawings are only for convenience of description, and the first network device and the second network device are taken as an example to describe a process in which multiple network devices send downlink control information and CSI-RS to the terminal device, but this should not be The application constitutes any limitation, and the terminal device may also receive downlink control information sent by more or less network devices within a preset time period. The number of the network device that sends the downlink control information to the terminal device is not limited, or the number of the downlink control information received by the terminal device is not limited.
在步骤2201中,该终端设备可基于N个下行控制信息中携带的测量信息进行每一次CSI测量。具体地说,终端设备可针对M个下行控制信息中的第m(0<m≤M)个下行控制信息,基于N个下行控制信息中携带的测量信息进行针对CSI测量。这里,M个下行控制信息中的第m个下行控制信息与N个下行控制信息中的第n个下行控制信息可具有对应关系。In step 2201, the terminal device may perform each CSI measurement based on the measurement information carried in the N downlink control information. Specifically, the terminal device may perform CSI measurement based on the measurement information carried in the N downlink control information for the mth (0<m≤M) downlink control information of the M downlink control information. Here, the mth downlink control information of the M downlink control information and the nth downlink control information of the N downlink control information may have a corresponding relationship.
举例而言,终端设备在预设时段内接收到5个下行控制信息,即,M=5,为便于区分和说明,分别记作:下行控制信息#1、下行控制信息#2、下行控制信息#3、下行控制信息#4和下行控制信息#5。终端设备可基于该5个下行控制信息中的3个下行控制信息进行CSI测量,即,N=3。其中,该3个下行控制信息可以为上述5个下行控制信息中的下行控制信息#1、下行控制信息#3和下行控制信息#5。终端设备可以根据预设的规则,将M个下行控制信息中的第m个与N个下行控制信息中的第n个对应起来。例如,按照下行控制信息的编号从小到大,该5个下行控制信息中的下行控制信息#1为该5个下行控制信息中的第1个下行控制信息,该5个下行控制信息中的下行控制信息#2为该5个下行控制信息中的第2个下行控制信息,以此类推。与此相似地,该3个下行控制信息中的下行控制信息#1为该3个下行控制信息中的第1个下行控制信息,该3个下行控制信息中的下行控制信息#3为该3个下行控制信息中的第2个下行控制信息,该3个下行控制信息中的下行控制信息#5为该3个下行控制信息中的第3个下行控制信息。换句话说,该N个下行控制信息中的第1个下行控制信息为该M个下行控制信息中的第1个下行控制信息,该N个下行控制信息中的第2个下行控制信息为该M个下行控制信息中的第3个下行控制信息,该N个下行控制信息中的第3个下行控制信息为该M个下行控制信息中的第5个下行控制信息。应理解,上述举例仅为便于理解而示出,而不应对本申请构成任何限定,本申请对用于确定N个下行控制信息的第n个与M个下行控制信息中的第m个之间对应关系的规则并不做限定。For example, the terminal device receives five downlink control information in a preset time period, that is, M=5. For convenience of distinction and description, the terminal device is respectively recorded as: downlink control information #1, downlink control information #2, and downlink control information. #3, downlink control information #4 and downlink control information #5. The terminal device may perform CSI measurement based on three downlink control information of the five downlink control information, that is, N=3. The downlink control information may be downlink control information #1, downlink control information #3, and downlink control information #5 among the five downlink control information. The terminal device may associate the mth of the M downlink control information with the nth of the N downlink control information according to a preset rule. For example, according to the number of the downlink control information, the downlink control information #1 of the five downlink control information is the first downlink control information of the five downlink control information, and the downlink of the five downlink control information. Control information #2 is the second downlink control information among the five downlink control information, and so on. Similarly, the downlink control information #1 of the three downlink control information is the first downlink control information of the three downlink control information, and the downlink control information #3 of the three downlink control information is the third The second downlink control information of the downlink control information, and the downlink control information #5 of the three downlink control information is the third downlink control information of the three downlink control information. In other words, the first downlink control information of the N downlink control information is the first downlink control information of the M downlink control information, and the second downlink control information of the N downlink control information is the The third downlink control information of the M downlink control information, and the third downlink control information of the N downlink control information is the fifth downlink control information of the M downlink control information. It should be understood that the above examples are only for ease of understanding, and should not constitute any limitation to the present application. The present application is between the nth and Mth downlink control information for determining N downlink control information. The rules of the correspondence are not limited.
其中,m可以在[1,M]中取一个或多个值,也就是,终端设备可针对M个下行控制信息中的一个或多个分别进行CSI测量,或者说,终端设备可针对与M个下行控制信息对应的M个网络设备中的某一个或多个网络设备分别进行CSI测量;m也可以取[1,M]中的每个值,也就是,终端设备可针对M个下行控制信息中的每个下行控制信息分别进行CSI测量,或者说,终端设备可针对M个网络设备中的每个网络设备分别进行CSI测量,本申请对此不做限定。Wherein, m may take one or more values in [1, M], that is, the terminal device may perform CSI measurement separately for one or more of the M downlink control information, or the terminal device may target the M One or more of the M network devices corresponding to the downlink control information respectively perform CSI measurement; m may also take each value of [1, M], that is, the terminal device may be for M downlink control Each of the downlink control information in the information is subjected to CSI measurement, or the terminal device can perform CSI measurement for each of the M network devices, which is not limited in this application.
在针对第n个下行控制信息进行CSI测量的过程中,可以将N个下行控制信息中除 第n个下行控制信息之外的下行控制信息所指示的CSI-RS资源作为第n个下行控制信息所指示的CSI-RS资源的干扰测量资源。N个下行控制信息中除第n个下行控制信息之外的剩余N-1个下行控制所指示的CSI-RS资源可以为第n个下行控制信息所指示的CSI-RS资源的干扰测量资源。换句话说,在针对第n个下行控制信息基于N个下行控制信息中携带的测量信息进行CSI测量的过程中,除N中下行控制信息中第n个下行控制信息之外的M-1个下行控制信息所指示的CSI-RS资源中的部分或全部可以为第n个下行控制信息所指示的CSI-RS资源的干扰测量资源。The CSI-RS resource indicated by the downlink control information except the nth downlink control information may be used as the nth downlink control information in the process of performing CSI measurement on the nth downlink control information. Interference measurement resources of the indicated CSI-RS resources. The CSI-RS resources indicated by the remaining N-1 downlink control except the nth downlink control information of the N downlink control information may be the interference measurement resources of the CSI-RS resources indicated by the nth downlink control information. In other words, in the process of performing CSI measurement on the nth downlink control information based on the measurement information carried in the N downlink control information, M-1 except the nth downlink control information in the N downlink control information Some or all of the CSI-RS resources indicated by the downlink control information may be interference measurement resources of the CSI-RS resources indicated by the nth downlink control information.
在本申请中,为便于区分,可以将结合多个下行控制信息中携带的测量信息的CSI测量称为基于多站点的CSI测量。基于多站点的CSI测量可理解为CSI的一种测量类型。In the present application, for convenience of distinction, CSI measurement combined with measurement information carried in multiple downlink control information may be referred to as multi-site based CSI measurement. Multi-site based CSI measurements can be understood as a type of measurement of CSI.
具体来说,终端设备可结合来自某个网络设备(例如第一网络设备)的CSI-RS和来自一个或多个其他网络设备(例如第二网络设备)的CSI-RS进行CSI测量。若该CSI测量是针对第一网络设备的CSI测量,测量得到的CSI是反馈给该第一网络设备的。对于第一网络设备而言,来自第二网络设备的CSI-RS可以被认为是干扰信号。终端设备可根据第一网络设备的CSI-RS资源和第二网络设备的CSI-RS资源进行CSI测量,得到待反馈的CSI,例如,CQI。In particular, the terminal device may perform CSI measurements in conjunction with CSI-RS from a certain network device (eg, the first network device) and CSI-RS from one or more other network devices (eg, the second network device). If the CSI measurement is a CSI measurement for the first network device, the measured CSI is fed back to the first network device. For the first network device, the CSI-RS from the second network device can be considered an interference signal. The terminal device may perform CSI measurement according to the CSI-RS resource of the first network device and the CSI-RS resource of the second network device, and obtain a CSI to be fed back, for example, a CQI.
进一步地,终端设备还可结合多个下行控制信息所指示的码本子集进行CSI测量。在终端设备接收到M个下行控制信息的情况下,终端设备可基于该M个下行控制信息中的至少两个下行控制信息所指示的码本子集进行CSI测量。在M个下行控制信息中,除N个下行控制信息中第n个下行控制信息之外的剩余M-1个下行控制信息所指示的CSI-RS资源中的部分或全部可以为第n个下行控制信息所指示的CSI-RS资源的干扰测量资源。N个下行控制信息中除第n个下行控制信息之外的下行控制信息所指示的码本子集可用于对作为干扰信号的CSI-RS进行预编码,该N个下行控制信息中的第n个下行控制信息所指示的码本子集可用于对第n个下行控制信息所指示的CSI-RS资源上承载的CSI-RS进行预编码。具体地,终端设备可遍历该除第n个下行控制信息之外的N-1个下行控制信息所指示的码本子集对干扰信号进行预编码,并遍历第n个下行控制信息所指示的码本子集来对与第n个下行控制信息所对应的CSI-RS进行预编码。其中,N个下行控制信息中的第n个下行控制信息与M个下行控制信息中的第m个下行控制信息的对应关系在上文中已经结合例子做了详细说明,这里不再赘述。通过在[1,M]中对m取值,例如,m可以在[1,M]中取一个或多个值,也可以取[1,M]中的每个值,从而确定最优的预编码矩阵,即确定待反馈的CSI,例如,PMI。Further, the terminal device may perform CSI measurement in combination with the codebook subset indicated by the multiple downlink control information. When the terminal device receives the M downlink control information, the terminal device may perform CSI measurement based on the codebook subset indicated by at least two downlink control information of the M downlink control information. In the M downlink control information, part or all of the CSI-RS resources indicated by the remaining M-1 downlink control information except the nth downlink control information of the N downlink control information may be the nth downlink. The interference measurement resource of the CSI-RS resource indicated by the control information. The codebook subset indicated by the downlink control information except the nth downlink control information in the N downlink control information may be used to precode the CSI-RS as the interference signal, and the nth of the N downlink control information The codebook subset indicated by the downlink control information may be used to precode the CSI-RS carried on the CSI-RS resource indicated by the nth downlink control information. Specifically, the terminal device may perform precoding on the interference signal by traversing the codebook subset indicated by the N-1 downlink control information except the nth downlink control information, and traverse the indication indicated by the nth downlink control information. The codebook subset precodes the CSI-RS corresponding to the nth downlink control information. The corresponding relationship between the nth downlink control information and the mth downlink control information of the M downlink control information has been described in detail above with reference to the examples, and details are not described herein again. By taking a value for m in [1, M], for example, m can take one or more values in [1, M], or take each value in [1, M] to determine the optimal The precoding matrix, ie the CSI to be fed back, eg PMI.
需要说明的是,用于确定干扰测量资源的下行控制信息的数量和用于对干扰信号进行预编码的码本子集所对应的下行控制信息的数量可以是相同的,也可以是不同的。It should be noted that the number of downlink control information used to determine the interference measurement resource and the number of downlink control information corresponding to the codebook subset used for precoding the interference signal may be the same or different.
例如,终端设备可以根据第一网络设备的码本子集(为便于区分和说明,记作第一码本子集)对第一网络设备发送的CSI-RS(为便于区分和说明,例如记作第一CSI-RS)进行预编码,得到预编码后的第一CSI-RS,并根据第二网络设备的码本子集(为便于区分和说明,记作第二码本子集)对第二网络设备发送的CSI-RS(为便于区分和说明,例如记作第二CSI-RS)进行预编码,得到预编码后的第二CSI-RS。其后,分别将预编码后的第一CSI-RS作为预编码后的第二CSI-RS的干扰信号,将预编码后的第二CSI-RS作为预编码后的第一CSI-RS作为预编码后的第一CSI-RS的干扰信号,来分别计算与第一网络设 备对应的CQI和与第二网络设备对应的CQI,通过分别遍历第一码本子集和第二码本子集,来确定与两个网络设备对应的CQI达到最优时分别使用的第一码本子集中的一个预编码矩阵和第二码本子集中的一个预编码矩阵,并分别将这两个预编码矩阵反馈给网络设备。For example, the terminal device may send a CSI-RS to the first network device according to a codebook subset of the first network device (referred to as a first codebook subset for convenience of distinction and description) (for convenience of distinction and description, for example, Performing precoding on the first CSI-RS to obtain a pre-coded first CSI-RS, and according to the codebook subset of the second network device (for convenience of distinction and description, recorded as the second codebook subset) The CSI-RS transmitted by the second network device (for convenience of distinction and description, for example, referred to as a second CSI-RS) is precoded to obtain a precoded second CSI-RS. Thereafter, the pre-coded first CSI-RS is used as the pre-coded second CSI-RS interference signal, and the pre-coded second CSI-RS is used as the pre-coded first CSI-RS as the pre-coded Interleaving the first CSI-RS interference signal to calculate a CQI corresponding to the first network device and a CQI corresponding to the second network device, respectively, by traversing the first codebook subset and the second codebook subset, respectively Determining a precoding matrix in the first codebook subset and a precoding matrix in the second codebook subset respectively used when the CQI corresponding to the two network devices is optimal, and respectively feeding the two precoding matrices to Network equipment.
需要说明的是,上述第一网络设备和第二网络设备仅为便于区分而命名,而不应对本申请构成任何限定。第一网络设备和第二网络设备可以是相对的,第一网络设备可以是终端设备进行CSI测量所针对的网络设备,可以是协作集内的任意一个网络设备,在确定了第一网络设备之后,第二网络设备可以是协作集内除了第一网络设备之外的一个或多个网络设备。这里,协作集可理解为潜在的后续可能会与终端设备进行数据传输的网络设备的集合。It should be noted that the foregoing first network device and the second network device are named only for convenience of distinction, and should not be construed as limiting the application. The first network device and the second network device may be opposite. The first network device may be a network device for which the terminal device performs CSI measurement, and may be any one of the network devices in the collaboration set. After determining the first network device, The second network device may be one or more network devices in the collaboration set other than the first network device. Here, a collaboration set can be understood as a set of potential network devices that may subsequently perform data transmission with the terminal device.
举例来说,在图1中示出的无线通信***100中,若网络设备#1、网络设备#2和网络设备#3在某一时段内都向终端设备发送CSI-RS,也就是说,网络设备#1、网络设备#2和网络设备#3在后续可能都会与终端设备传输数据。终端设备可分别针对网络设备#1、网络设备#2和网络设备#3在进行CSI测量。若针对网络设备#1进行CSI测量,则网络设备#1可以为第一网络设备,网络设备#2和网络设备#3可以为第二网络设备;若针对网络设备#2进行CSI测量,则网络设备#2可以为第一网络设备,网络设备#1和网络设备#3可以为第二网络设备;以此类推。For example, in the wireless communication system 100 shown in FIG. 1, if the network device #1, the network device #2, and the network device #3 transmit the CSI-RS to the terminal device for a certain period of time, that is, Network device #1, network device #2, and network device #3 may transmit data with the terminal device in the future. The terminal device can perform CSI measurement for the network device #1, the network device #2, and the network device #3, respectively. If the CSI measurement is performed for the network device #1, the network device #1 may be the first network device, and the network device #2 and the network device #3 may be the second network device; if the CSI measurement is performed for the network device #2, the network Device #2 may be the first network device, network device #1 and network device #3 may be the second network device; and so on.
若终端设备针对网络设备#1进行CSI测量,则可将来自网络设备#1的CSI-RS作为目标信号,可将来自网络设备#2和网络设备#3的CSI-RS作为干扰信号,进行CSI测量,该CSI测量得到的CSI是反馈给网络设备#1的CSI。这里,网络设备#1可理解为第一网络设备的一个例子,网络设备#2和网络设备#3可理解为第二网络设备的两个例子。If the terminal device performs CSI measurement for the network device #1, the CSI-RS from the network device #1 can be used as a target signal, and the CSI-RS from the network device #2 and the network device #3 can be used as an interference signal to perform CSI. The CSI measured by the CSI measurement is the CSI fed back to the network device #1. Here, the network device #1 can be understood as an example of the first network device, and the network device #2 and the network device #3 can be understood as two examples of the second network device.
终端设备在预设时段内接收到多个下行控制信息的情况下,可选地,该多个下行控制信息中的每个下行控制信息中携带一个reporting setting。也就是说,每个下行控制信息中可携带一个resource setting的指示信息和一个reporting setting的指示信息,其中,resource setting和reporting setting可通过同一个指示信息来指示。When the terminal device receives the multiple downlink control information in the preset time period, optionally, each downlink control information of the multiple downlink control information carries a reporting setting. That is, each downlink control information may carry an indication information of a resource setting and an indication information of a reporting setting, wherein the resource setting and the reporting setting may be indicated by the same indication information.
可选地,该多个下行控制信息中仅一个下行控制信息中携带多个reporting setting。也就是说,每个下行控制信息中可携带一个resource setting的指示信息,但仅有一个下行控制信息中可携带多个reporting setting的指示信息,该多个reporting setting的指示信息用于指示多个reporting setting,该多个reporting setting可以与上述多个下行控制信息所对应的多个网络设备一一对应,可用于指示分别需要向该多个网络设备反馈的CSI以及反馈CSI的资源。可选地,该多个reporting setting还可用于指示多个CSR,该多个CSI可与多个网络设备一一对应,每个网络设备使用的码本子集可以由一个CSR指示。Optionally, only one of the plurality of downlink control information carries multiple reporting settings. That is, each downlink control information may carry a resource setting indication information, but only one downlink control information may carry multiple indication information of the reporting setting, and the indication information of the multiple reporting settings is used to indicate multiple The reporting setting may be in one-to-one correspondence with the plurality of network devices corresponding to the multiple downlink control information, and may be used to indicate CSI and feedback CSI resources that need to be fed back to the multiple network devices respectively. Optionally, the multiple reporting settings may also be used to indicate multiple CSRs, which may be in one-to-one correspondence with multiple network devices, and the codebook subset used by each network device may be indicated by one CSR.
可选地,该多个下行控制信息中仅一个下行控制信息中携带一个reporting setting。也就是说,每个下行控制信息中可携带一个resource setting的指示信息,但仅有一个下行控制信息(为便于区分和说明,记作下行控制信息#A)中可携带一个reporting setting的指示信息,该reporting setting的指示信息指示一个reporting setting,该reporting setting可用于指示需要反馈的CSI(例如包括但不限于PMI、CQI或RI中的一项或多项)以及反馈CSI的资源,即,针对每个网络设备测量上报的CSI的类型可以是相同的,并且可通过所指示的反馈CSI的资源,将针对多个网络设备测量得到的CSI反馈给同一网络设备,例如, 发送该下行控制信息#A的网络设备。可选地,该reporting setting还可用于指示一个CSR,即,多个网络设备可以使用相同的码本子集。Optionally, only one downlink control information of the multiple downlink control information carries a reporting setting. That is, each downlink control information may carry a resource setting indication information, but only one downlink control information (referred to as downlink control information #A for convenience of distinction and description) may carry a reporting information of a reporting setting. The reporting information of the reporting setting indicates a reporting setting, and the reporting setting may be used to indicate CSI that needs to be fed back (for example, including but not limited to one or more of PMI, CQI, or RI) and resources for feeding back CSI, that is, for The type of CSI reported by each network device may be the same, and the CSI measured by the multiple network devices may be fed back to the same network device by using the indicated resource of the feedback CSI, for example, sending the downlink control information. A network device. Optionally, the reporting setting may also be used to indicate a CSR, that is, multiple network devices may use the same codebook subset.
需要说明的是,终端设备在预设时段内接收到多个下行控制信息的情况下,可以基于该多个下行控制信息中携带的测量信息进行每一次CSI测量,即,基于多站点的CSI测量,还可以基于该多个下行控制信息中的每个下行控制信息中携带的测量进行分别独立地进行CSI测量,即,基于单站点的CSI测量。由此可以获得更多的CSI反馈给网络设备,以便网络设备确定合理的传输方案和调度策略。It should be noted that, when the terminal device receives multiple downlink control information in a preset time period, each CSI measurement may be performed based on the measurement information carried in the multiple downlink control information, that is, the CSI measurement based on multiple sites. The CSI measurement may also be independently performed based on the measurements carried in each of the plurality of downlink control information, that is, based on the single site CSI measurement. Thereby, more CSI feedback can be obtained to the network device, so that the network device determines a reasonable transmission scheme and scheduling strategy.
在步骤2202中,在预设时段内接收到一个下行控制信息,终端设备仅基于该一个下行控制信息中携带的测量信息进行CSI测量。In step 2202, a downlink control information is received in the preset time period, and the terminal device performs CSI measurement based only on the measurement information carried in the one downlink control information.
在本申请实施例中,若终端设备在预设时段内接收到一个下行控制信息,则可认为该终端设备在预设时段内仅接收到来自一个网络设备(为便于区分和说明,记作第三网络设备)的下行控制信息。In the embodiment of the present application, if the terminal device receives a downlink control information within a preset time period, the terminal device may be considered to receive only one network device within a preset time period (for convenience of distinction and description, the first Downlink control information of the three network devices.
即,步骤210可具体包括:That is, step 210 may specifically include:
步骤2103,终端设备在预设时段内接收到来自第三网络设备的下行控制信息。Step 2103: The terminal device receives downlink control information from the third network device within a preset time period.
也就是说,该终端设备可能会在下一时段仅与这个网络设备传输数据,因此该终端设备可能仅接收到来自第三网络设备的CSI-RS。对于该第三网络设备而言,其他网络设备的信号都被认为是噪声信号。因此终端设备可针对该第三网络设备进行CSI测量得到待反馈的CSI,该CSI可以是仅基于一个下行控制信息中携带的测量信息测量得到。That is to say, the terminal device may only transmit data with this network device in the next time period, so the terminal device may only receive the CSI-RS from the third network device. For the third network device, the signals of other network devices are considered to be noise signals. Therefore, the terminal device may perform CSI measurement on the third network device to obtain CSI to be fed back, and the CSI may be measured based on measurement information carried in only one downlink control information.
在本申请中,为便于区分,可以将基于一个下行控制信息中携带的测量信息的CSI测量称为基于单站点的CSI测量。基于单站点的CSI测量可理解为CSI的另一种测量类型。In the present application, for convenience of distinction, CSI measurement based on measurement information carried in one downlink control information may be referred to as single-site based CSI measurement. Single site based CSI measurements can be understood as another type of measurement of CSI.
需要说明的是,上述第三网络设备仅为便于与上文中的第一网络设备和第二网络设备区分而命名,而不应对本申请构成任何限定。第三网络设备与第一网络设备、第二网络设备并无关联。第三网络设备可以是无线通信***中任意一个向终端设备发送了下行控制信息的网络设备。It should be noted that the foregoing third network device is named only for facilitating the distinction between the first network device and the second network device in the above, and should not be construed as limiting the application. The third network device is not associated with the first network device and the second network device. The third network device may be any one of the wireless communication systems that transmits downlink control information to the terminal device.
举例来说,在图1示出的无线通信***100中,若终端设备在预设时段内仅接收到来自网络设备#1的下行控制信息,则该网络设备#1可以为第三网络设备的一个例子。若网络设备#3在某一时段向终端设备发送CSI-RS,也就是说,网络设备#3可能会在下一时段与终端设备传输数据,因此,终端设备可针对网络设备#3进行CSI测量。For example, in the wireless communication system 100 shown in FIG. 1, if the terminal device receives only downlink control information from the network device #1 within a preset time period, the network device #1 may be the third network device. one example. If the network device #3 transmits the CSI-RS to the terminal device at a certain time period, that is, the network device #3 may transmit data with the terminal device in the next time period, the terminal device may perform CSI measurement for the network device #3.
应理解,以上仅为便于理解和说明,结合图1中的网络设备对步骤2201和步骤2202做了详细描述,但这不应对本申请构成任何限定。例如,终端设备在预设时段内还可能接收到来自更多或更少的网络设备的下行控制信息。无论终端设备在预设时段内接收到的下行控制信息来自哪个网络设备,终端设备均可以根据上述步骤2201或步骤2202中所描述的方法进行CSI测量。It should be understood that the above is only a detailed description of step 2201 and step 2202 in conjunction with the network device in FIG. 1 for ease of understanding and explanation, but this should not constitute any limitation to the present application. For example, the terminal device may also receive downlink control information from more or less network devices within a preset time period. Regardless of which network device the downlink control information received by the terminal device is received within the preset time period, the terminal device may perform CSI measurement according to the method described in step 2201 or step 2202 above.
基于上述技术方案,终端设备可以根据预设时段内接收到的下行控制信号的数量,采用不同的测量类型进行CSI测量。因此,不需要网络设备额外的信令开销来指示各种干扰测量假设条件,而是由终端设备自主地确定测量类型,可以大大节省信令开销。并且,由此确定的测量类型能够得到更加准确的CSI反馈给网络设备,从而有利于网络设备确定合理的传输方案和调度策略,也就是提高了数据传输的可靠性,提高了***性能。Based on the foregoing technical solution, the terminal device may perform CSI measurement by using different measurement types according to the number of downlink control signals received within a preset time period. Therefore, the network equipment does not need additional signaling overhead to indicate various interference measurement assumptions, but the terminal device autonomously determines the measurement type, which can greatly save signaling overhead. Moreover, the measurement type thus determined can obtain more accurate CSI feedback to the network device, thereby facilitating the network device to determine a reasonable transmission scheme and scheduling strategy, that is, improving the reliability of data transmission and improving system performance.
可选地,该方法200还包括:终端设备根据接收到的下行控制信息的信号强度和预设 门限,确定在预设时段内接收到的下行控制信息的数量。Optionally, the method 200 further includes: determining, by the terminal device, the quantity of downlink control information received in the preset time period according to the received signal strength of the downlink control information and the preset threshold.
由于终端设备在接收下行控制信息的时候,有可能误接收到发送给其他终端设备的下行控制信息,并将误接收到的下行控制信息错当成发送给自身的下行控制信息,计入预设时段内接收到的下行控制信号的数量中,由此可能会造成终端设备对测量类型的选择出错。在这种情况下,终端设备可能并不会接到与该下行控制信息对应的网络设备发送的CSI-RS。也就是说,该终端设备误接收到的下行控制信息并不应该计入预设时段内接收到的下行控制信号的数量中。为避免终端设备选择错误的测量类型进行CSI测量,终端设备可根据接收到的下行控制信息的信号强度和预设门限,确定在预设时段内接收到的下行控制信号的数量。When the terminal device receives the downlink control information, it may incorrectly receive the downlink control information sent to other terminal devices, and mistype the received downlink control information as the downlink control information sent to itself, and counts into the preset time period. Among the number of downlink control signals received, this may cause the terminal device to make an error in the selection of the measurement type. In this case, the terminal device may not receive the CSI-RS transmitted by the network device corresponding to the downlink control information. That is to say, the downlink control information that the terminal device incorrectly receives should not be included in the number of downlink control signals received within the preset time period. To prevent the terminal device from selecting the wrong measurement type for CSI measurement, the terminal device may determine the number of downlink control signals received within the preset time period according to the received signal strength of the downlink control information and the preset threshold.
具体地,当终端设备在预设时段内接收到的某一个下行控制信息的信号强度大于或等于预设门限时,则可将这个接收到的下行控制信息计入预设时段内接收到的下行控制信息的数量中;当终端设备在预设时段内接收到的某一个下行控制信息的信号强度小于预设门限时,则可将这个接收到的下行控制信号忽略,而不计入预设时段内接收到的下行控制信息的数量中。Specifically, when the signal strength of the downlink control information received by the terminal device in the preset time period is greater than or equal to the preset threshold, the received downlink control information may be included in the downlink received within the preset time period. In the quantity of control information; when the signal strength of a certain downlink control information received by the terminal device in the preset time period is less than the preset threshold, the received downlink control signal may be ignored, and is not counted in the preset time period. The number of downlink control information received within.
其中,预设门限可以是网络设备确定后通过信令通知终端设备的,也可以是预先定义的,例如,协议定义,本申请对于预设门限的确定方法和取值均不做限定。The preset threshold may be determined by the network device after the network device determines the signaling, or may be predefined, for example, a protocol definition. The method for determining the preset threshold and the value are not limited.
应理解,终端设备根据下行控制信号的信号强度和预设门限确定预设时段内接收到的下行控制信息的数量仅为一种可能的实现方式,而不应对本申请构成任何限定。终端设备也可以基于其他的方法来确定预设时段内接收到的下行控制信息的数量。It should be understood that determining, by the terminal device, the number of downlink control information received within the preset time period according to the signal strength and the preset threshold of the downlink control signal is only one possible implementation manner, and should not be construed as limiting the present application. The terminal device may also determine the number of downlink control information received within the preset time period based on other methods.
可选地,该方法200还包括:终端设备接收第一指示信息,该第一指示信息指示是否基于至少两个下行控制信息中携带的测量信息进行CSI测量。Optionally, the method 200 further includes: the terminal device receiving the first indication information, where the first indication information indicates whether to perform CSI measurement based on the measurement information carried in the at least two downlink control information.
换句话说,该第一指示信息指示是否基于一个下行控制信息中携带的测量信息进行CSI测量,或者说,该第一指示信息指示基于一个下行控制信息中携带的测量信息进行CSI测量还是基于至少两个下行控制信息中携带的测量信息进行CSI测量。In other words, the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information, or the first indication information indicates whether the CSI measurement is performed based on the measurement information carried in the downlink control information or based on at least The measurement information carried in the two downlink control information is subjected to CSI measurement.
或者说,该第一指示信息可用于指示测量类型。测量类型可包括基于单站点的CSI测量或基于多站点的CSI测量,其中,在基于单站点的CSI测量中,CSI测量基于一个下行控制信息中携带的测量信息进行,基于多站点的CSI测量中,每一次CSI测量基于多个下行控制信息中携带的测量信息进行。Alternatively, the first indication information can be used to indicate the type of measurement. The measurement type may include single site based CSI measurement or multi-site based CSI measurement, wherein in single site based CSI measurement, CSI measurement is performed based on measurement information carried in one downlink control information, based on multi-site CSI measurement Each CSI measurement is performed based on measurement information carried in multiple downlink control information.
在本申请实施例中,该第一指示信息可以由与终端设备具有通信连接的任意一个网络设备发送,例如,与该终端设备建立了RRC连接的网络设备发送。可选地,该第一指示信息可通过RRC消息、媒体接入控制(media access control,MAC)控制元素(control element,CE)或者下行控制信息中的一个或多个信令承载。终端设备可以根据该第一指示信息所指示的测量类型,进行相应的CSI测量。In this embodiment, the first indication information may be sent by any one of the network devices that have a communication connection with the terminal device, for example, a network device that has established an RRC connection with the terminal device. Optionally, the first indication information may be carried by one or more signaling messages in an RRC message, a media access control (MAC) control element (CE), or downlink control information. The terminal device may perform corresponding CSI measurement according to the measurement type indicated by the first indication information.
在一种可能的设计中,该第一指示信息可以为一个指示比特。例如,网络设备和终端设备可预先约定,当该指示比特置“1”时,则指示测量类型为基于至少两个下行控制信息中携带的测量信息的CSI测量,或者说,基于多站点的CSI测量;当该指示比特置“0”时,则指示测量类型为基于一个下行控制信息中携带的测量信息的CSI测量,或者说,基于单站点的CSI测量。应理解,这里仅为便于理解,示意性地给出了第一指示信息的一种可能的形式,但这不应对本申请构成任何限定,该第一指示信息也可以为其他形式来指示测量 类型,例如,通过同一信令中不同的字段来指示,等等。In a possible design, the first indication information may be an indication bit. For example, the network device and the terminal device may pre-arrange, when the indication bit is set to “1”, indicate that the measurement type is CSI measurement based on measurement information carried in at least two downlink control information, or, based on multi-site CSI. Measurement; when the indication bit is set to "0", the measurement type is indicated as CSI measurement based on measurement information carried in one downlink control information, or based on single site CSI measurement. It should be understood that one possible form of the first indication information is schematically given here for ease of understanding, but this should not constitute any limitation to the application, and the first indication information may also be in other forms to indicate the measurement type. , for example, indicated by different fields in the same signaling, and so on.
在本申请实施例中,终端设备可结合预设时段内接收到的下行控制信息的数量以及第一指示信息,选择一种测量类型进行CSI测量。具体地,若终端设备在预设时段内接收到多个下行控制信息,且第一指示信息指示的测量类型为基于至少两个下行控制信息中携带的测量信息的CSI测量,则该终端设备可根据接收到的多个下行控制信息中携带的测量信息进行CSI测量;若终端设备在预设时段内接收到一个下行控制信息,且第一指示信息指示的测量类型为基于一个下行控制信息中携带的测量信息的CSI测量,则该终端设备可根据接收到的一个下行控制信息中携带的测量信息进行基于CSI测量;若终端设备在预设时段内接收到多个下行控制信息,而第一指示信息指示的测量类型为基于一个下行控制信息中携带的测量信息进行的CSI测量,则终端设备可以基于接收到的多个下行控制信息中的每一个下行控制信息中的测量信息分别进行CSI测量,也就是针对每个下行控制信息分别进行CSI测量;若终端设备在预设时段内接收到一个下行控制信息,而第一指示信息指示的测量类型为基于至少两个下行控制信息中携带的测量信息的CSI测量,则该终端设备可以结合之前接收到的另一个或多个下行控制信息进行CSI测量,或者,该终端设备可以等待后续接收到的另一个或多个下行控制信息进行CSI测量。In the embodiment of the present application, the terminal device may select a measurement type to perform CSI measurement according to the number of downlink control information received in the preset time period and the first indication information. Specifically, if the terminal device receives multiple downlink control information within a preset time period, and the measurement type indicated by the first indication information is CSI measurement based on the measurement information carried in the at least two downlink control information, the terminal device may The CSI measurement is performed according to the measurement information carried in the received multiple downlink control information; if the terminal device receives a downlink control information within a preset time period, and the measurement type indicated by the first indication information is carried in a downlink control information. The CSI measurement of the measurement information, the terminal device may perform the CSI measurement according to the measurement information carried in the received downlink control information; if the terminal device receives the multiple downlink control information within the preset time period, the first indication The measurement type indicated by the information is CSI measurement based on the measurement information carried in the downlink control information, and the terminal device may separately perform CSI measurement based on the measurement information in each of the received downlink control information. That is, CSI measurement is performed separately for each downlink control information; Receiving a downlink control information in a preset time period, and the measurement type indicated by the first indication information is a CSI measurement based on the measurement information carried in the at least two downlink control information, the terminal device may combine the previously received another The CSI measurement is performed by one or more downlink control information, or the terminal device may wait for another downlink control information received subsequently for CSI measurement.
在一种可能的实现方式中,终端设备可根据预先确定的时长阈值来确定在预设时段之前或之后接收到的下行控制信息。具体来说,假设终端设备在预设时段#1仅接收到一个下行控制信息,但网络设备所指示的测量类型为基于至少两个下行控制信息中携带的测量信息的CSI测量,则终端设备可在预设时段#1的起始时刻向前延伸一个时长阈值,结合该时长阈值所覆盖的时段内接收到的一个或多个下行控制信息,进行CSI测量;或者,终端设备可在预设时段#1的结束时刻向后延伸一个时长阈值,结合该时长阈值所覆盖的时段内接收到的一个或多个下行控制信息,进行CSI测量。In a possible implementation, the terminal device may determine downlink control information received before or after the preset time period according to a predetermined duration threshold. Specifically, it is assumed that the terminal device receives only one downlink control information in the preset time period #1, but the measurement type indicated by the network device is CSI measurement based on the measurement information carried in the at least two downlink control information, the terminal device may Extending a time duration threshold at a starting time of the preset time period #1, and performing one or more downlink control information received in the time period covered by the time length threshold to perform CSI measurement; or, the terminal device may be in a preset time period The end time of #1 is extended backward by a duration threshold, and the CSI measurement is performed in combination with one or more downlink control information received during the period covered by the duration threshold.
如果终端设备在向前延伸或向后延伸的时长阈值所覆盖的时段内都未接收到下行控制信息,则可以基于一个下行控制信息中携带的测量信息进行CSI测量,或者,不做测量。If the terminal device does not receive the downlink control information in the period covered by the duration threshold that extends forward or backward, the CSI measurement may be performed based on the measurement information carried in the downlink control information, or may not be measured.
应理解,上述时长阈值可以是由网络设备预先通知终端设备的,也可以是终端设备自行确定的,还可以是预先定义的,例如协议定义,本申请对此不做限定。It should be understood that the foregoing duration threshold may be previously notified by the network device to the terminal device, or may be determined by the terminal device, or may be predefined, for example, a protocol definition, which is not limited in this application.
因此,终端设备可以根据网络设备所指示的测量类型进行CSI测量,使得网络设备的自主性得以增强,网络设备可根据当前的需求指示终端设备进行相应的CSI测量,以便于网络设备确定合理的传输方案和调度策略,有利于提高数据传输的可靠性。Therefore, the terminal device can perform CSI measurement according to the measurement type indicated by the network device, so that the autonomy of the network device is enhanced, and the network device can instruct the terminal device to perform corresponding CSI measurement according to the current requirement, so that the network device determines a reasonable transmission. The scheme and scheduling strategy are conducive to improving the reliability of data transmission.
可选地,该方法200还包括:Optionally, the method 200 further includes:
步骤230,该终端设备发送CSI,该CSI是基于一个或至少两个下行控制信息中携带的测量信息测量得到。Step 230: The terminal device sends CSI, and the CSI is measured based on measurement information carried in one or at least two downlink control information.
具体地,该终端设备可通过CSI报告来承载CSI。终端设备具体可通过以下提供的实现方式中的任意一种来向网络设备反馈CSI,为便于区分和说明,将不同实现方式中所涉及CSI报告分别成为第一CSI报告和第二CSI报告。应理解,第一CSI报告和第二CSI报告仅为便于不同的反馈方式而命名,而不应对CSI发送的先后顺序、CSI的数量等构成任何限定。Specifically, the terminal device can carry the CSI through the CSI report. The terminal device may specifically feed back the CSI to the network device by using any one of the implementation manners provided below. To facilitate the distinguishing and description, the CSI reports involved in the different implementation manners are respectively the first CSI report and the second CSI report. It should be understood that the first CSI report and the second CSI report are named only for facilitating different feedback modes, and should not constitute any limitation on the order of CSI transmission, the number of CSIs, and the like.
实现方式一:Implementation one:
在一种可能的实现方式中,CSI报告(例如记作第一CSI报告)可包括第一字段,该 第一字段可用于承载一个或多个CSI。该第一字段中承载的一个或多个CSI中,每个CSI可以是基于一个下行控制信息中携带的测量信息测量得到,也就是基于单站点的CSI测量得到的CSI;也可以是基于至少两个下行控制信息中携带的测量信息测量得到,也就是基于多站点的CSI测量得到的CSI。In one possible implementation, the CSI report (e.g., referred to as the first CSI report) can include a first field that can be used to carry one or more CSIs. In the one or more CSIs carried in the first field, each CSI may be measured based on measurement information carried in one downlink control information, that is, CSI based on single site CSI measurement; or may be based on at least two The measurement information carried in the downlink control information is measured, that is, the CSI obtained based on the CSI measurement of the multi-site.
在这种实现方式中,无论CSI是采用哪一种测量类型测量得到,都可以承载在同一个字段中。由于该CSI测量有可能是基于一个下行控制信息中携带的测量信息的CSI测量,也有可能是基于至少两个下行控制信息你中携带的测量信息的CSI测量,但网络设备可能并不知道接收到的CSI是采用哪一种测量类型测量得到,因此,终端设备可以在反馈CSI的同时指示CSI测量的测量类型。具体地,终端设备可通过显式指示或隐式指示的方式来向网络设备指示第一字段中承载的CSI的测量类型。In this implementation, regardless of which measurement type CSI is used for measurement, it can be carried in the same field. Since the CSI measurement may be based on CSI measurement of measurement information carried in one downlink control information, it may also be CSI measurement based on measurement information carried by at least two downlink control information, but the network device may not know that the CSI measurement is received. The CSI is measured by which measurement type is adopted, and therefore, the terminal device can indicate the measurement type of the CSI measurement while feeding back the CSI. Specifically, the terminal device may indicate, by means of an explicit indication or an implicit indication, the measurement type of the CSI carried in the first field to the network device.
A、显式指示:A, explicit instructions:
可选地,该第一CSI报告还可包括第二字段,该第二字段用于指示第一字段中承载的CSI所基于的测量类型。例如,第二字段可以为一个比特的指示字段,当该指示字段置“1”时,可指示第一字段承载的CSI是基于至少两个下行控制信息中携带的测量信息测量得到;当该指示字段置“0”时,可指示第一字段承载的CSI是基于一个下行控制信息中携带的测量信息测量得到。Optionally, the first CSI report may further include a second field, where the second field is used to indicate a measurement type on which the CSI carried in the first field is based. For example, the second field may be an indication field of one bit. When the indication field is set to “1”, the CSI carried by the first field may be measured based on measurement information carried in the at least two downlink control information; When the field is set to "0", the CSI carried by the first field is measured based on the measurement information carried in the downlink control information.
在这种实现方式中,终端设备可以将两种测量类型得到CSI都承载在同一个字段中,并通过与网络设备预先约定好的一个指示比特来指示测量类型,网络设备在接收到该第一CSI时,便可以根据第二字段中所指示的测量类型和第一字段中承载的CSI确定合理的传输方案和调度策略。In this implementation manner, the terminal device may carry the CSIs of the two measurement types in the same field, and indicate the measurement type by using an indication bit pre-agreed with the network device, and the network device receives the first At the time of CSI, a reasonable transmission scheme and scheduling policy can be determined according to the measurement type indicated in the second field and the CSI carried in the first field.
再进一步地,该终端设备在反馈CSI时,可以根据预先接收到的信息确定反馈CSI的资源,并在该反馈CSI的资源上发送CSI。例如,终端设备可以根据在步骤210中接收到的下行控制信息所指示的CSI reporting setting确定反馈CSI的资源。在上文中已经说明,每个下行控制信息可以携带一个CSI reporting setting的指示信息,或者,可以仅通过一个下行控制信息携带多个CSI reporting setting的指示信息,或者,也可以仅通过一个下行控制信息携带一个CSI reporting setting的指示信息。Further, when the CSI is fed back, the terminal device may determine a resource for feeding back CSI according to the information received in advance, and send the CSI on the resource of the feedback CSI. For example, the terminal device may determine the resource for feeding back the CSI according to the CSI reporting setting indicated by the downlink control information received in step 210. As described above, each downlink control information may carry the indication information of one CSI reporting setting, or may carry the indication information of multiple CSI reporting settings through only one downlink control information, or may only pass one downlink control information. Carry a CSI reporting setting.
若每个下行控制信息携带一个CSI reporting setting的指示信息,每个下行控制信息可指示一个反馈CSI的资源,终端设备可基于每个下行控制信息所指示的反馈CSI的资源反馈相对应的CSI,例如,针对第n个下行控制信息测量得到的CSI通过该第n个下行控制信息中指示的CSI反馈的资源来上报。If each downlink control information carries the indication information of the CSI reporting setting, each downlink control information may indicate a resource that feeds back the CSI, and the terminal device may feed back the corresponding CSI based on the resource of the feedback CSI indicated by each downlink control information. For example, the CSI measured for the nth downlink control information is reported by the CSI feedback resource indicated in the nth downlink control information.
若仅通过一个下行控制信息携带多个CSI reporting setting的指示信息,则该下行控制信息可指示多个反馈CSI的资源,该多个反馈CSI的资源可以与多个CSI一一对应,终端设备可以在每个反馈CSI的资源上反馈相对应的CSI。If the downlink control information carries the indication information of the multiple CSI reporting settings, the downlink control information may be used to indicate the resources of the multiple feedback CSIs, and the resources of the multiple feedback CSIs may be corresponding to the multiple CSIs, and the terminal device may The corresponding CSI is fed back on the resources of each feedback CSI.
若仅通过一个下行控制信息携带一个CSI reporting setting的指示信息,则该下行控制信息可指示一个反馈CSI的资源,终端设备可以将每一次CSI测量得到的CSI均通过该下行控制信息所指示的反馈CSI的资源来上报。If the information about the CSI reporting setting is carried by the downlink control information, the downlink control information may indicate a resource that feeds back the CSI, and the terminal device may pass the CSI obtained by each CSI measurement through the feedback indicated by the downlink control information. CSI resources are reported.
换句话说,该终端设备可以向网络设备反馈CSI时,可以将针对某一网络设备测量得到的CSI反馈给该网络设备,例如,将针对第一网络设备测量得到的CSI反馈给该第一网络设备;终端设备也可以将针对一个或多个网络设备分别测量得到的CSI反馈给同一网络 设备,该网络设备可以是指示反馈CSI的资源的网络设备,并可通过该网络设备将CSI分别发送给各CSI对应的网络设备。例如,将针对第一网络设备和第二网络设备分别测量得到的CSI反馈给服务网络设备。In other words, when the terminal device can feed back the CSI to the network device, the CSI measured by the network device can be fed back to the network device, for example, the CSI measured for the first network device is fed back to the first network. The device may also feed back the CSI measured by the one or more network devices to the same network device, where the network device may be a network device indicating the resource for feeding back the CSI, and the CSI may be separately sent to the CSI through the network device. Network device corresponding to each CSI. For example, the CSI measured separately for the first network device and the second network device is fed back to the serving network device.
可选地,步骤230具体包括:Optionally, step 230 specifically includes:
终端设备发送多个第一CSI报告,该多个第一CSI报告中的每个第一CSI报告中的第一字段包括一个CSI,该CSI可以是基于至少两个下行控制信息中携带的测量信息测量得到,或者,也可以是基于一个下行控制信息中携带的测量信息测量得到。The terminal device sends a plurality of first CSI reports, where the first field in each of the first CSI reports includes a CSI, and the CSI may be based on measurement information carried in the at least two downlink control information. The measurement is obtained, or it may be measured based on measurement information carried in a downlink control information.
即,步骤230具体包括步骤2301、步骤2302以及步骤2303中的一个或多个步骤:That is, step 230 specifically includes one or more steps of step 2301, step 2302, and step 2303:
步骤2301,终端设备向第一网络设备发送第一CSI报告,该第一CSI报告中承载针对第一网络设备测量的CSI(为便于区分和说明,记作CSI#1);Step 2301, the terminal device sends a first CSI report to the first network device, where the first CSI report carries the CSI measured for the first network device (for convenience of distinction and description, it is recorded as CSI#1);
步骤2302,终端设备向第二网络设备发送第一CSI报告,该第一CSI报告中承载针对第二网络设备测量的CSI(为便于区分和说明,记作CSI#2)。Step 2302: The terminal device sends a first CSI report to the second network device, where the CSI (for CSC#2) is measured for the second network device.
或者,步骤230具体包括:Or, step 230 specifically includes:
步骤2303,终端设备向第三网络设备发送第一CSI报告,该该第一CSI报告中承载针对第三网络设备测量的CSI(为便于区分和说明,记作CSI#3)。Step 2303: The terminal device sends a first CSI report to the third network device, where the first CSI report carries the CSI measured for the third network device (referred to as CSI#3 for convenience of distinction and description).
其中,上述CSI(例如包括CSI#1、CSI#2和CSI#3)可以是基于至少两个下行控制信息中携带的测量信息测量得到,也可以是基于一个下行控制信息中携带的测量信息测量得到。The foregoing CSI (including, for example, CSI #1, CSI #2, and CSI #3) may be measured based on measurement information carried in at least two downlink control information, or may be measured based on measurement information carried in one downlink control information. get.
应理解,上文以及附图中仅为便于理解,以第一网络设备、第二网络设备和第三网络设备为例,示意性地示出了终端设备分别向第一网络设备、第二网络设备和第三网络设备发送CSI的步骤,但这不应对本申请构成任何限定,在实际的执行过程中,终端设备可执行步骤2301至步骤2303中的一个或多个步骤,也可执行除步骤2301至步骤2303之外的更多的步骤,例如,向更多的网络设备发送CSI。It should be understood that, in the above and in the drawings, for convenience of understanding, the first network device, the second network device, and the third network device are taken as an example, and the terminal device is schematically shown to the first network device and the second network, respectively. The step of transmitting the CSI by the device and the third network device, but this should not constitute any limitation to the application. In an actual execution process, the terminal device may perform one or more steps in steps 2301 to 2303, and may also perform the steps. More steps from 2301 to 2303, for example, sending CSI to more network devices.
还应理解,图中仅示例性地示出了在一种实现方式中终端设备向网络设备反馈CSI的具体步骤,但这不应对本申请构成任何限定,终端设备向网络设备反馈CSI的具体方法并不限于图中示出的步骤。It should also be understood that the specific steps of the terminal device feeding back the CSI to the network device in one implementation manner are exemplarily shown in the figure, but this should not constitute any limitation to the application, and the specific method for the terminal device to feed back the CSI to the network device It is not limited to the steps shown in the figures.
终端设备在发送多个第一CSI报告时,每个第一CSI报告中的第一字段可携带一个基于一个或多个下行控制信息测量得到的CSI。When the terminal device sends the multiple first CSI reports, the first field in each first CSI report may carry a CSI measured based on one or more downlink control information.
一种可能的情况是,终端设备在预设时段内接收到多个下行控制信息,网络设备并未指示测量类型,或者网络设备指示测量类型为基于至少两个下行控制信息中携带的测量信息的CSI测量,则该终端设备可以基于该多个下行控制信息中的至少两个下行控制信息中携带的测量信息进行CSI测量,并将与各网络设备对应的CSI上报给各网络设备。A possible situation is that the terminal device receives multiple downlink control information within a preset time period, the network device does not indicate the measurement type, or the network device indicates that the measurement type is based on the measurement information carried in the at least two downlink control information. For the CSI measurement, the terminal device may perform CSI measurement based on the measurement information carried in the at least two downlink control information of the multiple downlink control information, and report the CSI corresponding to each network device to each network device.
另一种可能的情况下,终端设备在预设时段内接收到多个下行控制信息,网络设备指示测量类型为基于一个下行控制信息中携带的测量信息的CSI测量,则该终端设备基于每个下行控制信息中携带的测量信息分别进行CSI测量,并将与各网络设备对应的CSI上报给各网络设备。In another possible case, the terminal device receives multiple downlink control information within a preset time period, and the network device indicates that the measurement type is CSI measurement based on the measurement information carried in one downlink control information, and the terminal device is based on each The CSI measurement is performed on the measurement information carried in the downlink control information, and the CSI corresponding to each network device is reported to each network device.
再一种可能的情况是,终端设备在预设时段内接收到多个下行控制信息,但终端设备可以仅针对其中的某一个下行控制信息所对应的网络设备进行CSI测量和反馈,该CSI测量可以是基于一个下行控制信息中携带的测量信息的CSI测量,也可以是基于至少两个 下行控制信息中携带的测量信息的CSI测量,测量得到的结果可上报每次测量所针对的网络设备。应理解,以上列举的可能仅为便于理解而给出的示意性说明,不应对本申请构成任何限定。A further possible situation is that the terminal device receives multiple downlink control information within a preset time period, but the terminal device may perform CSI measurement and feedback only for the network device corresponding to one of the downlink control information, the CSI measurement. The CSI measurement may be based on the measurement information carried in the downlink control information, or may be the CSI measurement based on the measurement information carried in the at least two downlink control information, and the measured result may be reported to the network device for each measurement. It is to be understood that the above list may be merely illustrative for ease of understanding and should not be construed as limiting.
或者,可选地,步骤230具体包括:Alternatively, optionally, step 230 specifically includes:
终端设备发送一个第一CSI报告,该第一CSI报告中的第一字段中可包括至少一个基于一个下行控制信息携带的测量信息测量得到的CSI,或,至少一个基于至少两个下行控制信息携带的测量信息测量得到的CSI。The terminal device sends a first CSI report, where the first field in the first CSI report may include at least one CSI measured based on measurement information carried by one downlink control information, or at least one is carried based on at least two downlink control information. The measured information is measured by the CSI obtained.
一种可能的情况是,终端设备在预设时段内接收到一个下行控制信息,网络设备并未指示测量类型,或者网络设备指示测量类型为基于一个下行控制信息中携带的测量信息的CSI测量,则该终端设备基于该一个下行控制信息中携带的测量信息进行基于CSI测量。此情况下,终端设备可以将测量得到的CSI反馈给该网络设备,或者反馈给同一网络设备,例如,服务网络设备。A possible situation is that the terminal device receives a downlink control information within a preset time period, the network device does not indicate the measurement type, or the network device indicates that the measurement type is a CSI measurement based on the measurement information carried in one downlink control information, The terminal device performs CSI-based measurement based on the measurement information carried in the one downlink control information. In this case, the terminal device may feed back the measured CSI to the network device or feed back to the same network device, for example, the serving network device.
另一种可能的情况是,终端设备在预设时段内接收到多个下行控制信息,网络设备并未指示测量类型,或者网络设备指示测量类型为基于至少两个下行控制信息中携带的测量信息的CSI测量,则该终端设备基于预设时段内接收到的至少两个下行控制信息中携带的测量信息进行基于CSI测量;再一种可能的情况是,终端设备在预设时段内接收到多个下行控制信息,网络设备指示测量类型为基于一个下行控制信息中携带的测量信息的CSI测量,则该终端设备基于每个下行控制信息中携带的测量信息分别进行CSI测量。这两种情况下,终端设备在预设时段内接收到多个下行控制信息时,可以基于该预设时段内接收到的至少两个下行控制信息中携带的测量信息进行基于单站点的CSI测量或者进行基于多站点的CSI测量,测量得到的CSI可反馈给同一网络设备,例如,服务网络设备。Another possible situation is that the terminal device receives multiple downlink control information in a preset time period, the network device does not indicate the measurement type, or the network device indicates that the measurement type is based on the measurement information carried in the at least two downlink control information. The CSI measurement, the terminal device performs CSI-based measurement based on the measurement information carried in the at least two downlink control information received in the preset time period; and another possibility is that the terminal device receives more than the preset time period. The downlink control information, the network device indicates that the measurement type is CSI measurement based on the measurement information carried in one downlink control information, and the terminal device separately performs CSI measurement based on the measurement information carried in each downlink control information. In the two cases, when the terminal device receives the multiple downlink control information in the preset time period, the terminal device may perform the CSI measurement based on the single site based on the measurement information carried in the at least two downlink control information received in the preset time period. Or performing multi-site based CSI measurement, the measured CSI can be fed back to the same network device, for example, a service network device.
举例来说,假设终端设备分别针对第一网络设备和第二网络设备进行基于多站点的CSI测量,得到针对第一网络设备的CSI#1和针对第二网络设备的CSI#2。终端设备可以将CSI#1和CSI#2都承载在一个第一CSI报告的第一字段中,并将该第一CSI报告发送给该终端设备的服务网络设备。或者,终端设备可以将CSI#1承载在发送给第一网络设备的第一CSI报告中,将CSI#2承载在发送给第二网络设备的第一CSI报告中。For example, assume that the terminal device performs multi-site based CSI measurement for the first network device and the second network device, respectively, obtaining CSI #1 for the first network device and CSI #2 for the second network device. The terminal device may carry both CSI #1 and CSI #2 in a first field of a first CSI report, and send the first CSI report to a serving network device of the terminal device. Alternatively, the terminal device may carry the CSI #1 in the first CSI report sent to the first network device, and carry the CSI #2 in the first CSI report sent to the second network device.
假设终端设备仅针对第三网络设备进行基于单站点的CSI测量,得到针对第三网络设备的CSI#3。终端设备可以将CSI#3承载在第一CSI报告的第一字段中,并将该第一CSI报告发送给该第三网络设备,或者,发送给服务网络设备。Assuming that the terminal device performs single-site based CSI measurement only for the third network device, CSI #3 for the third network device is obtained. The terminal device may carry the CSI #3 in the first field of the first CSI report, and send the first CSI report to the third network device, or to the serving network device.
应理解,上文仅为便于理解列举了几种可能的情况,但这不应对本申请构成任何限定。It should be understood that the above list of several possible scenarios is merely for ease of understanding, but this should not be construed as limiting the application.
B、隐式指示:B. Implicit instructions:
该第一CSI报告中的第一字段可用于承载基于至少两个下行控制信息中携带的测量信息测量得到的CSI,也就是基于多站点的CSI测量得到的CSI,或者,该第一字段可用于承载预定义值;该预定义值用于隐式指示该终端设备不是基于至少两个下行控制信息中携带的测量信息进行CSI测量的。The first field in the first CSI report may be used to carry CSI measured based on measurement information carried in at least two downlink control information, that is, CSI based on multi-site CSI measurement, or the first field may be used for Carrying a predefined value; the predefined value is used to implicitly indicate that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
在这种实现方式中,终端设备可以仅上报基于多站点的CSI测量得到的CSI,在基于单站点进行CSI测量时,可通过与网络设备预先约定好的预定义值来隐式指示终端设备测量得到的CSI不是基于多站点的CSI测量得到,也就是不上报基于单站点的CSI测量得到的CSI。In this implementation, the terminal device may only report the CSI measured by the multi-site CSI measurement, and when the CSI measurement is performed based on the single site, the terminal device may be implicitly indicated by the predefined value pre-defined with the network device. The resulting CSI is not based on multi-site CSI measurements, ie, CSI based on single-site CSI measurements is not reported.
再进一步地,该第一字段中承载的CSI的数量可以为一个或多个,本申请对此不做限定。终端设备在向网络设备反馈CSI时,可以将针对某一网络设备测量得到的CSI反馈给该网络设备,例如,将针对第一网络设备测量得到的CSI反馈给该第一网络设备;终端设备也可以将针对一个或多个网络设备分别测量得到的CSI反馈给同一网络设备,例如,将针对第一网络设备和第二网络设备分别测量得到的CSI反馈给服务网络设备。Further, the number of CSIs carried in the first field may be one or more, which is not limited in this application. When the terminal device feeds back the CSI to the network device, the CSI measured by the network device may be fed back to the network device, for example, the CSI measured by the first network device is fed back to the first network device; The CSIs respectively measured for one or more network devices may be fed back to the same network device, for example, the CSIs respectively measured for the first network device and the second network device are fed back to the serving network device.
可选地,步骤230具体包括:Optionally, step 230 specifically includes:
终端设备发送一个第一CSI报告,该第一CSI报告包括第一字段,该第一字段包括至少一个基于至少两个下行控制信息测量得到的CSI,或预定义值;该预定义值隐式指示终端设备未基于至少两个下行控制信息中携带的测量进行CSI测量。换句话说,若第一字段中承载预定义值,则说明终端设备有可能是基于一个下行控制信息中携带的测量信息进行了基于单站点的CSI测量。此情况下,终端设备可以不上报基于单站点的CSI测量得到的CSI。The terminal device sends a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on the at least two downlink control information, or a predefined value; the predefined value implicitly indicates The terminal device does not perform CSI measurement based on the measurements carried in the at least two downlink control information. In other words, if the first field carries a predefined value, it indicates that the terminal device may perform single-site based CSI measurement based on the measurement information carried in one downlink control information. In this case, the terminal device may not report the CSI measured based on the single station CSI.
可选地,步骤230具体包括:Optionally, step 230 specifically includes:
终端设备发送多个第一CSI报告,该多个第一CSI报告中的每个第一CSI报告包括第一字段,该第一字段中包括一个基于至少两个下行控制信息携带的测量信息测量得到的CSI,或预定义值;该预定义值隐式指示终端设备未基于至少两个下行控制信息中携带的测量进行CSI测量。The terminal device sends a plurality of first CSI reports, where each of the first CSI reports includes a first field, where the first field includes a measurement information that is carried based on the at least two downlink control information. CSI, or a predefined value; the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurements carried in the at least two downlink control information.
在隐式指示的方式中,终端设备向网络设备反馈CSI的具体过程与显示指示的方式中终端设备向网络设备反馈CSI的具体过程相似,上文中已经结合不同的情况对该具体过程做了详细说明,为了简洁,这里不再赘述。In the implicit indication mode, the specific process of the terminal device feeding back the CSI to the network device is similar to the specific process of the terminal device feeding back the CSI to the network device in the manner of displaying the indication. The specific process has been detailed in the above. For the sake of brevity, it will not be repeated here.
实现方式二、Implementation method 2
在另一种可能的实现方式中,CSI报告(例如记作第二CSI报告)可以包括第三字段和第四字段,第三字段可用于承载基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,也就是基于单站点的CSI测量得到的CSI或基于多站点的CSI测量得到的CSI,第四字段仅用于承载基于一个下行控制信息携带的测量信息测量得到的CSI,也就是基于单站点的CSI测量得到的CSI。In another possible implementation, the CSI report (for example, recorded as the second CSI report) may include a third field and a fourth field, where the third field may be used to carry measurement information carried based on one or at least two downlink control information. The measured CSI, that is, CSI based on single-site CSI measurement or CSI based on multi-site CSI measurement, the fourth field is only used to carry CSI measured based on measurement information carried by one downlink control information, that is, CSI based on single site CSI measurements.
在上文中已经说明,终端设备在预设时段内接收到多个下行控制信息的情况下,终端设备可以基于预设时段内接收到的至少两个下行控制信息中携带的测量信息进行基于多站点的CSI测量,同时也可以基于每个下行控制信息中携带的测量信息进行基于单站点的CSI测量。在这种情况下,可以将基于多站点的CSI测量得到的CSI携带在第三字段,将基于单站点的CSI测量得到的CSI携带在第四字段。In the above, when the terminal device receives the plurality of downlink control information in the preset time period, the terminal device may perform the multi-site based on the measurement information carried in the at least two downlink control information received in the preset time period. The CSI measurement can also perform single-site based CSI measurement based on the measurement information carried in each downlink control information. In this case, the CSI measured based on the multi-site CSI may be carried in the third field, and the CSI obtained based on the CSI measurement of the single station may be carried in the fourth field.
其中,第四字段中仅用于承载基于一个下行控制信息中携带的测量信息进行CSI测量得到的CSI可以是由网络设备和终端设备预先约定的,网络设备在接收到第二CSI的时候,可默认该第四字段中的CSI为基于单站点的CSI测量得到。由于网络设备可能并不知道接收到的第二CSI报告中的第三字段承载的CSI是基于单站点的CSI测量得到的还是基于多站点的CSI测量得到的,因此,网络设备可以在反馈CSI的同时指示第三字段承载的CSI所基于的测量类型。具体地,终端设备可通过显式指示或隐式指示的方式来向网络设备指示第一字段中承载的CSI的测量类型。The CSI obtained by the CSI measurement based on the measurement information carried in the downlink control information in the fourth field may be pre-agreed by the network device and the terminal device, and the network device may receive the second CSI. By default, the CSI in the fourth field is obtained based on single site CSI measurements. Since the network device may not know whether the CSI carried in the third field in the received second CSI report is based on single-site CSI measurement or multi-site based CSI measurement, the network device may feedback CSI. At the same time, the measurement type on which the CSI carried by the third field is based is indicated. Specifically, the terminal device may indicate, by means of an explicit indication or an implicit indication, the measurement type of the CSI carried in the first field to the network device.
A、显式指示:A, explicit instructions:
可选地,该第二CSI报告还可包括第五字段,该第五字段用于指示第三字段中承载的CSI所基于的测量类型。例如,第五字段可以为一个比特的指示字段,当该指示字段置“1”时,可指示第三字段承载的CSI是基于至少两个下行控制信息中携带的测量信息测量得到,也就是基于多站点的CSI测量得到;当该指示字段置“0”时,可指示第三字段承载的CSI是基于一个下行控制信息中携带的测量信息测量得到,也就是基于单站点的CSI测量得到。Optionally, the second CSI report may further include a fifth field, where the fifth field is used to indicate a measurement type on which the CSI carried in the third field is based. For example, the fifth field may be an indication field of one bit. When the indication field is set to “1”, the CSI carried by the third field may be measured based on the measurement information carried in the at least two downlink control information, that is, based on The multi-site CSI measurement is obtained. When the indication field is set to “0”, the CSI carried by the third field may be measured based on the measurement information carried in the downlink control information, that is, based on the single-site CSI measurement.
在这种实现方式中,终端设备可以将基于两种测量类型测量得到的CSI都承载在第二CSI报告中,并通过与网络设备预先约定好的一个指示比特来指示测量类型,网络设备在接收到第二CSI报告时,便可以根据第五字段中指示的第三字段中的CSI所基于的测量类型和第三字段、第四字段中承载的CSI确定合理的传输方案和调度策略。In this implementation manner, the terminal device may carry the CSI measured based on the two measurement types in the second CSI report, and indicate the measurement type by using an indication bit pre-agreed with the network device, and the network device is receiving. When the second CSI report is received, a reasonable transmission scheme and a scheduling policy may be determined according to the measurement type based on the CSI in the third field indicated in the fifth field and the CSI carried in the third field and the fourth field.
B、隐式指示:B. Implicit instructions:
网络设备和终端设备可预先约定在第三字段中优先承载基于多个下行控制信息携带的测量信息的CSI,也就是说,若终端设备通过基于多站点的CSI测量得到CSI(为便于区分,例如记作CSI#A),则将该CSI#A优先承载在第三字段中,终端设备可同时通过基于单站点的CSI测量得到CSI(为便于区分和说明,例如记作CSI#B),则将该CSI#B承载在第四字段中。若终端设备并未进行基于多站点的CSI测量,而仅通过基于单站点的CSI测量得到了CSI(例如为CSI#B),则该CSI#B可同时承载在第三字段和第四字段中。网络设备在接收到该第二CSI报告时,可对比第三字段和第四字段中承载的信息,在第三字段和第四字段中承载的信息不同的情况下,认为该终端设备进行了基于多站点的CSI测量,第三字段中承载的CSI是基于多站点的CSI测量得到的;在第三字段和第四字段中承载的信息相同的情况下,认为该终端设备为进行基于多站点的CSI测量,仅通过基于单站点的CSI测量得到了CSI。The network device and the terminal device may pre-arrange the CSI that preferentially carries the measurement information carried based on the multiple downlink control information in the third field, that is, if the terminal device obtains the CSI through the multi-site based CSI measurement (for convenience, for example, Recorded as CSI#A), the CSI#A is preferentially carried in the third field, and the terminal device can simultaneously obtain the CSI through the single-site based CSI measurement (for convenience of distinction and description, for example, as CSI#B), The CSI #B is carried in the fourth field. If the terminal device does not perform multi-site based CSI measurement, and only obtains CSI (for example, CSI#B) by single-site based CSI measurement, the CSI#B may be simultaneously carried in the third field and the fourth field. . When receiving the second CSI report, the network device may compare the information carried in the third field and the fourth field, and if the information carried in the third field and the fourth field is different, the terminal device is considered to be based on Multi-site CSI measurement, the CSI carried in the third field is obtained based on multi-site CSI measurement; when the information carried in the third field and the fourth field is the same, the terminal device is considered to be based on multi-site For CSI measurements, CSI is obtained only by single site based CSI measurements.
在这种实现方式中,终端设备不需要额外的比特开销来指示第三字段中承载的CSI所基于的测量类型。In this implementation, the terminal device does not require additional bit overhead to indicate the type of measurement on which the CSI carried in the third field is based.
再进一步地,该第三字段和第四字段中承载的CSI的数量可以为一个或多个,本申请对此不做限定。该终端设备可以向网络设备反馈CSI时,可以将针对某一网络设备测量得到的CSI反馈给该网络设备,例如,将针对第一网络设备测量得到的CSI反馈给该第一网络设备;终端设备也可以将针对一个或多个网络设备分别测量得到的CSI反馈给同一网络设备,例如,将针对第一网络设备和第二网络设备分别测量得到的CSI反馈给服务网络设备。Further, the number of CSIs carried in the third field and the fourth field may be one or more, which is not limited in this application. When the terminal device can feed back the CSI to the network device, the CSI measured by the network device can be fed back to the network device, for example, the CSI measured by the first network device is fed back to the first network device; The CSI measured separately for the one or more network devices may also be fed back to the same network device, for example, the CSI measured separately for the first network device and the second network device is fed back to the serving network device.
可选地,步骤230具体包括:Optionally, step 230 specifically includes:
终端设备发送多个第二CSI报告,该多个第二CSI报告中的每个第二CSI报告中的第三字段用于承载至少一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,该多个第二CSI报告中的每个第二CSI报告中的第四字段用于承载至少一个仅基于一个下行控制信息携带的测量信息测量得到的CSI。The terminal device sends a plurality of second CSI reports, where a third field in each of the second CSI reports is used to carry at least one measurement information carried based on one or at least two downlink control information. The CSI, the fourth field in each second CSI report of the multiple second CSI reports is used to carry at least one CSI measured based on measurement information carried only by one downlink control information.
可选地,步骤230具体包括:Optionally, step 230 specifically includes:
终端设备发送一个第二CSI报告,该第二CSI报告中的第三字段用于承载多个基于一个或多个下行控制信息携带的测量信息测量得到的CSI,该第二CSI报告中的第四字段用于承载多个基于一个下行控制信息携带的测量信息测量得到的CSI。The terminal device sends a second CSI report, where the third field in the second CSI report is used to carry multiple CSIs measured based on measurement information carried by one or more downlink control information, and the fourth CSI report The field is used to carry multiple CSIs measured based on measurement information carried by one downlink control information.
应理解,终端设备向网络设备反馈CSI的具体过程与实现方式一中终端设备向网络设备反馈CSI的具体过程相似,上文中已经结合不同的情况对该具体过程做了详细说明,为了简洁,这里不再赘述。It should be understood that the specific process of the terminal device feeding back the CSI to the network device is similar to the specific process of the terminal device feeding back the CSI to the network device in the first manner. The specific process has been described in detail in the above, for the sake of brevity. No longer.
需要说明的是,在步骤230中,无论终端设备发送了一个还是多个CSI报告(例如第一CSI报告或第二CSI报告),对于每一个网络设备来说,可能仅接收到一个CSI报告。网络设备接收到的CSI报告中可携带一个或多个CSI。该一个或多个CSI可以是基于一个下行控制信息携带的测量信息测量得到的CSI,也可以是基于至少两个下行控制信息携带的测量信息测量得到的CSI。It should be noted that, in step 230, regardless of whether the terminal device sends one or more CSI reports (for example, the first CSI report or the second CSI report), only one CSI report may be received for each network device. One or more CSIs may be carried in the CSI report received by the network device. The one or more CSIs may be CSIs measured based on measurement information carried by one downlink control information, or may be CSIs measured based on measurement information carried by at least two downlink control information.
可选地,网络设备接收CSI,包括:Optionally, the network device receives the CSI, including:
网络设备接收第一CSI报告,第一CSI报告包括第一字段和第二字段,第一字段中包括至少一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,第二字段指示第一字段中的CSI所基于的测量类型。The network device receives the first CSI report, where the first CSI report includes a first field and a second field, where the first field includes at least one CSI measured according to measurement information carried in one or at least two downlink control information, and the second field Indicates the type of measurement on which the CSI in the first field is based.
可选地,网络设备接收CSI,包括:Optionally, the network device receives the CSI, including:
网络设备接收第一CSI报告,第一CSI报告包括第一字段,第一字段中包括至少一个基于至少两个下行控制信息中携带的测量信息测量得到的CSI,或预定义值;预定义值隐式指示终端设备未基于至少两个下行控制信息中携带的测量信息进行CSI测量。The network device receives the first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured according to the measurement information carried in the at least two downlink control information, or a predefined value; the predefined value is hidden The method indicates that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
可选地,网络设备接收CSI,包括:Optionally, the network device receives the CSI, including:
网络设备接收第二CSI报告,第二CSI报告包括第三字段和第四字段,第三字段用于承载至少一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,第四字段用于承载至少一个仅基于一个CSI-RS资源测量得到的CSI。The network device receives the second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one CSI measured according to measurement information carried by one or at least two downlink control information, and the fourth field It is used to carry at least one CSI measured based on only one CSI-RS resource.
可选地,第二CSI报告还包括第五字段,第五字段指示第三字段中承载的CSI所基于的测量类型。Optionally, the second CSI report further includes a fifth field, where the fifth field indicates a measurement type on which the CSI carried in the third field is based.
可选地,在步骤230之后,该方法200还包括:Optionally, after step 230, the method 200 further includes:
步骤240,网络设备确定接收到的CSI所基于的测量类型。In step 240, the network device determines the type of measurement on which the received CSI is based.
具体地,该网络设备可以为上文中列举的第一网络设备,则步骤240可包括:步骤2401,该第一网络设备可确定CSI#1所基于的测量类型;或者,该网络设备也可以为上文中列举的第二网络设备,则步骤240可包括:步骤2402,该第二网络设备可确定CSI#2所基于的测量类型;或者,该网络设备还可以为上文中列举的第三网络设备,步骤240可包括:步骤2403,该第三网络设备可确定CSI#3所基于的测量类型。Specifically, the network device may be the first network device listed above, and the step 240 may include: Step 2401, the first network device may determine a measurement type on which the CSI #1 is based; or the network device may also be In the second network device enumerated above, step 240 may include: step 2402, the second network device may determine the type of measurement on which the CSI #2 is based; or the network device may also be the third network device listed above Step 240 may include, in step 2403, the third network device may determine the type of measurement on which CSI #3 is based.
应理解,图中仅为便于理解分别示出了第一网络设备、第二网络设备和第三网络设备执行的步骤,但这不应对本申请构成任何限定,在实际的执行过程中,网络设备可仅执行步骤2401至步骤2403中的一个步骤。It should be understood that the steps performed by the first network device, the second network device, and the third network device are respectively shown in the figure for convenience of understanding, but this should not constitute any limitation to the present application. In actual implementation, the network device Only one of steps 2401 to 2403 may be performed.
根据上文描述可知,终端设备可以向一个或多个网络设备发送CSI。网络设备接收到的CSI所基于的测量类型可以包括:基于一个下行控制信息携带的测量信息的CSI测量,或,基于多个下行控制信息携带的测量信息的CSI测量。According to the above description, the terminal device can transmit CSI to one or more network devices. The measurement type on which the CSI received by the network device is based may include: CSI measurement based on measurement information carried by one downlink control information, or CSI measurement based on measurement information carried by multiple downlink control information.
在步骤230中可以看到,终端设备可通过第一CSI报告或第二CSI报告中的任意一种向终端设备发送CSI,网络设备在步骤230中接收到来自终端设备的CSI之后,可根据预先定义的指示字段(例如,第一CSI报告中的第二字段或第二CSI报告中的第五字段)或者预先定义的规则(例如,第一CSI报告中的预定义值或者第二CSI报告中的两个字段承 载的信息是否相同)来确定接收到的CSI所基于的测量类型。It can be seen in step 230 that the terminal device can send the CSI to the terminal device by using any one of the first CSI report or the second CSI report, and after receiving the CSI from the terminal device in step 230, the network device can a defined indicator field (eg, a second field in the first CSI report or a fifth field in the second CSI report) or a predefined rule (eg, a predefined value in the first CSI report or a second CSI report) The two fields carry the same information to determine the type of measurement on which the received CSI is based.
应理解,上文中已经结合不同的实现方式详细说明了终端设备如何指示CSI所基于的测量类型,网络设备确定CSI所基于的测量类型的方法与终端设备指示CSI所基于的测量类型的方法相似,为了简洁,这里不再赘述。It should be understood that the foregoing describes how the terminal device indicates the measurement type on which the CSI is based, in combination with different implementation manners. The method for the network device to determine the measurement type on which the CSI is based is similar to the method for the terminal device to indicate the measurement type on which the CSI is based, For the sake of brevity, it will not be repeated here.
还应理解,本申请中提出的终端设备指示CSI的测量类型的方法并不仅限于用在本申请所提供的场景中,当终端设备不是基于预设时段内接收到的下行控制信息的数量进行CSI测量的时候,也可以基于相似的方法来向网络设备指示所反馈的CSI基于的测量类型。It should also be understood that the method for indicating the measurement type of the CSI by the terminal device proposed in the present application is not limited to the scenario provided in the present application, and the CSI is performed when the terminal device is not based on the number of downlink control information received within the preset time period. At the time of measurement, the type of measurement on which the fed back CSI is based may also be indicated to the network device based on a similar method.
基于上述技术方案,网络设备可以根据准确地获知终端设备所反馈的CSI所基于的测量类型,从而可以根据终端设备反馈的CSI以及测量类型确定合理的传输方案和调度策略,有利于提高数据传输的可靠性。Based on the foregoing technical solution, the network device can accurately learn the measurement type on which the CSI is fed back by the terminal device, so that a reasonable transmission scheme and a scheduling policy can be determined according to the CSI and the measurement type fed back by the terminal device, which is beneficial to improving data transmission. reliability.
应理解,在本申请实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。It should be understood that, in the embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the embodiment of the present application. Form any limit.
还应理解,图2仅为便于理解,示意性地画出了终端设备和各网络设备执行的步骤,但这并不表示终端设备和网络设备会执行图中示出的每一个步骤,例如,终端设备可以仅步骤2201或步骤2202,或者也可以执行步骤2201和步骤2202。又例如,在步骤230中,终端设备可以向其他网络设备发送CSI,可不向图中示出的第一网络设备至第三网络设备发送CSI。因此,图2仅为示意性的流程图,而不应对本申请构成任何限定。It should also be understood that FIG. 2 is only for ease of understanding, and schematically illustrates steps performed by the terminal device and each network device, but this does not mean that the terminal device and the network device perform each step shown in the figure, for example, The terminal device may only have step 2201 or step 2202, or step 2201 and step 2202 may also be performed. For another example, in step 230, the terminal device may send CSI to other network devices, and may not send CSI to the first to third network devices shown in the figure. Therefore, FIG. 2 is merely a schematic flow chart and should not be construed as limiting the application.
还应理解,本申请中涉及的服务网络设备可以是指该通过无线空口协议为终端设备提供RRC连接、非接入层(Non-access Stratum,NAS)移动性管理和安全性输入等服务的网络设备。It should also be understood that the service network device involved in the present application may refer to a network that provides RRC connection, non-access stratum (NAS) mobility management, and security input services for the terminal device through the wireless air interface protocol. device.
还应理解,本申请中涉及的“保存”,可以是指的保存在一个或者多个存储器中。所述一个或者多个存储器,可以是单独的设置,也可以是集成在编码器或者译码器,处理器、或通信装置中。所述一个或者多个存储器,也可以是一部分单独设置,一部分集成在译码器、处理器、或通信装置中。存储器的类型可以是任意形式的存储介质,本申请并不对此限定。It should also be understood that "storing" as referred to in this application may refer to being stored in one or more memories. The one or more memories may be separate arrangements or integrated in an encoder or decoder, processor, or communication device. The one or more memories may also be partially provided separately, and some of them may be integrated in a decoder, a processor, or a communication device. The type of the memory may be any form of storage medium, which is not limited herein.
还应理解,上文中所述的“预先约定”可以通过在设备(例如,包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不做限定。It should also be understood that the "pre-agreed" described above may be implemented by pre-storing corresponding codes, tables, or other means that may be used to indicate relevant information in devices (eg, including terminal devices and network devices), The specific implementation manner is not limited.
以上结合图2详细说明了本申请实施例的通信方法。以下结合图3至图6详细说明本申请实施例的网络设备和终端设备。The communication method of the embodiment of the present application is described in detail above with reference to FIG. 2 . The network device and the terminal device in the embodiments of the present application are described in detail below with reference to FIG. 3 to FIG.
图3是本申请实施例提供的终端设备30的示意性框图。如图3所示,该终端设备30可包括:收发模块31和测量模块32。FIG. 3 is a schematic block diagram of a terminal device 30 provided by an embodiment of the present application. As shown in FIG. 3, the terminal device 30 can include a transceiver module 31 and a measurement module 32.
其中,收发模块31用于接收下行控制信息,所述下行控制信息中携带用于信道状态信息CSI测量的测量信息,所述测量信息至少包括信道状态信息参考信号CSI-RS资源配置的指示信息,所述CSI-RS资源配置的指示信息用于指示CSI-RS资源;The transceiver module 31 is configured to receive downlink control information, where the downlink control information carries measurement information used for channel state information CSI measurement, where the measurement information includes at least indication information of a channel state information reference signal CSI-RS resource configuration. The indication information of the CSI-RS resource configuration is used to indicate a CSI-RS resource;
若收发模块31在预设时段内接收到一个下行控制信息,测量模块32用于仅基于一个下行控制信息中携带的测量信息进行CSI测量;否则,测量模块32用于基于所述预设时段内接收到的至少两个下行控制信息携带的测量信息进行每一次CSI测量。If the transceiver module 31 receives a downlink control information within a preset time period, the measurement module 32 is configured to perform CSI measurement based on the measurement information carried in only one downlink control information; otherwise, the measurement module 32 is configured to use the preset time period. The received measurement information carried by the at least two downlink control information is subjected to each CSI measurement.
可选地,测量模块32具体用于,基于所述预设时段内接收到的N个下行控制信息携带的测量信息进行所述每一次CSI测量,所述N个下行控制信息中除第n个下行控制信息之外的下行控制信息所指示的CSI-RS资源为所述第n个下行控制信息所指示的CSI-RS资源的干扰测量资源,N≥n≥1,N≥2,且n、N均为整数。Optionally, the measurement module 32 is configured to perform, according to the measurement information carried by the N downlink control information received in the preset time period, the CSI measurement, where the nth downlink control information is except the nth The CSI-RS resource indicated by the downlink control information other than the downlink control information is an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information, where N≥n≥1, N≥2, and n, N is an integer.
可选地,所述测量信息还包括码本子集限制CSR的指示信息,所述码本子集限制的指示信息指示被限制的码本子集,所述码本子集包括码本中的部分或全部码字;Optionally, the measurement information further includes indication information of a codebook subset restriction CSR, where the indication information of the codebook subset restriction indicates a restricted codebook subset, where the codebook subset includes a codebook Part or all of the codeword;
测量模块32具体用于基于所述预设时段内接收到的至少两个下行控制信息指示的码本子集进行所述每一次CSI测量。The measuring module 32 is specifically configured to perform the CSI measurement according to the codebook subset indicated by the at least two downlink control information received in the preset time period.
可选地,收发模块31还用于接收第一指示信息,所述第一指示信息指示是否基于至少两个下行控制信息中携带的测量信息进行CSI测量。Optionally, the transceiver module 31 is further configured to receive first indication information, where the first indication information indicates whether to perform CSI measurement based on the measurement information carried in the at least two downlink control information.
可选地,若收发模块31在所述预设时段内接收到所述多个下行控制信息,所述多个下行控制信息中的每个下行控制信息中携带一个信道状态信息CSI报告配置的指示信息;或者Optionally, if the transceiver module 31 receives the multiple downlink control information in the preset time period, each downlink control information of the multiple downlink control information carries an indication of a channel state information CSI report configuration. Information; or
所述多个下行控制信息中的一个下行控制信息中携带多个CSI报告配置的指示信息;或者One of the plurality of downlink control information carries indication information of multiple CSI report configurations; or
所述多个下行控制信息中的一个下行控制信息中携带一个CSI报告配置的指示信息。One downlink control information of the multiple downlink control information carries indication information of a CSI report configuration.
可选地,收发模块31还用于发送CSI,所述CSI是基于一个或多个下行控制信息所携带的测量信息测量得到。Optionally, the transceiver module 31 is further configured to send CSI, where the CSI is measured based on measurement information carried by one or more downlink control information.
可选地,收发模块31具体用于:Optionally, the transceiver module 31 is specifically configured to:
发送一个第一CSI报告,所述第一CSI报告包括第一字段和第二字段,所述第一字段中包括:一个基于一个下行控制信息携带的测量信息测量得到的CSI,或,多个CSI,所述多个CSI中的每个CSI是基于至少两个下行控制信息携带的测量信息测量得到,所述第二字段指示所述第一字段中的CSI所基于的测量类型;或者Sending a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes: a CSI measured based on measurement information carried by one downlink control information, or multiple CSIs Each CSI of the plurality of CSIs is measured based on measurement information carried by at least two downlink control information, where the second field indicates a measurement type on which the CSI in the first field is based; or
发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段和第二字段,所述第一字段中包括一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。Transmitting a plurality of first CSI reports, each of the plurality of first CSI reports includes a first field and a second field, where the first field includes one based on one or at least two downlink control information The CSI of the carried measurement information is measured, and the second field indicates whether each CSI in the first field is measured based on measurement information carried by the at least two downlink control information.
可选地,收发模块31具体用于:Optionally, the transceiver module 31 is specifically configured to:
发送一个第一CSI报告,所述第一CSI报告包括第一字段,所述第一字段中包括多个CSI,或预定义值;所述多个CSI中的每个CSI是基于至少两个下行控制信息携带的测量信息测量得到,所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息携带的测量信息进行CSI测量;或者Sending a first CSI report, where the first CSI report includes a first field, where the first field includes multiple CSIs, or a predefined value; each CSI of the multiple CSIs is based on at least two downlinks The measurement information carried by the control information is measured, and the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurement information carried by the at least two downlink control information; or
发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段,所述第一字段中包括一个基于至少两个下行控制信息携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息携带的测量信息进行CSI测量。Sending a plurality of first CSI reports, each of the plurality of first CSI reports includes a first field, where the first field includes a measurement information that is carried based on the at least two downlink control information. CSI, or a predefined value; the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on measurement information carried by at least two downlink control information.
可选地,收发模块31具体用于:Optionally, the transceiver module 31 is specifically configured to:
发送一个第二CSI报告,所述第二CSI报告包括第三字段和第四字段,所述第三字段用于承载多个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第 四字段仅用于承载基于一个下行控制信息携带的测量信息测量得到的CSI;或者Sending a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry multiple CSIs measured based on measurement information carried by one or at least two downlink control information, The fourth field is only used to carry the CSI measured based on the measurement information carried by one downlink control information; or
发送多个第二CSI报告,所述多个第二CSI报告中的每个第二CSI报告包括第三字段和第四字段,所述第三字段用于承载一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第四字段仅用于承载一个基于一个下行控制信息携带的测量信息测量得到的CSI。Transmitting a plurality of second CSI reports, each of the plurality of second CSI reports including a third field and a fourth field, the third field being used to carry one based on one or at least two downlink controls The CSI obtained by measuring the measurement information carried by the information, the fourth field is only used to carry a CSI measured based on measurement information carried by one downlink control information.
可选地,所述第二CSI报告还包括第五字段,所述第五字段指示所述第三字段中承载的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。Optionally, the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried by the at least two downlink control information.
可选地,所述测量类型包括:基于至少两个下行控制信息携带的测量信息的CSI测量,或,基于一个下行控制信息携带的测量信息的CSI测量。Optionally, the measurement type includes: CSI measurement based on measurement information carried by at least two downlink control information, or CSI measurement based on measurement information carried by one downlink control information.
可选地,所述测量信息承载于CSI请求CSI request字段。Optionally, the measurement information is carried in a CSI request CSI request field.
应理解,终端设备30可以对应于根据本发明实施例的信道状态信息的测量方法200中的网络设备,该终端设备30可以包括用于执行图2中信道状态信息的测量方法200的终端设备执行的方法的模块。并且,该终端设备30中的各模块和上述其他操作和/或功能分别为了实现图2中信道状态信息的测量方法200的相应流程,具体地,收发模块31用于执行方法200中的步骤210(包括步骤2101至步骤2103)和步骤230,测量模块32用于执行方法200中的步骤220(包括步骤2201或步骤2202中的一个或两个),各模块执行上述相应步骤的具体过程在方法200中已经详细说明,为了简洁,在此不再赘述。It should be understood that the terminal device 30 may correspond to a network device in the method 200 of measuring channel state information according to an embodiment of the present invention, which may include a terminal device for performing the measurement method 200 of the channel state information in FIG. The module of the method. In addition, each module in the terminal device 30 and the other operations and/or functions described above are respectively used to implement the corresponding process of the method 200 for measuring the channel state information in FIG. 2, and specifically, the transceiver module 31 is configured to perform step 210 in the method 200. (including step 2101 to step 2103) and step 230, the measuring module 32 is configured to perform step 220 in the method 200 (including one or two of step 2201 or step 2202), and each module performs a specific process of the corresponding step in the method. It has been described in detail in 200, and will not be repeated here for brevity.
图4是本申请实施例提供的网络设备40的示意性框图。如图4所示,该网络设备40可包括:收发模块41和确定模块42。FIG. 4 is a schematic block diagram of a network device 40 provided by an embodiment of the present application. As shown in FIG. 4, the network device 40 can include a transceiver module 41 and a determination module 42.
其中,收发模块41可用于接收信道状态信息CSI;The transceiver module 41 is configured to receive channel state information CSI;
确定模块42可用于确定所述收发器接收到的所述CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。The determining module 42 is configured to determine whether the CSI received by the transceiver is measured based on measurement information carried in the at least two downlink control information.
可选地,收发模块41具体用于接收第一CSI报告,所述第一CSI报告包括第一字段和第二字段,所述第一字段中包括至少一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。Optionally, the transceiver module 41 is specifically configured to receive a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes at least one based on one or at least two downlink control information. The CSI of the carried measurement information is measured, and the second field indicates whether each CSI in the first field is measured based on measurement information carried by the at least two downlink control information.
可选地,收发模块41具体用于接收第一CSI报告,所述第一CSI报告包括第一字段,所述第一字段中包括至少一个基于至少两个下行控制信息中携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于所述至少两个下行控制信息中携带的测量信息进行CSI测量。Optionally, the transceiver module 41 is specifically configured to receive the first CSI report, where the first CSI report includes a first field, where the first field includes at least one measured based on measurement information carried in the at least two downlink control information. CSI, or a predefined value; the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
可选地,收发模块41具体用于接收第二CSI报告,所述第二CSI报告包括第三字段和第四字段,所述第三字段用于承载至少一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第四字段用于承载至少一个仅基于一个CSI-RS资源测量得到的CSI。Optionally, the transceiver module 41 is specifically configured to receive a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one downlink control information based on one or at least two The CSI of the measured information is carried, and the fourth field is used to carry at least one CSI measured based on only one CSI-RS resource.
可选地,所述第二CSI报告还包括第五字段,所述第五字段指示所述第三字段中承载的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。Optionally, the second CSI report further includes a fifth field, where the fifth field indicates whether each CSI carried in the third field is measured based on measurement information carried by the at least two downlink control information.
应理解,网络设备40可以对应于根据本发明实施例的信道状态信息的测量方法200中的网络设备,该网络设备40可以包括用于执行图2中信道状态信息的测量方法200的网络设备(例如第一网络设备、第二网络设备或第三网络设备)执行的方法的模块。并且, 该网络设备40中的各模块和上述其他操作和/或功能分别为了实现图2中信道状态信息的测量方法200的相应流程,具体地,收发模块41用于执行方法200中的包括步骤2101至步骤2103中的任意一个步骤和步骤2301至步骤2303中的任意一个步骤,确定模块42用于执行方法200中的步骤2401至步骤2403中的任意一个步骤,各模块执行上述相应步骤的具体过程在方法200中已经详细说明,为了简洁,在此不再赘述。It should be understood that network device 40 may correspond to a network device in measurement method 200 of channel state information in accordance with an embodiment of the present invention, which may include a network device for performing measurement method 200 of channel state information in FIG. 2 ( A module of a method performed by, for example, a first network device, a second network device, or a third network device. In addition, each module in the network device 40 and the other operations and/or functions described above are respectively used to implement the corresponding process of the method 200 for measuring channel state information in FIG. 2, and specifically, the transceiver module 41 is configured to perform the steps included in the method 200. In any one of steps 2101 to 2103 and any one of the steps 2301 to 2303, the determining module 42 is configured to perform any one of the steps 2401 to 2403 in the method 200, and each module performs the specific steps of the corresponding steps. The process has been described in detail in the method 200 and will not be described again for brevity.
图5是本申请实施例提供的终端设备500的另一示意性框图。如图5所示,该终端设备500包括处理器501和收发器502,可选地,该终端设备500还包括存储器503。其中,其中,处理器502、收发器502和存储器503之间通过内部连接通路互相通信,传递控制和/或数据信号,该存储器503用于存储计算机程序,该处理器501用于从该存储器503中调用并运行该计算机程序,以控制该收发器502收发信号。FIG. 5 is another schematic block diagram of a terminal device 500 according to an embodiment of the present application. As shown in FIG. 5, the terminal device 500 includes a processor 501 and a transceiver 502. Optionally, the terminal device 500 further includes a memory 503. Wherein, the processor 502, the transceiver 502 and the memory 503 communicate with each other through an internal connection path for transferring control and/or data signals, the memory 503 is for storing a computer program, and the processor 501 is used for the memory 503. The computer program is called and executed to control the transceiver 502 to send and receive signals.
当存储器503中存储的程序指令被处理器501执行时,该处理器501用于控制收发器502接收下行控制信息,该处理器501还用于在收发器502接收到一个下行控制信息的情况下,仅基于所述一个下行控制信息中携带的测量信息进行CSI测量;否则,处理器501用于基于该预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量。When the program instructions stored in the memory 503 are executed by the processor 501, the processor 501 is configured to control the transceiver 502 to receive downlink control information, and the processor 501 is further configured to: when the transceiver 502 receives a downlink control information. The CSI measurement is performed based on the measurement information carried in the one downlink control information; otherwise, the processor 501 is configured to perform each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period. .
上述处理器501和存储器503可以合成一个处理装置,处理器501用于执行存储器503中存储的程序代码来实现上述功能。具体实现时,该存储器503也可以集成在处理器501中,或者独立于处理器501。上述终端设备500还可以包括天线504,用于将收发器502输出的上行数据或上行控制信令通过无线信号发送出去。The above processor 501 and memory 503 can synthesize a processing device, and the processor 501 is configured to execute the program code stored in the memory 503 to implement the above functions. In a specific implementation, the memory 503 can also be integrated in the processor 501 or independent of the processor 501. The terminal device 500 may further include an antenna 504, configured to send uplink data or uplink control signaling output by the transceiver 502 by using a wireless signal.
具体地,该终端设备500可对应于根据本发明实施例的信道状态信息的测量方法200中的终端设备,该终端设备500可以包括用于执行图2中信道状态信息的测量方法200的终端设备执行的方法的模块。并且,该终端设备500中的各模块和上述其他操作和/或功能分别为了实现图2中信道状态信息的测量方法200的相应流程,具体地,该存储器503用于存储程序代码,使得处理器501在执行该程序代码时,控制该收发器502通过天线504执行方法200中的步骤210(包括步骤2101至步骤2103)和步骤230(包括步骤2301至步骤2303),并执行方法200中的步骤200(包括步骤2201或步骤2202中的一个或两个),各模块执行上述相应步骤的具体过程在方法200中已经详细说明,为了简洁,在此不再赘述。Specifically, the terminal device 500 may correspond to a terminal device in the method 200 of measuring channel state information according to an embodiment of the present invention, and the terminal device 500 may include a terminal device for performing the measurement method 200 of the channel state information in FIG. The module of the method of execution. Moreover, each module in the terminal device 500 and the other operations and/or functions described above are respectively configured to implement a corresponding process of the method 200 for measuring channel state information in FIG. 2, specifically, the memory 503 is configured to store program code, such that the processor 501, when executing the program code, controlling the transceiver 502 to perform step 210 (including steps 2101 to 2103) and step 230 (including steps 2301 to 2303) in method 200 through antenna 504, and perform the steps in method 200. 200 (including one or two of step 2201 or step 2202), the specific process of each module performing the above corresponding steps has been described in detail in the method 200, and is not described herein again for brevity.
上述处理器501可以用于执行前面方法实施例中描述的由终端内部实现的动作,而收发器502可以用于执行前面方法实施例中描述的终端向网络设备传输或者发送的动作。具体请见前面方法实施例中的描述,此处不再赘述。The processor 501 can be used to perform the actions implemented by the terminal in the foregoing method embodiments, and the transceiver 502 can be used to perform the actions of the terminal to transmit or transmit to the network device in the foregoing method embodiments. For details, please refer to the description in the previous method embodiments, and details are not described herein again.
上述处理器501和存储器503可以集成为一个处理装置,处理器501用于执行存储器503中存储的程序代码来实现上述功能。具体实现时,该存储器503也可以集成在处理器501中。The above processor 501 and memory 503 can be integrated into one processing device, and the processor 501 is configured to execute the program code stored in the memory 503 to implement the above functions. In a specific implementation, the memory 503 can also be integrated in the processor 501.
上述终端设备500还可以包括电源505,用于给终端中的各种器件或电路提供电源。The terminal device 500 described above may also include a power source 505 for providing power to various devices or circuits in the terminal.
除此之外,为了使得终端设备的功能更加完善,该终端设备500还可以包括输入单元506,显示单元507,音频电路508,摄像头509和传感器510等中的一个或多个,所述音频电路还可以包括扬声器5082,麦克风5084等。In addition, in order to make the function of the terminal device more perfect, the terminal device 500 may further include one or more of an input unit 506, a display unit 507, an audio circuit 508, a camera 509, a sensor 510, and the like, the audio circuit. A speaker 5082, a microphone 5084, and the like can also be included.
图6是本申请实施例提供的网络设备600的另一示意性框图。如图6所示,该网络设 备600包括处理器610和收发器620,可选的,该网络设备600还包括存储器630。其中,其中,处理器610、收发器620和存储器630之间通过内部连接通路互相通信,传递控制和/或数据信号,该存储器630用于存储计算机程序,该处理器610用于从该存储器630中调用并运行该计算机程序,以控制该收发器620收发信号。当存储器630中存储的程序指令被处理器610执行时,该处理器610用于控制收发器620接收CSI;该处理器610还用于确定接收到的CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。FIG. 6 is another schematic block diagram of a network device 600 according to an embodiment of the present application. As shown in FIG. 6, the network device 600 includes a processor 610 and a transceiver 620. Optionally, the network device 600 further includes a memory 630. Wherein, the processor 610, the transceiver 620 and the memory 630 communicate with each other through an internal connection path for transmitting control and/or data signals, the memory 630 is for storing a computer program, and the processor 610 is configured to receive from the memory 630. The computer program is called and run to control the transceiver 620 to send and receive signals. When the program instructions stored in the memory 630 are executed by the processor 610, the processor 610 is configured to control the transceiver 620 to receive CSI; the processor 610 is further configured to determine whether the received CSI is carried in the at least two downlink control information. The measurement information is measured.
上述处理器610和存储器630可以合成一个处理装置,处理器610用于执行存储器630中存储的程序代码来实现上述功能。具体实现时,该存储器630也可以集成在处理器610中,或者独立于处理器610。The processor 610 and the memory 630 may be combined to form a processing device, and the processor 610 is configured to execute the program code stored in the memory 630 to implement the above functions. The memory 630 may also be integrated in the processor 610 or independent of the processor 610 when implemented.
上述网络设备还可以包括天线640,用于将收发器620输出的下行数据或下行控制信令通过无线信号发送出去。The network device may further include an antenna 640, configured to send downlink data or downlink control signaling output by the transceiver 620 by using a wireless signal.
具体地,该网络设备600可对应于根据本发明实施例的信道状态信息的测量方法200中的网络设备(例如第一网络设备、第二网络设备或第三网络设备),该网络设备600可以包括用于执行图2中信道状态信息的测量方法200的网络设备执行的方法的单元。并且,该网络设备30中的各单元和上述其他操作和/或功能分别为了实现图2中信道状态信息的测量方法200的相应流程,具体地,该存储器630用于存储程序代码,使得处理器610在执行该程序代码时,控制该收发器620通过天线640执行方法200中的步骤2101至步骤2103中的任意一个步骤和步骤2301至步骤2303中的任意一个步骤,并执行步骤2401至步骤2403中的任意一个步骤。各模块执行上述相应步骤的具体过程在方法300中已经详细说明,为了简洁,在此不再赘述。Specifically, the network device 600 may correspond to a network device (eg, a first network device, a second network device, or a third network device) in the method 200 for measuring channel state information according to an embodiment of the present invention, where the network device 600 may A unit of a method performed by a network device for performing the measurement method 200 of the channel state information in FIG. Moreover, each unit in the network device 30 and the other operations and/or functions described above respectively implement a corresponding flow of the method 200 for measuring channel state information in FIG. 2, specifically, the memory 630 is configured to store program code, such that the processor 610, when executing the program code, control the transceiver 620 to perform any one of steps 2101 to 2103 and step 2301 to step 2303 in the method 200 through the antenna 640, and perform steps 2401 to 2403. Any of the steps in . The specific process in which each module performs the above-mentioned corresponding steps has been described in detail in the method 300. For brevity, no further details are provided herein.
本申请还提供一种通信***,其包括前述的一个或多个网络设备,和,一个或多个终端设备。The application also provides a communication system comprising one or more of the aforementioned network devices, and one or more terminal devices.
应理解,在本申请实施例中的处理器可以是中央处理单元(Central Processing Unit,CPU),该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。It should be understood that the processor in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration. Application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
还应理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的随机存取存储器(random access memory,RAM)可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM, DR RAM)。It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory. The volatile memory can be a random access memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic randomness. Synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct RAM).
上述实施例,可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时,上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质。半导体介质可以是固态硬盘。The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains one or more sets of available media. The usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium. The semiconductor medium can be a solid state hard drive.
应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,通常为“和/或”的简略形式。It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this document is usually an abbreviated form of "and/or".
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的***、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.
在本申请所提供的几个实施例中,应该理解到,所揭露的***、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而 前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.
Claims (30)
- 一种信道状态信息CSI的测量方法,其特征在于,包括:A method for measuring channel state information CSI, comprising:终端设备接收下行控制信息,所述下行控制信息中携带用于信道状态信息CSI测量的测量信息,所述测量信息至少包括信道状态信息参考信号CSI-RS资源配置的指示信息,所述CSI-RS资源配置的指示信息用于指示CSI-RS资源;The terminal device receives downlink control information, where the downlink control information carries measurement information for channel state information CSI measurement, and the measurement information includes at least indication information of a channel state information reference signal CSI-RS resource configuration, the CSI-RS The resource configuration indication information is used to indicate a CSI-RS resource;在所述预设时段内接收到一个下行控制信息,所述终端设备仅基于所述一个下行控制信息中携带的测量信息进行CSI测量,否则,基于所述预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量。Receiving a downlink control information in the preset time period, the terminal device performs CSI measurement based on the measurement information carried in the one downlink control information, and otherwise, based on at least two received in the preset time period. The measurement information carried in the downlink control information is subjected to each CSI measurement.
- 根据权利要求1所述的方法,其特征在于,所述终端设备基于所述预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量,包括:The method according to claim 1, wherein the terminal device performs each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period, including:所述终端设备基于所述预设时段内接收到的N个下行控制信息中携带的测量信息进行所述每一次CSI测量,所述N个下行控制信息中除第n个下行控制信息之外的下行控制信息所指示的CSI-RS资源为所述第n个下行控制信息所指示的CSI-RS资源的干扰测量资源,N≥n≥1,N≥2,n、N均为整数。The terminal device performs the CSI measurement according to the measurement information carried in the N downlink control information received in the preset time period, where the N pieces of downlink control information are other than the nth downlink control information. The CSI-RS resource indicated by the downlink control information is an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information, where N≥n≥1, N≥2, and n and N are integers.
- 根据权利要求1或2所述的方法,其特征在于,所述测量信息还包括码本子集限制CSR的指示信息,所述CSR的指示信息用于指示被限制的码本子集,所述码本子集包括码本中的部分或全部码字;以及The method according to claim 1 or 2, wherein the measurement information further includes indication information of a codebook subset restriction CSR, where the indication information of the CSR is used to indicate a restricted codebook subset, The codebook subset includes some or all of the codewords in the codebook;所述终端设备基于所述预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量,包括:The performing, by the terminal device, each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period, including:所述终端设备基于所述预设时段内接收到的至少两个下行控制信息所指示的码本子集进行所述每一次CSI测量。The terminal device performs the CSI measurement according to the codebook subset indicated by the at least two downlink control information received in the preset time period.
- 根据权利要求1至3中任一项所述的方法,其特征在于,所述方法还包括:The method according to any one of claims 1 to 3, further comprising:所述终端设备接收第一指示信息,所述第一指示信息指示是否基于至少两个下行控制信息中携带的测量信息进行CSI测量。The terminal device receives the first indication information, where the first indication information indicates whether to perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- 根据权利要求1至4中任一项所述的方法,其特征在于,若所述终端设备在所述预设时段内接收到多个下行控制信息,所述多个下行控制信息中的每个下行控制信息中携带一个CSI报告配置的指示信息;或者The method according to any one of claims 1 to 4, wherein if the terminal device receives a plurality of downlink control information within the preset time period, each of the plurality of downlink control information The downlink control information carries an indication information of a CSI report configuration; or所述多个下行控制信息中仅一个下行控制信息中携带多个CSI报告配置的指示信息;或者Only one of the plurality of downlink control information carries indication information of multiple CSI report configurations; or所述多个下行控制信息中仅一个下行控制信息中携带一个CSI报告配置的指示信息。Only one downlink control information of the multiple downlink control information carries indication information of a CSI report configuration.
- 根据权利要求1至5中任一项所述的方法,其特征在于,所述方法还包括:The method according to any one of claims 1 to 5, wherein the method further comprises:所述终端设备发送CSI,所述CSI是基于一个或至少两个下行控制信息所携带的测量信息测量得到。The terminal device sends CSI, and the CSI is measured based on measurement information carried by one or at least two downlink control information.
- 根据权利要求6所述的方法,其特征在于,所述终端设备发送CSI,包括:The method according to claim 6, wherein the transmitting, by the terminal device, the CSI comprises:所述终端设备发送一个第一CSI报告,所述第一CSI报告包括第一字段和第二字段,所述第一字段中包括:至少一个基于一个下行控制信息中携带的测量信息测量得到的CSI,或,至少一个基于至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第二字 段指示所述第一字段中的CSI是否基于至少两个下行控制信息中携带的测量信息测量得到;或者The terminal device sends a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes: at least one CSI measured based on measurement information carried in one downlink control information. Or, at least one measured CSI based on the measurement information carried in the at least two downlink control information, where the second field indicates whether the CSI in the first field is measured based on measurement information carried in the at least two downlink control information. Get; or所述终端设备发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段和第二字段,所述第一字段中包括一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的每个CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。Transmitting, by the terminal device, a plurality of first CSI reports, where each first CSI report of the plurality of first CSI reports includes a first field and a second field, where the first field includes one based on one or at least two The CSI measured by the measurement information carried in the downlink control information, the second field indicating whether each CSI in the first field is measured based on the measurement information carried in the at least two downlink control information.
- 根据权利要求6所述的方法,其特征在于,所述终端设备发送CSI,包括:The method according to claim 6, wherein the transmitting, by the terminal device, the CSI comprises:所述终端设备发送一个第一CSI报告,所述第一CSI报告包括第一字段,所述第一字段中包括至少一个基于至少两个下行控制信息中携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息中携带的测量信息进行CSI测量;或者The terminal device sends a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on measurement information carried in at least two downlink control information, or a pre- Defining a value; the predefined value implicitly indicating that the terminal device does not perform CSI measurement based on measurement information carried in the at least two downlink control information; or所述终端设备发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段,所述第一字段中包括一个基于至少两个下行控制信息携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息中携带的测量信息进行CSI测量。The terminal device sends a plurality of first CSI reports, where each first CSI report of the multiple first CSI reports includes a first field, where the first field includes one that is carried based on at least two downlink control information. Measuring the CSI obtained by the information measurement, or a predefined value; the predefined value implicitly indicating that the terminal device does not perform CSI measurement based on the measurement information carried in the at least two downlink control information.
- 根据权利要求6所述的方法,其特征在于,所述终端设备发送CSI,包括:The method according to claim 6, wherein the transmitting, by the terminal device, the CSI comprises:所述终端设备发送一个第二CSI报告,所述第二CSI报告包括第三字段和第四字段,所述第三字段用于承载至少一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第四字段用于承载至少一个仅基于一个下行控制信息中携带的测量信息测量得到的CSI;或者The terminal device sends a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one measurement information carried in one or at least two downlink control information. Measuring the obtained CSI, where the fourth field is used to carry at least one CSI measured based on measurement information carried in only one downlink control information; or所述终端设备发送多个第二CSI报告,所述多个第二CSI报告中的每个第二CSI报告包括第三字段和第四字段,所述第三字段用于承载一个基于一个或至少两个下行控制信息中携带的测量信息测量得到的CSI,所述第四字段仅用于承载一个基于一个下行控制信息中携带的测量信息测量得到的CSI。Transmitting, by the terminal device, a plurality of second CSI reports, each second CSI report of the plurality of second CSI reports includes a third field and a fourth field, where the third field is used to carry one based on one or at least The CSI measured by the measurement information carried in the two downlink control information, the fourth field is only used to carry a CSI measured based on the measurement information carried in one downlink control information.
- 根据权利要求9所述的方法,其特征在于,所述第二CSI报告还包括第五字段,所述第五字段指示所述第三字段中承载的每个CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。The method according to claim 9, wherein the second CSI report further comprises a fifth field, the fifth field indicating whether each CSI carried in the third field is based on at least two downlink control information The measurement information carried in the measurement is obtained.
- 一种信道状态信息CSI的测量方法,其特征在于,包括:A method for measuring channel state information CSI, comprising:网络设备接收信道状态信息CSI;The network device receives channel state information CSI;所述网络设备确定接收到的所述CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。The network device determines whether the received CSI is measured based on measurement information carried in the at least two downlink control information.
- 根据权利要求1至11中任一项所述的方法,其特征在于,所述测量信息承载于CSI请求CSI request字段。The method according to any one of claims 1 to 11, wherein the measurement information is carried in a CSI Request CSI request field.
- 一种终端设备,其特征在于,包括收发器和处理器,其中,A terminal device, comprising: a transceiver and a processor, wherein所述收发器用于接收下行控制信息,所述下行控制信息中携带用于信道状态信息CSI测量的测量信息,所述测量信息至少包括信道状态信息参考信号CSI-RS资源配置的指示信息,所述CSI-RS资源配置的指示信息用于指示CSI-RS资源;The transceiver is configured to receive downlink control information, where the downlink control information carries measurement information for channel state information CSI measurement, where the measurement information includes at least indication information of a channel state information reference signal CSI-RS resource configuration, The indication information of the CSI-RS resource configuration is used to indicate the CSI-RS resource;所述收发器在预设时段内接收到一个下行控制信息,所述处理器用于仅基于所述一个下行控制信息中携带的测量信息进行CSI测量;否则,所述处理器用于基于所述预设时段 内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量。Receiving, by the transceiver, a downlink control information, where the processor is configured to perform CSI measurement based on the measurement information carried in the one downlink control information; otherwise, the processor is configured to use the preset The measurement information carried in the at least two downlink control information received in the time period is subjected to each CSI measurement.
- 根据权利要求13所述的终端设备,其特征在于,所述处理器具体用于,基于所述预设时段内接收到的N个下行控制信息中携带的测量信息进行所述每一次CSI测量,所述N个下行控制信息中除第n个下行控制信息之外的下行控制信息所指示的CSI-RS资源为所述第n个下行控制信息所指示的CSI-RS资源的干扰测量资源,N≥n≥1,N≥2,且n、N均为整数。The terminal device according to claim 13, wherein the processor is configured to perform the CSI measurement according to the measurement information carried in the N downlink control information received in the preset time period, The CSI-RS resource indicated by the downlink control information except the nth downlink control information of the N downlink control information is an interference measurement resource of the CSI-RS resource indicated by the nth downlink control information, N ≥n≥1, N≥2, and n and N are integers.
- 根据权利要求13或14所述的终端设备,其特征在于,所述测量信息还包括码本子集限制CSR的指示信息,所述码本子集限制的指示信息指示被限制的码本子集,所述码本子集包括码本中的部分或全部码字;The terminal device according to claim 13 or 14, wherein the measurement information further comprises indication information of a codebook subset restriction CSR, and the indication information of the codebook subset restriction indicates a restricted codebook subset The codebook subset includes some or all of the codewords in the codebook;所述处理器具体用于,基于所述预设时段内接收到至少两个下行控制信息指示的码本子集进行所述每一次CSI测量。The processor is specifically configured to perform the CSI measurement according to the codebook subset that is received by the at least two downlink control information indications in the preset time period.
- 根据权利要求13至15中任一项所述的终端设备,其特征在于,所述收发器还用于接收第一指示信息,所述第一指示信息指示是否基于至少两个下行控制信息中携带的测量信息进行CSI测量。The terminal device according to any one of claims 13 to 15, wherein the transceiver is further configured to receive first indication information, where the first indication information indicates whether to be carried in the at least two downlink control information. The measurement information is used for CSI measurement.
- 根据权利要求13至16中任一项所述的终端设备,其特征在于,若所述收发器在所述预设时段内接收到多个下行控制信息,所述多个下行控制信息中的每个下行控制信息中携带一个信道状态信息CSI报告配置的指示信息;或者The terminal device according to any one of claims 13 to 16, wherein if the transceiver receives a plurality of downlink control information within the preset time period, each of the plurality of downlink control information The downlink control information carries an indication information of a channel state information CSI report configuration; or所述多个下行控制信息中的一个下行控制信息中携带多个CSI报告配置的指示信息;或者One of the plurality of downlink control information carries indication information of multiple CSI report configurations; or所述多个下行控制信息中的一个下行控制信息中携带一个CSI报告配置的指示信息。One downlink control information of the multiple downlink control information carries indication information of a CSI report configuration.
- 根据权利要求13至17中任一项所述的终端设备,其特征在于,所述收发器还用于发送CSI,所述CSI是基于一个或至少两个下行控制信息所携带的测量信息测量得到。The terminal device according to any one of claims 13 to 17, wherein the transceiver is further configured to send CSI, and the CSI is measured based on measurement information carried by one or at least two downlink control information. .
- 根据权利要求18所述的终端设备,其特征在于,所述收发器具体用于,The terminal device according to claim 18, wherein the transceiver is specifically configured to:发送一个第一CSI报告,所述第一CSI报告包括第一字段和第二字段,所述第一字段中包括:至少一个基于一个下行控制信息携带的测量信息测量得到的CSI,或,至少一个基于至少两个下行控制信息携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的CSI是否基于至少两个下行控制信息中携带的测量信息测量得到;或者Sending a first CSI report, where the first CSI report includes a first field and a second field, where the first field includes: at least one CSI measured based on measurement information carried by one downlink control information, or at least one The CSI measured based on the measurement information carried by the at least two downlink control information, where the second field indicates whether the CSI in the first field is measured based on the measurement information carried in the at least two downlink control information; or发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段和第二字段,所述第一字段中包括一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第二字段指示所述第一字段中的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。Transmitting a plurality of first CSI reports, each of the plurality of first CSI reports includes a first field and a second field, where the first field includes one based on one or at least two downlink control information The CSI of the carried measurement information is measured, and the second field indicates whether each CSI in the first field is measured based on measurement information carried by the at least two downlink control information.
- 根据权利要求18所述的终端设备,其特征在于,所述收发器具体用于,The terminal device according to claim 18, wherein the transceiver is specifically configured to:发送一个第一CSI报告,所述第一CSI报告包括第一字段,所述第一字段中包括至少一个基于至少两个下行控制信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息携带的测量信息进行CSI测量;或者Sending a first CSI report, where the first CSI report includes a first field, where the first field includes at least one CSI measured based on at least two downlink control information, or a predefined value; the predefined value is hidden Instructing the terminal device not to perform CSI measurement based on measurement information carried by the at least two downlink control information; or发送多个第一CSI报告,所述多个第一CSI报告中的每个第一CSI报告包括第一字段,所述第一字段中包括一个基于至少两个下行控制信息携带的测量信息测量得到的CSI,或预定义值;所述预定义值隐式指示所述终端设备未基于至少两个下行控制信息携带的测量信息进行CSI测量。Sending a plurality of first CSI reports, each of the plurality of first CSI reports includes a first field, where the first field includes a measurement information that is carried based on the at least two downlink control information. CSI, or a predefined value; the predefined value implicitly indicates that the terminal device does not perform CSI measurement based on measurement information carried by at least two downlink control information.
- 根据权利要求18所述的终端设备,其特征在于,所述收发器具体用于,The terminal device according to claim 18, wherein the transceiver is specifically configured to:发送一个第二CSI报告,所述第二CSI报告包括第三字段和第四字段,所述第三字段用于承载至少一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第四字段用于承载至少一个仅基于一个下行控制信息携带的测量信息测量得到的CSI;或者Sending a second CSI report, where the second CSI report includes a third field and a fourth field, where the third field is used to carry at least one CSI measured based on measurement information carried by one or at least two downlink control information, The fourth field is configured to carry at least one CSI measured based on measurement information carried only by one downlink control information; or发送多个第二CSI报告,所述多个第二CSI报告中的每个第二CSI报告包括第三字段和第四字段,所述第三字段用于承载一个基于一个或至少两个下行控制信息携带的测量信息测量得到的CSI,所述第四字段仅用于承载一个基于一个下行控制信息携带的测量信息测量得到的CSI。Transmitting a plurality of second CSI reports, each of the plurality of second CSI reports including a third field and a fourth field, the third field being used to carry one based on one or at least two downlink controls The CSI obtained by measuring the measurement information carried by the information, the fourth field is only used to carry a CSI measured based on measurement information carried by one downlink control information.
- 根据权利要求21所述的终端设备,其特征在于,所述第二CSI报告还包括第五字段,所述第五字段指示所述第三字段中承载的每个CSI是否基于至少两个下行控制信息携带的测量信息测量得到。The terminal device according to claim 21, wherein the second CSI report further comprises a fifth field, the fifth field indicating whether each CSI carried in the third field is based on at least two downlink controls The measurement information carried by the information is measured.
- 一种网络设备,其特征在于,包括:A network device, comprising:收发器,用于接收信道状态信息CSI;a transceiver, configured to receive channel state information CSI;处理器,用于确定所述收发器接收到的所述CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。And a processor, configured to determine whether the CSI received by the transceiver is measured based on measurement information carried in the at least two downlink control information.
- 根据权利要求13至22中任一项所述的终端设备,或者,根据所述权利要求23所述的网络设备,其特征在于,所述测量信息承载于CSI请求CSI request字段。The terminal device according to any one of claims 13 to 22, or the network device according to claim 23, wherein the measurement information is carried in a CSI request CSI request field.
- 一种芯片***,其特征在于,包括:A chip system, comprising:处理器,用于从存储器调用并运行计算机程序,使得安装有所述芯片***的终端设备执行如权利要求1至10、12中任意一项所述的方法。And a processor for calling and running the computer program from the memory, such that the terminal device on which the chip system is installed performs the method according to any one of claims 1 to 10, 12.
- 一种芯片***,其特征在于,包括:A chip system, comprising:处理器,用于从存储器调度并运行计算机程序,使得安装有所述芯片***的网络设备执行如权利要求11或12所述的方法。A processor for scheduling and running a computer program from the memory such that the network device on which the chip system is installed performs the method of claim 11 or 12.
- 一种终端设备,其特征在于,包括:A terminal device, comprising:收发模块,用于接收下行控制信息,所述下行控制信息中携带用于信道状态信息CSI测量的测量信息,所述测量信息至少包括信道状态信息参考信号CSI-RS资源配置的指示信息,所述CSI-RS资源配置的指示信息用于指示CSI-RS资源;a transceiver module, configured to receive downlink control information, where the downlink control information carries measurement information for channel state information CSI measurement, where the measurement information includes at least indication information of a channel state information reference signal CSI-RS resource configuration, The indication information of the CSI-RS resource configuration is used to indicate the CSI-RS resource;测量模块,用于在所述收发模块在预设时段内接收到一个下行控制信息的情况下,仅基于所述一个下行控制信息中携带的测量信息进行CSI测量;否则,所述测量模块用于基于所述预设时段内接收到的至少两个下行控制信息中携带的测量信息进行每一次CSI测量。a measurement module, configured to perform CSI measurement based on measurement information carried in the one downlink control information only when the transceiver module receives one downlink control information in a preset time period; otherwise, the measurement module is used to Performing each CSI measurement based on the measurement information carried in the at least two downlink control information received in the preset time period.
- 一种网络设备,其特征在于,包括:A network device, comprising:收发模块,用于接收信道状态信息CSI;a transceiver module, configured to receive channel state information CSI;确定模块,用于确定接收到的所述CSI是否基于至少两个下行控制信息中携带的测量信息测量得到。And a determining module, configured to determine whether the received CSI is measured based on measurement information carried in the at least two downlink control information.
- 一种计算机可读存储介质,包括计算机程序,当其在计算机上运行时,使得所述计算机执行如权利要求1至12中任一项所述的方法。A computer readable storage medium comprising a computer program that, when executed on a computer, causes the computer to perform the method of any one of claims 1 to 12.
- 一种计算机程序产品,所述计算机程序产品包括计算机程序,当所述计算机程序 在计算机上运行时,使得所述计算机执行如权利要求1至12中任一项所述的方法。A computer program product, comprising a computer program, when the computer program is run on a computer, causing the computer to perform the method of any one of claims 1 to 12.
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