WO2017084093A1 - 一种发送或者接收信道状态信息csi的方法、终端及基站 - Google Patents

一种发送或者接收信道状态信息csi的方法、终端及基站 Download PDF

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Publication number
WO2017084093A1
WO2017084093A1 PCT/CN2015/095170 CN2015095170W WO2017084093A1 WO 2017084093 A1 WO2017084093 A1 WO 2017084093A1 CN 2015095170 W CN2015095170 W CN 2015095170W WO 2017084093 A1 WO2017084093 A1 WO 2017084093A1
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Prior art keywords
csi
reporting mode
csi process
target
processes
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PCT/CN2015/095170
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English (en)
French (fr)
Inventor
刘建琴
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/095170 priority Critical patent/WO2017084093A1/zh
Priority to EP15908589.3A priority patent/EP3370357A4/en
Priority to CN201580084437.0A priority patent/CN108352925A/zh
Publication of WO2017084093A1 publication Critical patent/WO2017084093A1/zh
Priority to US15/983,675 priority patent/US10660075B2/en

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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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/73—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for taking measurements, e.g. using sensing coils
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a base station for transmitting or receiving CSI (Channel State Information).
  • CSI Channel State Information
  • MIMO Multiple-Input Multiple-Output
  • LTE Long Term Evolution
  • DM-RS Demodulation Reference Signal
  • Step 1 The base station sends configuration information to the terminal.
  • Step 2 The terminal performs channel measurement according to the configuration information sent by the base station, and feeds the measured CSI to the base station.
  • Step 3 The base station performs downlink scheduling according to the CSI fed back by the terminal, and sends the PDSCH to the terminal through the DM-RS according to the scheduling result.
  • multi-stream transmission based on DM-RS is a two-dimensional beamforming, that is, the transmitting antennas are horizontally placed, and only horizontal beams can be generated, as shown in FIG.
  • three-dimensional beamforming technology is applied. 3D beamforming increases the degree of freedom in the vertical direction with respect to the current two-dimensional beamforming. Then more terminals can be multiplexed on the same time-frequency resource. Different terminals pass the beam in the vertical or horizontal direction. To distinguish, which in turn can improve resource utilization or spectrum efficiency.
  • the base station usually needs to configure multiple sets of measurement reference signal resources acting on the precoding matrix for each terminal, so that the terminal obtains the optimal one by measuring multiple sets of reference signal resources.
  • Set of measurement reference signal resources In order to facilitate the measurement of different terminals by the base station
  • the precoding matrix corresponding to the reference signal resource is managed and coordinated, and the terminal may select multiple sets of measurement reference signal resources, and report the CSI corresponding to the multiple sets of measurement reference signal resources to the base station.
  • the reporting mode of the CSI for each set of measurement reference signal resources is currently configured by the base station, so that there is a defect that the required CSI reporting overhead is too large and the flexibility is poor due to too many candidate measurement reference signal resources.
  • the embodiments of the present invention provide a method, a terminal, and a base station for transmitting or receiving CSI, which are used to solve the defect that the flexibility in the prior art is poor.
  • a method for transmitting channel state information CSI including:
  • the terminal selects a target CSI process from the N channel state information CSI processes
  • the terminal sets a CSI reporting mode corresponding to the target CSI process, and sends a CSI corresponding to the CSI process according to the CSI reporting mode.
  • the CSI reporting mode corresponding to the target CSI process is a first granular CSI reporting mode
  • the first granular CSI reporting mode refers to adopting a time domain less than a threshold. / or frequency domain resource granularity for CSI reporting.
  • the terminal after determining, by the terminal, the CSI reporting mode corresponding to the target CSI process, the terminal sends the CSI according to the CSI reporting mode. Before the CSI corresponding to the process, it also includes:
  • the terminal sends a first notification message to the base station, where the first notification message is used to notify the base station of the CSI reporting mode corresponding to the target CSI process.
  • the method further includes:
  • the terminal determines that the CSI reporting mode of the other CSI process is the second granular CSI reporting mode, and the second granularity CSI reporting mode refers to reporting the CSI by using the time domain and/or the frequency domain resource granularity greater than or equal to the threshold.
  • the other CSI processes refer to CSI processes except the target CSI process in the N CSI processes.
  • the method further includes:
  • the terminal sends a second notification message to the base station, where the second notification message is used to notify the base station of the CSI reporting mode corresponding to the other CSI processes.
  • the terminal selects a target CSI process from the N channel state information CSI processes, including:
  • the terminal For any one of the N CSI processes, the terminal performs channel quality measurement based on reference signal resources corresponding to the any one of the CSI processes, and obtains channel quality measurement results corresponding to any one of the CSI processes. ;
  • the terminal selects a target CSI process from the N CSI processes according to channel quality measurement results respectively corresponding to the N CSI processes.
  • the target CSI process includes a first CSI process and a second CSI process
  • the first CSI process is associated with a first reference signal resource
  • the second CSI process is associated with a second reference signal resource
  • Determining, by the terminal, a CSI reporting mode corresponding to the target CSI process including:
  • the terminal according to a channel quality measurement result corresponding to the first CSI process, corresponding to the second CSI process And determining, by the channel quality measurement result, a CSI reporting mode corresponding to the second CSI process, including:
  • the terminal uses the differential feedback mode as the second CSI according to the channel quality measurement result corresponding to the first CSI process and the channel quality measurement result corresponding to the second CSI process.
  • the differential feedback mode refers to a reporting mode in which the CSI corresponding to the second CSI process is reported as a difference reported by the CSI corresponding to the first CSI process.
  • the method includes:
  • the terminal sends a third notification message to the base station, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process.
  • a method for receiving channel state information CSI including:
  • the base station determines, according to the first notification message, a CSI reporting mode corresponding to the target CSI process, where the N CSI processes include the target CSI process.
  • the CSI reporting mode corresponding to the target CSI process is a first granular CSI reporting mode
  • the first granular CSI reporting mode refers to adopting a time domain less than a threshold. / or frequency domain resource granularity for CSI reporting.
  • the method further includes:
  • the base station receives a second notification message
  • the base station determines, according to the second notification message, that the CSI reporting mode of the other CSI process is the second granularity CSI reporting mode, and the second granularity CSI reporting mode refers to adopting the time domain and/or the frequency domain resource that is greater than or equal to the threshold.
  • the CSI is reported in the granularity, and the other CSI processes refer to CSI processes except the target CSI process in the N CSI processes.
  • the target CSI process includes a first CSI process and a second CSI process
  • the first CSI process is associated with a first reference signal resource
  • the second CSI process is associated with a second reference signal resource; the method further includes:
  • the base station receives a third notification message, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process, and the CSI reporting mode corresponding to the second CSI process And determining, according to a channel quality measurement result corresponding to the first CSI process, a channel quality measurement result corresponding to the second CSI process.
  • the CSI reporting mode corresponding to the second CSI process is a differential feedback mode, and the differential feedback mode refers to the second
  • the CSI corresponding to the CSI process is reported as a reporting mode of the difference reported by the CSI corresponding to the first CSI process.
  • a terminal including:
  • a processing unit configured to select a target CSI process from the N channel state information CSI processes
  • the processing unit is further configured to: set a CSI reporting mode corresponding to the target CSI process;
  • a sending unit configured to send, according to the CSI reporting mode, a CSI corresponding to the CSI process.
  • the CSI reporting mode corresponding to the target CSI process is a first granular CSI reporting mode
  • the first granular CSI reporting mode refers to adopting a time domain less than a threshold. / or frequency domain resource granularity for CSI reporting.
  • the sending unit is further configured to send a first notification message to the base station, where the first notification message is used to notify the The CSI reporting mode corresponding to the target CSI process by the base station.
  • the processing unit is further configured to determine that a CSI reporting mode of the other CSI process is the first The second-level CSI reporting mode, where the second-level CSI reporting mode is to report the CSI by using a time domain and/or a frequency domain resource granularity greater than or equal to the threshold, where the other CSI processes are in the N CSI processes. The CSI process outside the target CSI process is removed.
  • the processing unit is further configured to: determine a CSI reporting mode corresponding to the other CSI process;
  • the sending unit is further configured to send a second notification message to the base station, where the second notification message is used to notify the base station of a CSI reporting mode corresponding to the other CSI processes.
  • the processing unit selects from the N channel state information CSI processes When the target CSI process is out, it is specifically:
  • the target CSI process includes the first CSI process and the second CSI process
  • the first CSI process is associated with a first reference signal resource
  • the second CSI process is associated with a second reference signal resource
  • the processing unit determines the CSI reporting mode corresponding to the target CSI process, specifically:
  • the processing unit according to a channel quality measurement result corresponding to the first CSI process, corresponding to the second CSI process
  • the channel quality measurement result is specifically:
  • a differential feedback mode is used as a CSI reporting mode corresponding to the second CSI process, according to a channel quality measurement result corresponding to the first CSI process and a channel quality measurement result corresponding to the second CSI process;
  • the differential feedback mode refers to a reporting mode in which the CSI corresponding to the second CSI process is reported as a difference reported by the CSI corresponding to the first CSI process.
  • the sending unit is further configured to send a third notification message to the base station, where the third notification message is used by The CSI reporting mode corresponding to the second CSI process of the base station is notified.
  • a base station including:
  • a receiving unit configured to receive a first notification message sent by the terminal
  • a processing unit configured to determine, according to the first notification message, a CSI reporting mode corresponding to the target CSI process, where the N CSI processes include the target CSI process.
  • the CSI reporting mode corresponding to the target CSI process is a first granular CSI reporting mode
  • the first granular CSI reporting mode refers to adopting a time domain less than a threshold. / or frequency domain resource granularity for CSI reporting.
  • the receiving unit is further configured to receive a second notification message
  • the processing unit is further configured to: determine, according to the second notification message, that a CSI reporting mode of another CSI process is a second granular CSI reporting mode, where the second granular CSI reporting mode refers to adopting a time domain greater than or equal to a threshold.
  • the CSI is reported in the frequency domain resource granularity, and the other CSI processes refer to the CSI processes except the target CSI process in the N CSI processes.
  • the target CSI process includes a first CSI process and a second CSI process
  • the first CSI process is associated with a first reference signal resource
  • the second CSI process is associated with a second reference signal resource
  • the receiving unit is further configured to receive a third notification message, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process, and the CSI reporting mode corresponding to the second CSI process is And determining, according to a channel quality measurement result corresponding to the first CSI process, a channel quality measurement result corresponding to the second CSI process.
  • the CSI reporting mode corresponding to the second CSI process is a differential feedback mode, and the differential feedback mode refers to the second
  • the CSI corresponding to the CSI process is reported as a reporting mode of the difference reported by the CSI corresponding to the first CSI process.
  • a method for transmitting or receiving CSI in which a terminal selects a target CSI process from a C channel state information CSI process, and the terminal sets a CSI reporting mode corresponding to the target CSI process, and according to the The CSI reporting mode sends a CSI corresponding to the CSI process,
  • the terminal itself can set the CSI reporting mode corresponding to the CSI process, and send the CSI corresponding to the CSI process according to the set CSI reporting mode.
  • only the base station configures the CSI reporting mode corresponding to each CSI process. , therefore, increased flexibility.
  • FIG. 1 is a schematic diagram of two-dimensional beamforming provided by the prior art
  • FIG. 3 is another flowchart of receiving CSI according to an embodiment of the present invention.
  • FIG. 4A is a schematic structural diagram of a function of a terminal according to an embodiment of the present invention.
  • FIG. 4B is a schematic diagram of another functional structure of a terminal according to an embodiment of the present disclosure.
  • FIG. 5A is a schematic structural diagram of a function of a base station according to an embodiment of the present disclosure.
  • FIG. 5B is a schematic diagram of another functional structure of a base station according to an embodiment of the present invention.
  • the technical solution described below is applicable to a wireless communication system, for example, an LTE (Long Term Evolution) system, a WCDMA (Wide-Band Code Division Multiple Access) system, or the like.
  • LTE Long Term Evolution
  • WCDMA Wide-Band Code Division Multiple Access
  • a process for sending CSI is as follows:
  • Step 200 The terminal selects a target CSI process from the N channel state information CSI processes.
  • Step 210 The terminal sets a CSI reporting mode corresponding to the target CSI process, and sends a CSI corresponding to the CSI process according to the CSI reporting mode.
  • the terminal selects a target CSI process from the N channel state information CSI processes; the terminal sets a CSI reporting mode corresponding to the target CSI process, and sends a CSI corresponding to the CSI process according to the CSI reporting mode, in the solution.
  • the terminal itself can set the CSI reporting mode corresponding to the CSI process, and send the CSI corresponding to the CSI process according to the set CSI reporting mode.
  • only the base station configures the CSI reporting mode corresponding to each CSI process, so Flexibility.
  • the CSI reporting mode corresponding to the target CSI process is the first granular CSI reporting mode, and the first granular CSI reporting mode is when the threshold is less than the threshold.
  • the domain and/or frequency domain resource granularity is reported for CSI.
  • the terminal further includes the following operations:
  • the terminal sends a first notification message to the base station, where the first notification message is used to notify the base station of the CSI reporting mode corresponding to the target CSI process.
  • the first notification message when the first notification message is notified of the CSI reporting mode corresponding to the target CSI process, the first notification message may be notified by using a specified bit in the first notification message, for example, by using a 1-bit RTI (Report Type Indication, The report type indication is used to indicate the CSI reporting mode adopted by the current CSI report.
  • RTI Report Type Indication
  • the report type indication is used to indicate the CSI reporting mode adopted by the current CSI report.
  • the CSI reporting mode corresponding to the target CSI process When the RTI is "0", the CSI reporting mode corresponding to the target CSI process is the first granular CSI reporting mode.
  • the CSI reporting mode corresponding to the target CSI process is the first granular CSI.
  • the reporting mode can also be described by two or more bits, which are not specifically limited herein.
  • the feedback types of the parameters in the CSI reporting mode corresponding to the respective target CSI processes may match, and the matching may refer to the same or similar feedback types.
  • the CSI reporting mode corresponding to the first target CSI process is feedback broadband PMI and broadband.
  • the CSI reporting mode corresponding to the second target CSI process is a feedback wideband PMI, a subband CQI, and a wideband CQI.
  • the CSI reporting mode corresponding to the two target CSI processes includes the reporting of the broadband PMI and the wideband CQI, and thus is considered
  • the CSI reporting mode is a similar CSI reporting mode; or the CSI reporting mode corresponding to the first target CSI process is reporting the broadband PMI and the broadband CQI, and the CSI reporting mode corresponding to the second target CSI process is reporting the broadband PMI and the broadband CQI, and the two target CSI processes.
  • the feedback types of the respective parameters in the corresponding CSI reporting mode are identical.
  • the CSI process may associate at least one set of measurement reference signal resources.
  • the terminal determines that the CSI reporting mode of the other CSI process is the second-level CSI reporting mode, and the second-level CSI reporting mode refers to reporting the CSI by using the time domain and/or the frequency domain resource granularity greater than or equal to the threshold, and other CSI processes refer to the CSI reporting mode.
  • the CSI processes other than the target CSI process are removed from the N CSI processes.
  • the method further includes the following operations:
  • the terminal determines a CSI reporting mode corresponding to another CSI process
  • the terminal sends a second notification message to the base station, where the second notification message is used to notify the base station of the CSI reporting mode corresponding to other CSI processes.
  • the terminal selects the best T CSI processes as the target CSI process in the P CSI processes.
  • the CSI processes correspond to a first-granular CSI reporting mode
  • the other PT CSI processes correspond to the second-granular CSI reporting mode.
  • the second notification message when the second notification message is notified of the CSI reporting mode corresponding to the other CSI processes, the second notification message may be specifically notified by using a specified bit in the second notification message, for example, by using a 1-bit RTI to indicate the current CSI reporting.
  • the CSI reporting mode adopted. When the RTI is "0", the CSI reporting mode corresponding to the other CSI processes is the second granularity CSI reporting mode. Of course, if the RTI is "1", the CSI reporting mode corresponding to the other CSI processes is the second granularity CSI.
  • the reporting mode can also be described by two or more bits, which are not specifically limited herein.
  • the CSI reporting mode fed back by the terminal may be adaptively changed according to the channel quality measurement result.
  • the CSI reporting mode of the first two CSI processes can be configured by the base station to be the PUCCH reporting mode. 1-1, and the CSI reporting mode of the two CSI processes is the PUCCH reporting mode 2-1. That is, the CSI reporting mode corresponding to the first two CSI processes is the broadband PMI, the broadband CQI, and the CSI reporting mode corresponding to the last two CSI processes. For wideband PMI, subband CQI + wideband CQI.
  • the CSI reporting mode of the first two CSI processes configured by the base station is the second granular CSI reporting mode, and the CSI reporting mode of the latter two CSI processes is the first granular CSI reporting mode.
  • the selected T best CSI processes are the first two CSI processes in the four processes
  • the terminal can set the CSI reporting mode of the first two CSI processes to the PUCCH reporting mode 2-1, and the CSI reporting mode of the last two CSI processes is the PUCCH reporting mode 1-1, and the terminal indicates the four by using the first notification message.
  • the CSI reporting mode corresponding to the CSI process is
  • the terminal may further indicate the CSI reporting mode corresponding to the last two CSI processes by using the 1-bit RTI.
  • the RTI can be jointly coded with the RI in the CSI to form a new type of CSI report, and then reported by the terminal to the base station through the PUCCH.
  • the RTI may be separately encoded and reported to the base station by the terminal through the PUCCH.
  • the terminal when the terminal selects the target CSI process from the N channel state information CSI processes, the terminal may be selected as follows:
  • the terminal For any CSI process in the N CSI processes, the terminal performs channel quality measurement based on reference signal resources corresponding to any CSI process, and obtains channel quality measurement results corresponding to any CSI process;
  • the terminal selects a target CSI process from the N CSI processes according to channel quality measurement results corresponding to the N CSI processes respectively.
  • the target CSI process includes the first CSI process and the second CSI process
  • the first CSI process is associated with the first reference signal resource, and the second CSI process and the second reference are used.
  • Signal resources are associated;
  • the terminal may determine the CSI reporting mode corresponding to the target CSI process.
  • the terminal determines a CSI reporting mode corresponding to the second CSI process according to the channel quality measurement result corresponding to the first CSI process and the channel quality measurement result corresponding to the second CSI process.
  • the target CSI process includes the first CSI process and the second CSI process
  • the first CSI process is associated with the first reference signal resource
  • the second CSI process is associated with the second reference signal resource, according to the channel corresponding to the first CSI process
  • the quality measurement result and the channel quality measurement result corresponding to the second CSI process are comprehensively used to comprehensively determine the current CSI reporting mode, such as when the terminal finds that the current channel quality measurement result is not better than the reference signal resource corresponding to the first CSI process.
  • the terminal may not report the CSI corresponding to the second CSI process. Otherwise, the terminal determines the CSI reporting mode corresponding to the second CSI process, and reports the CSI corresponding to the second CSI process by using the determined CSI reporting mode.
  • the terminal when the terminal determines the CSI reporting mode corresponding to the second CSI process according to the channel quality measurement result corresponding to the first CSI process and the channel quality measurement result corresponding to the second CSI process, the terminal may optionally use The following way:
  • the terminal uses the differential feedback mode as the CSI reporting mode corresponding to the second CSI process according to the channel quality measurement result corresponding to the first CSI process and the channel quality measurement result corresponding to the second CSI process;
  • the differential feedback mode refers to a reporting mode in which the CSI corresponding to the second CSI process is reported as the difference reported by the CSI corresponding to the first CSI process.
  • the CSI reported at the current time may be a differential feedback of the CSI reporting result corresponding to the reference signal resource corresponding to the first CSI process.
  • the terminal only reports the difference between the CQI measured at the current time and the CQI corresponding to the first CSI process measured at the previous time.
  • the PMI measured at the current time can also be reported at the same time.
  • the PMI measured at the current time may be a PMI after the codebook subset is restricted based on the CSI corresponding to the first CSI process measured at the previous time.
  • the number of reference signal resources associated with each CSI process may be dynamic or semi-statically variable, and even the number of antenna ports corresponding to each reference signal resource associated with the network port is also It can be dynamic or semi-statically variable.
  • the number of antenna ports corresponding to different reference signal resources may be different.
  • the terminal sends a third notification message to the base station, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process.
  • a process for receiving CSI is as follows:
  • Step 300 The base station receives the first notification message sent by the terminal.
  • Step 310 The base station determines, according to the first notification message, a CSI reporting mode corresponding to the target CSI process, where the N CSI processes include the target CSI process.
  • the terminal selects a target CSI process from the N channel state information CSI processes; the terminal sets a CSI reporting mode corresponding to the target CSI process, and sends a CSI corresponding to the CSI process according to the CSI reporting mode, in the solution.
  • the terminal itself can set the CSI reporting mode corresponding to the CSI process, and send the CSI corresponding to the CSI process according to the set CSI reporting mode.
  • only the base station configures the CSI reporting mode corresponding to each CSI process, so Flexibility.
  • the CSI reporting mode corresponding to the target CSI process is the first granular CSI reporting mode, and the first granular CSI reporting mode is when the threshold is less than the threshold.
  • the domain and/or frequency domain resource granularity is reported for CSI.
  • the first notification message when the first notification message is notified of the CSI reporting mode corresponding to the target CSI process, the first notification message may be notified by using a specified bit in the first notification message, for example, by using a 1-bit RTI (Report Type Indication, The report type indication is used to indicate the CSI reporting mode adopted by the current CSI report.
  • RTI Report Type Indication
  • the report type indication is used to indicate the CSI reporting mode adopted by the current CSI report.
  • the CSI reporting mode corresponding to the target CSI process When the RTI is "0", the CSI reporting mode corresponding to the target CSI process is the first granular CSI reporting mode.
  • the CSI reporting mode corresponding to the target CSI process is the first granular CSI.
  • the reporting mode can also be described by two or more bits, which are not specifically limited herein.
  • the feedback types of the parameters in the CSI reporting mode corresponding to each target CSI process may match, and the matching may refer to the feedback. The same type or similar.
  • the CSI reporting mode corresponding to the first target CSI process is a feedback broadband PMI and a broadband CQI
  • the CSI reporting mode corresponding to the second target CSI process is a feedback broadband PMI and a broadband CQI, and a sub-band CQI, corresponding to the two target CSI processes.
  • the CSI reporting mode includes the reporting of the wideband PMI and the wideband CQI, and is therefore considered to be a similar CSI reporting mode.
  • the CSI reporting mode corresponding to the first target CSI process is to report the broadband PMI and the wideband CQI, and the second target CSI process.
  • the corresponding CSI reporting mode is to report the broadband PMI and the wideband CQI, and the feedback types of the parameters in the CSI reporting mode corresponding to the two target CSI processes are exactly the same.
  • the CSI process may associate at least one set of measurement reference signal resources.
  • the base station determines, according to the second notification message, that the CSI reporting mode of the other CSI process is the second granularity CSI reporting mode, and the second granularity CSI reporting mode refers to reporting the CSI by using the time domain and/or the frequency domain resource granularity greater than or equal to the threshold.
  • Other CSI processes refer to CSI processes other than the target CSI process in the N CSI processes.
  • the terminal selects the best T CSI processes as the target CSI process in the P CSI processes.
  • the CSI processes correspond to a first-granular CSI reporting mode
  • the other PT CSI processes correspond to the second-granular CSI reporting mode.
  • the second notification message when the second notification message is notified of the CSI reporting mode corresponding to the other CSI processes, the second notification message may be specifically notified by using a specified bit in the second notification message, for example, by using a 1-bit RTI to indicate the current CSI reporting.
  • the CSI reporting mode adopted. When the RTI is "0", the CSI reporting mode corresponding to the other CSI processes is the second granularity CSI reporting mode. Of course, if the RTI is "1", the CSI reporting mode corresponding to the other CSI processes is the second granularity CSI.
  • the reporting mode can also be described by two or more bits, which are not specifically limited herein.
  • the CSI reporting mode fed back by the terminal may be based on channel quality measurement results.
  • the CSI reporting mode of the first two CSI processes configured by the base station is the second granular CSI reporting mode, and the CSI reporting mode of the latter two CSI processes is the first granular CSI reporting mode.
  • the selected T best CSI processes are the first two CSI processes in the four processes
  • the terminal can set the CSI reporting mode of the first two CSI processes to the PUCCH reporting mode 2-1, and the CSI reporting mode of the last two CSI processes is the PUCCH reporting mode 1-1, and the terminal indicates the four by using the first notification message.
  • the CSI reporting mode corresponding to the CSI process is
  • the terminal may further indicate the CSI reporting mode corresponding to the last two CSI processes by using the 1-bit RTI.
  • the RTI can be jointly coded with the RI in the CSI to form a new type of CSI report, and then reported by the terminal to the base station through the PUCCH.
  • the RTI may be separately encoded and reported to the base station by the terminal through the PUCCH.
  • the target CSI process includes the first CSI process and the second CSI process
  • the first CSI process is associated with the first reference signal resource
  • the second CSI process is associated with the second reference signal resource
  • the method further includes the following operations:
  • the base station receives the third notification message, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process, and the CSI reporting mode corresponding to the second CSI process is based on the channel quality measurement result corresponding to the first CSI process.
  • the channel quality measurement result corresponding to the two CSI processes is determined.
  • the target CSI process includes the first CSI process and the second CSI process
  • the first CSI process is associated with the first reference signal resource
  • the second CSI process is associated with the second reference signal resource, according to the first CSI
  • the channel quality measurement result corresponding to the process and the channel quality measurement result corresponding to the second CSI process are comprehensively used to comprehensively determine the current CSI reporting mode, for example, when the terminal finds that the current channel quality measurement result is not better than the reference corresponding to the first CSI process.
  • the terminal may not report the CSI corresponding to the second CSI process, otherwise, the terminal determines the CSI reporting mode corresponding to the second CSI process, and sends the second CSI process corresponding to the determined CSI reporting mode.
  • the CSI reporting mode corresponding to the second CSI process is a differential feedback mode
  • the differential feedback mode is the difference between the CSI reported by the second CSI process and the CSI reported by the first CSI process. Reporting mode.
  • the CSI reported at the current time may be a differential feedback of the CSI reporting result corresponding to the reference signal resource corresponding to the first CSI process.
  • the terminal only reports the difference between the CQI measured at the current time and the CQI corresponding to the first CSI process measured at the previous time.
  • the PMI measured at the current time can also be reported at the same time.
  • the PMI measured at the current time may be a PMI after the codebook subset is restricted based on the CSI corresponding to the first CSI process measured at the previous time.
  • the number of reference signal resources associated with each CSI process may be dynamic or semi-statically variable, and even the number of antenna ports corresponding to each reference signal resource may be dynamic or half.
  • Statically variable The number of antenna ports corresponding to different reference signal resources may be different.
  • the base station further receives a third notification message sent by the terminal, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process.
  • a terminal in the embodiment of the present invention, includes a processing unit 40 and a sending unit 41, where:
  • the processing unit 40 is configured to select a target CSI process from the N channel state information CSI processes
  • the processing unit 40 is further configured to: set a CSI reporting mode corresponding to the target CSI process;
  • the sending unit 41 is configured to send the CSI corresponding to the CSI process according to the CSI reporting mode.
  • the CSI reporting mode corresponding to the target CSI process is a first-level CSI reporting mode
  • the first-granular CSI reporting mode refers to performing CSI by using a time domain and/or a frequency domain resource granularity smaller than a threshold. Reported.
  • the sending unit 41 is further configured to send a first notification message to the base station, where the first notification message is used to notify the base station of the CSI reporting mode corresponding to the target CSI process.
  • the processing unit 40 is further configured to: determine that the CSI reporting mode of the other CSI process is the second granularity CSI reporting mode, and the second granularity CSI reporting mode refers to adopting the time domain greater than or equal to the threshold.
  • the CSI is reported in the frequency domain resource granularity.
  • the other CSI processes refer to the CSI processes except the target CSI process in the N CSI processes.
  • the processing unit 40 is further configured to: determine a CSI reporting mode corresponding to another CSI process;
  • the sending unit 41 is further configured to send a second notification message to the base station, where the second notification message is used to notify the base station of a CSI reporting mode corresponding to other CSI processes.
  • the processing unit 40 selects a target CSI process from the N channel state information CSI processes, specifically:
  • the target CSI process is selected from the N CSI processes according to the channel quality measurement results corresponding to the N CSI processes respectively.
  • the target CSI process includes the first CSI process and the second CSI process
  • the first CSI process is associated with the first reference signal resource
  • the second CSI process is associated with the second reference signal resource
  • the processing unit 40 determines the CSI reporting mode corresponding to the target CSI process, specifically:
  • the processing unit 40 determines, according to the channel quality measurement result corresponding to the first CSI process and the channel quality measurement result corresponding to the second CSI process, the CSI reporting mode corresponding to the second CSI process. Specifically:
  • the differential feedback mode is used as a CSI reporting mode corresponding to the second CSI process
  • the differential feedback mode refers to a reporting mode in which the CSI corresponding to the second CSI process is reported as the difference reported by the CSI corresponding to the first CSI process.
  • the sending unit 41 is further configured to send a third notification message to the base station, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process.
  • a terminal in the embodiment of the present invention, includes a processor 400 and a transmitter 410, where:
  • the processor 400 is configured to select a target CSI process from the N channel state information CSI processes.
  • the processor 400 is further configured to: set a CSI reporting mode corresponding to the target CSI process;
  • the transmitter 410 is configured to send a CSI corresponding to the CSI process according to the CSI reporting mode.
  • processor 400 is further configured to perform other operations performed by the processing unit 40
  • transmitter 410 is further configured to perform other operations performed by the sending unit 41.
  • a base station in the embodiment of the present invention, includes a receiving unit 50 and a processing unit 51, where:
  • the receiving unit 50 is configured to receive a first notification message sent by the terminal.
  • the processing unit 51 is configured to determine, according to the first notification message, a CSI reporting mode corresponding to the target CSI process, where the N CSI processes include a target CSI process.
  • the CSI reporting mode corresponding to the target CSI process is a first-level CSI reporting mode
  • the first-level CSI reporting mode refers to performing CSI reporting by using a time domain and/or a frequency domain resource granularity smaller than a threshold.
  • the receiving unit 50 is further configured to receive the second notification message.
  • the processing unit 51 is further configured to: determine, according to the second notification message, that the CSI reporting mode of the other CSI process is the second granular CSI reporting mode, where the second granular CSI reporting mode refers to adopting the time domain and/or the frequency domain resource that is greater than or equal to the threshold.
  • the CSI is reported in the granularity.
  • the other CSI processes refer to the CSI processes except the target CSI process in the N CSI processes.
  • the target CSI process includes the first CSI process and the second CSI process
  • the first CSI process is associated with the first reference signal resource
  • the second CSI process is associated with the second reference signal resource
  • the receiving unit 50 is further configured to receive a third notification message, where the third notification message is used to notify the base station of the CSI reporting mode corresponding to the second CSI process, and the CSI reporting mode corresponding to the second CSI process is based on the channel corresponding to the first CSI process.
  • the quality measurement result is determined by the channel quality measurement result corresponding to the second CSI process.
  • the CSI reporting mode corresponding to the second CSI process is a differential feedback mode
  • the differential feedback mode is a reporting mode in which the CSI reported by the second CSI process is reported as a difference reported by the CSI corresponding to the first CSI process.
  • a base station in the embodiment of the present invention, includes a receiver 500 and a processor 510, where:
  • the receiver 500 is configured to receive a first notification message sent by the terminal.
  • the processor 510 is configured to determine, according to the first notification message, a CSI reporting mode corresponding to the target CSI process, where the N CSI processes include a target CSI process.
  • receiver 500 is also used to perform other operations performed by the receiving unit 50, and the processor 510 is further configured to perform other operations performed by the processing unit 51.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明实施例中，提出一种发送或者接收CSI的方法、终端及基站，终端从N个信道状态信息CSI进程中选择出目标CSI进程；所述终端设置所述目标CSI进程对应的CSI上报模式，并根据所述CSI上报模式发送与所述CSI进程对应的CSI，在该方案中，终端本身可以设置CSI进程对应的CSI上报模式，并根据设置的CSI上报模式发送与CSI进程对应的CSI，而现有技术中只是基站来配置每一个CSI进程对应的CSI上报模式，因此，提高了灵活性。

Description

一种发送或者接收信道状态信息CSI的方法、终端及基站 技术领域
本发明涉及通信技术领域，尤其涉及一种发送或者接收CSI(Channel State Information，信道状态信息)的方法、终端及基站。
背景技术
为了提高***容量和保证小区的覆盖，MIMO(Multiple-Input Multiple-Output，多输入多输出)技术被广泛地应用在无线通信***，如LTE(Long Term Evolution，长期演进)***的下行采用了基于多天线的发送分集，开环/闭环的空分复用和基于DM-RS的多流传输。
基于DM-RS(Demodulation Reference Signal，解调参考信号)的多流传输的主要过程如下：
步骤1：基站向终端发送配置信息；
步骤2：终端根据基站发送的配置信息进行信道测量，并把测量得到的CSI反馈给基站；
步骤3：基站根据终端反馈的CSI进行下行调度，并根据调度结果把PDSCH通过DM-RS发送给终端。
目前，基于DM-RS的多流传输都是二维的波束赋形，即发送天线都是水平放置，只能产生水平方向的波束，如图1所示。为了进一步提高多天线***的性能，三维波束赋形技术应用而生。三维波束赋形相对于目前的二维波束赋形，增加了一个垂直方向上的自由度，那么在同样的时频资源上可以复用更多的终端，不同的终端通过垂直或水平方向上的波束来区分，进而可以提高资源的利用率或频谱效率。
无论二维波束赋形还是三维波束赋形，基站通常需为每个终端配置多套作用了预编码矩阵的测量参考信号资源，以使得终端通过对多套参考信号资源的测量得到最优的一套测量参考信号资源。为便于基站对不同终端的测量 参考信号资源对应的预编码矩阵进行管理和协调，终端可选择出多套测量参考信号资源，并将与多套测量参考信号资源对应的CSI均上报给基站。
但是，目前针对每一套测量参考信号资源的CSI的上报模式都是基站配置的，这样存在由于候选测量参考信号资源太多导致所需要的CSI上报开销太大和灵活性较差的缺陷。
发明内容
本发明实施例提供了一种发送或者接收CSI的方法、终端及基站，用于解决现有技术中存在的灵活性较差的缺陷。
第一方面，提供一种发送信道状态信息CSI的方法，包括：
终端从N个信道状态信息CSI进程中选择出目标CSI进程；
所述终端设置所述目标CSI进程对应的CSI上报模式，并根据所述CSI上报模式发送与所述CSI进程对应的CSI。
结合第一方面，在第一种可能的实现方式中，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
结合第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述终端确定所述目标CSI进程对应的CSI上报模式之后，根据所述CSI上报模式发送与所述CSI进程对应的CSI之前，还包括：
所述终端向基站发送第一通知消息，所述第一通知消息用于通知所述基站与所述目标CSI进程对应的CSI上报模式。
结合第一方面，或者第一方面的第一种至第二种可能的实现方式，在第三种可能的实现方式中，所述方法还包括：
所述终端确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
结合第一方面的第三种可能的实现方式，在第四种可能的实现方式中，所述方法还包括：
所述终端确定所述其他CSI进程对应的CSI上报模式；
所述终端向基站发送第二通知消息，所述第二通知消息用于通知基站与所述其他CSI进程对应的CSI上报模式。
结合第一方面，或者第一方面的第一种至第四种可能的实现方式，在第五种可能的实现方式中，终端从N个信道状态信息CSI进程中选择出目标CSI进程，包括：
针对所述N个CSI进程中的任意一CSI进程，所述终端基于与所述任意一CSI进程相对应的参考信号资源进行信道质量测量，得到与所述任意一CSI进程对应的信道质量测量结果；
所述终端根据与所述N个CSI进程分别对应的信道质量测量结果，从所述N个CSI进程中选择出目标CSI进程。
结合第一方面，或者第一方面的第一种至第五种可能的实现方式，在第六种可能的实现方式中，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；
所述终端确定所述目标CSI进程对应的CSI上报模式，包括：
所述终端根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式。
结合第一方面的第六种可能的实现方式，在第七种可能的实现方式中，所述终端根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式，包括：
所述终端根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，将差分反馈模式作为所述第二CSI进 程对应的CSI上报模式；
所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
结合第一方面的第五种或者第六种可能的实现方式，在第八种可能的实现方式中，包括：
终端向基站发送第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式。
第二方面，提供一种接收信道状态信息CSI的方法，包括：
基站接收终端发送的第一通知消息；
所述基站根据所述第一通知消息确定目标CSI进程对应的CSI上报模式，N个CSI进程包括所述目标CSI进程。
结合第二方面，在第一种可能的实现方式中，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
结合第二方面，或者第二方面的第一种可能的实现方式，在第二种可能的实现方式中，所述方法还包括：
所述基站接收第二通知消息；
所述基站根据所述第二通知消息确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
结合第二方面，或者第二方面的第一种至第二种可能的实现方式，在第三种可能的实现方式中，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；所述方法还包括：
所述基站接收第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式，所述第二CSI进程对应的CSI上报模式 是根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果确定的。
结合第二方面的第三种可能的实现方式，在第四种可能的实现方式中，所述第二CSI进程对应的CSI上报模式为差分反馈模式，所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
第三方面，提供一种终端，包括：
处理单元，用于从N个信道状态信息CSI进程中选择出目标CSI进程；
所述处理单元还用于，设置所述目标CSI进程对应的CSI上报模式；
发送单元，用于根据所述CSI上报模式发送与所述CSI进程对应的CSI。
结合第三方面，在第一种可能的实现方式中，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
结合第三方面的第一种可能的实现方式，在第二种可能的实现方式中，所述发送单元还用于，向基站发送第一通知消息，所述第一通知消息用于通知所述基站与所述目标CSI进程对应的CSI上报模式。
结合第三方面，或者第三方面的第一种至第二种可能的实现方式，在第三种可能的实现方式中，所述处理单元还用于，确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
结合第三方面的第三种可能的实现方式，在第四种可能的实现方式中，所述处理单元还用于，确定所述其他CSI进程对应的CSI上报模式；
所述发送单元还用于，向基站发送第二通知消息，所述第二通知消息用于通知基站与所述其他CSI进程对应的CSI上报模式。
结合第三方面，或者第三方面的第一种至第四种可能的实现方式，在第五种可能的实现方式中，所述处理单元从N个信道状态信息CSI进程中选择 出目标CSI进程时，具体为：
针对所述N个CSI进程中的任意一CSI进程，基于与所述任意一CSI进程相对应的参考信号资源进行信道质量测量，得到与所述任意一CSI进程对应的信道质量测量结果；
根据与所述N个CSI进程分别对应的信道质量测量结果，从所述N个CSI进程中选择出目标CSI进程。
结合第三方面，或者第三方面的第一种至第五种可能的实现方式，在第六种可能的实现方式中，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；
所述处理单元确定所述目标CSI进程对应的CSI上报模式时，具体为：
根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式。
结合第三方面的第六种可能的实现方式，在第七种可能的实现方式中，所述处理单元根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式时，具体为：
根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，将差分反馈模式作为所述第二CSI进程对应的CSI上报模式；
所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
结合第三方面的第五种或者第六种可能的实现方式，在第八种可能的实现方式中，所述发送单元还用于，向基站发送第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式。
第四方面，提供一种基站，包括：
接收单元，用于接收终端发送的第一通知消息；
处理单元，用于根据所述第一通知消息确定目标CSI进程对应的CSI上报模式，N个CSI进程包括所述目标CSI进程。
结合第四方面，在第一种可能的实现方式中，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
结合第四方面，或者第四方面的第一种可能的实现方式，在第二种可能的实现方式中，所述接收单元还用于，接收第二通知消息；
所述处理单元还用于，根据所述第二通知消息确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
结合第四方面，或者第四方面的第一种至第二种可能的实现方式，在第三种可能的实现方式中，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；
所述接收单元还用于，接收第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式，所述第二CSI进程对应的CSI上报模式是根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果确定的。
结合第四方面的第三种可能的实现方式，在第四种可能的实现方式中，所述第二CSI进程对应的CSI上报模式为差分反馈模式，所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
本发明实施例中，提出一种发送或者接收CSI的方法，终端从N个信道状态信息CSI进程中选择出目标CSI进程；所述终端设置所述目标CSI进程对应的CSI上报模式，并根据所述CSI上报模式发送与所述CSI进程对应的CSI， 在该方案中，终端本身可以设置CSI进程对应的CSI上报模式，并根据设置的CSI上报模式发送与CSI进程对应的CSI，而现有技术中只是基站来配置每一个CSI进程对应的CSI上报模式，因此，提高了灵活性。
附图说明
图1为现有技术提供的二维波束赋形示意图；
图2为本发明实施例提供的发送CSI的一种流程图；
图3为本发明实施例提供的接收CSI的另一种流程图；
图4A为本发明实施例提供的终端的一种功能结构示意图；
图4B为本发明实施例提供的终端的另一种功能结构示意图；
图5A为本发明实施例提供的基站的一种功能结构示意图；
图5B为本发明实施例提供的基站的另一种功能结构示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
下面结合说明书附图对本发明优选的实施方式进行详细说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明，并且在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
下面结合附图对本发明实施例进行详细说明。
下面所描述的技术方案适用于无线通信***，例如，LTE(Long Term Evolution，长期演进)***，WCDMA(Wide-band Code Division Multiple Access，宽带码分多址接入)***等。
参阅图2所示，本发明实施例中，一种发送CSI的流程如下：
步骤200：终端从N个信道状态信息CSI进程中选择出目标CSI进程；
步骤210：终端设置目标CSI进程对应的CSI上报模式，并根据CSI上报模式发送与CSI进程对应的CSI。
本发明实施例中，终端从N个信道状态信息CSI进程中选择出目标CSI进程；终端设置目标CSI进程对应的CSI上报模式，并根据CSI上报模式发送与CSI进程对应的CSI，在该方案中，终端本身可以设置CSI进程对应的CSI上报模式，并根据设置的CSI上报模式发送与CSI进程对应的CSI，而现有技术中只是基站来配置每一个CSI进程对应的CSI上报模式，因此，提高了灵活性。
为了降低资源开销，提高资源的利用率，本发明实施例中，可选的，目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
进一步的，终端确定目标CSI进程对应的CSI上报模式之后，根据CSI上报模式发送与CSI进程对应的CSI之前，还包括如下操作：
终端向基站发送第一通知消息，第一通知消息用于通知基站与目标CSI进程对应的CSI上报模式。
需要说明的是，第一通知消息在通知与目标CSI进程对应的CSI上报模式时，具体可以通过在第一通知消息中的指定比特位来进行通知，例如，通过1bit的RTI(Report Type Indication，报告类型指示)来指示本次CSI上报所采用的CSI上报模式。RTI为“0”时，说明目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，当然，也可以是RTI为“1”时，说明目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，当然，也可以用两个或者多个比特位来进行说明，在此不做具体限定。
本发明实施例中，如果目标CSI进程有多个时，各个目标CSI进程所对应的CSI上报模式中的各个参数的反馈类型可以相匹配，相匹配可以指反馈类型相同或者相近。
例如，第一目标CSI进程对应的CSI上报模式为反馈宽带PMI和宽带 CQI，第二目标CSI进程对应的CSI上报模式为反馈宽带PMI，子带CQI和宽带CQI，两个目标CSI进程所对应的CSI上报模式中均包含了宽带PMI和宽带CQI的上报，因此被认为是相近的CSI上报模式；或者，第一目标CSI进程对应的CSI上报模式为上报宽带PMI和宽带CQI，第二目标CSI进程对应的CSI上报模式为上报宽带PMI和宽带CQI，两个目标CSI进程所对应的CSI上报模式中的各个参数的反馈类型完全相同。
本发明实施例中，可选的，CSI进程可关联至少一套测量参考信号资源。
本发明实施例中，为了降低上报CSI的开销，提高资源的利用率，还包括如下操作：
终端确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，其他CSI进程是指N个CSI进程中除去目标CSI进程之外的CSI进程。
本发明实施例中，进一步的，还包括如下操作：
终端确定其他CSI进程对应的CSI上报模式；
终端向基站发送第二通知消息，第二通知消息用于通知基站与其他CSI进程对应的CSI上报模式。
例如，当终端上报的CSI数量较大时，终端的反馈开销也将很大，为减少终端上报CSI的开销，终端在P个CSI进程中选择最好的T个CSI进程作为目标CSI进程，T个CSI进程对应一个第一粒度CSI上报模式，而其他P-T个CSI进程对应第二粒度CSI上报模式。
需要说明的是，第二通知消息在通知与其他CSI进程对应的CSI上报模式时，具体可以通过第二通知消息中指定比特位的来进行通知，例如，通过1bit的RTI来指示本次CSI上报所采用的CSI上报模式。RTI为“0”时，说明其他CSI进程对应的CSI上报模式为第二粒度CSI上报模式，当然，也可以是RTI为“1”时，说明其他CSI进程对应的CSI上报模式为第二粒度CSI上报模式，当然，也可以用两个或者多个比特位来进行说明，在此不做具体限定。
本发明实施例中，终端反馈的CSI上报模式可以根据信道质量测量结果进行自适应变化，如假定CSI进程数目P＝4时，基站可配置前两个CSI进程的CSI上报模式均为PUCCH上报模式1-1，而后两个CSI进程的CSI上报模式均为PUCCH上报模式2-1.即前两个CSI进程对应的CSI上报模式为宽带PMI，宽带CQI，而后两个CSI进程对应的CSI上报模式为宽带PMI，子带CQI+宽带CQI。基站配置的前两个CSI进程的CSI上报模式为第二粒度CSI上报模式，而后两个CSI进程的CSI上报模式为第一粒度CSI上报模式。
如果基于对P＝4个CSI进程对应的信道质量测量结果选择T＝2个最好的CSI进程，如选择的T个最好的CSI进程为4个进程中的前两个CSI进程时，则终端可设置前两个CSI进程的CSI上报模式为PUCCH上报模式2-1，而后两个CSI进程的的CSI上报模式为PUCCH上报模式1-1，终端通过第一通知消息来指示所述4个CSI进程分别对应的CSI上报模式。
终端的第一通知消息中通过1bit的RTI来指示前两个CSI进程对应的CSI上报模式时，可选地，终端可进一步通过1bit的RTI来指示后两个CSI进程对应的CSI上报模式。
本发明实施例中，RTI可以和CSI中的RI进行联合编码形成一种新的CSI上报类型，然后由终端通过PUCCH上报给基站。或者，RTI也可单独编码后由终端通过PUCCH上报给基站。
本发明实施例中，终端从N个信道状态信息CSI进程中选择出目标CSI进程时，可选的，可以采用如下方式：
针对N个CSI进程中的任意一CSI进程，终端基于与任意一CSI进程相对应的参考信号资源进行信道质量测量，得到与任意一CSI进程对应的信道质量测量结果；
终端根据与N个CSI进程分别对应的信道质量测量结果，从N个CSI进程中选择出目标CSI进程。
本发明实施例中，可选的，若目标CSI进程包括第一CSI进程和第二CSI进程，第一CSI进程与第一参考信号资源相关联，第二CSI进程与第二参考 信号资源相关联；
进一步的，为了降低终端反馈CSI的开销，提高资源利用率，终端确定目标CSI进程对应的CSI上报模式时，可选的，可以采用如下方式：
终端根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果，确定第二CSI进程对应的CSI上报模式。
若目标CSI进程包括第一CSI进程和第二CSI进程，第一CSI进程与第一参考信号资源相关联，第二CSI进程与第二参考信号资源相关联时，根据第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果，综合来综合决定当前的CSI上报模式，如当终端发现当前的信道质量测量结果不优于第一CSI进程对应的参考信号资源的信道质量测量结果时，，终端可不上报第二CSI进程对应的CSI，否则，终端确定第二CSI进程对应的CSI上报模式，并采用所述确定的CSI上报模式上报第二CSI进程对应的CSI。
本发明实施例中，终端根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果，确定第二CSI进程对应的CSI上报模式时，可选的，可以采用如下方式：
终端根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果，将差分反馈模式作为第二CSI进程对应的CSI上报模式；
差分反馈模式是指第二CSI进程对应的CSI上报为与第一CSI进程对应的CSI上报的差值的上报模式。
也就是说，可选地，当前时刻上报的CSI可以是第一CSI进程对应的参考信号资源对应的CSI的上报结果的差分反馈。如终端只上报当前时刻测量的CQI与之前时刻测量的第一CSI进程对应的CQI的差分值，进一步的，还可以同时上报当前时刻测量的PMI。其中，当前时刻测量的PMI可以为基于之前时刻测量得到的第一CSI进程对应的CSI进行码本子集限制后的PMI。
本发明实施例中，可选地，每个CSI进程关联的参考信号资源个数可以是动态或半静态可变的，甚至关联的每个参考信号资源对应的天线端口数也 可以是动态或半静态可变的。且不同参考信号资源对应的天线端口数可以不同。
进一步的，本发明实施例中，还包括如下操作：
终端向基站发送第三通知消息，第三通知消息用于通知基站第二CSI进程对应的CSI上报模式。
参阅图3所示，本发明实施例中，一种接收CSI的流程如下：
步骤300：基站接收终端发送的第一通知消息；
步骤310：基站根据第一通知消息确定目标CSI进程对应的CSI上报模式，N个CSI进程包括目标CSI进程。
本发明实施例中，终端从N个信道状态信息CSI进程中选择出目标CSI进程；终端设置目标CSI进程对应的CSI上报模式，并根据CSI上报模式发送与CSI进程对应的CSI，在该方案中，终端本身可以设置CSI进程对应的CSI上报模式，并根据设置的CSI上报模式发送与CSI进程对应的CSI，而现有技术中只是基站来配置每一个CSI进程对应的CSI上报模式，因此，提高了灵活性。
为了降低资源开销，提高资源的利用率，本发明实施例中，可选的，目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
需要说明的是，第一通知消息在通知与目标CSI进程对应的CSI上报模式时，具体可以通过在第一通知消息中的指定比特位来进行通知，例如，通过1bit的RTI(Report Type Indication，报告类型指示)来指示本次CSI上报所采用的CSI上报模式。RTI为“0”时，说明目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，当然，也可以是RTI为“1”时，说明目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，当然，也可以用两个或者多个比特位来进行说明，在此不做具体限定。
本发明实施例中，如果目标CSI进程有多个时，各个目标CSI进程所对应的CSI上报模式中的各个参数的反馈类型可以相匹配，相匹配可以指反馈 类型相同或者相近。
例如，第一目标CSI进程对应的CSI上报模式为反馈宽带PMI和宽带CQI，第二目标CSI进程对应的CSI上报模式为反馈宽带PMI和宽带CQI，及子带CQI，两个目标CSI进程所对应的CSI上报模式中均包含了宽带PMI和宽带CQI的上报，因此认为是相近的CSI上报模式；或者，第一目标CSI进程对应的CSI上报模式为上报宽带PMI和宽带CQI，第二目标CSI进程对应的CSI上报模式为上报宽带PMI和宽带CQI，两个目标CSI进程所对应的CSI上报模式中的各个参数的反馈类型完全相同。
本发明实施例中，可选的，CSI进程可关联至少一套测量参考信号资源。
本发明实施例中，为了降低上报CSI的开销，提高资源的利用率，还可以包括如下操作：
基站接收第二通知消息；
基站根据第二通知消息确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，其他CSI进程是指N个CSI进程中除去目标CSI进程之外的CSI进程。
例如，当终端上报的CSI数量较大时，终端的反馈开销也将很大，为减少终端上报CSI的开销，终端在P个CSI进程中选择最好的T个CSI进程作为目标CSI进程，T个CSI进程对应一个第一粒度CSI上报模式，而其他P-T个CSI进程对应第二粒度CSI上报模式。
需要说明的是，第二通知消息在通知与其他CSI进程对应的CSI上报模式时，具体可以通过第二通知消息中指定比特位的来进行通知，例如，通过1bit的RTI来指示本次CSI上报所采用的CSI上报模式。RTI为“0”时，说明其他CSI进程对应的CSI上报模式为第二粒度CSI上报模式，当然，也可以是RTI为“1”时，说明其他CSI进程对应的CSI上报模式为第二粒度CSI上报模式，当然，也可以用两个或者多个比特位来进行说明，在此不做具体限定。
本发明实施例中，终端反馈的CSI上报模式可以根据信道质量测量结果 进行自适应变化，如假定CSI进程数目P＝4时，基站可配置前两个CSI进程的CSI上报模式均为PUCCH上报模式1-1，而后两个CSI进程的CSI上报模式均为PUCCH上报模式2-1.即前两个CSI进程对应的CSI上报模式为宽带PMI，宽带CQI，而后两个CSI进程对应的CSI上报模式为宽带PMI，子带CQI+宽带CQI。基站配置的前两个CSI进程的CSI上报模式为第二粒度CSI上报模式，而后两个CSI进程的CSI上报模式为第一粒度CSI上报模式。
如果基于对P＝4个CSI进程对应的信道质量测量结果选择T＝2个最好的CSI进程，如选择的T个最好的CSI进程为4个进程中的前两个CSI进程时，则终端可设置前两个CSI进程的CSI上报模式为PUCCH上报模式2-1，而后两个CSI进程的的CSI上报模式为PUCCH上报模式1-1，终端通过第一通知消息来指示所述4个CSI进程分别对应的CSI上报模式。
终端的第一通知消息中通过1bit的RTI来指示前两个CSI进程对应的CSI上报模式时，可选的，终端可进一步通过1bit的RTI来指示后两个CSI进程对应的CSI上报模式。
本发明实施例中，RTI可以和CSI中的RI进行联合编码形成一种新的CSI上报类型，然后由终端通过PUCCH上报给基站。或者，RTI也可单独编码后由终端通过PUCCH上报给基站。
本发明实施例中，可选的，若目标CSI进程包括第一CSI进程和第二CSI进程，第一CSI进程与第一参考信号资源相关联，第二CSI进程与第二参考信号资源相关联；
进一步的，为了降低终端反馈CSI的开销，提高资源利用率，本发明实施例中，方法还包括如下操作：
基站接收第三通知消息，第三通知消息用于通知基站第二CSI进程对应的CSI上报模式，第二CSI进程对应的CSI上报模式是根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果确定的。
若目标CSI进程包括第一CSI进程和第二CSI进程，第一CSI进程与第一参考信号资源相关联，第二CSI进程与第二参考信号资源相关联时，根据第一CSI 进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果，综合来综合决定当前的CSI上报模式，如当终端发现当前的信道质量测量结果不优于第一CSI进程对应的参考信号资源的信道质量测量结果时，终端可不上报第二CSI进程对应的CSI，否则，终端确定第二CSI进程对应的CSI上报模式，并采用所述确定的CSI上报模式发送第二CSI进程对应的CSI。
本发明实施例中，可选的，第二CSI进程对应的CSI上报模式为差分反馈模式，差分反馈模式是指第二CSI进程对应的CSI上报为与第一CSI进程对应的CSI上报的差值的上报模式。
也就是说，可选地，当前时刻上报的CSI可以是第一CSI进程对应的参考信号资源对应的CSI的上报结果的差分反馈。如终端只上报当前时刻测量的CQI与之前时刻测量的第一CSI进程对应的CQI的差分值，进一步的，还可以同时上报当前时刻测量的PMI。其中，当前时刻测量的PMI可以为基于之前时刻测量得到的第一CSI进程对应的CSI进行码本子集限制后的PMI。
本发明实施例中，可选地，每个CSI进程关联的参考信号资源个数可以是动态或半静态可变的，甚至关联的每个参考信号资源对应的天线端口数也可以是动态或半静态可变的。且不同参考信号资源对应的天线端口数可以不同。
本发明实施例中，进一步的，基站还接收终端发送的第三通知消息，第三通知消息用于通知基站第二CSI进程对应的CSI上报模式。
参阅图4A所示，本发明实施例中，提出一种终端，该终端包括处理单元40和发送单元41，其中：
处理单元40，用于从N个信道状态信息CSI进程中选择出目标CSI进程；
处理单元40还用于，设置目标CSI进程对应的CSI上报模式；
发送单元41，用于根据CSI上报模式发送与CSI进程对应的CSI。
本发明实施例中，可选的，目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
本发明实施例中，进一步的，发送单元41还用于，向基站发送第一通知消息，第一通知消息用于通知基站与目标CSI进程对应的CSI上报模式。
本发明实施例中，进一步的，处理单元40还用于，确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，其他CSI进程是指N个CSI进程中除去目标CSI进程之外的CSI进程。
本发明实施例中，进一步的，处理单元40还用于，确定其他CSI进程对应的CSI上报模式；
发送单元41还用于，向基站发送第二通知消息，第二通知消息用于通知基站与其他CSI进程对应的CSI上报模式。
本发明实施例中，可选的，处理单元40从N个信道状态信息CSI进程中选择出目标CSI进程时，具体为：
针对N个CSI进程中的任意一CSI进程，基于与任意一CSI进程相对应的参考信号资源进行信道质量测量，得到与任意一CSI进程对应的信道质量测量结果；
根据与N个CSI进程分别对应的信道质量测量结果，从N个CSI进程中选择出目标CSI进程。
本发明实施例中，可选的，若目标CSI进程包括第一CSI进程和第二CSI进程，第一CSI进程与第一参考信号资源相关联，第二CSI进程与第二参考信号资源相关联；
处理单元40确定目标CSI进程对应的CSI上报模式时，具体为：
根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果，确定第二CSI进程对应的CSI上报模式。
本发明实施例中，可选的，处理单元40根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果，确定第二CSI进程对应的CSI上报模式时，具体为：
根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的 信道质量测量结果，将差分反馈模式作为第二CSI进程对应的CSI上报模式；
差分反馈模式是指第二CSI进程对应的CSI上报为与第一CSI进程对应的CSI上报的差值的上报模式。
本发明实施例中，进一步的，发送单元41还用于，向基站发送第三通知消息，第三通知消息用于通知基站第二CSI进程对应的CSI上报模式。
参阅图4B所示，本发明实施例中，提出一种终端，该终端包括处理器400和发送器410，其中：
处理器400，用于从N个信道状态信息CSI进程中选择出目标CSI进程；
处理器400还用于，设置目标CSI进程对应的CSI上报模式；
发送器410，用于根据CSI上报模式发送与CSI进程对应的CSI。
需要说明的是，处理器400还用于执行处理单元40所执行的其他操作，发送器410还用于执行发送单元41所执行的其他操作。
参阅图5A所示，本发明实施例中，提出一种基站，该基站包括接收单元50和处理单元51，其中：
接收单元50，用于接收终端发送的第一通知消息；
处理单元51，用于根据第一通知消息确定目标CSI进程对应的CSI上报模式，N个CSI进程包括目标CSI进程。
可选的，目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
进一步的，接收单元50还用于，接收第二通知消息；
处理单元51还用于，根据第二通知消息确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，其他CSI进程是指N个CSI进程中除去目标CSI进程之外的CSI进程。
可选的，若目标CSI进程包括第一CSI进程和第二CSI进程，第一CSI进程与第一参考信号资源相关联，第二CSI进程与第二参考信号资源相关联；
接收单元50还用于，接收第三通知消息，第三通知消息用于通知基站第二CSI进程对应的CSI上报模式，第二CSI进程对应的CSI上报模式是根据与第一CSI进程对应的信道质量测量结果、与第二CSI进程对应的信道质量测量结果确定的。
可选的，第二CSI进程对应的CSI上报模式为差分反馈模式，差分反馈模式是指第二CSI进程对应的CSI上报为与第一CSI进程对应的CSI上报的差值的上报模式。
参阅图5B所示，本发明实施例中，提出一种基站，该基站包括接收器500和处理器510，其中：
接收器500，用于接收终端发送的第一通知消息；
处理器510，用于根据第一通知消息确定目标CSI进程对应的CSI上报模式，N个CSI进程包括目标CSI进程。
需要说明的是，接收器500还用于执行接收单元50所执行的其他操作，处理器510还用于执行处理单元51所执行的其他操作。
本领域内的技术人员应明白，本发明的实施例可提供为方法、***、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (28)

  1. 一种发送信道状态信息CSI的方法，其特征在于，包括：
    终端从N个信道状态信息CSI进程中选择出目标CSI进程；
    所述终端设置所述目标CSI进程对应的CSI上报模式，并根据所述CSI上报模式发送与所述CSI进程对应的CSI。
  2. 如权利要求1所述的方法，其特征在于，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
  3. 如权利要求2所述的方法，其特征在于，所述终端确定所述目标CSI进程对应的CSI上报模式之后，根据所述CSI上报模式发送与所述CSI进程对应的CSI之前，还包括：
    所述终端向基站发送第一通知消息，所述第一通知消息用于通知所述基站与所述目标CSI进程对应的CSI上报模式。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    所述终端确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
  5. 如权利要求4所述的方法，其特征在于，所述方法还包括：
    所述终端确定所述其他CSI进程对应的CSI上报模式；
    所述终端向基站发送第二通知消息，所述第二通知消息用于通知基站与所述其他CSI进程对应的CSI上报模式。
  6. 如权利要求1-5任一项所述的方法，其特征在于，终端从N个信道状态信息CSI进程中选择出目标CSI进程，包括：
    针对所述N个CSI进程中的任意一CSI进程，所述终端基于与所述任意一CSI进程相对应的参考信号资源进行信道质量测量，得到与所述任意一CSI 进程对应的信道质量测量结果；
    所述终端根据与所述N个CSI进程分别对应的信道质量测量结果，从所述N个CSI进程中选择出目标CSI进程。
  7. 如权利要求1-6任一项所述的方法，其特征在于，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；
    所述终端确定所述目标CSI进程对应的CSI上报模式，包括：
    所述终端根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式。
  8. 如权利要求7所述的方法，其特征在于，所述终端根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式，包括：
    所述终端根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，将差分反馈模式作为所述第二CSI进程对应的CSI上报模式；
    所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
  9. 如权利要求6或7所述的方法，其特征在于，包括：
    终端向基站发送第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式。
  10. 一种接收信道状态信息CSI的方法，其特征在于，包括：
    基站接收终端发送的第一通知消息；
    所述基站根据所述第一通知消息确定目标CSI进程对应的CSI上报模式，N个CSI进程包括所述目标CSI进程。
  11. 如权利要求10所述的方法，其特征在于，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采 用小于阈值的时域和/或频域资源粒度进行CSI的上报。
  12. 如权利要求10或11所述的方法，其特征在于，所述方法还包括：
    所述基站接收第二通知消息；
    所述基站根据所述第二通知消息确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
  13. 如权利要求10-12任一项所述的方法，其特征在于，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；所述方法还包括：
    所述基站接收第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式，所述第二CSI进程对应的CSI上报模式是根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果确定的。
  14. 如权利要求13所述的方法，其特征在于，所述第二CSI进程对应的CSI上报模式为差分反馈模式，所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
  15. 一种终端，其特征在于，包括：
    处理单元，用于从N个信道状态信息CSI进程中选择出目标CSI进程；
    所述处理单元还用于，设置所述目标CSI进程对应的CSI上报模式；
    发送单元，用于根据所述CSI上报模式发送与所述CSI进程对应的CSI。
  16. 如权利要求15所述的终端，其特征在于，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
  17. 如权利要求16所述的终端，其特征在于，所述发送单元还用于，向基站发送第一通知消息，所述第一通知消息用于通知所述基站与所述目标CSI 进程对应的CSI上报模式。
  18. 如权利要求15-17任一项所述的终端，其特征在于，所述处理单元还用于，确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
  19. 如权利要求18所述的终端，其特征在于，所述处理单元还用于，确定所述其他CSI进程对应的CSI上报模式；
    所述发送单元还用于，向基站发送第二通知消息，所述第二通知消息用于通知基站与所述其他CSI进程对应的CSI上报模式。
  20. 如权利要求15-19任一项所述的终端，其特征在于，所述处理单元从N个信道状态信息CSI进程中选择出目标CSI进程时，具体为：
    针对所述N个CSI进程中的任意一CSI进程，基于与所述任意一CSI进程相对应的参考信号资源进行信道质量测量，得到与所述任意一CSI进程对应的信道质量测量结果；
    根据与所述N个CSI进程分别对应的信道质量测量结果，从所述N个CSI进程中选择出目标CSI进程。
  21. 如权利要求15-20任一项所述的终端，其特征在于，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；
    所述处理单元确定所述目标CSI进程对应的CSI上报模式时，具体为：
    根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式。
  22. 如权利要求21所述的终端，其特征在于，所述处理单元根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果，确定所述第二CSI进程对应的CSI上报模式时，具体为：
    根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进 程对应的信道质量测量结果，将差分反馈模式作为所述第二CSI进程对应的CSI上报模式；
    所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
  23. 如权利要求20或21所述的终端，其特征在于，所述发送单元还用于，向基站发送第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式。
  24. 一种基站，其特征在于，包括：
    接收单元，用于接收终端发送的第一通知消息；
    处理单元，用于根据所述第一通知消息确定目标CSI进程对应的CSI上报模式，N个CSI进程包括所述目标CSI进程。
  25. 如权利要求24所述的基站，其特征在于，所述目标CSI进程对应的CSI上报模式为第一粒度CSI上报模式，所述第一粒度CSI上报模式是指采用小于阈值的时域和/或频域资源粒度进行CSI的上报。
  26. 如权利要求24或25所述的基站，其特征在于，所述接收单元还用于，接收第二通知消息；
    所述处理单元还用于，根据所述第二通知消息确定其他CSI进程的CSI上报模式为第二粒度CSI上报模式，所述第二粒度CSI上报模式是指采用大于或者等于阈值的时域和/或频域资源粒度进行CSI的上报，所述其他CSI进程是指所述N个CSI进程中除去所述目标CSI进程之外的CSI进程。
  27. 如权利要求24-26任一项所述的基站，其特征在于，若所述目标CSI进程包括第一CSI进程和第二CSI进程，所述第一CSI进程与第一参考信号资源相关联，所述第二CSI进程与第二参考信号资源相关联；
    所述接收单元还用于，接收第三通知消息，所述第三通知消息用于通知所述基站所述第二CSI进程对应的CSI上报模式，所述第二CSI进程对应的CSI上报模式是根据与所述第一CSI进程对应的信道质量测量结果、与所述第二CSI进程对应的信道质量测量结果确定的。
  28. 如权利要求27所述的基站，其特征在于，所述第二CSI进程对应的CSI上报模式为差分反馈模式，所述差分反馈模式是指所述第二CSI进程对应的CSI上报为与所述第一CSI进程对应的CSI上报的差值的上报模式。
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