WO2021031777A1 - Sounding reference signal sending method and sounding reference signal receiving method, terminal, and network device - Google Patents
Sounding reference signal sending method and sounding reference signal receiving method, terminal, and network device Download PDFInfo
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- WO2021031777A1 WO2021031777A1 PCT/CN2020/103509 CN2020103509W WO2021031777A1 WO 2021031777 A1 WO2021031777 A1 WO 2021031777A1 CN 2020103509 W CN2020103509 W CN 2020103509W WO 2021031777 A1 WO2021031777 A1 WO 2021031777A1
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
Definitions
- the present disclosure relates to the field of mobile communication technology, and in particular to a method for sending, receiving, a terminal, and a network device of a sounding reference signal.
- a terminal such as a UE
- the coverage of a cell can be expanded by means of a remote radio head (RRH).
- RRH remote radio head
- RRHs Taking high-speed rail as an example, multiple RRHs belonging to the same cell are deployed along the high-speed rail track. These RRHs send data to the terminal at the same time.
- the single frequency network Single Frequency Network, SFN
- SFN Single Frequency Network
- the terminal performs channel estimation, equalization, demodulation and decoding of the multipath data to determine whether the received data is correct. In the above receiving process, it is difficult for the terminal to distinguish which RRH each path comes from.
- FIG. 1 the network coverage scenarios of RRH1 to RRH3 deployed along the high-speed rail track are shown.
- the same data sent by the two nearest RRHs usually experience similar and opposite frequency deviations when they reach the terminal on the train.
- the signal strengths of the two RRHs are close and the pilots used are exactly the same, it is difficult for the terminal to perform effective frequency offset estimation and compensation, resulting in poor channel estimation performance and greatly reduced probability of correct decoding.
- RRH is used to estimate the uplink frequency offset, and the frequency offset pre-compensation is performed before the data is sent.
- RRH1 estimates that the uplink frequency offset of the terminal is a negative frequency offset, so it performs reverse frequency offset pre-compensation before downlink transmission, that is, adds a positive frequency offset. In this way, when the signal experiences a negative frequency offset and arrives at the terminal, the frequency offset will be partially or completely offset.
- the RRH2 also performs a similar frequency offset pre-compensation operation, so that when the signal reaches the terminal, the frequency offset in the positive and negative directions is very small, and the demodulation performance is improved.
- the current network usually estimates the uplink frequency offset based on the Demodulation Reference Signal (DMRS) of the uplink traffic channel for pre-compensation of the frequency offset.
- DMRS Demodulation Reference Signal
- the DMRS depends on the transmission of the uplink traffic channel, and the corresponding DMRS is sent only when there is uplink traffic channel scheduling.
- At least one embodiment of the present disclosure provides a sounding reference signal SRS sending method, receiving method, terminal, and network equipment, and a symbol interval is introduced between the repeatedly sent SRS symbols to achieve a more accurate uplink frequency offset based on SRS It is estimated to provide support.
- At least one embodiment provides a sounding reference signal SRS sending method, which is applied to a terminal, and includes:
- the SRS is sent to the network.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
- the subcarrier spacing of adjacent resource elements (resource elements, RE) in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: The subcarrier spacing of adjacent resource elements RE in the frequency domain;
- the frequency domain position of at least one symbol mapped by the SRS resource is determined.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the embodiment of the present disclosure also provides a sounding reference signal SRS receiving method, which is applied to network equipment, and includes:
- the terminal Sending first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the frequency domain position of at least one symbol mapped by the SRS resource is determined.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the method further includes:
- the embodiment of the present disclosure also provides a terminal, which includes:
- a receiving module configured to receive first configuration information of an SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
- a mapping determining module configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
- the sending module is used to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
- the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the embodiment of the present disclosure also provides a terminal, which includes a transceiver and a processor, wherein,
- the transceiver is configured to receive first configuration information of SRS resources sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
- the processor is configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;
- the transceiver is also configured to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the processor is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; and according to the frequency hopping of the SRS resource at each hop.
- the start symbol mapped on the resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the processor is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the embodiments of the present disclosure also provide a terminal, which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
- a terminal which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
- the program is executed by the processor, the above The steps of the sounding reference signal SRS transmission method described above.
- the embodiment of the present disclosure also provides a network device, which includes:
- a sending module configured to send first configuration information of the SRS resource to the terminal, where the first configuration information includes the first symbol interval between repeated symbols in the SRS resource;
- a mapping determination module configured for the network device to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
- the receiving module is configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
- the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the network equipment further includes:
- the frequency offset estimation unit is configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
- the embodiment of the present disclosure also provides a network device, which includes a transceiver and a processor, wherein:
- the transceiver is configured to send first configuration information of SRS resources to a terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
- the processor is configured to determine, according to the first symbol interval, the mapping mode of the SRS resource in the time slot;
- the transceiver is further configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the processor is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; and according to the frequency hopping of the SRS resource at each hop.
- the start symbol mapped on the resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the processor is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the processor is further configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
- the embodiments of the present disclosure also provide a network device, which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
- a network device which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
- At least one embodiment provides a computer-readable storage medium having a program stored on the computer-readable storage medium, and when the program is executed by a processor, it implements the method described above. step.
- the sounding reference signal sending method, receiving method, terminal, and network equipment provided by the embodiments of the present disclosure introduce a symbol interval between repeatedly sent SRS symbols, which provides support for SRS-based uplink frequency offset estimation .
- the network-side device may also perform uplink frequency offset estimation based on the symbols with the first symbol interval in the SRS sent by the terminal, which improves the accuracy of the uplink frequency offset estimation based on the SRS.
- Figure 1 is a schematic diagram of a network coverage scenario of an RRH deployed along a high-speed rail track in related technologies
- FIG. 2 is a schematic diagram of an application scenario of an embodiment of the disclosure
- FIG. 3 is a flowchart of a sounding reference signal sending method provided by an embodiment of the disclosure.
- FIG. 8 is a flowchart of a sounding reference signal receiving method provided by an embodiment of the disclosure.
- FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure.
- FIG. 10 is a schematic diagram of another structure of a terminal provided by an embodiment of the disclosure.
- FIG. 11 is a schematic diagram of a structure of a network device provided by an embodiment of the disclosure.
- FIG. 12 is a schematic diagram of another structure of a network device provided by an embodiment of the disclosure.
- LTE Long Time Evolution
- LTE-A Long Time Evolution
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single-carrier Frequency-Division Multiple Access
- SC-FDMA Single-carrier Frequency-Division Multiple Access
- the CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA).
- UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants.
- the TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM).
- OFDMA systems can implement radios such as UltraMobile Broadband (UMB), Evolved UTRA (Evolution-UTRA, E-UTRA), IEEE 802.16 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. technology.
- UMB UltraMobile Broadband
- Evolution-UTRA Evolved UTRA
- E-UTRA Evolved UTRA
- IEEE 802.16 Wi-Fi
- IEEE 802.16 WiMAX
- IEEE 802.20 Flash-OFDM
- Flash-OFDM Flash-OFDM
- UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
- CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2" (3GPP2).
- the technology described in this article can be used for the systems and radio technologies mentioned above as well as other systems and radio technologies.
- the following description describes the NR system for exemplary purposes, and NR terminology is used in most of the description below, although these techniques can also be applied to applications other than NR system applications.
- the wireless communication system includes a terminal 21 and a network device 22.
- the terminal 21 may also be referred to as a user terminal or user equipment (User Equipment, UE), and the terminal 21 may be a mobile phone, a tablet (Tablet Personal Computer), a laptop computer (Laptop Computer), or a personal digital assistant (Personal Digital Assistant).
- PDA mobile Internet device
- MID mobile Internet Device
- Wearable Device wearable device
- vehicle-mounted equipment it should be noted that the specific type of terminal 21 is not limited in the embodiments of the present disclosure .
- Network device 22 may be the RRH, a base station or core network element, wherein, the base station may be a fifth-generation (5 th generation, 5G) and later a base station (e.g.: gNB, 5G NR NB, etc.), or other communication systems
- the base station for example: eNB, wireless local area network (Wireless Local Area Network, WLAN) access point, or other access points, etc.
- the base station can be called Node B, evolved Node B, access point, base transceiver Station (Base Transceiver Station, BTS), radio base station, radio transceiver, basic service set (Basic Service Set, BSS), extended service set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, Wireless Fidelity (WiFi) node, RRH or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not Limited to specific
- the base station may communicate with the terminal 21 under the control of the base station controller.
- the base station controller may be a part of the core network or some base stations. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may directly or indirectly communicate with each other through a backhaul link, which may be a wired or wireless communication link.
- the wireless communication system can support operations on multiple carriers (waveform signals of different frequencies). Multi-carrier transmitters can simultaneously transmit modulated signals on these multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal can be sent on a different carrier and can carry control information (for example, reference signals, control channels, etc.), overhead information, data, and so on.
- the base station can wirelessly communicate with the terminal 21 via one or more access point antennas. Each base station can provide communication coverage for its corresponding coverage area. The coverage area of an access point can be divided into sectors that constitute only a part of the coverage area.
- the wireless communication system may include different types of base stations (for example, macro base stations, micro base stations, or pico base stations).
- the base station can also utilize different radio technologies, such as cellular or WLAN radio access technologies.
- the base stations can be associated with the same or different access networks or operator deployments.
- the coverage areas of different base stations may overlap.
- the communication link in the wireless communication system may include an uplink for carrying uplink (UL) transmission (for example, from the terminal 21 to the network device 22), or for carrying a downlink (DL) Transmission (for example, from network device 22 to terminal 21) downlink.
- UL transmission may also be referred to as reverse link transmission
- DL transmission may also be referred to as forward link transmission.
- Downlink transmission can use licensed frequency bands, unlicensed frequency bands, or both.
- uplink transmission can be performed using licensed frequency bands, unlicensed frequency bands, or both.
- the uplink frequency offset estimation in the high-speed rail scenario depends on the DMRS of the uplink traffic channel, and the DMRS is only sent when there is uplink traffic channel scheduling. Therefore, it is difficult to achieve a stable and reliable uplink frequency based on the DMRS. Partial estimate.
- SRS Sounding Reference Signal
- the number of repeated transmissions of the SRS R can be configured to 2 or 4 times through the network.
- the number of SRS symbols Ns can also be configured. among them:
- each SRS port uses the same subcarrier for transmission on all Ns symbols;
- the embodiments of the present disclosure improve SRS transmission, and introduce a symbol interval between repeated SRS symbols, which provides support for more accurate uplink frequency offset estimation based on SRS.
- the network-side device may also perform uplink frequency offset estimation based on the symbols with the first symbol interval in the SRS sent by the terminal, which improves the accuracy of the uplink frequency offset estimation based on the SRS.
- the SRS sending method provided by the embodiment of the present disclosure when applied to the terminal side, includes:
- Step 31 The terminal receives first configuration information of the SRS resource sent by the network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource.
- the embodiment of the present disclosure configures the first symbol interval between SRS symbols repeatedly sent by the terminal through the first configuration information.
- the symbol interval refers to the interval between two symbols, and the interval is expressed in units of symbols.
- the symbol interval between two symbols is 0, which means that the time domain positions of the two symbols are the same;
- the symbol interval between two symbols is 1, which means that the time domain positions of the two symbols are adjacent; for example, two
- the symbol interval between the two symbols is 2, which means that the time domain positions of the two symbols are not adjacent, and there is another symbol between them.
- the first symbol interval may be an integer greater than or equal to 1, that is, there is at least 1 symbol interval between adjacent SRS symbols that are repeatedly sent. Therefore, the first symbol interval in the embodiment of the present disclosure is an integer greater than one.
- Figure 4 shows a schematic diagram of the interval of repeatedly transmitted SRS symbols, where each rectangle filled with a pattern in Figure 4 represents one SRS symbol, and the left side of Figure 4 is an example of two SRS symbols repeatedly transmitted in the related art, namely The repetitively transmitted SRS symbols are continuous.
- the right side of FIG. 4 is a schematic diagram of two repetitively transmitted SRS symbols improved in the embodiment of the present disclosure. It can be seen that the symbol interval between the two SRS symbols is 2. There is another symbol between them.
- the first symbol interval is 2 to 5 symbols. It is assumed here that the SRS is configured with a maximum of 6 symbols, where, when 6 symbols are configured, the symbol interval between the first SRS symbol and the second SRS symbol is a maximum of 5 symbols.
- Step 32 The terminal determines the mapping mode of the SRS resource in the time slot according to the first symbol interval.
- the terminal determines the mapping manner of the SRS resource in the time slot according to the first symbol interval, for example, determines at least one symbol mapped by the SRS resource in the time slot, so as to determine that the SRS resource is in the time domain The mapped symbol position.
- Step 33 The terminal sends an SRS to the network according to the mapping manner of the SRS resource in the time slot.
- the terminal may perform SRS symbols according to the mapping mode of SRS resources on the time slot, such as the mapped symbols.
- the SRS transmitted by the terminal includes repeated transmission of SRS symbols, and the repeated transmission At least one symbol is spaced between adjacent SRS symbols.
- the embodiment of the present disclosure introduces a symbol interval between the repeatedly sent SRS symbols, which is convenient for the network equipment to estimate the uplink frequency offset based on the repeatedly sent SRS symbols. Since there is a certain interval between the SRS symbols, it is more convenient to implement SRS-based Provides support for accurate uplink frequency offset estimation.
- the first configuration information may further include: the first symbol between the start symbols on two adjacent frequency hopping frequency domain resources Two symbol interval.
- the terminal may determine the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop according to the second symbol interval; and, according to the SRS The start symbol of the resource mapping on the frequency hopping resource of each hop, and the first symbol interval, determine the time domain position of other symbols mapped by the SRS resource on the frequency hopping resource of each hop, so that the SRS resource can be determined The time domain position of each symbol being mapped.
- Figures 5 to 6 show two example diagrams of frequency hopping in a time slot. Each rectangle filled with patterns in Figures 5 to 6 represents an SRS symbol, and Band1 and Band2 represent two frequency hopping in the time slot. The frequency domain location where the resource is located.
- the left side of Figures 5 to 6 are examples of frequency hopping of two SRS symbols repeatedly sent in the related art. It can be seen that the SRS symbols on each frequency hopping resource and all frequency hopping resources are in the time domain (lateral direction). ) Are all continuous.
- the right side of Figs. 5 to 6 are schematic diagrams of retransmitted SRS symbols improved by the embodiments of the present disclosure. It can be seen that there is one other symbol between two SRS symbols of the same frequency hopping in Fig.
- the symbol interval is 2; and the start symbol of the SRS on the frequency hopping Band1 is symbol #1, and the start symbol of the SRS on the frequency hopping Band2 is symbol #2, so the second symbol interval is 1.
- the two SRS symbols of the same frequency hopping in FIG. 6 are separated by 2 other symbols, that is, the first symbol interval is 3; and the start symbol of the SRS on the frequency hopping Band1 is symbol #1, on the frequency hopping Band2 The start symbol of the SRS is symbol #3, so the second symbol interval is 2.
- the embodiments of the present disclosure can help the network side obtain a more accurate uplink frequency offset estimation result.
- the correlation value of the two columns is obtained to obtain the phase ⁇ , which corresponds to 2pi*fd* ⁇ t.
- the larger the time interval ⁇ t the more accurate the estimation of the frequency offset fd.
- the comb factor can be set to an integer greater than 4.
- each resource block (RB) has only one RE for SRS transmission, as shown on the right side of FIG. 7.
- the subcarrier spacing of adjacent resource elements (RE) in the SRS resource in the frequency domain may be a predefined value, or it may be configured through the first configuration information.
- the first configuration information further includes: the subcarrier spacing of adjacent resource elements RE in the SRS resource in the frequency domain.
- the terminal may also determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
- the sub-carrier spacing may be an integer greater than 4.
- the embodiments of the present disclosure can increase the capacity of SRS, which is particularly suitable for scenarios where users are concentrated, such as high-speed rail.
- the reasons are:
- the uplink transmission power of the terminal is limited.
- the power spectral density of a single RE needs to be guaranteed. Therefore, as the RE density of the SRS decreases, the bandwidth of sounding will be wider with the same power spectral density per RE.
- the UE can detect 24 RBs at a time, so that it only takes 10ms to complete the detection of the full bandwidth. Therefore, it can accommodate from the time dimension and frequency domain dimension More UEs perform sounding and increase the SRS capacity, which is very beneficial for scenarios with a large number of users such as high-speed rail.
- the embodiments of the present disclosure can be configured through radio resource control (Radio Resource Control, RRC) signaling.
- RRC Radio Resource Control
- the repeated transmission symbol interval (the first symbol interval ) Configuration/the adjacent two-hop start symbol interval (the second symbol interval), in addition, the frequency domain interval (the subcarrier interval) of adjacent REs for SRS transmission can be introduced through RRC signaling configuration, which The value can be an integer greater than 4.
- an embodiment of the present disclosure provides an SRS receiving method, which can be applied to a network device side.
- the network device may be a base station or an RRH or other device.
- the receiving method includes:
- Step 81 The network device sends first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource.
- Step 82 The network device determines a mapping manner of the SRS resource in the time slot according to the first symbol interval.
- Step 83 The network device receives the SRS sent by the terminal according to the mapping manner of the SRS resource in the time slot.
- the network device of the embodiment of the present disclosure can receive the SRS with the first symbol interval, thereby providing support for using the SRS to estimate the uplink frequency offset.
- the network device can also perform uplink frequency offset estimation according to the received repetitive symbols of the SRS, so as to obtain a more accurate frequency offset estimation result, and use the obtained frequency offset estimation result to perform the frequency offset estimation of the transmitted data. Partial pre-compensation processing can improve the accuracy of data decoding and improve data transmission efficiency.
- the first configuration information further includes: the second symbol interval between the start symbols on two adjacent frequency hopping frequency domain resources;
- the network device may determine the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop according to the second symbol interval; and, according to the SRS The start symbol of the resource mapping on the frequency hopping resource of each hop and the first symbol interval determine the time domain position of other symbols mapped by the SRS resource on the frequency hopping resource of each hop.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain may be a predefined value, or the first configuration information may further include: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain.
- the frequency domain position of at least one symbol mapped by the SRS resource may also be determined according to the subcarrier interval.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the embodiments of the present disclosure also provide a device for implementing the above method.
- an embodiment of the present disclosure provides a terminal 90, including:
- a receiving module configured to receive first configuration information of an SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
- a mapping determining module configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
- the sending module is used to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
- the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the terminal 1000 includes a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface, where:
- the terminal 1000 further includes: a program that is stored in the memory 1003 and can be run on the processor 1001. When the program is executed by the processor 1001, the following steps are implemented:
- the SRS is sent to the network.
- the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003 are linked together.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
- the bus interface provides the interface.
- the transceiver 1002 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
- the user interface 1004 may also be an interface that can externally and internally connect the required equipment.
- the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.
- the processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1001 when performing operations.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the frequency domain position of at least one symbol mapped by the SRS resource is determined.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- an embodiment of the present disclosure provides a schematic structural diagram of a network device 110, and the network device 110 includes:
- a sending module configured to send first configuration information of the SRS resource to the terminal, where the first configuration information includes the first symbol interval between repeated symbols in the SRS resource;
- a mapping determination module configured for the network device to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
- the receiving module is configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
- the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the network equipment further includes:
- the frequency offset estimation unit is configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
- an embodiment of the present disclosure provides another schematic structural diagram of a network device, including: a processor 1201, a transceiver 1202, a memory 1203, and a bus interface, where:
- the network device 1200 further includes: a program that is stored in the memory 1203 and can run on the processor 1201, and when the program is executed by the processor 1201, the following steps are implemented:
- the terminal Sending first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
- the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1203 are linked together.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
- the bus interface provides the interface.
- the transceiver 1202 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
- the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 can store data used by the processor 1201 when performing operations.
- the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
- the network device determines, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;
- the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
- the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
- the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
- the frequency domain position of at least one symbol mapped by the SRS resource is determined.
- the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- the disclosed device and method may be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
- 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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present disclosure.
- the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
- the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
- the technical solution of the present disclosure essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product.
- the computer software product is stored in a storage medium, including several
- the instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the SRS sending method or the SRS receiving method described in the various embodiments of the present disclosure.
- the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
- the program can be stored in a computer readable storage medium. When executed, it may include the processes of the above-mentioned method embodiments.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
- modules, units, and sub-units can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to implement Described functions in other electronic units or combinations thereof.
- ASIC Application Specific Integrated Circuits
- DSP Digital Signal Processor
- DSP Device Digital Signal Processing Device
- DSPD Digital Signal Processing Device
- PLD Programmable Logic Device
- FPGA Field-Programmable Gate Array
- the technology described in the embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
- the software codes can be stored in the memory and executed by the processor.
- the memory can be implemented in the processor or external to the processor.
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Abstract
A sounding reference signal sending method and a sounding reference signal receiving method, a terminal, and a network device. The method comprises: a terminal receiving first configuration information, sent over a network, of an SRS resource, wherein the first configuration information comprises a first symbol interval between repeated symbols in the SRS resource; the terminal determining, according to the first symbol interval, a mapping mode of the SRS resource in a time slot; and the terminal sending, according to the mapping mode of the SRS resource in the time slot, an SRS to the network.
Description
相关申请的交叉引用Cross references to related applications
本申请主张在2019年8月16日在中国提交的中国专利申请号No.201910758987.6的优先权,其全部内容通过引用包含于此。This application claims the priority of Chinese Patent Application No. 201910758987.6 filed in China on August 16, 2019, the entire content of which is incorporated herein by reference.
本公开涉及移动通信技术领域,具体涉及一种探测参考信号的发送方法、接收方法、终端及网络设备。The present disclosure relates to the field of mobile communication technology, and in particular to a method for sending, receiving, a terminal, and a network device of a sounding reference signal.
在终端(如UE)快速移动(如高铁)的场景下,为了避免终端的频繁切换,可以通过射频拉远头(Remote Radio Head,RRH)拉远的方式扩大小区覆盖范围。以高铁为例,沿着高铁轨道部署多个属于同一个小区的RRH,这些RRH同时给终端发送数据,通常可以采用单频网(Single Frequency Network,SFN)的方式发送,各个RRH发送的数据完全相同,并经历不同的多径到达终端,终端对多径数据进行信道估计,均衡,解调译码出发送数据,判断是否接收正确。上述接收过程中,终端难以区分每一径来自哪个RRH。In a scenario where a terminal (such as a UE) is moving rapidly (such as a high-speed rail), in order to avoid frequent handovers of the terminal, the coverage of a cell can be expanded by means of a remote radio head (RRH). Taking high-speed rail as an example, multiple RRHs belonging to the same cell are deployed along the high-speed rail track. These RRHs send data to the terminal at the same time. Usually, the single frequency network (Single Frequency Network, SFN) method can be used to send the data. It is the same and arrives at the terminal through different multipaths. The terminal performs channel estimation, equalization, demodulation and decoding of the multipath data to determine whether the received data is correct. In the above receiving process, it is difficult for the terminal to distinguish which RRH each path comes from.
如图1所示,示出了沿高铁轨道部署的RRH1~RRH3的网络覆盖场景。当列车行驶到两个RRH站址中间时,距离最近的两个RRH发送的相同的数据到达火车上的终端时通常经历了大小相近,正负相反的频偏。并且,由于两个RRH的信号强度接近,使用的导频完全相同,终端难以进行有效的频偏估计和补偿,导致信道估计性能较差,译码正确概率大大降低。As shown in Figure 1, the network coverage scenarios of RRH1 to RRH3 deployed along the high-speed rail track are shown. When the train travels to the middle of two RRH sites, the same data sent by the two nearest RRHs usually experience similar and opposite frequency deviations when they reach the terminal on the train. Moreover, since the signal strengths of the two RRHs are close and the pilots used are exactly the same, it is difficult for the terminal to perform effective frequency offset estimation and compensation, resulting in poor channel estimation performance and greatly reduced probability of correct decoding.
现网中为了解决上述问题,采用RRH估计上行频偏的方式,在发送数据之前即进行频偏预补偿。如图1所示,RRH1估计出终端的上行频偏为负频偏,那么它在进行下行发送之前先进行反方向频偏预补偿,即增加一个正频偏。这样,当信号经历负频偏到达终端时,频偏将发生部分或全部抵消。同样RRH2也进行类似的频偏预补偿操作,从而使得信号到达终端时正负方向的频偏都很小,达到提升解调性能的目的。In order to solve the above problems in the current network, RRH is used to estimate the uplink frequency offset, and the frequency offset pre-compensation is performed before the data is sent. As shown in Figure 1, RRH1 estimates that the uplink frequency offset of the terminal is a negative frequency offset, so it performs reverse frequency offset pre-compensation before downlink transmission, that is, adds a positive frequency offset. In this way, when the signal experiences a negative frequency offset and arrives at the terminal, the frequency offset will be partially or completely offset. Similarly, the RRH2 also performs a similar frequency offset pre-compensation operation, so that when the signal reaches the terminal, the frequency offset in the positive and negative directions is very small, and the demodulation performance is improved.
现网通常基于上行业务信道的解调参考信号(Demodulation Reference Signal,DMRS)估计上行频偏,以进行上频偏预补偿。但是DMRS依赖于上行业务信道的发送,只有在存在上行业务信道调度时,才会有相应的DMRS发送。The current network usually estimates the uplink frequency offset based on the Demodulation Reference Signal (DMRS) of the uplink traffic channel for pre-compensation of the frequency offset. However, the DMRS depends on the transmission of the uplink traffic channel, and the corresponding DMRS is sent only when there is uplink traffic channel scheduling.
发明内容Summary of the invention
本公开的至少一个实施例提供了一种探测参考信号SRS的发送方法、接收方法、终端及网络设备,在重复发送的SRS符号间引入了符号间隔,为基于SRS实现更为准确的上行频偏估计提供了支持。At least one embodiment of the present disclosure provides a sounding reference signal SRS sending method, receiving method, terminal, and network equipment, and a symbol interval is introduced between the repeatedly sent SRS symbols to achieve a more accurate uplink frequency offset based on SRS It is estimated to provide support.
根据本公开的一个方面,至少一个实施例提供了一种探测参考信号SRS的发送方法,应用于终端,包括:According to an aspect of the present disclosure, at least one embodiment provides a sounding reference signal SRS sending method, which is applied to a terminal, and includes:
接收网络发送的SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;Receiving first configuration information of the SRS resource sent by the network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;Determine the mapping mode of the SRS resource in the time slot according to the first symbol interval;
根据所述SRS资源在时隙内的映射方式,向网络发送SRS。According to the mapping mode of the SRS resource in the time slot, the SRS is sent to the network.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval includes:
根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;Determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;
根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。According to the start symbol mapped by the SRS resource on the frequency hopping resource of each hop and the first symbol interval, the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
可选的,所述SRS资源中的相邻资源元素(resource element,RE)在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of adjacent resource elements (resource elements, RE) in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: The subcarrier spacing of adjacent resource elements RE in the frequency domain;
所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,还包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval further includes:
根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。According to the subcarrier interval, the frequency domain position of at least one symbol mapped by the SRS resource is determined.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
本公开实施例还提供了一种探测参考信号SRS的接收方法,应用于网络设备,包括:The embodiment of the present disclosure also provides a sounding reference signal SRS receiving method, which is applied to network equipment, and includes:
向终端发送SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;Sending first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;Determine the mapping mode of the SRS resource in the time slot according to the first symbol interval;
根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。Receiving the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval includes:
根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;Determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;
根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。According to the start symbol mapped by the SRS resource on the frequency hopping resource of each hop and the first symbol interval, the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,还包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval further includes:
根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。According to the subcarrier interval, the frequency domain position of at least one symbol mapped by the SRS resource is determined.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
可选的,在接收所述终端发送的SRS的步骤之后,所述方法还包括:Optionally, after the step of receiving the SRS sent by the terminal, the method further includes:
根据接收到的所述SRS的重复符号,进行上行频偏估计。Perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
本公开实施例还提供了一种终端,其中包括:The embodiment of the present disclosure also provides a terminal, which includes:
接收模块,用于接收网络发送的SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;A receiving module, configured to receive first configuration information of an SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
映射确定模块,用于根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;A mapping determining module, configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;
发送模块,用于根据所述SRS资源在时隙内的映射方式,向网络发送SRS。The sending module is used to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述映射确定模块,还用于根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。The mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop The start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述映射确定模块,还用于根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。The mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
本公开实施例还提供了一种终端,其中包括收发机和处理器,其中,The embodiment of the present disclosure also provides a terminal, which includes a transceiver and a processor, wherein,
所述收发机,用于接收网络发送的SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;The transceiver is configured to receive first configuration information of SRS resources sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
所述处理器,用于根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;The processor is configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;
所述收发机,还用于根据所述SRS资源在时隙内的映射方式,向网络发送SRS。The transceiver is also configured to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述处理器,还用于根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。The processor is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; and according to the frequency hopping of the SRS resource at each hop The start symbol mapped on the resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述处理器,还用于根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。The processor is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
本公开实施例还提供了一种终端,其中包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如上所述的探测参考信号SRS的发送方法的步骤。The embodiments of the present disclosure also provide a terminal, which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor. When the program is executed by the processor, the above The steps of the sounding reference signal SRS transmission method described above.
本公开实施例还提供了一种网络设备,其中包括:The embodiment of the present disclosure also provides a network device, which includes:
发送模块,用于向终端发送SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;A sending module, configured to send first configuration information of the SRS resource to the terminal, where the first configuration information includes the first symbol interval between repeated symbols in the SRS resource;
映射确定模块,用于所述网络设备根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;A mapping determination module, configured for the network device to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;
接收模块,用于根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。The receiving module is configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述映射确定模块,还用于根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。The mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop The start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源 元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述映射确定模块,还用于根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。The mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
可选的,所述网络设备还包括:Optionally, the network equipment further includes:
频偏估计单元,用于在接收所述终端发送的SRS之后,根据接收到的所述SRS的重复符号,进行上行频偏估计。The frequency offset estimation unit is configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
本公开实施例还提供了一种网络设备,其中包括收发机和处理器,其中,The embodiment of the present disclosure also provides a network device, which includes a transceiver and a processor, wherein:
所述收发机,用于向终端发送SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;The transceiver is configured to send first configuration information of SRS resources to a terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
所述处理器,用于所述网络设备根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;The processor is configured to determine, according to the first symbol interval, the mapping mode of the SRS resource in the time slot;
所述收发机,还用于根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。The transceiver is further configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述处理器,还用于根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。The processor is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; and according to the frequency hopping of the SRS resource at each hop The start symbol mapped on the resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述处理器,还用于根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。The processor is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
可选的,所述处理器,还用于在接收所述终端发送的SRS之后,根据接 收到的所述SRS的重复符号,进行上行频偏估计。Optionally, the processor is further configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
本公开实施例还提供了一种网络设备,其中包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如上所述的探测参考信号SRS的接收方法的步骤。The embodiments of the present disclosure also provide a network device, which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor. When the program is executed by the processor, the above The steps of the sounding reference signal SRS receiving method.
根据本公开的另一方面,至少一个实施例提供了一种计算机可读存储介质,所述计算机可读存储介质上存储有程序,所述程序被处理器执行时,实现如上所述的方法的步骤。According to another aspect of the present disclosure, at least one embodiment provides a computer-readable storage medium having a program stored on the computer-readable storage medium, and when the program is executed by a processor, it implements the method described above. step.
与相关技术相比,本公开实施例提供的探测参考信号的发送方法、接收方法、终端及网络设备,在重复发送的SRS符号间引入了符号间隔,为基于SRS的上行频偏估计提供了支持。另外,本公开实施例中,网络侧设备还可以基于终端发送的SRS中具有第一符号间隔的符号进行上行频偏估计,提高了基于SRS的上行频偏估计的准确性。Compared with related technologies, the sounding reference signal sending method, receiving method, terminal, and network equipment provided by the embodiments of the present disclosure introduce a symbol interval between repeatedly sent SRS symbols, which provides support for SRS-based uplink frequency offset estimation . In addition, in the embodiments of the present disclosure, the network-side device may also perform uplink frequency offset estimation based on the symbols with the first symbol interval in the SRS sent by the terminal, which improves the accuracy of the uplink frequency offset estimation based on the SRS.
通过阅读下文可选实施方式的详细描述,各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出可选实施方式的目的,而并不认为是对本公开的限制。而且在整个附图中,用相同的参考符号表示相同的部件。在附图中:By reading the detailed description of the optional embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only used for the purpose of showing alternative embodiments, and are not considered as a limitation to the present disclosure. Also, throughout the drawings, the same reference symbols are used to denote the same components. In the attached picture:
图1为相关技术中沿高铁轨道部署的RRH的网络覆盖场景示意图;Figure 1 is a schematic diagram of a network coverage scenario of an RRH deployed along a high-speed rail track in related technologies;
图2为本公开实施例的一种应用场景示意图;FIG. 2 is a schematic diagram of an application scenario of an embodiment of the disclosure;
图3为本公开实施例提供的探测参考信号的发送方法的一种流程图;FIG. 3 is a flowchart of a sounding reference signal sending method provided by an embodiment of the disclosure;
图4~7为本公开实施例提供的SRS映射的若干示例图;4 to 7 are diagrams of several examples of SRS mapping provided by embodiments of the disclosure;
图8为本公开实施例提供的探测参考信号的接收方法的一种流程图;FIG. 8 is a flowchart of a sounding reference signal receiving method provided by an embodiment of the disclosure;
图9为本公开实施例提供的终端的一种结构示意图;FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure;
图10为本公开实施例提供的终端的另一种结构示意图;FIG. 10 is a schematic diagram of another structure of a terminal provided by an embodiment of the disclosure;
图11为本公开实施例提供的网络设备的一种结构示意图;FIG. 11 is a schematic diagram of a structure of a network device provided by an embodiment of the disclosure;
图12为本公开实施例提供的网络设备的另一种结构示意图。FIG. 12 is a schematic diagram of another structure of a network device provided by an embodiment of the disclosure.
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、***、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。说明书以及权利要求中“和/或”表示所连接对象的至少其中之一。The terms "first" and "second" in the specification and claims of this application are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In the specification and claims, "and/or" means at least one of the connected objects.
本文所描述的技术不限于NR***以及长期演进型(Long Time Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)***,并且也可用于各种无线通信***,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)和其他***。术语“***”和“网络”常被可互换地使用。CDMA***可实现诸如CDMA2000、通用地面无线电接入(Universal Terrestrial Radio Access,UTRA)等无线电技术。UTRA包括宽带CDMA(Wideband Code Division Multiple Access,WCDMA)和其他CDMA变体。TDMA***可实现诸如全球移动通信***(Global System for Mobile Communication,GSM)之类的无线电技术。OFDMA***可实现诸如超移动宽带(UltraMobile Broadband,UMB)、演进型UTRA(Evolution-UTRA,E-UTRA)、IEEE 802.21(Wi-Fi)、IEEE 802.16(WiMAX)、IEEE 802.20、Flash-OFDM等无线电技术。UTRA和E-UTRA是通用移动电信***(Universal Mobile Telecommunications System,UMTS)的部分。LTE和更高级的LTE(如 LTE-A)是使用E-UTRA的新UMTS版本。UTRA、E-UTRA、UMTS、LTE、LTE-A以及GSM在来自名为“第三代伙伴项目”(3rd Generation Partnership Project,3GPP)的组织的文献中描述。CDMA2000和UMB在来自名为“第三代伙伴项目2”(3GPP2)的组织的文献中描述。本文所描述的技术既可用于以上提及的***和无线电技术,也可用于其他***和无线电技术。然而,以下描述出于示例目的描述了NR***,并且在以下大部分描述中使用NR术语,尽管这些技术也可应用于NR***应用以外的应用。The technology described in this article is not limited to NR systems and Long Time Evolution (LTE)/LTE-Advanced (LTE-A) systems, and can also be used in various wireless communication systems, such as code division multiple access. (Code Division Multiple Access, CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" are often used interchangeably. The CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA). UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. The TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM). OFDMA systems can implement radios such as UltraMobile Broadband (UMB), Evolved UTRA (Evolution-UTRA, E-UTRA), IEEE 802.16 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. technology. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and more advanced LTE (such as LTE-A) are new UMTS versions that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The technology described in this article can be used for the systems and radio technologies mentioned above as well as other systems and radio technologies. However, the following description describes the NR system for exemplary purposes, and NR terminology is used in most of the description below, although these techniques can also be applied to applications other than NR system applications.
以下描述提供示例而并非限定权利要求中阐述的范围、适用性或者配置。可以对所讨论的要素的功能和布置作出改变而不会脱离本公开的精神和范围。各种示例可恰适地省略、替代、或添加各种规程或组件。例如,可以按不同于所描述的次序来执行所描述的方法,并且可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the discussed elements without departing from the spirit and scope of the present disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
请参见图2,图2示出本公开实施例可应用的一种无线通信***的框图。无线通信***包括终端21和网络设备22。其中,终端21也可以称作用户终端或用户设备(User Equipment,UE),终端21可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(Personal Digital Assistant,PDA)、移动上网装置(Mobile Internet Device,MID)、可穿戴式设备(Wearable Device)或车载设备等终端侧设备,需要说明的是,在本公开实施例中并不限定终端21的具体类型。网络设备22可以是RRH、基站或核心网网元,其中,上述基站可以是第五代(5
th generation,5G)及以后版本的基站(例如:gNB、5G NR NB等),或者其他通信***中的基站(例如:eNB、无线局域网(Wireless Local Area Network,WLAN)接入点、或其他接入点等),其中,基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、无线保真(Wireless Fidelity,WiFi)节点、RRH或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本公开实施例中仅以NR***中的基站为例,但是并不限 定基站的具体类型。
Please refer to FIG. 2, which shows a block diagram of a wireless communication system to which the embodiments of the present disclosure are applicable. The wireless communication system includes a terminal 21 and a network device 22. Among them, the terminal 21 may also be referred to as a user terminal or user equipment (User Equipment, UE), and the terminal 21 may be a mobile phone, a tablet (Tablet Personal Computer), a laptop computer (Laptop Computer), or a personal digital assistant (Personal Digital Assistant). , PDA), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted equipment and other terminal side devices, it should be noted that the specific type of terminal 21 is not limited in the embodiments of the present disclosure . Network device 22 may be the RRH, a base station or core network element, wherein, the base station may be a fifth-generation (5 th generation, 5G) and later a base station (e.g.: gNB, 5G NR NB, etc.), or other communication systems The base station (for example: eNB, wireless local area network (Wireless Local Area Network, WLAN) access point, or other access points, etc.), where the base station can be called Node B, evolved Node B, access point, base transceiver Station (Base Transceiver Station, BTS), radio base station, radio transceiver, basic service set (Basic Service Set, BSS), extended service set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, Wireless Fidelity (WiFi) node, RRH or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not Limited to specific technical vocabulary, it should be noted that in the embodiments of the present disclosure, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.
基站可在基站控制器的控制下与终端21通信,在各种示例中,基站控制器可以是核心网或某些基站的一部分。一些基站可通过回程与核心网进行控制信息或用户数据的通信。在一些示例中,这些基站中的一些可以通过回程链路直接或间接地彼此通信,回程链路可以是有线或无线通信链路。无线通信***可支持多个载波(不同频率的波形信号)上的操作。多载波发射机能同时在这多个载波上传送经调制信号。例如,每条通信链路可以是根据各种无线电技术来调制的多载波信号。每个已调信号可在不同的载波上发送并且可携带控制信息(例如,参考信号、控制信道等)、开销信息、数据等。The base station may communicate with the terminal 21 under the control of the base station controller. In various examples, the base station controller may be a part of the core network or some base stations. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may directly or indirectly communicate with each other through a backhaul link, which may be a wired or wireless communication link. The wireless communication system can support operations on multiple carriers (waveform signals of different frequencies). Multi-carrier transmitters can simultaneously transmit modulated signals on these multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal can be sent on a different carrier and can carry control information (for example, reference signals, control channels, etc.), overhead information, data, and so on.
基站可经由一个或多个接入点天线与终端21进行无线通信。每个基站可以为各自相应的覆盖区域提供通信覆盖。接入点的覆盖区域可被划分成仅构成该覆盖区域的一部分的扇区。无线通信***可包括不同类型的基站(例如宏基站、微基站、或微微基站)。基站也可利用不同的无线电技术,诸如蜂窝或WLAN无线电接入技术。基站可以与相同或不同的接入网或运营商部署相关联。不同基站的覆盖区域(包括相同或不同类型的基站的覆盖区域、利用相同或不同无线电技术的覆盖区域、或属于相同或不同接入网的覆盖区域)可以交叠。The base station can wirelessly communicate with the terminal 21 via one or more access point antennas. Each base station can provide communication coverage for its corresponding coverage area. The coverage area of an access point can be divided into sectors that constitute only a part of the coverage area. The wireless communication system may include different types of base stations (for example, macro base stations, micro base stations, or pico base stations). The base station can also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations can be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of the same or different types of base stations, coverage areas using the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.
无线通信***中的通信链路可包括用于承载上行链路(Uplink,UL)传输(例如,从终端21到网络设备22)的上行链路,或用于承载下行链路(Downlink,DL)传输(例如,从网络设备22到终端21)的下行链路。UL传输还可被称为反向链路传输,而DL传输还可被称为前向链路传输。下行链路传输可以使用授权频段、非授权频段或这两者来进行。类似地,上行链路传输可以使用有授权频段、非授权频段或这两者来进行。The communication link in the wireless communication system may include an uplink for carrying uplink (UL) transmission (for example, from the terminal 21 to the network device 22), or for carrying a downlink (DL) Transmission (for example, from network device 22 to terminal 21) downlink. UL transmission may also be referred to as reverse link transmission, and DL transmission may also be referred to as forward link transmission. Downlink transmission can use licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmission can be performed using licensed frequency bands, unlicensed frequency bands, or both.
如背景技术中所述的,诸如高铁场景下上行频偏估计依赖于上行业务信道的DMRS,而所述DMRS只有在存在上行业务信道调度时才会发送,因此难以基于DMRS实现稳定可靠的上行频偏估计。As described in the background art, the uplink frequency offset estimation in the high-speed rail scenario depends on the DMRS of the uplink traffic channel, and the DMRS is only sent when there is uplink traffic channel scheduling. Therefore, it is difficult to achieve a stable and reliable uplink frequency based on the DMRS. Partial estimate.
考虑到利用DMRS进行上行频偏估计受限于上行业务的调度情况,而终端通常始终需要发送探测参考信号(Sounding Reference Signal,SRS)来进行上行信道的探测,因此SRS的重复发送提供了一种进行上行信道估计的更 好途径。Considering that the use of DMRS for uplink frequency offset estimation is limited by the scheduling of uplink services, and the terminal always needs to send Sounding Reference Signal (SRS) to detect the uplink channel, so the repeated transmission of SRS provides a way A better way to perform uplink channel estimation.
例如,在新空口(New Radio,NR)***设计时,为了支持SRS的覆盖增强,引入SRS的重复发送,比如可以通过网络配置SRS重复传输次数R为2次或者4次。另外,还可以配置SRS的符号个数Ns。其中:For example, in the design of the New Radio (NR) system, in order to support the coverage enhancement of the SRS, repeated transmission of the SRS is introduced. For example, the number of repeated transmissions of the SRS R can be configured to 2 or 4 times through the network. In addition, the number of SRS symbols Ns can also be configured. among them:
当跳频不开启时,比如R=Ns,此时在一个时隙(slot)内,每个SRS的端口(port)在所有的Ns个符号上使用相同的子载波传输;When frequency hopping is not enabled, for example, R=Ns, at this time, in a slot, each SRS port uses the same subcarrier for transmission on all Ns symbols;
当跳频开启时,比如R=2,Ns=4,此时在一个slot内,前2个符号重复发送,后2个符号跳频后重复发送。其中,重复发送的符号是连续的。When frequency hopping is enabled, for example, R=2, Ns=4, at this time, in a slot, the first 2 symbols are repeatedly sent, and the last 2 symbols are repeatedly sent after frequency hopping. Among them, the repeated symbols are continuous.
从以上介绍可以看出,相关技术不论是否开启了时隙内的跳频,重复传输R个SRS的符号均是连续发送的。也就是说,相关技术中,SRS的重复发送通常都是使用相邻的正交频分复用(Orthogonal frequency division multiplex,OFDM)符号发送,这样容易导致频偏估计的精度受到影响。另一方面,考虑到高铁等场景下的用户数量较多,因此SRS的信道容量也需要提升。It can be seen from the above introduction that in the related technology, whether or not the frequency hopping in the time slot is turned on, the symbols of the R SRS are transmitted continuously. That is to say, in the related art, the repeated transmission of SRS is usually transmitted using adjacent Orthogonal Frequency Division Multiplexing (OFDM) symbols, which may easily affect the accuracy of frequency offset estimation. On the other hand, considering the large number of users in scenarios such as high-speed rail, the channel capacity of SRS also needs to be improved.
为解决以上问题中的至少一个,本公开实施例对SRS发送进行了改进,在重复发送的SRS符号间引入了符号间隔,为基于SRS实现更为准确的上行频偏估计提供了支持。另外,本公开实施例中,网络侧设备也可以基于终端发送的SRS中具有第一符号间隔的符号进行上行频偏估计,提高了基于SRS的上行频偏估计的准确性。In order to solve at least one of the above problems, the embodiments of the present disclosure improve SRS transmission, and introduce a symbol interval between repeated SRS symbols, which provides support for more accurate uplink frequency offset estimation based on SRS. In addition, in the embodiments of the present disclosure, the network-side device may also perform uplink frequency offset estimation based on the symbols with the first symbol interval in the SRS sent by the terminal, which improves the accuracy of the uplink frequency offset estimation based on the SRS.
请参照图3,本公开实施例提供的SRS的发送方法,在应用于终端侧时,包括:Referring to FIG. 3, the SRS sending method provided by the embodiment of the present disclosure, when applied to the terminal side, includes:
步骤31,终端接收网络发送的SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔。Step 31: The terminal receives first configuration information of the SRS resource sent by the network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource.
这里,本公开实施例通过第一配置信息,配置了终端重复发送的SRS符号间的第一符号间隔。本公开实施例中,符号间隔是指两个符号之间的间隔,该间隔采用符号为单位进行表示。例如两个符号之间的符号间隔为0,表示该两个符号的时域位置相同;两个符号之间的符号间隔为1,表示该两个符号的时域位置相邻;又例如,两个符号之间的符号间隔为2,表示该两个符号的时域位置不相邻,两者之间存在一个其他符号。具体的,所述第一符号间隔可以是大于或等于1的整数,也就是说,重复发送的相邻SRS符号间至 少间隔1个符号。因此,本公开实施例的所述第一符号间隔为大于1的整数。Here, the embodiment of the present disclosure configures the first symbol interval between SRS symbols repeatedly sent by the terminal through the first configuration information. In the embodiment of the present disclosure, the symbol interval refers to the interval between two symbols, and the interval is expressed in units of symbols. For example, the symbol interval between two symbols is 0, which means that the time domain positions of the two symbols are the same; the symbol interval between two symbols is 1, which means that the time domain positions of the two symbols are adjacent; for example, two The symbol interval between the two symbols is 2, which means that the time domain positions of the two symbols are not adjacent, and there is another symbol between them. Specifically, the first symbol interval may be an integer greater than or equal to 1, that is, there is at least 1 symbol interval between adjacent SRS symbols that are repeatedly sent. Therefore, the first symbol interval in the embodiment of the present disclosure is an integer greater than one.
图4给出了重复发送的SRS符号的间隔示意图,其中,图4中填充有图案的每个长方形表示一个SRS符号,图4左侧为相关技术的重复发送的两个SRS符号的示例,即重复发送的SRS符号是连续的,图4的右侧则是本公开实施例改进后的重复发送的两个SRS符号的示意,可以看出,两个SRS符号之间的符号间隔为2,两者之间存在一个其它符号。Figure 4 shows a schematic diagram of the interval of repeatedly transmitted SRS symbols, where each rectangle filled with a pattern in Figure 4 represents one SRS symbol, and the left side of Figure 4 is an example of two SRS symbols repeatedly transmitted in the related art, namely The repetitively transmitted SRS symbols are continuous. The right side of FIG. 4 is a schematic diagram of two repetitively transmitted SRS symbols improved in the embodiment of the present disclosure. It can be seen that the symbol interval between the two SRS symbols is 2. There is another symbol between them.
例如,当重复发送的符号个数为2时,所述第一符号间隔为2~5个符号。这里假设SRS最多配置6个符号,其中,当配置6个符号时,第一个SRS符号和第二个SRS符号的符号间隔最大为5个符号。For example, when the number of repeatedly transmitted symbols is 2, the first symbol interval is 2 to 5 symbols. It is assumed here that the SRS is configured with a maximum of 6 symbols, where, when 6 symbols are configured, the symbol interval between the first SRS symbol and the second SRS symbol is a maximum of 5 symbols.
步骤32,所述终端根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式。Step 32: The terminal determines the mapping mode of the SRS resource in the time slot according to the first symbol interval.
这里,终端根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式,例如,确定所述SRS资源在时隙内映射的至少一个符号,从而可以确定SRS资源在时域上映射的符号位置。Here, the terminal determines the mapping manner of the SRS resource in the time slot according to the first symbol interval, for example, determines at least one symbol mapped by the SRS resource in the time slot, so as to determine that the SRS resource is in the time domain The mapped symbol position.
步骤33,所述终端根据所述SRS资源在时隙内的映射方式,向网络发送SRS。Step 33: The terminal sends an SRS to the network according to the mapping manner of the SRS resource in the time slot.
这里,所述终端可以根据SRS资源在时隙上的映射方式,如映射到的符号,进行SRS的符号,此时,终端所发射的SRS中包括有重复传输的SRS符号,且,重复发送的相邻SRS符号间至少间隔一个符号。Here, the terminal may perform SRS symbols according to the mapping mode of SRS resources on the time slot, such as the mapped symbols. At this time, the SRS transmitted by the terminal includes repeated transmission of SRS symbols, and the repeated transmission At least one symbol is spaced between adjacent SRS symbols.
通过以上步骤,本公开实施例在重复发送的SRS符号间引入了符号间隔,便于网络设备根据重复发送的SRS符号进行上行频偏估计,由于SRS符号间存在一定的间隔,从而为基于SRS实现更为准确的上行频偏估计提供了支持。Through the above steps, the embodiment of the present disclosure introduces a symbol interval between the repeatedly sent SRS symbols, which is convenient for the network equipment to estimate the uplink frequency offset based on the repeatedly sent SRS symbols. Since there is a certain interval between the SRS symbols, it is more convenient to implement SRS-based Provides support for accurate uplink frequency offset estimation.
本公开实施例中,如果所述SRS资源还配置了时隙内跳频,则所述第一配置信息还可以包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔。此时,在上述步骤32中,所述终端可以根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;以及,根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置,从而可以确定SRS资源所映射的各个符号的时域位置。In the embodiment of the present disclosure, if the SRS resource is also configured with intra-slot frequency hopping, the first configuration information may further include: the first symbol between the start symbols on two adjacent frequency hopping frequency domain resources Two symbol interval. At this time, in the above step 32, the terminal may determine the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop according to the second symbol interval; and, according to the SRS The start symbol of the resource mapping on the frequency hopping resource of each hop, and the first symbol interval, determine the time domain position of other symbols mapped by the SRS resource on the frequency hopping resource of each hop, so that the SRS resource can be determined The time domain position of each symbol being mapped.
图5~6给出了时隙内跳频的两个示例图,其中,图5~6中填充有图案的每个长方形表示一个SRS符号,Band1和Band2分别表示时隙内的两个跳频资源所在的频域位置。图5~6的左侧分别是相关技术的重复发送的两个SRS符号的跳频示例,可以看出在每个跳频资源以及在所有的跳频资源上的SRS符号在时域(横向方向)上都是连续的。图5~6的右侧则是本公开实施例改进后的重复发送的SRS符号的示意,可以看出,图5的同一个跳频的两个SRS符号之间间隔一个其它符号,即第一符号间隔为2;且在跳频Band1上的SRS的起始符号为符号#1,在跳频Band2上的SRS的起始符号为符号#2,因此第二符号间隔为1。图6的同一个跳频的两个SRS符号之间间隔2个其它符号,即第一符号间隔为3;且在跳频Band1上的SRS的起始符号为符号#1,在跳频Band2上的SRS的起始符号为符号#3,因此第二符号间隔为2。Figures 5 to 6 show two example diagrams of frequency hopping in a time slot. Each rectangle filled with patterns in Figures 5 to 6 represents an SRS symbol, and Band1 and Band2 represent two frequency hopping in the time slot. The frequency domain location where the resource is located. The left side of Figures 5 to 6 are examples of frequency hopping of two SRS symbols repeatedly sent in the related art. It can be seen that the SRS symbols on each frequency hopping resource and all frequency hopping resources are in the time domain (lateral direction). ) Are all continuous. The right side of Figs. 5 to 6 are schematic diagrams of retransmitted SRS symbols improved by the embodiments of the present disclosure. It can be seen that there is one other symbol between two SRS symbols of the same frequency hopping in Fig. 5, that is, the first The symbol interval is 2; and the start symbol of the SRS on the frequency hopping Band1 is symbol # 1, and the start symbol of the SRS on the frequency hopping Band2 is symbol # 2, so the second symbol interval is 1. The two SRS symbols of the same frequency hopping in FIG. 6 are separated by 2 other symbols, that is, the first symbol interval is 3; and the start symbol of the SRS on the frequency hopping Band1 is symbol # 1, on the frequency hopping Band2 The start symbol of the SRS is symbol # 3, so the second symbol interval is 2.
本公开实施例中,当存在时隙内跳频时,相邻两跳之间的起始符号间隔可以为灵活配置,不仅限于间隔为网络配置的SRS的重复传输次数R。例如R=2,预先配置的SRS的符号个数Ns=4时,可以设置重复的间隔为1~4,由于两跳,同时考虑到每跳上SYS符号的间隔需要大于1,因此最大的间隔为4,两跳的起始符号间隔为1~4。In the embodiments of the present disclosure, when there is frequency hopping within a time slot, the starting symbol interval between two adjacent hops can be flexibly configured, and is not limited to the number of repeated transmissions R of the SRS configured by the network. For example, when R=2 and the number of pre-configured SRS symbols Ns=4, the repetition interval can be set to 1~4. Due to two hops, the interval between SYS symbols on each hop needs to be greater than 1, so the maximum interval It is 4, and the starting symbol interval of two hops is 1~4.
通过在SRS重复传输中引入第一符号间隔,本公开实施例可以帮助网络侧获得更为准确的上行频偏估计结果。由于在做频偏估计时,求取两列的相关值得到相位Φ,其对应2pi*fd*Δt。这里,时间间隔Δt越大,频偏fd的估计越准确。通过引入这种存在时域上的时间间隔的SRS结构,本公开实施例可以使得基于SRS的频偏估计获得更为准确的结果,进而提升后续频偏预补偿的性能。By introducing the first symbol interval in the repeated transmission of the SRS, the embodiments of the present disclosure can help the network side obtain a more accurate uplink frequency offset estimation result. When doing frequency offset estimation, the correlation value of the two columns is obtained to obtain the phase Φ, which corresponds to 2pi*fd*Δt. Here, the larger the time interval Δt, the more accurate the estimation of the frequency offset fd. By introducing such an SRS structure with time intervals in the time domain, the embodiments of the present disclosure can make the frequency offset estimation based on the SRS obtain more accurate results, thereby improving the performance of subsequent frequency offset precompensation.
另外,由于在高铁等信道更新快的场景下,SRS的主要作用是用于上行的信道测量,其对于精度要求不是很高,因此可以考虑在该场景下增加SRS的RE间隔。相关技术中NR***只支持梳齿因子comb=2或4,如图7左侧所示的comb=2,图7中的每个小方格代表一个RE。本公开实施例可以将梳齿因子设置成大于4的整数,例如每个资源块(resource block,RB)只有一个RE用于SRS传输,如图7右侧所示。In addition, since the main function of SRS is used for uplink channel measurement in scenarios with fast channel update such as high-speed rail, it does not require very high accuracy, so it can be considered to increase the RE interval of SRS in this scenario. In the related art, the NR system only supports comb factor comb=2 or 4. As shown on the left side of FIG. 7, comb=2, and each small square in FIG. 7 represents an RE. In the embodiment of the present disclosure, the comb factor can be set to an integer greater than 4. For example, each resource block (RB) has only one RE for SRS transmission, as shown on the right side of FIG. 7.
具体的,本公开实施例中,所述SRS资源中的相邻资源元素(RE)在频 域上的子载波间隔可以是预定义的值,或者,通过所述第一配置信息进行配置,此时,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔。相应的,在上述步骤32中,所述终端还可以根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。这里,所述子载波间隔可以是大于4的整数。Specifically, in the embodiment of the present disclosure, the subcarrier spacing of adjacent resource elements (RE) in the SRS resource in the frequency domain may be a predefined value, or it may be configured through the first configuration information. At this time, the first configuration information further includes: the subcarrier spacing of adjacent resource elements RE in the SRS resource in the frequency domain. Correspondingly, in the foregoing step 32, the terminal may also determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval. Here, the sub-carrier spacing may be an integer greater than 4.
通过引入SRS较大的子载波间隔,本公开实施例可以提升SRS的容量,特别适应于高铁等用户集中的场景中,其原因在于:By introducing a larger subcarrier interval for SRS, the embodiments of the present disclosure can increase the capacity of SRS, which is particularly suitable for scenarios where users are concentrated, such as high-speed rail. The reasons are:
终端上行发送功率受限,对于边缘用户,为了弥补路损所带来的信道质量变差,需要保证单个RE的功率谱密度。因此,随着SRS的RE密度的降低,在同样的每RE功率谱密度的情况下,探测(sounding)的带宽就会更宽。The uplink transmission power of the terminal is limited. For edge users, in order to compensate for the channel quality deterioration caused by the path loss, the power spectral density of a single RE needs to be guaranteed. Therefore, as the RE density of the SRS decreases, the bandwidth of sounding will be wider with the same power spectral density per RE.
如UE需要sounding 48RB的上行(UL)带宽,由于功率受限,单次只能发送4RB的带宽,comb=2,共24个RE,周期为5ms的话,则需要sounding12次,总共需要60ms才能实现全部带宽的探测。而在RE密度变为1/12,单次发送24个RE的情况下,UE单次可以探测24RB,从而只需要10ms就能完成全部带宽的探测,因此,从时间维度和频域维度可以容纳更多的UE进行sounding,提升了SRS容量,这对于高铁这种用户数目比较多的场景非常有益。If the UE needs sounding 48RB uplink (UL) bandwidth, due to power limitation, only 4RB bandwidth can be sent at a time, comb=2, a total of 24 REs, and a period of 5ms, it needs sounding 12 times, and a total of 60ms is required to achieve Full bandwidth detection. However, when the RE density becomes 1/12 and 24 REs are sent in a single time, the UE can detect 24 RBs at a time, so that it only takes 10ms to complete the detection of the full bandwidth. Therefore, it can accommodate from the time dimension and frequency domain dimension More UEs perform sounding and increase the SRS capacity, which is very beneficial for scenarios with a large number of users such as high-speed rail.
作为一种具体实现,本公开实施例可以通过无线资源控制(Radio Resource Control,RRC)信令配置,在SRS-config中的SRS-resource配置中,引入重复发送符号间隔(所述第一符号间隔)的配置/相邻两跳起始符号间隔(所述第二符号间隔),另外,可以通过RRC信令配置引入SRS传输的相邻RE的频域间隔(所述的子载波间隔),其取值可以是大于4的整数。As a specific implementation, the embodiments of the present disclosure can be configured through radio resource control (Radio Resource Control, RRC) signaling. In the SRS-resource configuration in SRS-config, the repeated transmission symbol interval (the first symbol interval ) Configuration/the adjacent two-hop start symbol interval (the second symbol interval), in addition, the frequency domain interval (the subcarrier interval) of adjacent REs for SRS transmission can be introduced through RRC signaling configuration, which The value can be an integer greater than 4.
请参照图8,本公开实施例提供了一种SRS的接收方法,可以应用于网络设备侧,该网络设备可以是基站或RRH或其他设备,如图8所示,该接收方法包括:Referring to FIG. 8, an embodiment of the present disclosure provides an SRS receiving method, which can be applied to a network device side. The network device may be a base station or an RRH or other device. As shown in FIG. 8, the receiving method includes:
步骤81,网络设备向终端发送SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔。Step 81: The network device sends first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource.
步骤82,所述网络设备根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式。Step 82: The network device determines a mapping manner of the SRS resource in the time slot according to the first symbol interval.
步骤83,所述网络设备根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。Step 83: The network device receives the SRS sent by the terminal according to the mapping manner of the SRS resource in the time slot.
通过以上步骤,本公开实施例的网络设备可以接收具有第一符号间隔的SRS,进而为利用该SRS进行上行频偏估计提供了支持。Through the above steps, the network device of the embodiment of the present disclosure can receive the SRS with the first symbol interval, thereby providing support for using the SRS to estimate the uplink frequency offset.
在上述步骤83之后,网络设备还可以根据接收到的所述SRS的重复符号,进行上行频偏估计,从而可以获得更为准确的频偏估计结果,利用获得频偏估计结果进行发送数据的频偏预补偿处理,可以提升数据译码正确率,提高数据传输效率。After the above step 83, the network device can also perform uplink frequency offset estimation according to the received repetitive symbols of the SRS, so as to obtain a more accurate frequency offset estimation result, and use the obtained frequency offset estimation result to perform the frequency offset estimation of the transmitted data. Partial pre-compensation processing can improve the accuracy of data decoding and improve data transmission efficiency.
类似的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;此时,在上述步骤82中,所述网络设备可以根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;以及,根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。Similarly, when the SRS resource is configured with frequency hopping within a time slot, the first configuration information further includes: the second symbol interval between the start symbols on two adjacent frequency hopping frequency domain resources; In the above step 82, the network device may determine the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop according to the second symbol interval; and, according to the SRS The start symbol of the resource mapping on the frequency hopping resource of each hop and the first symbol interval determine the time domain position of other symbols mapped by the SRS resource on the frequency hopping resource of each hop.
类似的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔可以是预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔。本公开实施例的网络设备,在上述步骤82中,还可以根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。Similarly, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain may be a predefined value, or the first configuration information may further include: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain. In the network device of the embodiment of the present disclosure, in step 82, the frequency domain position of at least one symbol mapped by the SRS resource may also be determined according to the subcarrier interval.
这里,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Here, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
以上介绍了本公开实施例的SRS发送及接收方法。基于以上方法,本公开实施例还提供了实施上述方法的设备。The above describes the SRS sending and receiving methods of the embodiments of the present disclosure. Based on the above method, the embodiments of the present disclosure also provide a device for implementing the above method.
请参照图9,本公开实施例提供了一种终端90,包括:Referring to FIG. 9, an embodiment of the present disclosure provides a terminal 90, including:
接收模块,用于接收网络发送的SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;A receiving module, configured to receive first configuration information of an SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
映射确定模块,用于根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;A mapping determining module, configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;
发送模块,用于根据所述SRS资源在时隙内的映射方式,向网络发送SRS。The sending module is used to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述映射确定模块,还用于根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。The mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop The start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述映射确定模块,还用于根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。The mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
请参照图10,本公开实施例提供的终端的另一结构,该终端1000包括:处理器1001、收发机1002、存储器1003、用户接口1004和总线接口,其中:Please refer to FIG. 10, another structure of a terminal provided by an embodiment of the present disclosure. The terminal 1000 includes a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface, where:
在本公开实施例中,终端1000还包括:存储在存储器上1003并可在处理器1001上运行的程序,程序被处理器1001执行时实现如下步骤:In the embodiment of the present disclosure, the terminal 1000 further includes: a program that is stored in the memory 1003 and can be run on the processor 1001. When the program is executed by the processor 1001, the following steps are implemented:
接收网络发送的SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;Receiving first configuration information of the SRS resource sent by the network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;Determine the mapping mode of the SRS resource in the time slot according to the first symbol interval;
根据所述SRS资源在时隙内的映射方式,向网络发送SRS。According to the mapping mode of the SRS resource in the time slot, the SRS is sent to the network.
在图10中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1001代表的一个或多个处理器和存储器1003代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1002可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口1004还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。In FIG. 10, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The transceiver 1002 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium. For different user equipment, the user interface 1004 may also be an interface that can externally and internally connect the required equipment. The connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.
处理器1001负责管理总线架构和通常的处理,存储器1003可以存储处理器1001在执行操作时所使用的数据。The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1001 when performing operations.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述程序被处理器1003执行时还可实现如下步骤:When the program is executed by the processor 1003, the following steps may also be implemented:
根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;Determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;
根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。According to the start symbol mapped by the SRS resource on the frequency hopping resource of each hop and the first symbol interval, the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述程序被处理器1003执行时还可实现如下步骤:When the program is executed by the processor 1003, the following steps may also be implemented:
根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。According to the subcarrier interval, the frequency domain position of at least one symbol mapped by the SRS resource is determined.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
请参考图11,本公开实施例提供了网络设备110的一结构示意图,该网络设备110包括:Please refer to FIG. 11, an embodiment of the present disclosure provides a schematic structural diagram of a network device 110, and the network device 110 includes:
发送模块,用于向终端发送SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;A sending module, configured to send first configuration information of the SRS resource to the terminal, where the first configuration information includes the first symbol interval between repeated symbols in the SRS resource;
映射确定模块,用于所述网络设备根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;A mapping determination module, configured for the network device to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;
接收模块,用于根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。The receiving module is configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述映射确定模块,还用于根据所述第二符号间隔,确定所述SRS资源 在每跳的跳频资源上映射的起始符号的时域位置;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。The mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop The start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述映射确定模块,还用于根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。The mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
可选的,所述网络设备还包括:Optionally, the network equipment further includes:
频偏估计单元,用于在接收所述终端发送的SRS之后,根据接收到的所述SRS的重复符号,进行上行频偏估计。The frequency offset estimation unit is configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
请参考图12,本公开实施例提供了网络设备的另一结构示意图,包括:处理器1201、收发机1202、存储器1203和总线接口,其中:Please refer to FIG. 12, an embodiment of the present disclosure provides another schematic structural diagram of a network device, including: a processor 1201, a transceiver 1202, a memory 1203, and a bus interface, where:
在本公开实施例中,网络设备1200还包括:存储在存储器上1203并可在处理器1201上运行的程序,所述程序被处理器1201执行时实现如下步骤:In the embodiment of the present disclosure, the network device 1200 further includes: a program that is stored in the memory 1203 and can run on the processor 1201, and when the program is executed by the processor 1201, the following steps are implemented:
向终端发送SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;Sending first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;Determine the mapping mode of the SRS resource in the time slot according to the first symbol interval;
根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。Receiving the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
在图12中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1201代表的一个或多个处理器和存储器1203代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1202可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。In FIG. 12, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1203 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The transceiver 1202 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
处理器1201负责管理总线架构和通常的处理,存储器1203可以存储处理器1201在执行操作时所使用的数据。The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 can store data used by the processor 1201 when performing operations.
可选的,在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;Optionally, when the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
所述程序被处理器1203执行时还可实现如下步骤:When the program is executed by the processor 1203, the following steps may also be implemented:
所述网络设备根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;The network device determines, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;
根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。According to the start symbol mapped by the SRS resource on the frequency hopping resource of each hop and the first symbol interval, the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
可选的,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;Optionally, the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
所述程序被处理器1203执行时还可实现如下步骤:When the program is executed by the processor 1203, the following steps may also be implemented:
根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。According to the subcarrier interval, the frequency domain position of at least one symbol mapped by the SRS resource is determined.
可选的,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。Optionally, the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
可选的,所述程序被处理器1203执行时还可实现如下步骤:Optionally, when the program is executed by the processor 1203, the following steps may also be implemented:
在接收所述终端发送的SRS之后,根据接收到的所述SRS的重复符号,进行上行频偏估计。After receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
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公开的范围。A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of the present disclosure.
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。Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.
在本申请所提供的实施例中,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 embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
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公开实施例方案的目的。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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present disclosure.
另外,在本公开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, the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, 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,本公开的技术方案本质上或者说对相关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)执行本公开各个实施例所述SRS的发送方法或SRS的接收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、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the SRS sending method or the SRS receiving method described in the various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来控制相关的硬件来完成,所述的程序可存储于计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储器(Read-Only Memory,ROM)或随机存取存储器(Random Access Memory,RAM)等。A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by controlling the relevant hardware through a computer program. The program can be stored in a computer readable storage medium. When executed, it may include the processes of the above-mentioned method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
可以理解的是,本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,模块、单元、子单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processor,DSP)、数字信号处理设备 (DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。It can be understood that the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, modules, units, and sub-units can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to implement Described functions in other electronic units or combinations thereof.
对于软件实现,可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。For software implementation, the technology described in the embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.
以上所述,仅为本公开的具体实施方式,但本公开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公开揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本公开的保护范围之内。因此,本公开的保护范围应以权利要求的保护范围为准。The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present disclosure. It should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.
Claims (16)
- 一种探测参考信号SRS的发送方法,应用于终端,包括:A method for sending sounding reference signal SRS, applied to a terminal, includes:接收网络发送的SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;Receiving first configuration information of the SRS resource sent by the network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;Determine the mapping mode of the SRS resource in the time slot according to the first symbol interval;根据所述SRS资源在时隙内的映射方式,向网络发送SRS。According to the mapping mode of the SRS resource in the time slot, the SRS is sent to the network.
- 如权利要求1所述的方法,其中,The method of claim 1, wherein:在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;When the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between the start symbols on two adjacent frequency hopping frequency domain resources;所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval includes:根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;Determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。According to the start symbol mapped by the SRS resource on the frequency hopping resource of each hop and the first symbol interval, the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
- 如权利要求2所述的方法,其中,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;The method according to claim 2, wherein the subcarrier spacing of adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: the SRS The subcarrier spacing of adjacent resource elements RE in the resource in the frequency domain;所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,还包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval further includes:根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。According to the subcarrier interval, the frequency domain position of at least one symbol mapped by the SRS resource is determined.
- 如权利要求3所述的方法,其中,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。The method of claim 3, wherein the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- 一种探测参考信号SRS的接收方法,应用于网络设备,包括:A sounding reference signal SRS receiving method, applied to network equipment, includes:向终端发送SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;Sending first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;Determine the mapping mode of the SRS resource in the time slot according to the first symbol interval;根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。Receiving the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
- 如权利要求5所述的方法,其中,The method of claim 5, wherein:在所述SRS资源配置了时隙内跳频时,所述第一配置信息还包括:相邻两个跳频的频域资源上的起始符号之间的第二符号间隔;When the SRS resource is configured with intra-slot frequency hopping, the first configuration information further includes: a second symbol interval between the start symbols on two adjacent frequency hopping frequency domain resources;所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval includes:根据所述第二符号间隔,确定所述SRS资源在每跳的跳频资源上映射的起始符号的时域位置;Determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;根据所述SRS资源在每跳的跳频资源上映射的起始符号,以及所述第一符号间隔,确定所述SRS资源在每跳的跳频资源上映射的其他符号的时域位置。According to the start symbol mapped by the SRS resource on the frequency hopping resource of each hop and the first symbol interval, the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
- 如权利要求6所述的方法,其中,所述SRS资源中的相邻资源元素RE在频域上的子载波间隔为预定义的值,或者,所述第一配置信息还包括:所述SRS资源中的相邻资源元素RE在频域上的子载波间隔;The method according to claim 6, wherein the subcarrier spacing of adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value, or the first configuration information further includes: the SRS The subcarrier spacing of adjacent resource elements RE in the resource in the frequency domain;所述根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式的步骤,还包括:The step of determining the mapping mode of the SRS resource in the time slot according to the first symbol interval further includes:根据所述子载波间隔,确定所述SRS资源映射的至少一个符号的频域位置。According to the subcarrier interval, the frequency domain position of at least one symbol mapped by the SRS resource is determined.
- 如权利要求7所述的方法,其中,所述第一符号间隔为大于1的整数,和/或,所述子载波间隔为大于4的整数。8. The method of claim 7, wherein the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
- 如权利要求7所述的方法,其中,在接收所述终端发送的SRS的步骤之后,所述方法还包括:The method according to claim 7, wherein after the step of receiving the SRS sent by the terminal, the method further comprises:根据接收到的所述SRS的重复符号,进行上行频偏估计。Perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
- 一种终端,包括:A terminal including:接收模块,用于接收网络发送的探测参考信号SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;A receiving module, configured to receive first configuration information of a sounding reference signal SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;映射确定模块,用于根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;A mapping determining module, configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;发送模块,用于根据所述SRS资源在时隙内的映射方式,向网络发送SRS。The sending module is used to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
- 一种终端,包括收发机和处理器,其中,A terminal including a transceiver and a processor, wherein,所述收发机,用于接收网络发送的探测参考信号SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;The transceiver is configured to receive first configuration information of a sounding reference signal SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;所述处理器,用于根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;The processor is configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;所述收发机,还用于根据所述SRS资源在时隙内的映射方式,向网络发送SRS。The transceiver is also configured to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
- 一种终端,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如权利要求1至4中任一项所述的探测参考信号SRS的发送方法的步骤。A terminal, comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, implements any one of claims 1 to 4 The steps of the method for sending the sounding reference signal SRS.
- 一种网络设备,包括:A network device, including:发送模块,用于向终端发送探测参考信号SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;A sending module, configured to send first configuration information of a sounding reference signal SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;映射确定模块,用于所述网络设备根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;A mapping determination module, configured for the network device to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;接收模块,用于根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。The receiving module is configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
- 一种网络设备,包括收发机和处理器,其中,A network device including a transceiver and a processor, wherein,所述收发机,用于向终端发送探测参考信号SRS资源的第一配置信息,所述第一配置信息包括有SRS资源中的重复符号之间的第一符号间隔;The transceiver is configured to send first configuration information of a sounding reference signal SRS resource to a terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;所述处理器,用于所述网络设备根据所述第一符号间隔,确定所述SRS资源在时隙内的映射方式;The processor is configured to determine, according to the first symbol interval, the mapping mode of the SRS resource in the time slot;所述收发机,还用于根据所述SRS资源在时隙内的映射方式,接收所述终端发送的SRS。The transceiver is further configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
- 一种网络设备,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如权利要求5至9中任一项所述的探测参考信号SRS的接收方法的步骤。A network device, comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor. The program is executed by the processor to implement any one of claims 5 to 9 The steps of the sounding reference signal SRS receiving method described in the item.
- 一种计算机可读存储介质,所述计算机可读存储介质上存储有计算 机程序,所述计算机程序被处理器执行时实现如权利要求1至9中任一项所述方法的步骤。A computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are realized.
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CN109802810A (en) * | 2017-11-17 | 2019-05-24 | 华为技术有限公司 | The method and apparatus for sending detection reference signal SRS |
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US20170048717A1 (en) * | 2015-08-13 | 2017-02-16 | Samsung Electronics Co., Ltd. | Method and apparatus for communication in wireless communication system |
CN107135053B (en) * | 2016-02-26 | 2019-08-16 | 北京佰才邦技术有限公司 | Transmission method, device and the terminal of detection reference signal |
CN106788927B (en) * | 2016-05-13 | 2019-09-17 | 北京展讯高科通信技术有限公司 | The sending method and device of SRS |
CN108632005B (en) * | 2017-03-24 | 2023-12-15 | 华为技术有限公司 | Reference signal transmission method, device and system |
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WO2019098712A1 (en) * | 2017-11-16 | 2019-05-23 | 엘지전자 주식회사 | Method for transmitting and receiving srs, and communication apparatus therefor |
CN109802810A (en) * | 2017-11-17 | 2019-05-24 | 华为技术有限公司 | The method and apparatus for sending detection reference signal SRS |
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