WO2022151391A1 - 一种发送频率调整方法及装置 - Google Patents

一种发送频率调整方法及装置 Download PDF

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Publication number
WO2022151391A1
WO2022151391A1 PCT/CN2021/072261 CN2021072261W WO2022151391A1 WO 2022151391 A1 WO2022151391 A1 WO 2022151391A1 CN 2021072261 W CN2021072261 W CN 2021072261W WO 2022151391 A1 WO2022151391 A1 WO 2022151391A1
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WIPO (PCT)
Prior art keywords
terminal device
trp
frequency adjustment
access network
uplink
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PCT/CN2021/072261
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English (en)
French (fr)
Inventor
李可
李翔
赵泽涵
戴喜增
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202180064605.5A priority Critical patent/CN116210172A/zh
Priority to PCT/CN2021/072261 priority patent/WO2022151391A1/zh
Publication of WO2022151391A1 publication Critical patent/WO2022151391A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a method and apparatus for adjusting a transmission frequency.
  • the center frequency of the received signal may have an offset relative to the center frequency of the transmitted signal, and the offset value of the center frequency may be referred to as the Doppler shift.
  • the wireless access network equipment can send a tracking reference signal (TRS) to the terminal equipment through TRP, and the terminal equipment can estimate the downlink Doppler frequency shift according to the received TRS, and according to the estimated downlink Doppler frequency
  • TRS tracking reference signal
  • the frequency shift determines the uplink transmission frequency
  • the uplink transmission frequency is used to send a demodulation reference signal (DMRS) to the TRP.
  • DMRS demodulation reference signal
  • the wireless access network equipment can estimate the uplink Doppler frequency shift according to the DMRS received by the TRP, and quantify the uplink Doppler frequency shift according to a certain ratio to obtain a frequency adjustment (frequency adjustment, FA) value, and the FA is determined by the TRP.
  • the value is sent to the terminal device, so that the terminal device can adjust the uplink transmission frequency according to the FA value, so as to reduce the Doppler frequency shift of the uplink signal received by the TRP.
  • the radio access network device when the radio access network device includes multiple TRPs and uses multiple TRPs to communicate with the terminal device, the radio access network device sends multiple TRSs to the terminal device through the multiple TRPs.
  • the relative movement speed may be different, so that the terminal device cannot determine the uplink transmission frequency according to the received multiple TRS, so the wireless access network device cannot estimate the uplink Doppler frequency shift, and thus cannot determine the FA value, so that the terminal device cannot determine the FA value according to the FA value.
  • Adjusting the uplink transmission frequency cannot reduce the Doppler frequency shift of the uplink signals received by multiple TRPs at the same time.
  • the Doppler frequency shift of the uplink signals received by the TRP is large, it may exceed the wireless access network equipment.
  • the capability of estimating the uplink Doppler frequency shift results in the inability of the radio access network device to correctly track the center frequency of the received uplink signal, which reduces the demodulation performance of the radio access network device.
  • the present application provides a transmission frequency adjustment method and device, which can improve the existing multi-TRP communication scenarios, because the terminal equipment cannot determine the uplink transmission frequency according to the received multiple TRS, so that the terminal equipment cannot adjust the uplink transmission frequency. It is a technical problem that the wireless access network equipment cannot correctly track the center frequency of the uplink signal received by the TRP, and the demodulation performance of the wireless access network equipment is degraded.
  • an embodiment of the present application provides a transmission frequency adjustment method, the method includes: a terminal device measures tracking reference signals TRS respectively sent by multiple transmission and reception points TRP, and determines an uplink transmission frequency according to the reference TRP; wherein, Different TRPs correspond to different TRSs; the reference TRP is one of multiple TRPs; the terminal device sends an uplink signal at the uplink transmission frequency, and receives a frequency adjustment FA command from the reference TRP; wherein, the FA command is used to indicate a frequency adjustment parameter; The frequency adjustment parameter is determined according to the uplink signal; the terminal device adjusts the uplink transmission frequency according to the FA command.
  • the terminal device can make the wireless access network device estimate the uplink Doppler frequency shift according to the uplink transmission frequency , and then determine the frequency adjustment parameter.
  • the terminal equipment can reduce the Doppler frequency shift of the uplink signals received by multiple TRPs at the same time, so that the wireless access network equipment can correctly track the receiving frequency.
  • the center frequency of the received uplink signal improves the demodulation performance of the wireless access network equipment.
  • the terminal device receives the first identification information used to indicate the reference TRP from the radio access network device.
  • the terminal device can determine the reference TRP according to the first identification information sent by the radio access network device, which provides a feasible solution for the terminal device to determine the reference TRP.
  • the terminal device measures downlink reference signals respectively sent by multiple TRPs; and determines the reference TRP according to the measurement results of the multiple downlink reference signals.
  • the terminal device can also determine the reference TRP according to the measurement result of the downlink reference signal, which provides a feasible solution for the terminal device to determine the reference TRP.
  • the measurement result of the downlink reference signal includes one or more of the following: signal strength and Doppler frequency shift.
  • the terminal device determines, according to the signal strengths of multiple downlink reference signals, the TRP corresponding to the downlink reference signal with the strongest signal strength as the reference TRP.
  • the terminal device determines the TRP corresponding to the downlink reference signal with the largest Doppler frequency shift as the reference TRP according to the Doppler frequency shifts of multiple downlink reference signals.
  • the terminal device can determine the reference TRP according to the signal strength or the Doppler frequency shift, which is not limited.
  • the terminal device sends second identification information used to indicate the reference TRP corresponding to the terminal device.
  • the terminal device may also send the second identification information to the radio access network device, so as to indicate the reference TRP corresponding to the terminal device to the radio access network device.
  • the frequency adjustment parameter includes a pre-compensation coefficient; or, the frequency adjustment parameter includes an index of the pre-compensation coefficient; wherein the pre-compensation coefficient is one of a preset pre-compensation coefficient value set; or, the frequency adjustment Parameters include frequency adjustment values.
  • the frequency adjustment parameter may be a pre-compensation coefficient, a parameter of the pre-compensation coefficient, or a frequency adjustment value, which provides a feasible solution for the frequency adjustment parameter.
  • the frequency adjustment parameter is the pre-compensation coefficient or the index of the pre-compensation coefficient, signaling overhead can be reduced.
  • the terminal device also receives the FA command sent by one or more TRPs other than the reference TRP among the multiple TRPs.
  • the terminal device when the terminal device receives the frequency adjustment FA command sent by the radio access network device through the reference TRP, it can also receive the radio access network through one or more TRPs other than the reference TRP among the multiple TRPs.
  • the FA command sent by the device improves the reliability of the terminal device receiving the FA command.
  • an embodiment of the present application provides a communication device, which can implement the functions performed by the terminal device in the first aspect or a possible design of the first aspect, and the functions can be implemented by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions. For example, a processing module and a transceiver module; the processing module is coupled with the transceiver module.
  • the processing module is used to measure the tracking reference signal TRS sent by the multiple transmission and reception points TRP respectively, and determine the uplink transmission frequency according to the reference TRP; wherein, different TRPs correspond to different TRSs; the reference TRP is one of the multiple TRPs;
  • the transceiver module is used to send the uplink signal at the uplink transmission frequency, and receive the frequency adjustment FA command from the reference TRP; wherein, the FA command is used to indicate the frequency adjustment parameter; the frequency adjustment parameter is determined according to the uplink signal; the processing module is also used for according to FA command to adjust the uplink transmission frequency.
  • an embodiment of the present application provides a communication device, and the communication device may be a communication device or a chip or a system-on-chip in the communication device.
  • the communication apparatus can implement the functions performed by the terminal equipment in the above aspects or possible designs, and the functions can be implemented by hardware.
  • the communication device may include: a processor and a transceiver. The processor and the transceiver may be used to support the communication device to implement the functions involved in the first aspect or any possible design of the first aspect.
  • the processor can be used to measure the tracking reference signals TRS respectively sent by multiple transmission and reception points TRP, and determine the uplink transmission frequency according to the reference TRP; wherein, different TRPs correspond to different TRSs; the reference TRP is one of the multiple TRPs One; the transceiver can be used to send the uplink signal at the uplink transmission frequency, and receive the frequency adjustment FA command from the reference TRP; wherein, the FA command is used to indicate the frequency adjustment parameter; the frequency adjustment parameter is determined according to the uplink signal; the processor can also use To adjust the uplink transmission frequency according to the FA command.
  • the communication apparatus may further include a memory for storing necessary computer-executed instructions and data of the terminal device. When the communication device is in operation, the transceiver and processor execute the computer-implemented instructions stored in the memory to cause the communication device to perform the transmission frequency as described in the first aspect above or any possible design of the first aspect adjustment method.
  • an embodiment of the present application provides a method for adjusting a transmission frequency.
  • the method includes: a wireless access network device sends a tracking reference signal TRS to a terminal device through a plurality of transmission and reception points TRP, and receives an uplink from the terminal device. signal; wherein, different TRPs correspond to different TRSs, and the uplink transmission frequency of the uplink signal is determined according to the reference TRP; the reference TRP is one of multiple TRPs; the radio access network equipment determines the frequency adjustment parameter according to the uplink signal, and passes the reference The TRP sends a frequency adjustment FA command to the terminal device, wherein the FA command is used to indicate frequency adjustment parameters.
  • the wireless access network device sends TRS to the terminal device through multiple TRPs, so that the terminal device can use one of the multiple TRPs as a reference TRP, and determine the uplink transmission frequency according to the reference TRP, and the wireless access network
  • the device can estimate the uplink Doppler frequency shift according to the uplink transmission frequency, and then determine the frequency adjustment parameter, so that the terminal device can adjust the uplink transmission frequency according to the frequency adjustment parameter, which can reduce the frequency of uplink signals received by multiple TRPs at the same time.
  • Doppler frequency shift enables the wireless access network equipment to correctly track the center frequency of the received uplink signal and improves the demodulation performance of the wireless access network equipment.
  • the radio access network device sends the first identification information for indicating the reference TRP to the terminal device.
  • the radio access network device can send the first identification information to the terminal device, so that the terminal device determines the reference TRP according to the first identification information, which provides a feasible solution for the terminal device to determine the reference TRP.
  • the radio access network device receives second identification information from the terminal device that is used to indicate the reference TRP corresponding to the terminal device.
  • the radio access network device may determine the reference TRP corresponding to the terminal device according to the second identification information sent by the terminal device.
  • the frequency adjustment parameter includes a pre-compensation coefficient; or, the frequency adjustment parameter includes an index of the pre-compensation coefficient; wherein the pre-compensation coefficient is one of a preset pre-compensation coefficient value set; or, the frequency adjustment Parameters include frequency adjustment values.
  • the frequency adjustment parameter may be a pre-compensation coefficient, a parameter of the pre-compensation coefficient, or a frequency adjustment value, which provides a feasible solution for the frequency adjustment parameter.
  • the frequency adjustment parameter is the pre-compensation coefficient or the index of the pre-compensation coefficient, signaling overhead can be reduced.
  • the radio access network device also sends the FA command to the terminal device through one or more TRPs other than the reference TRP among the multiple TRPs.
  • the wireless access network device when the wireless access network device sends the FA command to the terminal device through the reference TRP, it can also send the FA command to the terminal device through one or more TRPs other than the reference TRP among the multiple TRPs, so as to improve the The reliability of the terminal device receiving FA commands.
  • an embodiment of the present application provides a communication device, which can implement the functions performed by the wireless access network equipment in the fourth aspect or a possible design of the fourth aspect, and the functions can be performed by hardware corresponding to software implementation.
  • the hardware or software includes one or more modules corresponding to the above functions. For example, a transceiver module and a processing module; the transceiver module is coupled with the processing module.
  • the transceiver module is used to send the tracking reference signal TRS to the terminal equipment through a plurality of transmission and reception points TRP respectively, and receive the uplink signal from the terminal equipment; wherein, different TRPs correspond to different TRSs; the uplink transmission frequency of the uplink signal is based on the reference TRP Determine; the reference TRP is one of multiple TRPs; the processing module is used to determine the frequency adjustment parameter according to the uplink signal; the transceiver module is also used to send the frequency adjustment FA command to the terminal device through the reference TRP; wherein, the FA command is used for Indicates the frequency adjustment parameter.
  • an embodiment of the present application provides a communication device, where the communication device may be a communication device or a chip or a system-on-chip in the communication device.
  • the communication apparatus may implement the functions performed by the radio access network equipment in the above aspects or possible designs, and the functions may be implemented by hardware.
  • the communication device may include: a transceiver and a processor. The transceiver and the processor may be used to support the communication device to implement the functions involved in the fourth aspect or any of the possible designs of the fourth aspect.
  • the transceiver can be used to send the tracking reference signal TRS to the terminal equipment through multiple transmission and reception points TRP respectively, and receive the uplink signal from the terminal equipment; wherein, different TRPs correspond to different TRSs; the uplink transmission frequency of the uplink signal is based on The reference TRP is determined; the reference TRP is one of multiple TRPs; the processor can be used to determine the frequency adjustment parameter according to the uplink signal; the transceiver can also be used to send a frequency adjustment FA command to the terminal device through the reference TRP; wherein, the FA command Used to indicate frequency adjustment parameters.
  • the communication apparatus may further include a memory for storing necessary computer-executed instructions and data of the wireless access network device. When the communication device is in operation, the transceiver and processor execute the computer-executable instructions stored in the memory to cause the communication device to perform the transmission frequency as described in the fourth aspect above or any possible design of the fourth aspect adjustment method.
  • a communication device comprising one or more processors, one or more processors for running a computer program or instructions, when the one or more processors execute the computer instructions or instructions , so that the communication device executes the transmission frequency adjustment method described in the first aspect or any possible design of the first aspect; or executes the transmission frequency adjustment method described in the fourth aspect or any possible design of the fourth aspect .
  • the communication device further includes one or more communication interfaces; the one or more communication interfaces are coupled with one or more processors, and the one or more communication interfaces are used to communicate with other modules outside the communication device to communicate.
  • the communication device further includes one or more memories coupled with one or more processors, and the one or more memories are used to store the above-mentioned computer programs or instructions.
  • the memory is located outside the communication device. In another possible implementation, the memory is located within the communication device.
  • the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.
  • a communication device in an eighth aspect, includes an interface circuit and a logic circuit; the interface circuit is coupled with the logic circuit; the logic circuit is used to perform the first aspect or any possible design of the first aspect.
  • a computer-readable storage medium stores computer instructions or programs, and when the computer instructions or programs are executed on a computer, the computer executes the first aspect or the first aspect.
  • the transmission frequency adjustment method described in any possible design, or the transmission frequency adjustment method described in the fourth aspect or any possible design of the fourth aspect is performed.
  • a tenth aspect provides a computer program product comprising computer instructions that, when run on a computer, cause the computer to perform the transmission frequency adjustment method described in the first aspect or any possible design of the first aspect, or The transmission frequency adjustment method described in the fourth aspect or any possible design of the fourth aspect is performed.
  • an embodiment of the present application provides a computer program, which, when run on a computer, causes the computer to execute the transmission frequency adjustment method described in the first aspect or any possible design of the first aspect, or execute The transmission frequency adjustment method according to the fourth aspect or any possible design of the fourth aspect.
  • a twelfth aspect provides a communication system, the communication system comprising the terminal device according to any one of the second to third aspects and the wireless interface according to any one of the fifth to sixth aspects access equipment.
  • FIG. 1a is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 1b is a flowchart of an existing transmission frequency adjustment method provided by an embodiment of the application.
  • FIG. 1c is a schematic diagram of a frame structure of a random access sequence provided by an embodiment of the present application.
  • 1d is a schematic diagram of a frame structure of a DMRS provided by an embodiment of the present application.
  • FIG. 1e is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the composition of a communication device according to an embodiment of the present application.
  • FIG. 3 is a flowchart of a method for adjusting a transmission frequency provided by an embodiment of the present application
  • FIG. 4 is a schematic diagram of communication between a TRS and a terminal device according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of a frame structure of a TRS provided by an embodiment of the present application.
  • FIG. 6 is a graph of a correspondence between a Doppler frequency shift and a pre-compensation coefficient according to an embodiment of the present application
  • FIG. 7 is a schematic diagram of the composition of a terminal device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the composition of a wireless access network device according to an embodiment of the present application.
  • Doppler shift When there is relative motion between the sending device and the receiving device, when the sending device communicates with the receiving device, the center frequency of the received signal may be offset relative to the center frequency of the sent signal.
  • the offset value may be referred to as the Doppler shift.
  • f d the Doppler frequency shift
  • v the relative motion speed
  • c the speed of light
  • f c the center frequency of the transmitted signal.
  • the Doppler frequency shift is positive; when the receiving device moves away from the transmitting device, the Doppler frequency shift is negative.
  • TRP1 can send The terminal equipment transmits a downlink signal with a center frequency of fc (for example, a tracking reference signal (TRS)). Due to the relative motion between the terminal equipment and TRP1, the center frequency of the downlink signal received by the terminal equipment may change. is f c +f d1 , where f d1 is the downlink Doppler frequency shift.
  • TRS tracking reference signal
  • the terminal device After receiving the downlink signal, the terminal device can send an uplink signal (for example, a physical uplink shared channel (PUSCH), a physical uplink control channel (physical uplink control channel) to TRP1 based on the center frequency f c +f d1 of the downlink signal channel, PUCCH)), due to the relative motion between the terminal device and the TRP1, the center frequency of the uplink signal received by the TRP1 may become f c +2f d1 , where 2f d1 is the uplink Doppler frequency shift.
  • f d2 and 2f d2 are the downlink Doppler frequency shift and the uplink Doppler frequency shift of the terminal equipment corresponding to TRP2, respectively.
  • the wireless access network equipment communicates with the terminal equipment through the TRP, if the Doppler frequency shift of the uplink signal received by the TRP is large, it may exceed the wireless access network equipment.
  • the capability of estimating the uplink Doppler frequency shift results in the inability of the radio access network device to correctly track the center frequency of the received uplink signal, which reduces the demodulation performance of the radio access network device.
  • the wireless access network device can use the following steps 101 to 110 to send a frequency adjustment (FA) command to the terminal device, so that the terminal device can adjust the uplink transmission according to the FA command. frequency, thereby reducing the Doppler frequency shift of the uplink signal received by the TRP and improving the demodulation performance of the wireless access network equipment.
  • FA frequency adjustment
  • Step 101 The terminal device sends a random access sequence to the radio access network device.
  • the terminal device may send the random access sequence to the radio access network device through the random access channel and through the TRP.
  • Step 102 The radio access network device estimates the initial Doppler frequency shift according to the random access sequence.
  • the random access sequence may include a cyclic prefix (cyclic prefix, CP) and N repeated Time domain sequence r; wherein, the length of each time domain sequence r is M; based on the random access sequence, the radio access network device can estimate the initial Doppler frequency shift according to the following formula:
  • f d is the initial Doppler frequency shift
  • t is the time interval between the initial samples of two adjacent sequences r, and the unit can be seconds
  • L cp is the number of samples of CP.
  • Step 103 The wireless access network device determines the FA value according to the initial Doppler frequency shift.
  • the radio access network device may quantify the initial Doppler frequency shift according to a certain ratio to obtain the FA value.
  • n E.g, The initial Doppler frequency shift; wherein, n can be pre-specified by the communication protocol, or can be customized by the wireless access network device, which is not limited.
  • Step 104 The wireless access network device sends an FA command carrying the FA value to the terminal device.
  • the wireless access network device may send the FA command carrying the FA value to the terminal device through TRP.
  • the radio access network device may send the FA command to the terminal device through random access response (random access response, RAR) signaling or media access control (media access control, MAC) signaling and other signaling.
  • random access response random access response
  • MAC media access control
  • Step 105 The terminal device adjusts the uplink transmission frequency according to the FA command.
  • the terminal device may determine the FA value according to the FA command, and determine the difference between the current uplink transmission frequency and the FA value as the adjusted uplink transmission frequency.
  • the terminal device can adjust the uplink transmission frequency from f c +f d to f c +f d -FA value according to the received FA command.
  • Step 106 The terminal device sends an uplink signal to the wireless access network device according to the adjusted uplink transmission frequency.
  • the uplink signal may include a demodulation reference signal (demodulation reference signal, DMRS).
  • DMRS demodulation reference signal
  • the uplink signal may be PUCCH, PUSCH, etc., which is not limited.
  • the terminal device may use the adjusted uplink transmission frequency to send the uplink signal to the wireless access network device through TRP.
  • Step 107 The radio access network device estimates the Doppler frequency shift according to the uplink signal.
  • the radio access network equipment may estimate the Doppler frequency shift according to the DMRS in the uplink signal.
  • t may be the time interval of the respective OFDM symbols where each column of DMRSs is located, and the unit may be seconds.
  • the maximum Doppler frequency shift that can be estimated by the radio access network device is related to the interval of the DMRS.
  • Step 108 The wireless access network device determines the FA value according to the Doppler frequency shift.
  • the specific process for the wireless access network device to determine the FA value according to the Doppler frequency shift may refer to the foregoing step 103, which will not be repeated.
  • Step 109 The wireless access network device sends an FA command carrying the FA value to the terminal device.
  • the wireless access network device may send the FA command to the terminal device through PDSCH or MAC when the variation of the FA value exceeds the preset threshold.
  • the wireless access network device may send a message to the terminal when the difference between FA1 and FA2 exceeds a preset threshold.
  • the device sends the FA command.
  • Step 110 The terminal device adjusts the uplink transmission frequency according to the FA command.
  • step 110 may refer to the above-mentioned step 105, which will not be repeated.
  • the wireless access network device can send multiple TRSs to the terminal device through the multiple TRPs, and the terminal device cannot determine the uplink transmission frequency according to the multiple TRSs received, resulting in the wireless access network.
  • the network access device cannot estimate the uplink Doppler frequency shift, and thus cannot determine the FA value, so that the terminal device cannot adjust the uplink transmission frequency according to the FA value, and cannot simultaneously reduce the Doppler frequency shift of the uplink signals received by multiple TRPs.
  • the Doppler frequency shift of the uplink signal received by the wireless access network equipment is large, it may exceed the ability of the wireless access network equipment to estimate the uplink Doppler frequency shift, so that the wireless access network equipment cannot correctly track the received signal.
  • the center frequency of the uplink signal which degrades the demodulation performance of the wireless access network equipment.
  • an embodiment of the present application provides a transmission frequency adjustment method, in which the terminal device can measure the TRSs sent by multiple TRPs respectively, and determine the uplink transmission frequency according to the reference TRP; different TRPs correspond to different TRSs; reference TRP is one of multiple TRPs; the terminal device can also send uplink signals at the uplink transmission frequency; and receives the FA command from the reference TRP, and adjusts the uplink transmission frequency according to the FA command; wherein, the FA command is used to indicate the frequency Adjustment parameters; frequency adjustment parameters are determined according to the uplink signal.
  • the terminal device uses one TRP among multiple TRPs as a reference TRP and determines the uplink transmission frequency according to the reference TRP, so that the wireless access network device can estimate the uplink Doppler frequency according to the uplink transmission frequency
  • the terminal equipment can reduce the Doppler frequency shift of the uplink signals received by multiple TRPs at the same time, so that the wireless access network equipment can correctly track The center frequency of the received uplink signal improves the demodulation performance of the wireless access network equipment.
  • the transmission frequency adjustment method provided in the embodiments of the present application can be used in any communication system, and the communication system can be a third generation partnership project (3GPP) communication system, for example, long term evolution (LTE)
  • 3GPP third generation partnership project
  • LTE long term evolution
  • the system can also be the fifth generation (5G) mobile communication system, the new radio (NR) system, the new radio (vehicle to everything, NR V2X) system, and can also be applied to LTE and 5G hybrid systems
  • 5G fifth generation
  • NR new radio
  • NR V2X new radio
  • LTE and 5G hybrid systems In networked systems, or device-to-device (D2D) communication systems, machine-to-machine (M2M) communication systems, Internet of Things (IoT), and other next-generation communications
  • D2D device-to-device
  • M2M machine-to-machine
  • IoT Internet of Things
  • the system may also be a non-3GPP communication system, which is not limited.
  • the sending frequency adjustment method provided in the embodiment of the present application can be applied to various communication scenarios, for example, can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable low-latency communication Communication scenarios such as (ultra reliable low latency communication, URLLC), machine type communication (MTC), massive machine type communication (mMTC), D2D, V2X, IoT, high-speed rail communication, etc. are not limited .
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency communication
  • MTC machine type communication
  • mMTC massive machine type communication
  • D2D V2X
  • IoT high-speed rail communication
  • FIG. 1e is a schematic diagram of a communication system provided by an embodiment of the application.
  • the communication system may include terminal equipment and wireless access network equipment.
  • the wireless access network device may be connected to the terminal device through a plurality of TRPs for communication.
  • the terminal equipment in FIG. 1e may be located within the beam/cell coverage of the radio access network equipment.
  • the terminal device may perform air interface communication with the radio access network device through an uplink (uplink, UL) or a downlink (downlink, DL).
  • uplink uplink
  • UL uplink
  • DL downlink
  • the terminal device can send uplink data to the radio access network device through the uplink physical layer shared channel (PUSCH); in the DL direction, the radio access network device can pass the downlink physical layer A layer shared channel (physical downlink shared channel, PDSCH) sends downlink data to terminal equipment.
  • PUSCH uplink physical layer shared channel
  • PDSCH physical downlink shared channel
  • the terminal device (terminal) in FIG. 1e may be a terminal device supporting a new air interface, and may access the communication system through the air interface, and initiate services such as calling and surfing the Internet.
  • the terminal equipment may also be referred to as user equipment (user equipment, UE), or a mobile station (mobile station, MS) or a mobile terminal (mobile terminal, MT).
  • the terminal device in FIG. 1b may be a mobile phone (mobile phone), a tablet computer or a computer with a wireless transceiver function. It can also be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, and a wireless terminal in smart grid.
  • VR virtual reality
  • AR augmented reality
  • terminals wireless terminals in smart cities, wireless terminals in smart homes, in-vehicle terminals, vehicles with vehicle-to-vehicle (V2V) communication capabilities, intelligent networked vehicles, There are no restrictions on UAVs with UAV to UAV (U2U) communication capabilities.
  • V2V vehicle-to-vehicle
  • the wireless radio access network device in FIG. 1e can be any device with wireless transceiver function, which is mainly used to realize functions such as wireless physical control function, resource scheduling and wireless resource management, wireless access control and mobility management, etc. Reliable wireless transmission protocol and data encryption protocol, etc.
  • the wireless access network device may be a device supporting wired access or a device supporting wireless access.
  • the radio access network device may be an access network (access network, AN)/radio access network (radio access network, RAN) device, which is composed of multiple 5G-AN/5G-RAN nodes.
  • 5G-AN/5G-RAN nodes can be: access point (AP), base station (nodeB, NB), enhanced base station (enhance nodeB, eNB), next-generation base station (NR nodeB, gNB), transmission and reception A transmission reception point (TRP), a transmission point (TP), or some other access node, etc.
  • each terminal device and wireless access network device may adopt the composition structure shown in FIG. 2 , or include the components shown in FIG. 2 .
  • FIG. 2 is a schematic diagram of the composition of a communication apparatus 200 according to an embodiment of the present application.
  • the communication apparatus 200 may be a terminal device or a chip or a system-on-chip in the terminal device; it may also be a wireless access network device or a wireless access network device chip or system-on-chip.
  • the communication device 200 includes a processor 201 , a transceiver 202 and a communication line 203 .
  • the communication apparatus 200 may further include a memory 204 .
  • the processor 201 , the memory 204 and the transceiver 202 may be connected through a communication line 203 .
  • the processor 201 is a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processing (DSP), a microprocessor, a microcontroller, Programmable logic device (PLD) or any combination thereof.
  • the processor 201 may also be other apparatuses having processing functions, such as circuits, devices or software modules, which are not limited.
  • Transceiver 202 for communicating with other devices or other communication networks.
  • the other communication network may be Ethernet, radio access network (RAN), wireless local area networks (WLAN) and the like.
  • Transceiver 202 may be a module, circuit, transceiver, or any device capable of enabling communication.
  • the communication line 203 is used to transmit information between components included in the communication device 200 .
  • Memory 204 for storing instructions.
  • the instructions may be computer programs.
  • the memory 204 may be a read-only memory (ROM) or other types of static storage devices that can store static information and/or instructions, or a random access memory (RAM) or a random access memory (RAM).
  • ROM read-only memory
  • RAM random access memory
  • RAM random access memory
  • RAM random access memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • CD- ROM compact disc read-only memory
  • optical disc storage including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • the memory 204 may exist independently of the processor 201 , or may be integrated with the processor 201 .
  • the memory 204 may be used to store instructions or program code or some data or the like.
  • the memory 204 may be located in the communication device 200, or may be located outside the communication device 200, which is not limited.
  • the processor 201 is configured to execute the instructions stored in the memory 204 to implement the sending frequency adjustment method provided by the following embodiments of the present application.
  • the processor 201 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 2 .
  • the communication apparatus 200 includes a plurality of processors, for example, in addition to the processor 201 in FIG. 2 , a processor 207 may also be included.
  • the communication apparatus 200 further includes an output device 205 and an input device 206 .
  • the input device 206 is a device such as a keyboard, a mouse, a microphone or a joystick
  • the output device 205 is a device such as a display screen, a speaker, and the like.
  • the communication apparatus 200 may be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system or a device with a similar structure in FIG. 2 .
  • the composition shown in FIG. 2 does not constitute a limitation on the communication device.
  • the communication device may include more or less components than those shown in the figure, or combine some components , or a different component arrangement.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • actions, terms, etc. involved in the various embodiments of the present application can be referred to each other, and are not limited.
  • the names of the messages or the names of parameters in the messages exchanged between the devices are just an example, and other names may also be used in the specific implementation, which is not limited.
  • the terminal device may be any terminal device in the communication system shown in FIG. 1e
  • the network device may be any wireless access network device in the communication system shown in FIG. 1e. Both the terminal device and the wireless access network device described in the following embodiments may have the components shown in FIG. 2 .
  • FIG. 3 is a flowchart of a method for adjusting a transmission frequency provided by an embodiment of the present application. As shown in FIG. 3 , the method may include:
  • Step 301 The wireless access network device sends TRS to the terminal device respectively through multiple TRPs.
  • TRPs correspond to different TRSs.
  • the TRS may be a 1-port channel state information reference signal (channel state information reference signal, CSI-RS) resource with a density of 3, and the TRS symbol interval in a time slot is 4.
  • the upper layer can configure a CSI-RS resource set containing 4 periodic CSI-RS resources for the terminal equipment. These 4 CSI-RS resources are distributed in two consecutive time slots, and each time slot contains two Periodic CSI-RS resources, and the positions of the CSI-RS resources in the two time slots are the same in the time domain.
  • the higher layer can configure a CSI-RS resource set for the terminal device that includes two periodic CSI-RS distributed in one time slot, or configure a CSI-RS resource set that includes four periodic CSI-RS distributed in two consecutive time slots - A CSI-RS resource set of RS resources, each time slot contains two periodic CSI-RS resources, and the CSI-RS resources in the two time slots are located in the same time domain.
  • the wireless access network device can send TRS1 with a center frequency f c to the terminal device through TRP1, or can send a TRS2 with a center frequency f c to the terminal device through TRP2. .
  • the TRS may be carried in the physical downlink shared channel (physical downlink shared channel, PDSCH) or the physical downlink control channel (physical downlink control channel, PDCCH), Sent to the terminal device via TRP.
  • PDSCH physical downlink shared channel
  • PDCCH physical downlink control channel
  • Step 302 The terminal device determines the uplink transmission frequency according to the reference TRP.
  • the terminal device may obtain TRSs respectively sent by multiple TRPs through measurement, and determine one TRP among the multiple TRPs as the reference TRP.
  • the terminal device receives the first identification information from the radio access network device; wherein the first identification information is used to indicate the reference TRP.
  • the first identification information may be identification information such as an ID of the reference TRP, an IP address, etc., which may be used to indicate the reference TRP, which is not limited.
  • the wireless access network device may, according to a certain plan, divide the network into multiple coverage areas, designate a TRP as the reference TRP for the divided coverage areas, and send the first identification information corresponding to the reference TRP to the reference TRP. Terminal devices within coverage.
  • the terminal device may also send its own location information to the wireless access network device, so that the wireless access network device determines the reference TRP corresponding to the terminal device according to the location information of the terminal device, and sends the reference TRP to the terminal device. corresponding first identification information.
  • the terminal device may also measure the downlink reference signals sent by the radio access network device through multiple TRPs, obtain the signal strength of the downlink reference signals corresponding to each TRP, and calculate the signal strength of the downlink reference signals corresponding to each TRP.
  • the signal strength is sent to the wireless access network equipment, and the wireless access network equipment determines the reference TRP corresponding to the terminal equipment according to the signal strength of each downlink reference signal corresponding to the terminal equipment, and sends the first identification information corresponding to the reference TRP to the terminal equipment.
  • the radio access network device may determine, among the downlink reference signals corresponding to the terminal device, the TRP corresponding to the downlink reference signal with the highest signal strength as the reference TRP corresponding to the terminal device.
  • the downlink reference signal is a reference signal such as TRS, CSI-RS, DMRS, and synchronization signal (synchronization signal, SS), which is not limited.
  • the terminal device can use the reference signal received power (reference signal received power, RSRP), reference signal received quality (reference signal received quality, RSRQ), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), etc. Based on the parameter indicating the signal strength, the signal strength of the downlink reference signal is determined.
  • reference signal received power reference signal received power
  • RSRQ reference signal received quality
  • SINR signal to interference plus noise ratio
  • the terminal equipment can measure the received TRS1, TRS2, and TRS3 to obtain the signal strength of TRS1, the signal strength of TRS2, and the signal strength of TRS2.
  • the wireless access network device can determine the TRP1 corresponding to TRS1 as the reference TRP corresponding to the terminal device, and send the first identification information corresponding to TRP1 to the terminal device.
  • the terminal device may also send the magnitude relationship between the signal strengths of each downlink reference signal to the radio access network device according to the signal strength of each downlink reference signal, and the radio access network device determines the reference according to the magnitude relationship. TRP.
  • the terminal device can send the magnitude relationship to the radio access network device, and the radio access network device can send the magnitude relationship to the radio access network device according to For the size relationship, the TRP corresponding to TRS1 is determined as the reference TRP corresponding to the terminal device, and the first identification information corresponding to the reference TRP is sent to the terminal device.
  • the terminal equipment can also perform Doppler shift estimation on the downlink reference signals sent by the wireless access network equipment through multiple TRPs, obtain the Doppler frequency shifts of the downlink reference signals corresponding to each TRP, and assign each TRP corresponding to the Doppler frequency shift.
  • the Doppler frequency shift of the downlink reference signal is sent to the wireless access network device, and the wireless access network device determines the reference TRP corresponding to the terminal device according to the Doppler frequency shift of each downlink reference signal corresponding to the terminal device, and sends it to the wireless access network device.
  • the terminal device sends the first identification information corresponding to the reference TRP.
  • the radio access network device may determine the TRP corresponding to the downlink reference signal with the largest Doppler frequency shift among the downlink reference signals corresponding to the terminal device as the reference TRP corresponding to the terminal device.
  • the wireless access network device measures the uplink reference signals sent by the terminal device through multiple TRPs, obtains the signal strength of the uplink reference signals corresponding to each TRP, and obtains the signal strength of the uplink reference signals corresponding to each TRP according to the signal strength of the uplink reference signals corresponding to each TRP. , determine the reference TRP corresponding to the terminal device, and send the first identification information corresponding to the reference TRP to the terminal device.
  • the wireless access network device may determine, among the uplink reference signals corresponding to each TRP, the TRP corresponding to the uplink reference signal with the highest signal strength as the reference TRP corresponding to the terminal device.
  • the uplink reference signal may be a channel sounding reference signal (sounding reference signal, SRS), DMRS and other reference signals, which are not limited.
  • SRS sounding reference signal
  • DMRS DMRS and other reference signals
  • the terminal device determines the signal strength of the downlink reference signal according to parameters such as RSRP, RSRQ, and SINR that can be used to indicate signal strength.
  • parameters such as RSRP, RSRQ, and SINR that can be used to indicate signal strength.
  • the wireless access network equipment can measure the received SRS1, SRS2 and SRS3 to obtain the signal of SRS1 strength, signal strength of SRS2, and signal strength of SRS3. Assuming that the wireless access network equipment determines that the SRS with the highest signal strength is SRS1 according to the signal strength of SRS1, the signal strength of SRS2, and the signal strength of SRS3, the wireless access network equipment can The TRP1 corresponding to the SRS1 is determined as the reference TRP corresponding to the terminal device, and the first identification information corresponding to the TRP1 is sent to the terminal device.
  • the wireless access network equipment may also perform Doppler frequency shift estimation on the uplink reference signals sent by the terminal equipment through multiple TRPs to obtain the Doppler frequency shifts of the uplink reference signals corresponding to the respective TRPs, and determine the Doppler frequency shifts of the uplink reference signals corresponding to the respective TRPs.
  • the Doppler frequency shift of the uplink reference signal is determined, the reference TRP corresponding to the terminal device is determined, and the first identification information corresponding to the reference TRP is sent to the terminal device.
  • the radio access network device may determine, among the uplink reference signals corresponding to each TRP, the TRP corresponding to the uplink reference signal with the largest Doppler frequency shift as the reference TRP corresponding to the terminal device.
  • the wireless access network equipment can perform Doppler frequency shift estimation on the received DMRS1, DMRS2, and DMRS3.
  • the wireless access network device can determine the TRP1 corresponding to DMRS1 as the reference TRP corresponding to the terminal device, and send the first identification information corresponding to TRP1 to the terminal device.
  • the wireless access network device sends the first identification information corresponding to the reference TRP to the terminal devices within the coverage area corresponding to the reference TRP in a multicast manner.
  • coverage area 1 corresponds to reference TRP1
  • coverage area 2 corresponds to reference TRP2.
  • coverage area 1 includes terminal equipment 1, terminal equipment 2, and terminal equipment 3, and coverage area 2 includes terminal equipment 4,
  • the terminal equipment 5 and the terminal equipment 6, the wireless access network equipment can send the first identification information corresponding to the reference TRP1 to the terminal equipment 1, the terminal equipment 2, and the terminal equipment 3 in a multicast manner, and send the first identification information corresponding to the reference TRP1 to the terminal equipment 4 in a multicast manner.
  • the terminal device 5 and the terminal device 6 send the first identification information corresponding to the reference TRP2.
  • the wireless access network device may send the first identification information to the terminal device through the reference TRP, or may send the first identification information to the terminal device through the non-reference TRP, which is not limited.
  • the terminal device measures downlink reference signals respectively sent by multiple TRPs; and determines the reference TRP according to the measurement results of the multiple downlink reference signals.
  • the downlink reference signal may be a reference signal such as TRS, CSI-RS, DMRS, SS, etc., which is not limited.
  • the measurement result of the downlink reference signal may include one or more of the following: signal strength, Doppler frequency shift.
  • the terminal device may determine the TRP corresponding to the downlink reference signal with the strongest signal strength as the reference TRP according to the signal strengths of multiple downlink reference signals.
  • the terminal device may determine the signal strength of the downlink reference signal according to parameters such as RSRP, RSRQ, and SINR that can be used to indicate signal strength.
  • parameters such as RSRP, RSRQ, and SINR that can be used to indicate signal strength.
  • the terminal equipment can perform Doppler frequency shift estimation on each downlink reference signal to obtain the Doppler frequency shift of each downlink reference signal, and calculate the Doppler frequency shift of each downlink reference signal.
  • the TRP corresponding to the downlink reference signal with the largest frequency shift is determined as the reference TRP.
  • the terminal device can perform Doppler frequency shift estimation for each TRS in the following manner: Get the Doppler shift for each TRS:
  • t may be the time interval of the respective OFDM symbols where the two columns of TRSs are located, and the unit may be seconds.
  • the maximum Doppler frequency shift that can be estimated by the terminal device is related to the interval of the TRS.
  • the terminal device may determine the TRP corresponding to the TRS with the largest Doppler frequency shift as the reference TRP.
  • the terminal device may send the second identification information to the radio access network device.
  • the second identification information may be used to indicate the reference TRP corresponding to the terminal device.
  • the second identification information may be the ID of the reference TRP, the IP address, etc., which may be used to indicate the identification information of the reference TRP, which is not limited.
  • the terminal device may send the second identification information to the wireless access network device through the reference TRP, or may send the second identification information to the wireless access network device through the non-reference TRP, which is not limited.
  • the terminal device can determine the Doppler frequency shift of the TRS according to the TRS corresponding to the reference TRP, and determine the Doppler frequency shift of the TRS according to the center frequency of the TRS and the Doppler frequency of the TRS. Frequency shift to determine the uplink transmission frequency.
  • the terminal device may determine the sum of the center frequency of the TRS corresponding to the reference TRP and the Doppler frequency shift of the TRS as the uplink transmission frequency.
  • the terminal device can convert f c +f The dri is determined as the uplink sending frequency when the terminal device sends the uplink signal 1 to the reference TRP.
  • the terminal device may estimate the Doppler frequency shift of the TRS according to the method shown in FIG. 5 , which will not be repeated.
  • the terminal equipment can directly use the center frequency and the center frequency of the TRS corresponding to the reference TRP.
  • the Doppler frequency shift of the TRS determines the uplink transmission frequency.
  • Step 303 The terminal device transmits an uplink signal at the uplink transmission frequency.
  • the uplink signal may include DMRS.
  • the terminal device may send the uplink signal 1 to the radio access network device by referring to the TRP on the uplink transmission frequency.
  • the uplink signal may be PUCCH, PUSCH, etc., which is not limited.
  • the terminal device when the terminal device needs to send the uplink signal 2 to the non-reference TRP, the terminal device can also send the uplink signal 2 to the non-reference TRP through the uplink transmission frequency f c +f dri .
  • Step 304 The wireless access network device determines a frequency adjustment parameter according to the uplink signal.
  • the wireless access network device may receive the uplink signal sent by the terminal device by referring to the TRP, perform Doppler frequency shift estimation on the uplink signal, and determine the frequency adjustment parameter according to the estimated Doppler frequency shift.
  • the radio access network device may refer to the method described above when describing FIG. 1d, and estimate the Doppler frequency shift of the uplink signal received by referring to the TRP according to the DMRS in the uplink signal, which will not be repeated.
  • the uplink transmission frequency is f c + f dri as an example.
  • the terminal device can send an uplink signal to the radio access network device by referring to the TRP, and the radio access network device receives the uplink signal.
  • Doppler frequency shift estimation can be performed to determine that the Doppler frequency shift of the uplink signal received by the radio access network device by referring to the TRP is 2f dri .
  • the radio access network device may pre-configure a value set of pre-compensation coefficients through RRC signaling, and determine pre-compensation from the value set of pre-compensation coefficients according to the Doppler frequency shift of the uplink signal corresponding to the reference TRP coefficient.
  • the set of pre-compensation coefficients may be ⁇ 0, 0.5, 0.75 ⁇ , and the radio access network device may select a value from the set of values as the pre-compensation coefficient.
  • the radio access network equipment can also perform Doppler shift estimation on the uplink signal received through the non-reference TRP, and according to the Doppler frequency shift of the uplink signal corresponding to the reference TRP and the uplink signal corresponding to the non-reference TRP
  • the Doppler frequency shift of the pre-compensation coefficient is determined from the value set of the pre-compensation coefficient.
  • the absolute value of the Doppler frequency shift of the uplink signal corresponding to the reference TRP may be
  • ; the absolute value of the Doppler frequency shift of the uplink signal corresponding to the non-reference TRP may be
  • the radio access network equipment receives the Doppler frequency shift of the uplink signal by referring to the TRP.
  • the absolute value can be
  • the Doppler frequency shift of the uplink signal received through the non-reference TRP can be
  • k takes different values, and the Doppler frequency shift compensation effect corresponding to the reference TRP and the non-reference TRP is different.
  • the wireless access network equipment can refer to the above Figure 6 and the following Table 1, according to the actual communication requirements.
  • the k value is reasonably selected from the value set of the precompensation coefficient.
  • the wireless access network device may determine that the pre-compensation coefficient is 0 when
  • the frequency adjustment parameter includes the above-mentioned pre-compensation coefficient.
  • the radio access network device may activate a pre-compensation coefficient from a value set of pre-compensation coefficients through DCI signaling, and carry the activated pre-compensation coefficient in the DCI signaling and send it to the terminal device by referring to the TRP. .
  • the radio access network device can also activate a pre-compensation coefficient from the value set of pre-compensation coefficients through MAC CE signaling, and carry the activated pre-compensation coefficient in the MAC CE signaling by referring to TRP is sent to the end device.
  • the radio access network device may activate the pre-compensation coefficient through 2-bit information in DCI signaling or MAC CE signaling.
  • the frequency adjustment parameter includes an index of the pre-compensation coefficient.
  • the wireless access network device may determine a pre-compensation coefficient from the value set of pre-compensation coefficients according to the Doppler frequency shift of the uplink signal, and send the index of the determined pre-compensation coefficient to the reference TRP corresponding to the reference TRP. terminal equipment.
  • the wireless access network device may pre-configure the value set of the pre-compensation coefficient for the terminal device through RRC signaling, so that after the terminal device receives the index of the pre-compensation coefficient, Set of values to determine the pre-compensation coefficient.
  • the wireless access network device can reduce signaling overhead by sending the index of the pre-compensation coefficient to the terminal device by referring to the TRP.
  • the radio access network device sends the index of the pre-compensation coefficient to the terminal device through DCI signaling or MAC CE signaling.
  • the frequency adjustment parameter includes a frequency adjustment value.
  • the wireless access network device determines a pre-compensation coefficient from the value set of pre-compensation coefficients according to the Doppler frequency shift of the uplink signal, and determines the pre-compensation coefficient according to the Doppler frequency shift and the pre-compensation coefficient of the uplink signal.
  • the frequency adjustment value is sent to the terminal equipment corresponding to the reference TRP through the reference TRP.
  • the frequency adjustment value may be k*2f dri , where k is the pre-compensation coefficient.
  • the wireless access network device quantifies the Doppler frequency shift of the uplink signal according to a certain proportion to obtain the frequency adjustment value.
  • n E.g, The initial Doppler frequency shift of the uplink signal; wherein, n can be pre-specified by the communication protocol, or can be customized by the wireless access network device, which is not limited.
  • Step 305 The wireless access network device sends a frequency adjustment FA command to the terminal device by referring to the TRP.
  • the FA command can be used to indicate the frequency adjustment parameter.
  • the radio access network device periodically sends the FA command to the terminal device by referring to the TRP.
  • the radio access network device may pre-configure the pre-compensation period through RRC signaling, and when the pre-compensation period arrives, send the FA command to the terminal device by referring to the TRP.
  • the unit of the pre-compensation period may be a time slot, an OFDM symbol or a second, etc., which is not limited.
  • the radio access network device when the Doppler frequency shift corresponding to the uplink signal is greater than or equal to a preset threshold, the radio access network device sends the FA command to the terminal device by referring to the TRP.
  • the radio access network device may evaluate the Doppler frequency shift of the uplink signal, and when the Doppler frequency shift of the uplink signal is greater than or equal to a preset threshold, determine the frequency adjustment parameter, and pass the frequency adjustment parameter by reference. TRP is sent to the end device.
  • the wireless access network device when the wireless access network device sends the FA command to the terminal device through the reference TRP, it can also send the FA command to the terminal device through one or more non-reference TRPs, which improves the reliability of the terminal device receiving the FA command.
  • Step 306 The terminal device adjusts the uplink transmission frequency according to the FA command.
  • the terminal device may adjust the uplink transmission frequency according to the pre-compensation coefficient.
  • the terminal device can determine the pre-compensation coefficient by the index of the pre-compensation coefficient, and adjust the uplink transmission frequency according to the pre-compensation coefficient.
  • the uplink transmission frequency is f c +f dri and the pre-compensation coefficient is k as an example
  • the terminal device can adjust the uplink transmission frequency from f c +f dri to f c +f dri -k *2f dri ; where k*2f dri can also be described as FA in FIG. 4 .
  • the terminal device may use the adjusted uplink transmission frequency to send the uplink signal to the radio access network device through multiple TRPs.
  • the terminal device may use f c +f dri -k*2f dri to send uplink signals to the wireless access network device through multiple TRPs.
  • the terminal device can use one of the multiple TRPs as a reference TRP and determine the uplink transmission frequency according to the reference TRP, so that the wireless access network device can estimate the uplink transmission frequency according to the uplink transmission frequency.
  • the terminal equipment can reduce the Doppler frequency shift of the uplink signals received by multiple TRPs at the same time, so that the wireless access network equipment The center frequency of the received uplink signal can be tracked correctly, and the demodulation performance of the wireless access network equipment can be improved.
  • each device includes corresponding hardware structures and/or software modules for performing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • each device may be divided into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 7 shows a terminal device
  • the terminal device 70 may include a processing module 701 and a transceiver module 702 .
  • the terminal device 70 may be a terminal device, or may be a chip applied in the terminal device or other combined devices, components, etc. having the functions of the above-mentioned terminal device.
  • the processing module 701 may be a processor (or a processing circuit), such as a baseband processor, and the baseband processor may include one or more CPUs;
  • the transceiver module 702 may be a transceiver, a transceiver It can include antennas and radio frequency circuits, etc.
  • the processing module 701 may be a processor (or a processing circuit), such as a baseband processor; the transceiver module 702 may be a radio frequency unit.
  • the processing module 701 may be a processor (or a processing circuit) of the chip system, and may include one or more central processing units; the transceiver module 702 may be the input and output of a chip (eg, a baseband chip). interface.
  • processing module 701 in this embodiment of the present application may be implemented by a processor or a processor-related circuit component (or referred to as a processing circuit); the transceiver module 702 may be implemented by a transceiver or a transceiver-related circuit component.
  • processing module 701 may be configured to perform all operations except the transceiving operations performed by the terminal device in the embodiments shown in FIGS. 3-6, and/or other processes used to support the techniques described herein;
  • Transceiver module 702 may be used to perform all of the transceive operations performed by the terminal device in the embodiments shown in FIGS. 3-6, and/or to support other processes of the techniques described herein.
  • the processing module 701 is used to measure the TRSs sent by multiple TRPs respectively, and determine the uplink transmission frequency according to the reference TRP; wherein, different TRPs correspond to different TRSs; the reference TRP is one of the multiple TRPs;
  • the transceiver module 702 is used for sending an uplink signal at the uplink transmission frequency, and receiving a frequency adjustment FA command from the reference TRP; wherein, the FA command is used to indicate a frequency adjustment parameter; the frequency adjustment parameter is determined according to the uplink signal;
  • the processing module 701 is further configured to adjust the uplink transmission frequency according to the FA command.
  • the transceiver module 702 is further configured to receive the first identification information indicating the reference TRP from the radio access network device.
  • the processing module 701 is further configured to measure the downlink reference signals respectively sent by the multiple TRPs; and determine the reference TRP according to the measurement results of the multiple downlink reference signals.
  • the measurement result of the downlink reference signal includes one or more of the following: signal strength and Doppler frequency shift.
  • the processing module 701 is specifically configured to determine the TRP corresponding to the downlink reference signal with the strongest signal strength as the reference TRP according to the signal strengths of multiple downlink reference signals.
  • the processing module 701 is specifically configured to determine the TRP corresponding to the downlink reference signal with the largest Doppler frequency shift as the reference TRP according to the Doppler frequency shifts of multiple downlink reference signals.
  • the transceiver module 702 is further configured to send second identification information for indicating the reference TRP corresponding to the terminal device.
  • the frequency adjustment parameter includes a pre-compensation coefficient; or, the frequency adjustment parameter includes an index of the pre-compensation coefficient; wherein the pre-compensation coefficient is one of a preset pre-compensation coefficient value set; or, the frequency adjustment Parameters include frequency adjustment values.
  • the terminal device also receives the FA command sent by one or more TRPs other than the reference TRP among the multiple TRPs.
  • the processing module 701 in FIG. 7 can be replaced by a processor, which can integrate the functions of the processing module 701; the transceiver module 702 can be replaced by a processor, and the processor can integrate the functions of the transceiver module 702. Function.
  • the terminal device 70 shown in FIG. 7 may further include a memory.
  • the processing module 701 is replaced by a processor and the transceiver module 702 is replaced by a transceiver
  • the terminal device 70 involved in this embodiment of the present application may be the communication device shown in FIG. 2 .
  • FIG. 8 shows a wireless access network device
  • the wireless access network device 80 may include a transceiver module 801 and a processing module 802 .
  • the radio access network device 80 may be a radio access network device, a chip applied in the radio access network device, or other combined devices, components, etc. having the functions of the above radio access network device.
  • the transceiver module 801 may be a transceiver, and the transceiver may include an antenna and a radio frequency circuit;
  • the processing module 802 may be a processor (or a processing circuit), such as a baseband processing
  • the baseband processor may include one or more CPUs.
  • the transceiver module 801 may be a radio frequency unit; the processing module 802 may be a processor (or a processing circuit), such as a baseband processor.
  • the transceiver module 801 may be an input and output interface of a chip (eg, a baseband chip); the processing module 802 may be a processor (or a processing circuit) of the chip system, which may include one or more a central processing unit.
  • transceiver module 801 in this embodiment of the present application may be implemented by a transceiver or a transceiver-related circuit component; the processing module 802 may be implemented by a processor or a processor-related circuit component (or referred to as a processing circuit).
  • the transceiving module 801 may be used to perform all transceiving operations performed by the radio access network device in the embodiments shown in FIGS. 3-6 , and/or other processes used to support the techniques described herein; processing module 802 may be used to perform all of the operations performed by the radio access network device in the embodiments shown in FIGS. 3-6 , except for transceiving operations, and/or other processes for supporting the techniques described herein.
  • the transceiver module 801 is used to send TRS to terminal equipment respectively through multiple TRPs, and receive uplink signals from terminal equipment; wherein, different TRPs correspond to different TRSs; the uplink transmission frequency of uplink signals is determined according to the reference TRP; TRP is one of multiple TRPs;
  • a processing module 802 configured to determine a frequency adjustment parameter according to the uplink signal
  • the transceiver module 801 is further configured to send a frequency adjustment FA command to the terminal device by referring to the TRP, wherein the FA command is used to indicate a frequency adjustment parameter.
  • the transceiver module 801 is further configured to send the first identification information for indicating the reference TRP to the terminal device.
  • the transceiver module 801 is further configured to receive second identification information from the terminal device for indicating the reference TRP corresponding to the terminal device.
  • the frequency adjustment parameter includes a pre-compensation coefficient; or, the frequency adjustment parameter includes an index of the pre-compensation coefficient; wherein the pre-compensation coefficient is one of a preset pre-compensation coefficient value set; or, the frequency adjustment Parameters include frequency adjustment values.
  • the radio access network device also sends the FA command to the terminal device through one or more TRPs other than the reference TRP among the multiple TRPs.
  • the transceiver module 801 in FIG. 8 can be replaced by a transceiver, which can integrate the functions of the transceiver module 801; the processing module 802 can be replaced by a processor, which can integrate the functions of the processing module 802. Function.
  • the radio access network device 80 shown in FIG. 8 may further include a memory.
  • the radio access network device 80 involved in the embodiment of the present application may be the communication device shown in FIG. 2 .
  • Embodiments of the present application also provide a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by instructing the relevant hardware by a computer program, the program can be stored in the above computer-readable storage medium, and when the program is executed, it can include the processes in the above method embodiments.
  • the computer-readable storage medium may be an internal storage unit of the terminal (including the data sending end and/or the data receiving end) in any of the foregoing embodiments, such as a hard disk or a memory of the terminal.
  • the above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned terminal, such as a plug-in hard disk equipped on the above-mentioned terminal, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, flash memory card (flash card) etc. Further, the above-mentioned computer-readable storage medium may also include both an internal storage unit of the above-mentioned terminal and an external storage device.
  • the above-mentioned computer-readable storage medium is used for storing the above-mentioned computer program and other programs and data required by the above-mentioned terminal.
  • the above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.
  • At least one (item) refers to one or more
  • multiple refers to two or more
  • at least two (item) refers to two or three And three or more
  • "and/or” is used to describe the association relationship of related objects, indicating that three kinds of relationships can exist, for example, “A and/or B” can mean: only A exists, only B exists, and A exists at the same time and B three cases, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an "or” relationship.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one (a) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", where a, b, c can be single or multiple.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be Incorporation may either be integrated into another device, or some features may be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of 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 shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or may be distributed to multiple different places . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, which are stored in a storage medium , including several instructions to make a device (may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.

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Abstract

本申请实施例提供了一种发送频率调整方法及装置，能够改善现有多TRP通信场景中，由于终端设备无法根据接收到的多个TRS确定上行发送频率，导致终端设备无法对上行发送频率进行调整，进而导致无线接入网设备无法正确跟踪TRP接收到的上行信号的中心频率，使得无线接入网设备的解调性能下降的技术问题。方法包括：终端设备测量多个TRP分别发送的TRS；不同的TRP对应不同的TRS；终端设备根据参考TRP，确定上行发送频率；参考TRP是多个TRP中的一个；终端设备在上行发送频率发送上行信号；并接收来自参考TRP的FA命令，根据该FA命令，对上行发送频率进行调整；其中，FA命令用于指示频率调整参数；频率调整参数根据上行信号确定。

Description

一种发送频率调整方法及装置 技术领域
本申请实施例涉及通信技术领域，尤其是涉及一种发送频率调整方法及装置。
背景技术
现有通信***中，当终端设备移动时，终端设备与无线接入网设备的传输接收点(transmission reception point，TRP)存在相对运动速度，无线接入网设备通过TRP与终端设备进行通信时，接收信号的中心频率相对于发送信号的中心频率可能会存在偏移，该中心频率的偏移值可以称为多普勒频移。
其中，无线接入网设备可以通过TRP向终端设备发送跟踪参考信号(tracking reference signal，TRS)，终端设备可以根据接收到的TRS估计下行多普勒频移，并根据估计出的下行多普勒频移确定上行发送频率，采用该上行发送频率向TRP发送解调参考信号(demodulation reference signal，DMRS)。无线接入网设备可以根据TRP接收到的DMRS估计上行多普勒频移，并按照一定比例对上行多普勒频移进行量化，得到频率调整(frequency adjustment，FA)值，通过TRP将该FA值发送给终端设备，可以使得终端设备根据该FA值对上行发送频率进行调整，降低TRP接收到的上行信号的多普勒频移。
但是，当无线接入网设备包括多个TRP并使用多个TRP与终端设备通信时，无线接入网设备通过多个TRP向终端设备发送多个TRS，由于终端设备与各个TRP的相对位置和相对运动速度可能不同，导致终端设备无法根据接收到的多个TRS确定上行发送频率，因此无线接入网设备无法估计上行多普勒频移，进而无法确定FA值，使得终端设备无法根据FA值对上行发送频率进行调整，无法同时降低多个TRP接收到的上行信号的多普勒频移，当TRP接收到的上行信号的多普勒频移较大时，可能会超出无线接入网设备估计上行多普勒频移的能力，导致无线接入网设备无法正确跟踪接收到的上行信号的中心频率，使得无线接入网设备的解调性能下降。
发明内容
有鉴于此，本申请提供一种发送频率调整方法及装置，能够改善现有多TRP通信场景中，由于终端设备无法根据接收到的多个TRS确定上行发送频率，导致终端设备无法对上行发送频率进行调整，进而导致无线接入网设备无法正确跟踪TRP接收到的上行信号的中心频率，使得无线接入网设备的解调性能下降的技术问题。
第一方面，本申请实施例提供了一种发送频率调整方法，该方法包括：终端设备测量多个传输接收点TRP分别发送的跟踪参考信号TRS，并根据参考TRP，确定上行发送频率；其中，不同的TRP对应不同的TRS；参考TRP是多个TRP中的一个；终端设备在上行发送频率发送上行信号，并接收来自参考TRP的频率调整FA命令；其中，FA命令用于指示频率调整参数；频率调整参数根据上行信号确定；终端设备根据FA命令，对上行发送频率进行调整。
基于第一方面，终端设备通过将多个TRP中的一个TRP作为参考TRP，并根据该参 考TRP确定上行发送频率，可以使得无线接入网设备根据该上行发送频率，估计上行多普勒频移，进而确定频率调整参数，终端设备通过根据该频率调整参数对上行发送频率进行调整，可以同时降低多个TRP接收到的上行信号的多普勒频移，使得无线接入网设备可以正确跟踪接收到的上行信号的中心频率，提高无线接入网设备的解调性能。
一种可能的设计中，终端设备接收来自无线接入网设备的用于指示参考TRP的第一标识信息。
基于该可能的设计，终端设备可以根据无线接入网设备发送的第一标识信息确定参考TRP，为终端设备确定参考TRP提供了可行性方案。
一种可能的设计中，终端设备测量多个TRP分别发送的下行参考信号；根据多个下行参考信号的测量结果，确定参考TRP。
基于该可能的设计，终端设备还可以根据下行参考信号的测量结果，确定参考TRP，为终端设备确定参考TRP提供了可行性方案。
一种可能的设计中，下行参考信号的测量结果包括下述一种或多种：信号强度、多普勒频移。
一种可能的设计中，终端设备根据多个下行参考信号的信号强度，将信号强度最强的下行参考信号对应的TRP确定为参考TRP。
一种可能的设计中，终端设备根据多个下行参考信号的多普勒频移，将多普勒频移最大的下行参考信号对应的TRP确定为参考TRP。
基于上述三种可能的设计，终端设备可以根据信号强度，也可以根据多普勒频移，确定参考TRP，不予限制。
一种可能的设计中，终端设备发送用于指示终端设备对应的参考TRP的第二标识信息。
基于该可能的设计，终端设备还可以在确定参考TRP之后，向无线接入网设备发送第二标识信息，以向无线接入网设备指示终端设备对应的参考TRP。
一种可能的设计中，频率调整参数包括预补偿系数；或者，频率调整参数包括预补偿系数的索引；其中，预补偿系数为预设预补偿系数的取值集合中的一个；或者，频率调整参数包括频率调整值。
基于该可能的设计，频率调整参数可以是预补偿系数，也可以是预补偿系数的参数，也可以是频率调整值，为频率调整参数提供了可行性方案。另外，当频率调整参数为预补偿系数或预补偿系数的索引时，可以降低信令开销。
一种可能的设计中，终端设备还接收多个TRP中，除参考TRP外的一个或多个TRP发送的FA命令。
基于该可能的设计，终端设备在通过参考TRP接收无线接入网设备发送的频率调整FA命令时，还可以通过多个TRP中，除参考TRP之外的一个或多个TRP接收无线接入网设备发送的FA命令，提高终端设备接收FA命令的可靠性。
第二方面，本申请实施例提供了一种通信装置，该通信装置可以实现上述第一方面或者第一方面可能的设计中终端设备所执行的功能，所述功能可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。如，处理模块和收发模块；处理模块与收发模块耦合。处理模块，用于测量多个传输接收点TRP分别发送的跟踪参考信号TRS，并根据参考TRP，确定上行发送频率；其中，不同的TRP对应不同的TRS； 参考TRP是多个TRP中的一个；收发模块，用于在上行发送频率发送上行信号，并接收来自参考TRP的频率调整FA命令；其中，FA命令用于指示频率调整参数；频率调整参数根据上行信号确定；处理模块，还用于根据FA命令，对上行发送频率进行调整。
需要说明的是，该通信装置的具体实现方式还可参考第一方面或第一方面的任一种可能的设计提供的发送频率调整方法中终端设备的行为功能，该通信装置所带来的技术效果也可参见上述第一方面的任一种可能的设计所带来的技术效果，不予赘述。
第三方面，本申请实施例提供了一种通信装置，该通信装置可以为通信装置或者通信装置中的芯片或者片上***。该通信装置可以实现上述各方面或者各可能的设计中终端设备所执行的功能，所述功能可以通过硬件实现。一种可能的设计中，该通信装置可以包括：处理器和收发器。处理器和收发器可以用于支持通信装置实现上述第一方面或者第一方面的任一种可能的设计中所涉及的功能。例如：处理器可以用于测量多个传输接收点TRP分别发送的跟踪参考信号TRS，并根据参考TRP，确定上行发送频率；其中，不同的TRP对应不同的TRS；参考TRP是多个TRP中的一个；收发器可以用于在上行发送频率发送上行信号，并接收来自参考TRP的频率调整FA命令；其中，FA命令用于指示频率调整参数；频率调整参数根据上行信号确定；处理器可以还用于根据FA命令，对上行发送频率进行调整。在又一种可能的设计中，所述通信装置还可以包括存储器，存储器，用于保存终端设备必要的计算机执行指令和数据。当该通信装置运行时，该收发器和处理器执行该存储器存储的该计算机执行指令，以使该通信装置执行如上述第一方面或者第一方面的任一种可能的设计所述的发送频率调整方法。
其中，第三方面中通信装置的具体实现方式可参考第一方面或第一方面的任一种可能的设计提供的发送频率调整方法中终端设备的行为功能。
第四方面，本申请实施例提供了一种发送频率调整方法，该方法包括：无线接入网设备通过多个传输接收点TRP分别向终端设备发送跟踪参考信号TRS，并接收来自终端设备的上行信号；其中，不同的TRP对应不同的TRS，上行信号的上行发送频率根据参考TRP确定；参考TRP是多个TRP中的一个；无线接入网设备根据上行信号，确定频率调整参数，并通过参考TRP向终端设备发送频率调整FA命令；其中，FA命令用于指示频率调整参数。
基于第四方面，无线接入网设备通过多个TRP向终端设备发TRS，可以使得终端设备将多个TRP中的一个TRP作为参考TRP，并根据该参考TRP确定上行发送频率，无线接入网设备可以根据该上行发送频率，估计上行多普勒频移，进而确定频率调整参数，以使终端设备根据该频率调整参数对上行发送频率进行调整，可以同时降低多个TRP接收到的上行信号的多普勒频移，使得无线接入网设备可以正确跟踪接收到的上行信号的中心频率，提高无线接入网设备的解调性能。
一种可能的设计中，无线接入网设备向终端设备发送用于指示参考TRP的第一标识信息。
基于该可能的设计，无线接入网设备可以通过向终端设备发送第一标识信息，以使终端设备根据第一标识信息确定参考TRP，为终端设备确定参考TRP提供了可行性方案。
一种可能的设计中，无线接入网设备接收来自终端设备的用于指示终端设备对应的参考TRP的第二标识信息。
基于该可能的设计，无线接入网设备可以根据终端设备发送的第二标识信息，确定终端设备对应的参考TRP。
一种可能的设计中，频率调整参数包括预补偿系数；或者，频率调整参数包括预补偿系数的索引；其中，预补偿系数为预设预补偿系数的取值集合中的一个；或者，频率调整参数包括频率调整值。
基于该可能的设计，频率调整参数可以是预补偿系数，也可以是预补偿系数的参数，也可以是频率调整值，为频率调整参数提供了可行性方案。另外，当频率调整参数为预补偿系数或预补偿系数的索引时，可以降低信令开销。
一种可能的设计中，无线接入网设备还通过多个TRP中，除参考TRP之外的一个或多个TRP向终端设备发送FA命令。
基于该可能的设计，无线接入网设备在通过参考TRP向终端设备发送FA命令时，还可以通过多个TRP中，除参考TRP之外的一个或多个TRP向终端设备发送FA命令，提高终端设备接收FA命令的可靠性。
第五方面，本申请实施例提供了一种通信装置，该通信装置可以实现上述第四方面或者第四方面可能的设计中无线接入网设备所执行的功能，所述功能可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。如，收发模块和处理模块；收发模块与处理模块耦合。收发模块，用于通过多个传输接收点TRP分别向终端设备发送跟踪参考信号TRS，并接收来自终端设备的上行信号；其中，不同的TRP对应不同的TRS；上行信号的上行发送频率根据参考TRP确定；参考TRP是多个TRP中的一个；处理模块，用于根据上行信号，确定频率调整参数；收发模块，还用于通过参考TRP向终端设备发送频率调整FA命令；其中，FA命令用于指示频率调整参数。
需要说明的是，该通信装置的具体实现方式还可参考第四方面或第四方面的任一种可能的设计提供的发送频率调整方法中无线接入网设备的行为功能，该通信装置所带来的技术效果也可参见上述第四方面的任一种可能的设计所带来的技术效果，不予赘述。
第六方面，本申请实施例提供了一种通信装置，该通信装置可以为通信装置或者通信装置中的芯片或者片上***。该通信装置可以实现上述各方面或者各可能的设计中无线接入网设备所执行的功能，所述功能可以通过硬件实现。一种可能的设计中，该通信装置可以包括：收发器和处理器。收发器和处理器可以用于支持通信装置实现上述第四方面或者第四方面的任一种可能的设计中所涉及的功能。例如：收发器可以用于通过多个传输接收点TRP分别向终端设备发送跟踪参考信号TRS，并接收来自终端设备的上行信号；其中，不同的TRP对应不同的TRS；上行信号的上行发送频率根据参考TRP确定；参考TRP是多个TRP中的一个；处理器可以用于根据上行信号，确定频率调整参数；收发器可以还用于通过参考TRP向终端设备发送频率调整FA命令；其中，FA命令用于指示频率调整参数。在又一种可能的设计中，所述通信装置还可以包括存储器，存储器，用于保存无线接入网设备必要的计算机执行指令和数据。当该通信装置运行时，该收发器和处理器执行该存储器存储的该计算机执行指令，以使该通信装置执行如上述第四方面或者第四方面的任一种可能的设计所述的发送频率调整方法。
其中，第六方面中通信装置的具体实现方式可参考第四方面或第四方面的任一种可能的设计提供的发送频率调整方法中无线接入网设备的行为功能。
第七方面，提供了一种通信装置，该通信装置包括一个或多个处理器，一个或多个处理器，用于运行计算机程序或指令，当一个或多个处理器执行计算机指令或指令时，使得通信装置执行如第一方面或者第一方面的任一可能的设计所述的发送频率调整方法；或者执行如第四方面或者第四方面的任一可能的设计所述的发送频率调整方法。
一种可能的设计中，该通信装置还包括一个或多个通信接口；一个或多个通信接口和一个或多个处理器耦合，一个或多个通信接口用于与通信装置之外的其它模块进行通信。
一种可能的设计中，该通信装置还包括一个或多个存储器，一个或多个存储器与一个或多个处理器耦合，一个或多个存储器用于存储上述计算机程序或指令。在一种可能的实现方式中，存储器位于所述通信装置之外。在另一种可能的实现方式中，存储器位于所述通信装置之内。本申请实施例中，处理器和存储器还可能集成于一个器件中，即处理器和存储器还可以被集成在一起。
第八方面，提供了一种通信装置，该通信装置包括接口电路和逻辑电路；接口电路与逻辑电路耦合；逻辑电路用于执行如第一方面或者第一方面的任一可能的设计所述的发送频率调整方法；或者执行如第四方面或者第四方面的任一可能的设计所述的发送频率调整方法；接口电路用于与通信装置之外的其它模块进行通信。
第九方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机指令或程序，当计算机指令或程序在计算机上运行时，使得计算机执行如第一方面或者第一方面的任一可能的设计所述的发送频率调整方法，或者执行如第四方面或者第四方面的任一可能的设计所述的发送频率调整方法。
第十方面，提供了一种包含计算机指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如第一方面或者第一方面的任一可能的设计所述的发送频率调整方法，或者执行如第四方面或者第四方面的任一可能的设计所述的发送频率调整方法。
第十一方面，本申请实施例提供一种计算机程序，当其在计算机上运行时，使得计算机执行如第一方面或者第一方面的任一可能的设计所述的发送频率调整方法，或者执行如第四方面或者第四方面的任一可能的设计所述的发送频率调整方法。
其中，第七方面至第十一方面中任一种设计方式所带来的技术效果可参见上述第一方面的任一种可能的设计所带来的技术效果，或者参见上述第四方面的任一种可能的设计所带来的技术效果，不予赘述。
第十二方面，提供了一种通信***，该通信***包括如第二方面至第三方面的任一方面所述的终端设备和第五方面至第六方面的任一方面所述的无线接入网设备。
附图说明
图1a为本申请实施例提供的一种通信***的示意图；
图1b为本申请实施例提供的一种现有发送频率调整方法的流程图；
图1c为本申请实施例提供的一种随机接入序列的帧结构示意图；
图1d为本申请实施例提供的一种DMRS的帧结构示意图；
图1e为本申请实施例提供的一种通信***的示意图；
图2为本申请实施例提供的一种通信装置的组成示意图；
图3为本申请实施例提供的一种发送频率调整方法的流程图；
图4为本申请实施例提供的一种TRS与终端设备的通信示意图；
图5为本申请实施例提供的一种TRS的帧结构示意图；
图6为本申请实施例提供的一种多普勒频移与预补偿系数的对应关系的曲线图；
图7为本申请实施例提供的一种终端设备的组成示意图；
图8为本申请实施例提供的一种无线接入网设备的组成示意图。
具体实施方式
在描述本申请实施例之前，对本申请实施例涉及的技术术语进行描述。
多普勒频移：当发送设备与接收设备之间存在相对运动时，发送设备与接收设备进行通信时，接收信号的中心频率相对于发送信号的中心频率可能会存在偏移，该中心频率的偏移值可以称为多普勒频移。
其中，多普勒频移可以与接收设备与发送设备间的相对运动速度成正比，即f d＝v/c*f c；其中，f d为多普勒频移，v为相对运动速度，c为光速，f c为发送信号的中心频率。当相对运动速度较大时，多普勒频移也会较大。
需要说明的是，当接收设备朝向发送设备运动时，多普勒频移为正；当接收设备远离发送设备运动时，多普勒频移为负。
示例性的，以无线接入网设备通过传输接收点(transmission reception point，TRP)与终端设备进行通信为例，如图1a所示，当终端设备行驶在TRP1和TRP2之间时，TRP1可以向终端设备发送中心频率为f c的下行信号(例如，跟踪参考信号(tracking reference signal，TRS))，由于终端设备与TRP1之间存在相对运动，终端设备接收到的下行信号的中心频率可能会变为f c+f d1，其中，f d1为下行多普勒频移。终端设备接收到下行信号后，可以基于下行信号的中心频率f c+f d1，向TRP1发送上行信号(例如，物理上行共享信道(physical uplink shared channel，PUSCH)、物理上行控制信道(physical uplink control channel，PUCCH))，由于终端设备与TRP1之间存在相对运动，TRP1接收到的上行信号的中心频率可能会变为f c+2f d1，其中，2f d1为上行多普勒频移。同理，对于TRP2来说，f d2和2f d2分别为TRP2对应终端设备的下行多普勒频移与上行多普勒频移。
基于上述对多普勒频移的描述，当无线接入网设备通过TRP与终端设备进行通信时，如果TRP接收到的上行信号的多普勒频移较大，可能会超出无线接入网设备估计上行多普勒频移的能力，导致无线接入网设备无法正确跟踪接收到的上行信号的中心频率，使得无线接入网设备的解调性能下降。
基于上述问题，如图1b所示，无线接入网设备可以采用下述步骤101至步骤110，通过向终端设备发送频率调整(frequency adjustment，FA)命令，以使终端设备根据FA命令调整上行发送频率，从而降低TRP接收到的上行信号的多普勒频移，提高无线接入网设备的解调性能。
步骤101、终端设备向无线接入网设备发送随机接入序列。
其中，终端设备可以通过随机接入信道，通过TRP向无线接入网设备发送随机接入序列。
步骤102、无线接入网设备根据随机接入序列，估计初始多普勒频移。
示例性的，以无线接入网设备接收到的随机接入序列为图1c所示的随机接入序列为例， 该随机接入序列可以包括循环前缀(cyclic prefix，CP)以及N个重复的时域序列r；其中，每个时域序列r的长度为M；无线接入网设备可以基于该随机接入序列，根据下述公式估计初始多普勒频移：
Figure PCTCN2021072261-appb-000001
其中，f d为初始多普勒频移；t为相邻的两个序列r的起始样点之间的时间间隔，单位可以为秒；L cp为CP的样点数。
步骤103、无线接入网设备根据初始多普勒频移，确定FA值。
示例性的，无线接入网设备可以按照一定比例对初始多普勒频移进行量化，得到FA值。
例如，
Figure PCTCN2021072261-appb-000002
初始多普勒频移；其中，n可以为通信协议预先规定的，也可以是无线接入网设备自定义的，不予限制。
步骤104、无线接入网设备向终端设备发送携带有FA值的FA命令。
其中，无线接入网设备可以通过TRP向终端设备发送携带有FA值的FA命令。
示例性的，无线接入网设备可以通过随机接入响应(random access response，RAR)信令或媒体接入控制(media access control，MAC)信令等信令向终端设备发送FA命令。
步骤105、终端设备根据FA命令调整上行发送频率。
示例性的，终端设备可以根据FA命令确定FA值，将当前上行发送频率与FA值的差值确定为调整后的上行发送频率。
例如，以当前上行发送频率为f c+f d为例，终端设备可以根据接收到的FA命令，将上行发送频率由f c+f d调整为f c+f d-FA值。
步骤106、终端设备根据调整后的上行发送频率向无线接入网设备发送上行信号。
其中，上行信号可以包括解调参考信号(demodulation reference signal，DMRS)。
示例性的，上行信号可以为PUCCH、PUSCH等，不予限制。
具体的，终端设备可以在随机接入成功后，采用调整后的上行发送频率通过TRP向无线接入网设备发送上行信号。
步骤107、无线接入网设备根据上行信号，估计多普勒频移。
其中，无线接入网设备可以根据上行信号中的DMRS，估计多普勒频移。
示例性的，以无线接入网设备接收到的DMRS在一个时隙(slot)中的位置如图1d所示为例，假设终端设备在一个slot中M个频域上发送的DMRS为x＝[x 1，x 2，…，x N]，且无线接入网设备通过TRP接收到的一个slot中M个频域的DMRS为r 1＝[r 11，r 12，…，r 1N]、r 2＝[r 21，r 22，…，r 2N]、…、r M＝[r M1，r M2，…，r MN]，其中，N为一个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号中映射的DMRS信号的个数。则无线接入网设备可以先将r 1、r 2、…、r M中的每个元素分别与x中的每个元素相除，得到h 1＝[h 11，h 12，…，h 1N]、h 2＝[h 21，h 22，…，h 2N]、…、h M＝[h M1，h M2，…，h MN]；然后根据下述公式估计多普勒频移：
Figure PCTCN2021072261-appb-000003
其中，t可以为每列DMRS所在各自OFDM符号的时间间隔，单位可以为秒。
需要说明的是，无线接入网设备能估计出的最大多普勒频移与DMRS的间隔相关。
步骤108、无线接入网设备根据多普勒频移，确定FA值。
其中，无线接入网设备根据多普勒频移确定FA值的具体过程可以参照上述步骤103，不予赘述。
步骤109、无线接入网设备向终端设备发送携带有FA值的FA命令。
其中，无线接入网设备可以在FA值的变化量超过预设阈值时，通过PDSCH或MAC向终端设备发送FA命令。
示例性的，以无线接入网设备前一次确定的FA值为FA1，当前确定的FA值为FA2为例，无线接入网设备可以在FA1与FA2的差值超过预设阈值时，向终端设备发送FA命令。
步骤110、终端设备根据FA命令调整上行发送频率。
其中，步骤110的具体过程可以参照上述步骤105，不予赘述。
但是，当无线接入网设备包括多个TRP时，无线接入网设备可以通过多个TRP向终端设备发送多个TRS，终端设备无法根据接收到的多个TRS确定上行发送频率，导致无线接入网设备无法估计上行多普勒频移，进而无法确定FA值，使得终端设备无法根据FA值对上行发送频率进行调整，无法同时降低多个TRP接收到的上行信号的多普勒频移，当无线接入网设备接收到的上行信号的多普勒频移较大时，可能会超出无线接入网设备估计上行多普勒频移的能力，导致无线接入网设备无法正确跟踪接收到的上行信号的中心频率，使得无线接入网设备的解调性能下降。
为解决上述问题，本申请实施例提供了一种发送频率调整方法，其中，终端设备可以测量多个TRP分别发送的TRS，根据参考TRP，确定上行发送频率；不同的TRP对应不同的TRS；参考TRP是多个TRP中的一个；终端设备还可以在上行发送频率发送上行信号；并接收来自参考TRP的FA命令，根据该FA命令，对上行发送频率进行调整；其中，FA命令用于指示频率调整参数；频率调整参数根据上行信号确定。
本申请实施例中，终端设备通过将多个TRP中的一个TRP作为参考TRP，并根据该参考TRP确定上行发送频率，可以使得无线接入网设备根据该上行发送频率，估计上行多普勒频移，进而确定频率调整参数，终端设备通过根据该频率调整参数对上行发送频率进行调整，可以同时降低多个TRP接收到的上行信号的多普勒频移，使得无线接入网设备可以正确跟踪接收到的上行信号的中心频率，提高无线接入网设备的解调性能。
下面结合说明书附图对本申请实施例的实施方式进行详细描述。
本申请实施例提供的发送频率调整方法可用于任一通信***，该通信***可以为第三代合作伙伴计划(third generation partnership project，3GPP)通信***，例如，长期演进(long term evolution，LTE)***，又可以为第五代(fifth generation，5G)移动通信***、新空口(new radio，NR)***、新空口车联网(vehicle to everything，NR V2X)***，还可以应用于LTE和5G混合组网的***中，或者设备到设备(device-to-device，D2D)通信***、机器到机器(machine to machine，M2M)通信***、物联网(Internet of Things，IoT)，以及其他下一代通信***，也可以为非3GPP通信***，不予限制。
本申请实施例提供的发送频率调整方法可以应用于各种通信场景，例如可以应用于以下通信场景中的一种或多种：增强移动宽带(enhanced mobile broadband，eMBB)、超可靠低时延通信(ultra reliable low latency communication，URLLC)、机器类型通信(machine type communication，MTC)、大规模机器类型通信(massive machine type communications， mMTC)、D2D、V2X、IoT、高铁通信等通信场景，不予限制。
下面以图1e为例，对本申请实施例提供的发送频率调整方法进行描述。
图1e为本申请实施例提供的一种通信***的示意图，如图1e所示，该通信***可以包括终端设备、无线接入网设备。其中，无线接入网设备可以通过多个TRP与终端设备通信连接。
其中，图1e中终端设备可以位于无线接入网设备的波束/小区覆盖范围内。其中，终端设备可以通过上行链路(uplink，UL)或下行链路(downlink，DL)与无线接入网设备进行空口通信。如：终端设备在UL方向上可以通过上行链路物理层共享信道(physical uplink shared channel，PUSCH)向无线接入网设备发送上行数据；无线接入网设备在DL方向上可以通过下行链路物理层共享信道(physical downlink shared channel，PDSCH)向终端设备发送下行数据。
图1e中的终端设备(terminal)可以是支持新空口的终端设备，可以通过空口接入通信***，并发起呼叫、上网等业务。终端设备还可以称为用户设备(user equipment，UE)或者移动台(mobile station，MS)或者移动终端(mobile terminal，MT)等。具体的，图1b中的终端设备可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。还可以是虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载终端、具有车对车(vehicle-to-vehicle，V2V)通信能力的车辆、智能网联车、有无人机对无人机(UAV to UAV，U2U)通信能力的无人机等等，不予限制。
图1e中的无线无线接入网设备可以是任意一种具有无线收发功能的设备，主要用于实现无线物理控制功能、资源调度和无线资源管理、无线接入控制以及移动性管理等功能，提供可靠的无线传输协议和数据加密协议等。具体的，无线接入网设备可以为支持有线接入的设备，也可以为支持无线接入的设备。示例性的，该无线接入网设备可以为接入网(access network，AN)/无线接入网(radio access network，RAN)设备，由多个5G-AN/5G-RAN节点组成。5G-AN/5G-RAN节点可以为：接入点(access point，AP)、基站(nodeB，NB)、增强型基站(enhance nodeB，eNB)、下一代基站(NR nodeB，gNB)、传输接收点(transmission reception point，TRP)、传输点(transmission point，TP)或某种其它接入节点等。
具体实现时，图1e所示，如：各个终端设备、无线接入网设备均可以采用图2所示的组成结构，或者包括图2所示的部件。图2为本申请实施例提供的一种通信装置200的组成示意图，该通信装置200可以为终端设备或者终端设备中的芯片或者片上***；也可以为无线接入网设备或者无线接入网设备中的芯片或者片上***。如图2所示，该通信装置200包括处理器201，收发器202以及通信线路203。
进一步的，该通信装置200还可以包括存储器204。其中，处理器201，存储器204以及收发器202之间可以通过通信线路203连接。
其中，处理器201是中央处理器(central processing unit，CPU)、通用处理器网络处理器(network processor，NP)、数字信号处理器(digital signal processing，DSP)、微处理器、微控制器、可编程逻辑器件(programmable logic device，PLD)或它们的任意组合。 处理器201还可以是其它具有处理功能的装置，例如电路、器件或软件模块，不予限制。
收发器202，用于与其他设备或其它通信网络进行通信。该其它通信网络可以为以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。收发器202可以是模块、电路、收发器或者任何能够实现通信的装置。
通信线路203，用于在通信装置200所包括的各部件之间传送信息。
存储器204，用于存储指令。其中，指令可以是计算机程序。
其中，存储器204可以是只读存储器(read-only memory，ROM)或可存储静态信息和/或指令的其他类型的静态存储设备，也可以是随机存取存储器(random access memory，RAM)或可存储信息和/或指令的其他类型的动态存储设备，还可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或其他磁存储设备等，不予限制。
需要指出的是，存储器204可以独立于处理器201存在，也可以和处理器201集成在一起。存储器204可以用于存储指令或者程序代码或者一些数据等。存储器204可以位于通信装置200内，也可以位于通信装置200外，不予限制。处理器201，用于执行存储器204中存储的指令，以实现本申请下述实施例提供的发送频率调整方法。
在一种示例中，处理器201可以包括一个或多个CPU，例如图2中的CPU0和CPU1。
作为一种可选的实现方式，通信装置200包括多个处理器，例如，除图2中的处理器201之外，还可以包括处理器207。
作为一种可选的实现方式，通信装置200还包括输出设备205和输入设备206。示例性地，输入设备206是键盘、鼠标、麦克风或操作杆等设备，输出设备205是显示屏、扬声器(speaker)等设备。
需要指出的是，通信装置200可以是台式机、便携式电脑、网络服务器、移动手机、平板电脑、无线终端、嵌入式设备、芯片***或有图2中类似结构的设备。此外，图2中示出的组成结构并不构成对该通信装置的限定，除图2所示部件之外，该通信装置可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
本申请实施例中，芯片***可以由芯片构成，也可以包括芯片和其他分立器件。
此外，本申请的各实施例之间涉及的动作、术语等均可以相互参考，不予限制。本申请的实施例中各个设备之间交互的消息名称或消息中的参数名称等只是一个示例，具体实现中也可以采用其他的名称，不予限制。
下面结合图1e所示通信***，参照下述图3，对本申请实施例提供的发送频率调整方法进行描述，其中，终端设备可以为图1e所示通信***中的任一终端设备，无线接入网设备可以为图1e所示通信***中的任一无线接入网设备。下述实施例所述的终端设备、无线接入网设备均可以具备图2所示部件。
图3为本申请实施例提供的一种发送频率调整方法的流程图，如图3所示，该方法可以包括：
步骤301、无线接入网设备通过多个TRP分别向终端设备发送TRS。
其中，不同的TRP对应不同的TRS。
示例性的，TRS可以为一个密度为3的1端口的信道状态信息参考信号(channel state  information reference signal，CSI-RS)资源，一个时隙中的TRS符号间隔为4。对于低频段，高层可以给终端设备配置一个包含4个周期CSI-RS资源的CSI-RS资源集合，这4个CSI-RS资源分布在连续的两个时隙内，每个时隙包含两个周期CSI-RS资源，并且这两个时隙中的CSI-RS资源在时域上的位置相同。对于高频段，高层可以给终端设备配置一个分布在1个时隙上包含两个周期的CSI-RS的CSI-RS资源集合，或者配置一个分布在两个连续的时隙上包含4个周期CSI-RS资源的CSI-RS资源集合，每个时隙包含两个周期的CSI-RS资源，并且这两个时隙中的CSI-RS资源在时域上的位置相同。
示例性的，以多个TRP包括TRP1和TRP2为例，无线接入网设备可以通过TRP1向终端设备发送中心频率为f c的TRS1，也可以通过TRP2向终端设备发送中心频率为f c的TRS2。
可选的，无线接入网设备通过TRP向终端设备发送TRS时，可以将TRS携带在物理下行共享信道(physical downlink shared channel，PDSCH)或物理下行控制信道(physical downlink control channel，PDCCH)中，通过TRP发送给终端设备。
步骤302、终端设备根据参考TRP，确定上行发送频率。
其中，终端设备可以通过测量得到多个TRP分别发送的TRS，并将多个TRP中的一个TRP确定为参考TRP。
一种可能的设计中，终端设备接收来自无线接入网设备的第一标识信息；其中，第一标识信息用于指示参考TRP。
其中，第一标识信息可以为参考TRP的ID、IP地址等可以用于指示参考TRP的标识信息，不予限制。
示例性的，无线接入网设备可以按照一定规划，如将网络划分成多个覆盖范围，为划分出的覆盖范围指定一个TRP作为参考TRP，并将参考TRP对应的第一标识信息发送给该覆盖范围内的终端设备。
示例性的，终端设备也可以将自身的位置信息发送给无线接入网设备，以使无线接入网设备根据终端设备的位置信息，确定终端设备对应的参考TRP，并向终端设备发送参考TRP对应的第一标识信息。
又一种示例中，终端设备也可以对无线接入网设备通过多个TRP发送的下行参考信号进行测量，得到各个TRP对应的下行参考信号的信号强度，并将各个TRP对应的下行参考信号的信号强度发送给无线接入网设备，由无线接入网设备根据终端设备对应的各个下行参考信号的信号强度，确定终端设备对应的参考TRP，并向终端设备发送参考TRP对应的第一标识信息。
其中，无线接入网设备可以将终端设备对应的各个下行参考信号中，信号强度最大的下行参考信号对应的TRP确定为终端设备对应的参考TRP。
可选的，下行参考信号为TRS、CSI-RS、DMRS、同步信号(synchronization signal，SS)等参考信号，不予限制。
可选的，终端设备根据参考信号接收功率(reference signal received power，RSRP)、参考信号接收质量(reference signal received quality，RSRQ)、信号干扰噪声比(signal to interference plus noise ratio，SINR)等可以用于指示信号强度的参数，确定下行参考信号的信号强度。
例如，以无线接入网设备通过TRP1、TRP2、TRP3向终端设备分别发送TRS1、TRS2、TRS3为例，终端设备可以对接收到的TRS1、TRS2、TRS3进行测量，得到TRS1的信号强度、TRS2的信号强度、TRS3的信号强度，并将TRS1的信号强度、TRS2的信号强度、TRS3的信号强度发送给无线接入网设备，无线接入网设备根据TRS1的信号强度、TRS2的信号强度、TRS3的信号强度，确定信号强度最大的TRS，假设信号强度最大的TRS为TRS1，则无线接入网设备可以将TRS1对应的TRP1确定为终端设备对应的参考TRP，并将TRP1对应的第一标识信息发送给终端设备。
需要说明的是，终端设备也可以根据各个下行参考信号的信号强度，将各个下行参考信号的信号强度之间的大小关系发送给无线接入网设备，无线接入网设备根据该大小关系确定参考TRP。
例如，以终端设备确定各个下行参考信号TRS的信号强度之间的大小关系为：TRS1>TRS3>TRS2为例，终端设备可以将该大小关系发送给无线接入网设备，无线接入网设备根据该大小关系，将TRS1对应的TRP确定为终端设备对应的参考TRP，并将该参考TRP对应的第一标识信息发送给终端设备。
类似的，终端设备也可以对无线接入网设备通过多个TRP发送的下行参考信号进行多普勒频移估计，得到各个TRP对应的下行参考信号的多普勒频移，并将各个TRP对应的下行参考信号的多普勒频移发送给无线接入网设备，由无线接入网设备根据终端设备对应的各个下行参考信号的多普勒频移，确定终端设备对应的参考TRP，并向终端设备发送参考TRP对应的第一标识信息。
其中，无线接入网设备可以将终端设备对应的各个下行参考信号中，多普勒频移最大的下行参考信号对应的TRP确定为终端设备对应的参考TRP。
又一种示例中，无线接入网设备对终端设备通过多个TRP发送的上行参考信号进行测量，得到各个TRP对应的上行参考信号的信号强度，并根据各个TRP对应的上行参考信号的信号强度，确定终端设备对应的参考TRP，并向终端设备发送参考TRP对应的第一标识信息。
其中，无线接入网设备可以将各个TRP对应的上行参考信号中，信号强度最大的上行参考信号对应的TRP确定为终端设备对应的参考TRP。
可选的，上行参考信号可以为信道探测参考信号(sounding reference signal，SRS)、DMRS等其它参考信号，不予限制。
可选的，终端设备根据RSRP、RSRQ、SINR等可以用于指示信号强度的参数，确定下行参考信号的信号强度。
例如，以终端设备分别通过TRP1、TRP2、TRP3向无线接入网设备分别发送SRS1、SRS2、SRS3为例，无线接入网设备可以对接收到的SRS1、SRS2、SRS3进行测量，得到SRS1的信号强度、SRS2的信号强度、SRS3的信号强度，假设无线接入网设备根据SRS1的信号强度、SRS2的信号强度、SRS3的信号强度，确定信号强度最大的SRS为SRS1，则无线接入网设备可以将SRS1对应的TRP1确定为终端设备对应的参考TRP，并将TRP1对应的第一标识信息发送给终端设备。
类似的，无线接入网设备也可以对终端设备通过多个TRP发送的上行参考信号进行多普勒频移估计，得到各个TRP对应的上行参考信号的多普勒频移，并根据各个TRP对应 的上行参考信号的多普勒频移，确定终端设备对应的参考TRP，并向终端设备发送参考TRP对应的第一标识信息。
其中，无线接入网设备可以将各个TRP对应的上行参考信号中，多普勒频移最大的上行参考信号对应的TRP确定为终端设备对应的参考TRP。
例如，以终端设备分别通过TRP1、TRP2、TRP3向无线接入网设备分别发送DMRS1、DMRS2、DMRS3为例，无线接入网设备可以对接收到的DMRS1、DMRS2、DMRS3进行多普勒频移估计，得到DMRS1的多普勒频移、DMRS2的多普勒频移、DMRS3的多普勒频移，假设无线接入网设备根据DMRS1的多普勒频移、DMRS2的多普勒频移、DMRS3的多普勒频移，确定多普勒频移最大的DMRS为DMRS1，则无线接入网设备可以将DMRS1对应的TRP1确定为终端设备对应的参考TRP，并将TRP1对应的第一标识信息发送给终端设备。
可选的，无线接入网设备采用组播的方式将参考TRP对应的第一标识信息发送给参考TRP对应的覆盖范围内的终端设备。
例如，以无线接入网设备确定覆盖范围1对应参考TRP1，覆盖范围2对应参考TRP2，假设覆盖范围1内包括终端设备1、终端设备2、终端设备3，覆盖范围2内包括终端设备4、终端设备5和终端设备6，无线接入网设备可以采用组播的方式向终端设备1、终端设备2、终端设备3发送参考TRP1对应的第一标识信息，采用组播的方式向终端设备4、终端设备5和终端设备6发送参考TRP2对应的第一标识信息。
需要说明的是，无线接入网设备可以通过参考TRP向终端设备发送第一标识信息，也可以通过非参考TRP向终端设备发送第一标识信息，不予限制。
又一种可能的设计中，终端设备测量多个TRP分别发送的下行参考信号；根据多个下行参考信号的测量结果，确定参考TRP。
其中，下行参考信号可以为TRS、CSI-RS、DMRS、SS等参考信号，不予限制。
示例性的，下行参考信号的测量结果可以包括下述一种或多种：信号强度、多普勒频移。
当下行参考信号的测量结果为信号强度时，终端设备可以根据多个下行参考信号的信号强度，将信号强度最强的下行参考信号对应的TRP确定为参考TRP。
其中，终端设备可以根据RSRP、RSRQ、SINR等可以用于指示信号强度的参数，确定下行参考信号的信号强度。
当下行参考信号的测量结果为多普勒频移时，终端设备可以对每个下行参考信号进行多普勒频移估计，得到每个下行参考信号的多普勒频移，并将多普勒频移最大的下行参考信号对应的TRP确定为参考TRP。
示例性的，以下行参考信号为上述步骤301中无线接入网设备通过多个TRP向终端设备发送的TRS为例，终端设备可以采用下述方式对每个TRS进行多普勒频移估计，得到每个TRS的多普勒频移：
以终端设备接收到的TRS在一个时隙(slot)中的位置如图5所示为例，假设无线接入网设备通过TRP在一个slot中M个频域上发送的TRS为x＝[x 1，x 2，…，x N]，且终端设备接收到的一个slot中两个频域的TRS为r 1＝[r 11，r 12，…，r 1N]和r 2＝[r 21，r 22，…，r 2N]，其中，N为一个OFDM符号中映射的TRS信号的个数。则终端设备可以先将r 1和r 2中的 每个元素分别与x中的每个元素相除，得到h 1＝[h 11，h 12，…，h 1N]和h 2＝[h 21，h 22，…，h 2N]；然后终端设备可以根据下述公式估计TRS的多普勒频移：
Figure PCTCN2021072261-appb-000004
其中，t可以为两列TRS所在各自OFDM符号的时间间隔，单位可以为秒。
需要说明的是，终端设备能估计出的最大多普勒频移与TRS的间隔相关。
其中，终端设备根据上述方式估计出每个TRS的多普勒频移后，可以将多普勒频移最大的TRS对应的TRP确定为参考TRP。
进一步的，终端设备根据下行参考信号确定参考TRP之后，可以向无线接入网设备发送第二标识信息。
其中，第二标识信息可以用于指示终端设备对应的参考TRP。
示例性的，第二标识信息可以为参考TRP的ID、IP地址等可以用于指示参考TRP的标识信息，不予限制。
需要说明的是，终端设备可以通过参考TRP向无线接入网设备发送第二标识信息，也可以通过非参考TRP向无线接入网设备发送第二标识信息，不予限制。
基于上述两种可能的设计，当终端设备确定参考TRP后，终端设备可以根据参考TRP对应的TRS，确定该TRS的多普勒频移，并根据该TRS的中心频率与该TRS的多普勒频移，确定上行发送频率。
示例性的，终端设备可以将参考TRP对应的TRS的中心频率与该TRS的多普勒频移的和，确定为上行发送频率。
例如，如图4所示，以参考TRP对应TRS1为例，假设TRS1的中心频率为f c，且终端设备根据TRS1估计的多普勒频移为f dri；则终端设备可以将f c+f dri确定为终端设备向参考TRP发送上行信号1时的上行发送频率。
其中，终端设备可以根据如图5所示的方法估计TRS的多普勒频移，不予赘述。
需要说明的是，当下行参考信号为无线接入网设备通过TRP发送的TRS，终端设备在根据TRS的多普勒频移确定参考TRP后，可以直接根据该参考TRP对应的TRS的中心频率和该TRS的多普勒频移，确定上行发送频率。
步骤303、终端设备在上行发送频率发送上行信号。
其中，上行信号可以包括DMRS。
具体的，终端设备可以在上行发送频率，通过参考TRP向无线接入网设备发送上行信号1。
示例性的，上行信号可以为PUCCH、PUSCH等，不予限制。
需要说明的是，当终端设备需要向非参考TRP发送上行信号2时，终端设备也可以通过上行发送频率f c+f dri向非参考TRP发送上行信号2。
步骤304、无线接入网设备根据上行信号，确定频率调整参数。
其中，无线接入网设备可以通过参考TRP接收终端设备发送的上行信号，并对上行信号进行多普勒频移估计，根据估计出的多普勒频移，确定频率调整参数。
示例性的，无线接入网设备可以参照上述描述图1d时介绍的方法，根据上行信号中的DMRS，估计通过参考TRP接收到的上行信号的多普勒频移，不予赘述。
例如，如图4所示，以上行发送频率为f c+f dri为例，终端设备可以基于该上行发送频 率，通过参考TRP向无线接入网设备发送上行信号，无线接入网设备接收到上行信号后，可以进行多普勒频移估计，确定无线接入网设备通过参考TRP接收到的上行信号的多普勒频移为2f dri。
具体的，无线接入网设备可以通过RRC信令预先配置预补偿系数的取值集合，并根据参考TRP对应的上行信号的多普勒频移，从预补偿系数的取值集合中确定预补偿系数。
例如，预补偿系数的集合可以为{0，0.5，0.75}，无线接入网设备可以从该取值集合中选取一个值作为预补偿系数。
进一步的，无线接入网设备也可以对通过非参考TRP接收到的上行信号进行多普勒频移估计，并根据参考TRP对应的上行信号的多普勒频移和非参考TRP对应的上行信号的多普勒频移，从预补偿系数的取值集合中确定预补偿系数。
其中，如图6所示，参考TRP对应的上行信号的多普勒频移的绝对值可以为|2f dri|；非参考TRP对应的上行信号的多普勒频移的绝对值可以为|f dri|+|f dmi|；其中，f dmi为|终端设备到非参考TRP的多普勒频移。
以预补偿系数为k为例，当终端设备根据预补偿系数k对上行发送频率f c+f dri进行调整后，无线接入网设备通过参考TRP接收到的上行信号的多普勒频移的绝对值可以为|2f dri-k*2f dri|，即|2(1-k)*f dri|；通过非参考TRP接收到的上行信号的多普勒频移可以为|f dri+f dmi-k*2f dri|，即|(1-2k)*f dri|+|f dmi|。
基于上述图6，可以看出当0≤k≤0.5时，参考TRP处多普勒频移大小与非参考TRP处多普勒频移大小随着k增大而减小；当0.5≤k≤1时，参考TRP处多普勒频移大小随着k增大而减小，非参考TRP处多普勒频移大小随着k增大而增大。
如下述表1所示，k取不同的值，参考TRP与非参考TRP对应的多普勒频移补偿效果不同，无线接入网设备可以参照上述图6和下述表1，根据实际通信需求从预补偿系数的取值集合中合理选取k值。
表1
预补偿系数k 参考TRP 非参考TRP
k＝0 没补偿 没补偿
k＝0.5 补偿一半 降低到最低值
k＝1 全补偿，多普勒频移为0 没补偿
例如，以预补偿系数的集合为{0，0.5，0.75}为例，无线接入网设备可以在|2f dri|小于第一阈值时，确定预补偿系数为0；在|2f dri|大于第一阈值，小于第二阈值时，确定预补偿系数为0.5，在|2f dri|大于第二阈值时，确定预补偿系数为0.75。
一种可能的设计中，频率调整参数包括上述预补偿系数。
示例性的，无线接入网设备可以通过DCI信令从预补偿系数的取值集合中激活一个预补偿系数，并将激活后的预补偿系数携带在DCI信令中通过参考TRP发送给终端设备。
又一种示例中，无线接入网设备也可以通过MAC CE信令从预补偿系数的取值集合中激活一个预补偿系数，并将激活后的预补偿系数携带在MAC CE信令中通过参考TRP发送给终端设备。
基于上述两种可能的示例，无线接入网设备可以在DCI信令或者MAC CE信令中通过2bit的信息激活预补偿系数。
又一种可能的设计中，频率调整参数包括预补偿系数的索引。
其中，无线接入网设备可以根据上行信号的多普勒频移，从预补偿系数的取值集合中确定一个预补偿系数，并通过参考TRP将确定的预补偿系数的索引发送给参考TRP对应的终端设备。
需要说明的是，无线接入网设备可以通过RRC信令给终端设备预先配置预补偿系数的取值集合，以使终端设备接收到预补偿系数的索引后，根据预先配置的预补偿系数的取值集合，确定预补偿系数。
与上述无线接入网设备向终端设备发送激活后的预补偿系数相比，无线接入网设备通过参考TRP向终端设备发送预补偿系数的索引，可以降低信令开销。
可选的，无线接入网设备通过DCI信令或MAC CE信令将预补偿系数的索引发送给终端设备。
又一种可能的设计中，频率调整参数包括频率调整值。
可选的，无线接入网设备根据上行信号的多普勒频移，从预补偿系数的取值集合中确定一个预补偿系数，并根据上行信号的多普勒频移与预补偿系数，确定频率调整值，通过参考TRP将频率调整值发送给参考TRP对应的终端设备。
其中，频率调整值可以为k*2f dri，k为预补偿系数。
可替换的，无线接入网设备按照一定比例对上行信号的多普勒频移进行量化，得到频率调整值。
例如，
Figure PCTCN2021072261-appb-000005
上行信号的初始多普勒频移；其中，n可以为通信协议预先规定的，也可以是无线接入网设备自定义的，不予限制。
步骤305、无线接入网设备通过参考TRP向终端设备发送频率调整FA命令。
其中，FA命令可以用于指示频率调整参数。
一种可能的设计中，无线接入网设备周期性通过参考TRP向终端设备发送FA命令。
示例性的，无线接入网设备可以通过RRC信令预先配置预补偿周期，并在预补偿周期到来时，通过参考TRP向终端设备发送FA命令。
其中，预补偿周期的单位可以是时隙，OFDM符号或秒等，不予限制。
又一种可能的设计中，当上行信号对应的多普勒频移大于或等于预设阈值时，无线接入网设备通过参考TRP向终端设备发送FA命令。
示例性的，无线接入网设备可以对上行信号的多普勒频移进行评估，当上行信号的多普勒频移大于等于预设阈值时，确定频率调整参数，并将频率调整参数通过参考TRP发送给终端设备。
进一步的，无线接入网设备在通过参考TRP向终端设备发送FA命令时，还可以通过一个或多个非参考TRP向终端设备发送FA命令，提高终端设备接收FA命令的可靠性。
步骤306、终端设备根据FA命令，对上行发送频率进行调整。
示例性的，当FA命令用于指示预补偿系数时，终端设备可以根据预补偿系数对上行发送频率进行调整。当FA命令用于指示预补偿系数的索引时，终端设备可以预补偿系数的索引确定预补偿系数，并根据预补偿系数对上行发送频率进行调整。
例如，如图4所示，以上行发送频率为f c+f dri，且预补偿系数为k为例，终端设备可以将上行发送频率由f c+f dri调整为f c+f dri-k*2f dri；其中，k*2f dri也可以描述为图4中的FA。
进一步的，终端设备可以采用调整后的上行发送频率通过多个TRP向无线接入网设备发送上行信号。
例如，以调整后的上行发送频率f c+f dri-k*2f dri为例，终端设备可以采用f c+f dri-k*2f dri通过多个TRP向无线接入网设备发送上行信号。
基于上述图3所示的方法，终端设备通过将多个TRP中的一个TRP作为参考TRP，并根据该参考TRP确定上行发送频率，可以使得无线接入网设备根据该上行发送频率，估计上行多普勒频移，进而确定频率调整参数，终端设备通过根据该频率调整参数对上行发送频率进行调整，可以同时降低多个TRP接收到的上行信号的多普勒频移，使得无线接入网设备可以正确跟踪接收到的上行信号的中心频率，提高无线接入网设备的解调性能。
上述主要从设备之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对各个设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，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。
在采用对应各个功能划分各个功能模块的情况下，图7示出了一种终端设备，终端设备70可以包括处理模块701和收发模块702。示例性地，终端设备70可以是终端设备，也可以是应用于终端设备中的芯片或者其他具有上述终端设备功能的组合器件、部件等。当终端设备70是终端设备时，处理模块701可以是处理器(或者，处理电路)，例如基带处理器，基带处理器中可以包括一个或多个CPU；收发模块702可以是收发器，收发器可以包括天线和射频电路等。当终端设备70是具有上述终端设备功能的部件时，处理模块701可以是处理器(或者，处理电路)，例如基带处理器；收发模块702可以是射频单元。当终端设备70是芯片***时，处理模块701可以是芯片***的处理器(或者，处理电路)，可以包括一个或多个中央处理单元；收发模块702可以是芯片(例如基带芯片)的输入输出接口。应理解，本申请实施例中的处理模块701可以由处理器或处理器相关电路组件(或者，称为处理电路)实现；收发模块702可以由收发器或收发器相关电路组件实现。
例如，处理模块701可以用于执行图3-图6所示的实施例中由终端设备所执行的除了收发操作之外的全部操作，和/或用于支持本文所描述的技术的其它过程；收发模块702可以用于执行图3-图6所示的实施例中由终端设备所执行的全部收发操作，和/或用于支持本文所描述的技术的其它过程。
其中，处理模块701，用于测量多个TRP分别发送的TRS，并根据参考TRP，确定上行发送频率；其中，不同的TRP对应不同的TRS；参考TRP是多个TRP中的一个；
收发模块702，用于在上行发送频率发送上行信号，并接收来自参考TRP的频率调整FA命令；其中，FA命令用于指示频率调整参数；频率调整参数根据上行信号确定；
处理模块701，还用于根据FA命令，对上行发送频率进行调整。
一种可能的设计中，收发模块702，还用于接收来自无线接入网设备的用于指示参考TRP的第一标识信息。
一种可能的设计中，处理模块701，还用于测量多个TRP分别发送的下行参考信号；并根据多个下行参考信号的测量结果，确定参考TRP。
一种可能的设计中，下行参考信号的测量结果包括下述一种或多种：信号强度、多普勒频移。
一种可能的设计中，处理模块701，具体用于根据多个下行参考信号的信号强度，将信号强度最强的下行参考信号对应的TRP确定为参考TRP。
一种可能的设计中，处理模块701，具体用于根据多个下行参考信号的多普勒频移，将多普勒频移最大的下行参考信号对应的TRP确定为参考TRP。
一种可能的设计中，收发模块702，还用于发送用于指示终端设备对应的参考TRP的第二标识信息。
一种可能的设计中，频率调整参数包括预补偿系数；或者，频率调整参数包括预补偿系数的索引；其中，预补偿系数为预设预补偿系数的取值集合中的一个；或者，频率调整参数包括频率调整值。
一种可能的设计中，终端设备还接收多个TRP中，除参考TRP外的一个或多个TRP发送的FA命令。
作为又一种可实现方式，图7中的处理模块701可以由处理器代替，该处理器可以集成处理模块701的功能；收发模块702可以由处理器代替，该处理器可以集成收发模块702的功能。进一步的，图7所示终端设备70还可以包括存储器。当处理模块701由处理器代替，收发模块702由收发器代替时，本申请实施例所涉及的终端设备70可以为图2所示通信装置。
在采用对应各个功能划分各个功能模块的情况下，图8示出了一种无线接入网设备，无线接入网设备80可以包括收发模块801和处理模块802。示例性地，无线接入网设备80可以是无线接入网设备，也可以是应用于无线接入网设备中的芯片或者其他具有上述无线接入网设备功能的组合器件、部件等。当无线接入网设备80是无线接入网设备时，收发模块801可以是收发器，收发器可以包括天线和射频电路等；处理模块802可以是处理器(或者，处理电路)，例如基带处理器，基带处理器中可以包括一个或多个CPU。当无线接入网设备80是具有上述无线接入网设备功能的部件时，收发模块801可以是射频单元；处理模块802可以是处理器(或者，处理电路)，例如基带处理器。当无线接入网设备80是芯片***时，收发模块801可以是芯片(例如基带芯片)的输入输出接口；处理模块802可以是芯片***的处理器(或者，处理电路)，可以包括一个或多个中央处理单元。应理解，本申请实施例中的收发模块801可以由收发器或收发器相关电路组件实现；处理模块802可以由处理器或处理器相关电路组件(或者，称为处理电路)实现。
例如，收发模块801可以用于执行图3-图6所示的实施例中由无线接入网设备所执行的全部收发操作，和/或用于支持本文所描述的技术的其它过程；处理模块802可以用于执 行图3-图6所示的实施例中由无线接入网设备所执行的除了收发操作之外的全部操作，和/或用于支持本文所描述的技术的其它过程。
其中，收发模块801，用于通过多个TRP分别向终端设备发送TRS，并接收来自终端设备的上行信号；其中，不同的TRP对应不同的TRS；上行信号的上行发送频率根据参考TRP确定；参考TRP是多个TRP中的一个；
处理模块802，用于根据上行信号，确定频率调整参数；
收发模块801，还用于通过参考TRP向终端设备发送频率调整FA命令；其中，FA命令用于指示频率调整参数。
一种可能的设计中，收发模块801，还用于向终端设备发送用于指示参考TRP的第一标识信息。
一种可能的设计中，收发模块801，还用于接收来自终端设备的用于指示终端设备对应的参考TRP的第二标识信息。
一种可能的设计中，频率调整参数包括预补偿系数；或者，频率调整参数包括预补偿系数的索引；其中，预补偿系数为预设预补偿系数的取值集合中的一个；或者，频率调整参数包括频率调整值。
一种可能的设计中，无线接入网设备还通过多个TRP中，除参考TRP之外的一个或多个TRP向终端设备发送FA命令。
作为又一种可实现方式，图8中的收发模块801可以由收发器代替，该收发器可以集成收发模块801的功能；处理模块802可以由处理器代替，该处理器可以集成处理模块802的功能。进一步的，图8所示无线接入网设备80还可以包括存储器。当收发模块801由收发器代替，处理模块802由处理器代替时，本申请实施例所涉及的无线接入网设备80可以为图2所示通信装置。
本申请实施例还提供了一种计算机可读存储介质。上述方法实施例中的全部或者部分流程可以由计算机程序来指令相关的硬件完成，该程序可存储于上述计算机可读存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。计算机可读存储介质可以是前述任一实施例的终端(包括数据发送端和/或数据接收端)的内部存储单元，例如终端的硬盘或内存。上述计算机可读存储介质也可以是上述终端的外部存储设备，例如上述终端上配备的插接式硬盘，智能存储卡(smart media card,SMC)，安全数字(secure digital,SD)卡，闪存卡(flash card)等。进一步地，上述计算机可读存储介质还可以既包括上述终端的内部存储单元也包括外部存储设备。上述计算机可读存储介质用于存储上述计算机程序以及上述终端所需的其他程序和数据。上述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。
需要说明的是，本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，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、***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
应当理解，在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上，“至少两个(项)”是指两个或三个及三个以上，“和/或”，用于描述关联对象的关 联关系，表示可以存在三种关系，例如，“A和/或B”可以表示：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”，其中a，b，c可以是单个，也可以是多个。
通过以上的实施方式的描述，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，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，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装置，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。
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一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元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，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该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个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (29)

  1. 一种发送频率调整方法，其特征在于，包括：
    终端设备测量多个传输接收点TRP分别发送的跟踪参考信号TRS；其中，不同的TRP对应不同的TRS；
    所述终端设备根据参考TRP确定上行发送频率；其中，所述参考TRP是所述多个TRP中的一个；
    所述终端设备在所述上行发送频率发送上行信号；
    所述终端设备接收来自所述参考TRP的频率调整FA命令；其中，所述FA命令用于指示频率调整参数；所述频率调整参数根据所述上行信号确定；
    所述终端设备根据所述FA命令，对所述上行发送频率进行调整。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自无线接入网设备的第一标识信息；其中，所述第一标识信息用于指示所述参考TRP。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述终端设备测量所述多个TRP分别发送的下行参考信号；
    所述终端设备根据多个所述下行参考信号的测量结果，确定所述参考TRP。
  4. 根据权利要求3所述的方法，其特征在于，
    所述下行参考信号的测量结果包括下述一种或多种：信号强度、多普勒频移。
  5. 根据权利要求4所述的方法，其特征在于，所述终端设备根据多个所述下行参考信号的测量结果，确定所述参考TRP，包括：
    所述终端设备根据多个所述下行参考信号的信号强度，将信号强度最强的下行参考信号对应的TRP确定为所述参考TRP。
  6. 根据权利要求4所述的方法，其特征在于，所述终端设备根据多个所述下行参考信号的测量结果，确定所述参考TRP，包括：
    所述终端设备根据多个所述下行参考信号的多普勒频移，将多普勒频移最大的下行参考信号对应的TRP确定为所述参考TRP。
  7. 根据权利要求3-6任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备发送第二标识信息；其中，所述第二标识信息用于指示所述终端设备对应的所述参考TRP。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，
    所述频率调整参数包括预补偿系数；或者
    所述频率调整参数包括预补偿系数的索引；其中，所述预补偿系数为预设预补偿系数的取值集合中的一个；或者
    所述频率调整参数包括频率调整值。
  9. 一种发送频率调整方法，其特征在于，包括：
    无线接入网设备通过多个传输接收点TRP分别向终端设备发送跟踪参考信号TRS；其中，不同的TRP对应不同的TRS；
    所述无线接入网设备接收来自所述终端设备的上行信号；其中，所述上行信号的上行发送频率根据参考TRP确定；所述参考TRP是所述多个TRP中的一个；
    所述无线接入网设备根据所述上行信号，确定频率调整参数；
    所述无线接入网设备通过所述参考TRP向所述终端设备发送频率调整FA命令；其中，所述FA命令用于指示所述频率调整参数。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述无线接入网设备向所述终端设备发送第一标识信息；其中，所述第一标识信息用于指示所述参考TRP。
  11. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述无线接入网设备接收来自所述终端设备的第二标识信息；其中，所述第二标识信息用于指示所述终端设备对应的所述参考TRP。
  12. 根据权利要求9-11任一项所述的方法，其特征在于，
    所述频率调整参数包括预补偿系数；或者
    所述频率调整参数包括预补偿系数的索引；其中，所述预补偿系数为预设预补偿系数的取值集合中的一个；或者
    所述频率调整参数包括频率调整值。
  13. 一种终端设备，其特征在于，包括：
    处理模块，用于测量多个传输接收点TRP分别发送的跟踪参考信号TRS；其中，不同的TRP对应不同的TRS；
    所述处理模块，还用于根据参考TRP确定上行发送频率；其中，所述参考TRP是所述多个TRP中的一个；
    收发模块，与所述处理模块通信耦合，用于在所述上行发送频率发送上行信号；
    所述收发模块，还用于接收来自所述参考TRP的频率调整FA命令；其中，所述FA命令用于指示频率调整参数；所述频率调整参数根据所述上行信号确定；
    所述处理模块，还用于根据所述FA命令，对所述上行发送频率进行调整。
  14. 根据权利要求13所述的终端设备，其特征在于，
    所述收发模块，还用于接收来自无线接入网设备的第一标识信息；其中，所述第一标识信息用于指示所述参考TRP。
  15. 根据权利要求13所述的终端设备，其特征在于，
    所述处理模块，还用于测量所述多个TRP分别发送的下行参考信号；
    所述处理模块，还用于根据多个所述下行参考信号的测量结果，确定所述参考TRP。
  16. 根据权利要求15所述的终端设备，其特征在于，
    所述下行参考信号的测量结果包括下述一种或多种：信号强度、多普勒频移。
  17. 根据权利要求16所述的终端设备，其特征在于，
    所述处理模块，具体用于根据多个所述下行参考信号的信号强度，将信号强度最强的下行参考信号对应的TRP确定为所述参考TRP。
  18. 根据权利要求16所述的终端设备，其特征在于，
    所述处理模块，具体用于根据多个所述下行参考信号的多普勒频移，将多普勒频移最大的下行参考信号对应的TRP确定为所述参考TRP。
  19. 根据权利要求15-18任一项所述的终端设备，其特征在于，
    所述收发模块，还用于发送第二标识信息；其中，所述第二标识信息用于指示所述终 端设备对应的所述参考TRP。
  20. 根据权利要求13-19任一项所述的终端设备，其特征在于，
    所述频率调整参数包括预补偿系数；或者
    所述频率调整参数包括预补偿系数的索引；其中，所述预补偿系数为预设预补偿系数的取值集合中的一个；或者
    所述频率调整参数包括频率调整值。
  21. 一种无线接入网设备，其特征在于，包括：
    收发模块，用于通过多个传输接收点TRP分别向终端设备发送跟踪参考信号TRS；其中，不同的TRP对应不同的TRS；
    所述收发模块，还用于接收来自所述终端设备的上行信号；其中，所述上行信号的上行发送频率根据参考TRP确定；所述参考TRP是所述多个TRP中的一个；
    处理模块，与所述收发模块通信耦合，用于根据所述上行信号，确定频率调整参数；
    所述收发模块，还用于通过所述参考TRP向所述终端设备发送频率调整FA命令；其中，所述FA命令用于指示所述频率调整参数。
  22. 根据权利要求21所述的无线接入网设备，其特征在于，
    所述收发模块，还用于向所述终端设备发送第一标识信息；其中，所述第一标识信息用于指示所述参考TRP。
  23. 根据权利要求21所述的无线接入网设备，其特征在于，
    所述收发模块，还用于接收来自所述终端设备的第二标识信息；其中，所述第二标识信息用于指示所述终端设备对应的所述参考TRP。
  24. 根据权利要求21-23任一项所述的无线接入网设备，其特征在于，
    所述频率调整参数包括预补偿系数；或者
    所述频率调整参数包括预补偿系数的索引；其中，所述预补偿系数为预设预补偿系数的取值集合中的一个；或者
    所述频率调整参数包括频率调整值。
  25. 一种通信装置，其特征在于，所述通信装置包括处理器；所述处理器，用于运行计算机程序或指令，以使所述通信装置执行如权利要求1-8任一项所述的发送频率调整方法，或者执行如权利要求9-12任一项所述的发送频率调整方法。
  26. 一种通信装置，其特征在于，所述通信装置包括处理器和通信接口；所述通信接口和所述处理器耦合，所述处理器用于运行计算机程序或指令，以实现如权利要求1-8任一项所述的发送频率调整方法，或者执行如权利要求9-12任一项所述的发送频率调整方法，所述通信接口用于与所述通信装置之外的其它模块进行通信。
  27. 一种通信装置，其特征在于，所述通信装置包括接口电路和逻辑电路；所述接口电路，用于获取输入信息和/或输出信息；所述逻辑电路用于执行如权利要求1-8任一项所述的发送频率调整方法，或者执行如权利要求9-12任一项所述的发送频率调整方法，根据所述输入信息进行处理和/或生成所述输出信息。
  28. 一种计算机可读存储介质，其特征在于，计算机可读存储介质存储有计算机指令或程序，当计算机指令或程序在计算机上运行时，使得计算机执行如权利要求1-8任一项所述的发送频率调整方法，或者执行如权利要求9-12任一项所述的发送频率调整方法。
  29. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机指令；当部分或全部所述计算机指令在计算机上运行时，使得计算机执行如权利要求1-8任一项所述的发送频率调整方法，或者执行如权利要求9-12任一项所述的发送频率调整方法。
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