Wireless communication method and device

Abstract

The embodiments of the present application provide a wireless communication method and device, which can enable a terminal device to flexibly select a resource utilization method used to transmit an SRS on a time domain resource unit, so that the function of the time domain resource unit can be realized on demand, and thus reasonable SRS transmission can be realized to improve communication performance. The method includes: the terminal device determines at least one time domain resource unit occupied by SRS transmission on an SRS resource; the terminal device determines the resource utilization method used to transmit the SRS on the at least one time domain resource unit; according to the determined resource utilization method, the terminal device transmits the SRS on the at least one time domain resource unit.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a wireless communication method and device. Background Art

[0002] In a wireless communication system, a terminal device may send a sounding reference signal (SRS) through an SRS resource.

[0003] The network device can perform, for example, channel state information (CSI) measurement and beam management based on the SRS sent by the terminal.

[0004] In future wireless communication systems, communication scenarios vary. How to achieve reasonable SRS transmission to improve communication performance is an urgent problem to be solved. Summary of the invention

[0005] The embodiments of the present application provide a wireless communication method and device, which can enable a terminal device to flexibly select a resource utilization method for transmitting SRS on a time domain resource unit, thereby realizing the function of the time domain resource unit on demand, and thus achieving reasonable SRS transmission to improve communication performance.

[0006] In a first aspect, a wireless communication method is provided, comprising: a terminal device determines at least one time domain resource unit occupied by SRS transmission on an SRS resource; the terminal device determines a resource utilization method used to transmit SRS on the at least one time domain resource unit; and according to the determined resource utilization method, the terminal device performs SRS transmission on the at least one time domain resource unit.

[0007] In combination with the first aspect, in a possible implementation manner of the first aspect, the resource utilization method is a method in which the terminal device utilizes frequency domain resources, transmitting antennas and / or transmitting beams when performing SRS transmission on the at least one time domain resource unit.

[0008] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, the method of utilizing frequency domain resources, antennas and / or transmit beams includes: a switching method of at least one of the frequency domain resources, transmit antennas and transmit beams in the at least one time domain resource unit.

[0009] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, the method of utilizing frequency domain resources, antennas and / or transmit beams indicates whether at least one of the frequency domain resources, transmit antennas and transmit beams is switched on the at least one time domain resource unit.

[0010] In combination with the first aspect or any one of the above possible implementation methods, in another possible implementation method of the first aspect, the resource utilization method includes: performing resource hopping of frequency domain resources in the at least one time domain resource unit; or, switching the transmitting antenna in the at least one time domain resource unit; or, switching the transmitting beam in the at least one time domain resource unit; or, using the same beam and the same frequency domain resources for transmission in the at least one time domain resource unit.

[0011] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, switching of transmitting antennas is performed in the at least one time domain resource unit, including: switching of transmitting antennas within the same antenna array block in the at least one time domain resource unit; or switching between different antenna array blocks in the at least one time domain resource unit.

[0012] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, the terminal device determines the resource utilization method used to transmit the SRS in the at least one time domain resource unit, including: according to the parameter configuration of the SRS resource, the terminal device determines the resource utilization method.

[0013] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, the parameter configuration of the SRS resources includes the configuration of the network device for a resource utilization method for transmitting the SRS on the at least one time domain resource unit; based on the parameter configuration of the SRS resources, the terminal device determines the resource utilization method, including: based on the configuration of the network device for a resource utilization method for transmitting the SRS on the at least one time domain resource unit, the terminal device determines the resource utilization method.

[0014] In combination with the first aspect or any of the foregoing possible implementations, in another possible implementation of the first aspect, the terminal device determining the resource utilization mode according to the parameter configuration of the SRS resource includes: the terminal device determining the resource utilization mode according to at least one configuration of the following:

[0015] The transmission bandwidth of the SRS resource;

[0016] the number of antenna ports for performing SRS transmission on the SRS resource;

[0017] the number of the at least one time domain resource unit occupied by the SRS resource;

[0018] a continuous manner of transmitting the SRS on the SRS resource;

[0019] SRS frequency hopping configuration of the SRS resource;

[0020] The subcarrier spacing occupied by transmitting the SRS on the SRS resource;

[0021] The SRS type of the SRS resource.

[0022] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, the continuous mode of transmitting the SRS on the SRS resource includes: a periodic transmission mode, a quasi-continuous transmission mode, or a non-periodic transmission mode.

[0023] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, the SRS type of the SRS resource is: SRS for channel state information CSI measurement; or SRS for beam management.

[0024] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, when the number of antenna ports for SRS transmission on the SRS resource is less than a first predetermined value, the determined resource utilization method is to switch the transmitting antenna in the at least one time domain resource unit; or when the number of antenna ports for SRS transmission on the SRS resource is greater than or equal to a second predetermined value, the determined resource utilization method is not to switch the transmitting antenna in the at least one time domain resource unit.

[0025] In combination with the first aspect or any one of the above possible implementations, in another possible implementation of the first aspect, when the value of the SRS frequency hopping configuration of the SRS resource is a first value, the determined resource utilization method is to perform resource frequency hopping of frequency domain resources in the at least one time domain resource unit; or

[0026] When the value of the SRS frequency hopping configuration of the SRS resource is not the first value, the resource utilization mode determined is:

[0027] Switching a transmitting antenna in the at least one time domain resource unit; or,

[0028] Switching the transmit beam in the at least one time domain resource unit; or,

[0029] The same beam and the same frequency domain resources are used for transmission in the at least one time domain resource unit.

[0030] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, after the terminal device performs SRS transmission on the at least one time domain resource unit, the method further includes:

[0031] The terminal device receives a target time domain resource unit among the at least one time domain resource unit indicated by the network device.

[0032] In combination with the first aspect or any one of the foregoing possible implementations, in another possible implementation of the first aspect, the time domain resource unit is an OFDM symbol, a time slot, a mini time slot, or a subframe.

[0033] In a second aspect, a wireless communication method is provided, including: a network device determines at least one time domain resource unit for SRS reception on a sounding reference signal SRS resource; the network device determines a resource utilization method used by the terminal device to transmit the SRS in the at least one time domain resource unit; and according to the determined resource utilization method, the network device receives the SRS transmitted by the terminal device on the at least one time domain resource unit.

[0034] In combination with the second aspect, in a possible implementation method of the second aspect, the resource utilization method is a method in which the terminal device utilizes frequency domain resources, transmitting antennas and / or transmitting beams when performing SRS transmission on the at least one time domain resource unit.

[0035] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the method of utilizing frequency domain resources, antennas, and / or transmit beams includes:

[0036] A switching method of at least one of frequency domain resources, transmitting antennas and transmitting beams in the at least one time domain resource unit.

[0037] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the manner of using frequency domain resources, antennas, and / or transmit beams indicates:

[0038] Whether at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is switched on the at least one time domain resource unit.

[0039] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the resource utilization method includes:

[0040] Perform resource hopping of frequency domain resources in the at least one time domain resource unit; or,

[0041] Switching a transmitting antenna in the at least one time domain resource unit; or,

[0042] Switching the transmit beam in the at least one time domain resource unit; or,

[0043] The same beam and the same frequency domain resources are used for transmission in the at least one time domain resource unit.

[0044] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, switching a transmitting antenna in the at least one time domain resource unit includes:

[0045] Switching the transmitting antennas within the same antenna array block in the at least one time domain resource unit; or

[0046] Switching between different antenna array blocks is performed in the at least one time domain resource unit.

[0047] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the network device determines, by the terminal device, a resource utilization mode used to transmit the SRS in the at least one time domain resource unit, including:

[0048] According to the parameter configuration of the SRS resource, the network device determines the resource utilization mode.

[0049] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the parameter configuration of the SRS resource includes configuration, by the network device, of a resource utilization manner for transmitting the SRS on the at least one time domain resource unit;

[0050] According to the parameter configuration of the SRS resource, the network device determines the resource utilization mode, including:

[0051] According to the configuration of the network device on the resource utilization mode for transmitting the SRS on the at least one time domain resource unit, the network device determines the resource utilization mode.

[0052] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, according to the parameter configuration of the SRS resource, the network device determines the resource utilization mode, including:

[0053] The network device determines the resource utilization mode according to configuration of at least one of the following:

[0054] The transmission bandwidth of the SRS resource;

[0055] the number of antenna ports for performing SRS transmission on the SRS resource;

[0056] the number of the at least one time domain resource unit occupied by the SRS resource;

[0057] a continuous manner of transmitting the SRS on the SRS resource;

[0058] SRS frequency hopping configuration of the SRS resource;

[0059] The subcarrier spacing occupied by transmitting the SRS on the SRS resource;

[0060] The SRS type of the SRS resource.

[0061] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the continuous manner of transmitting the SRS on the SRS resource includes:

[0062] Periodic transmission mode, quasi-continuous transmission mode or non-periodic transmission mode.

[0063] In combination with the second aspect or any of the foregoing possible implementations, in another possible implementation of the second aspect, the SRS type of the SRS resource is:

[0064] SRS for channel state information (CSI) measurement; or

[0065] SRS for beam management.

[0066] In combination with the second aspect or any one of the above possible implementations, in another possible implementation of the second aspect, when the number of antenna ports for SRS transmission on the SRS resource is less than a first predetermined value, the determined resource utilization method is to switch the transmitting antenna in the at least one time domain resource unit; or

[0067] When the number of antenna ports for SRS transmission on the SRS resource is greater than or equal to a second predetermined value, the resource utilization mode determined is not to switch the transmitting antenna in the at least one time domain resource unit.

[0068] In combination with the second aspect or any one of the above possible implementations, in another possible implementation of the second aspect, when the value of the SRS frequency hopping configuration of the SRS resource is a first value, the determined resource utilization method is to perform resource frequency hopping of frequency domain resources in the at least one time domain resource unit; or

[0069] When the value of the SRS frequency hopping configuration of the SRS resource is not the first value, the resource utilization mode determined is:

[0070] Switching a transmitting antenna in the at least one time domain resource unit; or,

[0071] Switching the transmit beam in the at least one time domain resource unit; or,

[0072] The same beam and the same frequency domain resources are used for transmission in the at least one time domain resource unit.

[0073] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, after the network device receives the SRS transmitted by the terminal device on the at least one time domain resource unit, the method further includes:

[0074] According to the reception result of the SRS, the network device indicates a target time domain resource unit in the at least one time domain resource unit to the terminal device.

[0075] In combination with the second aspect or any one of the foregoing possible implementations, in another possible implementation of the second aspect, the time domain resource unit is an OFDM symbol, a time slot, a mini time slot, or a subframe.

[0076] In a third aspect, a terminal device is provided, which is used to execute the method in the first aspect or any possible implementation of the first aspect. Specifically, the terminal device includes a functional module for executing the method in the first aspect or any possible implementation of the first aspect.

[0077] In a fourth aspect, a network device is provided, which is used to execute the method in the second aspect or any possible implementation of the second aspect. Specifically, the network device includes a functional module for executing the method in the second aspect or any possible implementation of the second aspect.

[0078] In a fifth aspect, a terminal device is provided, comprising a processor, a memory, and a transceiver. The processor, the memory, and the transceiver communicate with each other through an internal connection path to transmit control and / or data signals, so that the terminal device executes the method in the first aspect or any possible implementation of the first aspect.

[0079] In a sixth aspect, a network device is provided, comprising a processor, a memory, and a transceiver. The processor, the memory, and the transceiver communicate with each other through an internal connection path to transmit control and / or data signals, so that the network device executes the method in the second aspect or any possible implementation of the second aspect.

[0080] In a seventh aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program includes instructions for executing any one of the above methods or any possible implementations.

[0081] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute any one of the above methods or any possible implementation methods.

[0082] Therefore, in an embodiment of the present application, the terminal device determines at least one time domain resource unit occupied by SRS transmission on the SRS resource; the terminal device determines the resource utilization method used to transmit the SRS on at least one time domain resource unit; according to the determined resource utilization method, the terminal device performs SRS transmission on at least one time domain resource unit, whereby the terminal device can flexibly select the resource utilization method used to transmit the SRS on the time domain resource unit, thereby realizing the function of the time domain resource unit as needed, and thus can realize reasonable SRS sending to improve communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0084] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.

[0085] Figure 2 It is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

[0086] Figure 3 It is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

[0087] Figure 4 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0088] Figure 5 It is a schematic block diagram of a network device according to an embodiment of the present application.

[0089] Figure 6 is a schematic block diagram of a system chip according to an embodiment of the present application.

[0090] Figure 7 It is a schematic block diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0091] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0092] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS) system, Worldwide Interoperability for Microwave Access (WiMAX) system or future 5G system (also referred to as New Radio (NR) system).

[0093] Figure 1A wireless communication system 100 applied in an embodiment of the present application is shown. The wireless communication system 100 may include a network device 110. The network device 100 may be a device that communicates with a terminal device. The network device 100 may provide communication coverage for a specific geographical area, and may communicate with a terminal device (e.g., UE) located in the coverage area. Optionally, the network device 100 may be a base station (Base Transceiver Statiton, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (EvolutionalNode B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0094] The wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. The terminal device 120 may be mobile or fixed. Optionally, the terminal device 120 may refer to an access terminal, a user equipment (UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN, etc.

[0095] Optionally, terminal devices 120 may perform device-to-device (D2D) communication with each other.

[0096] Optionally, the 5G system or network may also be referred to as a New Radio (NR) system or network.

[0097] Figure 1One network device and two terminal devices are shown exemplarily. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0098] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0099] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0100] Figure 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application. The method 200 may optionally be applied to Figure 1 The system shown is not limited thereto. The method 200 includes at least part of the following.

[0101] In 210, the terminal device determines at least one time domain resource unit occupied by SRS transmission on the SRS resource.

[0102] Optionally, in an embodiment of the present application, an SRS resource is a resource that can be used to transmit an SRS. The at least one time domain resource unit for SRS transmission may belong to one SRS resource. Among them, the one SRS resource is any one of the multiple SRS resources that can be used for SRS transmission. Compared with other SRS resources, at least one parameter configuration of each SRS resource in the multiple SRS resources is independent, and the at least one parameter configuration includes at least one of the following: the time domain resources occupied by sending SRS; the frequency domain resources occupied by sending SRS; the SRS sequence used to send SRS; the number of times SRS is sent after receiving the trigger signaling sent by the network device, etc. The network side can use independent signaling to allocate configuration parameters for each SRS resource.

[0103] Optionally, the time domain resource unit mentioned in the embodiment of the present application may be an orthogonal frequency division multiplexing (OFDM) symbol, a time slot, a mini time slot or a subframe.

[0104] Optionally, when the time domain resource unit is an OFDM symbol, the length of the OFDM symbol can be determined according to the subcarrier spacing used to send SRS on the SRS resource, or according to the subcarrier spacing that determines the time slot length of the time slot where the OFDM symbol is located, or according to the subcarrier spacing for transmitting data in the time slot where the OFDM symbol is located.

[0105] Optionally, when the terminal device determines that there are multiple time domain resource units, the multiple time domain resource units are continuous time domain resource units.

[0106] Optionally, when the time domain resource unit is an OFDM symbol, the at least one time domain resource unit determined by the terminal device may be the last at least one OFDM symbol of the time slot.

[0107] Optionally, the terminal device may determine the at least one time domain resource unit according to the configuration of the network device.

[0108] For example, the network device may configure the last few OFDM symbols in a time slot for transmission of the SRS, and the terminal device may determine the last few OFDM symbols to transmit the SRS according to the configuration of the network device.

[0109] Optionally, the terminal device may determine the at least one time domain resource unit according to current communication requirements.

[0110] For example, if the SRS is currently sent for transmission beam management, then the same number of time domain resource units as the number of transmission beams may be selected.

[0111] For example, if the SRS is currently sent to obtain uplink channel information of multiple antennas, then the same number of time domain resource units as the number of transmitting antennas may be selected.

[0112] In 220, the terminal device determines a resource utilization method used for transmitting the SRS on at least one time domain resource unit.

[0113] Optionally, the resource utilization method used to transmit SRS may be a method of utilizing non-time domain resources. For example, the resource utilization method may be a method of utilizing frequency domain resources, transmitting antennas and / or transmitting beams when the terminal device transmits SRS on at least one time domain resource unit.

[0114] It should be understood that the resource utilization method may also be a method of utilizing other resources besides frequency domain resources, transmitting antennas and transmitting beams, for example, it may be a method of utilizing code domain resources, and the embodiments of the present application do not specifically limit this.

[0115] Optionally, the manner of utilizing frequency domain resources, antennas and / or transmission beams includes:

[0116] A switching method of at least one of a frequency domain resource, a transmit antenna, and a transmit beam in at least one time domain resource unit.

[0117] Specifically, the switching method may indicate the object that needs to be switched in at least one of the frequency domain resources, the transmitting antenna and the transmitting beam, and / or how the switched object is switched in the at least one time domain resource unit.

[0118] Among them, when the determined time domain resource unit is one, the switching method can indicate the object that needs to be switched in at least one of the frequency domain resources, transmitting antenna and transmitting beam, and / or how the switched object is switched between multiple finer-grained resources within the one time domain resource unit.

[0119] For example, the time domain resource unit is a subframe, and the switching method may indicate how at least one of the frequency domain resources, the transmitting antenna, and the transmitting beam is switched between multiple time slots in the subframe.

[0120] Alternatively, when there are multiple determined time domain resource units, the switching method can represent: the object that needs to be switched in at least one of the frequency domain resources, transmitting antennas and transmitting beams, and / or how the switched object is switched between the multiple time domain resource units, and / or how to switch between multiple finer-grained resources within a time domain resource unit.

[0121] For example, the multiple time domain resource units are multiple subframes, and the switching method can indicate a method of switching frequency domain resources, transmitting antennas and / or transmitting beams between multiple time slots within a subframe, or indicate a method of switching frequency domain resources, transmitting antennas and / or transmitting beams between multiple subframes.

[0122] Among them, at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is switched in at least one time domain resource unit, which means that at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is not always the same in the at least one time domain resource unit.

[0123] Specifically, when the time domain resource unit determined by the terminal device includes a time domain resource unit, at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is different between at least some of the time domain resources in a plurality of finer-grained time domain resources within the time domain resource unit.

[0124] For example, the one time domain resource unit is a subframe, and at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is different between at least some of the time domain resources in multiple time slots in the subframe.

[0125] Alternatively, when the time domain resource unit determined by the terminal device includes multiple time domain resource units, at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is not always the same between multiple finer-grained time domain resources of a certain time domain resource unit (that is, it is different between at least some of the multiple time domain resources), or at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is not always the same between the multiple time domain resource units (that is, it is different between at least some of the multiple time domain resource units).

[0126] For example, if the multiple time domain resource units are multiple subframes, at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is not always the same between the multiple subframes, or at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is not always the same between multiple time slots of a subframe in the multiple subframes.

[0127] Optionally, the indication is made by using frequency domain resources, antennas and / or transmission beams:

[0128] Whether at least one of the frequency domain resources, the transmitting antenna and the transmitting beam is switched on at least one time domain resource unit.

[0129] For example, this method indicates whether the frequency domain resources, the transmission antenna and the transmission beam are switched on at least one time domain resource unit.

[0130] Optionally, in an embodiment of the present application, the resource utilization method determined by the terminal device includes method 1), method 2), method 3) or method 4).

[0131] Among them, method 1) is: performing resource hopping of frequency domain resources in at least one time domain resource unit.

[0132] For example, the terminal device can use different frequency domain resources to transmit SRS on different time domain resource units, and use an agreed frequency domain hopping pattern between the frequency domain resources used to transmit SRS on different time domain resource units. For example, the hopping pattern is determined based on the number of time domain resource units and / or the configuration on the network side.

[0133] Mode 2) is: switching the transmitting antenna in at least one time domain resource unit.

[0134] Among them, the switching of the transmitting antenna in at least one time domain resource unit in method 2) includes: method 2-1) and method 2-2).

[0135] Mode 2-1) is: switching the transmitting antennas within the same antenna array block in at least one time domain resource unit; or,

[0136] For example, the terminal device uses different physical antennas in the same antenna array to transmit SRS in different time domain resource units. The index of the physical antenna used to transmit SRS on different time domain resource units can be obtained according to the agreed formula, and antenna polling is generally used. For example, the physical antenna currently used to transmit SRS is determined according to the index of the time domain resource unit. In implementation, due to the limitation of the terminal radio frequency, the number of uplink radio frequencies may be less than the number of physical antennas. In order for the network device to obtain the channel corresponding to each physical antenna, the terminal device can send SRS on each physical antenna in turn.

[0137] Method 2-2) is: switching between different antenna array blocks in at least one time domain resource unit.

[0138] For example, the terminal device uses different antenna array blocks to transmit SRS in different time domain resource units. The antenna array blocks that transmit SRS on different time domain resource units can be determined by the terminal device itself or configured by the network side. After the network device receives the SRS sent on multiple time domain resource units, it can notify the terminal device of the index of the time domain resource unit where the SRS signal with the best reception quality is located, so that the terminal device can subsequently use the corresponding antenna array block to transmit other signals. In specific implementation, the terminal device uses different antenna array blocks to send SRS signals, which can be reflected in the terminal device assuming that the SRS transmitted on different time domain resource units are not quasi-co-located at least in terms of spatial parameters.

[0139] It should be understood that in addition to method 2-1) and method 2-2), method 2) may also include other methods, for example, the antenna array for sending SRS on at least one time domain resource unit may include multiple antenna arrays, and there is at least one antenna array among the multiple antenna arrays including multiple antennas for transmitting SRS on the at least one time domain resource unit, wherein when sending SRS, each antenna occupies different time domain resources compared with other antennas.

[0140] Method 3) is: switching the transmission beam in at least one time domain resource unit.

[0141] For example, the terminal device uses different beams to transmit SRS in different time domain resource units. The beams for transmitting SRS on different time domain resource units can be determined by the terminal device itself or configured by the network side. After the network side receives SRS sent using different beams on multiple time domain resource units, it can notify the terminal device of the index of the time domain resource unit where the SRS signal with the best reception quality is located, so that the terminal device can subsequently use the corresponding beam to transmit other signals. In specific implementation, the terminal device uses different beams to send SRS signals, which can be reflected in the terminal device or the network assuming that the SRS transmitted on different time domain resource units are not quasi-co-location (QCL) in terms of spatial parameters.

[0142] Mode 4) is: using the same beam and the same frequency domain resources for transmission in at least one time domain resource unit.

[0143] For example, the terminal device uses the same beam and frequency domain resources to transmit SRS in the multiple time domain resource units, and the network device can use different receiving beams to receive SRS in multiple time domain resource units, thereby determining the best receiving beam. In specific implementation, the terminal uses the same beam to send the SRS signal, which can be reflected in the terminal or base station assuming that the SRS transmitted on different time domain resource units are quasi-co-located in terms of spatial parameters.

[0144] Optionally, in the embodiment of the present application, the terminal device can select a resource utilization mode to be adopted from a plurality of resource utilization modes, for example, one mode is selected from mode 1), mode 2-1), mode 2-2), mode 3), mode 4).

[0145] Optionally, in an embodiment of the present application, the terminal device may determine a resource utilization method based on parameter configuration of the SRS resources.

[0146] In one implementation, the parameter configuration of the SRS resource includes the configuration of the network device for the resource utilization method for transmitting the SRS on at least one time domain resource unit; based on the configuration of the network device for the resource utilization method for transmitting the SRS on at least one time domain resource unit, the terminal device determines the resource utilization method.

[0147] Specifically, the configuration information of the resource utilization mode can be indicated to the terminal device together with other parameter configurations of the SRS resource, for example, through high-layer signaling. In addition, if the SRS resource is used for non-periodic SRS transmission, the configuration information of the resource utilization mode can be indicated to the terminal device through downlink control information (Downlink Control Information, DCI) together with the trigger signaling of the non-periodic SRS.

[0148] In one implementation, the terminal device determines the resource utilization mode according to configuration of at least one of the following:

[0149] The transmission bandwidth of the SRS resource;

[0150] The number of antenna ports for SRS transmission on the SRS resource;

[0151] The number of at least one time domain resource unit occupied by the SRS resource;

[0152] A continuous mode of transmitting SRS on SRS resources;

[0153] SRS frequency hopping configuration of SRS resources;

[0154] The subcarrier spacing occupied by transmitting SRS on the SRS resource;

[0155] The SRS type of the SRS resource.

[0156] Optionally, the continuous mode of transmitting the SRS on the SRS resource includes: a periodic transmission mode, a quasi-continuous transmission mode or a non-periodic transmission mode.

[0157] Specifically, quasi-persistent transmission is SRS transmission activated by activation signaling and can be stopped by deactivation signaling, and aperiodic transmission is SRS transmission of a limited number of times triggered by DCI and does not require deactivation signaling to stop.

[0158] Optionally, the SRS type of the SRS resource is: SRS for channel state information CSI measurement; or SRS for beam management.

[0159] Optionally, the SRS type may be differentiated according to the purpose of the transmitted SRS. For example, two SRS types may be defined, one for uplink CSI measurement and the other for uplink transmit / receive beam management.

[0160] It should be understood that, in addition to distinguishing SRS types according to the purpose of the SRS, SRS types may also be distinguished according to other factors, which is not specifically limited in the embodiments of the present application.

[0161] In order to more clearly understand the present application, several specific implementation methods for determining resource utilization methods will be introduced below. It should be understood that the following are merely specific implementation methods of the present application and should not constitute a special limitation on the present application.

[0162] In one implementation, when the number of antenna ports for SRS transmission on SRS resources is less than a first predetermined value, the determined resource utilization method is to switch the transmitting antenna in at least one time domain resource unit; or, when the number of antenna ports for SRS transmission on SRS resources is greater than or equal to a second predetermined value, the determined resource utilization method is not to switch the transmitting antenna in at least one time domain resource unit.

[0163] In one implementation, when the value of the SRS frequency hopping configuration of the SRS resource is a first value, the determined resource utilization mode is to perform resource frequency hopping of frequency domain resources in at least one time domain resource unit; or, when the value of the SRS frequency hopping configuration of the SRS resource is not the first value, the determined resource utilization mode is:

[0164] Switching the transmitting antenna in at least one time domain resource unit; or,

[0165] Switching the transmit beam in at least one time domain resource unit; or,

[0166] The same beam and the same frequency domain resources are used for transmission in at least one time domain resource unit.

[0167] The first value may be 1 or 0.

[0168] In one implementation, the terminal device determines the resource utilization method according to the transmission bandwidth of the SRS resource.

[0169] For example, if the transmission bandwidth of the SRS resources for the user is greater than or equal to a certain value (for example, the entire transmission bandwidth of the user), the determined resource utilization method indicates that resource hopping of frequency domain resources is not performed in at least one time domain resource unit; if the transmission bandwidth of the SRS resources is less than a certain value, the determined resource utilization method indicates that resource hopping of frequency domain resources is performed in at least one time domain resource unit.

[0170] In one implementation, the terminal determines the resource utilization mode according to the continuity mode of the SRS on the SRS resource.

[0171] For example, when the terminal device performs periodic transmission or quasi-continuous transmission of SRS, it can be determined to switch the transmission beam in at least one time domain resource unit, use the same beam and the same frequency domain resources for transmission in at least one time domain resource unit, or switch between different antenna array blocks in at least one time domain resource unit; when the terminal device performs non-periodic SRS transmission, it can be determined to perform resource hopping of frequency domain resources in at least one time domain resource unit.

[0172] In one implementation, the terminal device may determine the resource utilization method according to the subcarrier spacing used for transmitting the SRS on the SRS resource.

[0173] For example, if the subcarrier spacing is equal to the subcarrier spacing for determining the time slot length of the time slot where the time domain resource unit is located, or is equal to the subcarrier spacing for transmitting data in the time slot where the time domain resource unit is located, resource hopping of frequency domain resources can be performed in at least one time domain resource unit, or switching of transmitting antennas within the same antenna array block can be performed in at least one time domain resource unit;

[0174] For example, if the subcarrier spacing is larger than the subcarrier spacing that determines the time slot length of the time slot where the time domain resource unit is located, or the subcarrier spacing for transmitting data in the time slot where the time domain resource unit is located, then switching between different antenna array blocks can be performed in at least one time domain resource unit, switching of transmitting beams can be performed in at least one time domain resource unit, or transmission using the same beam and the same frequency domain resources in at least one time domain resource unit.

[0175] In one implementation, when the terminal determines the transmission mode according to the SRS type of the SRS resource, if the SRS type is an SRS for obtaining CSI, resource hopping of frequency domain resources can be performed in at least one time domain resource unit, or switching of transmitting antennas within the same antenna array block can be performed in at least one time domain resource unit; if the SRS type is an SRS for beam management, switching between different antenna array blocks can be performed in at least one time domain resource unit, switching of transmitting beams can be performed in at least one time domain resource unit, or the same beam and the same frequency domain resources can be used for transmission in at least one time domain resource unit.

[0176] In 230, according to the determined resource utilization mode, the terminal device performs SRS transmission on at least one time domain resource unit.

[0177] Optionally, in an embodiment of the present application, after the terminal device performs SRS transmission on at least one time domain resource unit, the terminal device receives a target time domain resource unit in the at least one time domain resource unit indicated by the network device.

[0178] Specifically, the network device can select a target time domain resource unit (for example, a time domain resource unit carrying the SRS with the best signal quality) from the at least one time domain resource unit according to the reception result of the SRS, and indicate the target time domain resource unit to the terminal device, and the terminal device can send subsequent downlink signals according to the instruction of the network device. The terminal device can specifically send subsequent downlink signals according to the transmission method of sending the SRS on the target time domain resource unit.

[0179] For example, the terminal device may use the transmission beam, transmission power or transmission antenna, etc., used when sending the SRS on the target time domain resource unit to send subsequent downlink signals to the network device.

[0180] Therefore, in an embodiment of the present application, the terminal device determines at least one time domain resource unit occupied by SRS transmission on the SRS resource; the terminal device determines the resource utilization method used to transmit the SRS on at least one time domain resource unit; according to the determined resource utilization method, the terminal device performs SRS transmission on at least one time domain resource unit, thereby enabling the terminal device to flexibly select the resource utilization method used to transmit the SRS on the time domain resource unit, thereby realizing the function of the time domain resource unit as needed.

[0181] Figure 3 3 is a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application. The method 300 includes at least part of the following contents.

[0182] In 310, the network device determines at least one time domain resource unit for performing SRS reception on a sounding reference signal SRS resource.

[0183] Optionally, the time domain resource unit is an OFDM symbol, a time slot, a mini-time slot or a subframe.

[0184] In 320, the network device determines a resource utilization mode used by the terminal device to transmit the SRS in at least one time domain resource unit.

[0185] Optionally, the resource utilization method is a method of utilizing frequency domain resources, transmitting antennas and / or transmitting beams when the terminal device transmits SRS on at least one time domain resource unit.

[0186] Optionally, the method of utilizing frequency domain resources, antennas and / or transmission beams includes: a method of switching at least one of frequency domain resources, transmission antennas and transmission beams in at least one time domain resource unit.

[0187] Optionally, frequency domain resources, antennas and / or transmit beams are used to indicate whether at least one of the frequency domain resources, transmit antennas and transmit beams is switched on at least one time domain resource unit.

[0188] Optionally, resource utilization methods include:

[0189] Perform resource hopping of frequency domain resources in at least one time domain resource unit; or,

[0190] Switching the transmitting antenna in at least one time domain resource unit; or,

[0191] Switching the transmit beam in at least one time domain resource unit; or,

[0192] The same beam and the same frequency domain resources are used for transmission in at least one time domain resource unit.

[0193] Optionally, switching a transmitting antenna in at least one time domain resource unit includes:

[0194] Switching transmit antennas within the same antenna array block in at least one time domain resource unit; or

[0195] Switching between different antenna array blocks is performed in at least one time domain resource unit.

[0196] Optionally, according to parameter configuration of the SRS resource, the network device determines a resource utilization mode.

[0197] In one implementation, the parameter configuration of the SRS resource includes the configuration of the network device for resource utilization mode for transmitting the SRS on at least one time domain resource unit; based on the configuration of the network device for resource utilization mode for transmitting the SRS on at least one time domain resource unit, the network device determines the resource utilization mode.

[0198] In one implementation, the network device determines a resource utilization mode based on configuration of at least one of the following:

[0199] The transmission bandwidth of the SRS resource;

[0200] The number of antenna ports for SRS transmission on the SRS resource;

[0201] The number of at least one time domain resource unit occupied by the SRS resource;

[0202] A continuous mode of transmitting SRS on SRS resources;

[0203] SRS frequency hopping configuration of SRS resources;

[0204] The subcarrier spacing occupied by transmitting SRS on the SRS resource;

[0205] The SRS type of the SRS resource.

[0206] Optionally, the continuous mode of transmitting the SRS on the SRS resource includes: a periodic transmission mode, a quasi-continuous transmission mode or a non-periodic transmission mode.

[0207] Optionally, the SRS type of the SRS resource is: SRS for channel state information CSI measurement; or SRS for beam management.

[0208] Optionally, when the number of antenna ports for SRS transmission on the SRS resource is less than a first predetermined value, the determined resource utilization method is to switch the transmitting antenna in at least one time domain resource unit; or when the number of antenna ports for SRS transmission on the SRS resource is greater than or equal to a second predetermined value, the determined resource utilization method is not to switch the transmitting antenna in at least one time domain resource unit.

[0209] Optionally, when the value of the SRS frequency hopping configuration of the SRS resource is a first value, the determined resource utilization mode is to perform resource frequency hopping of frequency domain resources in at least one time domain resource unit; or

[0210] When the value of the SRS frequency hopping configuration of the SRS resource is not the first value, the determined resource utilization mode is:

[0211] Switching the transmitting antenna in at least one time domain resource unit; or,

[0212] Switching the transmit beam in at least one time domain resource unit; or,

[0213] The same beam and the same frequency domain resources are used for transmission in at least one time domain resource unit.

[0214] In 330, according to the determined resource utilization mode, the network device receives the SRS transmitted by the terminal device on at least one time domain resource unit.

[0215] Optionally, in an embodiment of the present application, after the network device receives the SRS transmitted by the terminal device on the at least one time domain resource unit, the network device indicates to the terminal device the target time domain resource unit in the at least one time domain resource unit based on the reception result of the SRS.

[0216] It should be understood that Figure 3 The specific implementation method of the method 300 shown can refer to the implementation method of the method 200. For example, the implementation method of the network device determining the resource utilization method can refer to the implementation method of the terminal device determining the resource utilization method. For the sake of brevity, it will not be repeated here.

[0217] Figure 4 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Figure 4 As shown, the terminal device 400 may include a processing unit 410 and a communication unit 420 .

[0218] The processing unit 410 is used to: determine at least one time domain resource unit occupied by SRS transmission on a sounding reference signal SRS resource; determine a resource utilization method used for transmitting the SRS on the at least one time domain resource unit;

[0219] The communication unit 420 is configured to: perform SRS transmission on the at least one time domain resource unit according to the resource utilization mode determined by the processing unit.

[0220] It should be understood that the terminal device 400 can correspond to the terminal device in the method 200 and can implement the corresponding operations implemented by the terminal device in the method 200. For the sake of brevity, it will not be repeated here.

[0221] Figure 5 is a schematic block diagram of a network device 500 according to an embodiment of the present application. Figure 5 As shown, the network device 500 may include a processing unit 510 and a communication unit 520 .

[0222] The processing unit 510 is used to: determine at least one time domain resource unit for SRS reception on a sounding reference signal SRS resource; determine a resource utilization method used by the terminal device to transmit the SRS in the at least one time domain resource unit;

[0223] The communication unit 520 is used to: receive the SRS transmitted by the terminal device on the at least one time domain resource unit according to the resource utilization mode determined by the processing unit 510.

[0224] It should be understood that the network device 500 may correspond to the network device in the method 300 and may implement the corresponding operations implemented by the network device in the method 300 . For the sake of brevity, details will not be given here.

[0225] Figure 6 It is a schematic structural diagram of the system chip 600 according to an embodiment of the present application. Figure 6 The system chip 600 includes an input interface 601 , an output interface 602 , and the processor 603 and the memory 604 can be connected via an internal communication connection line. The processor 603 is used to execute the code in the memory 604 .

[0226] Optionally, when the code is executed, the processor 603 implements the method executed by the network device in the method embodiment. For the sake of brevity, it will not be described in detail here.

[0227] Optionally, when the code is executed, the processor 603 implements the method executed by the terminal device in the method embodiment. For the sake of brevity, it will not be described in detail here.

[0228] Figure 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application. Figure 7As shown, the communication device 700 includes a processor 710 and a memory 720. The memory 720 may store program codes, and the processor 710 may execute the program codes stored in the memory 720.

[0229] Alternatively, if Figure 7 As shown, the communication device 700 may include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate externally.

[0230] Optionally, the processor 710 may call program codes stored in the memory 720 to execute corresponding operations of the network device in the method embodiment, which will not be described in detail here for the sake of brevity.

[0231] Optionally, the processor 710 may call program codes stored in the memory 720 to execute corresponding operations of the terminal device in the method embodiment, which will not be described in detail here for the sake of brevity.

[0232] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0233] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0234] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0235] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0236] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0237] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0238] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0239] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0240] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device determines at least one time domain resource unit occupied by performing SRS transmission on a sounding reference signal SRS resource; The terminal device determines a resource utilization mode used for transmitting the SRS on the at least one time domain resource unit; According to the determined resource utilization mode, the terminal device performs SRS transmission on the at least one time domain resource unit; The resource utilization methods include: Using the same beam and the same frequency domain resource for transmission in the at least one time domain resource unit; The terminal device adopting the same beam to transmit the SRS means that the SRS transmitted by the terminal device on different time domain resource units are quasi-co-located in terms of spatial parameters.

2. The method according to claim 1, characterized in that: The terminal device determines a resource utilization mode used for transmitting the SRS in the at least one time domain resource unit, including: According to the parameter configuration of the SRS resource, the terminal device determines the resource utilization method.

3. The method according to claim 2, characterized in that The parameter configuration of the SRS resource includes configuration of a resource utilization mode for transmitting the SRS on the at least one time domain resource unit by the network device; According to the parameter configuration of the SRS resource, the terminal device determines the resource utilization mode, including: According to the configuration of the network device on the resource utilization mode for transmitting the SRS on the at least one time domain resource unit, the terminal device determines the resource utilization mode.

4. The method according to claim 2, characterized in that: According to the parameter configuration of the SRS resource, the terminal device determines the resource utilization mode, including: The terminal device determines the resource utilization mode according to at least one of the following configurations: The transmission bandwidth of the SRS resource; the number of antenna ports for performing SRS transmission on the SRS resource; the number of the at least one time domain resource unit occupied by the SRS resource; a continuous manner of transmitting the SRS on the SRS resource; The subcarrier spacing occupied by transmitting the SRS on the SRS resource; The SRS type of the SRS resource.

5. The method according to claim 4, characterized in that The continuous mode of transmitting the SRS on the SRS resource includes: Periodic transmission mode, quasi-continuous transmission mode or non-periodic transmission mode.

6. The method according to claim 4, characterized in that The SRS type of the SRS resource is: SRS for channel state information (CSI) measurement; or SRS for beam management.

7. The method according to claim 4, characterized in that When the number of antenna ports for SRS transmission on the SRS resource is less than a first predetermined value, the resource utilization mode determined is to switch the transmitting antenna in the at least one time domain resource unit; or When the number of antenna ports for SRS transmission on the SRS resource is greater than or equal to a second predetermined value, the resource utilization mode determined is not to switch the transmitting antenna in the at least one time domain resource unit.

8. The method according to claim 3, characterized in that After the terminal device performs SRS transmission on the at least one time domain resource unit, the method further includes: The terminal device receives a target time domain resource unit among the at least one time domain resource unit indicated by the network device.

9. The method according to any one of claims 1 to 8, characterized in that The time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol, a time slot, a mini time slot or a subframe.

10. A wireless communication method, characterized in that: include: The network device determines at least one time domain resource unit for performing SRS reception on a sounding reference signal SRS resource; The network device determines a resource utilization mode used by the terminal device to transmit the SRS in the at least one time domain resource unit; According to the determined resource utilization mode, the network device receives the SRS transmitted by the terminal device on the at least one time domain resource unit; The resource utilization methods include: Using the same beam and the same frequency domain resource for transmission in the at least one time domain resource unit; The network device adopting the same beam to receive the SRS means that the SRS transmitted by the network device on different time domain resource units are quasi-co-located in terms of spatial parameters.

11. The method according to claim 10, characterized in that The network device determines a resource utilization mode used by the terminal device to transmit the SRS in the at least one time domain resource unit, including: According to the parameter configuration of the SRS resource, the network device determines the resource utilization mode.

12. The method according to claim 11, characterized in that The parameter configuration of the SRS resource includes configuration of a resource utilization mode of the network device for transmitting the SRS on the at least one time domain resource unit; According to the parameter configuration of the SRS resource, the network device determines the resource utilization mode, including: According to the configuration of the network device on the resource utilization mode for transmitting the SRS on the at least one time domain resource unit, the network device determines the resource utilization mode.

13. The method according to claim 11, characterized in that According to the parameter configuration of the SRS resource, the network device determines the resource utilization mode, including: The network device determines the resource utilization mode according to configuration of at least one of the following: The transmission bandwidth of the SRS resource; the number of antenna ports for performing SRS transmission on the SRS resource; the number of the at least one time domain resource unit occupied by the SRS resource; a continuous manner of transmitting the SRS on the SRS resource; The subcarrier spacing occupied by transmitting the SRS on the SRS resource; The SRS type of the SRS resource.

14. The method according to claim 13, characterized in that The continuous mode of transmitting the SRS on the SRS resource includes: Periodic transmission mode, quasi-continuous transmission mode or non-periodic transmission mode.

15. The method according to any one of claims 10 to 14, characterized in that After the network device receives the SRS transmitted by the terminal device on the at least one time domain resource unit, the method further includes: According to the reception result of the SRS, the network device indicates a target time domain resource unit in the at least one time domain resource unit to the terminal device.

16. The method according to any one of claims 10 to 14, characterized in that The time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol, a time slot, a mini time slot or a subframe.

17. A terminal device, characterized in that: It includes a processing unit and a communication unit; wherein, The processing unit is used to: determine at least one time domain resource unit occupied by SRS transmission on a sounding reference signal SRS resource; determine a resource utilization method used to transmit the SRS on the at least one time domain resource unit; The communication unit is used to: perform SRS transmission on the at least one time domain resource unit according to the resource utilization mode determined by the processing unit; wherein the resource utilization mode includes: The same beam and the same frequency domain resources are used for transmission in at least one time domain resource unit; wherein the terminal device uses the same beam for SRS transmission means that the SRS transmitted by the terminal device on different time domain resource units are quasi-co-located in terms of spatial parameters.

18. The terminal device according to claim 17, characterized in that: The processing unit is further configured to: The resource utilization mode is determined according to the parameter configuration of the SRS resource.

19. The terminal device according to claim 18, characterized in that: The parameter configuration of the SRS resource includes configuration of a resource utilization mode for transmitting the SRS on the at least one time domain resource unit by the network device; The processing unit is further configured to: The resource utilization mode is determined according to the configuration of the network device on the resource utilization mode for transmitting the SRS on the at least one time domain resource unit.

20. The terminal device according to claim 18, characterized in that: The processing unit is further configured to: The resource utilization mode is determined according to configuration of at least one of the following: The transmission bandwidth of the SRS resource; the number of antenna ports for performing SRS transmission on the SRS resource; the number of the at least one time domain resource unit occupied by the SRS resource; a continuous manner of transmitting the SRS on the SRS resource; The subcarrier spacing occupied by transmitting the SRS on the SRS resource; The SRS type of the SRS resource.

21. The terminal device according to claim 20, characterized in that: The continuous mode of transmitting the SRS on the SRS resource includes: Periodic transmission mode, quasi-continuous transmission mode or non-periodic transmission mode.

22. The terminal device according to claim 20, characterized in that: The SRS type of the SRS resource is: SRS for channel state information (CSI) measurement; or SRS for beam management.

23. The terminal device according to claim 20, characterized in that: When the number of antenna ports for SRS transmission on the SRS resource is less than a first predetermined value, the resource utilization mode determined is to switch the transmitting antenna in the at least one time domain resource unit; or When the number of antenna ports for SRS transmission on the SRS resource is greater than or equal to a second predetermined value, the resource utilization mode determined is not to switch the transmitting antenna in the at least one time domain resource unit.

24. The terminal device according to claim 19, characterized in that: The communication unit is used for receiving a target time domain resource unit among the at least one time domain resource unit indicated by the network device.

25. The terminal device according to any one of claims 17 to 23, characterized in that: The time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol, a time slot, a mini time slot or a subframe.

26. A network device, characterized in that: It includes a processing unit and a communication unit; wherein, The processing unit is used to: determine at least one time domain resource unit for SRS reception on a sounding reference signal SRS resource; determine a resource utilization method used by a terminal device to transmit an SRS in the at least one time domain resource unit; The communication unit is used to: receive the SRS transmitted by the terminal device on the at least one time domain resource unit according to the resource utilization mode determined by the processing unit; wherein the resource utilization mode includes: The same beam and the same frequency domain resources are used for transmission in the at least one time domain resource unit; wherein the network device uses the same beam to receive SRS means that the SRS transmitted by the network device on different time domain resource units are quasi-co-located in terms of spatial parameters.

27. The network device according to claim 26, characterized in that: The processing unit is further configured to: The resource utilization mode is determined according to the parameter configuration of the SRS resource.

28. The network device according to claim 27, characterized in that: The parameter configuration of the SRS resource includes configuration of a resource utilization mode of the network device for transmitting the SRS on the at least one time domain resource unit; The processing unit is further configured to: The resource utilization mode is determined according to the configuration of the network device on the resource utilization mode for transmitting the SRS on the at least one time domain resource unit.

29. The network device according to claim 27, characterized in that: The processing unit is further configured to include: The resource utilization mode is determined according to configuration of at least one of the following: The transmission bandwidth of the SRS resource; the number of antenna ports for performing SRS transmission on the SRS resource; the number of the at least one time domain resource unit occupied by the SRS resource; a continuous manner of transmitting the SRS on the SRS resource; The subcarrier spacing occupied by transmitting the SRS on the SRS resource; The SRS type of the SRS resource.

30. The network device according to claim 29, characterized in that: The continuous mode of transmitting the SRS on the SRS resource includes: Periodic transmission mode, quasi-continuous transmission mode or non-periodic transmission mode.

31. The network device according to claim 29, characterized in that: The SRS type of the SRS resource is: SRS for channel state information (CSI) measurement; or SRS for beam management.

32. The network device according to any one of claims 26 to 31, characterized in that: The communication unit is further configured to: According to the reception result of the SRS, a target time domain resource unit in the at least one time domain resource unit is indicated to the terminal device.

33. The network device according to any one of claims 26 to 31, characterized in that: The time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol, a time slot, a mini time slot or a subframe.

34. A terminal device, comprising a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver communicate with each other through an internal connection path to transmit control and / or data signals, so that the terminal device executes the method according to any one of claims 1 to 9.

35. A network device, comprising a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver communicate with each other through an internal connection path to transmit control and / or data signals, so that the network device executes the method according to any one of claims 10 to 16.

36. A computer readable medium for storing a computer program comprising instructions for performing the method according to any one of claims 1 to 9.

37. A computer readable medium for storing a computer program comprising instructions for performing the method according to any one of claims 10 to 16.

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