Wireless communication method and apparatus

Abstract

The present application relates to the technical field of communications, and provides a wireless communication method and apparatus. The method comprises: a first terminal device selects a first SRS configuration from a plurality of SRS configurations, the first SRS configuration being determined on the basis of a first rule. In the embodiments of the present application, by means of a first rule, a plurality of terminal devices comprising a first terminal device can all select SRS configurations corresponding to the terminal devices, thereby facilitating the reduction of signal interference caused by the plurality of terminal devices selecting the same SRS configuration.

Description

Method and apparatus for wireless communication Technical Field

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

[0002] To reduce energy consumption and resource overhead for positioning services performed by certain devices (e.g., low-power, high-accurate positioning (LPHAP) devices), network devices broadcast multiple preconfigured sounding reference signal (SRS) configurations via system broadcasts. However, when multiple devices select SRS configurations based on the broadcast information, interference and conflicts may result.

[0003] Summary of the Invention

[0004] The present application provides a method and apparatus for wireless communication, which helps to reduce interference between signals.

[0005] In a first aspect, a method for wireless communication is provided, including: a first terminal device selects a first SRS configuration from multiple SRS configurations, where the first SRS configuration is determined according to a first rule.

[0006] In a second aspect, a method for wireless communication is provided, comprising: a network device sends multiple SRS configurations, the multiple SRS configurations are used for a first terminal device to select a first SRS configuration, and the first SRS configuration is determined according to a first rule.

[0007] According to a third aspect, a device for wireless communication is provided. The device is a first terminal device, and the device includes: a selection unit for selecting a first SRS configuration from multiple SRS configurations, where the first SRS configuration is determined according to a first rule.

[0008] In a fourth aspect, a device for wireless communication is provided, which is a network device, and includes: a sending unit for sending multiple SRS configurations, the multiple SRS configurations are used for a first terminal device to select a first SRS configuration, and the first SRS configuration is determined according to a first rule.

[0009] In a fifth aspect, a communication device is provided, comprising a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory to execute the method described in the first aspect or the second aspect.

[0010] In a sixth aspect, a device is provided, comprising a processor, configured to call a program from a memory to execute the method described in the first aspect or the second aspect.

[0011] In a seventh aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0012] In an eighth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method described in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program is provided, which enables a computer to execute the method described in the first aspect or the second aspect.

[0015] In the embodiment of the present application, the first terminal device selects the corresponding first SRS configuration from multiple SRS configurations based on the first rule. As can be seen, when multiple terminal devices select their corresponding SRS configurations according to the first rule, it is possible to reduce the situation where multiple terminal devices select the same SRS configuration, thereby helping to reduce SRS interference and conflicts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a wireless communication system used in an embodiment of the present application.

[0017] FIG2 is a flow chart of a method for wireless communication provided in an embodiment of the present application.

[0018] FIG3 is a flow chart of another method for wireless communication provided in an embodiment of the present application.

[0019] FIG4 is a flow chart of another method for wireless communication provided in an embodiment of the present application.

[0020] FIG5 is a flow chart of a possible implementation method provided in an embodiment of the present application.

[0021] FIG6 is a schematic structural diagram of a device for wireless communication provided in an embodiment of the present application.

[0022] FIG7 is a schematic structural diagram of another apparatus for wireless communication provided in an embodiment of the present application.

[0023] FIG8 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] 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, advanced long term evolution (LTE-A) system, new radio (NR) system, NR system evolution system, LTE-based access to unlicensed spectrum (LTE-U) system on unlicensed spectrum, NR-based access to unlicensed spectrum (NR-U) system on unlicensed spectrum, non-terrestrial network (NTN) system, universal mobile telecommunication system (UMTS), wireless local area network (WLAN), wireless fidelity (WiFi), and fifth-generation communication (5G) system. The technical solutions of the embodiments of the present application may also be applied to other communication systems, such as future communication systems, such as sixth-generation (6G) mobile communication systems or satellite communication systems.

[0026] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can not only support traditional cellular communications, but also support one or more other types of communications. For example, a communication system can support one or more of the following communications: device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, and vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to communication systems that support the above-mentioned communication methods.

[0027] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a stand-alone (SA) networking scenario.

[0028] The communication system in the embodiments of the present application can be applied to unlicensed spectrum. The unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in the embodiments of the present application can also be applied to licensed spectrum. The licensed spectrum can also be considered a dedicated spectrum.

[0029] The embodiments of the present application can be applied to NTN systems as well as terrestrial networks (TN) systems. By way of example and not limitation, NTN systems can include NR-based NTN systems and Internet of Things (IoT)-based NTN systems.

[0030] The communication system in the embodiments of the present application may include one or more terminal devices. A terminal device may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.

[0031] In an embodiment of the present application, the terminal device may be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system (such as an NR system), or a terminal device in a future-evolved public land mobile network (PLMN) network, etc.

[0032] In an embodiment of the present application, a terminal device may be a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device with wireless connection capabilities, an in-vehicle device, etc. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity that provides sidelink signals between terminal devices in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. Cellular phones and smart home devices communicate with each other without relaying the communication signal through a base station.

[0033] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, wearable or vehicle-mounted; it can also be deployed on the water, such as on a ship; it can also be deployed in the air, such as on an airplane, balloon, and satellite.

[0034] In addition to the terminal device, the communication system may also include one or more network devices. The network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may also be referred to as an access network device or a radio access network device. The network device may be, for example, a base station. The network device in the embodiment of the present application may refer to a radio access network (RAN) node (or device) that connects the terminal device to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip used to be set in the aforementioned device or apparatus. A base station may also be a mobile switching center and a device that performs base station functions in D2D, V2X, and M2M communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. A base station may support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by network devices.

[0035] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0036] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0037] By way of example and not limitation, in embodiments of the present application, a network device may be mobile, for example, a mobile device. In some embodiments of the present application, the network device may be a satellite or balloon station. In some embodiments of the present application, the network device may also be a base station located on land, water, or the like.

[0038] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0039] For example, Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. As shown in Figure 1, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or also referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located within the coverage area.

[0040] Figure 1 exemplarily shows a network device and two terminal devices. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0041] It should be understood that in the embodiments of the present application, a device having a communication function in the network / system may be referred to as a communication device. Taking the communication system 100 shown in Figure 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity (MME), an access and mobility management function (AMF), and other network entities, which are not limited in the embodiments of the present application.

[0042] For ease of understanding, some relevant technical knowledge involved in the embodiments of this application is first introduced. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least part of the following contents.

[0043] With the development of communication technology, reducing the energy consumption of terminal devices has become one of the major technological trends. For example, LPHAP is one of the key tasks in the expanded and improved NR positioning task of the 3rd Generation Partnership Project (3GPP) Release 18 (Rel-18). The main goal of LPHAP operation is to reduce the energy consumption of positioning services on the terminal side, thereby providing terminal devices with a battery life of more than 6 months in the radio resource control (RRC-inactive) state.

[0044] A device that supports LPHAP may be referred to as an LPHAP device. In some scenarios, an LPHAP device only requires positioning services, so it can be assumed that the LPHAP device will be in an RRC inactive state for a long time.

[0045] In order to meet the positioning requirements of LPHAP devices that are in RRC inactive state for a long time, one of the solutions determined by 3GPP is to introduce SRS configuration that is valid in multiple cells to support devices to perform uplink (UL) or downlink (DL) combined with UL positioning methods.

[0046] In some embodiments, the network device provides one or more SRS configurations for the terminal device for positioning, and the terminal device uses the SRS configuration in multiple cells. Since the SRS configuration is valid in multiple cells, even if the terminal device moves to another cell, it does not need to be reconfigured or updated.

[0047] According to the conclusion of the radio access network (RAN) 1#112 meeting, the terminal device can obtain the SRS configuration through dedicated signaling. Some parameters in the configuration are common to multiple cells. Furthermore, the serving cell can pass the SRS configuration information of the terminal device to the location management function (LMF) device through the NR positioning protocol a (NR positioning protocol a, NRPPa). The LMF can provide the configuration information to the adjacent cell so that the adjacent cell can measure the SRS sent from the terminal device when necessary. Therefore, each cell can provide the SRS configuration of multiple terminal devices it serves to the LMF and receive the SRS configuration of multiple terminal devices served by the adjacent cell. If the SRS configuration provided by a cell for terminal device A overlaps with the SRS configuration provided by another cell for terminal device B in some resources, an SRS conflict will occur.

[0048] To avoid interference between SRSs of different terminal devices, one approach is to coordinate SRS resource allocation across multiple cells. However, multi-cell resource coordination suffers from latency and unnecessary signaling overhead, and the LMF cannot act as a central unit to control radio resource allocation. Therefore, the system design for resource allocation coordination is relatively complex.

[0049] In addition, RAN2 proposes to pre-configure multiple SRS configurations to reduce the resource overhead of transmitting SRS configurations between cells. The pre-configured multiple SRS configurations can be delivered to the terminal device through dedicated signaling or system broadcast messages. If the configuration information is sent to the terminal device by broadcast, it may also cause interference and conflict problems. For example, if multiple terminal devices select corresponding SRS configurations from multiple SRS configurations, it may happen that two or more terminal devices select the same SRS configuration resources. When terminal devices that select the same SRS configuration send SRS, these SRSs will affect the transmission effect due to resource overlap and signal interference. For example, if two terminal devices select the same SRS configuration from multiple candidate configurations, their signals will interfere with each other and cause problems when the network node performs measurements.

[0050] It should be noted that the above-mentioned problem of SRS signal interference caused by the terminal device selecting one SRS configuration for LPHAP positioning from multiple SRS configurations is only an example. The embodiments of the present application can be applied to any type of scenario in which the terminal device selects one SRS configuration from multiple SRS configurations to send SRS.

[0051] To address some of the aforementioned issues, embodiments of the present application provide a method for wireless communication. In this method, a first terminal device can select a first SRS configuration from multiple SRS configurations based on a first rule. When multiple terminal devices select corresponding SRS configurations based on the same rule, the likelihood of conflicts can be effectively reduced. For ease of understanding, the method embodiment proposed in this embodiment of the present application is described in detail below with reference to FIG2 .

[0052] 2 , in step S210 , a first terminal device selects a first SRS configuration from a plurality of SRS configurations.

[0053] The first terminal device is any one of a plurality of terminal devices. Each of the plurality of terminal devices can be any of the terminal devices described above. In some embodiments, the first terminal device can be an LPHAP device that supports low-energy positioning. In some embodiments, the first terminal device can be a communication device that requires SRS configuration to send an uplink SRS.

[0054] In some embodiments, the first terminal device may be a terminal device in different states and having positioning requirements. For example, the first terminal device may be a terminal device that has been in an RRC inactive state for a long time. For example, the first terminal device may be a terminal device that is currently in an RRC idle state.

[0055] The first terminal device may obtain configuration information of multiple SRS configurations in various ways. In some embodiments, the first terminal device may determine multiple SRS configurations based on pre-configured information. In some embodiments, the first terminal device may determine multiple SRS configurations through communication with a network device.

[0056] As an embodiment, the network device may provide multiple SRS configurations to multiple terminal devices including the first terminal device through broadcasting. For example, the network device may send relevant information of the multiple SRS configurations through a system information block (SIB) in the broadcast information. The first terminal device may receive the multiple SRS configuration information in the broadcast information and select one SRS configuration from the multiple SRS configurations.

[0057] The network device may be any of the aforementioned communications devices that provide services to the terminal device, such as a base station. The network device may also be a core network element related to positioning services, such as a LMF. The network device may also be any network device or network element on the network side that is related to the transmission of SRS by the terminal device, without limitation.

[0058] Multiple SRS configurations may also be referred to as multiple sets of SRS configurations. Multiple SRS configurations may be used to indicate to a terminal device the radio resources for transmitting SRS. In some embodiments, multiple SRS configurations may be multiple sets of SRS resources preconfigured by a network device for positioning measurements or channel measurements. For example, a network device may preconfigure multiple SRS configurations, each of which targets a different positioning area. For another example, multiple SRS configurations may be used for positioning of a terminal device in an RRC inactive state or in an RRC idle state.

[0059] In some embodiments, the multiple SRS configurations may be valid in multiple cells, so that the terminal device does not need to be reconfigured or updated when used in multiple cells. For example, some parameters in the multiple SRS configurations are common to multiple cells.

[0060] In some embodiments, multiple SRS configurations may be used for terminal devices in different states to transmit SRSs. For example, multiple SRS configurations may be used for terminal devices that are in an RRC inactive state for a long time to transmit SRSs for positioning.

[0061] In some embodiments, multiple SRS configurations can be used for low-energy, high-precision positioning of multiple terminal devices, including the first terminal device. For example, the multiple SRS configurations can be SRS configurations provided by the network side to multiple LPHAP devices and used in multiple cells to reduce the energy consumption overhead of the terminal device positioning service.

[0062] The network device may provide the terminal device with multiple candidate SRS configurations using information related to multiple SRS configurations. The information related to multiple SRS configurations may include indication information of the radio resources corresponding to each SRS configuration, an index corresponding to each SRS configuration, and other information related to the SRS configurations.

[0063] In some embodiments, the indexes of multiple SRS configurations can facilitate the network device and / or terminal device to determine the selected SRS configuration resource based on the index value. The indexes of multiple SRS configurations can be serial numbers arranged in a certain order or implicit indexes associated with each SRS configuration, which are not limited here.

[0064] The SRS configuration selected by the first terminal device from among multiple SRS configurations may be referred to as a first SRS configuration. In some embodiments, the first terminal device selects an SRS configuration for transmitting the SRS from among multiple SRS configurations provided by the network device based on service requirements. If an appropriate SRS configuration is not selected, the first terminal device may not be able to effectively transmit the SRS.

[0065] The first SRS configuration is determined according to a first rule to reduce the possibility of multiple terminal devices selecting the same SRS configuration. In other words, the first rule can try to avoid multiple terminal devices selecting the same SRS configuration. The first rule can also be called an SRS configuration selection rule.

[0066] The first rule may be determined by the network device, may be specified in the protocol, or the network device may select one rule from multiple rules specified in the protocol, which is not limited here.

[0067] The first terminal device can obtain the first rule in a variety of ways. In some embodiments, the network device can pre-configure the first rule and notify multiple terminal devices including the first terminal device via broadcast signaling. In some embodiments, the first terminal device can obtain the first rule by receiving high-layer signaling.

[0068] As an implementation, the first rule may be random selection. For example, the first terminal device may randomly select an SRS configuration. When multiple terminal devices perform random selection, the probability of two or more terminal devices selecting the same SRS configuration is relatively high.

[0069] To prevent multiple terminal devices from repeatedly selecting the same SRS configuration, the first rule may map the SRS configuration to the terminal device. This mapping may be used to indicate the mapping relationship or correlation between different SRS configurations and different terminal devices. Each terminal device may determine the selected SRS configuration based on the mapping relationship or correlation.

[0070] In some embodiments, the multiple SRS configurations in the first rule may have a one-to-one correspondence with the multiple terminal devices. For example, when the multiple SRS configurations are used for positioning of a specified multiple terminal devices or a group of terminal devices, the multiple SRS configurations may include all SRS configurations that correspond one-to-one to an identifier (ID) for identifying each terminal device.

[0071] In some embodiments, there is no one-to-one correspondence between multiple SRS configurations and multiple terminal devices in the first rule. For example, when the number of terminal devices is greater than the number of SRS configurations, the SRS configurations and terminal devices cannot correspond one-to-one. In these scenarios, the first rule can be used to indicate the rule for terminal devices to select SRS. Based on this first rule, one SRS configuration may correspond to multiple terminal devices. For example, the first rule can clarify the correlation between the SRS configuration index and the terminal device ID. Based on this correlation, the probability of two or more terminal devices selecting the same SRS configuration can be reduced.

[0072] Multiple SRS configurations can be mapped to different terminal devices through the index of each SRS configuration to facilitate mutual confirmation between communication devices. In some embodiments, the first rule can indicate the mapping relationship between the indexes of multiple SRS configurations and multiple terminal devices. For example, since each terminal device can be distinguished by multiple information, the information used to distinguish the terminal devices can be mapped to the index of the SRS configuration. When each terminal device determines the corresponding index value according to the mapping relationship and determines the selected SRS configuration based on the index value, the probability of the SRS configuration being repeatedly selected will be much smaller than the probability of each terminal device randomly selecting an SRS configuration.

[0073] In some embodiments, multiple terminal devices may establish a mapping relationship with the index of the SRS configuration through one or more types of information. This information may be identification information of the terminal device itself, parameter information of the terminal device itself, identification information related to the service performed by the terminal device, or identification information of the cell in which the terminal device is performing the service.

[0074] As a possible implementation, the mapping relationship may include a mapping relationship between multiple SRS configuration indexes and multiple terminal device IDs. In other words, the selection of the SRS configuration index is related to the terminal device ID.

[0075] As an embodiment, the SRS configuration index selected by the terminal device may be equal to the last X digits of the terminal device ID. X may be determined based on the number of SRS configurations or the terminal device ID structure and is typically a natural number greater than or equal to 1. For example, when X = 2, if the ID of the first terminal device is 123405, the index of the SRS configuration selected by the first terminal device is 05, i.e., SRS configuration #5.

[0076] As an embodiment, the SRS configuration index selected by the terminal device can be determined by performing an operation on the terminal device ID. For example, the operation can be a modulo operation of the first terminal device ID and an integer Y value, such as Y = 8. The value of Y can be determined according to the number of SRS configurations.

[0077] As a possible implementation, the mapping relationship may include a mapping relationship between multiple SRS configuration indexes and multiple additional IDs used by terminal devices for positioning operations. In other words, the selection of the SRS configuration index is related to the ID used by the terminal device for SRS selection. As an embodiment, the additional ID may be preconfigured and may have a longer or shorter number of bits than the terminal device ID.

[0078] As an embodiment, when the first terminal device performs low-energy high-precision positioning, it is provided with an additional ID for LPHAP operation. The first terminal device may use the additional ID instead of its own ID when determining which SRS configuration to select.

[0079] As a possible implementation, the mapping relationship may include a mapping relationship between multiple SRS configuration indexes and cell IDs where multiple terminal devices are located. The cell may be the cell where the terminal device is positioned. In other words, the selection of the SRS configuration index is related to the ID of the cell where the first terminal device is located.

[0080] As a possible implementation, the mapping relationship indicated by the first rule may include the multiple mapping relationships described above. As an embodiment, when the first terminal device selects an SRS configuration index, the selection may be related to both the ID of the first terminal device itself and the ID of the cell in which the first terminal device is located. For example, the first terminal device ID and the cell ID may be calculated and then the SRS configuration may be selected according to the specified rule.

[0081] As shown in Figure 2, when multiple terminal devices, including the first terminal device, select SRS configurations according to a certain mapping relationship, the probability of two or more terminal devices selecting the same SRS configuration can be effectively reduced. However, when the number of SRS configurations is less than the number of terminal devices, no matter which rule is used, it is impossible to completely avoid SRS configuration selection conflicts.

[0082] To more effectively avoid SRS configuration selection conflicts, an embodiment of the present application further provides a method for wireless communication. In this method, after selecting a first SRS configuration, a first terminal device sends a first request to a network device to obtain a confirmation indication for use of the SRS configuration. Therefore, the first SRS configuration can only be used by the first terminal device to transmit the SRS if it receives confirmation from the network device. If the network device does not receive confirmation, the first terminal device can reselect an SRS configuration and / or initiate a request again. Only after receiving confirmation can the SRS configuration used for transmitting the SRS be determined.

[0083] For ease of understanding, the method by which a terminal device requests confirmation of an SRS configuration from a network device is described in detail below with reference to Figures 3 and 4. The methods shown in Figures 3 and 4 are related to the method shown in Figure 2. Therefore, for the sake of brevity, Figures 3 and 4 do not further explain the terms that appear in Figure 2.

[0084] Both FIG3 and FIG4 are written from the perspective of the interaction between the first terminal device and the network device.

[0085] 3 , in step S310 , the network device sends a plurality of SRS configurations. The first terminal device may receive the plurality of SRS configurations through various means such as broadcasting or dedicated signaling.

[0086] Step S320 is the same as step S210 in FIG. 2 and will not be described again here.

[0087] In step S330, the first terminal device sends a first request to the network device.

[0088] The first request can be used by the first terminal device to request the network device to confirm whether the first terminal device can use the first SRS configuration. In other words, the first request is initiated by the first terminal device to determine whether the first SRS configuration is available. The first request can also be called an SRS configuration confirmation request.

[0089] The first request can be sent to the network device in a variety of ways. In some embodiments, for a terminal device in an RRC inactive state, the first request can be sent to the network device based on a small data transmission (SDT) mechanism. In some embodiments, for a terminal device performing a random access channel (RACH) procedure, the first request can be carried in an uplink message of the random access procedure.

[0090] In order to facilitate the network device to confirm the SRS configuration selected by the terminal device, the first request can directly indicate the first SRS configuration selected by the first terminal device. For example, the first request can be used for the first terminal device to report the selected SRS configuration index to the network device. The network device can clarify which of the multiple SRS configurations the first SRS configuration selected by the first terminal device is based on the received first request. If multiple terminal devices request the network device to confirm the selected SRS configuration, the network device can determine whether the first SRS configuration has been configured for other terminal devices, thereby determining whether the first terminal device can use the first SRS configuration.

[0091] In some embodiments, the manner in which the first terminal device sends the first request may be related to the manner in which the first request indicates the first SRS configuration. For example, when the first request is sent to the network device via an index of the first SRS configuration among multiple SRS configurations, the manner in which the first request is sent may be determined based on the manner in which the first terminal device reports the selected SRS configuration index.

[0092] Taking the scheme in which the terminal device requests confirmation from the network device based on the SRS configuration index as an example, the first terminal device can directly indicate the selected first SRS configuration to the network device in an explicit manner, or it can make a confirmation request for the first SRS configuration to the network device in an implicit manner.

[0093] As a possible implementation, the index of the first SRS configuration can be carried in the uplink channel used for SDT. That is, the first terminal device can send the first request to the network device via an uplink SDT message. For example, the first terminal device can report the first SRS configuration to the network device via the physical uplink shared channel (PUSCH) in SDT to request confirmation from the network device.

[0094] As a possible implementation method, the index of the first SRS configuration can be carried in the uplink message of the RACH process. The RACH process can be a 4-step RACH process or a 2-step RACH process. In the 4-step RACH process, the uplink message sent by the terminal device mainly includes message 1 (Msg1) and message 3 (Msg3). In the 2-step RACH process, the uplink message sent by the terminal device mainly includes message A (MsgA).

[0095] As an embodiment, the index of the first SRS configuration may be carried in message 3 .

[0096] As an embodiment, the index of the first SRS configuration may be carried in message A.

[0097] As a possible implementation method, the first terminal device may send a first physical random access channel (PRACH) sequence corresponding to the index of the first SRS configuration for implicit indication. The PRACH sequence may also be referred to as a preamble sequence (or ID), and the terminal device typically sends a random access preamble during the random access channel process. The first PRACH sequence may be a PRACH sequence corresponding to the first SRS configuration index among multiple PRACH sequences. The first PRACH sequence corresponds to the index of the first SRS configuration, that is, corresponds to the first SRS configuration. Exemplarily, when there is a mapping relationship between the PRACH sequence and the SRS configuration index, the PRACH sequence itself can indicate the SRS configuration. Therefore, the terminal device can implicitly indicate the selected SRS configuration through PRACH transmission. For example, the first terminal device sending the first PRACH sequence corresponding to the first SRS configuration can be equivalent to sending a first request to the network device.

[0098] As an embodiment, the mapping relationship between the PRACH sequence and the SRS configuration index can be pre-configured (defined), or specified by the protocol, or dynamically configured based on the number of PRACH sequences and the number of SRS configurations. This mapping relationship can be notified to multiple terminal devices including the first terminal device through high-layer signaling.

[0099] As an embodiment, the PRACH sequence and SRS configuration index can be directly associated or can be associated through certain operations. For simplicity, PRACH sequences can be associated with the same SRS configuration index. For example, PRACH sequence #1 is associated with SRS configuration #1; PRACH sequence #2 is associated with SRS configuration #2; and so on.

[0100] Exemplarily, when the first SRS configuration is SRS configuration #2, the first terminal device may request the network device to confirm whether the first SRS configuration can be used by sending PRACH sequence #2.

[0101] As an embodiment, the first PRACH sequence may belong to a first PRACH sequence group, and multiple PRACH sequences in the first PRACH sequence group correspond one-to-one to multiple SRS configurations. As an example, the first PRACH sequence group may be a dedicated PRACH sequence group pre-configured by the network side for SRS configuration index reporting to support the confirmation request of the terminal device. The dedicated PRACH sequence group may also be specified in the protocol to facilitate the terminal device to implicitly indicate the SRS configuration through PRACH transmission.

[0102] Returning to FIG. 3 , in step S340 , the first terminal device receives the first indication information sent by the network device.

[0103] The first indication information may be used by the network device to confirm the use of the first SRS configuration to the first terminal device, that is, the first indication information may indicate that the first terminal device can use the first SRS configuration.

[0104] As described above, after receiving the first request sent by the first terminal device, the network device can confirm the first SRS configuration. For example, the network device can confirm whether the first SRS configuration is one of the multiple SRS configurations provided by the network device. For another example, the network device can confirm whether the first SRS configuration has been configured for other terminal devices. If so, the first terminal device will not be able to use the first SRS configuration. For another example, when multiple terminal devices request the first SRS configuration successively or simultaneously, the network device can confirm to which terminal device the first SRS configuration will ultimately be configured.

[0105] After the network device confirms the first SRS configuration, if it determines that the first terminal device can use the first SRS configuration, it will send first indication information to the network device. In contrast to the first request, the first indication information can also be sent in various ways. For example, the first indication information can be sent via a downlink message during the RACH process.

[0106] As a possible implementation method, if the first terminal device sends the first request through an uplink SDT message, the network device may send the first indication information through a downlink SDT message.

[0107] As a possible implementation manner, if the first terminal device sends the first request through message 3 in the 4-step RACH procedure, the network device may send the first indication information through message 4 (Msg4).

[0108] As a possible implementation manner, if the first terminal device sends the first request through message A in the 2-step RACH procedure, the network device may send the first indication information through message B (MsgB).

[0109] As a possible implementation method, if the first terminal device uses the first PRACH sequence corresponding to the index of the first SRS configuration to make an implicit request, the network device can also send the first indication information through a random access downlink message such as message 4 or message B.

[0110] In some embodiments, the first indication information may be an ACK feedback for confirming the SRS configuration.

[0111] The above, combined with Figure 3, describes the process by which the first SRS configuration selected by the first terminal device is confirmed by the network device. However, after confirming the first SRS configuration, the network device may discover that the first terminal device cannot use this SRS configuration. For example, if the first SRS configuration has already been configured for another terminal device, one solution for the network device is to not send the first indication information, so that the first terminal device cannot receive the information.

[0112] If the first terminal device does not receive the first indication information for confirmation, the first terminal device cannot use the first SRS configuration to send the SRS. In this scenario, the first terminal device needs to initiate a confirmation request to the network device again, that is, a second request.

[0113] In some embodiments, the second request sent by the first terminal device may be the same as the first request, that is, the second request may be used to request the network device to confirm whether the first terminal device can use the first SRS configuration.

[0114] The first terminal device may not be able to receive the first indication information in a variety of scenarios. For example, if the network device does not receive the first request, it will not send the first indication information. For another example, if the network device receives the first request, but the first terminal device cannot use the first SRS configuration, it will not send the first indication information. For another example, the network device sends the first indication information, but the first terminal device does not receive the information. In other words, the fact that the first terminal device does not receive the first indication information does not mean that the first SRS configuration cannot be used. Therefore, the first terminal device can send a confirmation request for the first SRS configuration to the network device again.

[0115] Exemplarily, if the first terminal device sends the first request based on the mapping relationship between the PRACH sequence and the SRS configuration index, the first terminal device may send the second request by retransmitting the same PRACH sequence.

[0116] In some embodiments, the second request sent by the first terminal device may be different from the first request, meaning that the first terminal device will reselect a new SRS configuration, i.e., the second SRS configuration, if it does not receive the first indication information. Therefore, the second request is used to request the network device to confirm whether the first terminal device can use the second SRS configuration.

[0117] Exemplarily, if the first terminal device sends a first request based on a mapping relationship between a PRACH sequence and an SRS configuration index, the terminal device may request whether another SRS configuration can be used by sending a PRACH sequence different from the first request.

[0118] Referring to FIG. 4 , step S410 and step S420 in FIG. 4 are consistent with step S320 and step S330 in FIG. 3 , and are not described in detail.

[0119] In step S430, the first terminal device does not receive the first indication information and selects a second SRS configuration. The second SRS configuration may be any one of multiple SRS configurations that is different from the first SRS configuration.

[0120] In step S440, the first terminal device sends a second request to the network device based on the second SRS configuration.

[0121] In some embodiments, if the network device confirms that the first terminal device cannot use the first SRS configuration, it may also send NACK feedback or other information indicating that the first SRS configuration cannot be used. If the first terminal device receives information indicating that the first SRS configuration cannot be used, it can directly select the second SRS configuration instead of sending a confirmation request for the first SRS configuration again. Therefore, if the network device sends an indication such as "cannot be used", it will help the first terminal device confirm the SRS configuration that can be used to send SRS as soon as possible, thereby improving communication efficiency.

[0122] In some embodiments, the first terminal device will continue to initiate requests until an SRS configuration that can be used is determined.

[0123] The above description, in conjunction with Figures 3 and 4, describes the SRS request and confirmation process and related signaling proposed in the embodiments of the present application. After selecting an SRS configuration, the first terminal device needs to obtain confirmation from the network device before using the SRS configuration. Therefore, the SRS configurations used by multiple terminal devices can be centrally managed by the network device, thereby avoiding the situation where two or more terminal devices use the same SRS configuration resources to send SRS, reducing signal interference.

[0124] It should be noted that if the first rule for multiple terminal devices to select an SRS configuration from multiple SRS configurations is random selection, it is necessary to send a confirmation request to the network device to effectively prevent two or more terminal devices from selecting the same SRS configuration. If the first rule for multiple terminal devices to select an SRS configuration from multiple SRS configurations is a mapping relationship between the SRS configuration and the terminal device, the multiple terminal devices may not send a confirmation request to the network device to improve the efficiency of selecting the SRS configuration, or they may send a confirmation request to the network device to further avoid SRS configuration conflicts.

[0125] As can be seen from Figures 2 to 4, the embodiments of the present application propose a new SRS selection and request mechanism. This mechanism, through a first rule and request confirmation, minimizes conflicts among multiple terminal devices in selecting corresponding SRS configurations from multiple SRS configurations. When this SRS configuration is used for a terminal device to perform LPHAP, the method of the embodiments of the present application can reduce possible interference issues when performing uplink positioning for terminal devices in an RRC inactive state.

[0126] The following takes multiple SRS configurations for terminal devices to perform positioning measurements as an example, and in conjunction with Figure 5, a more complete description of the embodiment of the present application. It should be noted that the examples of Figures 2 to 4 are merely to help those skilled in the art understand the embodiment of the present application, and are not intended to limit the embodiment of the present application to the specific numerical values ​​or specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples of Figures 2 to 4 given, and such modifications or changes also fall within the scope of the embodiment of the present application.

[0127] FIG5 is a flow chart illustrating a possible implementation method provided by an embodiment of the present application. The dotted line in FIG5 indicates that the process is not executed. FIG5 is written from the perspective of interaction between a first terminal device, a network device (e.g., a base station), and a positioning server (e.g., an LMF). The first terminal device can be any one of multiple terminal devices.

[0128] 5 , in step S510 , a network device coordinates SRS configuration of multiple network devices with a positioning server.

[0129] In step S520 , the network device broadcasts multiple SRS configurations, and the first terminal device determines the multiple SRS configurations for selection based on the broadcast message.

[0130] In step S530, the first terminal device selects an SRS configuration according to a pre-configured rule, where the pre-configured rule may be the first rule mentioned above.

[0131] In step S540, the first terminal device indicates the selected SRS configuration index to the network device through the RACH process. The SRS configuration selected by the first terminal device is the first SRS configuration.

[0132] In step S550, the first terminal device selects a new SRS configuration and sends an instruction to the network device. As shown in Figure 5, after step S540, the network device does not confirm its selected first SRS configuration to the first terminal device. The SRS configuration newly selected by the first terminal device is the second SRS configuration.

[0133] In step S560 , the network device confirms the newly selected SRS configuration, ie, the second SRS configuration, to the first terminal device.

[0134] In step S570 , the first terminal device sends an SRS based on the confirmed second SRS configuration.

[0135] In step S580, the network device and the positioning server perform positioning measurements and reports based on the SRS sent by the first terminal device.

[0136] The method embodiment of the present application is described in detail above with reference to Figures 2 to 5 . The device embodiment of the present application is described in detail below with reference to Figures 6 to 8 . It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for portions not described in detail, reference can be made to the preceding method embodiment.

[0137] FIG6 is a schematic block diagram of an apparatus for positioning according to an embodiment of the present application. The apparatus 600 may be the first terminal device described above. The apparatus 600 shown in FIG6 includes a sending unit 610.

[0138] The selection unit 610 may be configured to select a first SRS configuration from a plurality of SRS configurations, where the first SRS configuration is determined according to a first rule.

[0139] Optionally, the first rule is used to indicate a mapping relationship between indexes of multiple SRS configurations and multiple terminal devices including the first terminal device.

[0140] Optionally, the mapping relationship includes one or more of the following: a mapping relationship between the indexes of multiple SRS configurations and the IDs of multiple terminal devices; a mapping relationship between the indexes of multiple SRS configurations and the additional IDs for positioning operations of multiple terminal devices; a mapping relationship between the indexes of multiple SRS configurations and the cell IDs for positioning of multiple terminal devices.

[0141] Optionally, the apparatus 600 further includes a first sending unit, which may be configured to send a first request to the network device, where the first request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration.

[0142] Optionally, the first request indicates the first SRS configuration in one of the following ways: the index of the first SRS configuration is carried in the uplink channel for small data transmission; the index of the first SRS configuration is carried in the uplink message in the RACH process; and the first PRACH sequence corresponding to the index of the first SRS configuration is sent.

[0143] Optionally, the first PRACH sequence belongs to a first PRACH sequence group, and multiple PRACH sequences in the first PRACH sequence group correspond one-to-one to multiple SRS configurations.

[0144] Optionally, the apparatus 600 further includes a receiving unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate that the first terminal device can use the first SRS configuration.

[0145] Optionally, the first indication information is sent via a downlink message in a RACH process.

[0146] Optionally, the apparatus 600 further includes a second sending unit, which can be used to send a second request if the first terminal device does not receive the first indication information, and the second request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration or the second SRS configuration.

[0147] Optionally, multiple SRS configurations are used to perform low-energy and high-precision positioning for multiple terminal devices including the first terminal device.

[0148] FIG7 is a schematic block diagram of an apparatus for wireless communication according to another embodiment of the present application. The apparatus 700 may be any of the network devices described above. The apparatus 700 shown in FIG7 includes a sending unit 710.

[0149] The sending unit 710 may be configured to send multiple SRS configurations, where the multiple SRS configurations are used for a first terminal device to select a first SRS configuration, where the first SRS configuration is determined according to a first rule.

[0150] Optionally, the first rule is used to indicate a mapping relationship between indexes of multiple SRS configurations and multiple terminal devices including the first terminal device.

[0151] Optionally, the mapping relationship includes one or more of the following: a mapping relationship between the indexes of multiple SRS configurations and the IDs of multiple terminal devices; a mapping relationship between the indexes of multiple SRS configurations and the additional IDs for positioning operations of multiple terminal devices; a mapping relationship between the indexes of multiple SRS configurations and the cell IDs for positioning of multiple terminal devices.

[0152] Optionally, the apparatus 700 further includes a first receiving unit, configured to receive a first request sent by a first terminal device, where the first request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration.

[0153] Optionally, the first request indicates the first SRS configuration in one of the following ways: the index of the first SRS configuration is carried in the uplink channel for small data transmission; the index of the first SRS configuration is carried in the uplink message in the RACH process; and the first PRACH sequence corresponding to the index of the first SRS configuration is sent.

[0154] Optionally, the first PRACH sequence belongs to a first PRACH sequence group, and multiple PRACH sequences in the first PRACH sequence group correspond one-to-one to multiple SRS configurations.

[0155] Optionally, the sending unit 710 is further used to send first indication information to the first terminal device, where the first indication information is used to indicate that the first terminal device can use the first SRS configuration.

[0156] Optionally, the first indication information is sent via a downlink message in a RACH process.

[0157] Optionally, the apparatus 700 further includes a second receiving unit, which can be used to receive a second request sent by the first terminal device if the first terminal device does not receive the first indication information, the second request being used to request the network device to confirm whether the first terminal device can use the first SRS configuration or the second SRS configuration.

[0158] Optionally, multiple SRS configurations are used to perform low-energy and high-precision positioning for multiple terminal devices including the first terminal device.

[0159] FIG8 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in FIG8 indicate that the unit or module is optional. The device 800 may be used to implement the method described in the above method embodiment. The device 800 may be a chip or a terminal device.

[0160] The device 800 may include one or more processors 810. The processor 810 may support the device 800 to implement the method described in the method embodiment above. The processor 810 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0161] The apparatus 800 may further include one or more memories 820. The memories 820 store programs that can be executed by the processor 810, causing the processor 810 to perform the methods described in the above method embodiments. The memories 820 may be independent of the processor 810 or integrated into the processor 810.

[0162] The apparatus 800 may further include a transceiver 830. The processor 810 may communicate with other devices or chips via the transceiver 830. For example, the processor 810 may transmit and receive data with other devices or chips via the transceiver 830.

[0163] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0164] It should be understood that the computer-readable storage medium mentioned in the embodiments of the present application can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0165] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0166] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0167] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0168] The terms "system" and "network" in this application may be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

[0169] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0170] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0171] In an embodiment of the present application, "pre-configuration" can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device). This application does not limit its specific implementation method.

[0172] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, a NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0173] In the embodiments of the present application, determining B based on A does not mean determining B only based on A. B can also be determined based on A and / or other information.

[0174] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related 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 document generally indicates that the related objects are in an "or" relationship.

[0175] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0176] In the several embodiments provided in this 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 merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0177] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0178] 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.

[0179] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for wireless communication, characterized in that: include: The first terminal device selects a first sounding reference signal SRS configuration from multiple SRS configurations, where the first SRS configuration is determined according to a first rule.

2. The method according to claim 1, characterized in that The first rule is used to indicate a mapping relationship between indexes of the multiple SRS configurations and multiple terminal devices including the first terminal device.

3. The method according to claim 2, characterized in that The mapping relationship includes one or more of the following: A mapping relationship between the indexes of the multiple SRS configurations and the identification IDs of the multiple terminal devices; A mapping relationship between the indexes of the multiple SRS configurations and the additional IDs for the multiple terminal devices to perform positioning operations; The mapping relationship between the indexes of the multiple SRS configurations and the cell IDs for positioning the multiple terminal devices.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: The first terminal device sends a first request to a network device, where the first request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration.

5. The method according to claim 4, characterized in that The first request indicates the first SRS configuration in one of the following ways: The index of the first SRS configuration is carried in an uplink channel used for small data transmission; The index of the first SRS configuration is carried in an uplink message in a random access channel RACH process; Send a first physical random access channel PRACH sequence corresponding to the index of the first SRS configuration.

6. The method according to claim 5, characterized in that The first PRACH sequence belongs to a first PRACH sequence group, and multiple PRACH sequences in the first PRACH sequence group correspond one-to-one to the multiple SRS configurations.

7. The method according to any one of claims 4 to 6, characterized in that: The method further comprises: The first terminal device receives first indication information sent by the network device, where the first indication information is used to indicate that the first terminal device can use the first SRS configuration.

8. The method according to claim 7, characterized in that The first indication information is sent via a downlink message in a RACH process.

9. The method according to any one of claims 4 to 6, characterized in that: The method further comprises: If the first terminal device does not receive the first indication information, the first terminal device sends a second request, where the second request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration or the second SRS configuration.

10. The method according to any one of claims 1 to 9, characterized in that The multiple SRS configurations are used to perform low-energy and high-precision positioning on multiple terminal devices including the first terminal device.

11. A method for wireless communication, characterized in that: include: The network device sends multiple sounding reference signal SRS configurations, and the multiple SRS configurations are used for the first terminal device to select a first SRS configuration, and the first SRS configuration is determined according to a first rule.

12. The method according to claim 11, characterized in that The first rule is used to indicate a mapping relationship between indexes of the multiple SRS configurations and multiple terminal devices including the first terminal device.

13. The method according to claim 12, characterized in that The mapping relationship includes one or more of the following: A mapping relationship between the indexes of the multiple SRS configurations and the identification IDs of the multiple terminal devices; A mapping relationship between the indexes of the multiple SRS configurations and the additional IDs for the multiple terminal devices to perform positioning operations; The mapping relationship between the indexes of the multiple SRS configurations and the cell IDs for positioning the multiple terminal devices.

14. The method according to any one of claims 11 to 13, characterized in that The method further comprises: The network device receives a first request sent by the first terminal device, where the first request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration.

15. The method according to claim 14, characterized in that The first request indicates the first SRS configuration in one of the following ways: The index of the first SRS configuration is carried in an uplink channel used for small data transmission; The index of the first SRS configuration is carried in an uplink message in a random access channel RACH process; Send a first physical random access channel PRACH sequence corresponding to the index of the first SRS configuration.

16. The method according to claim 15, characterized in that The first PRACH sequence belongs to a first PRACH sequence group, and multiple PRACH sequences in the first PRACH sequence group correspond one-to-one to the multiple SRS configurations.

17. The method according to any one of claims 14 to 16, characterized in that: The method further comprises: The network device sends first indication information to the first terminal device, where the first indication information is used to indicate that the first terminal device can use the first SRS configuration.

18. The method according to claim 17, characterized in that The first indication information is sent via a downlink message in a RACH process.

19. The method according to any one of claims 14 to 16, characterized in that: The method further comprises: If the first terminal device does not receive the first indication information, the network device receives a second request sent by the first terminal device, where the second request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration or the second SRS configuration.

20. The method according to any one of claims 11 to 19, characterized in that The multiple SRS configurations are used to perform low-energy and high-precision positioning on multiple terminal devices including the first terminal device.

21. A device for wireless communication, characterized in that: The device is a first terminal device, and the device includes: The selection unit is configured to select a first sounding reference signal SRS configuration from a plurality of SRS configurations, where the first SRS configuration is determined according to a first rule.

22. The device according to claim 21, characterized in that The first rule is used to indicate a mapping relationship between indexes of the multiple SRS configurations and multiple terminal devices including the first terminal device.

23. The device according to claim 22, characterized in that The mapping relationship includes one or more of the following: A mapping relationship between the indexes of the multiple SRS configurations and the identification IDs of the multiple terminal devices; A mapping relationship between the indexes of the multiple SRS configurations and the additional IDs for the multiple terminal devices to perform positioning operations; The mapping relationship between the indexes of the multiple SRS configurations and the cell IDs for positioning the multiple terminal devices.

24. The device according to any one of claims 21 to 23, characterized in that The device also includes: The first sending unit is used to send a first request to a network device, where the first request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration.

25. The device according to claim 24, characterized in that The first request indicates the first SRS configuration in one of the following ways: The index of the first SRS configuration is carried in an uplink channel used for small data transmission; The index of the first SRS configuration is carried in an uplink message in a random access channel RACH process; Send a first physical random access channel PRACH sequence corresponding to the index of the first SRS configuration.

26. The device according to claim 25, characterized in that The first PRACH sequence belongs to a first PRACH sequence group, and multiple PRACH sequences in the first PRACH sequence group correspond one-to-one to the multiple SRS configurations.

27. The device according to any one of claims 24 to 26, characterized in that The device also includes: A receiving unit is used to receive first indication information sent by the network device, where the first indication information is used to indicate that the first terminal device can use the first SRS configuration.

28. The device according to claim 27, characterized in that The first indication information is sent via a downlink message in a RACH process.

29. The device according to any one of claims 24 to 26, characterized in that The device also includes: The second sending unit is used to send a second request if the first terminal device does not receive the first indication information, and the second request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration or the second SRS configuration.

30. The device according to any one of claims 21 to 29, characterized in that The multiple SRS configurations are used to perform low-energy and high-precision positioning on multiple terminal devices including the first terminal device.

31. A device for wireless communication, characterized in that: The device is a network device, and the device includes: A sending unit is used to send multiple sounding reference signal SRS configurations, where the multiple SRS configurations are used for a first terminal device to select a first SRS configuration, and the first SRS configuration is determined according to a first rule.

32. The device according to claim 31, characterized in that The first rule is used to indicate a mapping relationship between indexes of the multiple SRS configurations and multiple terminal devices including the first terminal device.

33. The device according to claim 32, characterized in that The mapping relationship includes one or more of the following: A mapping relationship between the indexes of the multiple SRS configurations and the identification IDs of the multiple terminal devices; A mapping relationship between the indexes of the multiple SRS configurations and the additional IDs for the multiple terminal devices to perform positioning operations; The mapping relationship between the indexes of the multiple SRS configurations and the cell IDs for positioning the multiple terminal devices.

34. The device according to any one of claims 31 to 33, characterized in that The device also includes: The first receiving unit is used to receive a first request sent by the first terminal device, where the first request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration.

35. The device according to claim 34, characterized in that The first request indicates the first SRS configuration in one of the following ways: The index of the first SRS configuration is carried in an uplink channel used for small data transmission; The index of the first SRS configuration is carried in an uplink message in a random access channel RACH process; Send a first physical random access channel PRACH sequence corresponding to the index of the first SRS configuration.

36. The device according to claim 35, characterized in that The first PRACH sequence belongs to a first PRACH sequence group, and multiple PRACH sequences in the first PRACH sequence group correspond one-to-one to the multiple SRS configurations.

37. The device according to any one of claims 33 to 36, characterized in that The sending unit is further used to send first indication information to the first terminal device, where the first indication information is used to indicate that the first terminal device can use the first SRS configuration.

38. The device according to claim 37, characterized in that The first indication information is sent via a downlink message in a RACH process.

39. The device according to any one of claims 33 to 36, characterized in that The device also includes: The second receiving unit is used to receive a second request sent by the first terminal device if the first terminal device does not receive the first indication information, and the second request is used to request the network device to confirm whether the first terminal device can use the first SRS configuration or the second SRS configuration.

40. The device according to any one of claims 31 to 39, characterized in that The multiple SRS configurations are used to perform low-energy and high-precision positioning on multiple terminal devices including the first terminal device.

41. A communication device, characterized in that: The invention comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory to execute the method according to any one of claims 1 to 20.

42. A communication device, characterized in that: The invention comprises a processor, which is used to call a program from a memory to execute the method according to any one of claims 1 to 20.

43. A chip, characterized in that: The device comprises a processor, which is used to call a program from a memory so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 20.

44. A computer-readable storage medium, characterized in that A program is stored thereon, and the program enables a computer to execute the method according to any one of claims 1 to 20.

45. A computer program product, characterized in that The method comprises a program which causes a computer to execute the method according to any one of claims 1 to 20.

46. ​​A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 20.

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