Wireless Communication Method and Device

Abstract

An embodiment of the present application provides a wireless communication method and device. The method includes: receiving first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal (SRS) triggering signaling on a first cell is used to trigger SRS on at least one second cell, and the first indication information is carried by a media access control control element (MAC CE) signaling. Through the first indication information, the aperiodic SRS triggering signaling on the first cell can trigger the SRS transmission of a terminal device on at least one second cell. In other words, it is possible to achieve the triggering transmission of aperiodic SRS across cells (or across carriers) in a multi-cell scenario.

Description

Technical Field

[0001] Embodiments of this application relate to the field of communications, and more particularly, to wireless communication methods and devices. Background Art

[0002] In a New Radio (NR) system, a network device may trigger a terminal device to transmit an aperiodic sounding reference signal (SRS) through an aperiodic SRS trigger signaling.

[0003] However, if the aperiodic SRS trigger signaling is sent on cell X, the aperiodic SRS trigger signaling can only trigger the transmission of an aperiodic SRS on the uplink corresponding to cell X. However, this triggering method has many limitations for multi-cell scenarios. For example, in a Carrier Aggregation (CA) scenario.

[0004] Therefore, how to achieve the triggering transmission of cross-cell (or cross-carrier) aperiodic SRS in a multi-cell scenario is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] Embodiments of this application provide a wireless communication method and device, which can achieve the triggering transmission of cross-cell (or cross-carrier) aperiodic SRS in a multi-cell scenario.

[0006] In a first aspect, a wireless communication method is provided, including:

[0007] Receiving first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal (SRS) trigger signaling on a first cell is used to trigger an SRS on at least one second cell, and the first indication information is carried by a Media Access Control Control Element (MAC CE) signaling.

[0008] In a second aspect, a wireless communication method is provided, including:

[0009] Sending first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal (SRS) trigger signaling on a first cell is used to trigger an SRS on at least one second cell, and the first indication information is carried by a Media Access Control Control Element (MAC CE) signaling.

[0010] In a third aspect, a wireless communication method is provided, including:

[0011] Receiving second indication information, where the second indication information is used to indicate that a sounding reference signal (SRS) on a first cell can be triggered by an aperiodic SRS trigger signaling on at least one third cell, and the second indication information is carried by a Media Access Control Control Element (MAC CE) signaling.

[0012] Fourthly, a wireless communication method is provided, including:

[0013] Sending second indication information, where the second indication information is used to indicate that the sounding reference signal (SRS) on a first cell can be triggered by an aperiodic SRS trigger signaling on at least one third cell, and the second indication information is carried by a media access control control element (MAC CE) signaling.

[0014] Fifthly, a terminal device is provided for performing the method in the first aspect or its various implementation manners. Specifically, the terminal device includes functional modules for performing the method in the first aspect or its various implementation manners.

[0015] Sixthly, a network device is provided for performing the method in the second aspect or its various implementation manners. Specifically, the network device includes functional modules for performing the method in the second aspect or its various implementation manners.

[0016] Seventhly, a terminal device is provided for performing the method in the third aspect or its various implementation manners. Specifically, the terminal device includes functional modules for performing the method in the third aspect or its various implementation manners.

[0017] Eighthly, a network device is provided for performing the method in the fourth aspect or its various implementation manners. Specifically, the network device includes functional modules for performing the method in the fourth aspect or its various implementation manners.

[0018] Ninthly, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the method in the first aspect or its various implementation manners.

[0019] Tenthly, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the method in the second aspect or its various implementation manners.

[0020] Eleventhly, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the method in the third aspect or its various implementation manners.

[0021] In a twelfth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the fourth aspect or its various implementation manners as described above.

[0022] In a thirteenth aspect, a chip is provided for implementing the method in any one of the first to fourth aspects or its various implementation manners as described above. Specifically, the chip includes: a processor, configured to call and run a computer program from a memory, such that a device installed with the chip executes the method in any one of the first to fourth aspects or its various implementation manners as described above.

[0023] In a fourteenth aspect, a computer-readable storage medium is provided for storing a computer program, and the computer program causes a computer to execute the method in any one of the first to fourth aspects or its various implementation manners as described above.

[0024] In a fifteenth aspect, a computer program product is provided, including computer program instructions, and the computer program instructions cause a computer to execute the method in any one of the first to fourth aspects or its various implementation manners as described above.

[0025] In a sixteenth aspect, a computer program is provided, which when running on a computer, causes the computer to execute the method in any one of the first to fourth aspects or its various implementation manners as described above.

[0026] Based on the above technical solutions, through the first indication information, the aperiodic SRS triggering signaling on the first cell can trigger the SRS transmission of the terminal device on at least one second cell. In other words, it can achieve the triggering transmission of aperiodic SRS across cells (or across carriers) in a multi-cell scenario.

[0027] In addition, it avoids triggering the SRS only by the aperiodic SRS triggering signaling received by each cell itself, which can not only improve the flexibility of the triggering signaling, but also reduce the resource consumption of the aperiodic SRS triggering signaling (DCI). BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an example of the system framework provided by an embodiment of the present application.

[0029] Figure 2 is a schematic interaction diagram of the wireless communication method provided by an embodiment of the present application.

[0030] Figures 3 to 25 is a schematic diagram of the MAC CE provided by an embodiment of the present application.

[0031] Figure 26It is another schematic interaction diagram of the wireless communication method provided by the embodiments of the present application.

[0032] Figure 27 It is a schematic block diagram of a terminal device provided by the embodiments of the present application.

[0033] Figure 28 It is a schematic block diagram of a network device provided by the embodiments of the present application

[0034] Figure 29 It is another schematic block diagram of a terminal device provided by the embodiments of the present application.

[0035] Figure 30 It is another schematic block diagram of a network device provided by the embodiments of the present application.

[0036] Figure 31 It is a schematic block diagram of a communication device provided by the embodiments of the present application.

[0037] Figure 32 It is a schematic block diagram of a chip provided by the embodiments of the present application. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0039] Figure 1 It is a schematic diagram of an application scenario of the embodiments of the present application.

[0040] As Figure 1 shown, the communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 through the air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.

[0041] It should be understood that the embodiments of the present application are only exemplarily illustrated by the communication system 100, but the embodiments of the present application are not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

[0042] In Figure 1 In the communication system 100 shown, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 (such as a UE) located within the coverage area.

[0043] The network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a radio controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0044] The terminal device 110 may be any terminal device, including but not limited to a terminal device that is wired or wirelessly connected to the network device 120 or other terminal devices.

[0045] For example, the terminal device 110 may refer to an access terminal, a User Equipment (UE), a user unit, a user station, a mobile station, a mobile device, 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 capabilities, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved network, etc.

[0046] The terminal device 110 may be used for Device to Device (D2D) communication.

[0047] The wireless communication system 100 may further include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G Core (5GC) device. For example, it may be an Access and Mobility Management Function (AMF), or an Authentication Server Function (AUSF), or a User Plane Function (UPF), or a Session Management Function (SMF). Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device of the LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that SMF+PGW-C can simultaneously implement the functions that SMF and PGW-C can achieve. During the network evolution process, the above core network devices may also have other names, or new network entities may be formed by partitioning the functions of the core network. The embodiments of this application do not limit this.

[0048] The various functional units in the communication system 100 may also establish connections through the next generation (NG) interface to achieve communication.

[0049] For example, the terminal device establishes a radio interface connection with the access network device through the NR interface for transmitting user plane data and control plane signaling; the terminal device may establish a control plane signaling connection with the AMF through the NG interface 1 (abbreviated as N1); the access network device, such as a next-generation radio access base station (gNB), may establish a user plane data connection with the UPF through the NG interface 3 (abbreviated as N3); the access network device may establish a control plane signaling connection with the AMF through the NG interface 2 (abbreviated as N2); the UPF may establish a control plane signaling connection with the SMF through the NG interface 4 (abbreviated as N4); the UPF may interact with the data network for user plane data through the NG interface 6 (abbreviated as N6); the AMF may establish a control plane signaling connection with the SMF through the NG interface 11 (abbreviated as N11); the SMF may establish a control plane signaling connection with the PCF through the NG interface 7 (abbreviated as N7).

[0050] Figure 1Exemplarily, a base station, a core network device, and two terminal devices are shown. Optionally, the wireless communication system 100 may include multiple base station devices, and the coverage range of each base station may include other numbers of terminal devices. The embodiments of the present application do not limit this.

[0051] It should be understood that in the embodiments of the present application, devices with communication functions in the network / system can all be referred to as communication devices. Taking Figure 1 the shown communication system 100 as an example, the communication devices may include network devices 120 with communication functions and terminal devices 110. The network devices 120 and the terminal devices 110 may be the devices described above, which will not be elaborated here; the communication devices may also include other devices in the communication system 100, such as other network entities like network controllers and mobility management entities. The embodiments of the present application do not limit this.

[0052] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term " / and" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the preceding and following associated objects.

[0053] The embodiments of the present application provide a wireless communication method, which can be used to determine the time slot for sending SRS.

[0054] For the convenience of understanding the embodiments of the present application, SRS will be introduced below.

[0055] The sounding reference signal (SRS) is an important reference signal in the 5G / NR system and is widely used in various functions in the NR system. For example, SRS can be used in the following scenarios:

[0056] 1. For the acquisition of downlink channel state information (UE sounding procedure for DL CSI acquisition)

[0057] 2. For frequency domain scheduling and precoding determination of uplink transmission;

[0058] 3. For the antenna switching function;

[0059] 4. For the carrier switching function (UE sounding procedure between component carriers);

[0060] 5. For positioning function;

[0061] 6. To cooperate with codebook-based uplink transmission;

[0062] 7. To cooperate with Non-Codebook based uplink transmission.

[0063] The network device can configure one or more SRS Resource sets for a terminal device, and each SRS Resource set can be configured with one or more SRS resources.

[0064] The transmission of SRS can be divided into Periodic, Semi-persistent, and Aperiodic.

[0065] Periodic SRS refers to the SRS transmitted periodically, whose period and slot offset are configured by RRC signaling. Once the terminal device receives the corresponding configuration parameters, it sends SRS according to a certain period until the RRC configuration becomes invalid. The spatial relation information of the periodic SRS is also configured by RRC signaling. The spatial relation information can indicate a Channel State Information Reference Signal (CSI-RS), a Synchronization Signal / PBCH Block (SSB), or a reference SRS. For example, the transmission beam of the periodic SRS can be indicated in an implicit manner. For example, the terminal device determines the transmission beam of the periodic SRS based on the indicated CSI-RS / SSB. Another example is that the terminal device can determine the transmission beam used for transmitting SRS on the SRS resource through the spatial relation information of the SRS resource.

[0066] The period and slot offset of the semi-persistent SRS are configured by RRC signaling, but its activation and deactivation signaling are carried by MAC CE. The terminal device starts transmitting SRS after receiving the activation signaling until it receives the deactivation signaling. The spatial relation information (transmission beam) of the semi-persistent SRS is carried together with the MAC CE that activates the SRS.

[0067] After the terminal device receives the period and slot offset configured by RRC, it determines the time slots available for transmitting SRS according to the following formula:

[0068]

[0069] Among them, T SRS and T offset are the configured period and offset, and n f and are the radio frame and time slot respectively.

[0070] Aperiodic SRS transmission means that the network device can trigger the SRS transmission of the terminal device through DCI. The triggering signaling used to trigger the aperiodic SRS transmission can be carried by the DCI for scheduling PUSCH / PDSCH in the UE-specific search space or the common search space, or can be carried by the DCI format 2_3 in the common search space.

[0071] Among them, DCI format 2_3 can not only be used to trigger the aperiodic SRS transmission, but also be used to configure the power control instruction (TPC) commands of the SRS on a group of UEs or a group of carriers at the same time.

[0072] Table 1 SRS Triggering Signaling

[0073]

[0074] For example, if the value of the SRS request field in the DCI is 11, the triggering signaling of the SRS indicates that the SRS resource group with the aperiodic SRS resource trigger (aperiodicSRS-ResourceTrigger) set to 3 in the higher layer parameters is used for SRS transmission.

[0075] After receiving the aperiodic SRS triggering signaling (such as DCI), the terminal device performs SRS transmission on the aperiodic SRS resource group indicated by the triggering signaling. Among them, the slot offset between the triggering signaling and the SRS transmission can be configured by the higher layer signaling (RRC). The network device pre-indicates to the terminal device the configuration parameters of each SRS resource group through the higher layer signaling, including time-frequency resources, sequence parameters, power control parameters, etc. In addition, for each SRS resource in the triggered SRS resource group, the terminal device can also determine the transmission beam used for transmitting the SRS on this resource through the spatial correlation information of this resource, and this spatial correlation information can be configured to each SRS resource through RRC.

[0076] In the New Radio (NR) system, to support various possible deployment scenarios and various future new service types, the system design is very flexible. For example, the uplink and downlink resources can be indicated and adjusted through high-layer signaling and physical-layer signaling. Therefore, for a time slot (slot) or some symbols on a slot, they may be used for transmissions in different directions at different times. For example, at a certain moment, it can be used for uplink transmission, and at another moment, it can be used for downlink transmission.

[0077] However, as mentioned above, for the aperiodic Sounding Reference Signal (SRS), its slot offset can be configured by high-layer signaling. That is, before the RRC signaling reconfigures other values, the slot offset between each trigger signaling and the SRS transmission remains unchanged, resulting in a fixed relative position between the slot for receiving the trigger signaling and the slot for transmitting the SRS, which increases the restrictions and reduces the system flexibility.

[0078] For example, assume the slot offset is k. If it is necessary to trigger the SRS to be transmitted on slot n + k, then the corresponding trigger signaling can only be sent on slot n, which limits the timing of sending the trigger signaling and adds additional unnecessary restrictions to the scheduling work of the network device.

[0079] Another example is that when a certain slot, or some symbols on a certain slot, are dynamically changed from being able to be used for uplink transmission to downlink transmission, it may cause a non-periodic SRS not to be transmitted. For example, if slot n + k is changed to be used for downlink transmission, then the trigger SRS signaling sent on slot n is invalid, or the trigger signaling cannot be sent on slot n.

[0080] In some embodiments of the present application, if the network device sends an SRS trigger signaling on slot n, the terminal device can transmit the SRS on slot n + k or the first valid slot after that. By transmitting the SRS on slot n + k or the first valid slot after that, although the success rate of transmitting the SRS can be improved, the efficiency is not high, and it will also increase the configuration and scheduling complexity of the network device. The main reason is that the valid slot is not fixed and needs to be determined according to relevant configurations or factors (such as uplink and downlink slot configurations and / or indications).

[0081] Furthermore, embodiments of the present application provide a wireless communication method.

[0082] It should be noted that in the embodiments of the present application, the time slot that can be used or is available for transmitting the SRS is referred to as a valid slot.

[0083] Figure 2 FIG. 200 shows a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. The method 200 may be executed by interaction between a terminal device and a network device. Figure 2 The terminal device shown in FIG. 200 may be such as Figure 1 the terminal device shown in FIG. 200, Figure 2 The network device shown in FIG. 200 may be such as Figure 1 the access network device shown in FIG. 200.

[0084] Such as Figure 2 shown in FIG. 200, the method 200 may include:

[0085] S210, the terminal device receives first indication information sent by the network device. The first indication information is used to indicate that an aperiodic sounding reference signal (SRS) trigger signaling on a first cell is used to trigger SRS on at least one second cell. The first indication information is carried by a media access control control element (MAC CE) signaling.

[0086] For example, after the terminal device receives the first indication information and receives the aperiodic SRS trigger signaling on the first cell, the terminal device may be triggered to send SRS on the at least one second cell.

[0087] It should be noted that the cell involved in the embodiment of the present application may be equivalent to a carrier. For example, a cell may be equivalent to a component carrier (CC) in a carrier aggregation (CA) scenario. In other words, the first indication information may be used to indicate that an aperiodic SRS trigger signaling on a first carrier is used to trigger SRS on at least one second carrier. In addition, the at least one second cell may be one cell, a group of cells, or multiple cells, and the present application does not make specific limitations thereto.

[0088] For example, if the at least one second cell is one second cell, equivalently, the first indication information is used to indicate that the aperiodic SRS trigger signaling on the first cell can be used to trigger SRS on another cell. Again, if the at least one second cell is a group of cells, equivalently, the first indication information can be used to indicate that the aperiodic SRS trigger signaling on the first cell can be used to trigger SRS on a group of cells. Again, if the at least one second cell is multiple cells, equivalently, the first indication information can be used to indicate that the SRS trigger command on the first cell can be used to trigger SRS on multiple cells. It should be understood that the group of cells or the multiple cells may or may not include the first cell, and the embodiment of the present application does not make specific limitations thereto.

[0089] Through the first indication information, the aperiodic SRS triggering signaling on the first cell can trigger the SRS transmission of the terminal device on at least one second cell. In other words, it can realize the triggering transmission of aperiodic SRS across cells (or across carriers) in a multi-cell scenario.

[0090] In addition, it avoids triggering the SRS only through the aperiodic SRS triggering signaling received by each cell itself, which can not only improve the flexibility of the triggering signaling, but also reduce the resource consumption of the aperiodic SRS triggering signaling (DCI).

[0091] In some embodiments of the present application, the first indication information is used to indicate the aperiodic SRS triggering signaling on the first cell or the first bandwidth part BWP of the first cell, for triggering the SRS on the at least one second cell corresponding to the first cell or the first BWP.

[0092] In other words, the at least one second cell corresponding to the first cell or the first BWP can be understood as: the first indication information is configured for the first cell or the first BWP, and the first indication information indicates the at least one second cell. Equivalently, for different cells, or for different BWPs of a cell, or for different BWPs of a cell, the cells that activate the aperiodic SRS simultaneously configured can be different. Thus, the flexibility of the configuration can be improved, and further the optimization performance of the network device can be enhanced.

[0093] In some embodiments of the present application, the first indication information is used to indicate a first triggering state, or the first triggering state in the aperiodic SRS triggering signaling on the first cell or the first bandwidth part BWP of the first cell, for triggering the SRS on the at least one second cell corresponding to the first triggering state.

[0094] In other words, the first indication information is configured for the first triggering state, and the first indication information indicates the at least one second cell. Equivalently, two different triggering states may be able to trigger the aperiodic SRS transmissions on different cells. For example, triggering state 1 can trigger the aperiodic SRS transmissions on cell 0 and cell 1, and triggering state 2 can trigger the aperiodic SRS transmissions on cell 0, cell 1, and cell 2.

[0095] For example, the first indication information involved in the embodiments of the present application can be configured for the terminal device. In other words, the first indication information is configured for the triggering state of the terminal device. That is, the correspondence between the first triggering state indicated by the first indication information and the at least one second cell applies to each cell of the terminal device, or to each BWP of each cell of the terminal device.

[0096] For example, the first indication information involved in the embodiments of the present application may be configured for a target cell group of a terminal device. In other words, the first indication information is configured for the triggering state on a target cell group of the terminal device. That is, the correspondence between the first triggering state indicated by the first indication information and at least one second cell applies to each cell of the target cell group, or applies to each BWP of each cell of the target cell group.

[0097] It should be noted that the target cell group may refer to a cell group in dual connection (DC). For example, a master cell group (MCG) or a secondary cell group (SCG). And at least one second cell or a cell group formed by at least one third cell involved in the present application can be understood as a cell group formed by one or more cells that can be triggered by a non-periodic SRS triggering signaling; for example, the first cell group, the second cell group, the cell group indicated by the first indication information, or the cell group indicated by the second information mentioned below.

[0098] Optionally, the first triggering state is a non-zero triggering state.

[0099] In some embodiments of the present application, the first indication information is used to indicate a non-periodic SRS triggering signaling on the first cell of the terminal device or the first cell of the target cell group (Cell Group) of the terminal device, for triggering SRS on the at least one second cell corresponding to the terminal device or the target cell group.

[0100] In other words, the first indication information is configured for the terminal device or a target cell group including the first cell, and the first indication information indicates the at least one second cell. Equivalently, for different cells, or different cells in the same target cell group, the cells that simultaneously activate the non-periodic SRS can be the same. Thus, the implementation and processing of the network device and the terminal device are simple, and the implementation complexity can be reduced.

[0101] In some embodiments of the present application, the first indication information is used to indicate the at least one second cell, where the non-periodic SRS triggering signaling on the first cell is used to trigger SRS on the at least one second cell.

[0102] In other words, the first indication information indicates the at least one second cell, so as to indicate that the non-periodic SRS triggering signaling on the first cell is used to trigger SRS on the at least one second cell.

[0103] In some embodiments of the present application, if the first indication information is used to indicate a first cell group, the at least one second cell is all active cells in the first cell group. Optionally, the maximum number of cells in the first cell group is 2, 4, 8, or 32.

[0104] In some embodiments of the present application, if the first indication information is used to indicate a first cell group, the at least one second cell is the first cell and all active cells in the first cell group. Optionally, the maximum number of cells in the first cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

[0105] In some embodiments of the present application, the first indication information indicates the first cell group by means of a bitmap.

[0106] For example, the MAC CE signaling includes at least one bit, each bit in the at least one bit corresponds to a cell in the first cell group, and the value on one bit in the at least one bit is used to indicate whether the cell corresponding to the one bit belongs to the first cell group.

[0107] For example, the MAC CE signaling further includes at least one of the following: the identifier of the first cell, the identifier of the first bandwidth part (BWP) of the first cell, or reserved bits.

[0108] For example, the method 200 may further include:

[0109] Receiving first RRC signaling and switching or determining the length of the at least one bit according to the first RRC signaling.

[0110] Next, in conjunction with Figures 3 to 12 , an exemplary description will be given of the MAC CE solution for carrying a bitmap provided in the embodiments of the present application.

[0111] As Figure 3 shown, the MAC CE signaling may include R, serving cell identifier (Serving Cell ID), bandwidth part identifier (Bandwidth Part ID, BWP ID), and C0 to C7.

[0112] Among them, R represents a reserved bit (Reserved bit). For example, its value can be 0.

[0113] The serving cell identifier may be the identifier of the first cell described above. In various embodiments of the application, the cell identifier may also be the cell number or index. No additional explanation will be made hereafter.

[0114] In other words, the serving cell identity can be used to indicate the cell for which the MAC CE described above applies. For example, the serving cell identity may occupy 5 bits.

[0115] The BWP ID can be the identity of the first BWP described above, that is, the identity of the first BWP on the first cell.

[0116] In other words, the BWP ID can be used to indicate the BWP for which this MAC CE applies. For example, the BWP ID may occupy 2 bits.

[0117] C0 to C7 are respectively the bits corresponding to the identities of the cells in the first cell group described above.

[0118] In other words, C0 to C7 respectively correspond to 8 cells. For example, C among C0 to C7 i corresponds to the cell with the serving cell index (ServCellIndex) of i. If the value of C i is 1, it means that the cell corresponding to C i with the serving cell index (ServCellIndex) of i belongs to the first cell group. For example, it means that the aperiodic SRS trigger signaling transmitted on the BWP indicated by the BWP ID of the cell indicated by the serving cell identity can trigger the aperiodic SRS transmission on the cell with ServCellIndex i; if the value of C i is 0, it means that the cell corresponding to C i with the serving cell index (ServCellIndex) of i does not belong to the first cell group. For example, it means that the aperiodic SRS trigger signaling transmitted on the BWP indicated by the BWP ID of the cell indicated by the serving cell identity does not trigger the aperiodic SRS transmission on the cell with ServCellIndex i.

[0119] Of course, in other alternative embodiments, if the value of C i is 0, it means that the cell corresponding to C i with the serving cell index (ServCellIndex) of i belongs to the first cell group. For example, it means that the aperiodic SRS trigger signaling transmitted on the BWP indicated by the BWP ID of the cell indicated by the serving cell identity can trigger the aperiodic SRS transmission on the cell with ServCellIndex i; if the value of C i is 1, it means that Ci The cell corresponding to the serving cell index (ServCellIndex) of i does not belong to the first cell group. For example, the aperiodic SRS triggering signaling transmitted on the BWP indicated by the BWP ID of the cell indicated by the serving cell identifier does not trigger aperiodic SRS transmission on the cell of ServCellIndex i.

[0120] It should be understood that Figure 3 This is only an example of the present application and should not be construed as a limitation of the present application.

[0121] For example, as Figure 4 shown, the BWP ID in the MAC CE signaling may also be optional information. That is, the MAC CE signaling may include 3 Rs, a serving cell identifier, and C0 to C7. Of course, as Figure 5 shown, C0 to C7 in the MAC CE signaling may change from the arrangement order from left to right to the arrangement order from right to left. Of course, as Figure 6 shown, the position of the 3 Rs may also change from in front of the serving cell to behind the serving cell identifier.

[0122] Again, for example, as Figure 7 shown, the length of the bitmap in the MAC CE signaling may also be 16 bits. That is, the MAC CE signaling may include 1 R, a serving cell identifier, a BWP ID, and C0 to C 15 . Of course, as Figure 8 shown, the BWP ID in the MAC CE signaling may also be optional information. That is, the MAC CE signaling may include 3 Rs, a serving cell identifier, and C0 to C 15 .

[0123] Again, for example, as Figure 9 shown, the length of the bitmap in the MAC CE signaling may also be 24 bits. That is, the MAC CE signaling may include 1 R, a serving cell identifier, a BWP ID, and C0 to C 23 . Of course, as Figure 10 shown, the BWP ID in the MAC CE signaling may also be optional information. That is, the MAC CE signaling may include 3 Rs, a serving cell identifier, and C0 to C 23 .

[0124] Again, for example, as Figure 11 shown, the length of the bitmap in the MAC CE signaling may also be 32 bits. That is, the MAC CE signaling may include 1 R, a serving cell identifier, a BWP ID, and C0 to C 31 . Of course, as Figure 12As shown, the BWP ID in the MAC CE signaling can also be optional information. That is, the MAC CE signaling may include 3 Rs, a serving cell identifier, and C0 to C 31 .

[0125] It should be noted that Figures 3 to 12 the format of the MAC CE signaling shown is only an example of this application and should not be construed as a limitation of this application.

[0126] For example, in other alternative embodiments, the MAC CE signaling may further include other information. Again, in other alternative embodiments, the positions of the respective information in the MAC CE signaling can be changed. For example, R can be placed at the end of the first line or at the front of the first line. Again, the arrangement order of the cells in the first cell group can be from smallest to largest or from largest to smallest according to the cell identifier. In other words, as long as it is ensured that the terminal device and the network device understand the arrangement order of the cells in the first cell group consistently, this application does not make specific limitations on the arrangement order of the cells in the first cell group.

[0127] In addition, the format of the MAC CE signaling can be determined based on the maximum value of the serving cell index (ServCellIndex) configured by the terminal device.

[0128] For example, the network device and / or the terminal device can switch or determine the length of the at least one bit according to the first RRC signaling described above, that is, switch or determine the format of the MAC CE signaling. For example, if the maximum value of the ServCellIndex configured by the terminal device is less than 8, a MAC CE with a bitmap length of 8 bit can be used; if the maximum value of the ServCellIndex configured by the terminal device is greater than or equal to 8 and less than 16, a MAC CE with a bitmap length of 16 bit can be used; if the maximum value of the ServCellIndex configured by the terminal device is greater than or equal to 16 and less than 24, a MAC CE with a bitmap length of 24 bit can be used; if the maximum value of the ServCellIndex configured by the terminal device is greater than or equal to 24, a MAC CE with a bitmap length of 32 bit can be used.

[0129] Of course, the division granularity of the length of the bitmap can also be greater than 8. For example, if the maximum value of the ServCellIndex configured by the terminal device is greater than or equal to 8 and less than 32, a MAC CE with a bitmap length of 16 bit or 32 bit can be used.

[0130] It should be noted that if the number of bits available for the bitmap in the foregoing MAC CE signaling is X, and the actual maximum value of ServCellIndex is less than X, then some of the X bits can be used as reserved bits. Optionally, the reserved bits may not be used for actual purposes. In other words, the X bits may include the reserved bits other than the bitmap for indicating the first cell group. The reserved bits may also be referred to as the remaining bits.

[0131] In some embodiments of the present application, the first indication information indicates the first cell group through a cell identifier.

[0132] For example, the MAC CE signaling includes the identifiers of each cell in the first cell group.

[0133] For example, the MAC CE signaling further includes at least one of the following:

[0134] The identifier of the first cell;

[0135] The identifier of the first bandwidth part BWP of the first cell;

[0136] First information for indicating the number of cells in the first cell group; or

[0137] Reserved bits.

[0138] Next, in combination with Figures 13 to 17 , an exemplary description will be given of the MAC CE scheme for carrying the cell identifier provided in the embodiments of the present application.

[0139] As Figure 13 shown, the MAC CE signaling may include 3 Rs and serving cell identifiers (Serving Cell ID) 0 to K.

[0140] Among them, R represents a reserved bit (reseved bit). For example, its value can be 0.

[0141] Serving cell identifier 0 represents the identifier of the first cell described above.

[0142] In other words, serving cell identifier 0 can be used to indicate which cell the foregoing MAC CE applies to (indicatesthe identity of the Serving Cell for which the MAC CE applies). For example, the serving cell identifier 0 may occupy 5 bits.

[0143] Serving cell identifiers 1 to K represent the identifiers of the cells in the first cell group described above.

[0144] In other words, for the serving cell identifier i (i >= 1) among the serving cell identifiers 1 to K, the serving cell identifier i can be used to indicate a serving cell index X (ServCellIndex X), indicating that the aperiodic SRS trigger signaling transmitted on the cell indicated by the serving cell identifier 0 can trigger the aperiodic SRS transmission on the cell of ServCellIndex X. For example, the serving cell identifier i can occupy 5 bits. Of course, i can be equal to X or different from X, and the present application does not make specific limitations on this.

[0145] It should be noted that the present application does not limit the specific use of the bits that are not marked or described. For example, it can be used for indication or as a Reserved bit.

[0146] It should be understood that Figure 13 This is only an example of the present application and should not be construed as a limitation of the present application.

[0147] For example, as Figure 14 shown, the MAC CE signaling may further include a BWP ID. That is, the MAC CE signaling may include the serving cell identifier (Serving Cell ID) 0 and the BWP ID serving cell identifiers 1 to K.

[0148] The BWP ID can be the identifier of the first BWP described above, that is, the identifier of the first BWP on the first cell.

[0149] In other words, the BWP ID can be used to indicate for which BWP this MAC CE applies (indicates a DL BWP for which the MAC CE applies). For example, the BWP ID can occupy 2 bits.

[0150] Based on this, for the serving cell identifier i (i >= 1) among the serving cell identifiers 1 to K, the serving cell identifier i can be used to indicate a serving cell index X (ServCellIndex X), indicating that the aperiodic SRS trigger signaling transmitted on the BWP indicated by the BWP ID of the cell indicated by the serving cell identifier 0 can trigger the aperiodic SRS transmission on the cell of ServCellIndex X. For example, the serving cell identifier i can occupy 5 bits. Of course, i can be equal to X or different from X, and the present application does not make specific limitations on this.

[0151] Again, for example, as Figure 15 shown, the MAC CE signaling may further include first information, such as some or all of X0, X1, X2. That is, the MAC CE signaling may include the first information and the BWP ID serving cell identifiers 0 to K.

[0152] Among them, some or all of the bits in X0, X1, and X2 are used to indicate the number K of Serving cell IDs.

[0153] For another example, as Figure 16 shown, the MAC CE signaling may further include the first information and the BWP ID, such as X0, X1, and X2. That is, the MAC CE signaling may include Serving cell ID 0, the first information, and BWP ID Serving cell IDs 1 to K.

[0154] For another example, as Figure 17 shown, the bits occupied by the first information may be greater than 3. For example, some or all of X0, X1, X2, X3, and X4. In other words, some or all of the bits in X0, X1, X2, X3, and X4 may be used to indicate the number K of Serving cell IDs.

[0155] It should be noted that Figures 13 to 17 the format of the MAC CE signaling shown is only an example of this application and should not be construed as a limitation to this application.

[0156] For example, in other alternative embodiments, the MAC CE signaling may further include other information. For another example, in other alternative embodiments, the positions of the various pieces of information in the MAC CE signaling may be changed. For example, R may be placed at the end of the first row or at the front of the first row. For another example, the arrangement order of the cells in the first cell group may be from top to bottom according to the cell ID or from bottom to top. In other words, as long as it is ensured that the terminal device and the network device understand the arrangement order of the cells in the first cell group consistently, this application does not make specific limitations on the arrangement order of the cells in the first cell group.

[0157] It should also be understood that Figures 3 to 17 the MAC CE signaling shown includes the identifier of the first cell described above. In the case where the first indication information is configured for the terminal device or the cell group including the first cell, the MAC CE signaling may not include the identifier of the first cell or the identifier of the first BWP.

[0158] For example, as Figure 18 shown, the MAC CE signaling includes C0 to C7.

[0159] Of course, as Figure 19 shown, the arrangement order of C0 to C7 in the MAC CE signaling may be changed from the left-to-right arrangement order to the right-to-left arrangement order.

[0160] For another example, as Figure 20 shown, the MAC CE signaling includes C0 to C15 。

[0161] For another example, as Figure 21 shown, the MAC CE signaling includes C0 to C 23 。

[0162] For another example, as Figure 22 shown, the MAC CE signaling includes C0 to C 31 。

[0163] For another example, as Figure 23 shown, the MAC CE signaling includes service identifiers 1 to K.

[0164] For another example, as Figure 22 shown, the MAC CE signaling includes first information and service identifiers 1 to K. For example, the first information may be some or all of X0, X1, X2.

[0165] For another example, as Figure 22 shown, the MAC CE signaling includes first information and service identifiers 1 to K. For example, the first information may be some or all of X0, X1, X2, X3, X4.

[0166] In some embodiments of the present application, the method 200 may further include:

[0167] Receiving a second RRC signaling for configuring at least one cell, where the at least one cell includes the first cell and the at least one second cell.

[0168] For example, the terminal device receives the second RRC signaling sent by the network device.

[0169] In other words, the network device sends the second RRC signaling to the terminal device to configure the at least one cell.

[0170] It should be noted that for SRS, transmission needs to be based on an SRS resource set (SRS-ResourceSet) or an SRS resource (SRS-Resource). In other words, the SRS sent by the terminal device can be the SRS corresponding to the SRS resource set or the SRS resource. The slot offset of the SRS corresponding to the SRS resource set is configured for the SRS resource set, and the slot offset of the SRS corresponding to the SRS resource is configured for the SRS resource. The SRS corresponding to the SRS resource set introduced above can also be referred to as a normal SRS. Optionally, the usage domain in the SRS resource set can be configured as one of beam management, codebook, non-codebook, and antenna switching. The SRS corresponding to the SRS resource can also be the SRS for positioning, configured through the RRC signaling SRS-PosResource-r16, and the corresponding SRS resource set is configured through the RRC signaling SRS-PosResourceSet-r16. For simplicity of description later, only the normal SRS is used as an example in some places, but the solution also applies to the positioning SRS.

[0171] In some embodiments of the present application, the SRS resource sets of different cells in the first cell and the at least one second cell are configured through different SRS resource set SRS-ResourceSet signaling, and the SRS resources in different SRS resource sets in the SRS resource set of the first cell and the SRS resource sets of the at least one second cell are configured through different SRS resource SRS-Resource signaling.

[0172] It should be noted that the SRS resource sets involved in various embodiments of the present application are all aperiodic SRS resource sets, and the SRS resources are all aperiodic SRS resources.

[0173] For example, the SRS resource set SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured through the SRS configuration SRS-Config.

[0174] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one second cell, they are configured through the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource set cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one trigger state among the multiple non-zero trigger states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger state among the multiple non-zero trigger states.

[0175] For example, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

[0176] For example, N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

[0177] In some embodiments of the present application, at least one time slot offset is configured for the SRS resource set of each second cell in the at least one second cell; the method 200 may further include:

[0178] Determining the second time slot based on the first time slot and the time slot offset k corresponding to the SRS resource set of one second cell in the at least one second cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the one second cell is the SRS resource set corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

[0179] Transmitting the SRS corresponding to the SRS resource set of the one second cell on the second time slot of the one second cell.

[0180] In some embodiments of the present application, multiple time slot offsets are configured for the SRS resource set of each second cell in the at least one second cell, and the time slot offset k corresponding to the SRS resource set of the one second cell is the activated time slot offset among the multiple time slot offsets.

[0181] For example, each second cell in the at least one second cell has an SRS resource group configured with a time slot offset, and the time slot offset is the time slot offset k.

[0182] For another example, the second time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0183] In some embodiments of the present application, the SRS resource groups of different cells in the first cell and the at least one second cell are configured by different SRS-Pos resource group version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource groups in the SRS resource group of the first cell and the SRS resource groups of the at least one second cell are configured by different SRS Pos resources version 16 SRS-PosResource-r16 signaling.

[0184] It should be noted that the SRS resource groups involved in the embodiments of the present application are all aperiodic SRS resource groups, and the SRS resources are all aperiodic SRS resources.

[0185] For example, the SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS through SRS-Config.

[0186] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one second cell, they are configured by the aperiodic SRS resource trigger list version 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

[0187] For example, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

[0188] For example, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

[0189] In some embodiments of the present application, the SRS resources in the SRS resource group of each second cell in the at least one second cell are configured with at least one time slot offset; the method 200 may further include:

[0190] Determine a third time slot based on the time slot offset k' corresponding to the SRS resource in the SRS resource group of the first time slot and a second cell among the at least one second cell, where the first time slot is the time slot where the aperiodic SRS triggering signaling is located, the SRS resource group of the one second cell is the SRS resource group corresponding to a first value, and the first value is the value of the triggering state in the aperiodic SRS triggering signaling;

[0191] On the third time slot of the one second cell, transmit the SRS corresponding to the SRS resource in the SRS resource group of the one second cell.

[0192] In some embodiments of the present application, each SRS resource group of each second cell among the at least one second cell is configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resource in the SRS resource group of the one second cell is the activated time slot offset among the multiple time slot offsets.

[0193] For example, each SRS resource group of each second cell among the at least one second cell is configured with one time slot offset, and the one time slot offset is the time slot offset k'.

[0194] For another example, the third time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0195] It should be noted that the valid time slot can also be understood as a time slot available for uplink transmission. The time slot available for uplink transmission can be understood as a time slot only used for uplink transmission, that is, always used for uplink transmission, or can be understood as a time slot containing an uplink symbol, or can be understood as a time slot containing a flexible symbol, or can be understood as a flexible time slot, or can be understood as a time slot that is occasionally not available for uplink transmission, for example, a time slot occasionally used for downlink transmission. Optionally, whether the time slot available for uplink transmission in the present application can actually be used for uplink transmission depends on whether there is a collision with other signal transmissions.

[0196] The technical solution of the method 200 will be described below with specific embodiments. It should be noted that in the subsequent embodiments, the steps are mainly for describing the relatively related functional points. In actual implementation, some steps can be omitted, or the relative order of different steps can be changed, or the relative order of different sub-processes in different steps can be changed, which is not limited herein.

[0197] Embodiment 1:

[0198] In this embodiment, the first indication information is configured for the first cell or the first BWP.

[0199] Step 1:

[0200] The terminal device receives the cell configuration information sent by the network device through RRC signaling.

[0201] For example, Carrier Aggregation (CA) configuration information. There are A cells configured. For each of one or more (denoted as B, B <= A) of the A cells (in some cases, some cells may not be configured with corresponding aperiodic SRS, so it is written as one or more of A), the network device carries SRS configuration information through RRC signaling, configures one or more SRS resource groups, and each SRS resource group contains one or more SRS resources. The following description is for a certain cell among the B cells, and the configurations on different cells can be independent. The following takes cell Z as an example for description.

[0202] Optionally, the SRS resource group on cell Z is configured through the RRC signaling SRS-ResourceSet, and the SRS resource is configured through the RRC signaling SRS-Resource.

[0203] Optionally, the usage field in the SRS-ResourceSet signaling can be configured as one of beamManagement, codebook, nonCodebook, antennaSwitching.

[0204] Optionally, the SRS resource group on cell Z is configured with multiple (denoted as M, M >= 1) trigger states. Optionally, each trigger state corresponds to a value in the SRS request field in the aperiodic SRS trigger signaling, that is, a code point. For example, the values of the trigger states in Table 1.

[0205] Optionally, the above multiple trigger states are configured through aperiodicSRS-ResourceTrigger and / or aperiodicSRS-ResourceTriggerList in the SRS-ResourceSet IE, where aperiodicSRS-ResourceTrigger configures 1 value, and aperiodicSRS-ResourceTriggerList configures 1 or more values.

[0206] Optionally, the value range of aperiodicSRS-ResourceTrigger is an integer from 1 to N - 1.

[0207] Optionally, the value of each element in aperiodicSRS-ResourceTriggerList is an integer from 1 to N-1.

[0208] For example, N can be equal to the number of aperiodic SRS trigger states (maxNrofSRS-TriggerStates), with a value of 4.

[0209] For another example, the value of N is determined to be 4 or a larger value (e.g., 8 or 16) according to the configuration information sent by the network device; of course, in other alternative embodiments, other names may be used. By increasing the number of states corresponding to the aperiodic SRS trigger signaling, the flexibility of DCI triggering aperiodic SRS can be improved, the system performance can be enhanced, so that cross-cell triggering of aperiodic SRS can be achieved, the DCI overhead can be reduced, and the system flexibility can be increased. Optionally, the configuration information is indicated to the terminal device through RRC signaling or MAC CE signaling. Optionally, the terminal device notifies the network device through the terminal device capability reporting information that it can support more aperiodic SRS trigger states (Maximum number of SRS trigger states), that is, N is greater than 4, so that the network device determines N based on the capabilities reported by the terminal device.

[0210] Optionally, the RRC signaling is configured through SRS-Config.

[0211] Step 2:

[0212] For cell Z or BWP Y of cell Z, the network device indicates through the first indication information which cells' SRS can be triggered by the aperiodic SRS trigger signaling transmitted on cell Z or BWP Y of cell Z.

[0213] Optionally, when the network device does not indicate relevant information through the above signaling, the aperiodic SRS trigger signaling sent on cell Z or BWP Y of cell Z only triggers the SRS sent on the uplink corresponding to cell Z. Equivalently, when the terminal device does not receive the first indication information, the original triggering method is adopted.

[0214] Optionally, before sending the first indication information, the network device can indicate to the terminal device through RRC signaling to use the first indication information to trigger aperiodic SRS.

[0215] Optionally, before sending the first indication information, the terminal device can report information through UE capability to indicate that the terminal device supports triggering aperiodic SRS through the first indication information.

[0216] Option 1:

[0217] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. The aperiodic SRS triggering signaling sent on cell Z or BWP Y of cell Z triggers the terminal device to perform corresponding aperiodic SRS transmissions on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRSs are configured for the corresponding active cells, it is possible to more flexibly control which cells' aperiodic SRS transmissions can be triggered by an aperiodic SRS triggering signaling, rather than triggering aperiodic SRS transmissions on all active cells. This can not only improve the flexibility of the network device to trigger SRSs, but also improve system performance.

[0218] Optionally, in the above MAC CE signaling, a set of cells is indicated by a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0219] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0220] Optionally, the above MAC CE signaling indicates a set of cells by cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0221] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0222] Option 2:

[0223] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. The aperiodic SRS triggering signaling sent on cell Z or BWP Y of cell Z triggers the terminal device to perform corresponding aperiodic SRS transmissions on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRSs are configured for the corresponding active cells. In addition, it triggers the aperiodic SRS transmission corresponding to cell Z or BWP Y of cell Z. Compared with Option 1, for Option 1, only when the set of cells indicated by the MAC CE signaling includes cell Z, the aperiodic SRS triggering signaling on cell Z can trigger the aperiodic SRS transmission on cell Z; for Option 2, on the basis of Option 1, regardless of whether the set of cells indicated by the MAC CE signaling includes cell Z, the aperiodic SRS triggering signaling on cell Z can trigger the aperiodic SRS transmission on cell Z; equivalently, the MAC CE signaling can reduce the indication of cell Z, thereby reducing resource overhead.

[0224] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit has a specified value (e.g., 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0225] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0226] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0227] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling contains the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0228] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0229] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0230] Step 3:

[0231] The terminal device receives an aperiodic SRS trigger signaling (denoted as the first signaling) on cell Z or BWP Y of cell Z. The trigger state corresponding to the first signaling is greater than 0 (its value is denoted as value, simply referred to as the first value), that is, a non-zero trigger state. Then, the corresponding aperiodic SRS is transmitted on the previously determined cell.

[0232] For each of the above determined cells (denoted as Z'), an aperiodic SRS corresponding to the SRS resource group with the value of the first signaling value is transmitted. Since the trigger state is configured in the aperiodic SRS resource group on Z', there will be an aperiodic SRS resource group corresponding to the value of the first signaling value on each Z'. The corresponding SRS resource group is configured with 1 slot offset or multiple slot offsets.

[0233] Optionally, the terminal device receives an aperiodic SRS trigger signaling (e.g., DCI) on slot n of cell Z. The terminal device determines the slot n' corresponding to cell Z' for transmitting the SRS resource according to the slot offset corresponding to the SRS resource group where the SRS resource is located.

[0234] Optionally, according to the slot offset k corresponding to the SRS resource set (in the case where 1 slot offset is configured for the SRS resource set, or when 1 slot offset is activated), or the slot offset k corresponding to the SRS resource set activated by MAC signaling (in the case where 1 or more slot offsets are configured for the SRS resource set), or the slot offset k corresponding to the SRS resource set indicated by the aperiodic SRS trigger signaling (in the case where multiple slot offsets are configured for the SRS resource set), determine the transmission slot of the SRS, that is, slot n'.

[0235] For example, the slot n' can be determined using the following formula:

[0236]

[0237] where the u SRS represents the subcarrier spacing configuration corresponding to the SRS, and the u PDCCH represents the subcarrier spacing configuration corresponding to the physical downlink control channel PDCCH used by the trigger signaling. The k represents the slot offset corresponding to the SRS resource set, and the n represents the first slot.

[0238] Again, for example, slot n' can be determined based on the following formula:

[0239]

[0240] where the u SRS represents the subcarrier spacing configuration corresponding to the SRS, and the u PDCCH represents the subcarrier spacing configuration corresponding to the physical downlink control channel PDCCH used by the trigger signaling. The and the u offset，PDCCH are respectively the and u offset for the slot offset for carrier aggregation CA for receiving the physical downlink control channel PDCCH, which are determined by the upper layer configuration. The and the u offset，SRS are respectively the and u offset for the slot offset for carrier aggregation CA for transmitting the SRS, which are determined by the upper layer configuration. The k represents the slot offset corresponding to the SRS resource set, and the n represents the first slot. In addition, and u offset can be relevant parameters for the slot offset for CA specified in the communication standard.

[0241] Optionally, according to the time slot offset k corresponding to the SRS resource set (when one time slot offset is configured for the SRS resource set, or when one time slot offset is activated), or the time slot offset k corresponding to the SRS resource set activated by MAC signaling (when one or more time slot offsets are configured for the SRS resource set), or the time slot offset k corresponding to the SRS resource set indicated by the aperiodic SRS trigger signaling (when multiple time slot offsets are configured for the SRS resource set), the k-th or (k + 1)-th valid time slot on cell Z' after the time slot where the aperiodic SRS trigger signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, reducing the probability of congestion in response to the aperiodic SRS trigger signaling. Optionally, the valid time slot is a time slot that can transmit the SRS.

[0242] Embodiment 2:

[0243] In this embodiment, the first indication information is configured for the aperiodic SRS trigger state.

[0244] Step 1:

[0245] The terminal device receives the cell configuration information sent by the network device through RRC signaling.

[0246] It should be understood that Step 1 in Embodiment 2 can refer to Step 1 in Embodiment 1. To avoid repetition, it will not be elaborated here.

[0247] Step 2:

[0248] For cell Z, or BWP Y of cell Z, the network device indicates through the first indication information that the aperiodic SRS trigger state S on cell Z or BWP Y of cell Z can trigger the SRS on one or more cells. When the aperiodic SRS trigger signaling on cell Z or BWP Y of cell Z corresponds to the aperiodic SRS trigger state S, the SRS on the one or more cells is triggered.

[0249] Optionally, the above aperiodic SRS trigger state is a non-zero state.

[0250] Optionally, corresponding different cells can be configured for different aperiodic SRS trigger states.

[0251] Optionally, when the network device does not indicate relevant information through the above signaling, the trigger state S corresponding to the aperiodic SRS trigger signaling sent on cell Z only triggers the SRS sent on the uplink corresponding to cell Z. Equivalently, when the terminal device does not receive the first indication information, the original trigger method is adopted.

[0252] Optionally, before sending the first indication information, the network device may indicate to the terminal device, via RRC signaling, to use the first indication information to trigger an aperiodic SRS.

[0253] Optionally, before sending the first indication information, the terminal device may report UE capability information to indicate that the terminal device supports triggering an aperiodic SRS via the first indication information.

[0254] Option 1:

[0255] For a non-zero aperiodic SRS trigger state S, the network device indicates a set of cells via MAC CE signaling. The set of cells includes one or more cells. For the aperiodic SRS trigger signaling sent on cell Z, if this non-zero aperiodic trigger signaling corresponds to the trigger state S, it triggers the terminal device to perform corresponding aperiodic SRS transmission on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRS is configured for the corresponding active cells, it is possible to more flexibly control which cells' aperiodic SRS transmissions can be triggered by an aperiodic SRS trigger signaling, rather than triggering aperiodic SRS transmissions on all active cells. This can not only improve the flexibility of the network device to trigger SRS, but also improve system performance.

[0256] Optionally, the above MAC CE signaling indicates a set of cells via a bitmap. For example, if the corresponding bit is a specified value (e.g., 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0257] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0258] Optionally, the above MAC CE signaling indicates a set of cells via cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0259] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0260] Option 2:

[0261] For a non-zero and aperiodic SRS trigger state S, the network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. For the aperiodic SRS trigger signaling sent by the network device on cell Z, if this non-zero aperiodic trigger signaling corresponds to the trigger state S, it triggers the terminal device to perform corresponding aperiodic SRS transmissions on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRSs are configured for the corresponding active cells. In addition, it triggers the aperiodic SRS transmission corresponding to cell Z. Compared with Option 1, for Option 1, the aperiodic SRS trigger signaling on cell Z can trigger the aperiodic SRS transmission on cell Z only when cell Z is included in the set of cells indicated by the MAC CE signaling; based on Option 1, for Option 2, regardless of whether cell Z is included in the set of cells indicated by the MAC CE signaling, the aperiodic SRS trigger signaling on cell Z can trigger the aperiodic SRS transmission on cell Z; equivalently, the MAC CE signaling can reduce the indication of cell Z, thereby reducing the resource overhead.

[0262] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce the signaling overhead.

[0263] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0264] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0265] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce the signaling overhead.

[0266] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0267] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0268] Step 3:

[0269] The terminal device receives an aperiodic SRS trigger signaling (denoted as the first signaling) on cell Z. The trigger state S corresponding to the first signaling > 0 (its value is denoted as value, simply referred to as the first value), that is, a non-zero trigger state. Then, it sends the corresponding aperiodic SRS on the previously determined cells.

[0270] For the triggering state S corresponding to the first signaling, determine that on each of the above corresponding cells (denoted as Z'), an aperiodic SRS corresponding to the SRS resource group corresponding to the value of the first signaling is sent. Since the triggering state is configured in the aperiodic SRS resource group on Z', there will be an aperiodic SRS resource group corresponding to the value of the first signaling on each Z'. The corresponding SRS resource group is configured with 1 slot offset or multiple slot offsets.

[0271] Optionally, the terminal device receives an aperiodic SRS triggering signaling (such as DCI) on slot n of cell Z. The terminal device determines to transmit the SRS resource on slot n' corresponding to cell Z' according to the slot offset corresponding to the SRS resource group where the SRS resource is located.

[0272] Optionally, according to the slot offset offset corresponding to the SRS resource group (the value is represented by k, and this method corresponds to the case where the SRS resource group is configured with 1 slot offset or activates 1 slot offset), or the slot offset k corresponding to the SRS resource group activated by the MAC signaling (in the case where the SRS resource group is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource group indicated by the aperiodic SRS triggering signaling (in the case where the SRS resource group is configured with multiple slot offsets), the transmission slot of the SRS is determined, that is, slot n'.

[0273] For example, the slot n' can be determined with reference to the formula involved in Embodiment 1.

[0274] Optionally, according to the slot offset k corresponding to the SRS resource group (in the case where the SRS resource group is configured with 1 slot offset or 1 slot offset is activated), or the slot offset k corresponding to the SRS resource group activated by the MAC signaling (in the case where the SRS resource group is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource group indicated by the aperiodic SRS triggering signaling (in the case where the SRS resource group is configured with multiple slot offsets), the kth or (k + 1)th valid slot on cell Z' after the slot where the aperiodic SRS triggering signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, and the probability of congestion in response to the aperiodic SRS triggering signaling can be reduced. Optionally, the valid slot is a slot on which the SRS can be transmitted.

[0275] Embodiment 3:

[0276] In this embodiment, the first indication information is configured for the terminal device or a cell group including the first cell, that is, the target cell group involved above.

[0277] Step 1:

[0278] The terminal device receives the cell configuration information sent by the network device through RRC signaling.

[0279] It should be understood that Step 1 in Embodiment 3 can refer to Step 1 in Embodiment 1. To avoid repetition, it will not be elaborated here.

[0280] Step 2:

[0281] For the terminal device or for a target cell group, the network device uses the first indication information to indicate which cells' SRS on the terminal device can be triggered by the aperiodic SRS trigger signaling, or which cells' SRS corresponding to the target cell group can be triggered. In Embodiment 1, the aperiodic SRS trigger signaling sent on Cell Z is used to indicate which cells' aperiodic SRS transmissions can be triggered. Compared with Embodiment 1, the network device and the terminal device are simple to implement and process, reducing the implementation complexity.

[0282] Optionally, when the network device does not indicate the relevant information through the above signaling, the aperiodic SRS trigger signaling sent on Cell Z only triggers the SRS sent on the uplink corresponding to Cell Z. Equivalently, when the terminal device does not receive the first indication information, the original triggering method is adopted.

[0283] Optionally, before sending the first indication information, the network device can use RRC signaling to instruct the terminal device to use the first indication information to trigger aperiodic SRS.

[0284] Optionally, before sending the first indication information, the terminal device can report UE capability information to indicate that the terminal device supports triggering aperiodic SRS through the first indication information.

[0285] Option 1:

[0286] The network device uses MAC CE signaling to indicate a group of cells, where the group of cells contains one or more cells. Then, on Cell Z of the terminal device or on any Cell Z in the cell group, the aperiodic SRS trigger signaling triggers the aperiodic SRS transmissions corresponding to all active cells in the group of cells. For example, in the case where the corresponding aperiodic SRS is configured for the active cells. It can more flexibly control which cells' aperiodic SRS transmissions can be triggered by an aperiodic SRS trigger signaling, rather than triggering the aperiodic SRS transmissions on all active cells, which can not only improve the flexibility of the network device to trigger SRS, but also improve the system performance.

[0287] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit has a specified value (e.g., 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0288] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0289] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling contains the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0290] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0291] Option 2:

[0292] The network device indicates a set of cells through MAC CE signaling. The set of cells contains one or more cells. Then, on terminal device cell Z, or on any cell Z in the cell group, the aperiodic SRS trigger signaling sent triggers the terminal device to perform aperiodic SRS transmission on all active cells in the set of cells. For example, when corresponding aperiodic SRS is configured for the corresponding active cells. In addition, it triggers the aperiodic SRS transmission corresponding to cell Z. Compared with Option 1, for Option 1, only when the set of cells indicated by the MAC CE signaling includes cell Z, the aperiodic SRS trigger signaling on cell Z can trigger the aperiodic SRS transmission on cell Z; based on Option 1, Option 2 can trigger the aperiodic SRS transmission on cell Z regardless of whether the set of cells indicated by the MAC CE signaling includes cell Z; equivalently, the MAC CE signaling can reduce the indication of cell Z, thereby reducing resource overhead.

[0293] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit has a specified value (e.g., 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0294] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0295] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0296] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, signaling overhead can be reduced.

[0297] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0298] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0299] Step 3:

[0300] If the terminal device receives an aperiodic SRS trigger signaling (denoted as the first signaling) on cell Z, and the value corresponding to the first signaling is greater than 0 (the value is denoted as value), then the corresponding aperiodic SRS is sent on the previously determined cell.

[0301] For each of the above determined cells (denoted as Z'), the aperiodic SRS corresponding to the SRS resource group with the value value of the first signaling is sent. Since the trigger state is configured in the aperiodic SRS resource group on Z', there will be an aperiodic SRS resource group corresponding to the value value of the first signaling on each Z'. The corresponding SRS resource group is configured with 1 slot offset or multiple slot offsets.

[0302] Optionally, if the terminal device receives an aperiodic SRS trigger signaling (such as DCI) on slot n of cell Z, the terminal device determines to transmit the SRS resource on slot n' corresponding to cell Z according to the slot offset corresponding to the SRS resource group where the SRS resource is located.

[0303] Optionally, according to the slot offset k corresponding to the SRS resource group (in the case where the SRS resource group is configured with 1 slot offset, or when 1 slot offset is activated), or the slot offset k corresponding to the SRS resource group activated by the MAC signaling (in the case where the SRS resource group is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource group indicated by the aperiodic SRS trigger signaling (in the case where the SRS resource group is configured with multiple slot offsets), the transmission slot of the SRS is determined, that is, slot n'.

[0304] For example, the slot n' can be determined with reference to the formula involved in Embodiment 1.

[0305] Optionally, according to the slot offset k corresponding to the SRS resource set (when 1 slot offset is configured for the SRS resource set, or when 1 slot offset is activated), or the slot offset k corresponding to the SRS resource set activated by MAC signaling (when 1 or more slot offsets are configured for the SRS resource set), or the slot offset k corresponding to the SRS resource set indicated by the aperiodic SRS trigger signaling (when multiple slot offsets are configured for the SRS resource set), the k-th or (k + 1)-th valid slot on cell Z' after the slot where the aperiodic SRS trigger signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, reducing the probability of congestion in response to the aperiodic SRS trigger signaling. Optionally, the valid slot is a slot that can transmit the SRS.

[0306] The solution of using the first indication information to trigger the SRS corresponding to the SRS resource set is described above in combination with Embodiments 1 to 3. Below, the use of the first indication information to trigger the SRS corresponding to the SRS is described in combination with Embodiments 4 to 6.

[0307] Embodiment 4:

[0308] In this embodiment, the first indication information is configured for the first cell or the first BWP.

[0309] Step 1:

[0310] The terminal device receives the cell configuration information sent by the network device through RRC signaling.

[0311] For example, carrier aggregation (CA) configuration information. There are A cells configured. For each of 1 or more (denoted as B, B <= A) of the A cells (in some cases, some cells may not be configured with corresponding aperiodic SRS, so it is written as 1 or more of A), the network device carries SRS configuration information through RRC signaling, configuring 1 or more SRS resource sets, and each SRS resource set contains 1 or more SRS resources. The following description is for a certain cell among the B cells, and the configurations on different cells can be independent. The following takes cell Z as an example for description.

[0312] Optionally, the SRS resource set is configured through the RRC signaling SRS-PosResourceSet-r16, and the SRS resource is configured through the RRC signaling SRS-PosResource-r16.

[0313] Optionally, multiple (denoted as M, M >= 1) trigger states are configured for at least one of the SRS resource sets (denoted as Set X). Optionally, each trigger state corresponds to a value in the SRS request field of the aperiodic SRS trigger signaling, that is, a code point. For example, the values of the trigger states in Table 1.

[0314] Optionally, the multiple trigger states are configured through aperiodicSRS-ResourceTriggerList-r16 in SRS-PosResourceSet-r16.

[0315] Optionally, the value of each element in aperiodicSRS-ResourceTriggerList-r16 is an integer from 1 to N - 1.

[0316] For example, N can be equal to the number of aperiodic SRS trigger states (maxNrofSRS-TriggerStates), with a value of 4.

[0317] Again, according to the configuration information sent by the network device, the value of N is determined to be 4 or a larger value (for example, 8 or 16); of course, in other alternative embodiments, other names may be used. By increasing the number of states corresponding to the aperiodic SRS trigger signaling, the flexibility of DCI-triggered aperiodic SRS can be improved, the system performance can be enhanced, so that cross-cell triggering of aperiodic SRS can be achieved, the DCI overhead can be reduced, and the system flexibility can be increased.

[0318] Optionally, the configuration information is indicated to the terminal device through RRC signaling or MAC CE signaling.

[0319] Optionally, the terminal device notifies the network device through the terminal device capability reporting information that it can support more aperiodic SRS trigger states (Maximum number of SRS trigger states), that is, N is greater than 4, so that the network device determines N based on the capabilities reported by the terminal device.

[0320] Optionally, the RRC signaling is configured through SRS-Config

[0321] Step 2:

[0322] For cell Z, or BWP Y of cell Z, the network device indicates through the first indication information which cells' SRS can be triggered by the aperiodic SRS trigger signaling transmitted on cell Z or BWP Y of cell Z.

[0323] Optionally, when the network device does not indicate relevant information through the above signaling, the aperiodic SRS trigger signaling sent on cell Z or BWP Y of cell Z only triggers the SRS sent on the corresponding uplink of cell Z. Equivalently, when the terminal device does not receive the first indication information, the original triggering method is adopted.

[0324] Optionally, before sending the first indication information, the network device may indicate to the terminal device to use the first indication information to trigger aperiodic SRS through RRC signaling.

[0325] Optionally, before sending the first indication information, the terminal device may report information through UE capability to indicate that the terminal device supports triggering aperiodic SRS through the first indication information.

[0326] Option 1:

[0327] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. The aperiodic SRS trigger signaling sent on cell Z or BWP Y of cell Z triggers the terminal device to perform aperiodic SRS transmission corresponding to all active cells in the set of cells. For example, in the case where corresponding aperiodic SRS is configured for the corresponding active cells. It is possible to more flexibly control which cells' aperiodic SRS transmissions can be triggered by an aperiodic SRS trigger signaling, rather than triggering aperiodic SRS transmissions on all active cells, which can not only improve the flexibility of the network device to trigger SRS, but also improve system performance.

[0328] Optionally, in the above MAC CE signaling, a set of cells is indicated through a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0329] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0330] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0331] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0332] Option 2:

[0333] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. The aperiodic SRS triggering signaling sent on cell Z or BWP Y of cell Z triggers the terminal device to perform corresponding aperiodic SRS transmissions on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRSs are configured for the corresponding active cells. In addition, it triggers the aperiodic SRS transmission corresponding to cell Z or BWP Y of cell Z. Compared with Option 1, for Option 1, only when the set of cells indicated by the MAC CE signaling includes cell Z, the aperiodic SRS triggering signaling on cell Z can trigger the aperiodic SRS transmission on cell Z; based on Option 1, Option 2 enables the aperiodic SRS triggering signaling on cell Z to trigger the aperiodic SRS transmission on cell Z regardless of whether the set of cells indicated by the MAC CE signaling includes cell Z; equivalently, the MAC CE signaling can reduce the indication of cell Z, thereby reducing the resource overhead.

[0334] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit has a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce the signaling overhead.

[0335] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0336] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0337] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce the signaling overhead.

[0338] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0339] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0340] Step 3:

[0341] The terminal device receives an aperiodic SRS triggering signaling (denoted as the first signaling) on cell Z. The triggering state corresponding to the first signaling is greater than 0 (its value is denoted as value, simply referred to as the first value), that is, a non-zero triggering state. Then, the terminal device sends the corresponding aperiodic SRS on the previously determined cells.

[0342] For each of the above-determined cells (denoted as Z'), send the aperiodic SRS corresponding to the SRS resource set corresponding to the value of the first signaling. Since the trigger state is configured in the aperiodic SRS resource set on Z', there will be an aperiodic SRS resource set corresponding to the value of the first signaling on each Z'. The corresponding SRS resource is configured with 1 slot offset or multiple slot offsets.

[0343] Optionally, the terminal device receives an aperiodic SRS trigger signaling (such as DCI) on slot n of cell Z, and the terminal device determines to transmit the SRS resource on slot n' corresponding to cell Z' according to the slot offset corresponding to the SRS resource.

[0344] Optionally, according to the slot offset k corresponding to the SRS resource (in the case where the SRS resource is configured with 1 slot offset, or when one slot offset is activated), or the slot offset k corresponding to the SRS resource activated by the MAC signaling (in the case where the SRS resource is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (in the case where the SRS resource is configured with multiple slot offsets), determine the transmission slot of the SRS, that is, slot n'.

[0345] For example, the slot n' can be determined with reference to the formula involved in Embodiment 1.

[0346] Optionally, according to the slot offset k corresponding to the SRS resource (in the case where the SRS resource is configured with 1 slot offset, or when one slot offset is activated), or the slot offset k corresponding to the SRS resource activated by the MAC signaling (in the case where the SRS resource is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (in the case where the SRS resource is configured with multiple slot offsets), the kth or (k + 1)th valid slot on cell Z' after the slot where the aperiodic SRS trigger signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, reducing the probability of congestion in response to the aperiodic SRS trigger signaling. Optionally, the valid slot is a slot on which the SRS can be transmitted.

[0347] Embodiment 5:

[0348] In this embodiment, the first indication information is configured for the aperiodic SRS trigger state.

[0349] Step 1:

[0350] The terminal device receives the cell configuration information sent by the network device through the RRC signaling.

[0351] It should be understood that Step 1 in Embodiment 5 can refer to Step 1 in Embodiment 3. To avoid repetition, it will not be elaborated here.

[0352] Step 2:

[0353] For cell Z, or BWP Y of cell Z, the network device indicates, through first indication information, that the aperiodic SRS trigger state S on cell Z or BWP Y of cell Z can trigger SRS on one or more cells. When the aperiodic SRS trigger signaling on cell Z or BWP Y of cell Z corresponds to the aperiodic SRS trigger state S, the SRS on the one or more cells is triggered.

[0354] Optionally, the above aperiodic SRS trigger state is a non-zero state.

[0355] Optionally, different corresponding cells can be configured for different aperiodic SRS trigger states.

[0356] Optionally, when the network device does not indicate relevant information through the above signaling, the trigger state S corresponding to the aperiodic SRS trigger signaling sent on cell Z only triggers the SRS sent on the uplink corresponding to cell Z. That is, when the terminal device does not receive the first indication information, the original trigger method is adopted.

[0357] Optionally, before sending the first indication information, the network device can indicate to the terminal device, through RRC signaling, to use the first indication information to trigger aperiodic SRS.

[0358] Optionally, before sending the first indication information, the terminal device can report information through UE capability to indicate that the terminal device supports triggering aperiodic SRS through the first indication information.

[0359] Option 1:

[0360] For the non-zero aperiodic SRS trigger state S, the network device indicates a group of cells through MAC CE signaling. The group of cells includes one or more cells. When the aperiodic SRS trigger signaling sent on cell Z corresponds to the trigger state S, the aperiodic SRS transmission corresponding to all active cells in the group of cells is triggered on the terminal device. For example, in the case where the corresponding aperiodic SRS is configured for the corresponding active cell. It can more flexibly control which cells' aperiodic SRS transmissions can be triggered by an aperiodic SRS trigger signaling, rather than triggering the aperiodic SRS transmissions on all active cells, which can not only improve the flexibility of the network device to trigger SRS, but also improve system performance.

[0361] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (e.g., 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0362] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0363] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling contains the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0364] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0365] Option 2:

[0366] For a non-zero aperiodic SRS trigger state S, the network device indicates a set of cells through MAC CE signaling. The set of cells contains one or more cells. For the aperiodic SRS trigger signaling sent by the network device on cell Z, if the non-zero aperiodic trigger signaling corresponds to the trigger state S, it triggers the terminal device to perform corresponding aperiodic SRS transmission on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRS is configured for the corresponding active cells. In addition, it triggers the aperiodic SRS transmission corresponding to cell Z. Compared with Option 1, for Option 1, only when the set of cells indicated by the MAC CE signaling includes cell Z, the aperiodic SRS trigger signaling on cell Z can trigger the aperiodic SRS transmission on cell Z; based on Option 1, Option 2 enables the aperiodic SRS trigger signaling on cell Z to trigger the aperiodic SRS transmission on cell Z regardless of whether the set of cells indicated by the MAC CE signaling includes cell Z; equivalently, the MAC CE signaling can reduce the indication of cell Z, thereby reducing resource overhead.

[0367] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (e.g., 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0368] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0369] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0370] Optionally, the above MAC CE signaling indicates a set of cells through a cell identifier, that is, the MAC CE signaling includes the identifier of each cell in the set of cells. When the number of cells in the set is small, signaling overhead can be reduced.

[0371] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0372] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0373] Step 3:

[0374] The terminal device receives an aperiodic SRS trigger signaling (denoted as the first signaling) on cell Z, and the trigger state S corresponding to the first signaling is greater than 0 (its value is denoted as value, simply referred to as the first value), that is, a non-zero trigger state. Then, the corresponding aperiodic SRS is sent on the previously determined cell.

[0375] For the trigger state S corresponding to the first signaling, on each of the above corresponding cells (denoted as Z'), an aperiodic SRS corresponding to the SRS resource group with the value of the first signaling value is sent. Since the trigger state is configured in the aperiodic SRS resource group on Z', there will be an aperiodic SRS resource group corresponding to the value of the first signaling value on each Z'. The corresponding SRS resource is configured with 1 slot offset or multiple slot offsets.

[0376] Optionally, the terminal device receives an aperiodic SRS trigger signaling (such as DCI) on slot n of cell Z, and the terminal device determines the slot n' corresponding to cell Z' for transmitting the SRS resource according to the slot offset corresponding to the SRS resource.

[0377] Optionally, according to the slot offset k corresponding to the SRS resource (in the case where the SRS resource is configured with 1 slot offset, or when one slot offset is activated), or the slot offset k corresponding to the SRS resource activated by the MAC signaling (in the case where the SRS resource is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (in the case where the SRS resource is configured with multiple slot offsets), the transmission slot of the SRS is determined, that is, slot n'.

[0378] For example, the slot n' can be determined with reference to the formula involved in Embodiment 1.

[0379] Optionally, according to the time slot offset k corresponding to the SRS resource (when there is 1 time slot offset configured for the SRS resource, or when one time slot offset is activated), or the time slot offset k corresponding to the SRS resource activated by the MAC signaling (when there are 1 or more time slot offsets configured for the SRS resource), or the time slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (when there are multiple time slot offsets configured for the SRS resource), the k-th or (k + 1)-th valid time slot on cell Z' after the time slot in which the aperiodic SRS trigger signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, reducing the congestion probability of responding to the aperiodic SRS trigger signaling. Optionally, the valid time slot is a time slot in which the SRS can be transmitted.

[0380] Embodiment 6:

[0381] In this embodiment, the first indication information is configured for the terminal device or the cell group including the first cell, that is, the target cell group described above.

[0382] Step 1:

[0383] It should be understood that Step 1 in Embodiment 5 can refer to Step 1 in Embodiment 3. To avoid repetition, it will not be elaborated here.

[0384] Step 2:

[0385] For the terminal device, or for a target cell group, the network device indicates, through the first indication information, which cells' SRSs on the terminal device can be triggered by the aperiodic SRS trigger signaling, or which cells' SRSs corresponding to the target cell group can be triggered. In Embodiment 1, it is indicated through signaling which cells' aperiodic SRS transmissions can be triggered by the aperiodic SRS trigger signaling sent on cell Z. Compared with Embodiment 1, the implementation and processing of the network device and the terminal device are simple, reducing the implementation complexity.

[0386] Optionally, when the network device does not indicate the relevant information through the above signaling, the aperiodic SRS trigger signaling sent on cell Z only triggers the SRS sent on the uplink corresponding to cell Z. Equivalently, when the terminal device does not receive the first indication information, the original triggering method is adopted.

[0387] Optionally, before sending the first indication information, the network device can indicate to the terminal device, through RRC signaling, to use the first indication information to trigger the aperiodic SRS.

[0388] Optionally, before sending the first indication information, the terminal device can report information through UE capability to indicate that the terminal device supports triggering the aperiodic SRS through the first indication information.

[0389] Option 1:

[0390] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. Then, on terminal device cell Z or any cell Z in the cell group, the aperiodic SRS trigger signaling sent triggers the terminal device to perform corresponding aperiodic SRS transmissions on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRS is configured for the corresponding active cells, it is possible to more flexibly control which cells' aperiodic SRS transmissions can be triggered by an aperiodic SRS trigger signaling, rather than triggering aperiodic SRS transmissions on all active cells. This can not only improve the flexibility of the network device to trigger SRS, but also improve system performance.

[0391] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0392] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0393] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0394] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0395] Option 2:

[0396] The network device indicates a set of cells through MAC CE signaling. If the set of cells contains one or more cells, then on terminal device cell Z, or on any cell Z in the cell group, the aperiodic SRS trigger signaling sent triggers the terminal device to perform corresponding aperiodic SRS transmissions on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRS is configured for the corresponding active cells. In addition, it triggers the aperiodic SRS transmission corresponding to cell Z. Compared with Option 1, for Option 1, only when the set of cells indicated by the MAC CE signaling includes cell Z, can the aperiodic SRS trigger signaling on cell Z trigger the aperiodic SRS transmission on cell Z; based on Option 1, Option 2 allows the aperiodic SRS trigger signaling on cell Z to trigger the aperiodic SRS transmission on cell Z regardless of whether the set of cells indicated by the MAC CE signaling includes cell Z; equivalently, the MAC CE signaling can reduce the indication of cell Z, thereby reducing resource overhead.

[0397] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (such as 1), then the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0398] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0399] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0400] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling contains the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0401] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0402] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0403] Step 3:

[0404] If the terminal device receives an aperiodic SRS trigger signaling (denoted as the first signaling) on cell Z, and the value corresponding to the first signaling is greater than 0 (the value is denoted as value), then it sends the corresponding aperiodic SRS on the previously determined cells.

[0405] For each of the above-determined cells (denoted as Z'), send the aperiodic SRS corresponding to the SRS resource group corresponding to the first signaling value value. Since the trigger state is configured in the aperiodic SRS resource group on Z', there will be an aperiodic SRS resource group corresponding to the first signaling value value on each Z'. The corresponding SRS resource is configured with 1 slot offset or multiple slot offsets.

[0406] Optionally, the terminal device receives an aperiodic SRS trigger signaling (such as DCI) on slot n of cell Z, and the terminal device determines to transmit the SRS resource on slot n' corresponding to cell Z' according to the slot offset corresponding to the SRS resource.

[0407] Optionally, according to the slot offset k corresponding to the SRS resource (in the case where the SRS resource is configured with 1 slot offset, or when one slot offset is activated), or the slot offset k corresponding to the SRS resource activated by the MAC signaling (in the case where the SRS resource is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (in the case where the SRS resource is configured with multiple slot offsets), the transmission slot of the SRS is determined, that is, slot n'.

[0408] For example, the slot n' can be determined with reference to the formula involved in Embodiment 1.

[0409] Optionally, according to the slot offset k corresponding to the SRS resource (in the case where the SRS resource is configured with 1 slot offset, or when one slot offset is activated), or the slot offset k corresponding to the SRS resource activated by the MAC signaling (in the case where the SRS resource is configured with 1 or multiple slot offsets), or the slot offset k corresponding to the SRS resource indicated by the aperiodic SRS trigger signaling (in the case where the SRS resource is configured with multiple slot offsets), the kth or (k + 1)th valid slot on cell Z' after the slot where the aperiodic SRS trigger signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, reducing the congestion probability of responding to the aperiodic SRS trigger signaling. Optionally, the valid slot is a slot on which the SRS can be transmitted.

[0410] Figure 26 FIG. shows a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. The method 300 can be executed interactively by a terminal device and a network device. Figure 26 The terminal device shown in Figure 1 can be the terminal device shown in Figure 26 The network device shown in Figure 1 can be an access network device as shown in

[0411] As Figure 26 shown, the method 300 may include:

[0412] S310, the terminal device receives second indication information sent by the network device, where the second indication information is used to indicate that the sounding reference signal (SRS) on a first cell can be triggered by an aperiodic SRS trigger signaling on at least one third cell, and the second indication information is carried by a media access control control element (MAC CE) signaling.

[0413] For example, after the terminal device receives the second indication information and receives the aperiodic SRS trigger signaling on any cell of the at least one third cell, the terminal device may be triggered to send an SRS on the first cell.

[0414] It should be noted that the cell involved in the embodiments of the present application may be equivalent to a carrier. For example, a cell may be equivalent to a component carrier (CC) in a carrier aggregation (CA) scenario. In other words, the second indication information may be used to indicate that the sounding reference signal (SRS) on a first carrier can be triggered by an aperiodic SRS trigger signaling on at least one third carrier. In addition, the at least one third cell may be one cell, a group of cells, or multiple cells, and the present application does not make specific limitations thereon.

[0415] For example, if the at least one third cell is one third cell, equivalently, the second indication information is used to indicate that the SRS on the first cell can be triggered by an aperiodic SRS trigger signaling on another cell. For another example, if the at least one third cell is a group of cells, equivalently, the second indication information may be used to indicate that the SRS on the first cell can be triggered by an aperiodic SRS trigger signaling on any cell in the group of cells. For another example, if the at least one third cell is multiple cells, equivalently, the first indication information may be used to indicate that the SRS on the first cell can be triggered by an SRS trigger command on any cell in the multiple cells. It should be understood that the group of cells or the multiple cells may or may not include the first cell, and the embodiments of the present application do not make specific limitations thereon.

[0416] Through the second indication information, the SRS on the first cell can be triggered by the aperiodic SRS trigger command on the at least one third cell. In other words, it is possible to achieve the trigger transmission of aperiodic SRS across cells (or across carriers) in a multi-cell scenario.

[0417] In some embodiments of the present application, the second indication information is used to indicate the at least one third cell, wherein the aperiodic SRS triggering signaling on the at least one third cell is used to trigger the SRS on the first cell.

[0418] In some embodiments of the present application, if the second indication information is used to indicate a second cell group, the at least one third cell is all active cells in the second cell group. Optionally, the maximum number of cells in the second cell group is 2, 4, 8 or 32.

[0419] In some embodiments of the present application, if the second indication information is used to indicate a second cell group, the at least one third cell is the first cell and all active cells in the second cell group. Optionally, the maximum number of cells in the second cell group is 1, 2, 3, 4, 7, 8, 31 or 32.

[0420] In some embodiments of the present application, the second indication information indicates the second cell group by means of a bitmap.

[0421] For example, the MAC CE signaling includes at least one bit, each bit in the at least one bit corresponds to a cell in the second cell group, and the value on each bit is used to indicate whether the cell corresponding to each bit belongs to the second cell group.

[0422] For example, the MAC CE signaling further includes at least one of the following: the identifier of the first cell, the identifier of the first bandwidth part BWP of the first cell, or reserved bits.

[0423] In some embodiments of the present application, the method 300 may further include:

[0424] Receiving a third RRC signaling, and switching or determining the length of the at least one bit according to the third RRC signaling.

[0425] In some embodiments of the present application, the second indication information indicates the second cell group by means of a cell identifier.

[0426] For example, the MAC CE signaling includes the identifier of each cell in the second cell group.

[0427] For example, the MAC CE signaling further includes at least one of the following:

[0428] The identifier of the first cell;

[0429] The identifier of the first bandwidth part BWP of the first cell;

[0430] The first information, which is used to indicate the number of cells in the second cell group; or

[0431] Reserved bits.

[0432] In some embodiments of this application, the method 300 may further include:

[0433] Receiving a fourth RRC signaling, where the fourth RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one third cell.

[0434] In other words, the network device sends the fourth RRC signaling to the terminal device to configure the at least one cell.

[0435] It should be noted that for SRS, transmission needs to be based on an SRS resource set (SRS-ResourceSet) or an SRS resource (SRS-Resource). In other words, the SRS sent by the terminal device can be the SRS corresponding to the SRS resource set or the SRS resource. The slot offset of the SRS corresponding to the SRS resource set is configured for the SRS resource set, and the slot offset of the SRS corresponding to the SRS resource is configured for the SRS resource. The SRS corresponding to the SRS resource set introduced above can also be called a normal SRS. Optionally, the usage field in the SRS resource set can be configured as one of beam management, codebook, non-codebook, and antenna switching. The SRS corresponding to the SRS resource can also be an SRS for positioning, which is configured by the RRC signaling SRS-PosResource-r16, and the corresponding SRS resource set is configured by the RRC signaling SRS-PosResourceSet-r16. For simplicity of description later, only the normal SRS is used as an example in some places, but the solution is equally applicable to the positioning SRS.

[0436] In some embodiments of this application, the SRS resource sets of different cells in the first cell and the at least one third cell are configured by different SRS resource set SRS-ResourceSet signaling, and the SRS resources in different SRS resource sets in the SRS resource set of the first cell and the SRS resource sets of the at least one third cell are configured by different SRS resource SRS-Resource signaling.

[0437] It should be noted that the SRS resource sets involved in the embodiments of this application are all aperiodic SRS resource sets, and the SRS resources are all aperiodic SRS resources.

[0438] For example, the SRS resource set SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured by the SRS configuration SRS-Config.

[0439] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one third cell, they are configured by the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource set cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one trigger state among the multiple non-zero trigger states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger state among the multiple non-zero trigger states.

[0440] For example, in some embodiments of the present application, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

[0441] For example, N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

[0442] In some embodiments of the present application, the SRS resource set of the first cell is configured with at least one time slot offset; the method 300 may further include:

[0443] Determine a fourth time slot based on the first time slot and the time slot offset k corresponding to the SRS resource set of the first cell. The first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the first cell is the SRS resource set corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling.

[0444] Transmit the SRS corresponding to the SRS resource set of the first cell on the fourth time slot of the first cell.

[0445] For example, the SRS resource set of the first cell is configured with multiple slot offsets, and the slot offset k corresponding to the SRS resource set of the first cell is the activated slot offset among the multiple slot offsets.

[0446] For another example, the SRS resource set of the first cell is configured with one slot offset, and the one slot offset is the slot offset k.

[0447] For another example, the fourth slot is a valid slot after the first slot, and the valid slot is a slot available for transmitting SRS.

[0448] In some embodiments of the present application, the SRS resource sets of different cells in the first cell and the at least one third cell are configured by different SRS-Pos resource set version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource sets in the SRS resource set of the first cell and the SRS resource sets of the at least one third cell are configured by different SRS Pos resources version 16 SRS-PosResource-r16 signaling.

[0449] It should be noted that the SRS resource sets involved in the embodiments of the present application are all aperiodic SRS resource sets, and the SRS resources are all aperiodic SRS resources.

[0450] For example, the SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

[0451] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one third cell, they are configured by the aperiodic SRS resource trigger list version 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

[0452] For example, in some embodiments of the present application, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

[0453] For example, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

[0454] In some embodiments of the present application, at least one slot offset is configured for the SRS resources in the SRS resource set of the first cell; the method 300 may further include:

[0455] Determine a fifth slot based on a first slot and a slot offset k' corresponding to the SRS resources in the SRS resource set of the first cell, where the first slot is the slot in which the aperiodic SRS trigger signaling is located, the SRS resource set of the first cell is the SRS resource set corresponding to a first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

[0456] On the fifth slot of the first cell, transmit the SRS corresponding to the SRS resources in the SRS resource set of the first cell.

[0457] For example, multiple slot offsets are configured for the SRS resources in the SRS resource set of the first cell, and the slot offset k' corresponding to the SRS resources in the SRS resource set of the first cell is the activated slot offset among the multiple slot offsets.

[0458] For another example, one slot offset is configured for the SRS resource set of the first cell, and the one slot offset is the slot offset k'.

[0459] For another example, the fifth slot is a valid slot after the first slot, and the valid slot is a slot available for transmitting SRS.

[0460] It should be noted that the valid slot can also be understood as a slot available for uplink transmission. The slot available for uplink transmission can be understood as a slot only used for uplink transmission, that is, always used for uplink transmission, or can be understood as a slot containing an uplink symbol, or can be understood as a slot containing a flexible symbol, or can be understood as a flexible slot, or can be understood as a slot that is occasionally not available for uplink transmission. For example, a slot occasionally used for downlink transmission. Optionally, whether the slot available for uplink transmission in the present application can actually be used for uplink transmission depends on whether there is a collision with other signal transmissions.

[0461] The technical solution of the method 200 will be described below with specific embodiments.

[0462] Embodiment 7:

[0463] Step 1;

[0464] The terminal device receives the cell configuration information sent by the network device through RRC signaling.

[0465] For example, carrier aggregation (CA) configuration information. There are A cells configured. For each of one or more (denoted as B, B <= A) of the A cells (in some cases, some cells may not be configured with corresponding aperiodic SRS, so it is written as one or more of A), the network device carries SRS configuration information through RRC signaling to configure one or more SRS resource sets, and each SRS resource set contains one or more SRS resources. The following description is for a certain cell among the B cells, and the configurations on different cells can be independent. The following takes cell Z as an example for description.

[0466] Optionally, the SRS resource set on cell Z is configured through the RRC signaling SRS-ResourceSet, and the SRS resources are configured through the RRC signaling SRS-Resource.

[0467] Optionally, the usage field in the SRS-ResourceSet signaling can be configured as one of beamManagement, codebook, nonCodebook, and antennaSwitching.

[0468] Optionally, the SRS resource set on cell Z is configured with multiple (denoted as M, M >= 1) trigger states. Optionally, each trigger state corresponds to a value in the SRS request field in the aperiodic SRS trigger signaling, that is, a code point. For example, the values of the trigger states in Table 1.

[0469] Optionally, the above multiple trigger states are configured through aperiodicSRS-ResourceTrigger and aperiodicSRS-ResourceTriggerList in the SRS-ResourceSet IE, where aperiodicSRS-ResourceTrigger configures one value, and aperiodicSRS-ResourceTriggerList configures one or more values.

[0470] Optionally, the value range of aperiodicSRS-ResourceTrigger is an integer from 1 to N - 1.

[0471] Optionally, the value of each element in aperiodicSRS-ResourceTriggerLis is an integer from 1 to N - 1.

[0472] For example, N may be equal to the number of aperiodic SRS trigger states (maxNrofSRS-TriggerStates), with a value of 4.

[0473] As another example, the value of N is determined to be 4 or a larger value (e.g., 8 or 16) according to the configuration information sent by the network device; of course, in other alternative embodiments, other naming may be adopted. By increasing the number of states corresponding to the aperiodic SRS trigger signaling, the flexibility of DCI-triggered aperiodic SRS can be improved, and the system performance can be enhanced.

[0474] Optionally, the configuration information is indicated to the terminal device through RRC signaling or MAC CE signaling.

[0475] Optionally, the terminal device notifies the network device through the terminal device capability reporting information that it can support more aperiodic SRS trigger states (Maximum number of SRS trigger states), that is, N is greater than 4, so that the network device determines N based on the capabilities reported by the terminal device.

[0476] Optionally, the RRC signaling is configured through SRS-Config.

[0477] Step 2:

[0478] For cell Z or BWP Y of cell Z, the network device indicates through the second indication information which aperiodic SRS trigger signaling on which cells can trigger the aperiodic SRS transmission of cell Z or BWP Y of cell Z, so that cross-cell triggering of aperiodic SRS can be achieved, DCI overhead can be reduced, and system flexibility can be increased.

[0479] Optionally, when the network device does not indicate relevant information through the above signaling, the aperiodic SRS trigger signaling sent on cell Z only triggers the SRS sent on the uplink corresponding to cell Z. Equivalently, when the terminal device does not receive the second indication information, the original triggering method is adopted.

[0480] Optionally, before the second indication information is sent, the network device can indicate to the terminal device through RRC signaling to use the second indication information to trigger the aperiodic SRS.

[0481] Optionally, before the second indication information is sent, the terminal device can report information through UE capability to indicate that the terminal device supports triggering the aperiodic SRS through the second indication information.

[0482] Option 1:

[0483] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. Then, the terminal device transmits aperiodic SRS signaling on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRS is configured for the corresponding active cell, the aperiodic SRS transmission on cell Z can be triggered. It can more flexibly control which aperiodic SRS trigger signaling on which cells can trigger an aperiodic SRS, rather than allowing the aperiodic SRS trigger signaling on all active cells to trigger. This gives the network device greater flexibility and improves system performance.

[0484] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0485] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0486] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0487] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0488] Option 2:

[0489] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. Then, the terminal device transmits aperiodic SRS signaling on all active cells in the set of cells. For example, in the case where corresponding aperiodic SRS is configured for the corresponding active cell, and the aperiodic SRS signaling on cell Z can both trigger the aperiodic SRS transmission on cell Z. It can more flexibly control which aperiodic SRS trigger signaling on which cells can trigger an aperiodic SRS, rather than allowing the aperiodic SRS trigger signaling on all active cells to trigger. This gives the network device greater flexibility and improves system performance. Compared with Option 1, the MAC CE signaling can reduce the indication of cell Z, thereby reducing resource overhead.

[0490] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0491] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0492] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0493] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling contains the identifiers of each cell in the set of cells. When the number of cells in the set is small, signaling overhead can be reduced.

[0494] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0495] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0496] Step 3:

[0497] The terminal device receives an aperiodic SRS trigger signaling (denoted as the first signaling) in one of the above-determined cells (denoted as Z'), and the value corresponding to the first signaling is greater than 0 (the value is denoted as value), then the corresponding aperiodic SRS is transmitted on cell Z. The corresponding SRS resource set is configured with 1 time slot offset (slot offset) or multiple time slot offsets.

[0498] Optionally, the terminal device receives an aperiodic SRS trigger signaling (such as DCI) on time slot slot n of cell Z', and the terminal device determines to transmit the SRS resource on slot n' corresponding to cell Z according to the time slot offset corresponding to the SRS resource set where the SRS resource is located.

[0499] Optionally, according to the time slot offset k corresponding to the SRS resource set (in the case where the SRS resource set is configured with 1 time slot offset, or in the case where 1 time slot offset is activated), or the time slot offset k corresponding to the SRS resource set activated by the MAC signaling (in the case where the SRS resource set is configured with 1 or multiple time slot offsets), or the time slot offset k corresponding to the SRS resource set indicated by the aperiodic SRS trigger signaling (in the case where the SRS resource set is configured with multiple time slot offsets), the transmission slot of the SRS is determined, that is, slot n'.

[0500] For example, the slot n' can be determined with reference to the formula involved in Embodiment 1.

[0501] Optionally, according to the slot offset k corresponding to the SRS resource set (when 1 slot offset is configured for the SRS resource set, or when 1 slot offset is activated), or the slot offset k corresponding to the SRS resource set activated by MAC signaling (when 1 or more slot offsets are configured for the SRS resource set), or the slot offset k corresponding to the SRS resource set indicated by the aperiodic SRS trigger signaling (when multiple slot offsets are configured for the SRS resource set), the k-th or (k + 1)-th valid slot on cell Z' after the slot where the aperiodic SRS trigger signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, reducing the probability of congestion in response to the aperiodic SRS trigger signaling. Optionally, the valid slot is a slot that can transmit the SRS.

[0502] The solution of using the second indication information to trigger the SRS corresponding to the SRS resource group was described above in conjunction with Embodiment 7. Below, the use of the second indication information to trigger the SRS corresponding to the SRS resource will be described in conjunction with Embodiment 8.

[0503] Embodiment 8:

[0504] Step 1:

[0505] The terminal device receives the cell configuration information sent by the network device through RRC signaling.

[0506] For example, carrier aggregation (CA) configuration information. There are A cells configured. For each of one or more (denoted as B, B <= A) of the A cells (in some cases, some cells may not be configured with corresponding aperiodic SRS, so it is written as one or more of A), the network device carries SRS configuration information through RRC signaling, configuring 1 or more SRS resource groups, and each SRS resource group contains 1 or more SRS resources. The following description is for a certain cell among the B cells, and the configurations on different cells can be independent. The following takes cell Z as an example for description.

[0507] Optionally, the SRS resource group is configured through the RRC signaling SRS-PosResourceSet-r16, and the SRS resource is configured through the RRC signaling SRS-PosResource-r16.

[0508] Optionally, multiple (denoted as M, M >= 1) trigger states are configured for at least one of the SRS resource groups (denoted as Set X). Optionally, each trigger state corresponds to a value of the SRS request field in the aperiodic SRS trigger signaling, that is, a code point. For example, the values of the trigger states in Table 1.

[0509] Optionally, the above multiple trigger states are configured by aperiodicSRS-ResourceTriggerList-r16 in SRS-PosResourceSet-r16.

[0510] Optionally, the value of each element in aperiodicSRS-ResourceTriggerList-r16 is an integer from 1 to N-1.

[0511] For example, N can be equal to the number of aperiodic SRS trigger states (maxNrofSRS-TriggerStates), with a value of 4.

[0512] Again, according to the configuration information sent by the network device, the value of N is determined to be 4 or a larger value (e.g., 8 or 16); of course, in other alternative embodiments, other names may be used. By increasing the number of states corresponding to the aperiodic SRS trigger signaling, the flexibility of DCI triggering aperiodic SRS can be improved, and the system performance can be enhanced.

[0513] Optionally, the configuration information is indicated to the terminal device through RRC signaling or MAC CE signaling.

[0514] Optionally, the terminal device notifies the network device through the terminal device capability reporting information that it can support more aperiodic SRS trigger states (Maximum number of SRS trigger states), that is, N is greater than 4, so that the network device determines N based on the capabilities reported by the terminal device.

[0515] Optionally, the RRC signaling is configured through SRS-Config.

[0516] Step 2:

[0517] For cell Z or BWP Y of cell Z, the network device indicates through the second indication information which aperiodic SRS trigger signaling on which cells can trigger the aperiodic SRS transmission of cell Z or BWP Y of cell Z, so as to enable cross-cell triggering of aperiodic SRS, reduce DCI overhead, and increase system flexibility.

[0518] Optionally, when the network device does not indicate relevant information through the above signaling, the aperiodic SRS trigger signaling sent on cell Z only triggers the SRS sent on the uplink corresponding to cell Z. Equivalently, when the terminal device does not receive the second indication information, the original triggering method is adopted.

[0519] Optionally, before sending the second indication information, the network device can indicate to the terminal device through RRC signaling to use the second indication information to trigger aperiodic SRS.

[0520] Optionally, before sending the second indication information, the terminal device may report information through UE capability to indicate that the terminal device supports triggering the aperiodic SRS through the second indication information.

[0521] Option 1:

[0522] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. Then, the terminal device transmits aperiodic SRS signaling on all active cells in the set of cells. For example, when the corresponding aperiodic SRS is configured for the corresponding active cell, the aperiodic SRS transmission on cell Z can be triggered. It can more flexibly control which aperiodic SRS trigger signaling on which cells can trigger an aperiodic SRS, rather than allowing the aperiodic SRS trigger signaling on all active cells to trigger. This gives the network device greater flexibility and improves system performance.

[0523] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce the signaling overhead.

[0524] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0525] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce the signaling overhead.

[0526] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0527] Option 2:

[0528] The network device indicates a set of cells through MAC CE signaling. The set of cells includes one or more cells. Then, the terminal device transmits aperiodic SRS signaling on all active cells in the set of cells. For example, when corresponding aperiodic SRS is configured for the corresponding active cell. And the aperiodic SRS signaling on cell Z can trigger the aperiodic SRS transmission on cell Z. It is possible to more flexibly control which aperiodic SRS triggering signaling on which cells can trigger an aperiodic SRS, rather than allowing the aperiodic SRS triggering signaling on all active cells to trigger. This gives the network device greater flexibility and improves system performance. Compared with Option 1, the MAC CE signaling can reduce the indication of cell Z, thereby reducing resource overhead.

[0529] Optionally, the above MAC CE signaling indicates a set of cells through a bitmap. For example, if the corresponding bit is a specified value (such as 1), the cell corresponding to this bit belongs to the set of cells. When the number of cells in the set is large, using a bitmap can reduce signaling overhead.

[0530] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0531] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0532] Optionally, the above MAC CE signaling indicates a set of cells through cell identifiers, that is, the MAC CE signaling includes the identifiers of each cell in the set of cells. When the number of cells in the set is small, it can reduce signaling overhead.

[0533] Optionally, the MAC CE signaling indicates at most 32, or 8, or 4, or 2 cells.

[0534] Optionally, the MAC CE signaling indicates at most 31, or 7, or 3, or 1 cell.

[0535] Step 3:

[0536] The terminal device receives an aperiodic SRS triggering signaling (denoted as the first signaling) at a certain one (denoted as Z') of the above determined cells. The value corresponding to the first signaling is greater than 0 (the value is denoted as value), then the corresponding aperiodic SRS is sent on cell Z. The corresponding SRS resource configuration has one slot offset or multiple slot offsets

[0537] Optionally, the terminal device receives an aperiodic SRS triggering signaling (such as DCI) on slot n of cell Z'. The terminal device determines to transmit the SRS resource on slot n' corresponding to cell Z according to the slot offset corresponding to the SRS resource.

[0538] Optionally, according to the slot offset k corresponding to the SRS resource (in the case where 1 slot offset is configured for the SRS resource, or when one slot offset is activated), or the slot offset k corresponding to the SRS resource activated by the MAC signaling (in the case where 1 or more slot offsets are configured for the SRS resource), or the slot offset k corresponding to the SRS resource indicated by the aperiodic SRS triggering signaling (in the case where multiple slot offsets are configured for the SRS resource), the transmission slot of the SRS, that is, slot n', is determined.

[0539] For example, the slot n' can be determined with reference to the formula involved in Embodiment 1.

[0540] Optionally, according to the slot offset k corresponding to the SRS resource (in the case where 1 slot offset is configured for the SRS resource, or when one slot offset is activated), or the slot offset k corresponding to the SRS resource activated by the MAC signaling (in the case where 1 or more slot offsets are configured for the SRS resource), or the slot offset k corresponding to the SRS resource indicated by the aperiodic SRS triggering signaling (in the case where multiple slot offsets are configured for the SRS resource), the kth or (k + 1)th valid slot on cell Z' after the slot where the aperiodic SRS triggering signaling is located is slot n'. Thus, the aperiodic SRS can be triggered more flexibly, reducing the congestion probability of responding to the aperiodic SRS triggering signaling. Optionally, the valid slot is a slot on which the SRS can be transmitted.

[0541] It should be understood that for the specific examples of the MAC CE signaling in Embodiments 1 to 8, reference can be made to the accompanying drawings. To avoid repetition, they are not elaborated here.

[0542] The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept scope of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all fall within the protection scope of the present application. For example, in the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present application does not separately describe various possible combination methods. Also, for example, any combination can be made between various different embodiments of the present application as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed by the present application.

[0543] It should also be understood that in various method embodiments of the present application, the magnitudes of the sequence numbers of the above processes do not imply the order of execution. The order of execution of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink" and "uplink" are used to represent the transmission directions of signals or data. Among them, "downlink" is used to represent the first direction in which the transmission direction of signals or data is from the site to the user equipment of the cell, and "uplink" is used to represent the second direction in which the transmission direction of signals or data is from the user equipment of the cell to the site. For example, "downlink signal" means that the transmission direction of this signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. Specifically, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in this article, the character " / " generally represents an "or" relationship between the associated objects before and after.

[0544] As described above in conjunction with Figures 2 to 26 , the method embodiments of the present application have been described in detail. Below in conjunction with Figures 27 to 32 , the apparatus embodiments of the present application will be described in detail.

[0545] Figure 27 FIG. is a schematic block diagram of a terminal device 400 according to an embodiment of the present application.

[0546] As Figure 27 shown, the terminal device 400 may include:

[0547] A receiving unit 410, configured to receive first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal SRS trigger signaling on a first cell is used to trigger SRS on at least one second cell, and the first indication information is carried by a media access control control element MAC CE signaling.

[0548] In some embodiments of the present application, the first indication information is used to indicate an aperiodic SRS trigger signaling on the first cell or a first bandwidth part BWP of the first cell, for triggering SRS on the at least one second cell corresponding to the first cell or the first BWP.

[0549] In some embodiments of the present application, the first indication information is used to indicate a first trigger state, or a first trigger state in an aperiodic SRS trigger signaling on the first cell or a first bandwidth part BWP of the first cell, for triggering SRS on the at least one second cell corresponding to the first trigger state.

[0550] In some embodiments of the present application, the first trigger state is a non-zero trigger state.

[0551] In some embodiments of the present application, the first indication information is used to indicate an aperiodic SRS triggering signaling on the first cell of the terminal device or the first cell of the target cell group of the terminal device, for triggering SRS on the at least one second cell corresponding to the terminal device or the target cell group.

[0552] In some embodiments of the present application, the first indication information is used to indicate the at least one second cell, wherein the aperiodic SRS triggering signaling on the first cell is used to trigger SRS on the at least one second cell.

[0553] In some embodiments of the present application, if the first indication information is used to indicate a first cell group, the at least one second cell is all active cells in the first cell group.

[0554] In some embodiments of the present application, the maximum number of cells in the first cell group is 2, 4, 8 or 32.

[0555] In some embodiments of the present application, if the first indication information is used to indicate a first cell group, the at least one second cell is the first cell and all active cells in the first cell group.

[0556] In some embodiments of the present application, the maximum number of cells in the first cell group is 1, 2, 3, 4, 7, 8, 31 or 32.

[0557] In some embodiments of the present application, the first indication information indicates the first cell group by means of a bitmap.

[0558] In some embodiments of the present application, the MAC CE signaling includes at least one bit, each bit in the at least one bit corresponds to a cell in the first cell group, and the value on one of the at least one bit is used to indicate whether the cell corresponding to the one bit belongs to the first cell group.

[0559] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following: an identifier of the first cell, an identifier of a first bandwidth part BWP of the first cell, or reserved bits.

[0560] In some embodiments of the present application, the receiving unit 410 is further configured to:

[0561] Receive a first RRC signaling, where the first RRC signaling is used to switch or determine the length of the at least one bit.

[0562] In some embodiments of the present application, the first indication information indicates the first cell group through a cell identifier.

[0563] In some embodiments of the present application, the MAC CE signaling includes the identifiers of each cell in the first cell group.

[0564] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following:

[0565] The identifier of the first cell;

[0566] The identifier of the first bandwidth part BWP of the first cell;

[0567] First information for indicating the number of cells in the first cell group; or

[0568] Reserved bits.

[0569] In some embodiments of the present application, the receiving unit 410 is further configured to:

[0570] Receive a second RRC signaling for configuring at least one cell, where the at least one cell includes the first cell and the at least one second cell.

[0571] In some embodiments of the present application, the SRS resource groups of different cells among the first cell and the at least one second cell are configured through different SRS resource group SRS-ResourceSet signaling, and the SRS resources in different SRS resource groups among the SRS resource group of the first cell and the SRS resource groups of the at least one second cell are configured through different SRS resource SRS-Resource signaling.

[0572] In some embodiments of the present application, the SRS resource group SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured through an SRS configuration SRS-Config.

[0573] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one second cell, configuration is performed through the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource set cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one trigger state among the multiple non-zero trigger states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger state among the multiple non-zero trigger states.

[0574] In some embodiments of the present application, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

[0575] In some embodiments of the present application, N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

[0576] In some embodiments of the present application, at least one time slot offset is configured for the SRS resource set of each second cell in the at least one second cell; the receiving unit 410 is further configured to:

[0577] Determine the second time slot based on the first time slot and the time slot offset k corresponding to the SRS resource set of one second cell in the at least one second cell. The first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the one second cell is the SRS resource set corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling.

[0578] On the second time slot of the one second cell, transmit the SRS corresponding to the SRS resource set of the one second cell.

[0579] In some embodiments of the present application, multiple time slot offsets are configured for the SRS resource set of each second cell in the at least one second cell, and the time slot offset k corresponding to the SRS resource set of the one second cell is the activated time slot offset among the multiple time slot offsets.

[0580] In some embodiments of the present application, each second cell in the at least one second cell is configured with a slot offset for the SRS resource group, and the slot offset is the slot offset k.

[0581] In some embodiments of the present application, the second time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0582] In some embodiments of the present application, the SRS resource groups of different cells in the first cell and the at least one second cell are configured by different SRS-Pos resource group version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource groups in the SRS resource group of the first cell and the SRS resource groups of the at least one second cell are configured by different SRS Pos resources version 16 SRS-PosResource-r16 signaling.

[0583] In some embodiments of the present application, the SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

[0584] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one second cell, they are configured by the aperiodic SRS resource trigger list version 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

[0585] In some embodiments of the present application, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

[0586] In some embodiments of the present application, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

[0587] In some embodiments of the present application, at least one slot offset is configured for the SRS resources in the SRS resource group of each second cell in the at least one second cell; the receiving unit 410 is further configured to:

[0588] Determine a third time slot based on the time slot offset k' corresponding to the sounding reference signal (SRS) resources in the SRS resource group of a second cell among the at least one second cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource group of the one second cell is the SRS resource group corresponding to a first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

[0589] On the third time slot of the one second cell, transmit the SRS corresponding to the SRS resources in the SRS resource group of the one second cell.

[0590] In some embodiments of the present application, each SRS resource group of each second cell among the at least one second cell is configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resources in the SRS resource group of the one second cell is the activated time slot offset among the multiple time slot offsets.

[0591] In some embodiments of the present application, each SRS resource group of each second cell among the at least one second cell is configured with one time slot offset, and the one time slot offset is the time slot offset k'.

[0592] In some embodiments of the present application, the third time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0593] It should be understood that the apparatus embodiments and the method embodiments can correspond to each other, and similar descriptions can refer to the method embodiments. Specifically, Figure 27 the shown terminal device 400 can correspond to the corresponding entity in the method 200 of the embodiments of the present application, and the foregoing and other operations and / or functions of each unit in the terminal device 400 are respectively for implementing Figure 2 the corresponding processes in each method in, and for the sake of brevity, they will not be elaborated here.

[0594] Figure 28 is a schematic block diagram of a network device 500 provided by the embodiments of the present application.

[0595] As Figure 28 shown, the network device 500 may include:

[0596] A sending unit 510, configured to send first indication information, where the first indication information is used to indicate that the aperiodic sounding reference signal (SRS) trigger signaling on a first cell is used to trigger SRS on at least one second cell, and the first indication information is carried by a media access control control element (MAC CE) signaling.

[0597] In some embodiments of the present application, the first indication information is used to indicate an aperiodic SRS triggering signaling on the first cell or a first bandwidth part (BWP) of the first cell, and is used to trigger SRS on the at least one second cell corresponding to the first cell or the first BWP.

[0598] In some embodiments of the present application, the first indication information is used to indicate a first triggering state, or a first triggering state in the aperiodic SRS triggering signaling on the first cell or a first bandwidth part (BWP) on the first cell, and is used to trigger SRS on the at least one second cell corresponding to the first triggering state.

[0599] In some embodiments of the present application, the first triggering state is a non-zero triggering state.

[0600] In some embodiments of the present application, the first indication information is used to indicate an aperiodic SRS triggering signaling on the first cell of the terminal device or the first cell of the target cell group of the terminal device, and is used to trigger SRS on the at least one second cell corresponding to the terminal device or the target cell group.

[0601] In some embodiments of the present application, the first indication information is used to indicate the at least one second cell, wherein the aperiodic SRS triggering signaling on the first cell is used to trigger SRS on the at least one second cell.

[0602] In some embodiments of the present application, if the first indication information is used to indicate a first cell group, the at least one second cell is all active cells in the first cell group.

[0603] In some embodiments of the present application, the maximum number of cells in the first cell group is 2, 4, 8, or 32.

[0604] In some embodiments of the present application, if the first indication information is used to indicate a first cell group, the at least one second cell is the first cell and all active cells in the first cell group.

[0605] In some embodiments of the present application, the maximum number of cells in the first cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

[0606] In some embodiments of the present application, the first indication information indicates the first cell group through a bitmap.

[0607] In some embodiments of the present application, the MAC CE signaling includes at least one bit, each bit in the at least one bit corresponds to a cell in the first cell group, and the value of one bit in the at least one bit is used to indicate whether the cell corresponding to the one bit belongs to the first cell group.

[0608] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following: the identifier of the first cell, the identifier of the first bandwidth part BWP of the first cell, or reserved bits.

[0609] In some embodiments of the present application, the sending unit 510 is further configured to:

[0610] Send a first RRC signaling, and switch or determine the length of the at least one bit according to the first RRC signaling.

[0611] In some embodiments of the present application, the first indication information indicates the first cell group through a cell identifier.

[0612] In some embodiments of the present application, the MAC CE signaling includes the identifier of each cell in the first cell group.

[0613] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following:

[0614] The identifier of the first cell;

[0615] The identifier of the first bandwidth part BWP of the first cell;

[0616] First information, used to indicate the number of cells in the first cell group; or

[0617] Reserved bits.

[0618] In some embodiments of the present application, the sending unit 510 is further configured to:

[0619] Send a second RRC signaling, and the second RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one second cell.

[0620] In some embodiments of the present application, the SRS resource groups of different cells among the first cell and the at least one second cell are configured through different SRS resource group SRS-ResourceSet signals, and the SRS resources in different SRS resource groups among the SRS resource group of the first cell and the SRS resource groups of the at least one second cell are configured through different SRS resource SRS-Resource signals.

[0621] In some embodiments of the present application, the SRS resource set SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured by an SRS configuration SRS-Config.

[0622] In some embodiments of the present application, for a plurality of triggering states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one second cell, the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource set cell SRS-ResourceSet IE are configured. The aperiodicSRS-ResourceTrigger is used to configure one triggering state among the plurality of non-zero triggering states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one triggering state among the plurality of non-zero triggering states.

[0623] In some embodiments of the present application, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS triggering states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

[0624] In some embodiments of the present application, N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

[0625] In some embodiments of the present application, at least one time slot offset is configured for the SRS resource set of each second cell in the at least one second cell; the sending unit 510 is further configured to:

[0626] Determine the second time slot based on the first time slot and the time slot offset k corresponding to the SRS resource set of one second cell in the at least one second cell. The first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the one second cell is the SRS resource set corresponding to the first value, and the first value is the value of the triggering state in the aperiodic SRS trigger signaling.

[0627] Receive the SRS corresponding to the SRS resource set of the one second cell on the second time slot of the one second cell.

[0628] In some embodiments of the present application, each second cell in the at least one second cell has its SRS resource group configured with a plurality of slot offsets, and the slot offset k corresponding to the SRS resource group of one second cell is the slot offset that has been activated among the plurality of slot offsets.

[0629] In some embodiments of the present application, each second cell in the at least one second cell has its SRS resource group configured with one slot offset, and the one slot offset is the slot offset k.

[0630] In some embodiments of the present application, the second time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0631] In some embodiments of the present application, the SRS resource groups of different cells in the first cell and the at least one second cell are configured by different SRS-Pos resource group Release 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource groups in the SRS resource group of the first cell and the SRS resource groups of the at least one second cell are configured by different SRS Pos resources Release 16 SRS-PosResource-r16 signaling.

[0632] In some embodiments of the present application, the SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

[0633] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one second cell, they are configured by the aperiodic SRS resource trigger list Release 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

[0634] In some embodiments of the present application, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

[0635] In some embodiments of the present application, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

[0636] In some embodiments of the present application, at least one time slot offset is configured for the SRS resources in the SRS resource group of each second cell among the at least one second cell; the sending unit 510 is further configured to:

[0637] Determine a third time slot based on the first time slot and the time slot offset k' corresponding to the SRS resources in the SRS resource group of one second cell among the at least one second cell, where the first time slot is the time slot where the aperiodic SRS triggering signaling is located, the SRS resource group of the one second cell is the SRS resource group corresponding to the first value, and the first value is the value of the triggering state in the aperiodic SRS triggering signaling;

[0638] Receive the SRS corresponding to the SRS resources in the SRS resource group of the one second cell on the third time slot of the one second cell.

[0639] In some embodiments of the present application, multiple time slot offsets are configured for the SRS resource group of each second cell among the at least one second cell, and the time slot offset k' corresponding to the SRS resources in the SRS resource group of the one second cell is the activated time slot offset among the multiple time slot offsets.

[0640] In some embodiments of the present application, one time slot offset is configured for the SRS resource group of each second cell among the at least one second cell, and the one time slot offset is the time slot offset k'.

[0641] In some embodiments of the present application, the third time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0642] It should be understood that the apparatus embodiments and the method embodiments can correspond to each other, and similar descriptions can refer to the method embodiments. Specifically, Figure 28 the network device 500 shown can correspond to the corresponding entity in the method 200 of the embodiments of the present application, and the foregoing and other operations and / or functions of each unit in the network device 500 are respectively for implementing Figure 2 the corresponding processes in the respective methods, and for the sake of brevity, they will not be elaborated here.

[0643] Figure 29 is a schematic block diagram of a terminal device 600 provided by the embodiments of the present application.

[0644] As Figure 29 shown, the terminal device 600 may include:

[0645] A receiving unit 610, configured to receive second indication information for indicating that a sounding reference signal (SRS) on a first cell can be triggered by an aperiodic SRS triggering signaling on at least one third cell, where the second indication information is carried by a media access control control element (MAC CE) signaling.

[0646] In some embodiments of the present application, the second indication information is used to indicate the at least one third cell, where the aperiodic SRS triggering signaling on the at least one third cell is used to trigger the SRS on the first cell.

[0647] In some embodiments of the present application, if the second indication information is used to indicate a second cell group, the at least one third cell is all active cells in the second cell group.

[0648] In some embodiments of the present application, the number of cells in the second cell group is 2, 4, 8, or 32.

[0649] In some embodiments of the present application, if the second indication information is used to indicate a second cell group, the at least one third cell is the first cell and all active cells in the second cell group.

[0650] In some embodiments of the present application, the number of cells in the second cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

[0651] In some embodiments of the present application, the second indication information indicates the second cell group by a bitmap.

[0652] In some embodiments of the present application, the MAC CE signaling includes at least one bit, and each bit in the at least one bit corresponds to a cell in the second cell group, and the value on each bit is used to indicate whether the cell corresponding to each bit belongs to the second cell group.

[0653] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following: an identifier of the first cell, an identifier of a first bandwidth part (BWP) of the first cell, or reserved bits.

[0654] In some embodiments of the present application, the receiving unit 610 is further configured to:

[0655] receive a third radio resource control (RRC) signaling, and switch or determine the length of the at least one bit according to the third RRC signaling.

[0656] In some embodiments of the present application, the second indication information indicates the second cell group by a cell identifier.

[0657] In some embodiments of the present application, the MAC CE signaling includes the identifier of each cell in the second cell group.

[0658] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following:

[0659] The identifier of the first cell;

[0660] The identifier of the first bandwidth part BWP of the first cell;

[0661] First information for indicating the number of cells in the second cell group; or

[0662] Reserved bits.

[0663] In some embodiments of the present application, the receiving unit 610 is further configured to:

[0664] Receive a fourth RRC signaling for configuring at least one cell, where the at least one cell includes the first cell and the at least one third cell.

[0665] In some embodiments of the present application, the SRS resource groups of different cells in the first cell and the at least one third cell are configured by different SRS resource group SRS-ResourceSet signaling, and the SRS resources in different SRS resource groups in the SRS resource group of the first cell and the SRS resource groups of the at least one third cell are configured by different SRS resource SRS-Resource signaling.

[0666] In some embodiments of the present application, the SRS resource group SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured by SRS configuration SRS-Config.

[0667] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one third cell, they are configured by the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource group cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one trigger state among the multiple non-zero trigger states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger state among the multiple non-zero trigger states.

[0668] In some embodiments of the present application, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

[0669] In some embodiments of the present application, N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

[0670] In some embodiments of the present application, the SRS resource group of the first cell is configured with at least one time slot offset; the receiving unit 610 is further configured to:

[0671] Determine a fourth time slot based on the first time slot and the time slot offset k corresponding to the SRS resource group of the first cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource group of the first cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

[0672] On the fourth time slot of the first cell, transmit the SRS corresponding to the SRS resource group of the first cell.

[0673] In some embodiments of the present application, the SRS resource group of the first cell is configured with multiple time slot offsets, and the time slot offset k corresponding to the SRS resource group of the first cell is the activated time slot offset among the multiple time slot offsets.

[0674] In some embodiments of the present application, the SRS resource group of the first cell is configured with one time slot offset, and the one time slot offset is the time slot offset k.

[0675] In some embodiments of the present application, the fourth time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0676] In some embodiments of the present application, the SRS resource groups of different cells among the first cell and the at least one third cell are configured by different SRS-Pos resource group Release 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource groups among the SRS resource group of the first cell and the SRS resource groups of the at least one third cell are configured by different SRS Pos resources Release 16 SRS-PosResource-r16 signaling.

[0677] In some embodiments of the present application, the SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS-Config in the SRS configuration.

[0678] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one third cell, they are configured by the aperiodic SRS resource trigger list version 16 (aperiodicSRS-ResourceTriggerList-r16) in the SRS-PosResourceSet-r16.

[0679] In some embodiments of the present application, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

[0680] In some embodiments of the present application, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

[0681] In some embodiments of the present application, the SRS resources in the SRS resource group of the first cell are configured with at least one time slot offset; the receiving unit 610 is further configured to:

[0682] Determine a fifth time slot based on the first time slot and the time slot offset k' corresponding to the SRS resource in the SRS resource group of the first cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource group of the first cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling;

[0683] On the fifth time slot of the first cell, transmit the SRS corresponding to the SRS resource in the SRS resource group of the first cell.

[0684] In some embodiments of the present application, the SRS resources in the SRS resource group of the first cell are configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resource in the SRS resource group of the first cell is the activated time slot offset among the multiple time slot offsets.

[0685] In some embodiments of the present application, the SRS resource group of the first cell is configured with one time slot offset, and the one time slot offset is the time slot offset k'.

[0686] In some embodiments of the present application, the fifth time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0687] It should be understood that the apparatus embodiments and the method embodiments can correspond to each other, and similar descriptions can refer to the method embodiments. Specifically, Figure 29 the shown terminal device 600 can correspond to the corresponding entity in the method 300 of the embodiments of the present application, and the foregoing and other operations and / or functions of each unit in the terminal device 600 are respectively for implementing Figure 26 the corresponding processes in each method in, for the sake of brevity, will not be described in detail herein.

[0688] Figure 30 is a schematic block diagram of a network device 700 provided by an embodiment of the present application.

[0689] As Figure 30 shown, the network device 700 may include:

[0690] A sending unit 710, configured to send second indication information, where the second indication information is used to indicate that a sounding reference signal SRS on a first cell can be triggered by an aperiodic SRS triggering signaling on at least one third cell, and the second indication information is carried by a media access control control element MAC CE signaling.

[0691] In some embodiments of the present application, the second indication information is used to indicate the at least one third cell, where the aperiodic SRS triggering signaling on the at least one third cell is used to trigger the SRS on the first cell.

[0692] In some embodiments of the present application, if the second indication information is used to indicate a second cell group, the at least one third cell is all active cells in the second cell group.

[0693] In some embodiments of the present application, the number of cells in the second cell group is 2, 4, 8, or 32.

[0694] In some embodiments of the present application, if the second indication information is used to indicate a second cell group, the at least one third cell is the first cell and all active cells in the second cell group.

[0695] In some embodiments of the present application, the number of cells in the second cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

[0696] In some embodiments of the present application, the second indication information indicates the second cell group through a bitmap.

[0697] In some embodiments of the present application, the MAC CE signaling includes at least one bit, each bit in the at least one bit corresponds to a cell in the second cell group, and the value on each bit is used to indicate whether the cell corresponding to each bit belongs to the second cell group.

[0698] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following: the identifier of the first cell, the identifier of the first bandwidth part BWP of the first cell, or reserved bits.

[0699] In some embodiments of the present application, the sending unit 710 is further configured to:

[0700] Send a third RRC signaling, and switch or determine the length of the at least one bit according to the third RRC signaling.

[0701] In some embodiments of the present application, the second indication information indicates the second cell group through a cell identifier.

[0702] In some embodiments of the present application, the MAC CE signaling includes the identifier of each cell in the second cell group.

[0703] In some embodiments of the present application, the MAC CE signaling further includes at least one of the following:

[0704] The identifier of the first cell;

[0705] The identifier of the first bandwidth part BWP of the first cell;

[0706] First information for indicating the number of cells in the second cell group; or

[0707] Reserved bits.

[0708] In some embodiments of the present application, the sending unit 710 is further configured to:

[0709] Send a fourth RRC signaling, where the fourth RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one third cell.

[0710] In some embodiments of the present application, the SRS resource groups of different cells among the first cell and the at least one third cell are configured through different SRS resource group SRS-ResourceSet signals, and the SRS resources in different SRS resource groups among the SRS resource group of the first cell and the SRS resource groups of the at least one third cell are configured through different SRS resource SRS-Resource signals.

[0711] In some embodiments of the present application, the SRS resource set SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured by the SRS configuration SRS-Config.

[0712] In some embodiments of the present application, for multiple triggering states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one third cell, the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource set cell SRS-ResourceSet IE are configured. The aperiodicSRS-ResourceTrigger is used to configure one triggering state among the multiple non-zero triggering states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one triggering state among the multiple non-zero triggering states.

[0713] In some embodiments of the present application, the value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS triggering states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

[0714] In some embodiments of the present application, N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

[0715] In some embodiments of the present application, the SRS resource set of the first cell is configured with at least one time slot offset; the sending unit 710 is further configured to:

[0716] Determine a fourth time slot based on the first time slot and the time slot offset k corresponding to the SRS resource set of the first cell. The first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the first cell is the SRS resource set corresponding to the first value, and the first value is the value of the triggering state in the aperiodic SRS trigger signaling.

[0717] Receive the SRS corresponding to the SRS resource set of the first cell on the fourth time slot of the first cell.

[0718] In some embodiments of the present application, the SRS resource set of the first cell is configured with multiple slot offsets, and the slot offset k corresponding to the SRS resource set of the first cell is the activated slot offset among the multiple slot offsets.

[0719] In some embodiments of the present application, the SRS resource set of the first cell is configured with one slot offset, and the one slot offset is the slot offset k.

[0720] In some embodiments of the present application, the fourth slot is a valid slot after the first slot, and the valid slot is a slot available for transmitting SRS.

[0721] In some embodiments of the present application, the SRS resource sets of different cells in the first cell and the at least one third cell are configured by different SRS-Pos resource set version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource sets in the SRS resource set of the first cell and the SRS resource sets of the at least one third cell are configured by different SRS Pos resources version 16 SRS-PosResource-r16 signaling.

[0722] In some embodiments of the present application, the SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

[0723] In some embodiments of the present application, for multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one third cell, they are configured by the aperiodic SRS resource trigger list version 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

[0724] In some embodiments of the present application, the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

[0725] In some embodiments of the present application, the N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

[0726] In some embodiments of the present application, the SRS resources in the SRS resource set of the first cell are configured with at least one slot offset; the sending unit 710 is further configured to:

[0727] Determine a fifth time slot based on the time slot offset k' corresponding to the SRS resource in the SRS resource group of the first time slot and the first cell, where the first time slot is the time slot where the aperiodic SRS triggering signaling is located, the SRS resource group of the first cell is the SRS resource group corresponding to a first value, and the first value is the value of the triggering state in the aperiodic SRS triggering signaling;

[0728] On the fifth time slot of the first cell, receive the SRS corresponding to the SRS resource in the SRS resource group of the first cell.

[0729] In some embodiments of the present application, the SRS resources in the SRS resource group of the first cell are configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resource in the SRS resource group of the first cell is the activated time slot offset among the multiple time slot offsets.

[0730] In some embodiments of the present application, the SRS resource group of the first cell is configured with one time slot offset, and the one time slot offset is the time slot offset k'.

[0731] In some embodiments of the present application, the fifth time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

[0732] It should be understood that the apparatus embodiments and the method embodiments can correspond to each other, and similar descriptions can refer to the method embodiments. Specifically, Figure 30 the network device 700 shown can correspond to the corresponding entity in the method 300 of the embodiments of the present application, and the foregoing and other operations and / or functions of each unit in the network device 700 are respectively for implementing Figure 26 the corresponding processes in the respective methods in, and for the sake of brevity, will not be described in detail here.

[0733] The communication device of the embodiments of the present application has been described above from the perspective of functional modules. It should be understood that the functional module can be implemented in the form of hardware, or in the form of instructions in software, or in a combination of hardware and software modules.

[0734] Specifically, the steps of the method embodiments in the embodiments of the present application can be completed by the integrated logic circuit in the hardware in the processor and / or the instructions in the form of software. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by the hardware decoding processor, or executed and completed by a combination of the hardware and software modules in the decoding processor.

[0735] Optionally, the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. This storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps in the above method embodiments.

[0736] For example, the receiving unit or the transmitting unit mentioned above can be implemented by a transceiver.

[0737] Figure 31 It is a schematic structural diagram of the communication device 800 according to an embodiment of the present application.

[0738] As Figure 31 shown, the communication device 800 may include a processor 810.

[0739] Among them, the processor 810 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

[0740] Please continue to refer to Figure 31 , the communication device 800 may further include a memory 820.

[0741] Among them, the memory 820 can be used to store indication information, and can also be used to store codes, instructions, etc. executed by the processor 810. Among them, the processor 810 can call and run a computer program from the memory 820 to implement the method in the embodiment of the present application. The memory 820 can be a separate device independent of the processor 810, or can be integrated in the processor 810.

[0742] Please continue to refer to Figure 31 , the communication device 800 may further include a transceiver 830.

[0743] Among them, the processor 810 can control the transceiver 830 to communicate with other devices. Specifically, it can send information or data to other devices, or receive information or data sent by other devices. The transceiver 830 can include a transmitter and a receiver. The transceiver 830 may further include an antenna, and the number of antennas can be one or more.

[0744] It should be understood that the various components in the communication device 800 are connected through a bus system. Among them, the bus system includes not only a data bus, but also a power bus, a control bus, and a status signal bus.

[0745] It should also be understood that the communication device 800 may be the terminal device in the embodiments of the present application, and the communication device 800 can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. That is to say, the communication device 800 in the embodiments of the present application may correspond to the terminal device 400 or the terminal device 600 in the embodiments of the present application, and may correspond to the corresponding subject executing the methods according to the embodiments of the present application. For the sake of brevity, details are not described herein again. Similarly, the communication device 800 may be the network device in the embodiments of the present application, and the communication device 800 can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. That is to say, the communication device 800 in the embodiments of the present application may correspond to the network device 500 or the network device 700 in the embodiments of the present application, and may correspond to the corresponding subject executing the methods according to the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0746] In addition, an embodiment of the present application also provides a chip.

[0747] For example, the chip may be an integrated circuit chip with signal processing capabilities, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The chip may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip. Optionally, the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application.

[0748] Figure 32 It is a schematic structural diagram of a chip 900 according to an embodiment of the present application.

[0749] As Figure 32 shown, the chip 900 includes a processor 910.

[0750] Among them, the processor 910 can call and run a computer program from the memory to implement the methods in the embodiments of the present application.

[0751] Please continue to refer to Figure 32 , the chip 900 may further include a memory 920.

[0752] Among them, the processor 910 can call and run a computer program from the memory 920 to implement the methods in the embodiments of the present application. The memory 920 can be used to store indication information, and can also be used to store codes, instructions, etc. executed by the processor 910. The memory 920 can be an independent device from the processor 910, or can be integrated in the processor 910.

[0753] Please continue to refer to Figure 32 , the chip 900 may further include an input interface 930.

[0754] Among them, the processor 910 can control the input interface 930 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

[0755] Please continue to refer to Figure 32 , the chip 900 may further include an output interface 940.

[0756] Among them, the processor 910 can control the output interface 940 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

[0757] It should be understood that the chip 900 can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application, and can also implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For the sake of brevity, it will not be elaborated here.

[0758] It should also be understood that each component in the chip 900 is connected through a bus system. Among them, the bus system includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.

[0759] The above-mentioned processor may include, but is not limited to:

[0760] A general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and so on.

[0761] The processor can be used to implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The steps of the methods disclosed in combination with the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an erasable programmable memory, a register, etc. This storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the above methods.

[0762] The above-mentioned memory includes, but is not limited to:

[0763] Volatile memory and / or non-volatile memory. Among them, the non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (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 but not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double DataRate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synch link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

[0764] It should be noted that the memories described herein are intended to include these and any other suitable types of memories.

[0765] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program. The computer-readable storage medium stores one or more programs, and the one or more programs include instructions that, when executed by a portable electronic device including a plurality of application programs, can cause the portable electronic device to execute the methods shown in the embodiments of Method 200 or 300.

[0766] Optionally, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, it will not be described in detail here.

[0767] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiment of the present application. For the sake of brevity, it will not be described in detail here.

[0768] An embodiment of the present application also provides a computer program product, including a computer program.

[0769] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0770] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0771] An embodiment of the present application also provides a computer program. When the computer program is executed by a computer, the computer can execute the method shown in Embodiment 200 or 300.

[0772] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0773] In addition, an embodiment of the present application further provides a communication system. The communication system may include the terminal device and the network device involved above to form a communication system 100 as shown in Figure 1 For the sake of brevity, details are not described herein again. It should be noted that terms such as "system" in this article may also be referred to as "network management architecture" or "network system", etc.

[0774] It should also be understood that the terms used in the embodiments of the present application and the appended claims are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application.

[0775] For example, the singular forms of "a", "the", "above-mentioned", and "this" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0776] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in this article can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the embodiments of the present application.

[0777] If it is implemented in the form of software functional units and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories, random access memories, magnetic disks, or optical discs.

[0778] Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0779] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways.

[0780] For example, the division of units, modules, or components in the device embodiments described above is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units, modules, or components can be combined or integrated into another system, or some units, modules, or components can be ignored or not executed.

[0781] Also, for example, the units / modules / components described as separate / display components may or may not be physically separated, that is, they can be located in one place or distributed to multiple network units. Some or all of the units / modules / components can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0782] Finally, it should be noted that the couplings, direct couplings, or communication connections shown or discussed above with each other can be through some interfaces, indirect couplings, or communication connections of devices or units, and can be in electrical, mechanical, or other forms.

[0783] The above content is only the specific implementation manners of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the embodiments of the present application and should be covered by the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that, Comprising: Receiving first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal (SRS) triggering signaling on a first cell is used to trigger SRS on at least one second cell, and the first indication information is carried by a media access control control element (MAC CE) signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes an identifier of the first cell, an identifier of a first bandwidth part (BWP) of the first cell, and reserved bits; The method further includes: Receiving first radio resource control (RRC) signaling, and switching or determining the length of the at least one bit according to the first RRC signaling, so as to switch or determine the format of the MAC CE signaling; Receiving second RRC signaling, where the second RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one second cell; Wherein, before receiving the first indication information, the method further includes: Reporting information through UE capability to indicate support for triggering aperiodic SRS through the first indication information.

2. The method according to claim 1, characterized in that, The first indication information is used to indicate an aperiodic SRS triggering signaling on the first cell or a first BWP of the first cell, and is used to trigger SRS on the at least one second cell corresponding to the first cell or the first BWP.

3. The method according to claim 1, characterized in that, The first indication information is used to indicate a first triggering state, or a first triggering state in an aperiodic SRS triggering signaling on the first cell or a first BWP of the first cell, and is used to trigger SRS on the at least one second cell corresponding to the first triggering state.

4. The method according to claim 3, wherein The first triggering state is a non-zero triggering state.

5. The method according to claim 1, characterized in that, The first indication information is used to indicate an aperiodic SRS triggering signaling on the first cell of the terminal device or the first cell of the target cell group of the terminal device, and is used to trigger SRS on the at least one second cell corresponding to the terminal device or the target cell group.

6. The method according to claim 1, wherein The first indication information is used to indicate the at least one second cell, where the aperiodic SRS triggering signaling on the first cell is used to trigger SRS on the at least one second cell.

7. The method according to claim 6, wherein If the first indication information is used to indicate a first cell group, the at least one second cell is all active cells in the first cell group.

8. The method according to claim 7, wherein The maximum number of cells in the first cell group is 2, 4, 8, or 32.

9. The method according to claim 6, wherein If the first indication information is used to indicate a first cell group, the at least one second cell is the first cell and all active cells in the first cell group.

10. The method according to claim 9, wherein, The maximum number of cells in the first cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

11. The method according to any one of claims 7 to 10, characterized in that, The first indication information indicates the first cell group through a bitmap.

12. The method according to claim 11, wherein Each of the at least one bits corresponds to a cell in the first cell group, and the value on one of the at least one bits is used to indicate whether the cell corresponding to the one bit belongs to the first cell group.

13. The method according to any one of claims 7 to 10, characterized in that The first indication information indicates the first cell group through a cell identifier.

14. The method according to claim 13, wherein The MAC CE signaling includes the identifiers of each cell in the first cell group.

15. The method according to claim 14, wherein The MAC CE signaling further includes: First information, used to indicate the number of cells in the first cell group.

16. The method according to claim 1, wherein The SRS resource groups of different cells among the first cell and the at least one second cell are configured through different SRS resource group SRS-ResourceSet signaling, and the SRS resources in different SRS resource groups among the SRS resource group of the first cell and the SRS resource groups of the at least one second cell are configured through different SRS resource SRS-Resource signaling.

17. The method according to claim 16, wherein The SRS resource group SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured through SRS configuration SRS-Config.

18. The method according to claim 16, characterized in that, For multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one second cell, they are configured through the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource group cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one trigger state among multiple non-zero trigger states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger state among the multiple non-zero trigger states.

19. The method according to claim 18, wherein The value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

20. The method according to claim 19, wherein The N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

21. The method according to claim 16, wherein Each SRS resource group of each second cell in the at least one second cell is configured with at least one time slot offset; the method includes: Determining a second time slot based on the first time slot and the time slot offset k corresponding to the SRS resource group of one second cell in the at least one second cell. The first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource group of the one second cell is the SRS resource group corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling. On the second time slot of the one second cell, transmitting the SRS corresponding to the SRS resource group of the one second cell.

22. The method according to claim 20, characterized in that, Each SRS resource set in each of the at least one second cell is configured with a plurality of slot offsets, and the slot offset k corresponding to the SRS resource set of one second cell is the activated slot offset among the plurality of slot offsets.

23. The method according to claim 22, wherein Each SRS resource set in each of the at least one second cell is configured with one slot offset, and the one slot offset is the slot offset k.

24. The method according to claim 21, wherein The second time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

25. The method according to claim 1, characterized in that The SRS resource sets of different cells in the first cell and the at least one second cell are configured by different SRS-Pos resource set version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource sets in the SRS resource set of the first cell and the SRS resource sets of the at least one second cell are configured by different SRS Pos resources version 16 SRS-PosResource-r16 signaling.

26. The method according to claim 25, wherein The SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

27. The method according to claim 26, wherein For the multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one second cell, it is configured by the aperiodic SRS resource trigger list version 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

28. The method according to claim 27, wherein The value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

29. The method according to claim 28, wherein, The N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

30. The method according to claim 24, wherein Each SRS resource set in each of the at least one second cell is configured with at least one slot offset; the method further includes: Determine a third time slot based on the first time slot and the slot offset k' corresponding to the SRS resource in the SRS resource set of one second cell in the at least one second cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the one second cell is the SRS resource set corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling; On the third time slot of the one second cell, transmit the SRS corresponding to the SRS resource in the SRS resource set of the one second cell.

31. The method according to claim 29, characterized in that, Each SRS resource set in each of the at least one second cell is configured with a plurality of slot offsets, and the slot offset k' corresponding to the SRS resource in the SRS resource set of one second cell is the activated slot offset among the plurality of slot offsets.

32. The method according to claim 30, wherein Each SRS resource set in each of the at least one second cell is configured with a slot offset, and the slot offset is the slot offset k'.

33. The method according to claim 30, wherein The third slot is a valid slot after the first slot, and the valid slot is a slot available for transmitting SRS.

34. A wireless communication method, characterized in that, including: Sending first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal (SRS) triggering signaling on a first cell is used to trigger SRS on at least one second cell, and the first indication information is carried by a media access control control element (MAC CE) signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes an identifier of the first cell, an identifier of a first bandwidth part (BWP) of the first cell, and reserved bits; The method further includes: Sending first RRC signaling, and switching or determining the length of the at least one bit according to the first RRC signaling, so as to switch or determine the format of the MAC CE signaling; Sending second RRC signaling, where the second RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one second cell; Wherein, before sending the first indication information, the method further includes: Receiving information reported by a terminal device through UE capability to indicate support for triggering aperiodic SRS through the first indication information.

35. The method according to claim 34, characterized in that, The first indication information is used to indicate an aperiodic SRS triggering signaling on the first cell or a first bandwidth part (BWP) of the first cell, and is used to trigger SRS on the at least one second cell corresponding to the first cell or the first BWP.

36. The method according to claim 34, characterized in that, The first indication information is used to indicate a first trigger state, or a first trigger state in an aperiodic SRS triggering signaling on the first cell or a first bandwidth part (BWP) of the first cell, and is used to trigger SRS on the at least one second cell corresponding to the first trigger state.

37. The method according to claim 36, wherein, The first trigger state is a non-zero trigger state.

38. The method according to claim 34, wherein The first indication information is used to indicate an aperiodic SRS triggering signaling on the first cell of the terminal device or the first cell of the target cell group of the terminal device, and is used to trigger SRS on the at least one second cell corresponding to the terminal device or the target cell group.

39. The method according to claim 34, wherein The first indication information is used to indicate the at least one second cell, wherein the aperiodic SRS triggering signaling on the first cell is used to trigger SRS on the at least one second cell.

40. The method according to claim 39, characterized in that, If the first indication information is used to indicate a first cell group, the at least one second cell is all active cells in the first cell group.

41. The method according to claim 40, characterized in that, The maximum number of cells in the first cell group is 2, 4, 8, or 32.

42. The method according to claim 39, wherein If the first indication information is used to indicate a first cell group, the at least one second cell is the first cell and all active cells in the first cell group.

43. The method according to claim 42, characterized in that, The maximum number of cells in the first cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

44. The method according to any one of claims 40 to 43, characterized in that, The first indication information indicates the first cell group by means of a bitmap.

45. The method according to claim 44, wherein, Each bit in the at least one bit corresponds to a cell in the first cell group, and the value of one bit in the at least one bit is used to indicate whether the cell corresponding to the one bit belongs to the first cell group.

46. The method according to claim 40, wherein The first indication information indicates the first cell group by means of a cell identifier.

47. The method according to claim 46, wherein The MAC CE signaling includes the identifiers of each cell in the first cell group.

48. The method according to claim 47, characterized in that, The MAC CE signaling further includes: First information, which is used to indicate the number of cells in the first cell group.

49. The method according to claim 34, characterized in that, The SRS resource groups of different cells among the first cell and the at least one second cell are configured by different SRS resource group SRS-ResourceSet signaling, and the SRS resources in different SRS resource groups among the SRS resource group of the first cell and the SRS resource groups of the at least one second cell are configured by different SRS resource SRS-Resource signaling.

50. The method according to claim 49, characterized in that, The SRS resource group SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured by SRS configuration SRS-Config.

51. The method according to claim 49, characterized in that, For multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one second cell, they are configured by the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource group cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one trigger state among multiple non-zero trigger states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger state among the multiple non-zero trigger states.

52. The method according to claim 51, wherein, The value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

53. The method according to claim 52, wherein N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

54. The method according to claim 49, characterized in that, The SRS resource group of each second cell in the at least one second cell is configured with at least one time slot offset; the method includes: Determine a second time slot based on a time slot offset k corresponding to an SRS resource group of a first time slot and a second cell among the at least one second cell, where the first time slot is the time slot in which the aperiodic SRS triggering signaling is located, the SRS resource group of the second cell is the SRS resource group corresponding to a first value, and the first value is the value of the triggering state in the aperiodic SRS triggering signaling; On the second time slot of the second cell, receive the SRS corresponding to the SRS resource group of the second cell.

55. The method according to claim 54, characterized in that, Each SRS resource group of each second cell among the at least one second cell is configured with multiple time slot offsets, and the time slot offset k corresponding to the SRS resource group of the second cell is the activated time slot offset among the multiple time slot offsets.

56. The method according to claim 54, wherein, Each SRS resource group of each second cell among the at least one second cell is configured with one time slot offset, and the one time slot offset is the time slot offset k.

57. The method according to claim 54, characterized in that, The second time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

58. The method according to claim 34, wherein The SRS resource groups of different cells among the first cell and the at least one second cell are configured by different SRS-Pos resource set version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource groups among the SRS resource groups of the first cell and the at least one second cell are configured by different SRS Pos resources version 16 SRS-PosResource-r16 signaling.

59. The method according to claim 58, wherein The SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

60. The method according to claim 58, wherein For multiple triggering states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one second cell, configure through the aperiodic SRS resource trigger list version 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

61. The method according to claim 60, wherein The value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS triggering states.

62. The method according to claim 61, wherein The N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

63. The method according to claim 58, wherein Each SRS resource in the SRS resource group of each second cell among the at least one second cell is configured with at least one time slot offset; the method further includes: Determine a third time slot based on a time slot offset k' corresponding to the sounding reference signal (SRS) resources in the SRS resource set of a second cell among the first time slot and the at least one second cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the second cell is the SRS resource set corresponding to a first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling; On the third time slot of the second cell, receive the SRS corresponding to the SRS resources in the SRS resource set of the second cell.

64. The method according to claim 63, characterized in that, Each SRS resource set of each of the at least one second cell is configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resources in the SRS resource set of the second cell is the activated time slot offset among the multiple time slot offsets.

65. The method according to claim 63, wherein Each SRS resource set of each of the at least one second cell is configured with one time slot offset, and the one time slot offset is the time slot offset k'.

66. The method according to claim 63, wherein The third time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

67. A wireless communication method, characterized in that, Includes: Receive second indication information, which is used to indicate that the sounding reference signal SRS on a first cell can be triggered by an aperiodic SRS trigger signaling on at least one third cell, and the second indication information is carried by a media access control control element (MAC CE) signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes the identifier of the first cell, the identifier of the first bandwidth part (BWP) of the first cell, and reserved bits; The method further includes: Receive a third RRC signaling, and switch or determine the length of the at least one bit according to the third RRC signaling, so as to switch or determine the format of the MAC CE signaling; Receive a fourth RRC signaling, which is used to configure at least one cell, and the at least one cell includes the first cell and the at least one third cell; Wherein, before receiving the second indication information, the method further includes: Report information through UE capability to indicate support for triggering aperiodic SRS through the second indication information.

68. The method according to claim 67, characterized in that, The second indication information is used to indicate the at least one third cell, wherein the aperiodic SRS trigger signaling on the at least one third cell is used to trigger the SRS on the first cell.

69. The method according to claim 68, characterized in that, If the second indication information is used to indicate a second cell group, the at least one third cell is all active cells in the second cell group.

70. The method according to claim 69, wherein The number of cells in the second cell group is 2, 4, 8, or 32.

71. The method according to claim 68, wherein If the second indication information is used to indicate a second cell group, the at least one third cell is the first cell and all active cells in the second cell group.

72. The method according to claim 71, wherein The number of cells in the second cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

73. The method according to claim 69, wherein The second indication information indicates the second cell group through a bitmap.

74. The method according to claim 73, characterized in that, Each bit in the at least one bit corresponds to a cell in the second cell group, and the value of each bit is used to indicate whether the cell corresponding to each bit belongs to the second cell group.

75. The method according to any one of claims 69 to 72, characterized in that, The second indication information indicates the second cell group through a cell identifier.

76. The method according to claim 75, wherein The MAC CE signaling includes the identifier of each cell in the second cell group.

77. The method according to claim 76, wherein The MAC CE signaling further includes: First information, which is used to indicate the number of cells in the second cell group.

78. The method according to claim 67, wherein The SRS resource groups of different cells among the first cell and the at least one third cell are configured through different SRS resource group SRS-ResourceSet signaling, and the SRS resources in different SRS resource groups among the SRS resource group of the first cell and the SRS resource groups of the at least one third cell are configured through different SRS resource SRS-Resource signaling.

79. The method according to claim 78, characterized in that, The SRS resource group SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured through SRS configuration SRS-Config.

80. The method according to claim 78, characterized in that, For multiple trigger states corresponding to the SRS resource group of the first cell and the SRS resource groups of the at least one third cell, they are configured through the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource group cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one trigger state among multiple non-zero trigger states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one trigger state among the multiple non-zero trigger states.

81. The method according to claim 80, characterized in that, The value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS trigger states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

82. The method according to claim 81, wherein N is greater than or equal to 4; if N is greater than 4, N is indicated by the network device to the terminal device, or N is determined based on the capabilities reported by the terminal device to the network device.

83. The method according to claim 78, characterized in that, The SRS resource group of the first cell is configured with at least one time slot offset; the method further includes: Determining a fourth time slot based on a first time slot and a time slot offset k corresponding to the SRS resource group of the first cell. The first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource group of the first cell is the SRS resource group corresponding to a first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling. On the fourth time slot of the first cell, transmit the SRS corresponding to the SRS resource set of the first cell.

84. The method according to claim 83, characterized in that, The SRS resource set of the first cell is configured with multiple time slot offsets, and the time slot offset k corresponding to the SRS resource set of the first cell is the activated time slot offset among the multiple time slot offsets.

85. The method according to claim 83, wherein The SRS resource set of the first cell is configured with one time slot offset, and the one time slot offset is the time slot offset k.

86. The method according to claim 83, characterized in that, The fourth time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

87. The method according to claim 78, wherein The SRS resource sets of different cells among the first cell and the at least one third cell are configured by different SRS-Pos resource set version 16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource sets among the SRS resource set of the first cell and the SRS resource sets of the at least one third cell are configured by different SRS Pos resources version 16 SRS-PosResource-r16 signaling.

88. The method according to claim 87, characterized in that, The SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

89. The method according to claim 87, characterized in that, For multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one third cell, configure through the aperiodic SRS resource trigger list version 16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

90. The method according to claim 89, wherein The value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states.

91. The method according to claim 90, characterized in that, The N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

92. The method according to claim 87, characterized in that, The SRS resources in the SRS resource set of the first cell are configured with at least one time slot offset; the method further includes: Determine a fifth time slot based on the first time slot and the time slot offset k' corresponding to the SRS resources in the SRS resource set of the first cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the first cell is the SRS resource set corresponding to the first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling; On the fifth time slot of the first cell, transmit the SRS corresponding to the SRS resources in the SRS resource set of the first cell.

93. The method according to claim 92, characterized in that, The SRS resources in the SRS resource set of the first cell are configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resources in the SRS resource set of the first cell is the activated time slot offset among the multiple time slot offsets.

94. The method according to claim 92, characterized in that, The SRS resource set of the first cell is configured with one time slot offset, and the one time slot offset is the time slot offset k'.

95. The method according to claim 92, wherein The fifth time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

96. A wireless communication method, characterized in that, Including: Sending second indication information, where the second indication information is used to indicate that the sounding reference signal SRS on a first cell can be triggered by an aperiodic SRS triggering signaling on at least one third cell, and the second indication information is carried by a media access control control element MAC CE signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes an identifier of the first cell, an identifier of a first bandwidth part BWP of the first cell, and reserved bits; The method further includes: Sending a third RRC signaling to switch or determine the length of the at least one bit according to the third RRC signaling, so as to switch or determine the format of the MAC CE signaling; Sending a fourth RRC signaling, where the fourth RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one third cell; Wherein, before sending the second indication information, the method further includes: Receiving information reported by a terminal device through UE capability to indicate support for triggering an aperiodic SRS through the second indication information.

97. The method according to claim 96, characterized in that, The second indication information is used to indicate the at least one third cell, wherein the aperiodic SRS triggering signaling on the at least one third cell is used to trigger the SRS on the first cell.

98. The method according to claim 97, characterized in that, If the second indication information is used to indicate a second cell group, the at least one third cell is all active cells in the second cell group.

99. The method according to claim 98, characterized in that, The number of cells in the second cell group is 2, 4, 8, or 32.

100. The method according to claim 97, characterized in that, If the second indication information is used to indicate a second cell group, the at least one third cell is the first cell and all active cells in the second cell group.

101. The method according to claim 100, wherein The number of cells in the second cell group is 1, 2, 3, 4, 7, 8, 31, or 32.

102. The method according to claim 98, characterized in that, The second indication information indicates the second cell group through a bitmap.

103. The method according to claim 102, characterized in that, The MAC CE signaling includes at least one bit, and each bit in the at least one bit corresponds to a cell in the second cell group, and the value on each bit is used to indicate whether the cell corresponding to each bit belongs to the second cell group.

104. The method according to any one of claims 98 to 101, characterized in that, The second indication information indicates the second cell group through a cell identifier.

105. The method according to claim 104, characterized in that, The MAC CE signaling includes the identifier of each cell in the second cell group.

106. The method according to claim 103, wherein The MAC CE signaling further includes: First information, used to indicate the number of cells in the second cell group.

107. The method according to claim 96, wherein The SRS resource groups of different cells in the first cell and the at least one third cell are configured by different SRS resource group SRS-ResourceSet signaling, and the SRS resources in different SRS resource groups in the SRS resource group of the first cell and the SRS resource groups of the at least one third cell are configured by different SRS resource SRS-Resource signaling.

108. The method according to claim 107, characterized in that, The SRS resource set SRS-ResourceSet signaling or the SRS resource SRS-Resource signaling is configured by the SRS configuration SRS-Config.

109. The method according to claim 107, wherein For multiple triggering states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one third cell, it is configured through the aperiodic SRS resource trigger aperiodicSRS-ResourceTrigger and / or the aperiodic SRS resource trigger list aperiodicSRS-ResourceTriggerList in the SRS resource set cell SRS-ResourceSet IE. The aperiodicSRS-ResourceTrigger is used to configure one triggering state among multiple non-zero triggering states, and the aperiodicSRS-ResourceTriggerList is used to configure one or more than one triggering state among the multiple non-zero triggering states. The method according to claim 109, characterized in that, The value of the aperiodicSRS-ResourceTrigger is an integer from 1 to N-1, where N represents the number of aperiodic SRS triggering states; the value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1.

111. The method according to claim 110, wherein The N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

112. The method according to claim 107, characterized in that, The SRS resource set of the first cell is configured with at least one time slot offset; the method further includes: Determining a fourth time slot based on the first time slot and the time slot offset k corresponding to the SRS resource set of the first cell. The first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the first cell is the SRS resource set corresponding to the first value, and the first value is the value of the triggering state in the aperiodic SRS trigger signaling. Receiving the SRS corresponding to the SRS resource set of the first cell on the fourth time slot of the first cell.

113. The method according to claim 112, characterized in that, The SRS resource set of the first cell is configured with multiple time slot offsets, and the time slot offset k corresponding to the SRS resource set of the first cell is the activated time slot offset among the multiple time slot offsets.

114. The method according to claim 112, characterized in that, The SRS resource set of the first cell is configured with one time slot offset, and the one time slot offset is the time slot offset k.

115. The method according to claim 112, characterized in that, The fourth time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

116. The method according to claim 96, characterized in that, The SRS resource sets of different cells in the first cell and the at least one third cell are configured by different SRS-Pos resource set R16 SRS-PosResourceSet-r16 signaling, and the SRS resources of different SRS resource sets in the SRS resource set of the first cell and the SRS resource sets of the at least one third cell are configured by different SRS Pos resource R16 SRS-PosResource-r16 signaling.

117. The method according to claim 116, wherein The SRS-PosResourceSet-r16 signaling and SRS-PosResource-r16 are configured by SRS configuration SRS-Config.

118. The method according to claim 116, wherein For multiple trigger states corresponding to the SRS resource set of the first cell and the SRS resource sets of the at least one third cell, they are configured by the aperiodic SRS resource trigger list R16 aperiodicSRS-ResourceTriggerList-r16 in the SRS-PosResourceSet-r16.

119. The method according to claim 118, wherein The value of each element in the aperiodicSRS-ResourceTriggerLis is an integer from 1 to N-1; the N represents the number of aperiodic SRS trigger states. The method according to claim 119, wherein The N is greater than or equal to 4; if N is greater than 4, the N is indicated by the network device to the terminal device, or the N is determined based on the capabilities reported by the terminal device to the network device.

121. The method according to claim 116, characterized in that, The SRS resources in the SRS resource set of the first cell are configured with at least one time slot offset; the method further includes: Determining a fifth time slot based on a first time slot and a time slot offset k' corresponding to the SRS resources in the SRS resource set of the first cell, where the first time slot is the time slot where the aperiodic SRS trigger signaling is located, the SRS resource set of the first cell is the SRS resource set corresponding to a first value, and the first value is the value of the trigger state in the aperiodic SRS trigger signaling; Receiving, on the fifth time slot of the first cell, the SRS corresponding to the SRS resources in the SRS resource set of the first cell.

122. The method according to claim 121, characterized in that, The SRS resources in the SRS resource set of the first cell are configured with multiple time slot offsets, and the time slot offset k' corresponding to the SRS resources in the SRS resource set of the first cell is the activated time slot offset among the multiple time slot offsets. The method according to claim 121, characterized in that The SRS resource set of the first cell is configured with one time slot offset, and the one time slot offset is the time slot offset k'.

124. The method according to claim 121, wherein The fifth time slot is a valid time slot after the first time slot, and the valid time slot is a time slot available for transmitting SRS.

125. A terminal device, characterized in that, Including: A receiving unit, configured to receive first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal SRS trigger signaling on a first cell is used to trigger SRS on at least one second cell, and the first indication information is carried by media access control control element MAC CE signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes an identifier of the first cell, an identifier of a first bandwidth part BWP of the first cell, and reserved bits; The receiving unit is further configured to: Receive a first RRC signaling, and switch or determine the length of the at least one bit according to the first RRC signaling, so as to switch or determine the format of the MAC CE signaling; Receive a second RRC signaling, where the second RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one second cell; Wherein, before receiving the first indication information, the terminal device further reports information through UE capability to indicate that the terminal device supports triggering an aperiodic SRS through the first indication information.

126. A network device, characterized in that, Comprising: A sending unit, configured to send a first indication information, where the first indication information is used to indicate that an aperiodic sounding reference signal SRS triggering signaling on a first cell is used to trigger an SRS on at least one second cell, and the first indication information is carried by a media access control control element MAC CE signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes an identifier of the first cell, an identifier of a first bandwidth part BWP of the first cell, and reserved bits; The sending unit is further configured to: Send a first RRC signaling, and switch or determine the length of the at least one bit according to the first RRC signaling, so as to switch or determine the format of the MAC CE signaling; Send a second RRC signaling, where the second RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one second cell; Wherein, before sending the first indication information, the network device further receives information reported by the terminal device through UE capability to indicate support for triggering an aperiodic SRS through the first indication information.

127. A terminal device, characterized in that, Comprising: A receiving unit, configured to receive a second indication information, where the second indication information is used to indicate that a sounding reference signal SRS on a first cell can be triggered by an aperiodic SRS triggering signaling on at least one third cell, and the second indication information is carried by a media access control control element MAC CE signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes an identifier of the first cell, an identifier of a first bandwidth part BWP of the first cell, and reserved bits; The receiving unit is further configured to: Receive a third RRC signaling, and switch or determine the length of the at least one bit according to the third RRC signaling, so as to switch or determine the format of the MAC CE signaling; Receive a fourth RRC signaling, where the fourth RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one third cell; Wherein, before receiving the second indication information, the terminal device also reports information through UE capability to indicate that the terminal device supports triggering the aperiodic SRS through the second indication information.

128. A network device, characterized in that, Comprising: A sending unit, configured to send second indication information, where the second indication information is used to indicate that the sounding reference signal SRS on a first cell can be triggered by an aperiodic SRS trigger signaling on at least one third cell, and the second indication information is carried by a media access control control element MAC CE signaling; Wherein, the MAC CE signaling includes at least one bit, and the MAC CE signaling further includes an identifier of the first cell, an identifier of a first bandwidth part BWP of the first cell, and reserved bits; The sending unit is further configured to: Send a third RRC signaling to switch or determine the length of the at least one bit according to the third RRC signaling, so as to switch or determine the format of the MAC CE signaling; Send a fourth RRC signaling, where the fourth RRC signaling is used to configure at least one cell, and the at least one cell includes the first cell and the at least one third cell; Wherein, before sending the second indication information, the network device also receives information reported by the terminal device through UE capability to indicate support for triggering the aperiodic SRS through the second indication information.

129. A terminal device, characterized in that, Comprising: A processor, a memory, and a transceiver, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 33.

130. A network device, characterized in that, Comprising: A processor, a memory, and a transceiver, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 34 to 66.

131. A terminal device, characterized in that, Comprising: A processor, a memory, and a transceiver, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 67 to 95.

132. A network device, characterized in that, Comprising: A processor, a memory, and a transceiver, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 96 to 124.

133. A chip, characterized in that, Comprising: A processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 33, the method according to any one of claims 34 to 66, the method according to any one of claims 67 to 95, or the method according to any one of claims 96 to 124.

134. A computer-readable storage medium, characterized in that, For storing a computer program, where the computer program causes a computer to execute the method according to any one of claims 1 to 33, the method according to any one of claims 34 to 66, the method according to any one of claims 67 to 95, or the method according to any one of claims 96 to 124.

135. A computer program product, characterized in that, Comprising computer program instructions which cause a computer to execute the method according to any one of claims 1 to 33, the method according to any one of claims 34 to 66, the method according to any one of claims 67 to 95, or the method according to any one of claims 96 to 124.

Images