User equipment, base station, and wireless communication method for srs transmission

Abstract

The present application provides a user equipment (UE), a base station and a wireless communication method for sounding reference signal (SRS) transmission. The wireless communication method performed by the UE comprises configuring, by a base station, a SRS resource configuration and / or a SRS resource set configuration; and applying, by the UE, a SRS transmission, wherein the UE is equipped with one or more panel entities, and the SRS transmission comprises an association between the panel entities and the SRS resources, a spatial relation for a semi-persistent (SP) SRS transmission, and / or a spatial relation for an aperiodic (AP) SRS transmission. This can solve the problems in the prior art, provide an association between UE panel entities and SRS resources, provide a spatial relation for a SP SRS transmission, provide a spatial relation for an AP SRS transmission, and / or provide good communication performance.

Description

Technical Field

[0001] This invention relates to the field of wireless communication systems, and more particularly to a user equipment (UE), a base station, and a wireless communication method for transmitting a sounding reference signal (SRS). Furthermore, this invention relates to wireless communication systems operating in multiple-input multiple-output (MIMO) systems, and more specifically, the object of this invention is to provide improvements for spatial relationships in SRS transmission. This invention proposes several methods of particular interest for enhancing support for spatial relationships in SRS transmission. Background Technology

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems, such as Long Term Evolution (LTE), and fifth-generation (5G) systems, which may be referred to as New Radio (NR). A wireless multiple access communication system may include multiple base stations or network access nodes, each supporting communication from multiple communication devices simultaneously, which may also be referred to as user equipment (UE). The wireless communication network may include base stations capable of supporting UE communication. UEs can communicate with base stations via downlink (DL) and uplink (UL). DL refers to the communication link from the base station to the UE, and UL refers to the communication link from the UE to the base station.

[0003] To leverage multipath propagation, MIMO is a method that uses multiple transmit and receive antennas to multiply the capacity of a radio link. MIMO refers to a practical technique that deploys multiple antennas at the transmitter and receiver to simultaneously transmit and receive multiple data signals on the same wireless channel, significantly improving spectral efficiency.

[0004] The UE implements multiple panels, and one or more panel entities can be activated at a time. If one or more panel entities are used to transmit the sounding reference signal (SRS), it is necessary to determine the alignment of the panel entities used to transmit the SRS between the base station and the UE.

[0005] Therefore, there is a need for a user equipment (UE), base station, and wireless communication method that can solve the problems in the prior art, provide the association between UE panel entities and SRS resources, provide spatial relationships for SP SRS transmission, provide spatial relationships for AP SRS transmission, and / or provide good communication performance. Summary of the Invention

[0006] The purpose of this invention is to propose a wireless communication method for user equipment (UE), base station, and sounding reference signal (SRS) transmission, which can solve the problems in the prior art, provide the association between UE panel entities and SRS resources, provide spatial relationships for SP SRS transmission, provide spatial relationships for APSRS transmission, and / or provide good communication performance.

[0007] In a first aspect of the invention, a wireless communication method for SRS transmission performed by a UE includes configuring SRS resource configuration and / or SRS resource set configuration by a base station; and applying SRS transmission by the UE, wherein the UE is equipped with one or more panel entities, and the SRS transmission includes associations between the panel entities and SRS resources, spatial relationships of semi-persistent (SP) SRS transmissions, and / or spatial relationships of aperiodic (AP) SRS transmissions.

[0008] In a second aspect of the invention, a wireless communication method for SRS transmission performed by a base station includes configuring SRS resource configuration and / or SRS resource set configuration for a UE and controlling the UE to apply SRS transmission, wherein the UE is equipped with one or more panel entities, and the SRS transmission includes associations between the panel entities and SRS resources, spatial relationships of SP SRS transmissions, and / or spatial relationships of AP SRS transmissions.

[0009] In a third aspect of the invention, a user equipment (UE) includes: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to configure SRS resource configuration and / or SRS resource set configuration by a base station. The processor is configured to apply SRS transmissions, wherein the UE is equipped with one or more panel entities, and the SRS transmissions include associations between the panel entities and SRS resources, spatial relationships of semi-persistent (SP) SRS transmissions, and / or spatial relationships of aperiodic (AP) SRS transmissions.

[0010] In a fourth aspect of the invention, a base station includes: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to configure SRS resource configuration and / or SRS resource set configuration for a UE and to control the UE to perform SRS transmissions, wherein the UE is equipped with one or more panel entities, and the SRS transmissions include associations between the panel entities and SRS resources, spatial relationships of SP SRS transmissions, and / or spatial relationships of AP SRS transmissions.

[0011] In a fifth aspect of the invention, thereon a non-transitory machine-readable storage medium having instructions stored thereon, which, when executed by a computer, cause the computer to perform the above-described method.

[0012] A sixth aspect of this application provides a chip including a processor configured to invoke and run a computer program stored in a memory to cause a device on which the chip is mounted to perform the methods described above.

[0013] A seventh aspect of this application provides a computer-readable storage medium storing a computer program, wherein the computer program causes a computer to perform the above-described method.

[0014] An eighth aspect of this application provides a computer program product including a computer program that causes a computer to perform the methods described above.

[0015] A ninth aspect of this application provides a computer program that causes a computer to perform the above-described method. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or related technologies, the accompanying drawings are briefly described below. Obviously, the drawings are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any prerequisites.

[0017] Figure 1 This is a block diagram of one or more user equipment (UE) and base station (e.g., gNB) communicating in a communication network system according to an embodiment of the present invention.

[0018] Figure 2 This is a flowchart illustrating a wireless communication method performed by a UE for transmitting a sounding reference signal (SRS) according to an embodiment of the present invention.

[0019] Figure 3 This is a flowchart illustrating a wireless communication method for SRS transmission performed by a base station according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram illustrating an example of SRS transmission based on multiple TRP / panels according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram illustrating an example of SRS transmission based on a single TRP / panel according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram illustrating an example of applying UL TCI based solely on DCI application time according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram illustrating an example of an application based on an embodiment of the present invention using UL TCI based solely on the MAC CE activation time.

[0024] Figure 8 This is a schematic diagram illustrating an example of applying UL TCI based on a larger value of DCI application time according to an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram illustrating an example of applying a UL TCI based on a larger value of the MAC CE activation time according to an embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram illustrating an example of applying spatial relationships based on the latest DCI according to an embodiment of the present invention.

[0027] Figure 11 This is a schematic diagram illustrating an example of applying spatial relationships based on MAC CE according to an embodiment of the present invention.

[0028] Figure 12 This is a schematic diagram illustrating an example of applying spatial relationships based on the latest DCI according to an embodiment of the present invention.

[0029] Figure 13 This is a schematic diagram illustrating an example of the application of spatial relationships based on the latest MAC CE according to an embodiment of the present invention.

[0030] Figure 14 This is a schematic diagram illustrating an example of SP SRS activation / deactivation of MAC CE based on an embodiment of the present invention.

[0031] Figure 15 This is a schematic diagram illustrating an example of SP SRS activation / deactivation of MAC CE based on an embodiment of the present invention.

[0032] Figure 16 This is a schematic diagram illustrating an example of applying spatial relationships after the MAC CE activation time according to an embodiment of the present invention.

[0033] Figure 17 This is a schematic diagram illustrating an example of applying spatial relationships without a MAC CE update command according to an embodiment of the present invention.

[0034] Figure 18 This is a block diagram of a wireless communication system according to an embodiment of the present invention. Detailed Implementation

[0035] The technical aspects, structural features, objectives, and effects of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Specifically, the terminology used in the embodiments of the present invention is only used to describe the purpose of a particular embodiment and is not intended to limit the present invention.

[0036] For the Rel-17 Unified TCI framework, the TCI can be dynamically indicated by the DCI or MAC CE. Regarding the UL TCI state, the ULTCI provides a source reference for determining the UL channel of the UL TX spatial filter, where the UL TCI can be a joint TCI state or a separate UL TCI state. For the spatial relationships of the SP SRS in Rel-15 / 16, they are indicated by the SP SRS activation / deactivation MAC CE. Therefore, to comply with the Rel-17 Unified TCI framework, the spatial relationships of the SPs need to be designed. In Rel-15 / 16, the spatial relationships of AP SRS resources can be updated via the enhanced SP / AP SRS spatial relationship indication MAC CE. In the Rel-17 Unified TCI framework, the UL TCI can be dynamically changed by the DCI or MAC CE. Therefore, to apply the relationships from the UL TCI, an AP SRS triggering mechanism and spatial relationships applied to the AP SRS need to be designed.

[0037] In the RAN1#103-e meeting, five use cases were discussed regarding fast uplink panel selection, with detailed protocols as follows: In the Rel-17 enhancements for facilitating fast uplink panel selection, the following use cases are assumed: 1. MPE mitigation. 2. UE power saving. 3. UL interference management. 4. Support for different configurations across panels. 5. UL mTRP.

[0038] In the RAN1#103-e meeting, UL TCI can be carried by DCI or MAC CE, with the following specific protocols: Regarding beam indication signaling media supporting joint or individual DL / UL beam indication in the Rel.17 unified TCI framework: Support L1-based beam indication using at least UE-specific (unicast) DCI to indicate joint or individual DL / UL beam indication from active TCI states. Existing DCI formats 1_1 and 1_2 are reused for beam indication. A mechanism is supported for UE confirmation of successful beam indication decoding. The ACK / NAK of the PDSCH scheduled by the DCI carrying the beam indication can also be used as the ACK of the DCI. FFS: Whether any additional specification support is required. Similar to Rel.15 / 16, support for activating one or more TCI states via MAC CE: At least for a single active TCI state, the active TCI state is applied. The content of the MAC CE is determined based on the results of Question 1. FFS: If supported, the default TCI state is used when the MAC CE activates multiple TCI states. Note: Support for single TRP or multiple TRP has no impact. FFS: Additional enhancements, such as L1-based beam indication with group common DCI. FFS: Whether Rel.17 beam indication can also be applied to beam indication of a single channel (e.g., PDSCH only, single CORESET) or a subset of channels. FFS: Additional details on extending support for L1-based beam indication when configuring separate UL (with DL) common beam indication.

[0039] To address potential problems associated with applying spatial relationships to SRS transmission, some embodiments of the present invention propose exemplary methods and provide a framework. The aim of some embodiments of the present invention is to provide improvements to spatial relationships in SRS transmission. The present invention proposes some methods of particular interest for enhancing support for spatial relationships in SRS transmission.

[0040] Figure 1As shown, in some embodiments, one or more user equipment (UE) 10 and base station (e.g., gNB) 20 for communication in a communication network system 30 according to embodiments of the present invention are provided. The communication network system 30 includes one or more UEs 10 and base station 20. One or more UEs 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and transceiver 13. The base station 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 12 and transceiver 13. The processor 11 or 21 may be configured to implement the functions, processes, and / or methods proposed herein. A wireless interface protocol layer may be implemented in the processor 11 or 21. The memory 12 or 22 is operatively coupled to the processor 11 or 21 and stores various information to operate the processor 11 or 21. The transceiver 13 or 23 is operatively coupled to the processor 11 or 21 and transmits and / or receives radio signals.

[0041] Processor 11 or 21 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and / or data processing devices. Memory 12 or 22 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and / or other storage devices. Transceiver 13 or 23 may include baseband circuitry for processing radio frequency signals. When embodiments are implemented in software, the techniques described herein can be implemented using modules (e.g., processes, functions, etc.) that perform the functions described herein. These modules may be stored in memory 12 or 22 and executed by processor 11 or 21. Memory 12 or 22 may be implemented within or outside processor 11 or 21, in which case memory 12 or 22 may be communicatively coupled to processor 11 or 21 via various means known in the art.

[0042] In some embodiments, the processor 11 is configured to configure SRS resource configuration and / or SRS resource set configuration by the base station 20. The processor 11 is configured to apply SRS transmissions, wherein the UE is equipped with one or more panel entities, and the SRS transmissions include associations between the panel entities and SRS resources, spatial relationships for semi-persistent (SP) SRS transmissions, and / or spatial relationships for aperiodic (AP) SRS transmissions. This addresses problems in the prior art by providing associations between UE panel entities and SRS resources, providing spatial relationships for SP SRS transmissions, providing spatial relationships for AP SRS transmissions, and / or providing good communication performance.

[0043] In some embodiments, the processor 21 is configured to configure SRS resource configuration and / or SRS resource set configuration to the UE 10 and control the UE 10 to apply SRS transmissions, wherein the UE 10 is equipped with one or more panel entities, and the SRS transmissions include associations between the panel entities and SRS resources, spatial relationships for SP SRS transmissions, and / or spatial relationships for AP SRS transmissions. This can solve problems in the prior art, provide associations between UE panel entities and SRS resources, provide spatial relationships for SP SRS transmissions, provide spatial relationships for AP SRS transmissions, and / or provide good communication performance.

[0044] Figure 2 A wireless communication method 200 for sounding reference signal (SRS) transmission performed by a UE according to an embodiment of the present invention is illustrated. In some embodiments, method 200 includes: operation 202, configuring SRS resource configuration and / or SRS resource set configuration by a base station; and operation 204, applying SRS transmission by the UE, wherein the UE is equipped with one or more panel entities, and the SRS transmission includes association between the panel entities and SRS resources, spatial relationships for semi-persistent (SP) SRS transmission, and / or spatial relationships for aperiodic (AP) SRS transmission. This can solve problems in the prior art, provide association between UE panel entities and SRS resources, provide spatial relationships for SP SRS transmission, provide spatial relationships for AP SRS transmission, and / or provide good communication performance.

[0045] Figure 3A wireless communication method 300 for sounding reference signal (SRS) transmission performed by a base station according to an embodiment of the present invention is illustrated. In some embodiments, method 300 includes: operation 302, configuring SRS resource configuration and / or SRS resource set configuration to a UE, and operation 304, controlling the UE to apply SRS transmission, wherein the UE is equipped with one or more panel entities, and the SRS transmission includes association between the panel entities and SRS resources, spatial relationships for SP SRS transmission, and / or spatial relationships for AP SRS transmission. This can solve problems in the prior art, provide association between UE panel entities and SRS resources, provide spatial relationships for SP SRS transmission, provide spatial relationships for AP SRS transmission, and / or provide good communication performance.

[0046] Figure 4 An example of SRS transmission based on multiple TRP / panels based on an embodiment of the present invention is shown. Figure 4 As shown, in some embodiments, for a UE operating in NR with multi-TRP / panel transmission, SRS can be sent to different TRPs at different transmission times, giving the UE multiple opportunities to send SRS. Furthermore, multiple SRS can be sent simultaneously from multiple panels to multiple TRPs. For example, the first SRS and the second SRS can be sent from the first panel and the second panel to the first TRP and the second TRP, respectively. SRS transmissions targeted at different TRPs can avoid potential congestion between any TRP and the UE. Therefore, sending SRS to multiple TRPs not only enhances reliability but also improves coverage.

[0047] Figure 5 An example of SRS transmission based on a single TRP / panel, according to an embodiment of the present invention, is shown. Figure 5 As shown, in some embodiments, for a UE operating in NR with single TRP / panel transmission, SRS can be sent from the panel to the TRP. In this way, only one panel is activated, saving transmission power. Additionally, it simplifies detection in the gNB. For SP SRS transmission in Rel-15 / 16, it is activated or deactivated by the SP SRS activation / deactivation MAC CE. Regarding the SP SRS MAC CE activation time, when the UE transmits a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the MAC CE activation command, it can be sent from the slot... The spatial relationship of SP SRS transmission is applied starting from the first time slot thereafter, in which This represents the number of time slots per subframe, and u is the SCS configuration of the PUCCH. For Tables 1 and 2, since the frame duration is 10 ms and the number of time slots for the SP SRS MACCE activation time is at least... It can be inferred that the MACCE activation time is 3ms.

[0048] Table 1: Number of OFDM symbols per slot, per frame slot, and per subframe slot for normal cyclic prefix

[0049]

[0050] Table 2: Number of OFDM symbols per slot, per frame slot, and per subframe slot used for extending the cyclic prefix

[0051]

[0052] Regarding the application timing of DCI-based beam indication, it is agreed that the first time slot should be at least X ms or Y symbols after the last symbol of the acknowledgment of the joint or individual UL beam indication, where the beam application timing value (e.g., the X / Y value) can be configured by the gNB based on the UE's capabilities. In this way, the application timing ensures that both the gNB and the UE can switch beams after sending / receiving an acknowledgment.

[0053] In some embodiments, an association between UE panel entities and SRS resources is provided. Since multiple panels are implemented on the UE and one or more panel entities can be activated at a time, if one or more panel entities are used to transmit SRS, the alignment of the panel entities used to transmit SRS between the gNB and the UE can be determined. In some embodiments, several exemplary methods are proposed to define the association between UE panel entities and SRS resources.

[0054] In some embodiments, if a panel entity ID is included in an SRS resource configuration or an SRS resource set configuration, the association between a UE panel entity and an SRS resource or SRS resource set can be explicitly determined. Thus, when the UE is ready to transmit a given SRS resource, the UE selects the panel for that SRS transmission based on the panel entity ID included in the SRS resource configuration or SRS resource set configuration. Specifically, the SRS resource configuration includes a panel entity index (ID), and the UE selects the corresponding panel entity associated with the panel entity ID for SRS transmission based on the panel entity ID. Therefore, indicating the association between UE panel entities and SRS resources is straightforward.

[0055] In some scenarios, such as single TRP-based transmissions, only one SRS resource set is configured in the higher-layer parameters. Since multiple panels may exist on the UE, different SRS resources in the SRS resource set can be associated with different panels. In this case, the panel entity ID can be included in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource-r16) to indicate the association between the UE panel entity and the SRS resource. Specifically, the SRS resource configuration includes an SRS resource set, where the SRS resources are associated with the panel entity, and the panel entity ID is included in the SRS resource configuration to indicate the association between the panel entity and the SRS resource. It is recommended that if only one SRS resource set is configured, the panel entity ID can be included in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource-r16) to indicate the association between the UE panel entity and the SRS resource. When the UE is ready to transmit a given SRS resource, the UE obtains the panel entity ID from the SRS resource configuration. Using the panel entity ID, the UE can select the panel for the corresponding SRS transmission. In some embodiments, the SRS resource configuration includes an SRS resource set, where SRS resources in the SRS resource set are associated with panel entities, and the panel entity ID is included in the SRS resource configuration to indicate the association between the panel entity and the SRS resource.

[0056] In some embodiments, since multiple SRS resource sets may be configured in the higher-layer parameters, the association between UE panel entities and SRS resources can be designed for each SRS resource set. For multiple panels implemented on the UE, different SRS resource sets can be associated with different panels. In this case, the panel entity ID can be included in the SRS resource set configuration (e.g., the higher-layer parameter SRS-ResourceSet or SRS-PosResourceSet-r16) to indicate the association between UE panel entities and SRS resources. Specifically, the SRS resource set configuration includes a panel entity index (ID), and the UE selects the corresponding panel entity associated with the panel entity ID for SRS transmission based on the panel entity ID. It is proposed that if multiple SRS resource sets are configured, the panel entity ID can be included in the SRS resource set configuration (e.g., the higher-layer parameter SRS-ResourceSet or SRS-PosResourceSet-r16) to indicate the association between UE panel entities and SRS resources. When the UE is ready to transmit SRS resources in a given SRS resource set, the UE obtains the panel entity ID from the SRS resource set configuration. Using the panel entity ID, the UE can select the panel to transmit SRS resources from the corresponding SRS resource set. In some embodiments, the SRS resource set configuration includes an SRS resource set associated with a panel entity. The association between the panel entity and the SRS resources is determined based on the SRS resource set, and the panel entity ID is included in the SRS resource set configuration to indicate the association between the panel entity and the SRS resources in the SRS resource set.

[0057] In some embodiments, the association between a UE panel entity and an SRS resource can be fixed because multiple SRS resources or SRS resource sets are configured. Thus, when the UE is ready to transmit a given SRS resource, the panel used for that SRS transmission can be determined based on the predefined association between the UE panel entity and the SRS resource. Therefore, RRC overhead can be reduced without additional signaling for the panel entity ID. In some embodiments, the association between the panel entity and the SRS resource is predefined and / or fixed.

[0058] In some scenarios, such as single TRP-based transmissions, only one SRS resource set is configured in the higher-layer parameters. Since there are multiple SRS resources configured by the higher-layer parameters and multiple panels implemented on the UE, the mapping between the UE panel entity and the SRS resources identified by the higher-layer parameter srs-ResourceId or srs-PosResourceId-r16 can be fixed. Specifically, it is recommended that if only one SRS resource set is configured, the mapping between the UE panel entity and the SRS resources can be fixed, where the mapping relationship can be predefined and aligned between the gNB and the UE. Specifically, the first set of SRS resources is mapped to the first panel entity, the second set of SRS resources is mapped to the second panel entity, and so on. A set of SRS resources can include one or more SRS resources identified by the higher-layer parameter srs-ResourceId or srs-PosResourceId-r16. For example, SRS resources #0 and #1 are associated with panel entity #0, SRS resource #2 is associated with panel entity #1, and SRS resource #3 is associated with panel entity #2. When a UE is ready to transmit a given SRS resource, it selects a panel entity based on the mapping between UE panel entities and SRS resources. Using the selected panel entity, the UE can perform SRS transmission. In some embodiments, the SRS resource configuration includes a set of SRS resources associated with the panel entity, wherein the mapping between the panel entity and the SRS resource is fixed, and the mapping between the panel entity and the SRS resource is predefined and aligned between the base station and the UE.

[0059] In some embodiments, since there may be multiple SRS resource sets configured in higher-level parameters and multiple panels implemented on the UE, the mapping between the UE panel entity and the SRS resource set identified by the higher-level parameter srs-ResourceSetId or srs-PosResourceSetId-r16 can be fixed. It is proposed that if multiple SRS resource sets are configured, the mapping between the UE panel entity and the SRS resource sets can be fixed, wherein the mapping relationship can be predefined and aligned between the gNB and the UE. Specifically, a first set of SRS resource sets is mapped to a first panel entity, a second set of SRS resource sets is mapped to a second panel entity, and so on, wherein a set of SRS resource sets may include one or more SRS resource sets identified by the higher-level parameter srs-ResourceSetId or srs-PosResourceSetId-r16. For example, SRS resource set #0 is associated with panel entity #0, SRS resource set #1 is associated with panel entity #1, and SRS resource set #2 is associated with panel entity #2. When a UE is ready to transmit SRS resources for a given SRS resource set, the UE selects a panel entity based on the mapping between UE panel entities and SRS resource sets. Using the selected panel entity, the UE can perform SRS transmissions. In some embodiments, the SRS resource set configuration includes an SRS resource set associated with a panel entity. The association between the panel entity and the SRS resources is determined based on the SRS resource set, and the mapping between the panel entity and the SRS resource set is fixed, wherein the mapping between the panel entity and the SRS resource set is predefined and aligned between the base station and the UE.

[0060] In Rel-15 / 16, when the resource type (e.g., the higher-level parameter resourceType) in the SRS resource configuration (e.g., the higher-level parameter SRS-Resource or SRS-PosResource) is set to "semi-persistent," the spatial relationships are provided by a reference signal included in the SP-SRS activation / deactivation MAC CE. For the Rel-17 unified TCI framework, the TCI can be indicated by either the DCI or the MAC CE. Regarding the UL TCI state, the UL TCI provides the source reference for determining the UL channel of the UL TX spatial filter, where the UL TCI can be a joint TCI state and a separate UL TCI state. Therefore, the spatial relationships of the SP SRS can be designed based on the Rel-17 unified TCI framework. Furthermore, since the MAC CE activation time may not be equal to the application time of the DCI-based beam indication, the spatial relationships derived from the UL TCI can be applied to SP SRS under different conditions.

[0061] In some embodiments, the UE is configured to determine a first transmission timing, wherein the UE applies the spatial relationships of SPSRS transmissions derived from the uplink (UL) transmission configuration indication (TCI). In some embodiments, the UE determines the first transmission timing based on the greater of the downlink control information (DCI) application time, the medium access control (MAC) control element (CE) activation time, or the DCI application time and the MAC CE activation time.

[0062] In some embodiments, if the UE transmits SP SRS with spatial relations derived from the UL TCI starting from the first SP SRS transmission timing that satisfies the DCI application timing requirement (e.g., X ms or Y symbols), and regardless of the MAC CE activation time, it can simplify the process of applying the UL TCI to SP SRS transmission. It is proposed that when the resource type (e.g., the higher-layer parameter resourceType) in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource) is set to "semi-persistent," the first transmission timing for applying the spatial relations derived from the UL TCI used for SP SRS transmission is the first time slot at least X ms or Y symbols after the last symbol of the PDCCH acknowledgment carrying joint or individual UL beam indications, where the UL TCI is contained in the DCI, and the DCI in the PDCCH is used to schedule the PDSCH carrying the SP SRS activation MAC CE.

[0063] Figure 6 An example of applying UL TCI based solely on DCI application time, according to an embodiment of the present invention, is shown. Figure 6As shown, in some embodiments, if the first SP SRS transmission timing for applying spatial relationships from the UL TCI is determined solely based on DCI application timing requirements, and without considering the MAC CE activation time, the first SP SRS transmission timing is slot n+Tb, and the last transmission timing is slot n+Tc. If the UE starts sending SP SRS with spatial relationships from the UL TCI from the first SP SRS transmission timing that satisfies the MAC CE activation time (e.g., 3ms) and without considering DCI application timing requirements, the SP SRS activation command and the first transmission timing for applying spatial relationships from the UL TCI can be aligned. It is proposed that when the resource type (e.g., the higher-layer parameter resourceType) in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource) is set to "semi-persistent," the first transmission timing for applying spatial relationships derived from the UL TCI for SP SRS transmission is slot n+Tb. The first time slot thereafter, where the UL TCI is included in the DCI of the scheduled SP SRS activated MAC CE, and is the number of slots in each subframe, u is the SCS configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the MAC CE activation command.

[0064] Figure 7 An example of applying UL TCI based solely on MAC CE activation time, according to an embodiment of the present invention, is shown. Figure 7 As shown, in some embodiments, if the first SP SRS transmission timing of the application from the UL TCI is determined solely based on the MAC CE activation time requirement, and without considering the DCI application time, the first SP SRS transmission timing is time slot n+Tb, and the last transmission timing is time slot n+Tc.

[0065] In some embodiments, if the timing of the first SP SRS transmission of the spatial relationship applied from the UL TCI is determined based on the larger of the DCI application time and the MAC CE activation time, sufficient preparation time can be provided for the UE and gNB. It is recommended that when the resource type (e.g., the higher-layer parameter resourceType) in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource) is set to "semi-persistent," if the DCI application time (e.g., X ms or Y symbols) is not less than the MAC CE activation time (e.g., 3 ms), the first transmission timing of the spatial relationship derived from the UL TCI used for SP SRS transmission is in the first time slot at least X ms or Y symbols after the last symbol of the PDCCH acknowledgment carrying joint or individual UL beam indications, where the UL TCI is contained in the DCI, and the DCI in the PDCCH is used to schedule the PDSCH carrying the SP SRS activation MAC CE; and if the MAC CE activation time (e.g., 3 ms) is greater than the DCI application time (e.g., X ms or Y symbols), the first transmission timing of the spatial relationship derived from the UL TCI used for SP SRS transmission is in the first time slot. The first time slot thereafter, where the UL TCI is included in the DCI of the scheduled SP SRS activated MAC CE, and is the number of slots in each subframe, u is the SCS configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the MAC CE activation command.

[0066] Figure 8 An example of applying UL TCI based on a larger value of the DCI application time, according to an embodiment of the present invention, is shown. Figure 9 An example of applying a UL TCI based on a larger value of the MAC CE activation time, according to an embodiment of the present invention, is shown. See also Figure 8 and Figure 9 Note that in some embodiments, such as Figure 8 As shown, the DCI application time is longer than the MAC CE activation time, such as... Figure 9 As shown, the MAC CE activation time is longer than the DCI application time. The first SP SRS transmission timing for UL TCI application is time slot n+Tc, and the last transmission timing is time slot n+Td.

[0067] In some embodiments, the design applies the first transmission timing of the spatial relationship derived from the UL TCI, and determines the last transmission based on the SP SRS deactivation command. The activation time begins from the first transmission timing of the UE applying the spatial relationship derived from the UL TCI for SP SRS transmission and ends at the last transmission timing of the SP SRS transmission. In Rel-15 / 16, the spatial relationship of the active SP SRS resource remains the same during the activation time. In the Rel-17 Unified TCI framework, the UL TCI can be dynamically changed via DCI or MAC CE. Therefore, two approaches can be designed for the spatial relationship applicable to SP SRS during the activation time. In some embodiments, during the activation time, the UE transmits SP SRS with a single spatial relationship or a flexible spatial relationship derived from the UL TCI indicated in the DCI or MAC CE.

[0068] In some embodiments, if a single spatial relationship is used for an active SP SRS resource during the activation time, the design is consistent with existing principles. Since the UL TCI can be carried in either the DCI or the MAC CE, the spatial relationship of the SP SRS during the activation time can be derived from the UL TCI in the DCI or the MAC CE. This simplifies the design if the UL TCI originates from the DCI that schedules the PDSCH carrying the active MAC CE. On the other hand, if the UL TCI is derived from the latest DCI that satisfies the DCI application time, the spatial relationship derived from the UL TCI is up-to-date. It is proposed that when the resource type (e.g., the higher-level parameter resourceType) in the SRS resource configuration (e.g., the higher-level parameter SRS-Resource or SRS-PosResource) is set to "semi-persistent," the spatial relationship derived from the UL TCI used for SP SRS transmission should be applied from the first transmission timing to the last transmission timing, where the UL TCI is contained in the DCI and the DCI is used to schedule the PDSCH carrying the active MAC CE, or the UL TCI originates from the latest DCI that satisfies the DCI application time. More specifically, if the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SPCSI-RS, the UE should transmit the target SRS resource using the same spatial relationship as the reception of the source RS; while if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource using the same spatial relationship as the transmission of the source RS. For example... Figure 6 As shown, during the SP SRS activation time between the first and last transmission opportunities, the UE transmits an SP SRS with a spatial relationship derived from the source RS of the UL TCI in the DCI. This spatial relationship is used to schedule the PDSCH carrying the SP SRS activation MAC CE.

[0069] Figure 10 An example of applying spatial relationships based on the latest DCI according to an embodiment of the present invention is shown. Figure 10 As shown, in some embodiments, during the active time of the SP SRS between the first and last transmission opportunities, the UE transmits an SP SRS (e.g., the DCI in slot n+Tb-K1) with a spatial relationship derived from the source RS of the UL TCI in the latest DCI. For Figure 4 In the case of SRS transmission based on multiple TRPs / panels, since each link between the UE panel and the TRP corresponds to a separate channel, the spatial relationships of SP SRS transmitted from different panels can be different. Therefore, for SRS transmission based on multiple TRPs / panels, it is proposed to derive the spatial relationships of SP SRS transmitted from the first panel and the spatial relationships of SP SRS transmitted from the first panel from the source RS of the UL TCI corresponding to the first panel (e.g., the first UL TCI) in the DCI. The second panel is derived from the source RS of the UL TCI corresponding to the second panel (e.g., the second UL TCI) in the DCI, where the DCI is used to schedule the PDSCH carrying the SP SRS activation MAC CE, or the DCI is the latest DCI that satisfies the DCI application time; furthermore, from the first transmission opportunity to the last transmission opportunity, the spatial relationships of SP SRS transmitted from the first panel and the spatial relationships of SP SRS transmitted from the second panel should be applied.

[0070] More specifically, if the source RS in the UL TCI corresponding to the first panel in the DCI (e.g., the first UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the first panel (e.g., the first UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for transmitting the source RS. Furthermore, if the source RS in the UL TCI corresponding to the second panel in the DCI (e.g., the second UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the second panel (e.g., the second UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for transmitting the source RS.

[0071] In some embodiments, if the UL TCI is carried in the MAC CE, the UE uses the spatial relationships derived from the UL TCI in the MAC CE to transmit SP SRS. It is proposed that when the resource type (e.g., the higher-layer parameter resourceType) in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource) is set to "semi-persistent," the spatial relationships derived from the UL TCI used for SP SRS transmission should be applied from the first transmission opportunity to the last transmission opportunity, where the UL TCI is carried in the MAC CE that satisfies the MAC CE activation time. More specifically, if the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource with the same spatial relationships as the reception of the source RS; while if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource with the same spatial relationships as the transmission of the source RS.

[0072] Figure 11 An example of applying spatial relationships based on MAC CE according to an embodiment of the present invention is shown. Figure 11 It is shown that, in some embodiments, during the SP SRS activation time between the first and last transmission timings, the UE transmits an SP SRS with spatial relationships derived from the source RS of the UL TCI in the MAC CE. For Figure 1 The example shown is an SRS transmission based on multiple TRPs / panels, such as... Figure 4 As shown, the spatial relationships of SP SRS transmitted from different panels can be different. Therefore, for SRS transmission based on multiple TRPs / panels, it is proposed that the spatial relationship of SP SRS transmitted from the first panel is derived from the source RS of the UL TCI corresponding to the first panel (e.g., the first UL TCI) in the MACCE, and the spatial relationship of SP SRS transmitted from the second panel is derived from the source RS of the UL TCI corresponding to the second panel (e.g., the second UL TCI) in the MACCE; furthermore, the spatial relationships of SP SRS transmitted from the first panel and the spatial relationships of SP SRS transmitted from the second panel should be applied from the first transmission timing to the last transmission timing.

[0073] More specifically, if the source RS in the UL TCI corresponding to the first panel in the MAC CE (e.g., the first UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the first panel (e.g., the first UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for transmitting the source RS. Furthermore, if the source RS in the UL TCI corresponding to the second panel in the MAC CE (e.g., the second UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the second panel (e.g., the second UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for transmitting the source RS.

[0074] For the Rel-17 Unified TCI framework, since the TCI is indicated by the DCI or MAC CE, the spatial relationship of SP SRS transmissions can be dynamically changed and can adapt to the channel. Therefore, during activation, the UE can utilize a flexible spatial relationship derived from the UL TCI to transmit SP SRS. In some embodiments, it is proposed that when the resource type (e.g., the higher-layer parameter resourceType) in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource) is set to "semi-persistent," for each SP SRS transmission within the activation time from the first transmission opportunity to the last transmission opportunity, the spatial relationship derived from the latest UL TCI of that SP SRS transmission should be applied, where the UL TCI is contained in the latest DCI satisfying the DCI application time or the latest MAC CE satisfying the MAC CE activation time. Specifically, for the SP SRS transmission of the first transmission opportunity, the spatial relationship applicable to that SP SRS transmission can be derived from the ULTCI carried in the DCI of the PDSCH that schedules the activation MAC CE. More specifically, if the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource with the same spatial relationship as the reception of the source RS; while if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource with the same spatial relationship as the transmission of the source RS.

[0075] Figure 12An example of applying spatial relationships based on the latest DCI according to an embodiment of the present invention is shown. Figure 12 As shown, in some embodiments, during the activation time of the SP SRS between the first transmission opportunity and the last transmission opportunity, the UE transmits an SP SRS having a spatial relationship derived from the source RS of the UL TCI in the latest DCI. Figure 13 An example of an application based on the spatial relationships of the latest MAC CE, according to an embodiment of the present invention, is shown. Figure 13 Note that, in some embodiments, during the SP SRS activation time between the first transmission opportunity and the last transmission opportunity, the UE transmits an SP SRS having a spatial relationship derived from the source RS of the UL TCI in the latest MACCE.

[0076] In some embodiments, for Figure 4 In the case of SRS transmission based on multiple TRPs / panels, the spatial relationships of SP SRS transmitted from different panels can be different. Therefore, for SRS transmission based on multiple TRPs / panels, it is proposed that for each SP SRS transmission from the first panel during the active time from the first transmission opportunity to the last transmission opportunity, a spatial relationship derived from the source RS of the UL TCI corresponding to the first panel (e.g., the first UL TCI) should be applied, where the UL TCI is included in the latest DCI satisfying the DCI application time or the latest MAC CE satisfying the MAC CE activation time; furthermore, for each SP SRS transmission from the second panel during the active time from the first transmission opportunity to the last transmission opportunity, a spatial relationship derived from the source RS of the UL TCI corresponding to the second panel (e.g., the second UL TCI) should be applied, where the UL TCI is included in the latest DCI satisfying the DCI application time or the latest MAC CE satisfying the MAC CE activation time.

[0077] More specifically, if the source RS in the UL TCI corresponding to the first panel in the DCI or MAC CE (e.g., the first UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the first panel (e.g., the first UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for transmitting the source RS. Furthermore, if the source RS in the ULTCI corresponding to the second panel in the DCI or MAC CE (e.g., the second UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the second panel (e.g., the second ULTCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for transmitting the source RS.

[0078] In some embodiments, regarding the design of the SP SRS activation / deactivation MAC CE, since the spatial relationship of the SP SRS transmission can be indicated by DCI or MAC CE, it does not need to carry resources for deriving the spatial relationship of the SP SRS, and it carries an index of the SP SRS resource set to be activated or deactivated. For Figure 4 In the case of SRS transmission based on multiple TRP / panels shown, the MAC CE can carry a second SP SRS resource set index to indicate the second SP SRS sent from the second panel.

[0079] In some embodiments, the detailed design on the MAC CE includes the following fields: 1. SRS Resource Set Cell ID: This field indicates the identifier of the serving cell, which contains the active / deactivated SP SRS resource set. This field is 5 bits long. 2. SRS Resource Set BWP ID: This field indicates the BWP of the code point as a DCI bandwidth portion indicator field, which contains the active / deactivated SP SRS resource set. This field is 2 bits long. 3. SUL: This field indicates whether the MAC CE is suitable for NUL carrier or SUL carrier configuration. Setting this field to 1 indicates that it is suitable for SUL carrier configuration, and setting it to 0 indicates that it is suitable for NUL carrier configuration. 4. SP SRS Resource Set ID0: This field indicates the first SP SRS resource set ID identified by SRS-ResourceSetId, which will be activated or deactivated. For SRS transmission based on multiple TRP / panel, this field indicates whether the SP SRS transmitted from the first panel is active or deactivated. This field is 4 bits long. 5. SP SRS Resource Set ID1: For SRS transmissions based on multiple TRPs / panels, this field indicates the second SP SRS resource set ID identified by SRS-ResourceSetId, indicating whether the SP SRS sent from the second panel is activated or deactivated. This field is 4 bits long. 6. A / D: This field indicates whether the corresponding SP SRS resource set is activated or deactivated. Setting this field to 1 indicates activation, otherwise deactivation. 7. R: Reserved bit, set to 0.

[0080] Figure 14 An example of SP SRS activation / deactivation of MAC CE based on an embodiment of the present invention is shown. Figure 14 As shown, in some embodiments, a fixed-size MAC CE can provide a universal design for all scenarios if both fields of the SP SRS resource set ID are always present. Figure 15 An example of SP SRS activation / deactivation of MACCE based on an embodiment of the present invention is shown. Figure 15 As shown, in some embodiments, a variable-size MAC CE can reduce the MAC CE payload if the second field of the SP SRS Resource Set ID exists only for SRS transmissions based on multiple TRPs / panels. In other words, for SRS transmissions based on a single panel, only the first field of the SP SRS Resource Set ID exists. To achieve this, it has an additional field: C: This field indicates whether the SP SRS Resource Set ID1 field exists. If this field is set to 1, the SP SRS Resource Set ID1 field exists; otherwise, it does not.

[0081] In some embodiments, the spatial relationships applied by the UE for AP SRS transmission include AP SRS transmission in multi-TRP / panel-based SRS transmission triggered by the UE by adding fields or enhancing relevant higher-layer parameters.

[0082] In Rel-15 / 16, for SRS transmissions based on a single TRP / panel, AP SRS is triggered by the SRS request field in DCI format 0_1 / 0_2 / 1_1 / 1_2 / 2_3. For SRS transmissions based on multiple TRPs / panels, this mechanism should be designed to trigger AP SRS transmissions from multiple panels. In some embodiments, two methods are proposed to trigger AP SRS transmissions in multi-TRP / panel scenarios.

[0083] In some embodiments, for SRS transmission based on multiple TRPs / panels, if a second SRS request field is added to trigger AP SRS transmission from the second panel, AP SRS transmission from both panels can be flexibly triggered. It is recommended that for SRS transmission based on multiple TRPs / panels, a second SRS request field with 2 bits (e.g., DCI format 0_1 / 0_2 / 1_1 / 1_2 / 2_3) be added to the DCI to trigger AP SRS transmission from the second panel. Specifically, the first SRS request field is used to trigger AP SRS transmission from the first panel, while the second SRS request field is used to trigger AP SRS transmission from the second panel. Regarding the design of the second SRS request field, the mapping between the second SRS request field and the triggered AP SRS resource set sent from the second panel can be as shown in Table 3.

[0084] Table 3: Second SRS Request Fields

[0085]

[0086] In some embodiments, for multi-TRP / panel-based SRS transmissions, using the existing SRS request field and enhancing the higher-layer parameters of AP SRS triggering to support AP SRS triggering from multiple panels reduces DCI overhead and can be easily scaled to different numbers of panels. It is recommended that for multi-TRP / panel-based SRS transmissions, multiple SRS resource sets (e.g., the higher-layer parameter srs-ResourceSetToAddModList) be configured in the SRS resource set list, each SRS resource set corresponding to a value of the SRS request field. Each SRS resource set in the group corresponds to an AP SRS transmitted by the UE panel, and the number of SRS resource sets in a group is equal to the number of panels used for AP SRS transmissions, and the number of groups is equal to the number of valid states indicated by the SRS request field (e.g., 3). For example, if the number of valid states is 3 and the number of panels transmitting AP SRS is 2, the mapping between the SRS request field of each panel and the triggered AP SRS resource set can be shown in Table 4. For example, if the value of the SRS request field is "10", it is used for SRS resource set #2 for AP SRS sent from the first panel, and triggers SRS resource set #3 for AP SRS sent from the second panel.

[0087] Table 4: Example of mapping between SRS request fields and triggered AP SRS resource sets

[0088]

[0089] In Rel-15 / 16, the spatial relationships of AP SRS resources can be updated via the enhanced SP / AP SRS spatial relationship instruction MAC CE. In the Rel-17 unified TCI framework, the UL TCI can be dynamically changed via DCI or MAC CE. Therefore, to apply relationships from the UL TCI, two methods can be designed to update the spatial relationships applicable to AP SRS. In some embodiments, the application of spatial relationships for AP SRS transmission by the UE includes updating the spatial relationships for AP SRS transmission by the UE based on a MAC CE update command or without a MAC CE update command.

[0090] In some embodiments, if the spatial relationship derived from the UL TCI can be applied to the AP SRS transmission after the MAC CE activation time (e.g., 3ms), this is consistent with existing principles. To derive the latest spatial relationship, the UL TCI can be included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time. It is proposed that when the resource type (e.g., the higher-level parameter resourceType) in the SRS resource configuration (e.g., the higher-level parameter SRS-Resource or SRS-PosResource) is set to "non-periodic," it should be derived from the time slot. The first time slot thereafter applies the spatial relationship derived from the UL TCI used for AP SRS transmission, where the UL TCI is contained in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time, and is the number of time slots in each subframe, u is the SCS configuration common control channel (PUCCH) of that subframe, and the PUCCH with HARQ-ACK information transmitted by the UE in time slot n corresponding to the PDSCH carrying the MAC CE update command. Specifically, the UL TCI can be carried in the DCI that triggers AP SRS. More specifically, if the source RS in the UL TCI is an SS / PBCH block or a periodic CSI-RS or SP CSI-RS, the UE should transmit the target SRS resource with the same spatial relationship as the reception of the source RS; while if the source RS in the UL TCI is a periodic SRS or SP SRS, the UE should transmit the target SRS resource with the same spatial relationship as the transmission of the source RS.

[0091] Figure 16 An example of applying spatial relationships after MAC CE activation time is shown based on an embodiment of the present invention. Figure 16 As shown, in some embodiments, after the MAC CE activation time, the UE transmits an AP SRS in time slot n+Tb with spatial relationships derived from the source RS of the latest DCI or the latest UL TCI satisfying the MAC CE activation time. This is in the case of SRS transmission based on multiple TRPs / panels, such as... Figure 4 As shown, the spatial relationships of SP SRS transmitted from different panels can differ. Therefore, for SRS transmission based on multiple TRPs / panels, it is recommended that AP SRS transmissions from the first panel should be sent from the time slot. The spatial relationship derived from the source RS of the UL TCI corresponding to the first panel (e.g., the first UL TCI) shall be applied starting from the first time slot thereafter, where the UL TCI is contained in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time; furthermore, for AP SRS transmissions from the second panel, the spatial relationship derived from the source RS of the UL TCI corresponding to the second panel (e.g., the second UL TCI) shall be applied starting from the first time slot after time slot n+. The UL TCI is included in the latest DCI that meets the DCI application time or the latest MAC CE that meets the MAC CE activation time, and is the slot number for each subframe, u is the SCS configuration PUCCH for that subframe, and the PUCCH with HARQ-ACK information transmitted by the UE in slot n corresponding to the PDSCH carrying the MAC CE update command. Specifically, the UL TCI can be carried in the DCI that triggers the AP SRS.

[0092] More specifically, if the source RS in the UL TCI corresponding to the first panel in the DCI or MAC CE (e.g., the first UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the first panel (e.g., the first UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for transmitting the source RS. Furthermore, if the source RS in the UL TCI corresponding to the second panel in the DCI or MAC CE (e.g., the second UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the second panel (e.g., the second UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for transmitting the source RS. Regarding the design of the MAC CE indicating the spatial relationship of the AP SRS, the MAC CE design in the above embodiments can be reused. In other words, the MAC CE designed in the above embodiments can be used to indicate the activation or deactivation of the SP SRS and the spatial relationship update of the AP SRS. In addition, if the MAC CE is used to indicate the spatial relationship update of the AP SRS, the MAC entity should ignore the A / D field.

[0093] In some embodiments, if the spatial relationship derived from the UL TCI is applied to an AP SRS transmission without a MAC CE update command, this is a straightforward approach that simplifies the AP SRS spatial relationship update process. To derive the latest spatial relationship, the UL TCI can be included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time. It is proposed that when the resource type (e.g., the higher-layer parameter resourceType) in the SRS resource configuration (e.g., the higher-layer parameter SRS-Resource or SRS-PosResource) is set to "non-periodic," after the UE receives the DCI that triggers the AP SRS, the spatial relationship derived from the UL TCI used for the AP SRS transmission should be applied, where the UL TCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time. Specifically, the UL TCI can be carried in the DCI that triggers the AP SRS. More specifically, if the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SPCSI-RS, the UE should transmit the target SRS resource with the same spatial relationship as the reception of the source RS; while if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource with the same spatial relationship as the transmission of the source RS.

[0094] Figure 17 An example of applying spatial relationships without a MAC CE update command is shown based on an embodiment of the present invention. Figure 17 As shown, in some embodiments, the UE can transmit AP SRS in time slot n+Tb, having spatial relationships derived from the source RS of the UL TCI in the latest DCI satisfying the DCI application time or the source RS of the UL TCI in the latest MAC CE satisfying the MAC CE activation time. This is illustrated in the case of SRS transmission based on multiple TRPs / panels, such as... Figure 4As shown, the spatial relationships of SP SRS transmitted from different panels can be different. Therefore, for SRS transmissions based on multiple TRPs / panels, it is recommended that for AP SRS transmissions from the first panel, after the UE receives the DCI that triggers the AP SRS, the spatial relationship derived from the source RS of the UL TCI corresponding to the first panel (e.g., the first UL TCI) should be applied, where the UL TCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time. Furthermore, for AP SRS transmissions from the second panel, after the UE receives the DCI that triggers the AP SRS, the spatial relationship derived from the source RS of the UL TCI corresponding to the second panel (e.g., the second ULTCI) should be applied, where the UL TCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time. Specifically, the UL TCI can be carried in the DCI that triggers the AP SRS.

[0095] More specifically, if the source RS in the UL TCI corresponding to the first panel in the DCI or MAC CE (e.g., the first UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the first panel (e.g., the first UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the first panel, with the spatial relationship being the same as that used for transmitting the source RS. Furthermore, if the source RS in the UL TCI corresponding to the second panel in the DCI or MAC CE (e.g., the second UL TCI) is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for receiving the source RS. If the source RS in the UL TCI corresponding to the second panel (e.g., the second UL TCI) is a periodic SRS or an SP SRS, the UE should transmit the target SRS resource from the second panel, with the spatial relationship being the same as that used for transmitting the source RS.

[0096] In summary, the main idea of ​​some embodiments of the present invention is to provide a novel design for SRS transmission, allowing the transmitter to apply SRS transmission. Several exemplary solutions for applying SRS transmission are proposed in some embodiments of the present invention, including the association between UE panel entities and SRS resources, the design of SP SRS transmission, and AP SRS transmission. First, regarding the association method, explicit methods and / or fixed association methods with one or more SRS resource sets are designed. Second, regarding SP SRS transmission, the determination of the first transmission timing for applying UL TCI, the spatial relationships applied to SP SRS, and the SP SRS activation / deactivation MAC CE are designed. Third, for AP SRS transmission, an AP SRS triggering mechanism and the spatial relationships applied to AP SRS are designed. Considering these exemplary methods, support for SRS transmission is greatly enhanced.

[0097] The following table includes some abbreviations that may be used in some embodiments of the present invention:

[0098]

[0099]

[0100] Some embodiments of the invention offer the following commercial benefits: 1. Solving problems in the prior art. 2. Providing association between UE panel entities and SRS resources. 3. Providing spatial relationships for SP SRS transmission. 4. Providing spatial relationships for AP SRS transmission. 5. Providing good communication performance. 6. Some embodiments of the invention are applicable to 5G-NR chipset suppliers, V2X communication system development suppliers, automobile manufacturers (including cars, trains, trucks, buses, bicycles, motorcycles, helmets, etc.), drone manufacturers, smartphone manufacturers, public safety communication equipment manufacturers, and AR / VR device manufacturers (e.g., for gaming, conference / seminar, educational purposes). Some embodiments of the invention are combinations of "technologies / processes" that can be adopted in 3GPP specifications to create the final product. Some embodiments of the invention propose technical mechanisms.

[0101] Figure 18 This is a block diagram of a system 700 for wireless communication according to an embodiment of the present invention. The embodiments described herein can be implemented in the system using any suitably configured hardware and / or program. Figure 18An example system 700 for one embodiment is shown, comprising radio frequency (RF) circuitry 710, baseband circuitry 720, application circuitry 730, memory / storage device 740, display 750, camera 760, sensor 770, and input / output (I / O) interface 780, all of which are coupled to each other at least as shown. The application circuitry 730 may include, for example, but not limited to, circuitry of one or more single-core or multi-core processors. The processor may include any combination of a general-purpose processor and a dedicated processor such as a graphics processor, application processor, etc. The processor may be coupled to the memory / storage device and configured to execute instructions stored in the memory / storage device to enable various applications and / or operating systems to run on the system.

[0102] Although the invention has been described in conjunction with embodiments considered to be the most practical and preferred embodiments, it should be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various arrangements made without departing from the broadest interpretation of the appended claims.

Claims

1. A wireless communication method for detecting the transmission of a Reference Signal (SRS) executed by a User Equipment (UE), characterized in that, include: SRS resource configuration and / or SRS resource set configuration are configured by the base station; The UE is equipped with one or more panel entities, and the UE applies the association between the panel entities and SRS resources, the spatial relationship of semi-persistent SP SRS transmission, and the spatial relationship of aperiodic AP SRS transmission to perform SRS transmission; The spatial relationship of the UE applying the AP SRS transmission includes the UE triggering the AP SRS transmission in the multi-TRP / panel-based SRS transmission by adding a field; The UE triggers the AP SRS transmission in the multi-TRP / panel-based SRS transmission by adding an SRS request field. The first SRS request field is used to trigger the AP SRS transmission from the first panel entity. A second SRS request field is added to trigger the AP SRS transmission from the second panel entity. A table is used to map the second SRS request field and the triggered AP SRS resource set sent from the second panel entity.

2. The wireless communication method according to claim 1, characterized in that, The SRS resource configuration and / or the SRS resource set configuration includes a panel entity index ID, and the UE selects the corresponding panel entity associated with the panel entity ID for SRS transmission based on the panel entity ID.

3. The wireless communication method according to claim 2, characterized in that, The SRS resource configuration includes an SRS resource set, wherein the SRS resources in the SRS resource set are associated with the panel entity, and the panel entity ID is included in the SRS resource configuration to indicate the association between the panel entity and the SRS resource.

4. The wireless communication method according to claim 2, characterized in that, The SRS resource set configuration includes SRS resource sets associated with the panel entity. The association between the panel entity and the SRS resource is determined based on each SRS resource set, and the panel entity ID is included in the SRS resource set configuration to indicate the association between the panel entity and the SRS resource in the SRS resource set.

5. The wireless communication method according to claim 1, characterized in that, The association between the panel entity and the SRS resource is predefined and / or fixed.

6. The wireless communication method according to claim 5, characterized in that, The SRS resource configuration includes an SRS resource set, the SRS resources in the SRS resource set are associated with the panel entity, the mapping between the panel entity and the SRS resources is fixed, wherein the mapping between the panel entity and the SRS resources is predefined and aligned between the base station and the UE, and a first group of SRS resources is mapped to a first panel entity, and a second group of SRS resources is mapped to a second panel entity.

7. The wireless communication method according to claim 5, characterized in that, The SRS resource set configuration includes multiple SRS resource sets, each associated with a panel entity. The association between the panel entity and the SRS resource set is determined based on the SRS resource set. The mapping between the panel entity and the SRS resource set is fixed, wherein the mapping between the panel entity and the SRS resource set is predefined and aligned between the base station and the UE. A first set of SRS resource sets is mapped to a first panel entity, and a second set of SRS resource sets is mapped to a second panel entity.

8. The wireless communication method according to claim 1, characterized in that, The UE determines the first transmission timing, wherein the UE applies the spatial relationship of the SP SRS transmission derived from the uplink UL transmission configuration instruction TCI.

9. The wireless communication method according to claim 8, characterized in that, The UE determines the first transmission opportunity based on the larger of the downlink control information (DCI) application time, the media access control (MAC) control unit (CE) activation time, or the DCI application time and the MAC CE activation time.

10. The wireless communication method according to claim 9, characterized in that, If the resource type in the SRS resource configuration is set to SP, and if the UE determines the first transmission timing solely based on the DCI application time, the first transmission timing for applying the spatial relationship of the SP SRS transmission derived from the UL TCI is a first time slot at least X ms or Y symbols after the last symbol of the acknowledgment of the Physical Downlink Control Channel (PDCCH) carrying a joint or individual UL beam indication, wherein the UL TCI is contained in the DCI, and the DCI in the PDCCH is used to schedule the Physical Downlink Shared Channel (PDSCH) carrying the SP SRS Activation MAC CE.

11. The wireless communication method according to claim 9, characterized in that, If the resource type in the SRS resource configuration is set to SP, and if the UE determines the first transmission timing solely based on the MAC CE activation time, the first transmission timing applying the spatial relationship of the SP SRS transmission derived from the UL TCI is... The first time slot thereafter, wherein the UL TCI is included in the DCI of the scheduled SP SRS activated MAC CE, and It is the number of time slots in each subframe. It is the subcarrier spacing (SCS) configuration of the PUCCH, and the UE transmits a PUCCH with hybrid automatic repeat request-acknowledgment (HARQ-ACK) information in slot n corresponding to the PDSCH carrying the MAC CE activation command.

12. The wireless communication method according to claim 9, characterized in that, If the resource type in the SRS resource configuration is set to SP, and if the UE determines the first transmission timing based on the larger of the DCI application time and the MAC CE activation time, and the DCI application time is not less than the MAC CE activation time, the first transmission timing for applying the spatial relationship of the SP SRS transmission derived from the ULTCI is in the first time slot at least Xms or Y symbols after the last symbol of the acknowledgment of the PDCCH carrying a joint or individual UL beam indication, wherein the ULTCI is included in the DCI, and the DCI in the PDCCH is used to schedule the PDSCH carrying the SP SRS activation MAC CE; and if the MAC CE activation time is greater than the DCI application ... carrying a joint or individual UL beam indication, The first time slot thereafter, wherein the UL TCI is included in the DCI of the scheduled SP SRS activated MAC CE, and It is the number of time slots in each subframe. It is the subcarrier spacing (SCS) configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in the time slot n corresponding to the PDSCH carrying the MAC CE activation command.

13. The wireless communication method according to claim 8, characterized in that, During the activation period, the UE transmits SP SRS using a single spatial relationship or a flexible spatial relationship derived from the UL TCI indicated in the DCI or MAC CE.

14. The wireless communication method according to claim 13, characterized in that, A single spatial relationship is used for active SP SRS transmissions during the activation time, and the single spatial relationship is based on the UL TCI indicated in the DCI or the UL TCI indicated in the MAC CE.

15. The wireless communication method according to claim 14, characterized in that, If the resource type in the SRS resource configuration is set to SP, the spatial relationship derived from the UL TCI used for SP SRS transmission applies from the first transmission timing to the last transmission timing, wherein the UL TCI is included in the DCI used to schedule the PDSCH carrying the active MAC CE, or the UL TCI originates from the latest DCI that satisfies the DCI application time.

16. The wireless communication method according to claim 15, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

17. The wireless communication method according to claim 14, characterized in that, For SRS transmission based on multiple TRPs / panels, the spatial relationship of the SP SRS sent from the first panel entity is derived from the source RS of the UL TCI corresponding to the first panel entity in the DCI, and the spatial relationship of the SP SRS sent from the second panel entity is derived from the source RS of the UL TCI corresponding to the second panel entity in the DCI, wherein the DCI is used to schedule the PDSCH carrying the SP SRS activation MAC CE, or the DCI is the latest DCI that satisfies the DCI application time; The spatial relationship between the SP SRS transmitted from the first panel entity and the SP SRS transmitted from the second panel entity is applied from the first transmission timing to the last transmission timing.

18. The wireless communication method according to claim 17, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as receiving the source RS; and if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as the transmission of the source RS.

19. The wireless communication method according to claim 18, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI is the SS / PBCH block, the periodic CSI-RS, or the SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; and if the source RS in the UL TCI corresponding to the second panel entity is the periodic SRS or the SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

20. The wireless communication method according to claim 14, characterized in that, If the resource type in the SRS resource configuration is set to SP, and if the UL TCI is carried in the MAC CE, the UE uses the spatial relationship derived from the UL TCI in the MAC CE to transmit the SP SRS. The spatial relationship derived from the UL TCI for SP SRS transmission applies from the first transmission timing to the last transmission timing, wherein the UL TCI is contained in the MAC CE that satisfies the MAC CE activation time.

21. The wireless communication method according to claim 20, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

22. The wireless communication method according to claim 20, characterized in that, For SRS transmission based on multiple TRPs / panels, the spatial relationship of the SP SRS transmitted from the first panel entity is derived from the source RS of the UL TCI corresponding to the first panel entity in the MAC CE, and the spatial relationship of the SP SRS transmitted from the second panel entity is derived from the source RS of the UL TCI corresponding to the second panel entity in the MAC CE. The spatial relationship between the SP SRS transmitted from the first panel entity and the SP SRS transmitted from the second panel entity is applied from the first transmission timing to the last transmission timing.

23. The wireless communication method according to claim 22, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as receiving the source RS; and if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as the transmission of the source RS.

24. The wireless communication method according to claim 23, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the MAC CE is the SS / PBCH block, the periodic CSI-RS, or the SPCSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the second panel entity is the periodic SRS or the SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

25. The wireless communication method according to claim 13, characterized in that, In the flexible spatial relationship, if the resource type in the SRS resource configuration is set to SP, for each SP SRS transmission within the activation time from the first transmission timing to the last transmission timing, the spatial relationship derived from the latest UL TCI for the SP SRS transmission is applied, wherein the UL TCI is contained in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time.

26. The wireless communication method according to claim 25, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

27. The wireless communication method according to claim 25, characterized in that, For SRS transmissions based on multiple TRPs / panels, for each SP SRS transmission from a first panel entity during the active time from the first transmission timing to the last transmission timing, the spatial relationship derived from the source RS of the UL TCI corresponding to the first panel entity is applied, wherein the UL TCI is included in the latest DCI satisfying the DCI application time or the latest MAC CE satisfying the MAC CE activation time; and for each SP SRS transmission from a second panel entity during the active time from the first transmission timing to the last transmission timing, the spatial relationship derived from the source RS of the ULTCI corresponding to the second panel entity is applied, wherein the UL TCI is included in the latest DCI satisfying the DCI application time or the latest MAC CE satisfying the MAC CE activation time.

28. The wireless communication method according to claim 27, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI or MAC CE is an SS / PBCH block, periodic CSI-RS, or SP CSI-RS, the UE transmits the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or SPSRS, the UE transmits the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

29. The wireless communication method according to claim 28, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI or MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the second panel entity is the periodic SRS or the SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

30. The wireless communication method according to claim 1, characterized in that, The SP SRS activation / deactivation MAC CE carries an index of the SP SRS resource set to be activated or deactivated. The SP SRS activation / deactivation MAC CE includes the following fields: cell ID of the SRS resource set, bandwidth portion BWP ID of the SRS resource set, supplementary uplink SUL, SP SRS resource set ID0, SP SRS resource set ID1, A / D, and R.

31. The wireless communication method according to claim 30, characterized in that, The SP SRS activation / deactivation MACCE includes a fixed size or a variable size. If the SP SRS activation / deactivation MACCE includes a variable size, then the SP SRS activation / deactivation MACCE also includes a C field.

32. The wireless communication method according to claim 1, characterized in that, For SRS transmission based on multiple TRPs / panels, multiple SRS resource sets are configured in the SRS resource set list. Each SRS resource set corresponds to the value of an SRS request field. Each SRS resource set in the group corresponds to an AP SRS sent from a panel entity. The number of SRS resource sets in the group is equal to the number of panel entities used for AP SRS transmission, and the number of groups is equal to the number of valid states indicated by the SRS request field.

33. The wireless communication method according to claim 1, characterized in that, The spatial relationships used by the UE for AP SRS transmission include the spatial relationships being updated by the UE based on or not based on the MAC CE update command.

34. The wireless communication method according to claim 33, characterized in that, If the resource type in the SRS resource configuration is set to aperiodic, and if the UE determines the spatial relationship of the AP SRS transmission based on the MAC CE update command, the spatial relationship derived from the UL TCI used for the AP SRS transmission is obtained from the time slot. The first time slot thereafter is used, wherein the UL TCI is included in the latest DCI that meets the DCI application time or the latest MAC CE that meets the MACCE activation time, and It is the number of time slots in each subframe. It is the SCS configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in the time slot n corresponding to the PDSCH carrying the MAC CE update command.

35. The wireless communication method according to claim 34, characterized in that, The UL TCI is carried in the DCI that triggers the APSRS.

36. The wireless communication method according to claim 34, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

37. The wireless communication method according to claim 34, characterized in that, For SRS transmissions based on multiple TRPs / panels, for the AP SRS transmissions from the first panel entity, the spatial relationships derived from the source RS of the UL TCI corresponding to the first panel entity are based on the time slots. The application begins in the first time slot thereafter, wherein the ULTCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time; for the AP SRS transmission from the second panel entity, the spatial relationship derived from the source RS of the ULTCI corresponding to the second panel entity is from the time slot. The application begins in the first time slot thereafter, wherein the UL TCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time, and It is the number of time slots in each subframe. It is the SCS configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in the time slot n corresponding to the PDSCH carrying the MAC CE update command.

38. The wireless communication method according to claim 37, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI or the MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for sending the source RS.

39. The wireless communication method according to claim 38, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI or the MAC CE is the SS / PBCH block, the periodic CSI-RS, or the SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; and if the source RS in the UL TCI corresponding to the second panel entity is a periodic SRS or SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

40. The wireless communication method according to claim 33, characterized in that, If the resource type in the SRS resource configuration is set to aperiodic, and if the UE determines the spatial relationship of AP SRS transmission without a MAC CE update command, after the UE receives the DCI that triggers AP SRS, it applies the spatial relationship derived from the UL TCI used for AP SRS transmission, wherein the UL TCI is contained in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time.

41. The wireless communication method according to claim 40, characterized in that, The UL TCI is carried in the DCI that triggers the APSRS.

42. The wireless communication method according to claim 40, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

43. The wireless communication method according to claim 40, characterized in that, For SRS transmissions based on multiple TRPs / panels, for the AP SRS transmission from a first panel entity, after the UE receives the DCI-triggered AP SRS, the spatial relationship derived from the source RS of the UL TCI corresponding to the first panel entity is applied, wherein the UL TCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time; and for the AP SRS transmission from a second panel entity, after the UE receives the DCI-triggered AP SRS, the spatial relationship derived from the source RS of the UL TCI corresponding to the second panel entity is applied, wherein the UL TCI is included in the latest DCI that satisfies the DCI corresponding time or the latest MAC CE that satisfies the MAC CE activation time.

44. The wireless communication method according to claim 43, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI or the MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for sending the source RS.

45. The wireless communication method according to claim 44, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI or the MAC CE is the SS / PBCH block, the periodic CSI-RS, or the SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the second panel entity is a periodic SRS or an SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

46. ​​A wireless communication method for SRS transmission executed by a base station, characterized in that, include: Configure SRS resource configuration and / or SRS resource set configuration for the UE; and The UE is equipped with one or more panel entities, which control the UE to apply the association between the panel entities and SRS resources, the spatial relationship of SP SRS transmission, and the spatial relationship of AP SRS transmission to perform SRS transmission; The base station is used to control the UE to determine the first transmission opportunity, wherein the UE applies the spatial relationship of SP SRS transmission derived from UL TCI; The UE determines the first transmission opportunity based on the Downlink Control Information (DCI) application time. Wherein, if the resource type in the SRS resource configuration is set to SP, and if the UE determines the first transmission timing only based on the DCI application time, the first transmission timing for applying the spatial relationship of the SP SRS transmission derived from the UL TCI is the first time slot at least Xms or Y symbols after the last symbol of the acknowledgment of the PDCCH carrying the joint or individual UL beam indication, wherein the UL TCI is included in the DCI, and the DCI in the PDCCH is used to schedule the PDSCH carrying the SP SRS activation MAC CE.

47. The wireless communication method according to claim 46, characterized in that, The SRS resource configuration and / or the SRS resource set configuration includes a panel entity index ID, and the base station controls the UE to select a corresponding panel entity associated with the panel entity ID for SRS transmission based on the panel entity ID.

48. The wireless communication method according to claim 47, characterized in that, The SRS resource configuration includes an SRS resource set, wherein the SRS resources in the SRS resource set are associated with the panel entity, and the panel entity ID is included in the SRS resource configuration to indicate the association between the panel entity and the SRS resource.

49. The wireless communication method according to claim 47, characterized in that, The SRS resource set configuration includes SRS resource sets associated with the panel entity. The association between the panel entity and the SRS resource is determined based on each SRS resource set, and the panel entity ID is included in the SRS resource set configuration to indicate the association between the panel entity and the SRS resource in the SRS resource set.

50. The wireless communication method according to claim 46, characterized in that, The association between the panel entity and the SRS resource is predefined and / or fixed.

51. The wireless communication method according to claim 50, characterized in that, The SRS resource configuration includes an SRS resource set, the SRS resources in the SRS resource set are associated with the panel entity, the mapping between the panel entity and the SRS resources is fixed, wherein the mapping between the panel entity and the SRS resources is predefined and aligned between the base station and the UE, and a first group of SRS resources is mapped to a first panel entity, and a second group of SRS resources is mapped to a second panel entity.

52. The wireless communication method according to claim 50, characterized in that, The SRS resource set configuration includes multiple SRS resource sets, each associated with a panel entity. The association between the panel entity and the SRS resource set is determined based on the SRS resource set. The mapping between the panel entity and the SRS resource set is fixed, wherein the mapping between the panel entity and the SRS resource set is predefined and aligned between the base station and the UE. A first set of SRS resource sets is mapped to a first panel entity, and a second set of SRS resource sets is mapped to a second panel entity.

53. The wireless communication method according to claim 46, characterized in that, in, The UE determines the first transmission opportunity based on the greater of the Media Access Control (MAC) CE activation time or the DCI application time and the MAC CE activation time.

54. The wireless communication method according to claim 46, characterized in that, If the resource type in the SRS resource configuration is set to SP, and if the base station controls the UE to determine the first transmission timing solely based on the MAC CE activation time, the first transmission timing applying the spatial relationship of the SP SRS transmission derived from the UL TCI is... The first time slot thereafter, wherein the UL TCI is included in the DCI of the scheduled SP SRS activated MAC CE, and It is the number of time slots in each subframe. It is the subcarrier spacing (SCS) configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in the time slot n corresponding to the PDSCH carrying the MAC CE activation command.

55. The wireless communication method according to claim 46, characterized in that, If the resource type in the SRS resource configuration is set to SP, and if the base station controls the UE to determine the first transmission timing based on the larger of the DCI application time and the MAC CE activation time, and the DCI application time is not less than the MAC CE activation time, the first transmission timing for applying the spatial relationship of the SP SRS transmission derived from the UL TCI is in the first time slot at least Xms or Y symbols after the last symbol of the acknowledgment of the PDCCH carrying joint or individual UL beam indication, wherein the UL TCI is included in the DCI, and the DCI in the PDCCH is used to schedule the PDSCH carrying the SP SRS activation MAC CE; and if the MAC CE activation time is greater than the DCI application ... carrying The first time slot thereafter, wherein the UL TCI is included in the DCI of the scheduled SP SRS activated MAC CE, and It is the number of time slots in each subframe. It is the subcarrier spacing (SCS) configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in the time slot n corresponding to the PDSCH carrying the MAC CE activation command.

56. The wireless communication method according to claim 46, characterized in that, During the activation period, the UE transmits SPSRS using a single spatial relationship or a flexible spatial relationship derived from the UL TCI indicated in the DCI or MAC CE.

57. The wireless communication method according to claim 56, characterized in that, A single spatial relationship is used for active SP SRS transmissions during the activation time, and the single spatial relationship is based on the UL TCI indicated in the DCI or the UL TCI indicated in the MAC CE.

58. The wireless communication method according to claim 57, characterized in that, If the resource type in the SRS resource configuration is set to SP, the spatial relationship derived from the UL TCI used for SP SRS transmission applies from the first transmission timing to the last transmission timing, wherein the UL TCI is included in the DCI used to schedule the PDSCH carrying the active MAC CE, or the UL TCI originates from the latest DCI that satisfies the DCI application time.

59. The wireless communication method according to claim 58, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

60. The wireless communication method according to claim 57, characterized in that, For SRS transmission based on multiple TRPs / panels, the spatial relationship of the SP SRS sent from the first panel entity is derived from the source RS of the UL TCI corresponding to the first panel entity in the DCI, and the spatial relationship of the SP SRS sent from the second panel entity is derived from the source RS of the UL TCI corresponding to the second panel entity in the DCI, wherein the DCI is used to schedule the PDSCH carrying the SP SRS activation MAC CE, or the DCI is the latest DCI that satisfies the DCI application time; The spatial relationship between the SP SRS transmitted from the first panel entity and the SP SRS transmitted from the second panel entity is applied from the first transmission timing to the last transmission timing.

61. The wireless communication method according to claim 60, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as receiving the source RS; and if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as the transmission of the source RS.

62. The wireless communication method according to claim 61, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI is the SS / PBCH block, the periodic CSI-RS, or the SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; and if the source RS in the UL TCI corresponding to the second panel entity is the periodic SRS or the SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

63. The wireless communication method according to claim 57, characterized in that, If the resource type in the SRS resource configuration is set to SP, and if the UL TCI is carried in the MAC CE, the UE uses the spatial relationship derived from the UL TCI in the MAC CE to transmit the SP SRS. The spatial relationship derived from the UL TCI for SP SRS transmission applies from the first transmission timing to the last transmission timing, wherein the UL TCI is contained in the MAC CE that satisfies the MAC CE activation time.

64. The wireless communication method according to claim 63, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

65. The wireless communication method according to claim 63, characterized in that, For SRS transmission based on multiple TRPs / panels, the spatial relationship of the SP SRS transmitted from the first panel entity is derived from the source RS of the UL TCI corresponding to the first panel entity in the MAC CE, and the spatial relationship of the SP SRS transmitted from the second panel entity is derived from the source RS of the UL TCI corresponding to the second panel entity in the MAC CE. The spatial relationship between the SP SRS transmitted from the first panel entity and the SP SRS transmitted from the second panel entity is applied from the first transmission timing to the last transmission timing.

66. The wireless communication method according to claim 65, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as receiving the source RS; and if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE transmits the target SRS resource from the first panel entity with the same spatial relationship as the transmission of the source RS.

67. The wireless communication method according to claim 66, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the MAC CE is the SS / PBCH block, the periodic CSI-RS, or the SPCSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the second panel entity is the periodic SRS or the SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

68. The wireless communication method according to claim 56, characterized in that, In a flexible spatial relationship, if the resource type in the SRS resource configuration is set to SP, for each SP SRS transmission within the activation time from the first transmission timing to the last transmission timing, the spatial relationship derived from the latest UL TCI for the SP SRS transmission is applied, wherein the UL TCI is contained in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time.

69. The wireless communication method according to claim 68, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

70. The wireless communication method according to claim 68, characterized in that, For SRS transmissions based on multiple TRPs / panels, for each SP SRS transmission from a first panel entity during the active time from the first transmission timing to the last transmission timing, the spatial relationship derived from the source RS of the UL TCI corresponding to the first panel entity is applied, wherein the UL TCI is included in the latest DCI satisfying the DCI application time or the latest MAC CE satisfying the MAC CE activation time; and for each SP SRS transmission from a second panel entity during the active time from the first transmission timing to the last transmission timing, the spatial relationship derived from the source RS of the ULTCI corresponding to the second panel entity is applied, wherein the UL TCI is included in the latest DCI satisfying the DCI application time or the latest MAC CE satisfying the MAC CE activation time.

71. The wireless communication method according to claim 70, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI or MAC CE is an SS / PBCH block, periodic CSI-RS, or SP CSI-RS, the UE transmits the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or SPSRS, the UE transmits the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

72. The wireless communication method according to claim 71, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI or MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the second panel entity is the periodic SRS or the SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

73. The wireless communication method according to claim 72, characterized in that, The SP SRS activation / deactivation MAC CE carries an index of the SP SRS resource set to be activated or deactivated. The SP SRS activation / deactivation MAC CE includes the following fields: cell ID of the SRS resource set, bandwidth portion BWP ID of the SRS resource set, supplementary uplink SUL, SP SRS resource set ID0, SP SRS resource set ID1, A / D, and R.

74. The wireless communication method according to claim 72, characterized in that, The SP SRS activation / deactivation MACCE includes a fixed size or a variable size. If the SP SRS activation / deactivation MACCE includes a variable size, then the SP SRS activation / deactivation MACCE also includes a C field.

75. The wireless communication method according to claim 61, characterized in that, The application of the AP SRS transmission by the UE includes the AP SRS transmission in the multi-TRP / panel-based SRS transmission triggered by the UE by adding fields or enhancing relevant higher-layer parameters.

76. The wireless communication method according to claim 75, characterized in that, The UE triggers the AP SRS transmission in a multi-TRP / panel-based SRS transmission by adding an SRS request field. The first SRS request field is used to trigger the AP SRS transmission from the first panel entity. A second SRS request field is added to trigger the AP SRS transmission from the second panel entity. A table is used to map the second SRS request field to the triggered AP SRS resource set sent from the second panel entity.

77. The wireless communication method according to claim 76, characterized in that, For SRS transmission based on multiple TRPs / panels, multiple SRS resource sets are configured in the SRS resource set list. Each SRS resource set corresponds to the value of an SRS request field. Each SRS resource set in the group corresponds to an AP SRS sent from a panel entity. The number of SRS resource sets in the group is equal to the number of panel entities used for AP SRS transmission, and the number of groups is equal to the number of valid states indicated by the SRS request field.

78. The wireless communication method according to claim 46, characterized in that, The spatial relationships used by the UE for AP SRS transmission include the spatial relationships being updated by the UE based on or not based on the MAC CE update command.

79. The wireless communication method according to claim 78, characterized in that, If the resource type in the SRS resource configuration is set to aperiodic, and if the base station controls the UE to determine the spatial relationship of the AP SRS transmission based on the MAC CE update command, the spatial relationship derived from the UL TCI used for the AP SRS transmission is obtained from the time slot. The first time slot thereafter is used, wherein the UL TCI is included in the latest DCI that meets the DCI application time or the latest MAC CE that meets the MAC CE activation time, and It is the number of time slots in each subframe. It is the SCS configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in the time slot n corresponding to the PDSCH carrying the MAC CE update command.

80. The wireless communication method according to claim 79, characterized in that, The UL TCI is carried in the DCI that triggers the APSRS.

81. The wireless communication method according to claim 79, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

82. The wireless communication method according to claim 79, characterized in that, For SRS transmissions based on multiple TRPs / panels, for the AP SRS transmissions from the first panel entity, the spatial relationships derived from the source RS of the UL TCI corresponding to the first panel entity are based on the time slots. The application begins in the first time slot thereafter, wherein the ULTCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time; for the AP SRS transmission from the second panel entity, the spatial relationship derived from the source RS of the ULTCI corresponding to the second panel entity is determined from the time slot. The application begins in the first time slot thereafter, wherein the UL TCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time, and It is the number of time slots in each subframe. It is the SCS configuration of the PUCCH, and the UE transmits the PUCCH with HARQ-ACK information in the time slot n corresponding to the PDSCH carrying the MAC CE update command.

83. The wireless communication method according to claim 82, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI or the MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for sending the source RS.

84. The wireless communication method according to claim 83, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI or the MAC CE is the SS / PBCH block, the periodic CSI-RS, or the SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; and if the source RS in the UL TCI corresponding to the second panel entity is a periodic SRS or SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

85. The wireless communication method according to claim 78, characterized in that, If the resource type in the SRS resource configuration is set to aperiodic, and if the base station controls the UE to determine the spatial relationship of APSRS transmission without a MAC CE update command, after the UE receives the DCI that triggers AP SRS, it applies the spatial relationship derived from the UL TCI used for AP SRS transmission, wherein the UL TCI is contained in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time.

86. The wireless communication method according to claim 85, characterized in that, The UL TCI is carried in the DCI that triggers the APSRS.

87. The wireless communication method according to claim 85, characterized in that, If the source RS in the UL TCI is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE transmits a target SRS resource with the same spatial relationship as the reception of the source RS; and if the source RS in the UL TCI is a periodic SRS or an SP SRS, the UE transmits the target SRS resource with the same spatial relationship as the transmission of the source RS.

88. The wireless communication method according to claim 86, characterized in that, For SRS transmissions based on multiple TRPs / panels, for the AP SRS transmission from a first panel entity, after the UE receives the DCI-triggered AP SRS, the spatial relationship derived from the source RS of the UL TCI corresponding to the first panel entity is applied, wherein the UL TCI is included in the latest DCI that satisfies the DCI application time or the latest MAC CE that satisfies the MAC CE activation time; and for the AP SRS transmission from a second panel entity, after the UE receives the DCI-triggered AP SRS, the spatial relationship derived from the source RS of the UL TCI corresponding to the second panel entity is applied, wherein the UL TCI is included in the latest DCI that satisfies the DCI corresponding time or the latest MAC CE that satisfies the MAC CE activation time.

89. The wireless communication method according to claim 88, characterized in that, If the source RS in the UL TCI corresponding to the first panel entity in the DCI or the MAC CE is an SS / PBCH block, a periodic CSI-RS, or an SP CSI-RS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the first panel entity is a periodic SRS or an SP SRS, the UE sends the target SRS resource from the first panel entity, and its spatial relationship is the same as the spatial relationship used for sending the source RS.

90. The wireless communication method according to claim 89, characterized in that, If the source RS in the UL TCI corresponding to the second panel entity in the DCI or the MAC CE is the SS / PBCH block, the periodic CSI-RS, or the SP CSI-RS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for receiving the source RS; while if the source RS in the UL TCI corresponding to the second panel entity is a periodic SRS or an SP SRS, the UE transmits the target SRS resource from the second panel entity, and its spatial relationship is the same as the spatial relationship used for transmitting the source RS.

91. A user equipment (UE), characterized in that, include: Memory; transceiver; as well as The processor is coupled to the memory and the transceiver; The processor is configured to perform the method according to any one of claims 1 to 45.

92. A base station, characterized in that, include: Memory; transceiver; and The processor is coupled to the memory and the transceiver; The processor is configured to perform the method according to any one of claims 46 to 90.

93. A non-transitory machine-readable storage medium having instructions stored thereon, characterized in that, When the instructions are executed by a computer, the computer performs the method according to any one of claims 1 to 90.

94. A chip, characterized in that, include: The processor is configured to invoke and run a computer program stored in memory to cause a device on which the chip is mounted to perform the method according to any one of claims 1 to 90.

95. A computer-readable storage medium, characterized in that, The computer program is stored therein, wherein the computer program causes the computer to perform the method according to any one of claims 1 to 90.

96. A computer program product, characterized in that, Includes a computer program, wherein the computer program causes the computer to perform the method according to any one of claims 1 to 90.

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