Systems and methods for transmissions over multiple sounding reference signal resources in multiple transmission / reception point operations

Abstract

Systems and methods for transmissions over multiple sounding reference signal resources in multiple transmit / receive point operations are presented. A wireless communication device can determine whether a condition that wireless communication device reporting supports simultaneous multiple physical uplink shared channel transmissions is satisfied. If this condition is satisfied, the wireless communication device is capable of simultaneous transmission of multiple physical uplink shared channel transmissions on multiple sounding reference signal resources. A wireless communication node can receive a plurality of physical uplink shared channel transmissions simultaneously on a plurality of sounding reference signal resources.

Description

Technical Field

[0001] This disclosure generally relates to wireless communications, including but not limited to systems and methods for transmitting over multiple probe reference signal resources in multi-transmitter / receiver point operation. Background Technology

[0002] Comprehensive coverage is a fundamental aspect of cellular network deployment. Mobile operators utilize various network nodes to extend coverage. New concepts, such as Integrated Access and Backhaul (IAB) systems, have been explored, eliminating the need for wired backhaul and improving network efficiency. Similarly, RF repeaters are another complement to extending 2G, 3G, and 4G network coverage. As the industry transitions to 5G New Radio (NR) systems, the combination of multiple-input multiple-output (MIMO) features and multiple transmit / receive point (MTRP) operation can further expand coverage and optimize network performance. Summary of the Invention

[0003] The exemplary embodiments disclosed herein are intended to address problems related to one or more of the problems presented in the prior art and provide additional features that will become apparent when taken into account in conjunction with the following drawings and by reference to the following detailed description. Exemplary systems, methods, apparatuses, and computer program products are disclosed herein according to various embodiments. However, it is to be understood that these embodiments are presented by way of example only and are not restrictive, and it will be apparent to those skilled in the art who have read this disclosure that various modifications can be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0004] At least one aspect relates to a system, method, apparatus, or computer-readable medium. A wireless communication device (e.g., a UE) may determine that at least one condition is satisfied, including: the wireless communication device reports support for simultaneous (e.g., at least partially overlapping or concurrent in the time domain) transmission of multiple physical uplink shared channels (PUSCH). In response to the satisfaction of at least one condition, the wireless communication device may simultaneously transmit on multiple sounding reference signal (SRS) resources occupying one or more resources in the same set. In some embodiments, the one or more resources in the same set may include at least one of resource blocks (RBs) or symbols. In some embodiments, the wireless communication device may determine that at least one condition is satisfied, which may include: the wireless communication device configuring multiple sets of SRS resources for codebook-based or non-codebook-based PUSCH transmission.

[0005] In some implementations, the wireless communication device can be configured with multiple sets of SRS resources for codebook-based PUSCH transmission. The wireless communication device can transmit simultaneously on only one SRS resource from each of the multiple sets of SRS resources, or the maximum number of SRS resources on which the wireless communication device can transmit simultaneously depends on the reporting capability of the wireless communication device. In some implementations, the wireless communication device can be configured with multiple sets of SRS resources for codebook-based PUSCH transmission. When the wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial domain modulation (SDM) scheme, up to two ports can be configured for each SRS resource. Similarly, when the wireless communication device supports simultaneous multiple PUSCH transmissions in a single frequency network (SFN) scheme, up to two or four ports can be configured for each SRS resource. The maximum number of SRS resources on which the wireless communication device can transmit simultaneously depends on the reporting capability of the wireless communication device.

[0006] In some implementations, the wireless communication device can be configured with multiple sets of SRS resources for non-codebook-based PUSCH transmission. The wireless communication device is capable of simultaneous transmission on all SRS resources from the multiple sets of SRS resources. The maximum number of SRS resources on which the wireless communication device can transmit simultaneously depends on the reporting capability of the wireless communication device.

[0007] In some implementations, a wireless communication device can be configured with multiple sets of SRS resources for non-codebook-based PUSCH transmission. The maximum number of SRS resources that the wireless communication device can transmit simultaneously on is less than or equal to the total number of SRS resources configured in the multiple sets of SRS resources. This maximum number is determined by the maximum number of transport layers for the multiple simultaneously transmitted PUSCHs associated with the multiple sets of SRS resources. When the wireless communication device supports simultaneous transmission of multiple PUSCHs in a spatial division multiplexing (SDM) scheme, the wireless communication device can transmit up to four SRS resources simultaneously. Similarly, when the wireless communication device supports simultaneous transmission of multiple PUSCHs in a single-frequency network (SFN) scheme, the wireless communication device can transmit up to two or four SRS resources simultaneously. The maximum number of SRS resources that the wireless communication device can transmit simultaneously on depends on the reporting capability of the wireless communication device.

[0008] In some implementations, the wireless communication device can be configured with multiple sets of SRS resources for non-codebook-based PUSCH transmission. The maximum number of SRS resources that the wireless communication device can transmit simultaneously from one SRS resource set is less than / less than the total number of SRS resources configured in the multiple SRS resource sets. The maximum number of SRS resources that the wireless communication device can transmit simultaneously from one SRS resource set is determined by the maximum number of transport layers of the PUSCH associated with one of the multiple SRS resource sets. When the wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial division multiplexing (SDM) scheme, the wireless communication device can transmit up to two SRS resources from the SRS resource set simultaneously. Similarly, when the wireless communication device supports simultaneous multiple PUSCH transmissions in a single-frequency network (SFN) scheme, the wireless communication device can transmit up to two or four SRS resources from the SRS resource set simultaneously. The maximum number of SRS resources that the wireless communication device can transmit simultaneously from that SRS resource set depends on the reporting capability of the wireless communication device.

[0009] In some implementations, the wireless communication device may determine that at least one condition is met, which may include: when the number of receive antenna ports equals the number of transmit antenna ports (i.e., x), the wireless communication device reports support for SRS antenna switching. The number of transmit antenna ports of the PUSCH associated with one of the multiple sets of SRS resources is at most x, and the number of transmit antenna ports of the PUSCH depends on the capabilities reported by the wireless communication device. The number of multiple sets of SRS resources used for codebook-based or non-codebook-based PUSCH transmissions can be at most a number "n", which is configured for the wireless communication device. The number of antenna ports for each SRS resource can be set at most x. The antenna ports of each SRS resource in a given set of multiple sets of SRS resources are associated with different antenna ports of the wireless communication device. The different antenna ports of the wireless communication device for an SRS resource are used for PUSCH transmissions associated with one of the multiple sets of SRS resources for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource can be configured in a different SRS resource group of multiple sets of SRS resources. Each set of SRS resources can be configured with " antennaSwitching The purpose of "(antenna switching)" is to allow for the use of multiple SRS resources, which can be up to a number of "m" and are configured for wireless communication devices. Each SRS resource can be configured with the same higher-layer parameters. resourceType The value of (resource type) is set to at least one of the following: periodic, semi-permanent, or aperiodic. The power control parameters for each group of SRS resources can be configured with different or independent values, or the beam state of each SRS resource can be different from the beam state of another SRS resource, or the beam state of each SRS resource can be independent of the beam state of another SRS resource.

[0010] In some implementations, the wireless communication device may determine that at least one condition is met, which may include: the wireless communication device reporting support for SRS antenna switching when the number of receive antenna ports is greater than / more than the number of transmit antenna ports (i.e., x). The number of transmit antenna ports of the PUSCH associated with one of the multiple sets of SRS resources is at most x, and the number of transmit antenna ports of the PUSCH depends on the capabilities reported by the wireless communication device. The number of multiple sets of SRS resources used for codebook-based or non-codebook-based PUSCH transmissions can be at most n, which is configured for the wireless communication device. The number of antenna ports for each SRS resource can be set at most x. The SRS port of each SRS resource in a given set of SRS resources is associated with a different antenna port of the wireless communication device. The different antenna ports of the wireless communication device for an SRS resource are used for PUSCH transmissions for codebook-based or non-codebook-based PUSCH associated with one of the multiple sets of SRS resources. Each SRS resource can be configured in a different SRS resource group of multiple sets of SRS resources. Each group of SRS resources can be configured with " antennaSwitching The purpose of "(antenna switching)" is to allow for the use of multiple SRS resources, which can be up to a number of "m" and are configured for wireless communication devices. Each SRS resource can be configured with the same higher-layer parameters. resourceType The value of (resource type) is set to at least one of the following: periodic, semi-permanent, or aperiodic. The power control parameters for each group of SRS resources can be configured with different or independent values, or the beam state of each SRS resource can be different from the beam state of another SRS resource, or the beam state of each SRS resource can be independent of the beam state of another SRS resource.

[0011] In some implementations, the wireless communication device may determine that at least one condition is met, which may include: the wireless communication device being configured to have a condition set to " beamManagement (Beam management) refers to multiple SRS resources for various purposes. Each SRS resource can be configured in a different SRS resource group within multiple SRS resource groups, and each SRS resource set can be configured with the same high-level parameters. resourceTypeThe value is set to at least one of the following: periodic, semi-persistent, or aperiodic. Each group of SRS resources can be configured with one or more SRS resources with one port (or a single port, 1-port), and each group of SRS resources can be configured with an identifier. The identifier can include at least one of panel identifier ID, group ID, or group ID. The maximum value of the identifier is equal to the value n (where n is a positive integer) corresponding to the number of SRS resource groups configured for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource can be associated with a different identifier configured for one group of SRS resources among multiple groups of SRS resources. The SRS port of each SRS resource in a given group of SRS resources among multiple groups of SRS resources is associated with a different antenna port of the wireless communication device. The power control parameters of each group of SRS resources can be configured with different or independent values, or the beam state of each SRS resource can be different from the beam state of another SRS resource, or the beam state of each SRS resource can be independent of the beam state of another SRS resource.

[0012] At least one aspect relates to a system, method, apparatus, or computer-readable medium. A wireless communication node (e.g., a base station) can receive multiple simultaneous transmissions from a wireless communication device on multiple sounding reference signal (SRS) resources occupying one or more resources in the same set. The simultaneous multiple transmissions are carried out in response to at least one condition being met, including: the wireless communication device being able to report support for multiple simultaneous Physical Uplink Shared Channel (PUSCH) transmissions.

[0013] In some implementations, the wireless communication device may transmit over multiple probe reference signal resources in multi-transmitter / receiver point operation according to at least one of the following example configurations or solutions: ● Example Configuration 1: On the SRS used for codebook-based PUSCH transmission, SRS from different panels can be transmitted simultaneously for uplink radio channel estimation of subsequent PUSCH transmissions.

[0014] ● Example Configuration 2: On SRS used for non-codebook-based PUSCH transmissions, SRS from different panels can be transmitted simultaneously for uplink radio channel estimation of subsequent PUSCH transmissions.

[0015] ● Example Configuration 3: On the SRS used for DCI CSI acquisition via antenna switching, the SRS is sent from different panels on the UE side to different TRPs (transmission-reception points) on the gNB side to obtain the DL CSI of the link between the panel and the TRP.

[0016] ● Example Configuration 4: On the SRS used for beam management, it is necessary to specify that the SRS can only be transmitted from different panels, and not from the same panel. Attached Figure Description

[0017] Various exemplary embodiments of this solution are described in detail below with reference to the following figures or drawings. These figures are provided for illustrative purposes only and depict only exemplary embodiments of this solution to aid the reader's understanding. Therefore, the figures should not be considered as limitations on the breadth, scope, or applicability of this solution. It should be noted that these figures are not necessarily drawn to scale for clarity and ease of explanation.

[0018] Figure 1 An example cellular communication network that can implement the techniques disclosed herein, according to embodiments of the present disclosure, is shown; Figure 2 Block diagrams of example base stations and user equipment according to some embodiments of the present disclosure are shown; Figure 3 This illustrates physical uplink shared channel transmission during single downlink control information scheduling based on a spatial domain modulation scheme in a multi-transmitter / receiver point operation of a 5G NR system, according to some embodiments of the present disclosure. Figure 4 This illustrates physical uplink shared channel transmission during single downlink control information scheduling based on a single-frequency network scheme in a multi-transmitter / receiver point operation of a 5G NR system, according to some embodiments of the present disclosure. Figure 5 The mapping of multiple probe reference signal ports via spatial filters to physical antennas is shown according to some embodiments of the present disclosure; Figure 6 Different probe reference signal resources, applied per panel to different spatial filters according to some embodiments of the present disclosure, are illustrated; and Figure 7 A flowchart is shown as an example method for transmitting over a probe reference signal in multi-transmit / receive point operation according to an embodiment of the present disclosure. Detailed Implementation

[0019] In this disclosure, the following terms may be used to define / explain / clarify one or more aspects of the disclosed technology.

[0020] ● "Simultaneous uplink transmission scheme" includes multiple uplink transmissions that can fully or partially overlap in the time domain. These simultaneous uplink transmissions can be associated with different panel / TRP IDs, and can be scheduled by a single DCI or multiple DCIs. Furthermore, whether the UE supports "simultaneous uplink transmission scheme" can be optionally reported as an optional UE capability.

[0021] ● “TRP” includes at least one of the following (or corresponds to or is associated with at least one of the following): SRS resource group, spatial relationship, power control parameter group, TCI status, CORESET (Control Resource Set). CORESETPoolIndex (Control resource set pool index), physical cell index (PCI), subarray, CDM (Code Division Multiplexing) group of DMRS (demodulation reference signal) port, CSI-RS resource group, or CMR (Channel Measurement Resource) set.

[0022] ● “UE panel” includes at least one of the following (or has a corresponding relationship with or is associated with at least one of the following): UE capability value set, antenna group, antenna port group, beam group, subarray, SRS resource group, spatial relationship, DMRS port group, CDM group, or panel mode.

[0023] ● The “PUSCH Antenna Port Index” includes (or corresponds to, or is associated with): uplink antenna ports starting with 0000. For example, PUSCH antenna port 0 is equivalent to uplink antenna port 0000, SRS port 1 is equivalent to uplink antenna port 0001, and so on.

[0024] ● “SRS port index” can refer to (or correspond to, or be associated with) uplink antenna ports starting from 1000. For example, SRS port 0 is equivalent to uplink antenna port 1000, SRS port 1 is equivalent to uplink antenna port 1001, and so on.

[0025] ● “Beam state” includes at least one of the following (or corresponds to or is associated with at least one of the following): Quasi-co-located (QCL) state, Transmit Configuration Indicator (TCI) state, spatial relationship (also known as spatial relationship information), reference signal (RS), spatial filter, or precoding. Furthermore, in this patent, “beam state” is also referred to as “beam”. Specifically: - "Tx beam" includes at least one of the following: QCL state, TCI state, spatial relationship state, DL reference signal, UL reference signal, Tx (Transmission) spatial filter or Tx precoding; - "Rx beam" includes at least one of the following: QCL state, TCI state, spatial relation state, spatial filter, Rx (Reception) spatial filter, or Rx precoding; - "Beam ID" includes at least one of the following: QCL state index, TCI state index, spatial relationship state index, reference signal index, spatial filter index, or precoding index.

[0026] ● Spatial filters can be either on the UE side or the gNB side, and spatial filters are also called spatial domain filters.

[0027] ● "Spatial relation" includes one or more reference RSs, or associated with one or more reference RSs, which represent the same or quasi-co-located "spatial relation" between the "RS or channel" of the target and one or more reference RSs.

[0028] ● “Spatial relation” also means / indicates at least one of the following: beam, spatial parameter or spatial domain filter. ● A “QCL ​​state” includes (or corresponds to, or is associated with): one or more reference RSs and their corresponding QCL type parameters, wherein the QCL type parameters include at least one of the following, or a combination thereof: [1] Doppler spread, [2] Doppler shift, [3] delay spread, [4] average delay, [5] average gain, and [6] spatial parameters (also known as spatial Rx parameters). A “TCI state” may refer to a “QCL ​​state”. In this disclosure, the following definitions / statements exist for 'QCL-TypeA', 'QCL-TypeB', 'QCL-TypeC', and 'QCL-TypeD'.

[0029] -'QCL-TypeA': 'QCL-TypeA': {Doppler frequency shift, Doppler spread, average delay, delay spread} -'QCL-TypeB': 'QCL-TypeB': {Doppler frequency shift, Doppler spread} -'QCL-TypeC': 'QCL-TypeC': {Doppler frequency shift, average delay} -'QCL-TypeD': {Space reception parameters} ● RS includes Channel State Information Reference Signal (CSI-RS), Synchronization Signal Block (SSB) (also known as SS / PBCH (Synchronization Signal / Physical Broadcast Channel)), Demodulation Reference Signal (DMRS), Sounding Reference Signal (SRS), and Physical Random Access Channel (PRACH). Furthermore, RS includes at least Downlink Reference Signaling (RS) and Uplink Reference Signaling (RS).

[0030] -DL RS includes at least CSI-RS, SSB, and DMRS (e.g., DL DMRS).

[0031] - UL RS includes at least SRS, DMRS (e.g., UL DMRS) and PRACH.

[0032] ● “UL signal” can be / including PUCCH transmission, PUSCH transmission or SRS.

[0033] ● “DL signal” can be / including PDCCH transmission, PDSCH transmission or CSI-RS.

[0034] ●The first and second SRS resource groups can be respectively determined by high-level parameters. srs-ResourceSetToAddModList (Add / edit list to SRS resource group) or srs-ResourceSetToAddModListDCI-0-2 The two configured SRS resource groups have lower and higher values. srs-ResourceSetId The resource group with (SRS resource group ID), and if txConfig = nonCodebook The first and second SRS resource groups can be respectively associated with a value of ' nonCodeBook It is related to the high-level parameter usage, if txConfig = codebook Then the first and second SRS resource groups can be respectively associated with the value ' codeBook It is associated with the high-level parameter usage.

[0035] ● "Uplink" includes at least one of PUSCH transmission, PUCCH transmission, SRS or PRACH transmission.

[0036] ● "Downlink" includes or may refer to at least one of PDSCH transmission, PDCCH transmission, CSI-RS, SSB, or DL-PRS.

[0037] ● PUSCH transmission includes (or is related to): PUSCH transmission timing.

[0038] ● The TPMI (Transmitted Precoding Matrix Indicator) field in DCI includes at least one of the following: the precoding information and layer number field in DCI, or the second precoding information field in DCI.

[0039] ● The SRI (SRS resource indicator) field in DCI includes at least one of the SRS resource indicator field in DCI or the second SRS resource indicator field in DCI.

[0040] ● DCI includes at least one of DCI format 0_1, DCI format 0_2, and DCI format 0_0.

[0041] 1. Mobile communication technology and environment Figure 1 An example wireless communication network and / or system 100 according to an embodiment of the present disclosure is illustrated, in which the technologies disclosed herein can be implemented. In the following discussion, the wireless communication network 100 can be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as "network 100". Such an example network 100 includes base stations 102 (hereinafter referred to as "BS 102", also called wireless communication nodes) and user equipment 104 (hereinafter referred to as "UE 104", also called wireless communication devices) that can communicate with each other via communication links 110 (e.g., wireless communication channels), and a cluster of cells 126, 130, 132, 134, 136, 138, and 140 covering a geographic area 101. Figure 1In this context, BS 102 and UE 104 are contained within their respective geographical boundaries in cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating on its allocated bandwidth to provide sufficient radio coverage to its intended users.

[0042] For example, BS 102 can operate on the allocated channel transmission bandwidth to provide sufficient coverage to UE 104. BS 102 and UE 104 can communicate via downlink radio frame 118 and uplink radio frame 124, respectively. Each radio frame 118 / 124 can also be divided into subframes 120 / 127, which may include data symbols 122 / 128. In this disclosure, BS 102 and UE 104 are described herein as "communication nodes," non-limiting examples of methods generally practiced therein. According to various embodiments of this solution, such communication nodes may be capable of wireless and / or wired communication.

[0043] Figure 2 A block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM (Orthogonal Frequency Division Multiplexing) / OFDMA (Orthogonal Frequency Division Multiple Access) signals) according to some embodiments of this solution is shown. System 200 may include components and elements configured to support known or conventional operating characteristics that do not need to be described in detail herein. In one illustrative embodiment, system 200 may be used in wireless communication environments (such as those described above) Figure 1 In a wireless communication environment 100, communication (e.g., sending and receiving) data symbols.

[0044] System 200 typically includes a base station 202 (hereinafter referred to as "BS 202") and a user equipment 204 (hereinafter referred to as "UE 204"). BS 202 includes a BS (Base Station) transceiver module 210 (hereinafter also referred to as: BS transceiver 210, transceiver 210), a BS antenna 212 (hereinafter also referred to as: antenna 212 or downlink antenna 212), a BS processor module 214 (hereinafter also referred to as: processor module 214), a BS memory module 216 (hereinafter also referred to as: memory module 216), and a network communication module 218, each module being coupled and interconnected with each other as needed via a data communication bus 220. UE 204 includes a UE (User Equipment) transceiver module 230 (also referred to as UE transceiver 230, transceiver 230), a UE antenna 232 (hereinafter also referred to as antenna 232 or uplink antenna 232), a UE memory module 234 (hereinafter also referred to as memory module 234), and a UE processor module 236 (hereinafter also referred to as processor module 236). Each module is coupled to and interconnected with each other as needed via a data communication bus 240. BS 202 communicates with UE 204 via communication channel 250 (hereinafter also referred to as wireless transmission link 250, wireless data communication link 250), which can be any wireless channel or other medium suitable for the data transmission described herein.

[0045] As those skilled in the art will understand, system 200 may also include, in addition to Figure 2 Any number of modules other than those shown. Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in conjunction with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are described in general terms of their functionality. Whether this functionality is implemented as hardware, firmware, or software may depend on the specific application and design constraints imposed on the system as a whole. Those skilled in the art described herein can implement this functionality appropriately for each specific application; however, such implementation decisions should not be construed as limiting the scope of this disclosure.

[0046] According to some embodiments, UE transceiver 230 may be referred to herein as an "uplink" transceiver 230 including a radio frequency (RF) transmitter and an RF receiver, each RF transmitter and RF receiver including circuitry coupled to antenna 232. A duplex switch (not shown) may alternately couple the uplink transmitter or receiver to the uplink antenna in a time-duplex manner. Similarly, according to some embodiments, BS transceiver 210 may be referred herein as a "downlink" transceiver 210 including an RF transmitter and an RF receiver, each RF transmitter and RF receiver including circuitry coupled to antenna 212. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in a time-division duplex manner. The operation of the two transceiver modules 210 and 230 may be time-coordinated such that the uplink receiver circuitry is coupled to the uplink antenna 232 so that transmissions are received over the wireless transmission link 250 while the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operation of the two transceivers 210 and 230 can be time-coordinated so that the downlink receiver is coupled to the downlink antenna 212, so that transmissions can be received via the wireless transmission link 250 while the uplink transmitter is coupled to the uplink antenna 232. In some embodiments, there is tight time synchronization with a minimum guard time between changes in the duplex direction.

[0047] UE transceiver 230 and base transceiver 210 are configured to communicate via wireless data communication link 250 and cooperate with RF antenna arrangements 212 / 232 appropriately configured to support specific wireless communication protocols and modulation schemes. In some illustrative embodiments, UE transceiver 210 and base transceiver 210 are configured to support industry standards, such as Long Term Evolution (LTE) and emerging 5G standards. However, it should be understood that this disclosure is not necessarily limited to application to specific standards and related protocols. Rather, UE transceiver 230 and base transceiver 210 may be configured to support alternative or additional wireless data communication protocols (including future standards or variations thereof).

[0048] According to various embodiments, BS 202 may be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femtocell, or a picocell. In some embodiments, UE 204 may be implemented in various types of user equipment, such as mobile phones, smartphones, personal digital assistants (PDAs), tablets, laptops, wearable computing devices, etc. Processor modules 214 and 236 may be implemented or realized using a general-purpose processor, content-addressable memory, digital signal processor, application-specific integrated circuit, field-programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this way, the processor may be implemented as a microprocessor, a controller, a microcontroller, a state machine, etc. The processor may also be implemented as a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other combination of such configurations.

[0049] Furthermore, the steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be directly implemented in hardware, firmware, software modules executed by processor modules 214 and 236 respectively, or any practical combination thereof. Memory modules 216 and 234 can be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 can be coupled to processor modules 210 and 230 respectively, such that processor modules 210 and 230 can read information from and write information to memory modules 216 and 234 respectively. Memory modules 216 and 234 can also be integrated into their respective processor modules 210 and 230. In some embodiments, memory modules 216 and 234 may each include cache memory for storing temporary variables or other intermediate information during the execution of instructions executed by processor modules 210 and 230 respectively. Memory modules 216 and 234 may each include non-volatile memory for storing instructions to be executed by processor modules 210 and 230, respectively.

[0050] Network communication module 218 typically represents the hardware, software, firmware, processing logic, and / or other components of base station 202 that enable bidirectional communication between base station transceiver 210 and other network components and communication nodes configured to communicate with base station 202. For example, network communication module 218 may be configured to support Internet or WiMAX (World Interoperability for Microwave Access) services. In a typical deployment, but without limitation, network communication module 218 provides an 802.3 Ethernet interface, allowing base station transceiver 210 to communicate with traditional Ethernet-based computer networks. In this way, network communication module 218 may include a physical interface for connecting to a computer network (e.g., a Mobile Switching Center (MSC)). The terms “configured as,” “configured to,” and their variations, used herein with respect to a specified operation or function, refer to a device, component, circuit, structure, machine, signal, etc., which is physically constructed, programmed, formatted, and / or arranged to perform a specified operation or function.

[0051] The Open Systems Interconnection (OSI) model (referred to herein as the "OSI model") is a conceptual and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) for interconnecting and communicating with other systems. The model is divided into seven sub-components or layers, each representing a conceptual set of services provided to its upper and lower layers. The OSI model also defines logical networks and efficiently describes computer packet transmission using different layer protocols. The OSI model may also be referred to as the seven-layer OSI model or the seven-layer model. In some embodiments, the first layer may be the physical layer. In some embodiments, the second layer may be the Medium Access Control (MAC) layer. In some embodiments, the third layer may be the Radio Link Control (RLC) layer. In some embodiments, the fourth layer may be the Packet Data Convergence Protocol (PDCP) layer. In some embodiments, the fifth layer may be the Radio Resource Control (RRC) layer. In some embodiments, the sixth layer may be the Non-Access Stratum (NAS) layer or the Internet Protocol (IP) layer, and the seventh layer is other layers.

[0052] Various exemplary embodiments of this solution are described below with reference to the accompanying drawings to enable those skilled in the art to create and use this solution. As will be apparent to those skilled in the art, various changes or modifications can be made to the examples described herein without departing from the scope of this solution after reading this disclosure. Therefore, this solution is not limited to the exemplary embodiments and applications described and illustrated herein. Furthermore, the specific order or hierarchy of steps in the methods disclosed herein is merely exemplary. Based on design preferences, the specific order or hierarchy of steps in the disclosed methods or processes can be rearranged while remaining within the scope of this solution. Therefore, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or actions in an exemplary order, and unless otherwise expressly stated, this solution is not limited to the specific order or hierarchy presented.

[0053] 2. Used for transmitting over multiple probe reference signal (SRS) resources in multiple transmit / receive point (TRP) operations. Systems and methods Current 5G New Radio (NR) systems support multiple transmission / reception point (MTRP) operation for uplink (UL) transmissions. However, due to limitations in current UE capabilities, multiple uplink transmissions can only be executed non-overlappingly in the time domain. Therefore, even with multiple antenna panels, a UE can only perform one uplink transmission at a time. This limitation restricts the reliability and throughput of UL transmissions. For example, if a UE wants to transmit multiple signals, it may have to transmit them one after another in the time domain. This leads to latency and reduces the accuracy of channel state information (CSI) measurements.

[0054] To overcome this limitation, the solution is to allow the UE to transmit multiple uplink transmissions simultaneously. As detailed in this paper, current specifications focus on enabling multiple SRS transmissions. The SRS transmission signal is an important uplink reference signal that can be used for various purposes, such as codebook-based and non-codebook-based Physical Uplink Shared Channel (PUSCH) transmissions, antenna switching, beam management, and uplink positioning. This will enable the UE to transmit data from different antenna panels simultaneously, thereby improving the accuracy of CSI measurements and reducing latency.

[0055] 5G NR includes numerous MIMO (Multiple-Input Multiple-Output) features, which facilitate the use of a large number of antenna elements in base stations for both sub-6 GHz (frequency range 1, FR1) and above 6 GHz (frequency range 2, FR2) bands. One of these features is multi-TRP operation, which allows the base station to cooperate with multiple TRPs to send or receive data to or from the UE. This can improve transmission performance by increasing differentiation and spatial multiplexing gain.

[0056] Current reference Figure 3 This diagram illustrates PUSCH transmission during MTRP operation in a 5G NR system, simultaneously with single downlink control information (DCI) scheduling based on a spatial domain modulation (SDM) scheme. As shown, during MTRP operation, the UE can transmit multiple layers of PUSCH to different TRPs and associate them with different SRS resource groups (e.g., SRS resource group 1, SRS resource group 2, etc.). The precoder, rank, and selected SRS resources (one or more) of the PUSCH transmitted from each panel are indicated by the first and second TPMI / SRI fields, respectively. For example, in... Figure 3 In this process, the UE sends a layer of PUSCH 1 to TRP 1 and a layer of PUSCH 2 to TRP 2. The precoder, rank, and SRS resources selected by the PUSCH transmitted from panel 1 are indicated by the first TPMI / SRI field, while the precoder, rank, and SRS resources selected by the PUSCH transmitted from panel 2 are indicated by the second TPMI / SRI field. When the UE switches to single transmission reception point (STRP) operation (e.g., T1 or T2 is turned off), a PUSCH transmission from one panel can be associated with a group of SRS resources. The precoder, rank, and SRS resources selected by the PUSCH transmitted from one panel are indicated by the first or second TPMI / SRI field.

[0057] Current reference Figure 4 This illustration depicts simultaneous PUSCH transmissions during a single DCI scheduling based on a single-frequency network (SFN) scheme in MTRP operation within a 5G NR system. In MTRP operation, all identical Layer / DMRS ports for a single PUSCH are simultaneously transmitted from different UE panels to different TRPs. These PUSCH transmissions are associated with different SRS resource groups, where the precoder, rank, and (one or more) selected SRS resources for each PUSCH transmission from each panel are indicated by the first and second TPMI / SRI fields. For example, as... Figure 4As shown, the UE sends a layer of PUSCH 1 to TRP 1 and a layer of PUSCH 1' to TRP 2. The SRS resources selected by the precoder, rank sum (or more) of the PUSCH transmitted from panel 1 are indicated by the first TPMI / SRI field, while the SRS resources selected by the precoder, rank sum (or more) of the PUSCH transmitted from panel 2 are indicated by the second TPMI / SRI field. When the UE switches to STRP operation, a PUSCH transmission from one panel can be associated with an SRS resource group, and the SRS resources selected by the precoder, rank sum, and PUSCH transmitted from one panel can be indicated by either the first or second TPMI / SRI field.

[0058] In wireless communication systems, SRS can be configured / provided for different transmission modes: periodic, semi-persistent, or aperiodic transmission. Periodic SRS is transmitted at fixed intervals according to a configured period and a time slot offset within that period. Similarly, semi-persistent SRS follows a similar configuration to periodic SRS, but its actual transmission is activated and deactivated via MAC CE signaling / protocol. On the other hand, aperiodic SRS is transmitted only when explicitly triggered by DCI. Specifically, DCI format 0-1 (Uplink Scheduling Grant) and DCI format 1-1 (Downlink Scheduling Allocation) contain a 2-bit SRS request field, which can trigger transmission in one of three different aperiodic SRS resource groups configured for the UE.

[0059] A UE can configure one or more SRS resource groups, where each group includes one or more configured SRSs. All SRSs within a configured SRS resource group are of the same type and are periodic, semi-persistent, or aperiodic in terms of transmission. For codebook-based PUSCH transmissions, the number of SRS resources configured in an SRS resource group depends on the UE's capabilities. Specifically, up to 2 or 4 resources with usage set to "" can be configured. codebook (Codebook) SRS resources. Similarly, for non-codebook-based PUSCH transmissions, depending on the UE capability, an SRS resource group can accommodate a maximum of 4 uses set to ' nonCodebook (Non-codebook) SRS resources. For SRS used for DL ​​CSI acquisition via antenna switching, depending on UE capabilities, at least one SRS resource group can be configured with a purpose set to "". antennaSwitching (Antenna switching) SRS resources. Similarly, for SRS used for beam management, depending on the UE capabilities, at least one SRS resource group can be configured with the purpose set to "(Antenna switching)". beamManagement SRS resources for "(beam management)".

[0060] In 5G NR, the UE antenna switching capability for SRS transmission can be indicated by 'xTyR'. Specifically, 'xTyR' indicates / indicates that the UE has (or is configured to) transmit SRS signals through "x" antenna ports, and uses a total of "y" antennas for this purpose. The value of "y" corresponds to all or a subset of the receive antennas present in the UE's configuration. When the UE transmits SRS on multiple antenna ports, different ports can share the same set of resource elements and the same basic SRS sequence. Antenna ports can be numbered in a specific way, with different ranges of numbering used for different purposes. For example, uplink antenna ports starting from 0000 are used for PUSCH associated with DMRS, while uplink antenna ports starting from 1000 are used for SRS.

[0061] In SRS transmission, the use of multiple SRS ports (M-SRS ports) involves mapping. For example, an SRS port is not directly linked to a device's physical antenna, but can be associated with a spatial filter F. The spatial filter F facilitates the mapping of the M-SRS port to N physical antennas, such as... Figure 5 As shown in the figure, the mapping process embodies a transformation where the SRS antenna port is converted into a set of physical antennas, thereby achieving optimized transmission. Transmissions from different panels within the system can correspond to different spatial filters F, such as... Figure 6 As shown.

[0062] In some example implementations, simultaneous SRS transmission can be enabled for codebook-based PUSCH if at least one of a certain condition is met. The first condition is a UE capability report indicating support for simultaneous PUSCH transmission. This capability can be triggered by a single DCI of a PUSCH transmitted in an SDM or SFN scheme. The condition may involve multiple DCI triggers, allowing / enabling more than one PUSCH to be transmitted in the same time domain. Once the UE recognizes that at least one condition is met, the UE can respond by simultaneously transmitting on multiple SRS resources. These SRS resources may occupy one or more specific resources in the same group to ensure coordinated SRS transmission.

[0063] The second condition may include the configuration of a UE with multiple SRS resource groups dedicated to codebook-based PUSCH transmissions. These SRS resource groups can be configured within specified parameters, such as... srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2 Each SRS resource group can be configured / provided with settings that are set to " codebookThe purpose of this condition is to configure the correlation between each SRS resource group and codebook-based PUSCH transmissions. The UE can verify that this condition is met by confirming the existence of multiple SRS resource groups configured for codebook-based PUSCH transmissions. The third condition for codebook-based uplink transmissions is the maximum number of SRS resources that can be configured for each SRS resource group. This maximum number can be configured to be at least 1, 2, or 4. The fourth condition includes the configuration of the SRS port for each individual SRS resource. The ability to set the SRS port to values ​​such as 1, 2, 4, or 8 can enhance adaptability, for example, supporting multiple simultaneous transmissions.

[0064] In some configurations, a UE can simultaneously transmit more than one SRS resource from multiple SRS resource groups. In some implementations, one SRS resource from each SRS resource group (e.g., only one SRS resource) can be transmitted simultaneously. This simultaneous transmission occurs when the UE (e.g., a wireless communication device) reports that it supports multiple simultaneous PUSCH transmissions. These SRS resource groups are configured to occupy the same resource blocks (RBs) and / or symbols. For example, if two SRS resource groups are configured, up to two SRS resources from these two SRS resource groups can be transmitted simultaneously. As detailed herein, the maximum number of SRS resources that can be transmitted simultaneously depends on the UE's capabilities.

[0065] In some configurations, the specific port configuration depends on the UE's capabilities. For example, if the UE reports support for simultaneous PUSCH transmission in the SDM scheme, up to two ports can be configured / provided for each SRS resource. Similarly, if the UE reports support for simultaneous PUSCH transmission in the SFN scheme, up to two or four ports can be configured for each SRS resource. The maximum number of SRS resources that can be transmitted simultaneously depends on the UE's capabilities.

[0066] In some example implementations, simultaneous SRS transmission can be enabled for codebook-based PUSCH if at least one of a certain condition is met. The first condition is a report of UE capabilities indicating support for simultaneous PUSCH transmission. This capability may involve a single DCI-triggered PUSCH transmission in an SDM or SFN scheme, or multiple DCI-triggered PUSCH transmissions of more than one in the same time domain. The second condition includes the configuration of a UE with multiple SRS resource groups dedicated to non-codebook-based PUSCH transmission. These SRS resource groups are configured / provided within specified parameters, such as... srs- ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2 Each SRS resource group can be configured with a setting to " nonCodebookThe purpose of this is to configure the correlation between each SRS resource group and non-codebook-based PUSCH transmissions. The UE can verify that this condition is met by confirming the existence of multiple SRS resource groups configured for non-codebook-based PUSCH transmissions. A third condition for non-codebook-based uplink transmissions is the maximum number of SRS resources that can be configured for each SRS resource group. This maximum number can be configured to be at least one of 1, 2, 3, or 4. The maximum number of SRS resources that can be transmitted simultaneously depends on the UE's capabilities. UE capabilities can be determined via parameters... maxNumberSRS- ResourceTx The maximum number of Tx SRS resources is indicated. The fourth condition includes the configuration of one SRS port for each individual SRS resource.

[0067] In some configurations, a UE can simultaneously transmit more than one SRS resource from multiple SRS resource groups. In some implementations, one SRS resource from each SRS resource group (e.g., only one SRS resource) can be transmitted simultaneously. This simultaneous transmission can occur when the UE reports that it supports multiple simultaneous PUSCH transmissions. These SRS resource groups are configured to occupy the same RBs and / or symbols. For example, if four SRS resources are configured in each of two SRS resource groups, eight SRS resources can be transmitted simultaneously. As detailed herein, the maximum number of SRS resources that can be transmitted simultaneously depends on the UE's capabilities. For example, UE capabilities can be determined by parameters... maxNumberSRS-ResourceTx or maxNumberSRS-ResourceTxAcrossMulti-Sets Indicates the maximum number of Tx SRS resources across multiple groups.

[0068] In some configurations, a UE can simultaneously transmit more than one SRS resource from multiple SRS resource groups. In some implementations, one SRS resource from each SRS resource group (e.g., only one SRS resource) can be transmitted simultaneously. This simultaneous transmission can occur when the UE reports that it supports simultaneous transmission of multiple PUSCHs. These SRS resource groups are configured to occupy the same RBs and / or symbols. The maximum number of SRS resources that can be transmitted simultaneously can be less than / less than the total number of SRS resources configured in the multiple SRS resource groups. For example, four SRS resources can be configured in each of two SRS resource groups, but the maximum number of SRS resources that can be transmitted simultaneously is 4. In some implementations, the maximum number of SRS resources that can be transmitted simultaneously can be determined by the maximum number of transport layers for all simultaneously transmitted PUSCHs associated with more than one configured SRS resource group.

[0069] If the UE report (e.g., sending a report to the BS or wireless communication node) supports simultaneous PUSCH transmission in the SDM scheme, then up to four SRS resources can be used for simultaneous transmission. Similarly, if the UE report supports simultaneous PUSCH transmission in the SFN scheme, then up to two or four SRS resources can be used for simultaneous transmission. As detailed herein, the maximum number of SRS resources that can be used for simultaneous transmission depends on the UE capability. For example, the UE capability can be determined by parameters... maxNumberSRS-ResourceTx or maxNumberSRS-ResourceTxAcrossMulti-Sets Give instructions.

[0070] In some configurations, a UE can transmit on / using more than one SRS resource from an SRS resource group. In some implementations, one SRS resource from each SRS resource group (e.g., only one SRS resource) can be used for simultaneous transmission. Such simultaneous transmission can occur when the UE reports that it supports multiple simultaneous PUSCH transmissions. These SRS resource groups are configured to occupy the same RBs and / or symbols. The maximum number of SRS resources from each SRS resource group used for simultaneous transmission can be less than the total number of SRS resources configured in each SRS resource group. For example, if each of two SRS resource groups is configured with 4 SRS resources, the maximum number of SRS resources from each SRS resource group that can be transmitted simultaneously is 2. In some implementations, the maximum number of SRS resources from each SRS resource that can be used for simultaneous transmission can be determined by the maximum number of transport layers for PUSCHs associated with a configured SRS resource group. For example, if the maximum number of transport layers for PUSCH associated with an SRS resource group is 2, then the maximum number of SRS resources from that SRS resource group is also 2.

[0071] If the UE reports support simultaneous PUSCH transmission in the SDM scheme, then up to two SRS resources from one SRS resource group can be used for simultaneous transmission. Similarly, if the UE reports support simultaneous PUSCH transmission in the SFN scheme, then up to two or four SRS resources from one SRS resource group can be used for simultaneous transmission. As detailed herein, the maximum number of SRS resources from an SRS resource group that can be used for simultaneous transmission depends on the UE's capabilities. For example, UE capabilities can be determined by parameters... maxNumberSRS-ResourceTx or maxNumberSRS-ResourceTxofOne-Set Indicates the maximum number of Tx SRS resources in a group.

[0072] In some example implementations, simultaneous SRS transmission via xT=xR antenna switching for DL ​​CSI acquisition can be enabled if at least one specific condition is met. The first condition is a UE capability report indicating support for simultaneous PUSCH transmission. This capability may involve a single DCI-triggered PUSCH transmission in an SDM or SFN scheme, or multiple DCI-triggered PUSCH transmissions of more than one in the same time domain. The second condition includes the configuration of a UE with multiple (n, where n>1) SRS resource groups for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource group can be configured / provided with settings set to " codebook (Codebook) or " nonCodebook The purpose of "(non-codebook)" is as follows. The number of transmit antenna ports of the PUSCH associated with an SRS resource group can be at most x, which depends on the UE capability report. The value of x can be 1, 2, 4, or 8. The third condition is that the UE reports its ability to support SRS antenna switching if the number of receive antenna ports is equal to the number of transmit antenna ports. The reported value can be at least one of 1T=1R, 2T=2R, 4T=4R, or 8T=8R.

[0073] In some configurations, the UE can transmit on multiple SRS resources occupying the same symbol(s) and / or RBs for DL ​​CSI acquisition. The number of antenna ports for each SRS resource can be set to a maximum of x. For example, if x is set to 1, this is for SRS antenna handover based on 1T=1R corresponding to an SRS resource group. Similarly, if x is set to 2, this is for SRS antenna handover based on 2T=2R corresponding to an SRS resource group. Similarly, if x is set to 4, this is for SRS antenna handover based on 4T=4R corresponding to an SRS resource group. Similarly, if x is set to 8, this is for SRS antenna handover based on 8T=8R corresponding to an SRS resource group.

[0074] In some configurations, one or more antenna ports of each SRS resource in a given group can be associated with one or more different UE antenna ports. One or more different UE antenna ports of an SRS resource can be used for the PUSCH associated with the SRS resource group.

[0075] a) For the first example, in the case of SRS antenna switching based on 1T=1R, the antenna port 1000 of the first 1-port SRS in an SRS resource group can be associated with the antenna port 0000 of the PUSCH associated with the first SRS resource group. Similarly, the antenna port 1001 of the second 1-port SRS in another SRS resource group can be associated with the antenna port 0001 of the PUSCH associated with the second SRS resource group.

[0076] (b) For the second example, in the case of SRS antenna switching based on 2T=2R, antenna ports 1000~1001 of the first 2-port SRS in an SRS resource group can be associated with antenna ports 0000~0001 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1002~1003 of the second 2-port SRS in another SRS resource group can be associated with antenna ports 0002~0003 of the PUSCH associated with the second SRS resource group. c) For the third example, in the case of SRS antenna switching based on 4T=4R, antenna ports 1000~1003 of the first 4-port SRS in an SRS resource group can be associated with antenna ports 0000~0003 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1004~1007 of the second 4-port SRS in another SRS resource group can be associated with antenna ports 0004~0007 of the PUSCH associated with the second SRS resource group, respectively.

[0077] d) For the fourth example, in the case of SRS antenna switching based on 8T=8R, antenna ports 1000~1007 of the first 8-port SRS in an SRS resource group can be associated with antenna ports 0000~0007 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1008~1015 of the second 8-port SRS in another SRS resource group can be associated with antenna ports 0008~0015 of the PUSCH associated with the second SRS resource group.

[0078] e) For the first example, in the case of SRS antenna switching based on 1T=1R, the antenna port 1000 of the first 1-port SRS in an SRS resource group can be associated with the antenna port 0000 of the PUSCH associated with the first SRS resource group. Similarly, the antenna port 1000 of the second 1-port SRS in another SRS resource group can be associated with the antenna port 0001 of the PUSCH associated with the second SRS resource group.

[0079] f) For the second example, in the case of SRS antenna switching based on 2T=2R, antenna ports 1000~1001 of the first 2-port SRS in an SRS resource group can be associated with antenna ports 0000~0001 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1000~1001 of the second 2-port SRS in another SRS resource group can be associated with antenna ports 0002~0003 of the PUSCH associated with the second SRS resource group.

[0080] g) For the third example, in the case of SRS antenna switching based on 4T=4R, antenna ports 1000~1003 of the first 4-port SRS in an SRS resource group can be associated with antenna ports 0000~0003 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1000~1003 of the second 4-port SRS in another SRS resource group can be associated with antenna ports 0004~0007 of the PUSCH associated with the second SRS resource group.

[0081] h) For the fourth example, in the case of SRS antenna switching based on 8T=8R, antenna ports 1000~1007 of the first 8-port SRS in an SRS resource group can be associated with antenna ports 0000~0007 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1000~1007 of the second 8-port SRS in another SRS resource group can be associated with antenna ports 0008~0015 of the PUSCH associated with the second SRS resource group.

[0082] In some configurations, each SRS resource can be configured in a different SRS resource group. Each SRS resource group can be configured with a setting to " antennaSwitching The purpose of "(antenna switching)" is as follows. The number of SRS resource groups can be at most "m", where the value of m is equal to the value of n, which corresponds to the number of SRS resource groups configured for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource group can be configured with the same higher-layer parameters. resourceType The value can be set to at least one of "periodic," "semi-persistent," or "aperiodic." In some configurations, the power control parameters for each SRS resource group can be configured to different / independent values. Power control parameters can include at least one of alpha, p0, pathlossReferenceRS, or srs-PowerControlAdjustmentStates. The beam state for each SRS resource can be different / independent. The beam state can be configured using spatialRelationInfo or srs-TCI-State.

[0083] In some example implementations, simultaneous SRS transmission via xTyR antenna switching for DL ​​CSI acquisition can be enabled if at least one specific condition is met. The first condition is a UE capability report indicating support for simultaneous PUSCH transmission. This capability may involve a single DCI-triggered PUSCH transmission in an SDM or SFN scheme, or multiple DCI-triggered PUSCH transmissions of more than one in the same time domain. The second condition includes a UE configuration with multiple (n, where n>1) SRS resource groups for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource group can be configured with a setting to " codebook (Codebook) or " nonCodebook The purpose of "(non-codebook)" is as follows. The number of transmit antenna ports of the PUSCH associated with an SRS resource group can be at most x, which depends on the UE capability report. The value of x can be 1, 2, or 4. The third condition is that if the number of receive antenna ports is greater than the number of transmit antenna ports, the UE reports its ability to support SRS antenna switching. The reported value can be at least one of 1T2R, 1T4R, 1T6R, 1T8R, 2T4R, 2T6R, 2T8R, or 4T8R.

[0084] In some configurations, the UE can transmit on multiple SRS resources occupying the same symbol(s) and / or RBs for DL ​​CSI acquisition. The number of antenna ports for each SRS resource can be set to a maximum of x. For example, if x is set to 1, this is for SRS antenna handover based on 1T2R, 1T4R, 1T6R, or 1T8R corresponding to an SRS resource group. Similarly, if x is set to 2, this is for SRS antenna handover based on 2T4R, 2T6R, or 2T8R corresponding to an SRS resource group. Similarly, if x is set to 4, this is for SRS antenna handover based on 4T8R corresponding to an SRS resource group.

[0085] In some configurations, one or more antenna ports of each SRS resource in a given group can be associated with one or more different UE antenna ports. One or more different UE antenna ports of an SRS resource can be used for the PUSCH associated with the SRS resource group.

[0086] a) For the first example, in the case of SRS antenna switching based on 1T2R, 1T4R, 1T6R, or 1T8R, the antenna port 1000 of the first 1-port SRS in the SRS resource group can be associated with the antenna port 0000 of the PUSCH associated with the first SRS resource group. Similarly, the antenna port 1001 of the second 1-port SRS in another SRS resource group can be associated with the antenna port 0001 of the PUSCH associated with the second SRS resource group.

[0087] (b) For the second example, in the case of antenna switching based on 2T4R, 2T6R, or 2T8R, antenna ports 1000-1001 of the first 2-port SRS in an SRS resource group can be associated with antenna ports 0000-0001 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1002-1003 of the second 2-port SRS in another SRS resource group can be associated with antenna ports 0002-0003 of the PUSCH associated with the second SRS resource group.

[0088] c) For the third example, in the case of 4T8R-based SRS antenna switching, antenna ports 1000~1003 of the first 4-port SRS in an SRS resource group can be associated with antenna ports 0000~0003 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1004~1007 of the second 4-port SRS in another SRS resource group can be associated with antenna ports 0004~0007 of the PUSCH associated with the second SRS resource group. d) For the first example, in the case of SRS antenna switching based on 1T2R, 1T4R, 1T6R, or 1T8R, the antenna port 1000 of the first 1-port SRS in the SRS resource group can be associated with the antenna port 0000 of the PUSCH associated with the first SRS resource group. Similarly, the antenna port 1000 of the second 1-port SRS in another SRS resource group can be associated with the antenna port 0001 of the PUSCH associated with the second SRS resource group. e) For the second example, in the case of antenna switching based on 2T4R, 2T6R, or 2T8R, antenna ports 1000-1001 of the first 2-port SRS in an SRS resource group can be associated with antenna ports 0000-0001 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1000-1001 of the second 2-port SRS in another SRS resource group can be associated with antenna ports 0002-0003 of the PUSCH associated with the second SRS resource group. f) For the third example, in the case of 4T8R-based SRS antenna switching, antenna ports 1000-1003 of the first 4-port SRS in an SRS resource group can be associated with antenna ports 0000-0003 of the PUSCH associated with the first SRS resource group. Similarly, antenna ports 1000-1003 of the second 4-port SRS in another SRS resource group can be associated with antenna ports 0004-0007 of the PUSCH associated with the second SRS resource group.

[0089] In some configurations, each SRS resource can be configured into a different SRS resource group. Each SRS resource group can be configured / provided with settings such as "". antennaSwitching The purpose of the SRS resource group is as follows: The number of SRS resource groups can be at most "m", where the value of m is equal to the value of n, which corresponds to the number of SRS resource groups configured for codebook-based or non-codebook-based PUSCH transport. Each SRS resource group can be configured with the same higher-layer parameters. resourceType The value can be set to at least one of "periodic," "semi-persistent," or "aperiodic." In some configurations, the power control parameters for each SRS resource group can be configured to different / independent values. Power control parameters can include at least one of alpha, p0, pathlossReferenceRS, or srs-PowerControlAdjustmentStates. The beam state for each SRS resource can be different / independent. The beam state can be configured using spatialRelationInfo or srs-TCI-State.

[0090] In some example implementations, simultaneous transmission of SRS for beam management can be enabled if at least one of a certain condition is met. The first condition is a UE capability report indicating support for simultaneous PUSCH transmission. This capability may involve a single DCI-triggered PUSCH transmission in an SDM or SFN scheme, or multiple DCI-triggered PUSCH transmissions in the same time domain. The second condition includes having a purpose set to " beamManagement Configuration of a UE with multiple SRS resource groups (beam management). At a given time instance, one SRS resource from each of the multiple SRS resource groups can be transmitted, and one or more SRS resources with one port can be configured in each of the multiple SRS resource groups. A third condition includes the configuration of a UE with multiple (n, where n>1) SRS resource groups for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource group can be configured with settings set to " codebook "or" nonCodebookThe purpose of "". The number of transmit antenna ports of the PUSCH associated with an SRS resource group can be up to x, which depends on the UE capability report. The value of x can be 1, 2 or 4.

[0091] In some configurations, the UE can transmit on more than one SRS resource occupying the same (one or more) symbols and / or RBs for beam management. Each SRS resource can be configured in a different SRS resource group. The UE can be configured with m uses set to " beamManagement An SRS resource group. Each SRS resource group can be configured with the same high-level parameters. resourceType The value can be set to at least one of "periodic", "semi-persistent", or "aperiodic". A 1-port SRS resource can be configured in each of multiple SRS resource groups, and each SRS resource group can be configured with a unique identifier. This identifier can be at least one of panel ID, group ID, or group ID. The maximum value of the identifier is equal to the value of n (n is a positive integer), which corresponds to the number of configured SRS resource groups for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource is associated with a different identifier that can be configured for the SRS resource group. One or more SRS ports of each SRS resource in a given set are associated with one or more different UE antenna ports. The UE antenna ports can be used for PUSCH transmissions associated with the SRS resource group. Power control parameters can include at least one of alpha, p0, pathlossReferenceRS, or srs-PowerControlAdjustmentStates. The beam state of each SRS resource can be different / independent. The beam state can be configured by spatialRelationInfo or srs-TCI-State.

[0092] Current reference Figure 7 A flowchart of method 7000 for transmitting over multiple (e.g., multiple) sounding reference signal (SRS) resources in multiple transmit / receive point (TRP) operation is shown. Method 700 can be combined with Figures 1 to 6This method can be implemented using any of the components and devices detailed herein. In general, method 7000 may include determining / configuring whether a condition reported by a wireless communication device (e.g., a UE) supporting simultaneous transmission of multiple Physical Uplink Shared Channel (PUSCH) transmissions is met / satisfied (7002). If the condition is met, the method may include transmitting / transmitting simultaneous PUSCH transmissions to a wireless communication node (e.g., a base station, via multiple TRPs) on multiple SRS resources (7004). The method may also include, for example, receiving simultaneous PUSCH transmissions on multiple SRS resources by the wireless communication node from the wireless communication device (e.g., via multiple TRPs) (7006).

[0093] At operation (7002), in some arrangements, the wireless communication device (e.g., UE) may determine that at least one condition is met, which includes the wireless communication device supporting (or being able to) simultaneous multiple Physical Uplink Shared Channel (PUSCH) transmissions, and / or reporting support for simultaneous multiple PUSCH transmissions. In response to the satisfaction of at least one condition, the wireless communication device may simultaneously transmit on multiple Sounding Reference Signal (SRS) resources occupying one or more resources in the same group (e.g., one or more resources in the same group in the time domain). In some configurations, the one or more resources in the same group may include at least one resource block (RB) or symbol. In some configurations, the wireless communication device may determine that the satisfaction of at least one condition may include the wireless communication device configuring multiple groups of SRS resources for codebook-based or non-codebook-based PUSCH transmissions.

[0094] In some configurations, wireless communication devices can be configured with multiple sets of SRS resources for codebook-based PUSCH transmission. As detailed herein, simultaneous transmission of SRS for codebook-based PUSCH can be enabled if at least one of a certain condition is met. The first condition may include a report of UE capabilities (to the wireless communication node) indicating support for multiple simultaneous PUSCH transmissions. This capability may be triggered by a single DCI of a PUSCH transmission transmitted using an SDM or SFN scheme. This condition may involve multiple DCI triggering, allowing / enabling more than one PUSCH transmission in the same time domain. Once the UE recognizes that at least one condition is met, the UE can respond by transmitting simultaneously on multiple SRS resources. These SRS resources may occupy one or more specific resources in the same set to ensure coordinated / simultaneous multiple SRS / PUSCH transmissions. The second condition may include a UE configuration with multiple SRS resource groups dedicated to codebook-based PUSCH transmission. These SRS resource groups can be configured within specified parameters, such as... srs-ResourceSetToAddModList or srs- ResourceSetToAddModListDCI-0-2 Each SRS resource group can be configured / provided with settings that are set to " codebook The purpose of this condition is to configure the correlation between each SRS resource group and codebook-based PUSCH transmissions. The UE can verify that this condition is met by confirming the existence of multiple SRS resource groups configured for codebook-based PUSCH transmissions. A third condition for codebook-based uplink transmissions may involve the maximum number of SRS resources that can be configured for each SRS resource group. This maximum number can be configured to be at least one of 1, 2, or 4. A fourth condition may include the configuration of the number of SRS(one or more) SRS ports for each individual SRS resource. The ability to set the number of SRS(one or more) SRS ports to values ​​such as 1, 2, 4, or 8 can enhance adaptability, for example, by supporting multiple simultaneous transmissions.

[0095] In some configurations, a wireless communication device can be configured with multiple sets of SRS resources for codebook-based PUSCH transmission. When the wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial domain modulation (SDM) scheme, each SRS resource can be configured with up to two ports (e.g., two SRS ports or two antenna ports). Similarly, when the wireless communication device supports simultaneous multiple PUSCH transmissions in a single-frequency network (SFN) scheme, each SRS resource can be configured with up to two or four ports. The maximum number of SRS resources on which the wireless communication device can transmit simultaneously depends on the reporting capability of the wireless communication device.

[0096] In some configurations, wireless communication devices can be configured with multiple sets of SRS resources for non-codebook-based PUSCH transmissions. As detailed herein, simultaneous SRS transmissions can be enabled for non-codebook-based PUSCH if at least one of certain conditions is met. The first condition may include a report / presence of a UE capability indicating support for simultaneous PUSCH transmissions. This capability may involve a single DCI-triggered PUSCH transmission in an SDM or SFN scheme, or multiple DCI-triggered PUSCH transmissions of more than one in the same time domain. The second condition may include a UE configuration with multiple SRS resource groups dedicated to non-codebook-based PUSCH transmissions. These SRS resource groups can be configured / provided within specified parameters, such as... srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0- 2 Each SRS resource group can be configured with a setting to " nonCodebook The purpose of this condition is to configure the correlation between each SRS resource group and non-codebook-based PUSCH transmissions. The UE can verify that this condition is met by confirming the existence of multiple SRS resource groups configured for non-codebook-based PUSCH transmissions. A third condition for non-codebook-based uplink transmissions may involve the maximum number of SRS resources that can be configured for each SRS resource group. This maximum number can be configured to be at least one of 1, 2, 3, or 4. The maximum number of SRS resources that can be transmitted simultaneously depends on the UE's capabilities. UE capabilities can be determined via parameters. maxNumberSRS-ResourceTx The fourth condition may include the configuration of an SRS port for each individual SRS resource.

[0097] In some configurations, a wireless communication device can be configured with multiple sets of SRS resources for non-codebook-based PUSCH transmission. The maximum number of SRS resources on which the wireless communication device can transmit simultaneously is less than / less than the total number of SRS resources configured in the multiple sets of SRS resources. This maximum number is determined by the maximum number of transport layers for the multiple simultaneously transmitted PUSCHs associated with the multiple sets of SRS resources. When the wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial division multiplexing (SDM) scheme, the wireless communication device can transmit / use up to 4 SRS resources simultaneously. Similarly, when the wireless communication device supports simultaneous multiple PUSCH transmissions in a single-frequency network (SFN) scheme, the wireless communication device can transmit / use up to 2 or 4 SRS resources simultaneously. The maximum number of SRS resources on which the wireless communication device can transmit simultaneously is determined by the capabilities reported by the wireless communication device.

[0098] In some configurations, a wireless communication device can be configured with multiple sets of SRS resources for non-codebook-based PUSCH transmission. The maximum number of SRS resources that a wireless communication device can transmit simultaneously from one SRS resource set is less than or equal to the total number of SRS resources configured across the multiple SRS resource sets. The maximum number of SRS resources that a wireless communication device can transmit simultaneously from one SRS resource set is determined by the maximum number of transport layers for the PUSCH associated with one of the multiple SRS resource sets. When a wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial division multiplexing (SDM) scheme, it can transmit up to two SRS resources from an SRS resource set simultaneously. Similarly, when a wireless communication device supports simultaneous multiple PUSCH transmissions in a single-frequency network (SFN) scheme, it can transmit up to two or four SRS resources from an SRS resource set simultaneously. The maximum number of SRS resources that a wireless communication device can transmit simultaneously from that SRS resource set depends on the reporting capability of the wireless communication device.

[0099] In some configurations, the wireless communication device may determine that at least one condition is met, which may include: when the number of receive antenna ports equals the number of transmit antenna ports (which is x, for example, a positive integer value), the wireless communication device reports support for SRS antenna switching. The number of transmit antenna ports for a PUSCH associated with one of the multiple SRS resources is at most x, and the number of transmit antenna ports for the PUSCH depends on the capabilities reported by the wireless communication device. The number of multiple SRS resources used for codebook-based or non-codebook-based PUSCH transmissions can be at most the value "n" (where n > 1 and is an integer value), which is configured for the wireless communication device. The number of antenna ports for each SRS resource can be set to at most x. The antenna ports of each SRS resource in a given set of multiple SRS resources are associated with different antenna ports of the wireless communication device. The different antenna ports of the wireless communication device for an SRS resource are used for PUSCH transmissions associated with one of the multiple SRS resources for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource can be configured within different SRS resource groups from multiple SRS resource groups. Each SRS resource group can be configured with " antennaSwitching The purpose of "(antenna switching)" is as follows. The number of multiple SRS resource groups can be at most "m" (e.g., a positive integer value), which is configured for the wireless communication device, and the value of m is equal to the value of n, which corresponds to the number of SRS resource groups configured for codebook-based or non-codebook-based PUSCH transmission. Each SRS resource group can be configured with the same higher-layer parameters. resourceType The value of (resource type) is set to at least one of the following: periodic, semi-permanent, or aperiodic. The power control parameters for each group of SRS resources can be configured with different or independent values, or the beam state of each SRS resource can be different from the beam state of another SRS resource, or the beam state of each SRS resource can be independent of the beam state of another SRS resource.

[0100] In some configurations, the wireless communication device can determine that at least one condition is met, which may include: when the number of receive antenna ports is greater than the number of transmit antenna ports (i.e., x), the wireless communication device reports support for SRS antenna switching. The number of transmit antenna ports for a PUSCH associated with one of the multiple SRS resources is at most x, and the number of transmit antenna ports for the PUSCH depends on the capabilities reported by the wireless communication device. The number of multiple SRS resources used for codebook-based or non-codebook-based PUSCH transmissions can be at most “n” (where n>1), which is configured for the wireless communication device. The number of antenna ports for each SRS resource can be set to at most x. The SRS ports of each SRS resource in a given set of multiple SRS resources are associated with different antenna ports of the wireless communication device. Different antenna ports of the wireless communication device for an SRS resource are used for PUSCH transmissions associated with one of the multiple SRS resources for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource can be configured in different SRS resource groups within the multiple SRS resources. Each group of SRS resources can be configured with " antennaSwitching The purpose of "(antenna switching)" is as follows. The number of multiple SRS resource groups can be up to "m", which is configured for the wireless communication device, and the value of m is equal to the value of n, which corresponds to the number of SRS resource groups configured for codebook-based or non-codebook-based PUSCH transmission. Each SRS resource group can be configured with the same higher-layer parameters. resourceType The value of (resource type) is set to at least one of the following: periodic, semi-permanent, or aperiodic. The power control parameters for each group of SRS resources can be configured with different or independent values, or the beam state of each SRS resource can be different from the beam state of another SRS resource, or the beam state of each SRS resource can be independent of the beam state of another SRS resource.

[0101] In some implementations, the wireless communication device may determine that at least one condition is met, which may include: the wireless communication device is configured with multiple sets of devices whose purpose is set to " beamManagement (Beam Management) SRS resources. Each SRS resource can be configured in different SRS resource groups of multiple SRS resources, and each SRS resource group can be configured with the same high-level parameters. resourceType The value is set to at least one of the following: periodic, semi-persistent, or aperiodic. Each group of SRS resources can be configured with one or more SRS resources with one port (or a single port, 1-port), and each group of SRS resources can be configured with an identifier. The identifier can include at least one of panel identifier ID, group ID, or group ID. The maximum value of the identifier is equal to the value n (where n is a positive integer) corresponding to the number of SRS resource groups configured for codebook-based or non-codebook-based PUSCH transmissions. Each SRS resource can be associated with a different identifier configured for one group of SRS resources among multiple groups of SRS resources. The SRS port of each SRS resource in a given group of SRS resources among multiple groups of SRS resources is associated with a different antenna port of the wireless communication device. The power control parameters of each group of SRS resources can be configured with different or independent values, or the beam state of each SRS resource can be different from the beam state of another SRS resource, or the beam state of each SRS resource can be independent of the beam state of another SRS resource.

[0102] In some configurations, a wireless communication node (e.g., a base station) can receive multiple simultaneous transmissions from a wireless communication device on multiple SRS resources occupying one or more resources in the same group. These simultaneous multiple transmissions can occur in response to at least one condition being met, including: the wireless communication device reporting support for simultaneous multiple PUSCH transmissions.

[0103] While various embodiments of the present solution have been described above, it should be understood that these embodiments are presented by way of example only and not as limitations. Similarly, various diagrams may depict exemplary architectures or configurations provided to enable those skilled in the art to understand exemplary features and functionality of the present solution. However, those skilled in the art will understand that the solution is not limited to the illustrated exemplary architectures or configurations, but can be implemented using various alternative architectures and configurations. Furthermore, as those skilled in the art will understand, one or more features of one embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of this disclosure should not be limited to any of the illustrative embodiments described above.

[0104] It should also be understood that any reference to elements using names such as "first," "second," etc., in this document generally does not restrict the number or order of these elements. Rather, these names may be used herein as a convenient means of distinguishing between two or more elements or instances of elements. Therefore, references to the first and second elements do not imply that only two elements can be used or that the first element must precede the second element in some way.

[0105] Furthermore, those skilled in the art will understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols referenced in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0106] Those skilled in the art will further understand that any of the various illustrative logic blocks, modules, processors, means, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of both), firmware, various forms of program or design code in conjunction with instructions (which may be referred to herein as "software" or "software module"), or any combination of these technologies. To clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these technologies, depends on the specific application and the design constraints imposed on the system as a whole. Those skilled in the art can implement the described functionality in various ways for each specific application, but such implementation will not depart from the scope of this disclosure.

[0107] Furthermore, those skilled in the art will understand that the various illustrative logic blocks, modules, devices, components, and circuits described herein can be implemented within or executed by an integrated circuit (IC), which may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, or any combination thereof. Logic blocks, modules, and circuits may also include antennas and / or transceivers for communicating with various components within a network or device. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, such as a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration that performs the functions described herein.

[0108] If these functions are implemented in software, they can be stored as one or more instructions or code on a computer-readable medium. Therefore, the steps of the methods or algorithms disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media include computer storage media and communication media, with communication media including any medium that enables the transfer of computer programs or code from one location to another. Storage media can be any available medium that is accessible to a computer. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the required program code in the form of instructions or data structures and that is accessible to a computer.

[0109] In this document, the term "module" as used herein refers to software, firmware, hardware, and any combination of such elements for performing the associated functions described herein. Furthermore, for purposes of discussion, various modules are described as separate modules; however, as will be apparent to those skilled in the art, two or more modules may be combined to form a single module that performs the associated functions according to embodiments of this solution.

[0110] Furthermore, memory or other storage devices and communication components may be used in embodiments of this solution. It should be understood that, for clarity, the above description refers to embodiments of this solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality among different functional units, processing logic elements, or domains can be used without diminishing the effectiveness of this solution. For example, functions shown to be performed by a separate processing logic element or controller may be performed by the same processing logic element or controller. Therefore, references to specific functional units are merely references to suitable means for providing the described functionality and do not indicate a strict logical or physical structure or organization.

[0111] Various modifications to the embodiments described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the embodiments shown herein, but is given the broadest scope consistent with the novel features and principles disclosed herein as set forth in the following claims.

Claims

1. A method comprising: determining, by a wireless communication device, that at least one condition is satisfied, the at least one condition being satisfied comprising: the wireless communication device reporting support for simultaneous multiple physical uplink shared channel, PUSCH, transmissions; and transmitting, by the wireless communication device, simultaneously on multiple sounding reference signal, SRS, resources that occupy one or more resources of a same group in response to the at least one condition being satisfied.

2. The method of claim 1, comprising: determining, by the wireless communication device, that the at least one condition is satisfied, the at least one condition being satisfied further comprising: the wireless communication device being configured with multiple groups of SRS resources for codebook or non-codebook based PUSCH transmissions.

3. The method of claim 1, wherein, the one or more resources of the same group comprising at least one of: at least one resource block, RB, or at least one symbol.

4. The method of claim 2, wherein, At least one of: the wireless communication device being configured with multiple groups of SRS resources for codebook based PUSCH transmissions; the wireless communication device transmitting simultaneously on only one SRS resource in each group from the multiple groups of SRS resources; or a maximum number of SRS resources on which the wireless communication device can transmit simultaneously depends on a capability reported by the wireless communication device.

5. The method of claim 2, wherein, At least one of: the wireless communication device being configured with multiple groups of SRS resources for codebook based PUSCH transmissions; at most 2 ports being configured for each SRS resource when the wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial domain modulation, SDM, scheme; at most 2 or 4 ports being configured for each SRS resource when the wireless communication device supports simultaneous multiple PUSCH transmissions in a single frequency network, SFN, scheme; or a maximum number of SRS resources on which the wireless communication device can transmit simultaneously depends on a capability reported by the wireless communication device.

6. The method of claim 2, wherein, At least one of: the wireless communication device being configured with multiple groups of SRS resources for non-codebook based PUSCH transmissions; the wireless communication device being capable of transmitting simultaneously on all SRS resources from the multiple groups of SRS resources; or a maximum number of SRS resources on which the wireless communication device can transmit simultaneously depends on a capability reported by the wireless communication device.

7. The method of claim 2, wherein, At least one of: the wireless communication device being configured with multiple groups of SRS resources for non-codebook based PUSCH transmissions; a maximum number of SRS resources on which the wireless communication device can transmit simultaneously is less than a total number of SRS resources configured in the multiple groups of SRS resources; the maximum number of SRS resources on which the wireless communication device can transmit simultaneously is determined by a maximum number of transmission layers of multiple simultaneous PUSCHs associated with the multiple groups of SRS resources; at most 4 SRS resources can be transmitted simultaneously by the wireless communication device when the wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial domain modulation, SDM, scheme; At most 2 or 4 SRS resources from the SRS resource group can be simultaneously transmitted by the wireless communication device when the wireless communication device supports simultaneous multiple PUSCH transmissions in a single frequency network (SFN) scheme; or The maximum number of SRS resources on which the wireless communication device can simultaneously transmit depends on the capability reported by the wireless communication device.

8. The method of claim 2, wherein, At least one of the following conditions is true: The wireless communication device is configured with multiple groups of SRS resources for non-codebook-based PUSCH transmissions; The maximum number of SRS resources from one group of SRS resources on which the wireless communication device can simultaneously transmit is less than the total number of SRS resources configured in the multiple groups of SRS resources; The maximum number of SRS resources from the SRS resource group on which the wireless communication device can simultaneously transmit is determined by the maximum number of transmission layers of PUSCH associated with one group of SRS resources in the multiple groups of SRS resources; At most 2 SRS resources from the SRS resource group can be simultaneously transmitted by the wireless communication device when the wireless communication device supports simultaneous multiple PUSCH transmissions in a spatial domain modulation (SDM) scheme; At most 2 or 4 SRS resources from the SRS resource group can be simultaneously transmitted by the wireless communication device when the wireless communication device supports simultaneous multiple PUSCH transmissions in a single frequency network (SFN) scheme; or The maximum number of SRS resources from the SRS resource group on which the wireless communication device can simultaneously transmit depends on the capability reported by the wireless communication device.

9. The method of claim 2, wherein, At least one of the following conditions is true: The at least one condition is also met when the number of receive antenna ports is equal to the number of transmit antenna ports, where the number is x, the wireless communication device reports support for SRS antenna switching; The number of transmit antenna ports of PUSCH associated with one group of SRS resources in the multiple groups of SRS resources is at most x, and the number of transmit antenna ports of the PUSCH depends on the capability reported by the wireless communication device; The number of the multiple groups of SRS resources for codebook-based or non-codebook-based PUSCH transmissions is at most a number n, the number n is configured for the wireless communication device; The number of antenna ports of each SRS resource is at most set to x; The antenna ports of each SRS resource in a given group of SRS resources in the multiple groups of SRS resources are associated with different antenna ports of the wireless communication device; The different antenna ports of the wireless communication device of one SRS resource are used for PUSCH for codebook-based or non-codebook-based PUSCH transmissions associated with one group of SRS resources in the multiple groups of SRS resources; Each SRS resource is configured in a different SRS resource group of the multiple groups of SRS resources; Each SRS resource is configured with antenna switching antennaSwitching for use; The number of the multiple groups of SRS resources is at most a number m, the number m is configured for the wireless communication device; The value of m is equal to the value of n; Each SRS resource is configured with a same higher layer parameter resource type resourceType a value set to periodic, semi-persistent, or aperiodic; The power control parameter of each group of SRS resources is configured with different or independent values; or The beam state of each SRS resource is different from or independent of the beam state of another SRS resource.

10. The method of claim 2, wherein, At least one of the following conditions exists: Satisfying the at least one condition further includes: when the number of receive antenna ports is greater than the number of transmit antenna ports, wherein the number is x, the wireless communication device reports support for SRS antenna switching; The number of transmit antenna ports of a PUSCH associated with a group of SRS resources in the multiple groups of SRS resources is at most x, and the number of transmit antenna ports of the PUSCH depends on the capability reported by the wireless communication device; The number of the multiple groups of SRS resources for codebook-based or non-codebook-based PUSCH transmission is at most a number n, and the number n is configured for the wireless communication device; The number of antenna ports of each SRS resource is at most set to x; The SRS ports of each SRS resource in a given group of SRS resources in the multiple groups of SRS resources are associated with different antenna ports of the wireless communication device; Different antenna ports of the wireless communication device of one SRS resource are used for a PUSCH for codebook-based or non-codebook-based PUSCH transmission associated with a group of SRS resources in the multiple groups of SRS resources; Each SRS resource is configured in a different SRS resource group of the multiple groups of SRS resources; Each SRS resource is configured with antenna switching antennaSwitching for use; The number of the multiple groups of SRS resources is at most a number m, and the number m is configured for the wireless communication device; The value of m is equal to the value of n; Each SRS resource is configured with a same higher layer parameter resource type resourceType a value set to periodic, semi-persistent, or aperiodic; The power control parameter of each group of SRS resources is configured with different or independent values; or The beam state of each SRS resource is different from or independent of the beam state of another SRS resource.

11. The method of claim 2, wherein, At least one of the following conditions exists: Satisfying the at least one condition further comprises that the wireless communication device is configured with multiple sets of SRS resources with a use set to beam management beamManagement ​ Each SRS resource is configured in a different SRS resource group of the multiple groups of SRS resources; Each SRS resource is configured with a same higher layer parameter resourceType resourceType a value set to periodic, semi-persistent, or aperiodic; Each group of SRS resources is configured with one or more SRS resources of 1 port; Each group of SRS resources is configured with an identifier; The identifier includes at least one of the following: a panel identifier ID, a group ID, or a group ID; Each SRS resource is associated with a different identifier configured for a group of SRS resources in the multiple groups of SRS resources; The maximum value of the identifier is equal to the value n corresponding to the number of SRS resource groups configured for codebook-based or non-codebook-based PUSCH transmission, wherein n is a positive integer value; The SRS ports of each SRS resource in a given group of SRS resources in the multiple groups of SRS resources are associated with different antenna ports of the wireless communication device; The power control parameter of each group of SRS resources is configured with different or independent values; or The beam state of each SRS resource is different from the beam state of another SRS resource, or the beam state of each SRS resource is independent of the beam state of another SRS resource.

12. A method comprising: receiving, by a wireless communication node, simultaneous multiple transmissions from a wireless communication device on multiple sounding reference signal, SRS, resources occupying one or more resources of a same group, wherein the simultaneous multiple transmissions are made in response to at least one condition being met, the at least one condition being met including the wireless communication device reporting support for simultaneous multiple physical uplink shared channel, PUSCH, transmissions.

13. A non-transitory computer-readable medium storing instructions that, when executed by at least one processor, cause the at least one processor to perform the method of any of claims 1-12.

14. An apparatus comprising: at least one processor configured to implement a method according to any of claims 1-12.

15. A computer program product comprising a computer-readable medium bearing computer program code embodied therewith, the computer program code comprising instructions for causing a computer to perform the method of any of claims 1-12.

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