Sounding reference signal (SRS)-based beam pair selection for multi-panel simultaneous uplink transmission (STxMP)

Abstract

The disclosure relates to sounding reference signal (SRS)-based beam pair selection for multi-panel simultaneous uplink transmission (STxMP). A user equipment (UE) and network node may support sounding reference signal (SRS)-based antenna beam pair selection for multi-panel simultaneous uplink transmissions by the UE. One or more antenna beam pairs of a UE having a first antenna panel and a second antenna panel may be used to simultaneously transmit SRS to a first transmit receive point (TRP) and a second TRP using SRS resources configured by one or more SRS configuration sets from the network node. The UE may configure SRS spatial filters for SRS resources to indicate a direction of an antenna beam, while some of the SRS resources are configured by the one or more SRS configuration sets received from the network node. The network node may select an antenna beam pair among the one or more antenna beam pairs based on an indication of the signal strength of the received SRS.

Description

[0001] Related Applications

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 531,482, filed on August 8, 2023, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The described aspects generally relate to beam pair selection based on sounding reference signals (SRS). Background Art

[0004] User equipment (UE) communicates with a base station (such as an evolved Node B (eNB), a next-generation Node B (gNB), a transmission reception point (TRP), a network node, or other base station) in a wireless communication network or system. The wireless communication system may include a fifth generation (5G) system, a new radio (NR) system, a long term evolution (LTE) system, a combination thereof, or some other wireless system. In addition, the wireless communication system may support a wide range of use cases, such as enhanced mobile broadband (eMBB), massive machine type communications (mMTC), ultra-reliable and low latency communications (URLLC), and enhanced vehicle-to-everything communications (eV2X). There are challenges in various technologies such as NR wireless systems. Summary of the invention

[0005] Some aspects of the present disclosure relate to apparatus and methods for implementing a technique for selecting a sounding reference signal (SRS) based antenna beam pair for a user equipment (UE) or a network node to support multi-panel simultaneous uplink transmission (STxMP) by the UE. One or more antenna beam pairs of a UE having a first antenna panel and a second antenna panel may be used to simultaneously transmit SRS to a first transmission reception point (TRP) and a second TRP using SRS resources configured by one or more SRS configuration sets from the network node. However, an SRS spatial filter of an SRS resource indicating a direction of an antenna beam for transmitting the SRS may be configured by the UE, while some or remaining components of the SRS resource may be configured by one or more SRS configuration sets received from the network node. The network node may select an antenna beam pair for further data transmission between the UE and two TRPs, wherein the selected antenna beam pair is selected from the one or more antenna beam pairs based on an indication of a measured signal strength of the SRS transmitted by the one or more antenna beam pairs. The implemented technology can be applicable to many wireless systems, such as wireless communication systems based on 3rd Generation Partnership Project (3GPP) Release 15 (Rel-15), Release 16 (Rel-16), Release 17 (Rel-17), Release 18 (Rel-18), etc.

[0006] Some aspects of the present disclosure relate to a UE. The UE may include a transceiver and a processor communicatively coupled to the transceiver. The transceiver may be coupled to a first antenna panel and a second antenna panel, which are configured to implement wireless communications with two TRPs and a network node in a wireless communication system. The processor may receive one or more SRS configuration sets from the network node, wherein the one or more SRS configuration sets include configurations of SRS resources for one or more antenna beam pairs. The antenna beam pair may include a first beam of a first antenna panel of the UE and a second beam of a second antenna panel.

[0007] In some embodiments, the processor may select the direction of an antenna beam in one or more antenna beam pairs of the UE. The configuration for the SRS resource may include a first SRS resource and a second SRS resource for the first beam and the second beam, respectively. The processor may configure a first SRS spatial filter for the first SRS resource to determine a first direction of the first beam, and configure a second SRS spatial filter for the second SRS resource to determine a second direction of the second beam.

[0008] In some embodiments, one or more SRS configuration sets may include one or more parameters including an SRS-ResourceSet, and the SRS spatial filter may be associated with the parameter spatialRelationInfo included in the SRS-ResourceSet. In some embodiments, the UE may receive an SRS-ResourceSet with a parameter spatialRelationInfo that is not configured by the network node, and the UE may determine the beam direction of its SRS transmission by selecting a spatial filter for the parameter spatialRelationInfo. In some other embodiments, the UE may change the parameter spatialRelationInfo from a first value to a second value to configure the SRS spatial filter. In some embodiments, a first SRS spatial filter for a first SRS resource or a second SRS spatial filter for a second SRS resource may be associated with a parameter included in one or more SRS configuration sets. The UE may add a parameter or change a parameter from a first value to a second value to configure a first SRS spatial filter. In some embodiments, SRS resources for one or more antenna beam pairs may be included in an SRS configuration set determined by a network node.

[0009] In some embodiments, the processor may determine a first SRS resource for a first beam from a first set of SRS resources configured by an SRS configuration set received from a network node, and determine a second SRS resource for a second beam from a second set of SRS resources configured by the same SRS configuration set, wherein the first set of SRS resources is different from the second set of SRS resources. In some embodiments, the processor may determine a first SRS resource for a first beam configured by a first SRS configuration set received from a network node, and determine a second SRS resource for a second beam configured by a second SRS configuration set received from a network node, wherein the first SRS configuration set is different from the second SRS configuration set. In addition, the first SRS configuration set and the second SRS configuration set may be configured for the same uplink transmission purpose.

[0010] In some embodiments, the processor may simultaneously transmit a first SRS to a first TRP using a first beam in a first direction through a first SRS resource, and transmit a second SRS to a second TRP using a second beam in a second direction through a second SRS resource. In addition, the processor may transmit SRS to the first TRP and the second TRP respectively through one or more antenna beam pairs.

[0011] In some embodiments, the processor may receive an indication of a selected antenna beam pair from a network node, wherein the selected antenna beam pair may be selected by the network node based on a measured signal strength represented by a reference signal received power (RSRP) or a signal to interference plus noise ratio (SINR) of an SRS transmitted by one or more antenna beam pairs. Thereafter, the processor may transmit data to the first TRP and the second TRP simultaneously via a physical uplink shared channel (PUSCH) using the selected antenna beam pair.

[0012] In some embodiments, the processor may determine an updated antenna beam pair to replace the selected antenna beam pair for transmitting data to the first TRP and the second TRP simultaneously via the PUSCH by the updated antenna beam pair. In some embodiments, the processor may receive a message from a network node to instruct the UE to determine an updated antenna beam pair, wherein the message is received after a timer maintained by the network node expires. In some embodiments, the processor may initiate a beam pair update process by sending an update message to the network node, wherein the update message includes uplink control information (UCI) or a medium access control (MAC) control element (MAC-CE) message.

[0013] Some aspects of the present disclosure relate to a network node. The network node may include a transceiver and a processor communicatively coupled to the transceiver. The transceiver may be configured to implement wireless communication with two TRPs and a UE in a wireless communication system, wherein the UE has a transceiver coupled to a first antenna panel and a second antenna panel. The processor may generate a plurality of SRS configuration sets, the plurality of SRS configuration sets including configurations of SRS resources for one or more antenna beam pairs, wherein the antenna beam pair includes a first beam of a first antenna panel and a second beam of a second antenna panel of the UE. The configuration of SRS resources for one or more antenna beam pairs may include a first configuration of a first SRS resource for a first beam without configuring a first SRS spatial filter for a first SRS resource indicating a first direction of the first beam, and a second configuration of a second SRS resource for a second beam without configuring a second SRS spatial filter for a second SRS resource indicating a second direction of the second beam.

[0014] In some embodiments, the processor may transmit multiple SRS configuration sets to the UE, and receive an indication of the measured signal strength of the SRS transmitted by one or more antenna beam pairs received by the first TRP and the second TRP. The indication of the measured signal strength of the SRS may include a first signal strength indication for the first SRS received by the first TRP transmitted through the first SRS resource using the first beam in the first direction determined by the first SRS spatial filter configured by the UE, and a second signal strength indication for the second SRS received by the second TRP transmitted through the second SRS resource using the second beam in the second direction determined by the second SRS spatial filter configured by the UE. The first SRS and the second SRS are transmitted simultaneously to the first TRP and the second TRP, respectively.

[0015] In some embodiments, the processor may select an antenna beam pair from among the one or more antenna beam pairs based on an indication of measured SRS signal strength, where the first signal strength indication or the second signal strength indication may be represented by RSRP or SINR.

[0016] In some embodiments, to determine the selected antenna beam pair, the processor may determine whether the first signal strength indication or the second signal strength indication is greater than a first predetermined threshold of the measured signal strength, determine whether the difference between the first signal strength indication and the second signal strength indication is less than a second predetermined threshold, and further determine the selected antenna beam pair from one or more antenna beam pairs based on the ordering of the indications of the measured signal strength of the SRS for the one or more antenna beam pairs.

[0017] In some embodiments, the processor may determine an updated antenna beam pair to replace the selected antenna beam pair for transmitting data to the first TRP and the second TRP simultaneously via the PUSCH by the updated antenna beam pair.

[0018] The present invention is provided for the purpose of illustrating some aspects only, so as to provide an understanding of the subject matter described herein. Therefore, the above-mentioned features are only examples and should not be understood as narrowing the scope or essence of the subject matter in the present disclosure. Other features, aspects and advantages of the present disclosure will become apparent from the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 An example wireless system supporting sounding reference signal (SRS) based beam pair selection for multi-panel simultaneous uplink transmission (STxMP) according to some aspects of the present disclosure is illustrated.

[0021] FIG. 2A to FIG. 2B A block diagram illustrating a UE and a network node implementing SRS-based beam pair selection for STxMP according to some aspects of the present disclosure is illustrated.

[0022] FIG. 3A to FIG. 3B Example procedures performed by a UE and a network node to support SRS-based beam pair selection for STxMP according to some aspects of the present disclosure are illustrated.

[0023] Figure 4 is an exemplary computer system for implementing some aspects or portions of the disclosure provided herein.

[0024] The present disclosure is described with reference to the accompanying drawings. In the drawings, generally, the same reference numerals indicate the same or functionally similar elements. In addition, generally, the leftmost digit of a reference numeral identifies the drawing in which the reference numeral first appears. DETAILED DESCRIPTION

[0025] In wireless systems, multiple-input multiple-output (MIMO) transmission is an important technology. A user equipment (UE) or a base station may include an antenna array or system having multiple antenna panels coupled to an antenna port, wherein the antenna panel may include an array of antenna elements that may be located in physical locations close to each other. In some examples, the antenna may be a smart antenna system in which all antenna elements are considered to be pseudo-omnidirectional antenna elements or quasi-sector omnidirectional antenna elements including phase shifters. Antenna beams (such as transmission (Tx) beams or reception (Rx) beams) may be directional beams formed by adjusting phase shifters of multiple antenna elements. For the description herein, antenna beams may also be referred to as beams.

[0026] In some embodiments, at one time, among multiple antenna panels, the UE may activate only one antenna panel and use it for uplink transmission. In order to improve reliability and robustness, uplink multi-panel transmission enhancements for multi-beam operation may be developed. In some embodiments, multiple antenna panels on the UE may be activated at the same time and used for simultaneous transmission to multiple transmission reception points (TRPs) or base stations, resulting in multi-panel simultaneous transmission (STxMP). In some embodiments, in order to enable simultaneous transmission by multiple panels in the uplink, the UE may select a beam from each antenna panel. For a UE having two antenna panels to perform simultaneous transmission to two different TRPs, two beams selected from the two panels to communicate with two TRPs or base stations for simultaneous transmission may form an antenna beam pair. The UE may have multiple antenna beam pairs that can be used to perform STxMP, so a mechanism may be used to select an antenna beam pair from one or more antenna beam pairs that can be used to improve performance.

[0027] Embodiments herein may present techniques for beam pair selection by a UE from one or more available antenna beam pairs based on a sounding reference signal (SRS) for STxMP. SRS may be transmitted by a UE on an uplink to allow the network to estimate the quality of a channel. SRS resources may occupy specific locations in a resource grid in the time and frequency domains to transmit SRS. A UE may be configured with one or more SRS resources via a higher layer parameter SRS-ResourceSet, which may be included in a radio resource control (RRC) message. Tx beams for uplink channels such as SRS, physical uplink control channel (PUCCH), and physical uplink shared channel (PUSCH) may be indicated by a SpatialRelationInfo parameter or a parameter associated with an SRS spatial filter for the UE.

[0028] The embodiments herein present techniques for a UE to report uplink beam pairs for STxMP from the UE. One or more antenna beam pairs of a UE having a first antenna panel and a second antenna panel may be used to transmit SRS to a first TRP and a second TRP simultaneously using SRS resources configured by one or more SRS configuration sets from a network node. However, the UE configures an SRS spatial filter for the SRS resources to determine the direction of the antenna beam for transmitting the corresponding SRS, while some or remaining components of the SRS resources are configured by one or more SRS configuration sets received from the network node. The network node may select an antenna beam pair for further data transmission between the UE and the two TRPs, wherein the selected antenna beam pair is selected from the one or more antenna beam pairs based on an indication of a measured signal strength of the SRS transmitted by the one or more antenna beam pairs.

[0029] Figure 1 An exemplary wireless system 100 that supports sounding reference signal (SRS) based beam pair selection for STxMP according to some aspects of the present disclosure is illustrated. The wireless system 100 is provided for illustration purposes only and is not intended to limit the disclosed aspects. Figure 1 As shown, system 100 may include, but is not limited to, network node 101, TRP 103, TRP 105, all of which communicate with UE 102. System 100 may also include additional components not shown.

[0030] In some examples, the wireless system 100 may be an NR system, an LTE system, a 5G system, or some other wireless system. In addition, the wireless system 100 may support a wide range of use cases, such as enhanced mobile broadband (eMBB), massive machine type communications (mMTC), ultra-reliable and low latency communications (URLLC), and enhanced vehicle-to-everything communications (eV2X).

[0031] According to some aspects, the network node 101, TRP 103 or TRP 105 may be operated together as a network node controlled by the network node 101 and configured to operate based on various wireless communication technologies (such as but not limited to technologies based on the 3rd Generation Partnership Project (3GPP) standard). For example, the network node 101, TRP 103 or TRP 105 may be operated together as a node configured to operate using Rel-16, Rel-17 or others. The network node 101, TRP 103 or TRP 105 may be a fixed station in combination or individually, and may also be referred to as a base transceiver system (BTS), an access point (AP), an evolved Node B (eNB), a next generation Node B (gNB), or some other equivalent term. The system 100 may operate using a licensed cellular spectrum (referred to as in-band communication) and an unlicensed spectrum (referred to as out-of-band communication).

[0032] According to some aspects, network node 101, TRP 103 or TRP 105 can provide wireless coverage of cells of various sizes (such as macro cells, pico cells, femto cells, and / or another type of cell). In contrast, macro cells can cover relatively large geographic areas, for example, several thousand meters in radius, femto cells can cover relatively small geographic areas, for example, homes, and pico cells cover areas that are smaller than the areas covered by macro cells but larger than the areas covered by femto cells. For example, network node 101 can cover macro cells, while TRP 103 and TRP 105 can cover pico cells or femto cells. In addition, network node 101 can cover pico cells, while TRP 103 and TRP 105 can cover femto cells. In some examples, the geographic area of ​​a cell can move according to the location of a mobile base station. In some embodiments, network node 101 can be implemented as part of a core network instead of a base station. In some embodiments, network node 101, TRP 103, and TRP 105 may implement techniques for carrier aggregation, wherein TRP 103 and TRP 105 may operate on different component carriers, such as a first component carrier (CC) and a second component carrier. In some embodiments, the first CC may be within a first frequency range (FR1) and the second CC may be within a second frequency range (FR2). In some other embodiments, the first CC and the second CC may be within the same frequency range. In some embodiments, TRP 103 and TRP 105 may be coupled to network node 101 via a wireless communication link or via any backhaul connection.

[0033] According to some aspects, UE 102 may be configured to operate based on a wide variety of wireless communication technologies. These technologies may include, but are not limited to, technologies based on 3GPP standards. For example, UE 102 may be configured to operate using Rel-16, Rel-17, or higher. UE 102 may include, but is not limited to, wireless communication devices, smart phones, laptops, desktop computers, tablet computers, personal assistants, monitors, televisions, wearable devices, Internet of Things (IoT), communication devices of vehicles, mobile stations, user stations, remote terminals, wireless terminals, user equipment, etc.

[0034] According to some aspects, UE 102 may include an antenna array or system having multiple antenna panels (such as antenna panel 120 and antenna panel 125). Generally speaking, an antenna system may include one or more antenna panels. The antenna panel may include an array of antenna elements that may be located in physical locations close to each other. The antenna element may be an omnidirectional antenna element, a quasi-omnidirectional antenna element, a directional antenna element, or any other antenna element. In some examples, the antenna panel may be a smart antenna system in which all antenna elements are considered to be pseudo-omnidirectional antenna elements or quasi-sector omnidirectional antenna elements and include phase shifters. Directional beams (such as transmission (Tx) beams or reception (Rx) beams) may be formed by adjusting the phase shifters of multiple antenna elements. For example, antenna panel 120 may provide beams 121 and beams 123, and antenna panel 125 may provide beams 127 and beams 129. In some examples, there may be more or fewer antenna panels, and the antenna panels may include 2, 4, 8, 16, or another number of antenna elements, which may include dipole antenna elements, monopole antenna elements, patch antenna elements, loop antenna elements, microstrip antenna elements, or any other type of antenna element suitable for transmission of RF signals.

[0035] According to some aspects, UE 102 may include a transceiver 133 coupled to antenna panel 120 and antenna panel 125, a processor 131, and a memory 132 communicatively coupled to transceiver 133. Transceiver 133 may implement wireless communications with network node 101, TRP 103, and TRP 105 using an antenna beam pair formed by antenna panel 120 and antenna panel 125. For example, UE 102 may communicate with TRP 103 and TRP 105 using an antenna beam pair including a first beam of first antenna panel 120 and a second beam of second antenna panel 125, such as antenna beam pairs (beam 121, beam 127), (beam 121, beam 129), (beam 123, beam 127), or (beam 123, beam 129).

[0036] In some embodiments, the processor 131 may receive one or more SRS configuration sets, such as the SRS configuration set 141, the SRS configuration set 151, or both, from the network node 101. The SRS configuration set 141 includes configurations of SRS resources for one or more antenna beam pairs, such as configurations for SRS resources 142 (which may be referred to as SRS resource configuration 142, which may be used for a first beam such as beam 121), and configurations for SRS resources 146 (which may be referred to as SRS resource configuration 146, which may be used for a second beam such as beam 127). When the SRS configuration set 141 is generated by the network node 101, the SRS configuration 142 may include a parameter SRS-SpatialRelationInfo. If SRS-SpatialRelationInfo is configured, the UE 102 will use the corresponding spatial filter configured by the SRS-SpatialRelationInfo. If SRS-SpatialRelationInfo is not configured, the UE 102 will select the spatial filter by itself. In some embodiments, when the source configuration 142 does not include the IE spatialRelationInfo, spatialRelationInfo is not configured. In some embodiments, the SRS resource configuration 142 may include a (blank) SRS spatial filter 147a that is not configured by the network node 101. For example, the SRS spatial filter 147a has unassigned parameters without assigned values, or is assigned a placeholder value that is intended to be changed by the UE. Similarly, the SRS resource configuration 146 may include an SRS spatial filter 149a that is not configured by the network node 101, for example, with unassigned parameters as discussed above. The UE 102 may select a first direction for the antenna beam 121, and further configure the SRS spatial filter 147a received from the network node 101 to become an SRS spatial filter 147b to achieve the first direction for the beam 121. Configuring SRS spatial filter 147b may be performed by assigning a value to an unassigned parameter of SRS spatial filter 147a to have a new value different from the value of SRS spatial filter 147a. Similarly, UE 102 may select a second direction for antenna beam 127, and further configure SRS spatial filter 149a received from network node 101 to become SRS spatial filter 149b having a value different from the value of SRS spatial filter 149a to achieve the second direction for beam 127.

[0037] In some embodiments, one or more SRS configuration sets, such as SRS configuration set 141 or SRS configuration set 151, may be indicated by one or more parameters including SRS-ResourceSet. In some embodiments, SRS-ResourceSet may be a record including various components, such as "SRS-Resources", "SRS resource set identifier", "SRS resourceType", and more. For example, "SRS-Resources" may be configured or set to BeamManagement, semi-static, semi-persistent, non-periodic, or periodic via a higher layer parameter SRS called "Resourcetype". Thus, SRS spatial filters, such as SRS spatial filter 147a, SRS spatial filter 149a, SRS spatial filter 147b, or SRS spatial filter 149b, may be indicated by a parameter spatialRelationInfo included in the SRS-ResourceSet and configured by the UE. When the SRS configuration set 141 is generated by the network node 101 and represented by the parameter SRS-ResourceSet (which is a record including a field spatialRelationInfo representing an SRS spatial filter), the spatialRelationInfo may not have an assigned value when it is generated. The UE 102 may receive the SRS configuration set 141 and further assign a value to the spatialRelationInfo to configure the spatialRelationInfo and indicate the direction of the beam 121.

[0038] In some embodiments, the SRS spatial filter for the first SRS resource (such as the SRS spatial filter 147a) or the SRS spatial filter for the second SRS resource (such as the SRS spatial filter 149a) may be a parameter included in one or more SRS configuration sets (such as the SRS configuration set 141). In some embodiments, the SRS spatial filter for the first SRS resource (such as the SRS spatial filter 147a) or the SRS spatial filter for the second SRS resource (such as the SRS spatial filter 149a) may be configured only by the UE 102. In some embodiments, the SRS spatial filter 147a or the SRS spatial filter 149a may have a placeholder value assigned by the network node 101, which may be overwritten by the UE 102. In some embodiments, if UE 102 overwrites the value of SRS spatial filter 147a or SRS spatial filter 149a configured by network node 101, the UE reconfigures SRS spatial filter 147a to SRS spatial filter 147b and / or reconfigures SRS spatial filter 149a to SRS spatial filter 149b.

[0039] In some embodiments, UE 102 may receive only one SRS configuration set, such as SRS configuration set 151. In some embodiments, SRS configuration set 151 may include multiple SRS resource pairs for multiple beam pairs of UE 101. For example, SRS configuration set 151 may include SRS resource pair 153, which includes SRS resources configured by SRS resource configuration 152 for a first beam, such as beam 121, and SRS resources configured by SRS resource configuration 154 for a second beam, such as beam 127. In addition, SRS configuration set 151 may include SRS resource pair 155, which includes SRS resources configured by SRS resource configuration 156 for a first beam, such as beam 121, and SRS resources configured by SRS resource configuration 158 for a second beam, such as beam 129.

[0040] In some embodiments, the UE 102 may receive only one SRS configuration set, such as the SRS configuration set 141. The SRS resources configured by the SRS configuration set 141 may be divided into two groups, such as group 143 and group 145. Group 143 may include SRS resources configured by the SRS resource configuration 142 and SRS resources configured by the SRS resource configuration 144. And group 145 may include SRS resources configured by the SRS resource configuration 146 and SRS resources configured by the SRS resource configuration 148. For a beam pair (beam 121, beam 127), the processor 131 may select a first SRS resource for a first beam (e.g., beam 121) from the SRS resource group 143 configured by the SRS configuration set 141 received from the network node 101, and select a second SRS resource for a second beam (e.g., beam 127) from the SRS resource group 145 configured by the same SRS configuration set 141, wherein the first group of SRS resources is different from the second group of SRS resources.

[0041] In some embodiments, processor 131 may select a first SRS resource (e.g., an SRS resource configured by SRS resource configuration 142) for a first beam (e.g., beam 121) configured by SRS configuration set 141, and select a second SRS resource (e.g., an SRS resource configured by SRS resource configuration 152) for a second beam (e.g., beam 129) configured by an SRS configuration set 151 different from SRS configuration set 141. In some embodiments, SRS configuration set 141 and SRS configuration set 151 may be configured for the same uplink transmission purpose, such as being configured to have the same parameter values, such as "beamManagement", "codebook", or "nonCodebook" for SRS-ResourceSet.

[0042] In some embodiments, for a beam pair (beam 121, beam 127), processor 131 may simultaneously transmit SRS 111a to TRP 103 using beam 121 in a first direction by a first SRS resource (e.g., an SRS resource configured by SRS resource configuration 142), and transmit SRS 113a to TRP 105 using beam 127 in a second direction by a second SRS resource (e.g., an SRS resource configured by SRS resource configuration 146). Similarly, for the beam pair (beam 123, beam 129), the processor 131 can simultaneously transmit SRS111b to TRP 103 using beam 123 in a first direction by a first SRS resource (e.g., an SRS resource configured by SRS resource configuration 152 or an SRS resource configured by SRS resource configuration 144), and transmit SRS113b to TRP 105 using beam 129 in a second direction by a second SRS resource (e.g., an SRS resource configured by SRS resource configuration 154 or an SRS resource configured by SRS resource configuration 148). In addition, the processor 131 can transmit SRS to TRP 103 and TRP 105 respectively through one or more antenna beam pairs (such as (beam 121, beam 127), (beam 121, beam 129), (beam 123, beam 127), or (beam 123, beam 129)).

[0043] In some embodiments, processor 131 may receive an indication of a selected antenna beam pair 116 from network node 101, wherein the selected antenna beam pair 116 may be selected by network node 101 based on a measured signal strength represented by a reference signal received power (RSRP) or a signal to interference plus noise ratio (SINR) of an SRS (such as SRS111a, SRS111b, SRS113a, or SRS113b) transmitted by one or more antenna beam pairs (such as (beam 121, beam 127), (beam 121, beam 129), (beam 123, beam 127), or (beam 123, beam 129). Thereafter, processor 131 may simultaneously transmit data to TRP 103 and TRP 105 via a physical uplink shared channel (PUSCH) via the selected antenna beam pair 116.

[0044] In some embodiments, the processor 131 may determine an updated antenna beam pair 118 to replace the selected antenna beam pair 116 by the updated antenna beam pair 118 for transmitting data to the TRP 103 and the TRP 105 simultaneously via the PUSCH. In some embodiments, the processor 131 may receive a message from the network node 101 to instruct the UE 102 to determine the updated antenna beam pair 118, wherein the message is received after the expiration of the timer 168 maintained by the network node 101. In some embodiments, the processor 131 may initiate a beam pair update procedure by sending an update message 119 to the network node 101, wherein the update message 119 may include uplink control information (UCI) or a medium access control (MAC) control element (MAC-CE) message.

[0045] In some embodiments, the network node 101 may include an antenna panel 175 that generates an antenna beam 177, a transceiver 173, a memory 172, and a processor 171 communicatively coupled to the transceiver. The transceiver may be configured to enable wireless communications with two TRPs in the system 100, such as TRP 103 and TRP 105, and UE 102. The network 101 may generate multiple SRS configuration sets, such as SRS configuration set 141, SRS configuration set 151, or more. The multiple SRS configuration sets may include configurations of SRS resources for one or more antenna beam pairs, such as (beam 121, beam 127), (beam 121, beam 129), (beam 123, beam 127), or (beam 123, beam 129). The configuration of SRS resources for one or more antenna beam pairs may include a first configuration of a first SRS resource for a first beam (e.g., an SRS resource configured by SRS resource configuration 142), and a second configuration of a second SRS resource for a second beam (e.g., an SRS resource configured by SRS resource configuration 146). The SRS resources configured by SRS resource configuration 142 and the SRS resources configured by SRS resource configuration 146 may together form an SRS resource pair 162 for an antenna beam pair (such as (beam 121, beam 127)).

[0046] In some embodiments, the network node 101 may transmit a plurality of SRS configuration sets, such as SRS configuration set 141 or SRS configuration set 151, to the UE 102. In addition, the network node 101 may measure the signal strength of the SRS. In some embodiments, the network node 101 may receive an indication of the measured signal strength of an SRS (e.g., SRS111a, SRS111b, SRS113a, SRS113b) transmitted by one or more antenna beam pairs received by the TRP 103 and the TRP 105. The indication of the measured signal strength of the SRS may include a first signal strength indication for a first SRS (such as SRS111a) and a second signal strength indication for a second SRS (e.g., SRS113a), which may form the SRS signal strength of the beam pair 112. (The signal strength is in Figure 1 14. In the embodiment of the present invention, the SRS 111a of the first beam pair 114 may be indicated as "SS", for example, SRS 111a of the second beam pair 114 may be received by TRP 103 using beam 121 in a first direction determined by SRS spatial filter 147b configured by UE 102 through SRS resources configured by SRS resource configuration 142. SRS 113a may be received by TRP 105 through SRS resources configured by SRS resource configuration 146 using beam 127 in a second direction determined by SRS spatial filter 149b configured by UE 102. SRS 111a and SRS 113a may be transmitted simultaneously to TRP 103 and TRP 105, respectively. Similarly, network node 101 may receive or measure an indication of a measured signal strength of the SRS of the second beam pair 114.

[0047] In some embodiments, the SRS signal strength of beam pair 112 may include a first SRS signal strength of beam 1a and a second SRS signal strength of beam 1b. Similarly, the SRS signal strength of beam pair 114 may include a first SRS signal strength of beam 2a and a second SRS signal strength of beam 2b. The SRS signal strengths of beam 1a, beam 1b, beam 2a, and beam 2b may be measured by RSRP or SINR.

[0048] In some embodiments, the network node 101 may select the antenna beam pair 116 based on an indication of the measured signal strength of the SRS (such as the SRS signal strength of beam 1a, the SRS signal strength of beam 1b, the SRS signal strength of beam 2a, the SRS signal strength of beam 2b, and more) among a plurality of measured signal strengths of the SRS of the beam pair (such as the measured signal strength of the SRS of beam pair 112, the measured signal strength of the SRS of beam pair 114, or more). In some embodiments, to determine the selected antenna beam pair 116, the network node 101 may determine whether the first signal strength indication (e.g., the SRS signal strength of beam 1a or the SRS signal strength of beam 1b) is greater than a first predetermined threshold 164 of the measured signal strength, and determine whether the difference between the first signal strength indication and the second signal strength indication is less than a second predetermined threshold 166. In some embodiments, the first predetermined threshold 164 or the second predetermined threshold 166 of measured signal strength may be predefined as a single value or predefined as a range of values ​​and signaled by the UE 102 and configured by the network node 101 through RRC signaling.

[0049] When there are multiple measured signal strengths of the SRS of the beam pair that meet the condition compared to the first predetermined threshold 164 or the second predetermined threshold 166 of the measured signal strength, the network node 101 can determine the selected antenna beam pair 116 from one or more antenna beam pairs based on the order of the indications of the measured signal strengths of the SRS for the one or more antenna beam pairs.

[0050] In some embodiments, when the SRS signal strength is represented by RSRP, the SRS signal strength of beam 1a can be represented by RSRP_B1, and the SRS signal strength of beam 1b can be represented by RSRP_B2. The network node 101 can sort the measured signal strength of the SRS of beam pair 112, the measured signal strength of the SRS of beam pair 114, and more pairs based on the sum of RSRP_B1 and RSRP_B2. Therefore, the pair with the largest sum is ranked first, followed by the pair with the second largest sum, and so on. In some embodiments, the sum of RSRP_B1 and RSRP_B2 can be performed in a linear or logarithmic manner. In some embodiments, the network node 101 can sort these pairs based on the minimum value of (RSRP_B1, RSRP_B2) represented as min(RSRP_B1, RSRP_B2), where the minimum value is the lowest value of RSRP_B1 or RSRP_B2. Thus, the pair with the largest min(RSRP_B1, RSRP_B2) is ranked first, followed by the pair with the second largest min(RSRP_B1, RSRP_B2), and so on. In some embodiments, the network node 101 may sort the pairs based on the maximum value of (RSRP_B1, RSRP_B2), denoted as max(RSRP_B1, RSRP_B2), where max(RSRP_B1, RSRP_B2) is the maximum value of RSRP_B1 or RSRP_B2. Thus, the pair with the largest max(RSRP_B1, RSRP_B2) is ranked first, followed by the pair with the second largest max(RSRP_B1, RSRP_B2), and so on.

[0051] In some embodiments, when the SRS signal strength is represented by SINR, the SRS signal strength of beam 1a can be represented by SINR_B1, and the SRS signal strength of beam 1b can be represented by SINR_B2. The network node 101 can sort the measured signal strength of the SRS of beam pair 112, the measured signal strength of the SRS of beam pair 114, and more pairs based on the sum of SINR_B1 and SINR_B2. Therefore, the pair with the largest sum is ranked first, followed by the pair with the second largest sum, and so on. In some embodiments, the sorting can be performed based on the sum of the effective channel capabilities (e.g., log(1+SINR_B1)+log(1+SINR_B2)). In some embodiments, the sorting can be performed based on a combination of RSRP representation and SINR representation.

[0052] In some embodiments, the network node 101 may determine an updated antenna beam pair 118 to replace the selected antenna beam pair 116 with the updated antenna beam pair 118 for simultaneously transmitting data to the TRP 103 and the TRP 105 via the PUSCH.

[0053] In some embodiments, for each reported beam pair, there is an attached timer, such as timer 168. When the timer expires, the network node 101 may consider the beam pair invalid or unavailable. The timer may be predefined in the specification with one value or a range of values. Once the timer expires, the network node 101 may initiate another group-based beam report. If the UE 102 considers the current beam pair to be still valid, the UE 102 may also initiate a message to override the timer. The message to override the timer by the UE 102 may be sent to the network node 101 via an RRC message, a MAC CE, or a UCI. In some embodiments, in a periodic or semi-periodic group based report, the most recently reported beam pair may override the previously reported beam pair. If timer 168 is used, timer 168 may be reset.

[0054] In some embodiments, the UE 102 may initiate a beam pair update by sending an update message 119 to the network node 101. The update message 119 for beam pair update may be considered as uplink control information (UCI). In some embodiments, the update message 119 may be considered as special channel state information (CSI) feedback. In terms of priority, the update message 119 may have the same priority as the existing CSI (e.g., L1-RSRP or L1-SINR). In some embodiments, the update message 119 may be considered as a new type of UCI in addition to the existing SR / HARQ-ACK / CSI / CG-UCI messages. In some embodiments, the update message 119 may be independently encoded using polarity codes, or may be jointly encoded using polarity codes with other types of UCI.

[0055] In some embodiments, the UE 102 may initiate a beam pair update by sending an update message 119 to the network node 101. The update message 119 for the beam pair update may be sent via a MAC-CE. If the UE 102 already has an UL grant for PUSCH transmission, the UE 102 may transmit the update message 119 as a MAC-CE using the existing UL grant. If the UE 102 does not have an UL grant for PUSCH, one or both of the following user cases may be considered. In some embodiments, the UE 102 may request an UL grant via a scheduling request (SR). The network node 101 may configure a specific scheduling request resource dedicated to the purpose of UE beam pair update. During UCI multiplexing and collision handling, the SR may have a different or the same priority than an existing SR. In some embodiments, the network node 101 or the UE 102 may use an existing SR. The UE 102 may request an UL grant via a RACH procedure (e.g., contention-free random access (CFRA) or contention-based random access (CBRA)).

[0056] In some embodiments, UE 102 may have the capability to support downlink group-based beam reporting or SRS-based beam selection. UE 102 may use downlink group-based beam reporting or SRS-based beam selection for STxMP-based transmission. Network node 101 may configure UE 102 to select through RRC or MAC CE messages.

[0057] See also Figure 2A According to some aspects, it can be based on Figure 2A1. The block diagram shown implements UE 102. UE 102 may have an antenna system including antenna panel 120 and antenna panel 125, which have one or more antenna elements to form various beams, such as beam 121, beam 123, beam 127, or beam 129, coupled to transceiver 133 and controlled by processor 131. Transceiver 133 and antenna panel 120 and antenna panel 125 may enable wireless communications in a wireless network such as wireless system 100, including wireless communications with TRP 103 and TRP 105. In detail, transceiver 133 may include radio frequency (RF) circuit 216, transmission circuit 212, and reception circuit 214 to enable wireless communications with other UEs and / or base stations, as discussed with respect to wireless system 100. RF circuit 216 may include multiple parallel RF chains for performing one or more of transmission or reception functions, each RF chain connected to one or more antenna elements in the antenna panel. In addition, the processor 131 may be communicatively coupled to the memory 132 and the transceiver 133. Various data may be stored in the memory 132. In some examples, the memory 132 may store the SRS configuration set 141, the SRS configuration set 151, the selected antenna beam pair 116, the updated beam pair 118, the update message 119, such as for Figure 1 described.

[0058] In some embodiments, the memory 132 may store instructions that, when executed by the processor 131, perform or cause the operations described herein to be performed, for example, operations to support SRS-based beam pair selection for STxMP. Alternatively, the processor 131 may be "hard-coded" to perform the operations described herein. In some embodiments, the processor 131 may be configured to perform operations for Figure 3A The operation described.

[0059] See also Figure 2B, the network node 101 may have an antenna system including one or more antenna panels 175 to form various beams, such as beam 177, coupled to the transceiver 173 and controlled by the processor 171. The transceiver 173 and the antenna panel 175 may enable wireless communications in a wireless network (such as the wireless system 100), including wireless communications with the UE 102. In detail, the transceiver 173 may include a radio frequency (RF) circuit 236, a transmission circuit 232, and a reception circuit 234 to enable wireless communications with other UEs and / or base stations, as discussed with respect to the wireless system 100. The RF circuit 236 may include a plurality of parallel RF chains for performing one or more of the transmission or reception functions, each RF chain connected to one or more antenna elements in the antenna panel. In addition, the processor 171 may be communicatively coupled to the timer 168, the memory 172, and the transceiver 173. Various data may be stored in the memory 132. In some examples, the memory 172 may store the SRS configuration set 141, the SRS configuration set 151, the selected antenna beam pair 116, the updated beam pair 118, the SRS signal strength of the first beam pair 112, the SRS signal strength of the second beam pair 114, the first predetermined threshold 164 of the measured signal strength, and the second predetermined threshold 166, such as for Figure 1 described.

[0060] In some embodiments, the memory 172 may store instructions that, when executed by the processor 171, perform or cause the operations described herein to be performed, for example, operations that support implementation of SRS-based beam pair selection for STxMP. Alternatively, the processor 171 may be "hard-coded" to perform the operations described herein. In some embodiments, the processor 171 may be configured to perform operations for Figure 3B The operation described.

[0061] Figure 3A An exemplary process 300 for supporting SRS-based beam pair selection for STxMP performed by UE 102 according to some aspects of the present disclosure is illustrated. Process 300 may be performed by UE 102, which may be as follows: Figure 2A For example, process 300 may be implemented by processor 131 in conjunction with other elements of UE 102 and / or Figure 4 The computer system 400 of the present invention is executed or caused to be executed. The process 300 is not limited to the specific aspects depicted in those figures, and other systems may be used to perform the method, as will be understood by those skilled in the art. It should be understood that not all operations may be required, and the operations may not be performed in the same order as shown in the process 300.

[0062] At 301, UE 102 may receive one or more SRS configuration sets, such as SRS configuration set 141 or SRS configuration set 151, from network node 101. The one or more SRS configuration sets may include configurations of SRS resources for one or more antenna beam pairs, such as a beam pair including (beam 121, beam 127), (beam 121, beam 129), (beam 123, beam 127), and (beam 123, beam 129), wherein the antenna beam pair includes a first beam of a first antenna panel and a second beam of a second antenna panel.

[0063] At 303, UE 102 may select a direction of an antenna beam in one or more antenna beam pairs. For example, one or more antenna beams may be directed toward Figure 1 TRP 103 and / or TRP 105 in.

[0064] At 305, UE 102 may configure a first SRS spatial filter of a first SRS resource to determine a first direction of a first beam, and configure a second SRS spatial filter of a second SRS resource to determine a second direction of a second beam, wherein the first SRS resource and the second SRS resource are configured by the configuration for the SRS resource and are used for the first beam and the second beam, respectively. For example, processor 131 may configure SRS spatial filter 147a of an SRS resource configured by SRS resource configuration 142 to become SRS spatial filter 147b to determine a first direction of beam 121, and configure SRS spatial filter 149a of an SRS resource configured by SRS resource configuration 146 to become SRS spatial filter 149b to determine a second direction of beam 127, wherein the SRS resource configured by SRS resource configuration 142 and the SRS resource configured by SRS resource configuration 146 are configured by the configuration for the SRS resource and are used for beam 121 and beam 127, respectively.

[0065] At 307, UE 102 may simultaneously transmit SRS111a to the first TRP 103 using beam 121 in a first direction using the SRS resources configured by SRS resource configuration 142, and transmit SRS113a to the first TRP 105 using beam 127 in a second direction using the SRS resources configured by SRS resource configuration 146.

[0066] Figure 3B An exemplary process 310 for supporting SRS-based beam pair selection for STxMP performed by the network node 101 according to some aspects of the present disclosure is illustrated. The process 310 may be performed by the network node 101, which may be as follows: Figure 2BFor example, process 310 may be implemented by processor 171 of network node 101 in conjunction with other elements of network node 101 and / or Figure 4 The computer system 400 of the present invention is executed or caused to be executed. The process 310 is not limited to the specific aspects depicted in those figures, and other systems may be used to perform the method, as will be understood by those skilled in the art. It should be understood that not all operations may be required, and the operations may not be performed in the same order as shown in the process 310.

[0067] At 311, the network node 101 may generate multiple SRS configuration sets, such as SRS configuration set 141, SRS configuration set 151, or more. The multiple SRS configuration sets may include one SRS configuration set, two SRS configuration sets, or more. The multiple SRS configuration sets may include configurations of SRS resources for one or more antenna beam pairs, such as a beam pair including the following items: (beam 121, beam 127), (beam 121, beam 129), (beam 123, beam 127), and (beam 123, beam 129).

[0068] At 313 , the network node 101 may transmit a plurality of SRS configuration sets to the UE 102 .

[0069] At 315, the network node 101 may receive or measure an indication of a signal strength (RSRP) and a signal quality (SINR) of an SRS transmitted by one or more antenna beam pairs received by the TRPs 103 and 105, wherein the indication of the signal strength of the SRS includes a first signal strength indication for a first SRS received by a first TRP transmitted through a first SRS resource using a first beam in a first direction determined by a first SRS spatial filter configured by the UE, and a second signal strength indication for a second SRS received by a second TRP transmitted through a second SRS resource using a second beam in a second direction determined by a second SRS spatial filter configured by the UE, wherein the first SRS and the second SRS are simultaneously transmitted to the first TRP and the second TRP, respectively. For example, the network node 101 may receive an SRS signal strength of beam 1a and an SRS signal strength of beam 1b, and at Figure 1112. The SRS signal strength of beam 1a may be received by TRP 103, which is transmitted through the SRS resource configured by SRS resource configuration 142 using beam 121 in the first direction determined by SRS spatial filter 147b configured by UE 102. The SRS signal strength of beam 1b may be received by TRP 105, which is transmitted through the SRS resource configured by SRS resource configuration 146 using beam 127 in the second direction determined by SRS spatial filter 149b configured by UE 102. As described above, a similar construction exists for beam pair SRS SS114.

[0070] At 317, the network node 101 may select antenna beam pair 116 from one or more antenna beam pairs, such as beam pairs (beam 121, beam 127), (beam 121, beam 129), (beam 123, beam 127), (beam 123, beam 129). Antenna beam pair 116 may be selected based on an indication of the signal strength of the SRS, such as the measured signal strength of the SRS of beam pair 112, the measured signal strength of the SRS of beam pair 114, or more. In some embodiments, the measured signal strength of the SRS of beam pair 112 or the measured signal strength of the SRS of beam pair 114 may be represented by RSRP or SINR.

[0071] For example, one or more computer systems (such as Figure 4 For the operations described for process 300 or process 310, computer system 400 may be any computer capable of performing the functions described herein, such as Figure 1 102 or network node 101 in the computer system 400. The computer system 400 includes one or more processors (also referred to as central processing units or CPUs), such as a processor 404. The processor 404 is connected to a communication infrastructure 406 (e.g., a bus). The computer system 400 also includes a user input / output device 403, such as a monitor, a keyboard, a pointing device, etc., which communicates with the communication infrastructure 406 through a user input / output interface 402. The computer system 400 also includes a main memory or primary storage 408, such as a random access memory (RAM). The main memory 408 may include one or more levels of cache. The main memory 408 has control logic (e.g., computer software) and / or data stored therein.

[0072] The computer system 400 may also include one or more secondary storage devices or memories 410. The secondary storage 410 may include, for example, a hard disk drive 412 and / or a removable storage device or drive 414. The removable storage drive 414 may be a floppy disk drive, a tape drive, an optical drive, an optical storage device, a tape backup device, and / or any other storage device / drive.

[0073] The removable storage drive 414 may interact with a removable storage unit 418. The removable storage unit 418 includes a computer usable or readable storage device having computer software (control logic) and / or data stored thereon. The removable storage unit 418 may be a floppy disk, a magnetic tape, an optical disk, a DVD, an optical storage disk, and / or any other computer data storage device. The removable storage drive 414 reads from and / or writes to the removable storage unit 418 in a well-known manner.

[0074] According to some aspects, secondary memory 410 may include other devices, tools, or other methods for allowing computer programs and / or other instructions and / or data to be accessed by computer system 400. Such devices, tools, or other methods may include, for example, a removable storage unit 422 and an interface 420. Examples of removable storage unit 422 and interface 420 may include a program cartridge and cartridge interface (such as those found in video game devices), a removable memory chip (such as an EPROM or PROM) and associated socket, a memory stick and USB port, a memory card and associated memory card slot, and / or any other removable storage unit and associated interface.

[0075] In some examples, for the operations described with respect to process 300 or process 310, main memory 408, removable storage unit 418, removable storage unit 422 may store instructions that, when executed by processor 404, cause processor 404 to perform operations for performing Figure 1 Operation of the UE, UE 102 or network node 101 in.

[0076] The computer system 400 may also include a communication or network interface 424. The communication interface 424 enables the computer system 400 to communicate and interact with any combination of remote devices, remote networks, remote entities, etc. (individually and collectively referenced by reference number 428). For example, the communication interface 424 may allow the computer system 400 to communicate with the remote device 428 via a communication path 426, which may be wired and / or wireless and may include any combination of a LAN, a WAN, the Internet, etc. Control logic components and / or data may be transmitted to and from the computer system 400 via the communication path 426.

[0077] The operations in the foregoing aspects can be implemented in various configurations and architectures. Thus, some or all of the operations in the foregoing aspects may be performed in hardware, software, or in both hardware and software. In some aspects, a tangible, non-transient device or article includes a tangible, non-transient computer-usable or readable medium on which a control logic component (software) is stored, also referred to herein as a computer program product or program storage device. This includes, but is not limited to, a computer system 400, a main memory 408, an auxiliary memory 410, and removable storage units 418 and 422, as well as tangible articles embodying any combination of the foregoing. Such control logic, when executed by one or more data processing devices (such as computer system 400), causes such data processing devices to operate as described herein.

[0078] Based on the teachings contained in this disclosure, it will be apparent to those skilled in the relevant art how to use Figure 4 The various aspects of the present disclosure may be made and used with data processing devices, computer systems, and / or computer architectures other than those shown. In particular, the various aspects may operate with software, hardware, and / or operating system implementations other than those described herein.

[0079] It should be understood that the Detailed Description section, rather than the Summary and Abstract sections, is intended to be used to interpret the claims. The Summary and Abstract sections may set forth one or more but not all exemplary aspects of the present disclosure as contemplated by the inventors, and thus are not intended to limit the present disclosure or the appended claims in any way.

[0080] Although the present disclosure has been described herein with reference to exemplary aspects of exemplary fields and applications, it should be understood that the present disclosure is not limited thereto. Other aspects and modifications are possible and are within the scope and essence of the present disclosure. For example, and without limiting the generality of this paragraph, the various aspects are not limited to the software, hardware, firmware and / or entities shown in the figures and / or described herein. In addition, the various aspects (whether or not explicitly described herein) have significant practicality for fields and applications outside the examples described herein.

[0081] Various aspects have been described herein by means of functional building blocks that illustrate specific implementations of specific functions and relationships thereof. For ease of description, the boundaries of these functional building blocks have been arbitrarily defined herein. As long as the specified functions and relationships (or their equivalents) are properly performed, alternative boundaries may be defined. In addition, alternative aspects may perform functional blocks, steps, operations, methods, etc., in an order different from that described herein.

[0082] References herein to "one embodiment," "an embodiment," "an exemplary embodiment," or similar phrases indicate that the described embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the relevant art to incorporate such feature, structure, or characteristic into other aspects, whether or not explicitly mentioned or described herein.

[0083] The breadth and scope of the present disclosure should not be limited by any of the above-described exemplary aspects, but should be defined only in accordance with the following claims and their equivalents.

[0084] For one or more embodiments or examples, at least one of the components shown in one or more of the foregoing figures may be configured to perform one or more operations, techniques, processes and / or methods described in the following example section. For example, circuits associated with the UE, base station, network element, etc. described above in conjunction with one or more of the foregoing figures may be configured to operate according to one or more of the examples shown in the example section below.

[0085] The disclosure anticipates that entities responsible for the collection, analysis, disclosure, transmission, storage or other purposes of such personal information data will comply with sound privacy policies and / or privacy measures. Specifically, such entities should implement and adhere to the use of privacy policies and practices that are recognized as meeting or exceeding the industry or government requirements for maintaining the privacy and security of personal information data. Such policies should be easy for users to access and should be updated as changes in the collection and / or use of data occur. Personal information from users should be collected for legal and reasonable entity purposes and should not be shared or sold outside these legal purposes. In addition, such collection / sharing should only be done after receiving the user's informed consent. In addition, such entities should consider taking any necessary steps to protect and safeguard access to such personal information data, and ensure that other entities with access to personal information data comply with their privacy policies and procedures. In addition, such entities can subject themselves to third-party assessments to prove that they comply with widely accepted privacy policies and practices. In addition, policies and practices should be adapted to specific types of personal information data collected and / or accessed, and to applicable laws and standards including considerations of special jurisdictions. For example, in the United States, the collection or acquisition of certain health data may be governed by federal and / or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); while health data in other countries may be subject to other regulations and policies and should be handled accordingly. Therefore, different privacy measures should be advocated for different types of personal data in each country.

Claims

1. A user equipment (UE), comprising: a transceiver coupled to the first antenna panel and the second antenna panel and configured to enable wireless communications with two transmission reception points (TRPs) and a network node in a wireless communication system; and a processor communicatively coupled to the transceiver and configured to: receiving one or more sounding reference signal (SRS) configuration sets from the network node, wherein the one or more SRS configuration sets include configurations of SRS resources for one or more antenna beam pairs, wherein the antenna beam pairs include a first beam of the first antenna panel and a second beam of the second antenna panel; selecting a direction of an antenna beam of the one or more antenna beam pairs; configuring a first SRS spatial filter of a first SRS resource to determine a first direction of the first beam, and configuring a second SRS spatial filter of a second SRS resource to determine a second direction of the second beam, wherein the first SRS resource and the second SRS resource are configured by the configuration for the SRS resources and are used for the first beam and the second beam, respectively; as well as At the same time, the first SRS resource is used to transmit the first SRS to the first TRP using the first beam in the first direction, and the second SRS resource is used to transmit the second SRS to the second TRP using the second beam in the second direction.

2. The UE according to claim 1, wherein the one or more SRS configuration sets include one or more parameters including SRS-ResourceSet, and the first SRS spatial filter is associated with a parameter spatialRelationInfo included in the SRS-ResourceSet.

3. The UE according to claim 1, wherein the first SRS spatial filter of the first SRS resource or the second SRS spatial filter of the second SRS resource is associated with a parameter included in the one or more SRS configuration sets, and wherein the processor is further configured to change the parameter from a first value to a second value to configure the first SRS spatial filter. 4 . The UE of claim 1 , wherein the SRS resources for the one or more antenna beam pairs are included in an SRS configuration set determined by the network node.

5. The UE according to claim 1, wherein the processor is further configured to: determining the first SRS resource for the first beam from a first set of SRS resources configured by a first SRS configuration set received from the network node; and The second SRS resources for the second beam are determined from a second group of SRS resources configured by the first SRS configuration set, wherein the first group of SRS resources is different from the second group of SRS resources.

6. The UE according to claim 1, wherein the processor is further configured to: determining the first SRS resource for the first beam configured by a first SRS configuration set received from the network node; and Determine the second SRS resource for the second beam configured by a second SRS configuration set received from the network node, wherein the second SRS configuration set is different from the first SRS configuration set. 7 . The UE according to claim 6 , wherein the first SRS configuration set and the second SRS configuration set are configured for the same uplink transmission purpose.

8. The UE according to claim 1, wherein the processor is further configured to: Transmitting SRS to the first TRP and the second TRP respectively through the one or more antenna beam pairs; receiving an indication of a selected antenna beam pair from the network node, wherein the selected antenna beam pair is selected by the network node based on a measured signal strength represented by a reference signal received power (RSRP) or a signal to interference plus noise ratio (SINR) of the SRS transmitted by the one or more antenna beam pairs; and Data is transmitted to the first TRP and the second TRP simultaneously by the selected antenna beam pair through the physical uplink shared channel (PUSCH).

9. The UE according to claim 8, wherein the processor is further configured to: Determine an updated antenna beam pair to replace the selected antenna beam pair for transmitting data to the first TRP and the second TRP simultaneously through the PUSCH by the updated antenna beam pair.

10. The UE according to claim 9, wherein the processor is further configured to: A message is received from the network node instructing the UE to determine the updated antenna beam pair, wherein the message is received after expiration of a timer maintained by the network node.

11. The UE according to claim 9, wherein the processor is further configured to: The beam pair update procedure is initiated by sending an update message to the network node, wherein the update message includes uplink control information (UCI) or a medium access control (MAC) control element (MAC-CE) message.

12. A network node, comprising: a transceiver configured to enable wireless communications with two transmission reception points (TRPs) and a user equipment (UE) in a wireless communication system, the UE having a first antenna panel and a second antenna panel; and a processor communicatively coupled to the transceiver and configured to: generating a plurality of sounding reference signal (SRS) configuration sets, wherein the plurality of SRS configuration sets include configurations of SRS resources for one or more antenna beam pairs, wherein the antenna beam pair includes a first beam of the first antenna panel and a second beam of the second antenna panel, and the configurations of the SRS resources for the one or more antenna beam pairs include a first configuration of a first SRS resource for the first beam and a second configuration of a second SRS resource for the second beam; transmitting the plurality of SRS configuration sets to the UE; as well as Receive or perform measurement of an indication of signal strength of an SRS transmitted by the one or more antenna beam pairs received by the first TRP and the second TRP, wherein the indication of signal strength of the SRS includes a first signal strength indication of the first SRS received by the first TRP and transmitted through the first SRS resource using the first beam in a first direction determined by the first SRS spatial filter configured by the UE, and a second signal strength indication of the second SRS received by the second TRP and transmitted through the second SRS resource using the second beam in a second direction determined by the second SRS spatial filter configured by the UE.

13. A network node according to claim 12, wherein the first signal strength indication is represented by a reference signal received power (RSRP) or a signal to interference plus noise ratio (SINR) of the first SRS received by the first TRP and transmitted through the first SRS resource by the first beam in the first direction.

14. The network node of claim 12, wherein the processor is further configured to: An antenna beam pair is selected from the one or more antenna beam pairs based on the indication of signal strength of the SRS, wherein the first signal strength indication or the second signal strength indication is represented by a reference signal received power (RSRP) or a signal to interference plus noise ratio (SINR).

15. The network node of claim 14, wherein to determine the selected antenna beam pair, the processor is further configured to: A determination is made as to whether the first signal strength indication or the second signal strength indication is greater than a predetermined threshold value of signal strength.

16. The network node according to claim 15, wherein the predetermined threshold of signal strength is a first predetermined threshold, and the processor is further configured to: A determination is made as to whether a difference between the first signal strength indication and the second signal strength indication is less than a second predetermined threshold.

17. The network node of claim 14, wherein to determine the selected antenna beam pair, the processor is further configured to: A selected antenna beam pair is determined from the one or more antenna beam pairs based on the ranking of the indications of signal strengths of the SRSs for the one or more antenna beam pairs.

18. The network node of claim 14, wherein the processor is further configured to: Determine an updated antenna beam pair to replace the selected antenna beam pair for transmitting data to the first TRP and the second TRP simultaneously via PUSCH by the updated antenna beam pair.

19. A network node according to claim 12, wherein the multiple SRS configuration sets include an SRS configuration set having a first group of SRS resources and a second group of SRS resources, and the SRS resources for the one or more antenna beam pairs include the first SRS resources for the first beam selected from the first group of SRS resources and the second SRS resources for the second beam selected from the second group of SRS resources.

20. The network node of claim 12, wherein the multiple SRS configuration sets include two SRS configuration sets, and the SRS resources for the one or more antenna beam pairs include the first SRS resources for the first beam selected from a first SRS configuration set and the second SRS resources for the second beam selected from a second SRS configuration set.

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