# US 2025/0158680 A1 · Techniques for channel state information reference signal-based user equipment beam selection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0158680 A1 - Document ID: US20250158680A1 - Status: Published application - Kind: A1 - Application number: 18/838,370 - Filed: 2023-03-10 - Published: 2025-05-15 - Earliest claimed: 2022-04-11 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Jun ZHU; Raghu Narayan CHALLA; Mihir Vijay LAGHATE; Brian Clarke BANISTER; Vivek SHIRVANTE; Dominic BOIKO; Gerardo Maximiliano GONZALEZ; Raj Kumar NATTHA; Priyanka YENIGALLA; Kevin YING; Sumanth Kumar KOTA - Web page: https://patentgrep.com/patent/US20250158680A1 ## CPC - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0695: {using beam selection} - H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping} - H04B 7/088: {using beam selection} - H04L 5/0005: {Time-frequency} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0023: {Time-frequency-space} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling} - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04L 5/0085: {when channel conditions change} - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify one or more parameters associated with a communication link. The UE may enable, based at least in part on the identified one or more parameters, channel state information reference signal (CSI-RS)-based UE beam selection. The UE may receive a set of CSI-RSs. The UE may select a UE beam based at least in part on the CSI-RSs. Numerous other aspects are described. ## Claims ### Claim 1 A method of wireless communication performed by a user equipment (UE), comprising: identifying one or more parameters associated with a communication link; enabling, based at least in part on the identified one or more parameters, channel state information reference signal (CSI-RS)-based UE beam selection; receiving a set of CSI-RSs; and selecting a UE beam based at least in part on the CSI-RSs. ### Claim 2 (depends on 1) The method of claim 1, further comprising: measuring the set of CSI-RSs via a set of candidate UE beams; and identifying the selected UE beam based at least in part on the measurements. ### Claim 3 (depends on 2) The method of claim 2, wherein measurement of the set of CSI-RSs via the set of candidate UE beams comprises: measuring the set of CSI-RSs within multiple component carriers. ### Claim 4 (depends on 3) The method of claim 3, wherein measurement of the set of CSI-RSs within the multiple component carriers comprises: measuring the set of CSI-RSs of a same resource using one or more of frequency division multiplexing or time division multiplexing. ### Claim 5 (depends on 2) The method of claim 2, wherein identification of the selected UE beam based at least in part the CSI-RSs comprises: identifying the selected UE beam based at least in part on a total spectral efficiency associated with using the selected UE beam on multiple component carriers. ### Claim 6 (depends on 1) The method of claim 1, further comprising: receiving an additional set of CSI-RSs; and transmitting an indication of channel state feedback based at least in part on the additional set of CSI-RSs. ### Claim 7 (depends on 1) The method of claim 1, wherein the one or more parameters comprise one or more of: a signal strength of a synchronization signal block (SSB) on a serving UE beam, a virtual power headroom (VPHR) on a serving UE beam, a rotation speed of the UE, a UE movement speed, or a discontinuous reception (DRX) cycle. ### Claim 8 (depends on 7) The method of claim 7, wherein the enablement of the CSI-RS-based UE beam selection is based at least in part on one or more of: the signal strength of an SSB on a serving UE beam satisfying an SSB threshold, the VPHR on a serving UE beam satisfying a VPHR threshold, the rotation speed of the UE satisfying a rotation speed threshold, the UE movement speed satisfying a movement speed threshold, or the DRX cycle having a cycle duration that satisfies a cycle duration threshold. ### Claim 9 (depends on 1) The method of claim 1, further comprising: disabling, based at least in part on the identified one or more parameters, the CSI-RS-based UE beam selection. ### Claim 10 (depends on 9) The method of claim 9, wherein the disablement of the CSI-RS-based UE beam selection is based at least in part on one or more of: a signal strength of an SSB on a serving UE beam failing to satisfy an SSB threshold, a virtual power headroom (VPHR) on a serving UE beam failing to satisfy a VPHR threshold, a rotation speed of the UE failing to satisfy a rotation speed threshold, a UE movement speed failing to satisfy a movement speed threshold, or a discontinuous reception (DRX) cycle having a cycle duration that fails to satisfy a cycle duration threshold. ### Claim 11 A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors, coupled to the memory, configured to: identify one or more parameters associated with a communication link; enable, based at least in part on the identified one or more parameters, channel state information reference signal (CSI-RS)-based UE beam selection; receive a set of CSI-RSs; and select a UE beam based at least in part on the CSI-RSs. ### Claim 12 (depends on 11) The UE of claim 11, wherein the one or more processors are further configured to: measure the set of CSI-RSs via a set of candidate UE beams; and identify the selected UE beam based at least in part on the measurements. ### Claim 13 (depends on 12) The UE of claim 12, wherein the one or more processors, to measure the set of CSI-RSs via the set of candidate UE beams, are further configured to: Measure the set of CSI-RSs within multiple component carriers. ### Claim 14 (depends on 13) The UE of claim 13, wherein the one or more processors, to measure the set of CSI-RSs within the multiple component carriers, are further configured to: measure the set of CSI-RSs of a same resource using one or more of frequency division multiplexing or time division multiplexing. ### Claim 15 (depends on 12) The UE of claim 12, wherein the one or more processors, to identify the selected UE beam, are further configured to: identify the selected UE beam based at least in part on a total spectral efficiency associated with using the selected UE beam on multiple component carriers. ### Claim 16 (depends on 11) The UE of claim 11, wherein the one or more processors are further configured to: receive an additional set of CSI-RSs; and transmit an indication of channel state feedback based at least in part on the additional set of CSI-RSs. ### Claim 17 (depends on 11) The UE of claim 11, wherein the one or more parameters comprise one or more of: a signal strength of a synchronization signal block (SSB) on a serving UE beam, a virtual power headroom (VPHR) on a serving UE beam, a rotation speed of the UE, a UE movement speed, or a discontinuous reception (DRX) cycle. ### Claim 18 (depends on 17) The UE of claim 17, wherein the enablement of the CSI-RS-based UE beam selection is based at least in part on one or more of: the signal strength of an SSB on a serving UE beam satisfying an SSB threshold, the VPHR on a serving UE beam satisfying a VPHR threshold, the rotation speed of the UE satisfying a rotation speed threshold, the UE movement speed satisfying a movement speed threshold, or the DRX cycle having a cycle duration that satisfies a cycle duration threshold. ### Claim 19 (depends on 11) The UE of claim 11, wherein the one or more processors are further configured to: disable, based at least in part on the identified one or more parameters, the CSI-RS-based UE beam selection. ### Claim 20 (depends on 19) The UE of claim 19, wherein the disablement of the CSI-RS-based UE beam selection is based at least in part on one or more of: a signal strength of an SSB on a serving UE beam failing to satisfy an SSB threshold, a virtual power headroom (VPHR) on a serving UE beam failing to satisfy a VPHR threshold, a rotation speed of the UE failing to satisfy a rotation speed threshold, a UE movement speed failing to satisfy a movement speed threshold, or a discontinuous reception (DRX) cycle having a cycle duration that fails to satisfy a cycle duration threshold. ### Claim 21 A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: identify one or more parameters associated with a communication link; enable, based at least in part on the identified one or more parameters, channel state information reference signal (CSI-RS)-based UE beam selection; receive a set of CSI-RSs; and select a UE beam based at least in part on the CSI-RSs. ### Claim 22 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the one or more instructions further cause the UE to: measure the set of CSI-RSs via a set of candidate UE beams; and identify the selected UE beam based at least in part on the measurements. ### Claim 23 (depends on 22) The non-transitory computer-readable medium of claim 22, wherein the one or more instructions further cause the UE to: measure the set of CSI-RSs within multiple component carriers. ### Claim 24 (depends on 23) The non-transitory computer-readable medium of claim 23, wherein the one or more instructions further cause the UE to: measure the set of CSI-RSs of a same resource using one or more of frequency division multiplexing or time division multiplexing. ### Claim 25 (depends on 22) The non-transitory computer-readable medium of claim 22, wherein the one or more instructions further cause the UE to: identify the selected UE beam based at least in part on a total spectral efficiency associated with using the selected UE beam on multiple component carriers. ### Claim 26 An apparatus for wireless communication, comprising: means for identifying one or more parameters associated with a communication link; means for enabling, based at least in part on the identified one or more parameters, channel state information reference signal (CSI-RS)-based UE beam selection; means for receiving a set of CSI-RSs; and means for selecting a UE beam based at least in part on the CSI-RSs. ### Claim 27 (depends on 26) The apparatus of claim 26, further comprising: means for measuring the set of CSI-RSs via a set of candidate UE beams; and means for identifying the selected UE beam based at least in part on the measurements. ### Claim 28 (depends on 27) The apparatus of claim 27, further comprising: means for measuring the set of CSI-RSs within multiple component carriers. ### Claim 29 (depends on 28) The apparatus of claim 28, further comprising: means for measuring the set of CSI-RSs of a same resource using one or more of frequency division multiplexing or time division multiplexing. ### Claim 30 (depends on 27) The apparatus of claim 27, further comprising: means for identifying the selected UE beam based at least in part on a total spectral efficiency associated with using the selected UE beam on multiple component carriers.