# US 11,909,473 B2 · SRS configurations and SRS transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,473 B2 - Document ID: US11909473B2 - Status: Granted - Kind: B2 - Application number: 17/868,231 - Filed: 2022-07-19 - Published: 2022-11-03 - Granted: 2024-02-20 - Earliest claimed: 2022-07-19 - Assignees: Lenovo (Beijing) Limited - Applicants: Lenovo (Beijing) Limited - Inventors: Bingchao Liu; Chenxi Zhu; Lingling Xiao - Web page: https://patentgrep.com/patent/US11909473B2 ## CPC - H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0413: MIMO systems - H04B 7/06956: {using a selection of antenna panels} - 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 5/0096: {Indication of changes in allocation} - H04B 7/0689: {using different transmission schemes, at least one of them being a diversity transmission scheme} - H04W 24/02: Arrangements for optimising operational condition - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 Methods, a base unit and a remote unit are disclosed. A method comprises determining two or more SRS resource sets for codebook or non-codebook based UL transmission of the mobile unit in the condition that the number of antenna ports simultaneously used by the mobile unit for transmitting is smaller than the number of antenna ports simultaneously used by the mobile unit for receiving; and transmitting a trigger associated with the two or more SRS resource sets to the mobile unit to trigger SRS resource transmissions by the mobile unit. ## Claims ### Claim 1 A base station, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the base station to: transmit a configuration comprising information to configure at least two sounding reference signal (SRS) resource sets for a user equipment (UE) for a codebook based transmission or a non-codebook based transmission; and transmit a first SRS resource indicator and a second SRS resource indicator to the UE for a physical uplink shared channel (PUSCH) transmission, wherein each of the first SRS resource indicator and the second SRS resource indicator indicates an SRS resource within one of the at least two SRS resource sets. ### Claim 2 (depends on 1) The base station of claim 1, wherein a first SRS resource set of the at least two SRS resource sets is associated with triggering the UE to transmit SRS resources using different antenna ports, and a second SRS resource set of the at least two SRS resource sets is associated with triggering the UE to transmit SRS resources using different beams. ### Claim 3 (depends on 1) The base station of claim 1, wherein a guard period is configured for one SRS resource set of the at least two SRS resource sets. ### Claim 4 A user equipment (UE), comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: receive a configuration comprising information to configure at least two sounding reference signal (SRS) resource sets for the UE for a codebook based transmission or a non-codebook based transmission; and receive a first SRS resource indicator and a second SRS resource indicator from a base unit for a physical uplink shared channel (PUSCH) transmission, wherein each of the first SRS resource indicator and the second SRS resource indicator indicates an SRS resource within one of the at least two SRS resource sets. ### Claim 5 (depends on 4) The UE of claim 4, wherein a first SRS resource set of the at least two SRS resource sets is associated with triggering the UE to transmit SRS resources using different antenna ports, and a second SRS resource set of the at least two SRS resource sets is associated with triggering the UE to transmit SRS resources using different beams. ### Claim 6 (depends on 4) The UE of claim 4, wherein a guard period is configured for one SRS resource set of the at least two SRS resource sets. ### Claim 7 A processor for wireless communication, comprising: at least one controller coupled with at least one memory and configured to cause the processor to: receive a configuration comprising information to configure at least two sounding reference signal (SRS) resource sets for the processor for a codebook based transmission or a non-codebook based transmission; and receive a first SRS resource indicator and a second SRS resource indicator from a base unit for a physical uplink shared channel (PUSCH) transmission, wherein each of the first SRS resource indicator and the second SRS resource indicator indicates an SRS resource within one of the at least two SRS resource sets. ### Claim 8 (depends on 7) The processor of claim 7, wherein a first SRS resource set of the at least two SRS resource sets is associated with triggering the processor to transmit SRS resources using different antenna ports, and a second SRS resource set of the at least two SRS resource sets is associated with triggering the processor to transmit SRS resources using different beams. ### Claim 9 (depends on 7) The processor of claim 7, wherein a guard period is configured for one SRS resource set of the at least two SRS resource sets. ### Claim 10 A method performed by a user equipment (UE), the method comprising: receiving a configuration comprising information to configure at least two sounding reference signal (SRS) resource sets for the UE for a codebook based transmission or a non-codebook based transmission; and receiving a first SRS resource indicator and a second SRS resource indicator from a base unit for a physical uplink shared channel (PUSCH) transmission, wherein each of the first SRS resource indicator and the second SRS resource indicator indicates an SRS resource within one of the at least two SRS resource sets. ### Claim 11 (depends on 10) The method of claim 10, wherein a first SRS resource set of the at least two SRS resource sets is associated with triggering the UE to transmit SRS resources using different antenna ports, and a second SRS resource set of the at least two SRS resource sets is associated with triggering the UE to transmit SRS resources using different beams. ### Claim 12 (depends on 10) The method of claim 10, wherein a guard period is configured for one SRS resource set of the at least two SRS resource sets.