# US 12,113,738 B2 · Apparatus and method in wireless communication system and computer readable storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,738 B2 - Document ID: US12113738B2 - Status: Granted - Kind: B2 - Application number: 18/509,368 - Filed: 2023-11-15 - Published: 2024-03-07 - Granted: 2024-10-08 - Earliest claimed: 2017-08-09 - Assignees: Sony Group Corporation - Applicants: Sony Group Corporation - Inventors: Jin Xu; Dongru Li; Hang Yang; Xiaofeng Tao; Jianfei Cao - Web page: https://patentgrep.com/patent/US12113738B2 ## CPC - 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 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04B 7/06: at the transmitting station - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/04: Wireless resource allocation - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An apparatus and method in a wireless communication system and a computer readable storage medium. The apparatus comprises a processing circuit, which is configured to: configure a sounding reference signal (SRS) mapping structure for a user equipment on the basis of at least the number of antenna ports of the user equipment and the number of transmitting beams and/or receiving beams to be scanned; and notify the user equipment of the SRS mapping structure, wherein the SRS mapping structure at least comprises SRS resource settings for achieving uplink beam management and channel state information (CSI) acquisition at the same time, thereby reducing the system time delay and improving the uplink resource utilization rate. ## Claims ### Claim 1 A base station in a wireless communication system, the base station comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least: generate a sounding reference signal (SRS) configuration message for a user equipment to transmit SRS to the base station on corresponding time-frequency resources, wherein the SRS configuration message indicates a starting position of each of a plurality of SRS resources, a number of orthogonal frequency division multiplex (OFDM) symbols occupied by the each of the plurality of SRS resources, and information of SRS frequency hopping, and wherein a comb offset for an SRS of the plurality of SRS resources is set to be an integer larger than 2 and smaller than a first value and included in the SRS configuration message, the SRS is to be transmitted by the user equipment on every first value of subcarriers. ### Claim 2 (depends on 1) The base station according to claim 1, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least set the first value as 6 and the comb offset as 5. ### Claim 3 (depends on 1) The base station according to claim 1, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least map each of the plurality of SRS resources on any symbol of a slot. ### Claim 4 (depends on 1) The base station according to claim 1, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least set a first number of ports of a SRS resource for beam management and set a second number of ports of a SRS resource for channel state information (CSI) acquisition, wherein the first number and the second number is different. ### Claim 5 (depends on 4) The base station according to claim 4, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least: set the second number of ports of the SRS resource for CSI acquisition same as the number of antenna ports supported by the user equipment, and set the first number of ports of the SRS resource for beam management as 1. ### Claim 6 (depends on 1) The base station according to claim 1, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least determine the number of antenna ports supported by the user equipment, and set a number of ports of each SRS resource of the plurality of SRS resources according to a usage of the SRS resource. ### Claim 7 (depends on 1) The base station according to claim 1, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least include indication of both intra-slot frequency hopping and inter-slot frequency hopping in the SRS configuration message. ### Claim 8 (depends on 1) The base station according to claim 1, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least set at least one of the plurality of SRS resources on the same resources of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a demodulation reference signal (DMRS). ### Claim 9 (depends on 1) The base station according to claim 1, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the base station to at least set the first value based on expected number of receptions. ### Claim 10 A user equipment in a wireless communication system, the user equipment comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user equipment to at least: receive a sounding reference signal (SRS) configuration message form a base station, and transmit SRS to the base station on corresponding time-frequency resources, wherein the SRS configuration message indicates a starting position of each of a plurality of SRS resources, a number of orthogonal frequency division multiplex (OFDM) symbols occupied by the each of the plurality of SRS resources, information of SRS frequency hopping, wherein a comb offset for a SRS of the plurality of SRS resources is set by the base station, and the comb offset is an integer larger than 2 and smaller than a first value, wherein the SRS is configured to be transmitted on every first value of subcarriers. ### Claim 11 (depends on 10) The user equipment according to claim 10, wherein the first value is 6 and the comb offset is 5. ### Claim 12 (depends on 10) The user equipment according to claim 10, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user equipment to at least determine each of the plurality of SRS resources on any symbol of a slot according to the SRS configuration message. ### Claim 13 (depends on 10) The user equipment according to claim 10, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user equipment to at least determine a first number of ports of a SRS resource for beam management and a second number of ports of a SRS resource for channel state information (CSI) acquisition according to the SRS configuration message, wherein the first number and the second number is different. ### Claim 14 (depends on 13) The user equipment according to claim 13, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user equipment to at least according to the SRS configuration message, determine the second number of ports of the SRS resource for CSI acquisition same as the number of antenna ports supported by the user equipment, and determine the first number of ports of the SRS resource for beam management as 1. ### Claim 15 (depends on 10) The user equipment according to claim 10, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user equipment to at least provide the number of antenna ports supported by the user equipment to the base station, wherein a number of ports of each SRS resource of the plurality of SRS resources is set by the base station in the SRS configuration message according to a usage of the SRS resource. ### Claim 16 (depends on 10) The user equipment according to claim 10, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user equipment to at least acquire indication of both intra-slot frequency hopping and inter-slot frequency hopping in the SRS configuration message. ### Claim 17 (depends on 10) The user equipment according to claim 10, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user equipment to at least determine at least one of the plurality of SRS resources on the same resources of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a demodulation reference signal (DMRS), and drop the SRS on the same resources of the PUSCH, the PUCCH or the DMRS. ### Claim 18 (depends on 10) The user equipment according to claim 10, wherein the first value was set by the base station based on expected number of receptions. ### Claim 19 A method of a base station, comprising: generating a sounding reference signal (SRS) configuration message for a user equipment to transmit SRS to the base station on corresponding time-frequency resources, wherein the SRS configuration message indicates a starting position of each of a plurality of SRS resources, a number of orthogonal frequency division multiplex (OFDM) symbols occupied by the each of the plurality of SRS resources, and information of SRS frequency hopping, wherein a comb offset for an SRS of the plurality of SRS resources is set to be an integer larger than 2 and smaller than a first value and included in the SRS configuration message, the SRS is to be transmitted by the user equipment on every first value of subcarriers.