# US 12,003,989 B2 · Sidelink multi-port transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,989 B2 - Document ID: US12003989B2 - Status: Granted - Kind: B2 - Application number: 17/991,067 - Filed: 2022-11-21 - Published: 2023-03-30 - Granted: 2024-06-04 - Earliest claimed: 2019-11-07 - Assignees: Ofinno, LLC - Applicants: Ofinno, LLC - Inventors: Hyukjin Chae; Esmael Hejazi Dinan; Yunjung Yi; Kyungmin Park - Web page: https://patentgrep.com/patent/US12003989B2 ## CPC - H04W 24/08: Testing, {supervising or monitoring} using real traffic - 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 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 27/261: {Details of reference signals} - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/044: based on the type of the allocated resource - H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]} - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 48/12: using downlink control channel - H04W 72/20: Control channels or signalling for resource management - H04W 92/18: between terminal devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION ## Abstract A first wireless device receives, from a second wireless device and via a physical sidelink control channel (PSCCH), sidelink control information that includes a number of demodulation reference signal (DMRS) antenna ports and resource assignment of a physical shared channel (PSSCH) received in one or more first resources. The first wireless device determines a second reference signal received power (RSRP) of the PSSCH based on a measurement of a first RSRP of the PSSCH and at least one of: the number of DMRS antenna ports or measurement of a channel busy ratio (CBR). The first wireless device transmits, via one or more second resources selected based on the second RSRP and that are for transmission within a set of candidate resources, one or more transport blocks via the one or more second resources. ## Claims ### Claim 1 A method comprising: receiving, by a first wireless device from a second wireless device and via a physical sidelink control channel (PSCCH), sidelink control information comprising: a number of demodulation reference signal (DMRS) antenna ports; and resource assignment of a physical shared channel (PSSCH) received in one or more first resources; determining a second reference signal received power (RSRP) of the PSSCH based on a measurement of a first RSRP of the PSSCH and at least one of: the number of DMRS antenna ports; or measurement of a channel busy ratio (CBR); and transmitting, via one or more second resources selected based on the second RSRP and that are for transmission within a set of candidate resources, one or more transport blocks via the one or more second resources. ### Claim 2 (depends on 1) The method of claim 1, wherein the determining the second RSRP further comprises adding an offset to the first RSRP. ### Claim 3 (depends on 2) The method of claim 2, wherein the offset is based on the number of DMRS antenna ports. ### Claim 4 (depends on 3) The method of claim 3, wherein the offset is per the number of DMRS antenna ports and is indicated by a configuration message. ### Claim 5 (depends on 4) The method of claim 4, wherein the configuration message is received from: a base station via a radio resource control (RRC) message; or a system information block (SIB). ### Claim 6 (depends on 2) The method of claim 2, wherein the offset increases with the number of DMRS antenna ports. ### Claim 7 (depends on 2) The method of claim 2, wherein the offset is based on the CBR. ### Claim 8 (depends on 7) The method of claim 7, wherein the offset is per a range of the CBR and is indicated by: a base station via a radio resource control (RRC) message; or a system information block (SIB). ### Claim 9 (depends on 1) The method of claim 1, wherein the first RSRP is measured by linear average over power contributions of resource elements that carry DMRS transmitted in frequency resources indicated by the resource assignment of the PSSCH. ### Claim 10 A first wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the first wireless device to: receive, from a second wireless device and via a physical sidelink control channel (PSCCH), sidelink control information comprising: a number of demodulation reference signal (DMRS) antenna ports; and resource assignment of a physical shared channel (PSSCH) received in one or more first resources; measure a first reference signal power (RSRP) of the PSSCH; measure a channel busy ratio (CBR); determine a second RSRP of the PSSCH based on the measurement of the first RSRP of the PSSCH and at least one of: the number of DMRS antenna ports; or the measurement of the CBR; select one or more second resources based on the second RSRP; and transmit, via the one or more second resources selected and that are for transmission within a set of candidate resources, one or more transport blocks via the one or more second resources. ### Claim 11 (depends on 10) The first wireless device of claim 10, wherein the instructions, when executed by the one or more processors, further cause the first wireless device to add an offset to the first RSRP when determining the second RSRP. ### Claim 12 (depends on 11) The first wireless device of claim 11, wherein the offset is based on the number of DMRS antenna ports. ### Claim 13 (depends on 12) The first wireless device of claim 12, wherein the offset is per the number of DMRS antenna ports and is indicated by a configuration message. ### Claim 14 (depends on 13) The first wireless device of claim 13, wherein the instructions, when executed by the one or more processors, further cause the first wireless device to receive the configuration message from: a base station via a radio resource control (RRC) message; or a system information block (SIB). ### Claim 15 (depends on 11) The first wireless device of claim 11, wherein the offset increases with the number of DMRS antenna ports. ### Claim 16 (depends on 11) The first wireless device of claim 11, wherein the offset is based on the CBR. ### Claim 17 (depends on 16) The first wireless device of claim 16, wherein the offset is per a range of the CBR and is indicated by: a base station via a radio resource control (RRC) message; or a system information block (SIB). ### Claim 18 A system comprising: a second wireless device; and a first wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the first wireless device to: receive, from the second wireless device and via a physical sidelink control channel (PSCCH), sidelink control information comprising: a number of demodulation reference signal (DMRS) antenna ports; and resource assignment of a physical shared channel (PSSCH) received in one or more first resources; measure a first reference signal power (RSRP) of the PSSCH; measure a channel busy ratio (CBR); determine a second RSRP of the PSSCH based on the measurement of the first RSRP of the PSSCH and at least one of: the number of DMRS antenna ports; or the measurement of the CBR; select one or more second resources based on the second RSRP; and transmit, via the one or more second resources selected and that are for transmission within a set of candidate resources, one or more transport blocks via the one or more second resources.