# US 12,004,126 B2 · Methods and devices of assigning resource for sidelink communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,126 B2 - Document ID: US12004126B2 - Status: Granted - Kind: B2 - Application number: 17/711,717 - Filed: 2022-04-01 - Published: 2022-07-21 - Granted: 2024-06-04 - Earliest claimed: 2019-02-01 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Min Wu; Feifei Sun; Miao Zhou; Yi Wang - Web page: https://patentgrep.com/patent/US12004126B2 ## CPC - H04W 72/04: Wireless resource allocation - H04B 17/318: Received signal strength - H04B 17/328: {Reference signal received power [RSRP]; Reference signal received quality [RSRQ]} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/50: Allocation or scheduling criteria for wireless resources - H04W 72/542: using measured or perceived quality - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W 84/047: {using dedicated repeater stations} - H04W 88/04: adapted for relaying to or from another terminal or user - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A resource assignment method performed by a user equipment (UE) is provided. The resource assignment method includes determining a target resource set for data transmission at a first time unit, selecting the earliest resource in time from the target resource set, wherein the selected resource is located at a second time unit, determining, at the second time unit and/or between the first time unit and the second time unit, whether the selected resource at the second time unit is available, and determining whether data is transmitted on the selected resource at the second time unit based on the result of the determination. ## Claims ### Claim 1 A method performed by a terminal in a wireless communication system, the method comprising following steps of: i) initializing a set of resources with all candidate resources; ii) excluding a resource from the set of resources based on a measured reference signal received power (RSRP) being higher than a threshold; iii) in case that a number of remaining resources in the set of resources is smaller than a predetermined value, increasing the threshold and performing the step i); and iv) identifying a resource for re-evaluation based on the set of resources. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving, from a base station, configuration information on a resource pool for sidelink communication, wherein the set of resources with all candidate resources is initialized based on the configuration information, wherein the predetermined value is determined based on information on a portion of resources in the set of resources over the all candidate resources, and wherein the information is determined based on a priority of a transmission associated with the terminal. ### Claim 3 (depends on 2) The method of claim 2, wherein the transmission includes at least one of a physical sidelink shared channel (PSSCH) transmission or a PSCCH transmission. ### Claim 4 (depends on 3) The method of claim 3, wherein the RSRP is measured based on a received physical sidelink control channel (PSCCH), wherein the PSSCH indicates the excluded resource, and wherein the threshold is determined based on the priority of the transmission associated with the terminal and a priority indicated by the received PSSCH. ### Claim 5 (depends on 3) The method of claim 3, further comprising: in case that the identified resource is to be available based on the re-evaluation, performing the transmission on the identified resource. ### Claim 6 (depends on 3) The method of claim 3, further comprising: in case that the identified resource is to be unavailable based on the re-evaluation, replacing the identified resource with another resource selected from the set of resources. ### Claim 7 A terminal in a wireless communication system, the terminal comprising: a transceiver; and a processor configured to: i) initialize a set of resources with all candidate resources, ii) exclude a resource from the set of resources based on a measured reference signal received power (RSRP) being higher than a threshold, iii) in case that a number of remaining resources in the set of resources is smaller than a predetermined value, increase the threshold and perform the step i), and iv) identify a resource for re-evaluation based on the set of resources. ### Claim 8 (depends on 7) The terminal of claim 7, wherein the processor is further configured to control the transceiver to receive, from a base station, configuration information on a resource pool for sidelink communication, and initialize the set of resources with all candidate resources based on the configuration information, wherein the predetermined value is determined based on information on a portion of resources in the set of resources over the all candidate resources, and wherein the information is determined based on a priority of a transmission associated with the terminal. ### Claim 9 (depends on 8) The terminal of claim 8, wherein the transmission includes at least one of a physical sidelink shared channel (PSSCH) transmission or a PSCCH transmission. ### Claim 10 (depends on 9) The terminal of claim 9, wherein the measured RSRP is based on a received physical sidelink control channel (PSCCH), wherein the PSCCH indicates the excluded resource, and wherein the threshold is determined based on the priority of the transmission associated with the terminal and a priority indicated by the received PSSCH. ### Claim 11 (depends on 9) The terminal of claim 9, wherein, in case that the identified resource is to be available based on the re-evaluation, the processor is further configured to perform the transmission on the identified resource. ### Claim 12 (depends on 9) The terminal of claim 9, wherein, in case that the identified resource is to be unavailable based on the re-evaluation, the processor is further configured to replace the identified resource with another resource selected from the set of the resources.