# US 12,604,301 B2 · User equipment and resource monitoring method using a re-evaluation and pre-emption checking procedure for determining a subset of resources in a slot for sidelink communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,301 B2 - Document ID: US12604301B2 - Status: Granted - Kind: B2 - Application number: 18/371,690 - Filed: 2023-09-22 - Published: 2024-01-11 - Granted: 2026-04-14 - Earliest claimed: 2021-04-05 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Huei-Ming Lin - Web page: https://patentgrep.com/patent/US12604301B2 ## CPC - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/25: between terminals via a wireless link, e.g. sidelink - H04W 72/40: Resource management for direct mode communication, e.g. D2D or sidelink - H04B 17/382: for resource allocation, admission control or handover - H04W 28/20: Negotiating bandwidth - H04W 72/541: using the level of interference - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract A user equipment (UE) and a resource monitoring method in sidelink communication are disclosed. The resource monitoring method in sidelink communication by the UE includes being triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, wherein the first resource selection window is within a set of candidate slots. ## Claims ### Claim 1 A resource monitoring method in sidelink communication by a user equipment (UE), comprising: being triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, wherein the first resource selection window is within a set of candidate slots; and sensing slots of a sidelink resource pool within a time interval contiguously from a slot (m−31) to a slot (m−T3−Tproc,0) to obtain sensing results as a part of a contiguous partial sensing, where the UE is triggered to determine the subset of resources in a slot (n) as the part of the re-evaluation and pre-emption checking procedure and m is a smallest candidate resource slot index after slot (n+T3). ### Claim 2 (depends on 1) The method of claim 1, wherein the set of candidate slots of a length Y starting from a slot (ty0) and/or ending at a slot (ty0+Y−1) is used in an initial resource selection. ### Claim 3 (depends on 1) The method of claim 1, wherein the first resource selection window is a remaining portion of the set of candidate slots. ### Claim 4 (depends on 1) The method of claim 1, wherein the time interval is within the set of candidate slots. ### Claim 5 (depends on 1) The method of claim 1, wherein the time interval is within the first resource selection window. ### Claim 6 (depends on 1) The method of claim 1, wherein the higher layer selects earliest resources or prioritize earlier resources within the subset of resources and/or the set of candidate slots for selection. ### Claim 7 (depends on 1) The method of claim 1, further comprising being triggered, by the higher layer, to determine the subset of resources in a second resource selection window as the part of the re-evaluation and pre-emption checking procedure. ### Claim 8 (depends on 7) The method of claim 7, wherein the second resource selection window exceeds an ending boundary of the set of candidate slots. ### Claim 9 (depends on 8) The method of claim 8, wherein the second resource selection window exceeds an ending boundary of the set of candidate slots for up to a slot ( m - T 3 - T proc , 0 SL + 31 ) . ### Claim 10 (depends on 9) The method of claim 9, wherein a starting of the second resource selection window is a slot (m−T3+T1), where T1 is to be selected by the UE between 0 and T proc , 1 SL . ### Claim 11 (depends on 9) The method of claim 9, wherein a number of slots for T proc , 0 SL is selected from a set of values [1, 1, 2, 4] depending on a configured subcarrier spacing (SCS) for a sidelink bandwidth part in which the sidelink resource pool is configured. ### Claim 12 (depends on 9) The method of claim 9, wherein for the second resource selection window, ty0+Y−1−m is smaller or equal to 20% of Y. ### Claim 13 A user equipment (UE), comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver; wherein the processor is configured to: be triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, and the first resource selection window is within a set of candidate slots; and sense slots of a sidelink resource pool within a time interval contiguously from a slot (m−31) to a slot (m−T3−Tproc,0) to obtain sensing results as a part of a contiguous partial sensing, where the UE is triggered to determine the subset of resources in a slot (n) as the part of the re-evaluation and pre-emption checking procedure and m is a smallest candidate resource slot index after slot (n+T3). ### Claim 14 (depends on 13) The UE of claim 13, wherein the set of candidate slots of a length Y starting from a slot (ty0) and/or ending at a slot (ty0+Y−1) is used in an initial resource selection. ### Claim 15 (depends on 13) The UE of claim 13, wherein the first resource selection window is a remaining portion of the set of candidate slots. ### Claim 16 (depends on 13) The UE of claim 13, wherein the time interval is within the set of candidate slots. ### Claim 17 (depends on 13) The UE of claim 13, wherein the time interval is within the first resource selection window. ### Claim 18 A non-transitory machine-readable storage medium having stored thereon instructions that, when executed by a computer, cause the computer to perform operations of: being triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, wherein the first resource selection window is within a set of candidate slots; and sensing slots of a sidelink resource pool within a time interval contiguously from a slot (m−31) to a slot (m−T3−Tproc,0) to obtain sensing results as a part of a contiguous partial sensing, where the UE is triggered to determine the subset of resources in a slot (n) as the part of the re-evaluation and pre-emption checking procedure and m is a smallest candidate resource slot index after slot (n+T3).