# US 12,192,986 B2 · Communicating about sidelink resource availability without legacy user equipment interference > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,986 B2 - Document ID: US12192986B2 - Status: Granted - Kind: B2 - Application number: 17/444,528 - Filed: 2021-08-05 - Published: 2022-02-10 - Granted: 2025-01-07 - Earliest claimed: 2020-08-07 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Wei Yang; Seyedkianoush Hosseini; Tien Viet Nguyen; Gabi Sarkis - Web page: https://patentgrep.com/patent/US12192986B2 ## CPC - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04W 76/14: Direct-mode setup - H04W 28/26: Resource reservation - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/20: Control channels or signalling for resource management - H04W 72/25: between terminals via a wireless link, e.g. sidelink - H04W 72/569: {of the traffic information} - H04W 72/51: based on terminal or device properties - 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) ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may identify a set of resources for exchanging, with a second UE, resource availability information associated with a sidelink channel. The set of resources are not allocated to a legacy UE. Accordingly, the first UE may exchange, with the second UE and using the set of resources, the resource availability information associated with the sidelink channel. Alternatively, the legacy UE may receive, from the second UE, a communication on a sidelink channel and determine that the communication is associated with resource availability information for the sidelink channel Accordingly, the first UE may discard the communication based at least in part on the communication being associated with resource availability information for the sidelink channel. Numerous other aspects are provided. ## Claims ### Claim 1 An apparatus for wireless communication at a user equipment (UE), comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: encode sidelink control information (SCI) associated with a communication on a sidelink channel, wherein the SCI includes second stage SCI (SCI-2), wherein the communication is associated with resource availability information for the sidelink channel, and wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a destination identifier included in the SCI and associated with the communication; and transmit the SCI. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the communication includes at least one of a request for the resource availability information for the sidelink channel or a response including the resource availability information for the sidelink channel. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the destination identifier includes a specific identifier that is not associated with any legacy UE. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a message type field included in the SCI and associated with the communication. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the message type field comprises a bit field. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a format of the SCI. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the SCI includes a priority indicator that indicates a measure of priority for the communication. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the SCI is transmitted via physical sidelink shared channel (PSSCH). ### Claim 9 An apparatus for wireless communication at a user equipment (UE), comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: receive encoded sidelink control information (SCI) associated with a communication on a sidelink channel, wherein the SCI includes second stage SCI (SCI-2), wherein the communication is associated with resource availability information for the sidelink channel, and wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a destination identifier included in the SCI and associated with the communication; and skip decoding of the communication. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the destination identifier includes a specific identifier that is not associated with any legacy UE. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a message type field included in the SCI and associated with the communication. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the message type field comprises a bit field. ### Claim 13 (depends on 9) The apparatus of claim 9, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a format of the SCI. ### Claim 14 (depends on 9) The apparatus of claim 9, wherein the SCI includes a priority indicator that indicates a measure of priority for the communication. ### Claim 15 (depends on 9) The apparatus of claim 9, wherein the SCI is received via physical sidelink shared channel (PSSCH). ### Claim 16 A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: encode sidelink control information (SCI) associated with a communication on a sidelink channel, wherein the SCI includes second stage SCI (SCI-2), wherein the communication is associated with resource availability information for the sidelink channel, and wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a destination identifier included in the SCI and associated with the communication; and transmit the SCI. ### Claim 17 (depends on 16) The non-transitory computer-readable medium of claim 16, wherein the communication includes at least one of a request for the resource availability information for the sidelink channel or a response including the resource availability information for the sidelink channel. ### Claim 18 (depends on 16) The non-transitory computer-readable medium of claim 16, wherein the destination identifier includes a specific identifier that is not associated with any legacy UE. ### Claim 19 (depends on 16) The non-transitory computer-readable medium of claim 16, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a message type field included in the SCI and associated with the communication. ### Claim 20 (depends on 19) The non-transitory computer-readable medium of claim 19, wherein the message type field comprises a bit field. ### Claim 21 (depends on 16) The non-transitory computer-readable medium of claim 16, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a format of the SCI. ### Claim 22 (depends on 16) The non-transitory computer-readable medium of claim 16, wherein the SCI includes a priority indicator that indicates a measure of priority for the communication. ### Claim 23 A method of wireless communication performed by a user equipment (UE), comprising: encoding sidelink control information (SCI) associated with a communication on a sidelink channel, wherein the SCI includes second stage SCI (SCI-2), wherein the communication is associated with resource availability information for the sidelink channel, and wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a destination identifier included in the SCI and associated with the communication; and transmitting the SCI. ### Claim 24 (depends on 23) The method of claim 23, wherein the communication includes at least one of a request for the resource availability information for the sidelink channel or a response including the resource availability information for the sidelink channel. ### Claim 25 (depends on 23) The method of claim 23, wherein the destination identifier includes a specific identifier that is not associated with any legacy UE. ### Claim 26 (depends on 23) The method of claim 23, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a message type field included in the SCI and associated with the communication. ### Claim 27 (depends on 26) The method of claim 26, wherein the message type field comprises a bit field. ### Claim 28 (depends on 23) The method of claim 23, wherein the SCI indicates that the communication is not intended for any legacy UE based at least in part on a format of the SCI. ### Claim 29 (depends on 23) The method of claim 23, wherein the SCI includes a priority indicator that indicates a measure of priority for the communication. ### Claim 30 (depends on 23) The method of claim 23, wherein the SCI is transmitted via physical sidelink shared channel (PSSCH).