# US 11,910,434 B2 · Sidelink channel access timeline techniques for wireless communications systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,434 B2 - Document ID: US11910434B2 - Status: Granted - Kind: B2 - Application number: 17/230,974 - Filed: 2021-04-14 - Published: 2022-10-20 - Granted: 2024-02-20 - Earliest claimed: 2021-04-14 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Ahmed Attia Abotabl; Muhammad Sayed Khairy Abdelghaffar; Abdelrahman Mohamed Ahmed Mohamed Ibrahim; Krishna Kiran Mukkavilli - Web page: https://patentgrep.com/patent/US11910434B2 ## CPC - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W 76/14: Direct-mode setup - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04W 8/24: Transfer of terminal data - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/56: based on priority criteria - H04W 74/002: {Transmission of channel access control information} - H04W 80/02: Data link layer protocols - H04W 72/20: Control channels or signalling for resource management - H04W 88/02: Terminal devices - 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) ## Abstract Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may receive control signaling indicating a configuration for performing channel sensing. The configuration may include one or more parameters corresponding to a processing time associated with the channel sensing. The UE may adjust the processing time associated with the channel sensing based on the one or more parameters and a full duplex capability of the first UE. The UE may transmit, using a first set of resources, a sidelink message based on the adjusted processing time. In some examples, the UE may transmit a first data message associated with a first priority level and perform channel sensing for a second data message associated with a second priority level that is higher than the first priority level. The UE may drop the first data message, skip an interference cancellation, or a combination thereof. ## Claims ### Claim 1 A method for wireless communications at a first user equipment (UE), comprising: receiving control signaling indicating a configuration for performing channel sensing, the configuration comprising one or more parameters corresponding to a processing time associated with the channel sensing that occurs after a sensing window associated with the channel sensing and before a resource selection trigger; adjusting the processing time associated with the channel sensing based at least in part on the one or more parameters and a full duplex capability of the first UE; and transmitting, to a second UE using a first set of resources, a sidelink message based at least in part on the adjusted processing time. ### Claim 2 (depends on 1) The method of claim 1, wherein adjusting the processing time comprises: increasing a first duration of the processing time associated with a half-duplex capability to a second duration for the processing time associated with the full duplex capability of the first UE, wherein the one or more parameters indicate the second duration. ### Claim 3 (depends on 2) The method of claim 2, further comprising: adjusting a beginning of a resource selection window based at least in part on increasing the first duration to the second duration. ### Claim 4 (depends on 1) The method of claim 1, wherein adjusting the processing time comprises: reducing a duration of the sensing window associated with the channel sensing based at least in part on the full duplex capability of the first UE; and increasing a first duration for the processing time associated with a half-duplex capability to a second duration for the processing time associated with the full duplex capability of the first UE, wherein the one or more parameters indicate the second duration. ### Claim 5 (depends on 1) The method of claim 1, wherein the received control signaling comprises a radio resource control message, a downlink control information message, a medium access control (MAC) control element (CE) message, or any combination thereof. ### Claim 6 (depends on 1) The method of claim 1, wherein the one or more parameters comprise a first parameter indicating a first duration for the processing time and a second parameter indicating a second duration for the processing time, the first duration corresponding to a first interference cancellation capability of the first UE and the second duration corresponding to a second interference cancellation capability of the first UE. ### Claim 7 (depends on 6) The method of claim 6, further comprising: adjusting the processing time to the first duration based at least in part on the first UE operating in a half-duplex mode, the second duration based at least in part on the first UE operating in a full duplex mode, or a combination thereof. ### Claim 8 (depends on 1) The method of claim 1, further comprising: monitoring the sensing window using the full duplex capability of the first UE for a first duration; and performing an interference cancellation for the channel sensing during the adjusted processing time based at least in part on monitoring the sensing window using the full duplex capability of the first UE. ### Claim 9 (depends on 1) The method of claim 1, further comprising: performing the channel sensing using the adjusted processing time. ### Claim 10 (depends on 9) The method of claim 9, further comprising: selecting the first set of resources based on a result of the channel sensing, wherein transmitting the sidelink message is based at least in part on the selected first set of resources. ### Claim 11 An apparatus for wireless communications at a first user equipment (UE), comprising: one or more processors; and one or more memories coupled with the one or more processors, the one or more processors configured to cause the first UE to: receive control signaling indicating a configuration for performing channel sensing, the configuration comprising one or more parameters corresponding to a processing time associated with the channel sensing that occurs after a sensing window associated with the channel sensing and before a resource selection trigger; adjust the processing time associated with the channel sensing based at least in part on the one or more parameters and a full duplex capability of the first UE; and transmit, to a second UE using a first set of resources, a sidelink message based at least in part on the adjusted processing time. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein, to adjust the processing time, the one or more processors are configured to cause the first UE to: increase a first duration of the processing time associated with a half-duplex capability to a second duration for the processing time associated with the full duplex capability of the first UE, wherein the one or more parameters indicate the second duration. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the one or more processors are further configured to cause the first UE to: adjust a beginning of a resource selection window based at least in part on the increased first duration. ### Claim 14 (depends on 11) The apparatus of claim 11, wherein, to adjust the processing time, the one or more processors are configured to cause the first UE to: reduce a duration of the sensing window associated with the channel sensing based at least in part on the full duplex capability of the first UE; and increase a first duration for the processing time associated with a half-duplex capability to a second duration for the processing time associated with the full duplex capability of the first UE, wherein the one or more parameters indicate the second duration. ### Claim 15 (depends on 11) The apparatus of claim 11, wherein the received control signaling comprises a radio resource control message, a downlink control information message, a medium access control (MAC) control element (CE) message, or any combination thereof. ### Claim 16 (depends on 11) The apparatus of claim 11, wherein the one or more parameters comprise a first parameter indicating a first duration for the processing time and a second parameter indicating a second duration for the processing time, the first duration corresponding to a first interference cancellation capability of the first UE and the second duration corresponding to a second interference cancellation capability of the first UE. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the one or more processors are further configured to cause the first UE to: adjust the processing time to the first duration based at least in part on a half-duplex mode of the first UE, the second duration based at least in part on a full duplex mode of the first UE, or a combination thereof. ### Claim 18 (depends on 11) The apparatus of claim 11, wherein the one or more processors are further configured to cause the first UE to: monitor the sensing window using the full duplex capability of the first UE for a first duration; and perform an interference cancellation for the channel sensing during the adjusted processing time based at least in part on the sensing window monitored using the full duplex capability of the first UE. ### Claim 19 (depends on 11) The apparatus of claim 11, wherein the one or more processors are further configured to cause the first UE to: perform the channel sensing using the adjusted processing time. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the one or more processors are further configured to cause the first UE to: select the first set of resources based on a result of the channel sensing, wherein the transmitted sidelink message is based at least in part on the selected first set of resources. ### Claim 21 A non-transitory computer-readable medium storing code for wireless communications at a first user equipment (UE), the code comprising instructions executable by one or more processors to cause the first UE to: receive control signaling indicating a configuration for performing channel sensing, the configuration comprising one or more parameters corresponding to a processing time associated with the channel sensing that occurs after a sensing window associated with the channel sensing and before a resource selection trigger; adjust the processing time associated with the channel sensing based at least in part on the one or more parameters and a full duplex capability of the first UE; and transmit, to a second UE using a first set of resources, a sidelink message based at least in part on the adjusted processing time. ### Claim 22 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions to adjust the processing time are further executable by the one or more processors to cause the first UE to: increase a first duration of the processing time associated with a half-duplex capability to a second duration for the processing time associated with the full duplex capability of the first UE, wherein the one or more parameters indicate the second duration. ### Claim 23 (depends on 22) The non-transitory computer-readable medium of claim 22, wherein the instructions are further executable by the one or more processors to cause the first UE to: adjust a beginning of a resource selection window based at least in part on increasing the first duration to the second duration. ### Claim 24 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions to adjust the processing time are further executable by the one or more processors to cause the first UE to: reduce a duration of the sensing window associated with the channel sensing based at least in part on the full duplex capability of the first UE; and increase a first duration for the processing time associated with a half-duplex capability to a second duration for the processing time associated with the full duplex capability of the first UE, wherein the one or more parameters indicate the second duration. ### Claim 25 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the received control signaling comprises a radio resource control message, a downlink control information message, a medium access control (MAC) control element (CE) message, or any combination thereof. ### Claim 26 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the one or more parameters comprise a first parameter indicating a first duration for the processing time and a second parameter indicating a second duration for the processing time, the first duration corresponding to a first interference cancellation capability of the first UE and the second duration corresponding to a second interference cancellation capability of the first UE. ### Claim 27 (depends on 26) The non-transitory computer-readable medium of claim 26, wherein the instructions are further executable by the one or more processors to cause the first UE to: adjust the processing time to the first duration based at least in part on the first UE operating in a half-duplex mode, the second duration based at least in part on the first UE operating in a full duplex mode, or a combination thereof. ### Claim 28 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions are further executable by the one or more processors to cause the first UE to: monitor the sensing window using the full duplex capability of the first UE for a first duration; and perform an interference cancellation for the channel sensing during the adjusted processing time based at least in part on monitoring the sensing window using the full duplex capability of the first UE. ### Claim 29 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions are further executable by the one or more processors to cause the first UE to: perform the channel sensing using the adjusted processing time. ### Claim 30 An apparatus for wireless communications at a first user equipment (UE), comprising: means for receiving control signaling indicating a configuration for performing channel sensing, the configuration comprising one or more parameters corresponding to a processing time associated with the channel sensing that occurs after a sensing window associated with the channel sensing and before a resource selection trigger; means for adjusting the processing time associated with the channel sensing based at least in part on the one or more parameters and a full duplex capability of the first UE; and means for transmitting, to a second UE using a first set of resources, a sidelink message based at least in part on the adjusted processing time.