# US 2025/0097969 A1 · Systems and methods for handling sidelink feedback signaling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0097969 A1 - Document ID: US20250097969A1 - Status: Published application - Kind: A1 - Application number: 18/970,251 - Filed: 2024-12-05 - Published: 2025-03-20 - Earliest claimed: 2019-10-10 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Hui Guo; Sudhir Kumar Baghel; Tien Viet Nguyen - Web page: https://patentgrep.com/patent/US20250097969A1 ## CPC - H04L 1/1854: {Scheduling and prioritising arrangements} - H04W 72/56: based on priority criteria - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 2001/0097: {Relays} - H04W 72/569: {of the traffic information} - H04W 92/18: between terminal devices - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Techniques for handling sidelink feedback signaling in situations where collisions would otherwise be experienced in a network communication link are shown and described. For example, sidelink feedback signaling handling techniques may provide for collision handling when sidelink HARQ is to be simultaneously transmitted with network communication radio interface uplink channel information (e.g., Uu HARQ, SR, CSI, etc.) on one or more Uu channel (e.g., PUCCH, PUSCH, etc.). In operation of sidelink feedback handling, a transmitter or intermediary UE of a sidelink communication link may decide whether and how to forward the sidelink HARQ to a corresponding base station. Other aspects and features are also claimed and described. ## Claims ### Claim 1 An apparatus configured for wireless communication, comprising: a processing system that includes one or more processors and one or more memories coupled with the one or more processors, the processing system configured to cause the apparatus to: receive, by a user equipment (UE) operating as a transmitter UE of a sidelink communication link receiving sidelink feedback signaling from a UE operating as a receiver UE of the sidelink communication link; and implement, by the transmitter UE, sidelink feedback signaling processing avoiding an impending collision with respect to forwarding the sidelink feedback signaling to a base station over a network communication link and other uplink signaling to the base station over the network communication link, wherein the processing system configured to implement sidelink feedback signaling processing causes the apparatus to: determine to drop or communicate the sidelink feedback signaling based at least in part on a sidelink data retransmission priority of a sidelink transmission. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the processing system configured to implement sidelink feedback signaling processing causes the apparatus to: identify an overlap in an allocation of at least a time or frequency resource for use by the sidelink feedback signaling and the other uplink signaling as the impending collision with respect to forwarding the sidelink feedback signaling. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the processing system configured to implement sidelink feedback signaling processing causes the apparatus to: determine to drop or communicate the sidelink feedback signaling based at least in part on a priority based sidelink feedback signaling rule implemented by the transmitter UE. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the processing system configured to implement sidelink feedback signaling processing causes the apparatus to: determine to drop or communicate the sidelink feedback signaling based at least in part on a priority between the sidelink feedback signaling and at least a portion of the other uplink signaling. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the priority between the sidelink feedback signaling and the at least a portion of the other uplink signaling is based at least in part on an index value associated with the other uplink signaling. ### Claim 6 (depends on 4) The apparatus of claim 4, wherein the priority between the sidelink feedback signaling and the at least a portion of the other uplink signaling is based at least in part on a priority value associated with the sidelink feedback signaling. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the priority value associated with the sidelink feedback signaling comprises a priority value of a sidelink transmission corresponding to the sidelink feedback signaling. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the priority value of the sidelink transmission is based at least in part on a sidelink transmission priority selected from a group consisting of: a transmit block priority provided for a transmit block of the sidelink transmission; and a transmit block size priority of a transmit block of the sidelink transmission. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the sidelink feedback signaling comprises a sidelink hybrid automatic repeat request (HARQ) response. ### Claim 10 A method of wireless communication, comprising: receiving, by a user equipment (UE) operating as a transmitter UE of a sidelink communication link, sidelink feedback signaling from a UE operating as a receiver UE of the sidelink communication link; and implementing, by the transmitter UE, sidelink feedback signaling processing avoiding an impending collision with respect to forwarding the sidelink feedback signaling to a base station over a network communication link and other uplink signaling to the base station over the network communication link, wherein the implementing sidelink feedback signaling processing comprises: determining to drop or communicate the sidelink feedback signaling based at least in part on a sidelink data retransmission priority of a sidelink transmission. ### Claim 11 (depends on 10) The method of claim 10, wherein the implementing sidelink feedback signaling processing comprises: identifying an overlap in an allocation of at least a time or frequency resource for use by the sidelink feedback signaling and the other uplink signaling as the impending collision with respect to forwarding the sidelink feedback signaling. ### Claim 12 (depends on 10) The method of claim 10, wherein the implementing sidelink feedback signaling processing comprises: determining to drop or communicate the sidelink feedback signaling based at least in part on a priority based sidelink feedback signaling rule implemented by the transmitter UE. ### Claim 13 (depends on 10) The method of claim 10, wherein the implementing sidelink feedback signaling processing comprises: determining to drop or communicate the sidelink feedback signaling based at least in part on a priority between the sidelink feedback signaling and at least a portion of the other uplink signaling. ### Claim 14 (depends on 13) The method of claim 13, wherein the priority between the sidelink feedback signaling and the at least a portion of the other uplink signaling is based at least in part on an index value associated with the other uplink signaling. ### Claim 15 (depends on 13) The method of claim 13, wherein the priority between the sidelink feedback signaling and the at least a portion of the other uplink signaling is based at least in part on a priority value associated with the sidelink feedback signaling. ### Claim 16 (depends on 15) The method of claim 15, wherein the priority value associated with the sidelink feedback signaling comprises a priority value of a sidelink transmission corresponding to the sidelink feedback signaling. ### Claim 17 (depends on 16) The method of claim 16, wherein the priority value of the sidelink transmission is based at least in part on a sidelink transmission priority selected from a group consisting of: a transmit block priority provided for a transmit block of the sidelink transmission; and a transmit block size priority of a transmit block of the sidelink transmission. ### Claim 18 (depends on 10) The method of claim 10, wherein the sidelink feedback signaling comprises a sidelink hybrid automatic repeat request (HARQ) response. ### Claim 19 An apparatus configured for wireless communication, comprising: a processing system that includes one or more processors and one or more memories coupled with the one or more processors, the processing system configured to cause the apparatus to: transmit, to a user equipment (UE) operating as a transmitter UE of a sidelink communication link with a UE operating as a receiver UE, signaling indicating a rule for the transmitter UE to determine whether to drop or communicate a sidelink feedback signaling from the receiver UE based at least in part on a sidelink data retransmission priority of a sidelink transmission, wherein the rule is based at least in part on avoiding an impending collision with respect to forwarding the sidelink feedback signaling to a base station over a network communication link and other uplink signaling to the base station over the network communication link; and receive, from the transmitter UE, the sidelink feedback signaling or the other uplink signaling based at least in part on the rule. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the rule indicates for the transmitter UE to: identify an overlap in an allocation of at least a time or frequency resource for use by the sidelink feedback signaling and the other uplink signaling as the impending collision with respect to forwarding the sidelink feedback signaling. ### Claim 21 (depends on 19) The apparatus of claim 19, wherein the rule indicates for the transmitter UE to: determine to drop or communicate the sidelink feedback signaling based at least in part on a priority based sidelink feedback signaling rule implemented by the transmitter UE. ### Claim 22 (depends on 19) The apparatus of claim 19, wherein the rule indicates for the transmitter UE to: determine to drop or communicate the sidelink feedback signaling based at least in part on a priority between the sidelink feedback signaling and at least a portion of the other uplink signaling. ### Claim 23 (depends on 22) The apparatus of claim 22, wherein the priority between the sidelink feedback signaling and the at least a portion of the other uplink signaling is based at least in part on an index value associated with the other uplink signaling. ### Claim 24 (depends on 22) The apparatus of claim 22, wherein the priority between the sidelink feedback signaling and the at least a portion of the other uplink signaling is based at least in part on a priority value associated with the sidelink feedback signaling. ### Claim 25 (depends on 24) The apparatus of claim 24, wherein the priority value associated with the sidelink feedback signaling comprises a priority value of a sidelink transmission corresponding to the sidelink feedback signaling. ### Claim 26 (depends on 25) The apparatus of claim 25, wherein the priority value of the sidelink transmission is based at least in part on a sidelink transmission priority selected from a group consisting of: a transmit block priority provided for a transmit block of the sidelink transmission; and a transmit block size priority of a transmit block of the sidelink transmission. ### Claim 27 (depends on 22) The apparatus of claim 22, wherein the sidelink feedback signaling comprises a sidelink hybrid automatic repeat request (HARQ) response. ### Claim 28 A method for wireless communication, comprising: transmitting, to a user equipment (UE) operating as a transmitter UE of a sidelink communication link with a UE operating as a receiver UE, signaling indicating a rule for the transmitter UE to determine whether to drop or communicate a sidelink feedback signaling from the receiver UE based at least in part on a sidelink data retransmission priority of a sidelink transmission, wherein the rule is based at least in part on avoiding an impending collision with respect to forwarding the sidelink feedback signaling to a base station over a network communication link and other uplink signaling to the base station over the network communication link; and receiving, from the transmitter UE, the sidelink feedback signaling or the other uplink signaling based at least in part on the rule. ### Claim 29 (depends on 28) The method of claim 28, wherein the rule indicates: identifying an overlap in an allocation of at least a time or frequency resource for use by the sidelink feedback signaling and the other uplink signaling as the impending collision with respect to forwarding the sidelink feedback signaling. ### Claim 30 (depends on 28) The method of claim 28, wherein the rule indicates: determining to drop or communicate the sidelink feedback signaling based at least in part on a priority based sidelink feedback signaling rule implemented by the transmitter UE.