Transmitting resource collision indication on sidelink feedback channel
地域：
CA
CA San Diego
摘要
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may identify a collision on a victim resource based at least in part on an aggressor reservation transmitted by a second UE. The first UE may transmit, to the second UE via a sidelink feedback channel, a resource collision indication that indicates at least one of the victim resource or the aggressor reservation, wherein the resource collision indication is multiplexed on one or more resources that are useable for sidelink feedback. Numerous other aspects are provided.
說明書
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This patent application claims priority to Provisional Patent Application No. 62/706,022, filed on Jul. 27, 2020, entitled “TRANSMITTING RESOURCE COLLISION INDICATION ON SIDELINK FEEDBACK CHANNEL,” and assigned to the assignee hereof. The disclosure of the prior Application is considered part of and is incorporated by reference into this patent application.
Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for transmitting a resource collision indication on a sidelink feedback channel.
Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).
權(quán)利要求
What is claimed is:1. A method of wireless communication performed by a first user equipment (UE), comprising:identifying a collision on a victim resource based at least in part on an aggressor reservation transmitted by a second UE, the victim resource being a sidelink resource that is in conflict between the first UE and the second UE; and transmitting, to the second UE via a sidelink feedback channel, a resource collision indication that indicates at least one of the victim resource or the aggressor reservation, wherein the resource collision indication is multiplexed on one or more resources that are useable for sidelink feedback. 2. The method of claim 1 , wherein the resource collision indication is mapped to a resource that is not in use for sidelink feedback when the mapping of the resource collision indication is performed. 3. The method of claim 1 , wherein the resource collision indication is mapped to a resource that is not associated with feedback regarding a transmission with the aggressor reservation or the victim resource. 4. The method of claim 1 , wherein the resource collision indication is mapped to a resource that is associated with feedback regarding a transmission with the aggressor reservation or the victim resource. 5. The method of claim 1 , further comprising:generating the resource collision indication using a different sequence than a sequence used to generate feedback regarding a transmission with the aggressor reservation or the victim resource. 6. The method of claim 1 , further comprising:generating the resource collision indication using an extended sequence, wherein the extended sequence is extended relative to a sequence used to generate feedback regarding a transmission with the aggressor reservation or the victim resource. 7. The method of claim 6 , wherein the extended sequence spans multiple resource blocks. 8. The method of claim 1 , further comprising:identifying a conflict between transmission of the resource collision indication and another communication of the first UE; and resolving the conflict based at least in part on one or more priority rules, wherein transmitting the resource collision indication is based at least in part on resolving the conflict. 9. The method of claim 8 , wherein the one or more priority rules indicate to perform a communication of the resource collision indication and the other communication that is associated with a highest priority level. 10. The method of claim 8 , wherein resolving the conflict is based at least in part on a capability of the first UE for concurrent transmission or reception. 11. The method of claim 8 , wherein the one or more priority rules are based at least in part on a priority level of the other communication, wherein the priority level is based at least in part on a priority level of a sidelink control channel or a sidelink shared channel associated with the other communication. 12. The method of claim 8 , further comprising:receiving configuration information indicating a priority level of the resource collision indication, wherein the one or more priority rules are based at least in part on the priority level of the resource collision indication. 13. The method of claim 8 , wherein the one or more priority rules are based at least in part on a priority level of the resource collision indication, wherein the priority level is based at least in part on a priority level of a sidelink control channel or a sidelink shared channel associated with the resource collision indication. 14. The method of claim 8 , wherein resolving the conflict is based at least in part on one or more priority level thresholds associated with the resource collision indication or the other communication. 15. A method of wireless communication performed by a first user equipment (UE), comprising:receiving, from a second UE via a sidelink feedback channel, a resource collision indication that indicates at least one of an aggressor reservation transmitted by the first UE or a victim resource that is in conflict between the first UE and the second UE, wherein the resource collision indication is based at least in part on a collision on the victim resource and is multiplexed on one or more resources that are useable for sidelink feedback; and performing an action based at least in part on the resource collision indication. 16. The method of claim 15 , wherein:the resource collision indication is mapped to a resource that is not in use for sidelink feedback when the mapping of the resource collision indication is performed; the resource collision indication is mapped to a resource that is not associated with feedback regarding a transmission with the aggressor reservation or the victim resource; or the resource collision indication is mapped to a resource that is associated with feedback regarding a transmission with the aggressor reservation or the victim resource. 17. The method of claim 15 , wherein:the resource collision indication uses a different sequence than a sequence used to generate feedback regarding a transmission with the aggressor reservation or the victim resource; or the resource collision indication uses an extended sequence, wherein the extended sequence is extended relative to a sequence used to generate feedback regarding a transmission with the aggressor reservation or the victim resource, and wherein the sequence spans multiple resource blocks. 18. The method of claim 15 , further comprising:identifying a conflict between reception of the resource collision indication and another communication of the first UE; and resolving the conflict based at least in part on one or more priority rules, wherein receiving the resource collision indication is based at least in part on resolving the conflict. 19. The method of claim 18 , wherein:the one or more priority rules indicate to perform a communication of the resource collision indication and the other communication that is associated with a highest priority level; the one or more priority rules are based at least in part on a priority level of the other communication, wherein the priority level is based at least in part on a priority level of a sidelink control channel or a sidelink shared channel associated with the other communication; or the one or more priority rules are based at least in part on a priority level of the resource collision indication, wherein the priority level is based at least in part on a priority level of a sidelink control channel or a sidelink shared channel associated with the resource collision indication. 20. The method of claim 15 , wherein:resolving the conflict is based at least in part on a capability of the first UE for concurrent transmission or reception; or resolving the conflict is based at least in part on one or more priority level thresholds associated with the resource collision indication or the other communication. 21. The method of claim 15 , further comprising:receiving configuration information indicating a priority level of the resource collision indication, wherein one or more priority rules are based at least in part on the priority level of the resource collision indication. 22. The method of claim 15 , wherein the action comprises dropping, delaying, or rescheduling a communication on the victim resource. 23. A first user equipment (UE) for wireless communication, comprising:a memory; and one or more processors, coupled to the memory, configured to:identify a collision on a victim resource based at least in part on an aggressor reservation transmitted by a second UE, the victim resource being a sidelink resource that is in conflict between the first UE and the second UE; and transmit, to the second UE via a sidelink feedback channel, a resource collision indication that indicates at least one of the victim resource or the aggressor reservation, wherein the resource collision indication is multiplexed on one or more resources that are useable for sidelink feedback. 24. The first UE of claim 23 , wherein:the resource collision indication is mapped to a resource that is not in use for sidelink feedback when the mapping of the resource collision indication is performed; the resource collision indication is mapped to a resource that is not associated with feedback regarding a transmission with the aggressor reservation or the victim resource; or the resource collision indication is mapped to a resource that is associated with feedback regarding a transmission with the aggressor reservation or the victim resource. 25. The first UE of claim 23 , wherein the one or more processors are further configured to:generate the resource collision indication using a different sequence than a sequence used to generate feedback regarding a transmission with the aggressor reservation or the victim resource; or generate the resource collision indication using an extended sequence, wherein the extended sequence is extended relative to a sequence used to generate feedback regarding a transmission with the aggressor reservation or the victim resource, and wherein the extended sequence spans multiple resource blocks. 26. The first UE of claim 23 , wherein the one or more processors are further configured to:identify a conflict between transmission of the resource collision indication and another communication of the first UE; and resolve the conflict based at least in part on one or more priority rules, wherein transmitting the resource collision indication is based at least in part on resolving the conflict. 27. A first user equipment (UE) for wireless communication, comprising:a memory; and one or more processors, coupled to the memory, configured to:receive, from a second UE via a sidelink feedback channel, a resource collision indication that indicates at least one of an aggressor reservation transmitted by the first UE or a victim resource that is in conflict between the first UE and the second UE, wherein the resource collision indication is based at least in part on a collision on the victim resource and is multiplexed on one or more resources that are useable for sidelink feedback; and perform an action based at least in part on the resource collision indication. 28. The first UE of claim 27 , wherein the one or more processors are further configured to:identify a conflict between reception of the resource collision indication and another communication of the first UE; and resolve the conflict based at least in part on one or more priority rules, wherein receiving the resource collision indication is based at least in part on resolving the conflict, wherein:the one or more priority rules indicate to perform a communication of the resource collision indication and the other communication that is associated with a highest priority level; the one or more priority rules are based at least in part on a priority level of the other communication, wherein the priority level is based at least in part on a priority level of a sidelink control channel or a sidelink shared channel associated with the other communication; or the one or more priority rules are based at least in part on a priority level of the resource collision indication, wherein the priority level is based at least in part on a priority level of a sidelink control channel or a sidelink shared channel associated with the resource collision indication. 29. The first UE of claim 27 , wherein the one or more processors are further configured to:receive configuration information indicating a priority level of the resource collision indication, wherein one or more priority rules are based at least in part on the priority level of the resource collision indication. 30. The first UE of claim 27 , wherein the one or more processors, to perform the action, are configured to: drop, delay or reschedule a communication on the victim resource.
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