# US 12,120,682 B2 · Techniques for providing an indication of a reservation conflict > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,682 B2 - Document ID: US12120682B2 - Status: Granted - Kind: B2 - Application number: 17/220,234 - Filed: 2021-04-01 - Published: 2021-11-18 - Granted: 2024-10-15 - Earliest claimed: 2020-05-15 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Gabi Sarkis; Tien Viet Nguyen; Shuanshuan Wu; Kapil Gulati; Junyi Li; Peter Gaal - Web page: https://patentgrep.com/patent/US12120682B2 ## CPC - H04W 72/20: Control channels or signalling for resource management - H04W 76/14: Direct-mode setup - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - 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 Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive, from a second UE, a resource reservation that indicates a reservation for one or more resources; and transmit an indication that at least one resource of the one or more resources is in conflict with an additional resource reservation, the indication including one or more of an identification of the at least one resource, an identification of the resource reservation, or an identification of the second UE. Numerous other aspects are provided. ## Claims ### Claim 1 A method of wireless communication performed by a first user equipment (UE), comprising: receiving, in a sidelink control information message from a second UE, a resource reservation that indicates a reservation for one or more resources; and transmitting, via a sidelink physical channel communication and based at least in part on receiving the resource reservation, an indication that at least one resource of the one or more resources is in conflict with an additional resource reservation, the indication including an identification of the at least one resource, the indication being transmitted in a resource that is determined based at least in part on the resource reservation. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one resource of the one or more resources is in conflict with the additional resource reservation based at least in part on the at least one resource of the one or more resources overlapping in one or more of time or frequency with a resource associated with the additional resource reservation. ### Claim 3 (depends on 1) The method of claim 1, wherein transmitting the indication further comprises one or more of: transmitting the indication via one or more of a sidelink control information message or one or more medium access control control elements; transmitting the indication as a sequence-based indication of the at least one resource; or transmitting the indication as a sequence-based indication of the resource reservation. ### Claim 4 (depends on 1) The method of claim 1, wherein the at least one resource is reserved by the first UE or an additional UE. ### Claim 5 (depends on 1) The method of claim 1, wherein the resource reservation indicates a reservation for a resource that is not reserved, and wherein the indication includes the identification of the at least one resource and not an identification of the resource that is not reserved. ### Claim 6 (depends on 1) The method of claim 1, further comprising: receiving, before receiving the resource reservation, a previous resource reservation that indicates an additional reservation for the at least one resource; or transmitting, before receiving the resource reservation, a previous resource reservation, wherein the previous resource reservation has a same priority or a higher priority than a priority of the resource reservation. ### Claim 7 (depends on 1) The method of claim 1, wherein the identification of the at least one resource comprises one or more of: an identification of a frequency allocation of a physical sidelink control channel of the at least one resource, an identification of a frequency allocation of a physical sidelink shared channel of the at least one resource, or an identification of a time allocation of the at least one resource. ### Claim 8 (depends on 1) The method of claim 1, wherein the indication further includes an identification of the resource reservation, and wherein the identification of the resource reservation comprises one or more of: an indication of a frequency allocation of a physical sidelink control channel associated with the resource reservation, an indication of a time allocation of the physical sidelink control channel associated with the resource reservation, an indication that identifies a portion of the resource reservation that indicates a reservation of the at least one resource, or a cover code index for a demodulation reference signal used for the resource reservation. ### Claim 9 (depends on 1) The method of claim 1, wherein the indication further includes a source identification of the resource reservation, or wherein the indication comprises one or more of: an indication of a priority of the resource reservation, or an indication of a priority of a previous resource reservation that indicates an additional reservation for the at least one resource. ### Claim 10 (depends on 1) The method of claim 1, wherein transmitting the indication comprises one or more of: transmitting a first indication, of the indication, associated with a first subchannel of the at least one resource; and transmitting a second indication, of the indication, associated with a second subchannel of the at least one resource, wherein transmitting the first indication comprises: transmitting the first indication using a first set of resource blocks that are associated with the first subchannel, transmitting the first indication using a first set of resource blocks that are associated with a subchannel that contains the resource reservation, transmitting the second indication using a second set of resource blocks that are associated with the second subchannel, or transmitting the second indication using a second set of resource blocks that are associated with a subchannel that contains the resource reservation. ### Claim 11 (depends on 10) The method of claim 10, wherein the first set of resource blocks are associated with the first subchannel based at least in part on one or more of: a location of the first subchannel, or a location of the resource reservation. ### Claim 12 A first user equipment (UE) for wireless communication, comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors configured to: receive, in a sidelink control information message from a second UE, a resource reservation that indicates a reservation for one or more resources; and transmit, via a sidelink physical channel communication and based at least in part on reception of the resource reservation, an indication that at least one resource of the one or more resources is in conflict with an additional resource reservation, the indication including an identification of the at least one resource, the indication being transmitted in a resource that is determined based at least in part on the resource reservation. ### Claim 13 (depends on 12) The first UE of claim 12, wherein the at least one resource of the one or more resources is in conflict with the additional resource reservation based at least in part on the at least one resource of the one or more resources overlapping in one or more of time or frequency with a resource associated with the additional resource reservation. ### Claim 14 (depends on 12) The first UE of claim 12, wherein transmission of the indication further comprises one or more of: transmission of the indication via one or more of a sidelink control information message or one or more medium access control control elements; transmission of the indication as a sequence-based indication of the at least one resource; or transmission of the indication as a sequence-based indication of the resource reservation. ### Claim 15 (depends on 12) The first UE of claim 12, wherein the at least one resource is reserved by the first UE or an additional UE. ### Claim 16 (depends on 12) The first UE of claim 12, wherein the resource reservation indicates a reservation for a resource that is not reserved, and wherein the indication includes the identification of the at least one resource and not an identification of the resource that is not reserved. ### Claim 17 (depends on 12) The first UE of claim 12, wherein the one or more processors are further configured to: receive, before reception of the resource reservation, a previous resource reservation that indicates an additional reservation for the at least one resource; or transmit, before reception of the resource reservation, the previous resource reservation, wherein the previous resource reservation has a same priority or a higher priority than a priority of the resource reservation. ### Claim 18 (depends on 12) The first UE of claim 12, wherein the identification of the at least one resource comprises one or more of: an identification of a frequency allocation of a physical sidelink control channel of the at least one resource, an identification of a frequency allocation of a physical sidelink shared channel of the at least one resource, or an identification of a time allocation of the at least one resource. ### Claim 19 (depends on 12) The first UE of claim 12, wherein the indication further includes an identification of the resource reservation, and wherein the identification of the resource reservation comprises one or more of: an indication of a frequency allocation of a physical sidelink control channel associated with the resource reservation, an indication of a time allocation of the physical sidelink control channel associated with the resource reservation, an indication that identifies a portion of the resource reservation that indicates a reservation of the at least one resource, or a cover code index for a demodulation reference signal used for the resource reservation. ### Claim 20 (depends on 12) The first UE of claim 12, wherein the wherein the indication further includes a source identification of the resource reservation, or wherein the indication comprises one or more of: an indication of a priority of the resource reservation, or an indication of a priority of a previous resource reservation that indicates an additional reservation for the at least one resource. ### Claim 21 (depends on 12) The first UE of claim 12, wherein transmission of the indication comprises one or more of: transmission of a first indication, of the indication, associated with a first subchannel of the at least one resource, and transmission of a second indication, of the indication, associated with a second subchannel of the at least one resource, wherein the transmission of the first indication comprises: transmission of the first indication using a first set of resource blocks that are associated with the first subchannel, transmission of the first indication using a first set of resource blocks that are associated with a subchannel that contains the resource reservation, transmission of the second indication using a second set of resource blocks that are associated with the second subchannel, or transmission of the second indication using a second set of resource blocks that are associated with a subchannel that contains the resource reservation. ### Claim 22 (depends on 21) The first UE of claim 21, wherein the first set of resource blocks are associated with the first subchannel based at least in part on one or more of: a location of the first subchannel, or a location of the resource reservation. ### Claim 23 A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising: one or more instructions that, when executed by one or more processors of a first user equipment (UE), cause the one or more processors to: receive, in a sidelink control information message from a second UE, a resource reservation that indicates a reservation for one or more resources; and transmit, via a sidelink physical channel communication and based at least in part on reception of the resource reservation, an indication that at least one resource of the one or more resources is in conflict with an additional resource reservation, the indication including an identification of the at least one resource, the indication being transmitted in a resource that is determined based at least in part on the resource reservation. ### Claim 24 (depends on 23) The non-transitory computer-readable medium of claim 23, wherein transmission of the indication further comprises one or more of: transmission of the indication via one or more of a sidelink control information message or one or more medium access control control elements; transmission of the indication as a sequence-based indication of the at least one resource; or transmission of the indication as a sequence-based indication of the resource reservation. ### Claim 25 (depends on 23) The non-transitory computer-readable medium of claim 23, wherein the identification of the at least one resource comprises one or more of: an identification of a frequency allocation of a physical sidelink control channel of the at least one resource, an identification of a frequency allocation of a physical sidelink shared channel of the at least one resource, or an identification of a time allocation of the at least one resource. ### Claim 26 (depends on 23) The non-transitory computer-readable medium of claim 23, wherein the indication further includes an identification of the resource reservation, and wherein the identification of the resource reservation comprises one or more of: an indication of a frequency allocation of a physical sidelink control channel associated with the resource reservation, an indication of a time allocation of the physical sidelink control channel associated with the resource reservation, an indication that identifies a portion of the resource reservation that indicates a reservation of the at least one resource, or a cover code index for a demodulation reference signal used for the resource reservation. ### Claim 27 An apparatus for wireless communication, comprising: means for receiving, in a sidelink control information message from a UE, a resource reservation that indicates a reservation for one or more resources; and means for transmitting, via a sidelink physical channel communication and based at least in part on reception of the resource reservation, an indication that at least one resource of the one or more resources is in conflict with an additional resource reservation, the indication including an identification of the at least one resource, the indication being transmitted in a resource that is determined based at least in part on the resource reservation. ### Claim 28 (depends on 27) The apparatus of claim 27, wherein the means for transmitting the indication further comprises one or more of: means for transmitting the indication via one or more of a sidelink control information message or one or more medium access control control elements; means for receiving the indication as a sequence-based indication of the at least one resource; or means for receiving the indication as a sequence-based indication of the resource reservation. ### Claim 29 (depends on 27) The apparatus of claim 27, wherein the identification of the at least one resource comprises one or more of: an identification of a frequency allocation of a physical sidelink control channel of the at least one resource, an identification of a frequency allocation of a physical sidelink shared channel of the at least one resource, or an identification of a time allocation of the at least one resource. ### Claim 30 (depends on 27) The apparatus of claim 27, wherein the identification of the resource reservation comprises one or more of: an indication of a frequency allocation of a physical sidelink control channel associated with the resource reservation, an indication of a time allocation of the physical sidelink control channel associated with the resource reservation, an indication that identifies a portion of the resource reservation that indicates a reservation of the at least one resource, or a cover code index for a demodulation reference signal used for the resource reservation.