# US 12,120,692 B2 · Scheduling resources for user equipment (UE) sidelink communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,692 B2 - Document ID: US12120692B2 - Status: Granted - Kind: B2 - Application number: 17/198,949 - Filed: 2021-03-11 - Published: 2021-12-02 - Granted: 2024-10-15 - Earliest claimed: 2020-05-29 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Lik Hang Silas Fong; Jing Sun; Piyush Gupta; Junyi Li; Xiaoxia Zhang; Xiaojie Wang - Web page: https://patentgrep.com/patent/US12120692B2 ## CPC - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/0061: {Error detection codes} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04W 4/46: for vehicle-to-vehicle communication [V2V] - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 76/23: Manipulation of direct-mode connections - H04W 92/18: between terminal devices - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04W 76/14: Direct-mode setup - H04W 88/04: adapted for relaying to or from another terminal or user - 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 Systems and non-transitory computer-readable mediums for scheduling resources for a specific sidelink are described. Some embodiments provide scheduling of resources for a sidelink between a first user equipment (UE) in communication with a base station and a specified second UE in communication with the first UE, such as using downlink control information (DCI) and/or radio resource control (RRC) signaling. The scheduling of sidelink resources may be with respect to a dynamic grant (DG) or a configured grant (CG). Other aspects and features are also claimed and described. ## Claims ### Claim 1 A method of wireless communication, comprising: scheduling, by a base station, resources for a sidelink between a first user equipment (UE) and a specified second UE, wherein the first UE is in communication with the base station and is a UE to transmit to the specified second UE via the sidelink; and transmitting, by the base station, control signaling to the first UE to implement the sidelink between the first UE and the specified second UE in accordance with the scheduling, wherein the control signaling is configured to assign granted resources as link resources for the sidelink between the first UE and the specified second UE and is configured to specify to the first UE the specified second UE is a sidelink receiver UE for the sidelink by including at least one of: a hybrid automatic repeat request (HARQ) process identifier providing a sidelink RX UE indicator for the specified second UE; or a cyclic redundancy check (CRC) of downlink control information (DCI) of the control signaling scrambled using a radio network temporary identifier (RNTI) distributed to the first UE and the specified second UE that provides destination identification for the specified second UE. ### Claim 2 (depends on 1) The method of claim 1, further comprising: controlling, by the base station, resources allocated to the sidelink between the first UE and the specified second UE using downlink control information (DCI). ### Claim 3 (depends on 1) The method of claim 1, further comprising: determining, by the base station, if additional resource allocation is to be provided for the sidelink between the first UE and the specified second UE based at least in part on an acknowledgment/negative-acknowledgment (ACK/NACK) received from the first UE via a physical uplink control channel (PUCCH). ### Claim 4 (depends on 1) The method of claim 1, wherein the DCI is configured to carry the HARQ process identifier for the sidelink receiver UE specified by the base station. ### Claim 5 (depends on 4) The method of claim 4, wherein the scheduling is with respect to a dynamic grant (DG), the method further comprising: scrambling, by the base station, the CRC of the DCI using a sidelink-radio network temporary identifier (SL-RNTI) corresponding to the first UE. ### Claim 6 (depends on 4) The method of claim 4, wherein the scheduling is with respect to a configured grant (CG), the method further comprising: scrambling, by the base station, the CRC of the DCI using a sidelink-configured scheduling-radio network temporary identifier (SL-CS-RNTI) corresponding to the first UE. ### Claim 7 (depends on 1) The method of claim 1, wherein the control signaling includes the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE, and wherein the DCI carries one or more HARQ process identifiers including the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE. ### Claim 8 (depends on 1) The method of claim 1, wherein the CRC of the DCI is scrambled using the RNTI distributed to the first UE and the specified second UE that provides the destination identification for the specified second UE. ### Claim 9 (depends on 8) The method of claim 8, wherein the scheduling is with respect to a dynamic grant (DG), and wherein the RNTI comprises a sidelink-transmitter UE-receiver UE-radio network temporary identifier (SL-TX-RX-RNTI) corresponding to the first UE and the specified second UE. ### Claim 10 (depends on 8) The method of claim 8, wherein the scheduling is with respect to a configured grant (CG), and wherein the RNTI comprises a sidelink-configured scheduling-transmitter UE-receiver UE-radio network temporary identifier (SL-CS-TX-RX-RNTI) corresponding to the first UE and the specified second UE. ### Claim 11 An apparatus configured for wireless communication, the apparatus comprising: at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured: to schedule, by a base station, resources for a sidelink between a first user equipment (UE) and a specified second UE, wherein the first UE is in communication with the base station and is a UE to transmit to the specified second UE via the sidelink; and to transmit, by the base station, control signaling to the first UE to implement the sidelink between the first UE and the specified second UE in accordance with the scheduling, wherein the control signaling is configured to assign granted resources as link resources for the sidelink between the first UE and the specified second UE and is configured to specify to the first UE the specified second UE is a sidelink receiver UE for the sidelink by including at least one of: a hybrid automatic repeat request (HARQ) process identifier providing a sidelink RX UE indicator for the specified second UE; or a cyclic redundancy check (CRC) of downlink control information (DCI) of the control signaling scrambled using a radio network temporary identifier (RNTI) distributed to the first UE and the specified second UE that provides destination identification for the specified second UE. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the at least one processor is further configured: to determine, by the base station, if additional resource allocation is to be provided for the sidelink between the first UE and the specified second UE based at least in part on an acknowledgment/negative-acknowledgment (ACK/NACK) received from the first UE via a physical uplink control channel (PUCCH). ### Claim 13 (depends on 11) The apparatus of claim 11, wherein the DCI is configured to carry the HARQ process identifier for the sidelink receiver UE specified by the base station, wherein if the scheduling is with respect to a dynamic grant (DG) the at least one processor is further configured to scramble the CRC of the DCI using a sidelink-radio network temporary identifier (SL-RNTI) corresponding to the first UE, and wherein if the scheduling is with respect to a configured grant (CG) the at least one processor is further configured to scramble the CRC of the DCI using a sidelink-configured scheduling-radio network temporary identifier (SL-CS-RNTI) corresponding to the first UE. ### Claim 14 (depends on 11) The apparatus of claim 11, wherein the control signaling includes the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE, and wherein the DCI carries one or more HARQ process identifiers including the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE. ### Claim 15 (depends on 11) The apparatus of claim 11, wherein the CRC of the DCI is scrambled using the RNTI distributed to the first UE and the specified second UE that provides based at least in part on the destination identification for the specified second UE, wherein if the scheduling is with respect to a dynamic grant (DG) the RNTI comprises a sidelink-transmitter UE-receiver UE-radio network temporary identifier (SL-TX-RX-RNTI) corresponding to the first UE and the specified second UE, and wherein if the scheduling is with respect to a configured grant (CG) the RNTI comprises a sidelink-configured scheduling-transmitter UE-receiver UE-radio network temporary identifier (SL-CS-TX-RX-RNTI) corresponding to the first UE and the specified second UE. ### Claim 16 A method of wireless communication, comprising: receiving, by a first user equipment (UE) from a base station, control signaling scheduling resources for a sidelink between the first UE and a specified second UE, wherein the first UE is in communication with the base station and is a UE to transmit to the specified second UE via the sidelink, and wherein the control signaling is configured to assign granted resources as link resources for the sidelink between the first UE and the specified second UE and is configured to specify to the first UE the specified second UE is a sidelink receiver UE for the sidelink by including at least one of: a hybrid automatic repeat request (HARQ) process identifier providing a sidelink RX UE indicator for the specified second UE; or a cyclic redundancy check (CRC) of downlink control information (DCI) of the control signaling scrambled using a radio network temporary identifier (RNTI) distributed to the first UE and the specified second UE that provides destination identification for the specified second UE; and implementing, by the first UE based on the control signaling, the sidelink between the first UE and the specified second UE in accordance with the scheduling. ### Claim 17 (depends on 16) The method of claim 16, wherein the first UE operates under control of the base station to implement resources allocated to the sidelink between the first UE and the specified second UE as designated by downlink control information (DCI). ### Claim 18 (depends on 16) The method of claim 16, further comprising: providing, by the first UE to the base station via a physical uplink control channel (PUCCH), an acknowledgment/negative-acknowledgment (ACK/NACK) configured for the base station determining if additional resource allocation is to be provided for the sidelink between the first UE and the specified second UE. ### Claim 19 (depends on 16) The method of claim 16, wherein the DCI is configured to carry the HARQ process identifier for the sidelink receiver UE specified by the base station. ### Claim 20 (depends on 19) The method of claim 19, wherein the scheduling is with respect to a dynamic grant (DG), and wherein the CRC of the DCI is scrambled using a sidelink-radio network temporary identifier (SL-RNTI) corresponding to the first UE. ### Claim 21 (depends on 19) The method of claim 19, wherein the scheduling is with respect to a configured grant (CG), and wherein the CRC of the DCI is scrambled using a sidelink-configured scheduling-radio network temporary identifier (SL-CS-RNTI) corresponding to the first UE. ### Claim 22 (depends on 16) The method of claim 16, wherein the control signaling includes the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE, and wherein the DCI carries one or more HARQ process identifiers including the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE. ### Claim 23 (depends on 16) The method of claim 16, wherein the CRC of the DCI is scrambled using the RNTI distributed to the first UE and the specified second UE that provides the destination identification for the specified second UE. ### Claim 24 (depends on 23) The method of claim 23, wherein the scheduling is with respect to a dynamic grant (DG), and wherein the RNTI comprises a sidelink-transmitter UE-receiver UE-radio network temporary identifier (SL-TX-RX-RNTI) corresponding to the first UE and the specified second UE. ### Claim 25 (depends on 23) The method of claim 23, wherein the scheduling is with respect to a configured grant (CG), and wherein the RNTI comprises a sidelink-configured scheduling-transmitter UE-receiver UE-radio network temporary identifier (SL-CS-TX-RX-RNTI) corresponding to the first UE and the specified second UE. ### Claim 26 An apparatus configured for wireless communication, the apparatus comprising: at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured: to receive, by a first user equipment (UE) from a base station, control signaling scheduling resources for a sidelink between the first UE and a specified second UE, wherein the first UE is in communication with the base station and is a UE to transmit to the specified second UE via the sidelink, and wherein the control signaling is configured to assign granted resources as link resources for the sidelink between the first UE and the specified second UE and is configured to specify to the first UE the specified second UE is a sidelink receiver UE for the sidelink by including at least one of: a hybrid automatic repeat request (HARQ) process identifier providing a sidelink RX UE indicator for the specified second UE; or a cyclic redundancy check (CRC) of downlink control information (DCI) of the control signaling scrambled using a radio network temporary identifier (RNTI) distributed to the first UE and the specified second UE that provides destination identification for the specified second UE; and to implement, by the first UE based on the control signaling, the sidelink between the first UE and the specified second UE in accordance with the scheduling. ### Claim 27 (depends on 26) The apparatus of claim 26, wherein the at least one processor is further configured: to provide, by the first UE to the base station via a physical uplink control channel (PUCCH), an acknowledgment/negative-acknowledgment (ACK/NACK) configured for the base station determining if additional resource allocation is to be provided for the sidelink between the first UE and the specified second UE. ### Claim 28 (depends on 26) The apparatus of claim 26, wherein the DCI is configured to carry the HARQ process identifier for the sidelink receiver UE specified by the base station, wherein if the scheduling is with respect to a dynamic grant (DG) the CRC of the DCI is scrambled using a sidelink-radio network temporary identifier (SL-RNTI) corresponding to the first UE, and wherein if the scheduling is with respect to a configured grant (CG) the CRC of the DCI is scrambled using a SL-CS-RNTI corresponding to the first UE. ### Claim 29 (depends on 26) The apparatus of claim 26, wherein the control signaling includes the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE, and wherein the DCI carries one or more HARQ process identifiers including the HARQ process identifier providing the sidelink RX UE indicator for the specified second UE. ### Claim 30 (depends on 26) The apparatus of claim 26, wherein the CRC of the DCI is scrambled using the RNTI distributed to the first UE and the specified second UE that provides the destination identification for the specified second UE, wherein if the scheduling is with respect to a dynamic grant (DG) the RNTI comprises a sidelink-transmitter UE-receiver UE-radio network temporary identifier (SL-TX-RX-RNTI) corresponding to the first UE and the specified second UE, and wherein if the scheduling is with respect to a configured grant (CG) the RNTI comprises a sidelink-configured scheduling-transmitter UE-receiver UE-radio network temporary identifier (SL-CS-TX-RX-RNTI) corresponding to the first UE and the specified second UE.