# US 12,004,173 B2 · Semi-persistent scheduling configurations for sidelink communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,173 B2 - Document ID: US12004173B2 - Status: Granted - Kind: B2 - Application number: 17/327,211 - Filed: 2021-05-21 - Published: 2022-01-13 - Granted: 2024-06-04 - Earliest claimed: 2020-07-07 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Lik Hang Silas Fong; Jing Sun; Piyush Gupta; Xiaojie Wang; Yisheng Xue; Sony Akkarakaran - Web page: https://patentgrep.com/patent/US12004173B2 ## CPC - H04W 72/20: Control channels or signalling for resource management - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/0061: {Error detection codes} - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04W 72/535: {based on resource usage policies} - 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. A base station may send coupled configured grants to a transmitter user equipment (UE) and a receiver UE, respectively. For example, when transmitting a pair of configured grants that includes a first configured grant sent to a first UE and a second configured grant sent to a second UE, the base station may include an indication in each of the configured grants that sidelink semi-persistent scheduling resources are activated or deactivated. Additionally, the configured grants may indicate which UE is a receiver and which UE is a transmitter. For instance, the first configured grant may indicate that a first UE is to be the transmitter and a second configured grant indicate that a second UE is to be the receiver. ## Claims ### Claim 1 A method for wireless communications at a first user equipment (UE), comprising: receiving, from a network entity, a configured grant pair configuration indicating: a sidelink semi-persistent scheduling resource allocation for a sidelink channel for communicating with a second UE, and a first configured grant for the first UE and a second configured grant for the second UE, wherein the first configured grant and the second configured grant, of a configured grant pair, each indicate: an activation of the sidelink semi-persistent scheduling resource allocation for communications between the first UE and the second UE via the sidelink channel, which of the first UE or the second UE is a transmitter for communications between the first UE and the second UE on the sidelink channel, and which of the first UE or the second UE is a receiver for communications between the first UE and the second UE on the sidelink channel; receiving, from the network entity, the first configured grant of the configured grant pair based at least in part on the configured grant pair configuration; and communicating with the second UE on the sidelink channel according to the sidelink semi-persistent scheduling resource allocation based at least in part on the first configured grant. ### Claim 2 (depends on 1) The method of claim 1, wherein the first configured grant indicates that the first UE is the transmitter for communications with the second UE on the sidelink channel. ### Claim 3 (depends on 1) The method of claim 1, wherein communicating with the second UE on the sidelink channel comprises: transmitting a sidelink message to the second UE via the sidelink semi-persistent scheduling resource allocation based at least in part on the first configured grant indicating that the first UE is the transmitter. ### Claim 4 (depends on 1) The method of claim 1, wherein the first configured grant comprises a bit set to indicate that the first UE is the transmitter. ### Claim 5 (depends on 1) The method of claim 1, wherein receiving the first configured grant comprises: receiving the first configured grant in a downlink control information format that indicates that the first UE is the transmitter. ### Claim 6 (depends on 1) The method of claim 1, wherein the first configured grant comprises a cyclic redundancy check field scrambled with a radio network temporary identifier that indicates that the first UE is the transmitter. ### Claim 7 (depends on 1) The method of claim 1, wherein the first configured grant indicates that the first UE is the receiver for communications with the second UE on the sidelink channel. ### Claim 8 (depends on 1) The method of claim 1, wherein communicating with the second UE on the sidelink channel comprises: receiving a sidelink message from the second UE via the sidelink semi-persistent scheduling resource allocation based at least in part on the first configured grant indicating that the first UE is the receiver. ### Claim 9 (depends on 1) The method of claim 1, wherein the first configured grant comprises a bit set to indicate that the first UE is the receiver. ### Claim 10 (depends on 1) The method of claim 1, wherein receiving the first configured grant comprises: receiving the first configured grant in a downlink control information format that indicates that the first UE is the receiver. ### Claim 11 (depends on 1) The method of claim 1, wherein the first configured grant comprises a cyclic redundancy check field scrambled with a radio network temporary identifier that indicates that the first UE is the receiver. ### Claim 12 (depends on 1) The method of claim 1, wherein the first configured grant comprises a new data indicator set to a first value and a resource assignment field set to a second value to indicate the activation of the sidelink semi-persistent scheduling resource allocation. ### Claim 13 (depends on 1) The method of claim 1, wherein the first configured grant comprises a field set to a first value to indicate the activation of the sidelink semi-persistent scheduling resource allocation. ### Claim 14 (depends on 1) The method of claim 1, further comprising: receiving, from the network entity, a downlink control information message that indicates to deactivate the sidelink semi-persistent scheduling resource allocation for the sidelink channel. ### Claim 15 (depends on 14) The method of claim 14, further comprising: transmitting, to the network entity, a confirmation message to acknowledge deactivation for the sidelink semi-persistent scheduling resource allocation for the sidelink channel based at least in part on receiving the downlink control information message. ### Claim 16 (depends on 15) The method of claim 15, wherein transmitting the confirmation message comprises: transmitting a medium access control (MAC) control element comprising the confirmation message. ### Claim 17 (depends on 1) The method of claim 1, wherein the first configured grant comprises a cyclic redundancy check scrambled with a radio network temporary identifier corresponding to the first UE and an indication of the second UE for communications on the sidelink channel. ### Claim 18 (depends on 1) The method of claim 1, wherein receiving the first configured grant comprises: receiving an indication for a retransmission for communications on the sidelink channel according to the sidelink semi-persistent scheduling resource allocation based at least in part on a sidelink radio network temporary identifier specific to the first UE used to scramble a cyclic redundancy check of the first configured grant, a new data indicator, a hybrid access request identifier field in the first configured grant, or a combination thereof. ### Claim 19 (depends on 1) The method of claim 1, wherein receiving the configured grant pair configuration comprises: receiving, from the network entity, the configured grant pair configuration via a downlink control information message, radio resource control signaling, or a combination thereof. ### Claim 20 (depends on 1) The method of claim 1, wherein receiving the first configured grant comprises: receiving, from the network entity, a downlink control information message comprising the first configured grant. ### Claim 21 (depends on 1) The method of claim 1, further comprising: transmitting, to the network entity, a confirmation message to acknowledge the activation of the sidelink semi-persistent scheduling resource allocation for the sidelink channel based at least in part on receiving the first configured grant. ### Claim 22 (depends on 21) The method of claim 21, wherein transmitting the confirmation message comprises: transmitting a medium access control (MAC) control element comprising the confirmation message. ### Claim 23 An apparatus for wireless communications at a first user equipment (UE), comprising: one or more processors; memory coupled with the one or more processors; and instructions stored in the memory and executable by the one or more processors to cause the apparatus to: receive, from a network entity, a configured grant pair configuration indicating: a sidelink semi-persistent scheduling resource allocation for a sidelink channel for communicating with a second UE, and a first configured grant for the first UE and a second configured grant for the second UE, wherein the first configured grant and the second configured grant, of a configured grant pair, each indicate: an activation of the sidelink semi-persistent scheduling resource allocation for communications between the first UE and the second UE via the sidelink channel, which of the first UE or the second UE is a transmitter for communications between the first UE and the second UE on the sidelink channel, and which of the first UE or the second UE is a receiver for communications between the first UE and the second UE on the sidelink channel; receive, from the network entity, the first configured grant of the configured grant pair based at least in part on the configured grant pair configuration; and communicate with the second UE on the sidelink channel according to the sidelink semi-persistent scheduling resource allocation based at least in part on the first configured grant. ### Claim 24 (depends on 23) The apparatus of claim 23, wherein the first configured grant indicates that the first UE is the transmitter for communications with the second UE on the sidelink channel. ### Claim 25 (depends on 23) The apparatus of claim 23, wherein the instructions to communicate with the second UE on the sidelink channel are executable by the one or more processors to cause the apparatus to: transmit a sidelink message to the second UE via the sidelink semi-persistent scheduling resource allocation based at least in part on the first configured grant indicating that the first UE is the transmitter. ### Claim 26 (depends on 23) The apparatus of claim 23, wherein the first configured grant comprises a bit set to indicate that the first UE is the transmitter. ### Claim 27 (depends on 23) The apparatus of claim 23, wherein the instructions to receive the first configured grant are executable by the one or more processors to cause the apparatus to: receive the first configured grant in a downlink control information format that indicates that the first UE is the transmitter. ### Claim 28 (depends on 23) The apparatus of claim 23, wherein the first configured grant comprises a cyclic redundancy check field scrambled with a radio network temporary identifier that indicates that the first UE is the transmitter. ### Claim 29 An apparatus for wireless communications at a first user equipment (UE), comprising: means for receiving, from a network entity, a configured grant pair configuration indicating: a sidelink semi-persistent scheduling resource allocation for a sidelink channel for communicating with a second UE, and a first configured grant for the first UE and a second configured grant for the second UE, wherein the first configured grant and the second configured grant, of a configured grant pair, each indicate: an activation of the sidelink semi-persistent scheduling resource allocation for communication between the first UE and the second UE via the sidelink channel, which of the first UE or the second UE is a transmitter for communication between the first UE and the second UE on the sidelink channel, and which of the first UE or the second UE is a receiver for communication between the first UE and the second UE on the sidelink channel; means for receiving, from the network entity, the first configured grant of the configured grant pair based at least in part on the configured grant pair configuration; and means for communicating with the second UE on the sidelink channel according to the sidelink semi-persistent scheduling resource allocation based at least in part on the first configured grant. ### Claim 30 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: receive, from a network entity, a configured grant pair configuration indicating: a sidelink semi-persistent scheduling resource allocation for a sidelink channel for communicating with a second UE, and a first configured grant for the first UE and a second configured grant for the second UE, wherein the first configured grant and the second configured grant, of a configured grant pair, each indicate: an activation of the sidelink semi-persistent scheduling resource allocation for communication between the first UE and the second UE via the sidelink channel, which of the first UE or the second UE is a transmitter for communication between the first UE and the second UE on the sidelink channel, and which of the first UE or the second UE is a receiver for communication between the first UE and the second UE on the sidelink channel; receive, from the network entity, the first configured grant of the configured grant pair based at least in part on the configured grant pair configuration; and communicate with the second UE on the sidelink channel according to the sidelink semi-persistent scheduling resource allocation based at least in part on the first configured grant.