# US 12,016,065 B2 · Discovery and measurement timing configurations for new radio sidelink communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,016,065 B2 - Document ID: US12016065B2 - Status: Granted - Kind: B2 - Application number: 17/454,858 - Filed: 2021-11-15 - Published: 2023-05-18 - Granted: 2024-06-18 - Earliest claimed: 2021-11-15 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Yisheng Xue; Xiaoxia Zhang; Jing Sun; Chih-Hao Liu - Web page: https://patentgrep.com/patent/US12016065B2 ## CPC - H04W 76/14: Direct-mode setup - H04B 7/06954: {Sidelink beam training with support from third instance, e.g. the third instance being a base station} - H04L 1/0026: {Transmission of channel quality indication} - H04L 5/0023: {Time-frequency-space} - 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 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 56/001: {Synchronization between nodes} - H04W 72/20: Control channels or signalling for resource management - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04W 92/18: between terminal devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a first sidelink user equipment (UE) may include establishing, with a second sidelink UE, a beamformed link, transmitting, to the second sidelink UE, a periodic discovery and measurement timing (DMTC) configuration via the beamformed link, and transmitting, to the second sidelink UE, a periodic beacon signal based on the DMTC configuration. ## Claims ### Claim 1 A method of wireless communication performed by a first sidelink user equipment (UE), the method comprising: establishing, with a second sidelink UE, a beamformed link; transmitting, to the second sidelink UE, a periodic discovery and measurement timing (DMTC) configuration via the beamformed link; transmitting, to the second sidelink UE, a plurality of transport blocks (TBs) via the beamformed link; receiving, from the second sidelink UE, a plurality of ACK/NACK responses corresponding to the plurality of TBs; incrementing a counter in response to a NACK of the plurality of ACK/NACK responses; decreasing the counter in response to an ACK of the plurality of ACK/NACK responses; transmitting, to the second sidelink UE, a periodic beacon signal based on the DMTC configuration; and refraining from transmitting the periodic beacon signal in response to the counter satisfying a threshold. ### Claim 2 (depends on 1) The method of claim 1, wherein the transmitting the periodic beacon signal comprises transmitting the periodic beacon signal via a physical sidelink shared channel (PSSCH). ### Claim 3 (depends on 1) The method of claim 1, wherein: refraining from transmitting the periodic beacon signal in response to the counter satisfying a threshold comprises the counter having a value of zero. ### Claim 4 (depends on 1) The method of claim 1, wherein the transmitting the periodic beacon signal comprises transmitting the periodic beacon signal within a DMTC resource window. ### Claim 5 (depends on 1) The method of claim 1, wherein the periodic beacon signal comprises at least one of: second-stage sidelink control information (SCI-2); a sidelink channel state information reference signal (SL CSI-RS); a pointer to one or more additional DMTC configurations; or a beam status indicator associated with the beamformed link. ### Claim 6 (depends on 1) The method of claim 1, further comprising: receiving, from the second sidelink UE, a status associated with the beamformed link based on the periodic beacon signal. ### Claim 7 (depends on 1) The method of claim 1, further comprising: transmitting, to the second sidelink UE, a plurality of periodic beacon signals, wherein: the plurality of periodic beacon signals includes the periodic beacon signal; and each of the plurality of periodic beacon signals is transmitted in a different beam direction. ### Claim 8 (depends on 1) The method of claim 1, further comprising: receiving, from a base station (BS), the DMTC configuration via a configured grant. ### Claim 9 A method of wireless communication performed by a first sidelink user equipment (UE), the method comprising: establishing, with a second sidelink UE, a beamformed link; receiving, from the second sidelink UE, a periodic discovery and measurement timing (DMTC) configuration via the beamformed link; receiving, from the second sidelink UE, a periodic beacon signal based on the DMTC configuration; receiving, from the second sidelink UE, a beacon signal skip indicator; and refraining from receiving the periodic beacon signal in response to the beacon signal skip indicator. ### Claim 10 (depends on 9) The method of claim 9, wherein the receiving the periodic beacon signal comprises receiving the periodic beacon signal via a physical sidelink shared channel (PSSCH). ### Claim 11 (depends on 9) The method of claim 9, wherein the receiving the periodic beacon signal comprises receiving the periodic beacon signal within a DMTC resource window. ### Claim 12 (depends on 9) The method of claim 9, wherein the periodic beacon signal comprises at least one of: second-stage sidelink control information (SCI-2); a sidelink channel state information reference signal (SL CSI-RS); a pointer to one or more additional DMTC configurations; or a beam status indicator associated with the beamformed link. ### Claim 13 (depends on 9) The method of claim 9, further comprising: transmitting, to the second sidelink UE, a status associated with the beamformed link based on the periodic beacon signal. ### Claim 14 (depends on 9) The method of claim 9, further comprising: receiving, from the second sidelink UE, a plurality of periodic beacon signals, wherein: the plurality of periodic beacon signals includes the periodic beacon signal; and each of the plurality of periodic beacon signals is received from a different beam direction. ### Claim 15 (depends on 9) The method of claim 9, further comprising: determining a quality level associated with the periodic beacon signal; generating a beam failure indicator (BFI) based on the quality level not satisfying a threshold; and transmitting, to the second sidelink UE, the BFI via a physical sidelink shared channel (PSSCH). ### Claim 16 A first sidelink user equipment (UE) comprising: a memory; a transceiver; and at least one processor coupled to the memory and the transceiver, wherein the first sidelink UE is configured to: establish, with a second sidelink UE, a beamformed link; transmit, to the second sidelink UE, a periodic discovery and measurement timing (DMTC) configuration via the beamformed link; transmit, to the second sidelink UE, a plurality of transport blocks (TBs) via the beamformed link; receive, from the second sidelink UE, a plurality of ACK/NACK responses corresponding to the plurality of TBs; increment a counter in response to a NACK of the plurality of ACK/NACK responses; decrease the counter in response to an ACK of the plurality of ACK/NACK responses; transmit, to the second sidelink UE, a periodic beacon signal based on the DMTC configuration; and refrain from transmitting the periodic beacon signal in response to the counter satisfying a threshold. ### Claim 17 (depends on 16) The first sidelink UE of claim 16, wherein the first sidelink UE is further configured to: transmit the periodic beacon signal via a physical sidelink shared channel (PSSCH). ### Claim 18 (depends on 16) The first sidelink UE of claim 16, wherein the first sidelink UE is further configured to: refrain from transmitting the periodic beacon signal in response to the counter having a value of zero. ### Claim 19 (depends on 16) The first sidelink UE of claim 16, wherein the first sidelink UE is further configured to: transmit the periodic beacon signal within a DMTC resource window. ### Claim 20 (depends on 16) The first sidelink UE of claim 16, wherein the periodic beacon signal comprises at least one of: second-stage sidelink control information (SCI-2); a sidelink channel state information reference signal (SL CSI-RS); a pointer to one or more additional DMTC configurations; or a beam status indicator associated with the beamformed link. ### Claim 21 (depends on 16) The first sidelink UE of claim 16, wherein the first sidelink UE is further configured to: receive, from the second sidelink UE, a status associated with the beamformed link based on the periodic beacon signal. ### Claim 22 (depends on 16) The first sidelink UE of claim 16, wherein the first sidelink UE is further configured to: transmit, to the second sidelink UE, a plurality of periodic beacon signals, wherein: the plurality of periodic beacon signals includes the periodic beacon signal; and each of the plurality of periodic beacon signals is transmitted in a different beam direction. ### Claim 23 (depends on 16) The first sidelink UE of claim 16, wherein the first sidelink UE is further configured to: receive, from a base station (BS), the DMTC configuration via a configured grant. ### Claim 24 A first sidelink user equipment (UE) comprising: a memory; a transceiver; and at least one processor coupled to the memory and the transceiver, wherein the first sidelink UE is configured to: establish, with a second sidelink UE, a beamformed link; receive, from the second sidelink UE, a periodic discovery and measurement timing (DMTC) configuration via the beamformed link; receive, from the second sidelink UE, a periodic beacon signal based on the DMTC configuration; receive, from the second sidelink UE, a beacon signal skip indicator; and refrain from receiving the periodic beacon signal in response to the beacon signal skip indicator. ### Claim 25 (depends on 24) The first sidelink UE of claim 24, wherein the first sidelink UE is further configured to: receive the periodic beacon signal via a physical sidelink shared channel (PSSCH). ### Claim 26 (depends on 24) The first sidelink UE of claim 24, wherein the first sidelink UE is further configured to: receive the periodic beacon signal within a DMTC resource window. ### Claim 27 (depends on 24) The first sidelink UE of claim 24, wherein the periodic beacon signal comprises at least one of: second-stage sidelink control information (SCI-2); a sidelink channel state information reference signal (SL CSI-RS); a pointer to one or more additional DMTC configurations; or a beam status indicator associated with the beamformed link. ### Claim 28 (depends on 24) The first sidelink UE of claim 24, wherein the first sidelink UE is further configured to: transmit, to the second sidelink UE, a status associated with the beamformed link based on the periodic beacon signal. ### Claim 29 (depends on 24) The first sidelink UE of claim 24, wherein the first sidelink UE is further configured to: receive, from the second sidelink UE, a plurality of periodic beacon signals, wherein: the plurality of periodic beacon signals includes the periodic beacon signal; and each of the plurality of periodic beacon signals is received from a different beam direction. ### Claim 30 (depends on 24) The first sidelink UE of claim 24, wherein the first sidelink UE is further configured to: determine a quality level associated with the periodic beacon signal; generate a beam failure indicator (BFI) based on the quality level not satisfying a threshold; and transmit, to the second sidelink UE, the BFI via a physical sidelink shared channel (PSSCH).