# US 12,192,959 B2 · Method executed by user equipment, and user equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,959 B2 - Document ID: US12192959B2 - Status: Granted - Kind: B2 - Application number: 17/416,652 - Filed: 2019-12-18 - Published: 2022-02-10 - Granted: 2025-01-07 - Earliest claimed: 2018-12-21 - Assignees: Sharp Kabushiki Kaisha - Applicants: Sharp Kabushiki Kaisha - Inventors: Yinan Zhao; Renmao Liu; Chao Luo - Web page: https://patentgrep.com/patent/US12192959B2 ## CPC - H04L 5/1469: {using time-sharing} - H04W 72/02: Selection of wireless resources by user or terminal - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/143: {for modulated signals (H04L5/1469 takes precedence)} - H04W 48/10: using broadcasted information - H04W 48/12: using downlink control channel - H04W 72/044: based on the type of the allocated resource - H04W 72/20: Control channels or signalling for resource management - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 92/18: between terminal devices - 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 The present disclosure provides a method executed by a user equipment, and a user equipment. The method includes receiving system information from a base station, the system information including time division duplexing (TDD) configuration information; and transmitting sidelink communication system information including sidelink TDD configuration information. ## Claims ### Claim 1 A method performed by a user equipment, the method comprising: receiving system information from a base station, the system information including time division duplexing (TDD) configuration information; selecting a synchronization source from a plurality of sources, including the base station and another user equipment, based on a priority criterion, wherein a priority of the base station is higher than a priority of the other user equipment; transmitting sidelink communication system information, including sidelink TDD configuration information, based on the synchronization source; and performing a sidelink communication based on the synchronization source, wherein: the sidelink communication system information further includes indication information indicating the synchronization source selected by the user equipment, and the indication information is indicated by at least one of an indication field in the sidelink communication system information, physical sidelink broadcast channel (PSBCH) scrambling or generation of scrambling sequences, and demodulation reference signal (DMRS) sequences for a PSBCH channel estimation. ### Claim 2 (depends on 1) The method according to claim 1, wherein the synchronization source comprises an evolved base station (eNB) or a new radio (NR) base station (gNB). ### Claim 3 (depends on 2) The method according to claim 2, wherein in a case that the synchronization source, indicated by indication information, is the eNB, the indication information further indicates that the sidelink TDD configuration information in the sidelink communication system information is interpreted based on Long Term Evolution (LTE) TDD configuration information. ### Claim 4 (depends on 1) The method according to claim 1, wherein the sidelink communication system information further includes indication information, and the indication information is used for the other user equipment that receives the sidelink communication system information to determine a priority for selecting the synchronization source. ### Claim 5 (depends on 1) The method according to claim 1, wherein the sidelink TDD configuration information includes one or two configuration patterns, and the one or two configuration patterns include: at least one of a configuration periodicity and a starting subframe number or a slot number corresponding to the configuration periodicity, or a number of subframes or slots of a sidelink resource. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: configuring a periodicity of a TDD configuration pattern based on a value of a configuration periodicity included in the TDD configuration information, wherein the value of the configuration periodicity includes 6 ms. ### Claim 7 A user equipment, comprising: at least one processor; and at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the user equipment to: receive system information from a base station, the system information including time division duplexing (TDD) configuration information; select a synchronization source from a plurality of sources, including the base station and another user equipment, based on a priority criterion, wherein a priority of the base station is higher than a priority of the other user equipment; transmit sidelink communication system information, including sidelink TDD configuration information, based on the synchronization source; and perform a sidelink communication based on the synchronization source, wherein: the sidelink communication system information further includes indication information indicating the synchronization source selected by the user equipment, and the indication information is indicated by at least one of an indication field in the sidelink communication system information, physical sidelink broadcast channel (PSBCH) scrambling or generation of scrambling sequences, and demodulation reference signal (DMRS) sequences for a PSBCH channel estimation. ### Claim 8 (depends on 7) The user equipment according to claim 7, wherein the synchronization source comprises an evolved base station (eNB) or a new radio (NR) base station (gNB). ### Claim 9 (depends on 8) The user equipment according to claim 8, wherein in a case that the synchronization source indicated by indication information is the eNB, the indication information further indicates that the sidelink TDD configuration information in the sidelink communication system information is interpreted based on Long Term Evolution (LTE) TDD configuration information. ### Claim 10 (depends on 7) The user equipment according to claim 7, wherein the sidelink communication system information further includes indication information, and the indication information is used for the other user equipment that receives the sidelink communication system information to determine a priority for selecting the synchronization source. ### Claim 11 (depends on 7) The user equipment according to claim 7, wherein the sidelink TDD configuration information includes one or two configuration patterns, and the one or two configuration patterns include: at least one of a configuration periodicity and a starting subframe number or a slot number corresponding to the configuration periodicity, or a number of subframes or slots of a sidelink resource. ### Claim 12 (depends on 7) The user equipment according to claim 7, the operations further comprising: configuring a periodicity of a TDD configuration pattern based on a value of a configuration periodicity included in the TDD configuration information, wherein the value of the configuration periodicity includes 6 ms.