# US 2022/0046598 A1 · 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 2022/0046598 A1 - Document ID: US20220046598A1 - Status: Published application - Kind: A1 - Application number: 17/416,652 - Filed: 2019-12-18 - Published: 2022-02-10 - Earliest claimed: 2018-12-21 - Assignees: Sharp Kabushiki Kaisha; FG Innovation Company Limited - Applicants: Sharp Kabushiki Kaisha; FG Innovation Company Limited - Inventors: Yinan Zhao; RENMAO LIU; CHAO LUO - Web page: https://patentgrep.com/patent/US20220046598A1 ## 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 executed by a user equipment, comprising: 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. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: selecting a synchronization source on a frequency domain resource that performs a sidelink communication. ### Claim 3 (depends on 2) The method according to claim 2, wherein the sidelink communication system information further includes indication information indicating the synchronization source selected by the user equipment. ### Claim 4 (depends on 3) The method according to claim 3, wherein 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 PSBCH channel estimation. ### Claim 5 (depends on 3) The method according to claim 3, wherein the synchronization source is an evolved base station (eNB) or a new radio (NR) base station (gNB). ### Claim 6 (depends on 5) The method according to claim 5, wherein in a case that the synchronization source indicated by the indication information is the eNB, the indication information further indicates that the sidelink TDD configuration information in the sidelink communication system information is interpreted according to Long Term Evolution (LTE) TDD configuration information. ### Claim 7 (depends on 2) The method according to claim 2, wherein the sidelink communication system information further includes indication information, and the indication information is used for another user equipment that receives the sidelink communication system information to determine a priority for selecting the synchronization source. ### Claim 8 (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 9 (depends on 1) The method according to claim 1, further comprising: configuring a periodicity of a TDD configuration pattern according to a value of a configuration periodicity included in the TDD configuration information, wherein the value of the configuration periodicity includes 6 ms. ### Claim 10 A user equipment, comprising: a processor; and a memory configured to store instructions, wherein the instructions, when executed by the processor, cause the user equipment to perform operations comprising: 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. ### Claim 11 (depends on 10) The user equipment according to claim 10, the operations further comprising: selecting a synchronization source on a frequency domain resource that performs a sidelink communication. ### Claim 12 (depends on 11) The user equipment according to claim 11, wherein the sidelink communication system information further includes indication information indicating the synchronization source selected by the user equipment. ### Claim 13 (depends on 12) The user equipment according to claim 12, wherein 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 PSBCH channel estimation. ### Claim 14 (depends on 12) The user equipment according to claim 12, wherein the synchronization source is an evolved base station (eNB) or a new radio (NR) base station (gNB). ### Claim 15 (depends on 14) The user equipment according to claim 14, wherein in a case that the synchronization source indicated by the indication information is the eNB, the indication information further indicates that the sidelink TDD configuration information in the sidelink communication system information is interpreted according to Long Term Evolution (LTE) TDD configuration information. ### Claim 16 (depends on 11) The user equipment according to claim 11, wherein the sidelink communication system information further includes indication information, and the indication information is used for another user equipment that receives the sidelink communication system information to determine a priority for selecting the synchronization source. ### Claim 17 (depends on 10) The user equipment according to claim 10, 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 18 (depends on 10) The user equipment according to claim 10, the operations further comprising: configuring a periodicity of a TDD configuration pattern according to a value of a configuration periodicity included in the TDD configuration information, wherein the value of the configuration periodicity includes 6 ms.