# US 12,015,991 B2 · Method and device for generating sidelink synchronization signal block in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,991 B2 - Document ID: US12015991B2 - Status: Granted - Kind: B2 - Application number: 17/593,938 - Filed: 2020-03-27 - Published: 2022-06-23 - Granted: 2024-06-18 - Earliest claimed: 2019-03-29 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Woosuk Ko; Hanbyul Seo; Seungmin Lee - Web page: https://patentgrep.com/patent/US12015991B2 ## CPC - H04W 56/001: {Synchronization between nodes} - H04J 11/00: Orthogonal multiplex systems, {e.g. using WALSH codes}(H04J13/00 takes precedence) - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 52/52: using AGC [Automatic Gain Control] circuits or amplifiers - H04W 56/00: Synchronisation arrangements - 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) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Proposed is a method for a first device to perform wireless communication. The method may include a step for generating a sidelink synchronization signal block (S-SSB) including a sidelink primary synchronization signal (SPSS), a sidelink secondary synchronization signal (SSSS), and a sidelink physical broadcast channel (PSBCH), and transmitting the S-SSB to a second device. For example, at least one of an SPSS-related symbol period, an SSSS-related symbol period, or a PSBCH-related symbol period may include a transition period. For example, the transition period may be determined on the basis of at least one of the priority of the SPSS, the priority of the SSSS, or the priority of the PSBCH. ## Claims ### Claim 1 A method for performing wireless communication by a first device, the method comprising: generating a sidelink synchronization signal block (S-SSB) including a sidelink primary synchronization signal (SPSS), a sidelink secondary synchronization signal (SSSS) and a sidelink physical broadcast channel (PSBCH); and transmitting, to a second device, the S-SSB, wherein at least one of a symbol period related to the SPSS, a symbol period related to the SSSS, or a symbol period related to the PSBCH includes a transition period, wherein the transition period is determined based on at least one of a priority of the SPSS, a priority of the SSSS, or a priority of the PSBCH, and wherein, based on an existence of an automatic gain control (AGC) symbol period before a symbol period related to a first SPSS, the transition period is determined in a part of the AGC symbol period. ### Claim 2 (depends on 1) The method of claim 1, further comprising: determining a length of the transition period based on a sub-carrier spacing related to a resource through which the S-SSB is transmitted. ### Claim 3 (depends on 1) The method of claim 1, wherein, based on the priority of the SPSS being higher than the priority of the PSBCH, the transition period is determined in a part of the symbol period related to the PSBCH. ### Claim 4 (depends on 3) The method of claim 3, wherein, based on the transition period being the part of the symbol period related to the PSBCH, the symbol period related to the PSBCH does not include a demodulation reference signal (DM-RS). ### Claim 5 (depends on 1) The method of claim 1, wherein, based on the priority of the SPSS and the priority of the PSBCH being a same, the transition period is determined to be half of the symbol period related to the SPSS and half of the symbol period related to the PSBCH. ### Claim 6 (depends on 1) The method of claim 1, wherein, based on the priority of the PSBCH being higher than the priority of the SPSS, the transition period is determined in a part of the symbol period related to the SPSS. ### Claim 7 (depends on 6) The method of claim 6, wherein, based on the transition period being the part of the symbol period related to the SPSS, a symbol related to the SPSS is further included in the S-SSB. ### Claim 8 (depends on 1) The method of claim 1, wherein, based on the priority of the SPSS being a same as the priority of the SSSS, the transition period is determined to be half of the symbol period related to the SPSS and half of the symbol period related to the SSSS, and wherein the transition period is determined based on absence of the symbol period related to the PSBCH between the symbol period related to the SPSS and the symbol period related to the SSSS. ### Claim 9 (depends on 1) The method of claim 1, wherein, based on the priority of the SPSS, the priority of the SSSS and the priority of the PSBCH being a same, the transition period is determined to be half of the symbol period related to the SPSS, half of the symbol period related to the SSSS, or half of the symbol period related to the PSBCH. ### Claim 10 (depends on 1) The method of claim 1, wherein, based on the priority of the PSBCH being higher than the priority of the SPSS and the priority of the SSSS, the transition period is determined in a part of the symbol period related to the SPSS and a part of the symbol period related to the SSSS. ### Claim 11 (depends on 1) The method of claim 1, wherein, based on the priority of the SPSS being higher than the priority of the SSSS, a first transition period is determined in a part of the symbol period related to the SSSS, wherein, based on the priority of the SSSS being higher than the priority of the PSBCH, a second transition period is determined in a part of the symbol period related to the PSBCH, wherein the first transition period is a transition period between the symbol period related to the SPSS and the symbol period related to the SSSS, and wherein the second transition period is a transition period between the symbol period related to the SSSS and the symbol period related to the PSBCH. ### Claim 12 (depends on 1) The method of claim 1, wherein, based on the priority of the SPSS being higher than the priority of the SSSS, the transition period is determined in a part of the symbol period related to the SSSS, and wherein the transition period is determined based on absence of the symbol period related to the PSBCH between the symbol period related to the SPSS and the symbol period related to the SSSS. ### Claim 13 An apparatus configured to control a first user equipment (UE), the apparatus comprising: one or more processors; and one or more memories operably connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to: generate a sidelink synchronization signal block (S-SSB) including a sidelink primary synchronization signal (SPSS), a sidelink secondary synchronization signal (SSSS) and a sidelink physical broadcast channel (PSBCH); and transmit, to a second UE, the S-SSB, wherein at least one of a symbol period related to the SPSS, a symbol period related to the SSSS, or a symbol period related to the PSBCH includes a transition period, wherein the transition period is determined based on at least one of a priority of the SPSS, a priority of the SSSS, or a priority of the PSBCH, and wherein, based on an existence of an automatic gain control (AGC) symbol period before a symbol period related to a first SPSS, the transition period is determined in a part of the AGC symbol period. ### Claim 14 A first device configured to perform wireless communication, the first device comprising: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to: generate a sidelink synchronization signal block (S-SSB) including a sidelink primary synchronization signal (SPSS), a sidelink secondary synchronization signal (SSSS) and a sidelink physical broadcast channel (PSBCH); and transmit, to a second device, the S-SSB, wherein at least one of a symbol period related to the SPSS, a symbol period related to the SSSS, or a symbol period related to the PSBCH includes a transition period, wherein the transition period is determined based on at least one of a priority of the SPSS, a priority of the SSSS, or a priority of the PSBCH, and wherein, based on an existence of an automatic gain control (AGC) symbol period before a symbol period related to a first SPSS, the transition period is determined in a part of the AGC symbol period. ### Claim 15 (depends on 14) The first device of claim 14, wherein, based on the priority of the SPSS being higher than the priority of the PSBCH, the transition period is determined in a part of the symbol period related to the PSBCH. ### Claim 16 (depends on 15) The first device of claim 15, wherein, based on the transition period being the part of the symbol period related to the PSBCH, the symbol period related to the PSBCH does not include a demodulation reference signal (DM-RS). ### Claim 17 (depends on 14) The first device of claim 14, wherein, based on the priority of the SPSS and the priority of the PSBCH being a same, the transition period is determined to be half of the symbol period related to the SPSS and half of the symbol period related to the PSBCH. ### Claim 18 (depends on 14) The first device of claim 14, wherein, based on the priority of the PSBCH being higher than the priority of the SPSS, the transition period is determined in a part of the symbol period related to the SPSS. ### Claim 19 (depends on 18) The first device of claim 18, wherein, based on the transition period being the part of the symbol period related to the SPSS, a symbol related to the SPSS is further included in the S-SSB.