# US 11,910,334 B2 · Method and device for transmitting synchronization indication information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,334 B2 - Document ID: US11910334B2 - Status: Granted - Kind: B2 - Application number: 17/212,412 - Filed: 2021-03-25 - Published: 2021-07-08 - Granted: 2024-02-20 - Earliest claimed: 2018-09-27 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Yang Liu - Web page: https://patentgrep.com/patent/US11910334B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 56/001: {Synchronization between nodes} - H04L 1/1642: {Formats specially adapted for sequence numbers} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/30: Resource management for broadcast services - H04W 48/12: using downlink control channel - H04W 56/0015: {one node acting as a reference for the others} - 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 A method for transmitting synchronization indication information includes: determining, in alternative offset transmission positions, an actual offset transmission position of a synchronization signal and physical broadcast channel block (SSB) to be transmitted; generating actual sending position indication information according to the actual offset transmission position; and transmitting the SSB at the actual offset transmission position, and transmitting the actual sending position indication information through a physical broadcast channel (PBCH). ## Claims ### Claim 1 A method for transmitting synchronization indication information, the method being applied to a base station and comprising: determining, in alternative offset transmission positions, an actual offset transmission position of a synchronization signal and physical broadcast channel block (SSB) to be transmitted; generating actual sending position indication information according to the actual offset transmission position; and transmitting the SSB at the actual offset transmission position, and transmitting the actual sending position indication information through a physical broadcast channel (PBCH), wherein, when a first offset transmission position of the SSB in the alternative offset transmission positions is configured to be unfixed, the actual sending position indication information comprises a sequence number of the SSB and a sequence number of the actual offset transmission position in the alternative offset transmission positions. ### Claim 2 (depends on 1) The method of claim 1, wherein, when the first offset transmission position of the SSB in the alternative offset transmission positions is configured to be fixed, the actual sending position indication information comprises a slot block sequence number. ### Claim 3 (depends on 2) The method of claim 2, wherein the slot block sequence number occupies two remaining information bits in the PBCH. ### Claim 4 (depends on 3) The method of claim 3, wherein, when a maximum number of SSBs in a transmission unit is 4 or 8, the slot block sequence number occupies two reserved bits A6 and A7 of an SSB sequence number in the PBCH. ### Claim 5 (depends on 1) The method of claim 1, wherein the sequence number of the actual offset transmission position in the alternative offset transmission positions is determined by one of: jointly numbering a system transmission position and the alternative offset transmission positions; sequentially numbering the alternative offset transmission positions; or including, in the sequence number of the actual offset transmission position, a slot block sequence number and a position number in a slot block. ### Claim 6 (depends on 1) The method of claim 1, wherein the sequence number of the SSB and the sequence number of the actual offset transmission position in the alternative offset transmission positions occupy six remaining information bits that are provided by a PBCH and a demodulation reference signal (DMRS) sequence. ### Claim 7 (depends on 6) The method of claim 6, wherein the sequence number of the SSB and the sequence number of the actual offset transmission position in the alternative offset transmission positions occupy three reserved bits A5, A6 and A7 of the SSB sequence number in the PBCH and occupy lower three bits in the DMRS sequence. ### Claim 8 (depends on 7) The method of claim 7, wherein the sequence number of the SSB and the sequence number of the actual offset transmission position in the alternative offset transmission positions further occupy two reserved bits in remaining minimum system information (RMSI) or two reserved bits in the SSB transmitted in a frequency division multiplexing mode (SSB-FDM). ### Claim 9 (depends on 8) The method of claim 8, wherein, when the two reserved bits in the RMSI or the two reserved bits in the SSB-FDM are not occupied by the sequence number of the actual offset transmission position in the alternative offset transmission positions, values of the two reserved bits in the RMSI or the two reserved bits in the SSB-FDM are preset invalid values. ### Claim 10 (depends on 7) The method of claim 7, wherein, when a maximum number of SSBs in a transmission unit is 4, the sequence number of the SSB occupies two reserved bits in the three reserved bits A5, A6 and A7 of the SSB sequence number in the PBCH, and the sequence number of the actual offset transmission position in the alternative offset transmission positions occupies a remaining one reserved bit in the three reserved bits A5, A6 and A7 and the lower three bits in the DMRS sequence; and when the maximum number of SSBs in a transmission unit is 8, the sequence number of the SSB occupies the three reserved bits A5, A6 and A7 of the SSB sequence number in the PBCH, and the sequence number of the actual offset transmission position in the alternative offset transmission positions occupies the lower three bits in the DMRS sequence or also occupies two reserved bits in remaining minimum system information (RMSI) or two reserved bits in the SSB transmitted in a frequency division multiplexing mode (SSB-FDM). ### Claim 11 (depends on 1) The method of claim 1, wherein the actual sending position indication information occupies eight bits. ### Claim 12 A method for transmitting synchronization indication information, the method being applied to user equipment and comprising: receiving a synchronization signal and physical broadcast channel block (SSB), and actual sending position indication information transmitted through a physical broadcast channel (PBCH); and performing synchronization processing according to the actual sending position indication information, wherein the actual sending position indication information is generated according to an actual offset transmission position in alternative offset transmission positions; and when a first offset transmission position of the SSB in the alternative offset transmission positions is configured to be unfixed, the actual sending position indication information comprises a sequence number of the SSB and a sequence number of the actual offset transmission position in the alternative offset transmission positions. ### Claim 13 A base station, comprising: a processor; and a memory storing instructions executable by the processor, wherein the processor is configured to: determine, in alternative offset transmission positions, an actual offset transmission position of a synchronization signal and physical broadcast channel block (SSB) to be transmitted; generate actual sending position indication information according to the actual offset transmission position; and transmit the SSB at the actual offset transmission position and transmit the actual sending position indication information through a physical broadcast channel (PBCH), wherein, when a first offset transmission position of the SSB in the alternative offset transmission positions is configured to be unfixed, the actual sending position indication information comprises a sequence number of the SSB and a sequence number of the actual offset transmission position in the alternative offset transmission positions. ### Claim 14 (depends on 13) The base station of claim 13, wherein, when the first offset transmission position of the SSB in the alternative offset transmission positions is configured to be fixed, the actual sending position indication information comprises a slot block sequence number. ### Claim 15 (depends on 14) The base station of claim 14, wherein the slot block sequence number occupies two remaining information bits in the PBCH. ### Claim 16 (depends on 15) The base station of claim 15, wherein, when a maximum number of SSBs in a transmission unit is 4 or 8, the slot block sequence number occupies two reserved bits A6 and A7 of an SSB sequence number in the PBCH. ### Claim 17 (depends on 13) The base station of claim 13, wherein the sequence number of the actual offset transmission position in the alternative offset transmission positions is determined by one of: jointly numbering a system transmission position and the alternative offset transmission positions; sequentially numbering the alternative offset transmission positions; or including, in the sequence number of the actual offset transmission position, a slot block sequence number and a position number in a slot block. ### Claim 18 (depends on 13) The base station of claim 13, wherein the sequence number of the SSB and the sequence number of the actual offset transmission position in the alternative offset transmission positions occupy six remaining information bits that are provided by a PBCH and a demodulation reference signal (DMRS) sequence.