# US 2019/0320399 A1 · Method and device for synchronization > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0320399 A1 - Document ID: US20190320399A1 - Status: Published application - Kind: A1 - Application number: 16/453,658 - Filed: 2019-06-26 - Published: 2019-10-17 - Earliest claimed: 2017-08-11 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Jianfeng WANG; Zhipeng LIN - Web page: https://patentgrep.com/patent/US20190320399A1 ## CPC - H04W 56/001: {Synchronization between nodes} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04W 56/005: {compensating for timing error by adjustment in the receiver} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04L 1/0071: {Use of interleaving (interleaving per se H03M13/27)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for synchronization in a wireless system. In the method, a physical broadcast channel (PBCH) includes one or more bits, wherein the one or more bits indicate additional system information when a frequency of the wireless system is within a frequency range up to a predefined frequency and indicate a location of a slot group in a synchronization signal burst set when the frequency of the wireless system is above the predefined frequency, and wherein the slot group comprises at least one synchronization signal block and the synchronization signal burst set includes the slot group. ## Claims ### Claim 1 A method in a base station for synchronization in a wireless system comprising: transmitting a physical broadcast channel (PBCH) including one or more bits, wherein the one or more bits indicate additional system information when a frequency of the wireless system is within a frequency range up to a predefined frequency and indicate a location of a slot group in a synchronization signal burst set when the frequency of the wireless system is above the predefined frequency, wherein the slot group comprises at least one synchronization signal block and the synchronization signal burst set includes the slot group. ### Claim 2 (depends on 1) The method according to claim 1 wherein the PBCH is interleaved with a downlink pilot signal sequence which carries one or more bits indicating a location of the at least one synchronization signal block within the slot group. ### Claim 3 (depends on 1) The method according to claim 1, wherein the additional system information comprises a frame number offset of a coexisting system relative to the wireless system. ### Claim 4 (depends on 1) The method according to claim 1, wherein the additional system information comprises system information of a neighbor cell in a coexisting system. ### Claim 5 (depends on 4) The method according to claim 4 wherein the system information of a neighbor cell in the coexisting system comprises an identifier of the neighbor cell. ### Claim 6 (depends on 1) The method according to claim 1, wherein the additional system information comprises configuration information of a synchronization signal burst set of a neighbor cell in the wireless system, and an indication related to synchronization information in the wireless system. ### Claim 7 (depends on 6) The method according to claim 6 wherein the configuration information of the synchronization signal burst set of the neighbor cell in the wireless system comprises a number of the synchronization signal blocks actually transmitted in the neighbor cell and periodicity of the synchronization signal burst set. ### Claim 8 (depends on 1) The method according to claim 1 wherein the one or more bits are included in a payload of the PBCH and wherein the one or more bits are the most significant bits of the payload. ### Claim 9 (depends on 1) The method according to claim 1 wherein the predefined frequency is 6 GHz. ### Claim 10 A base station in a wireless system comprising: a processor; and a memory, the memory containing instructions which, when executed by the processor, are capable of causing the base station to: transmit a physical broadcast channel (PBCH) including one or more bits, wherein the one or more bits indicate additional system information when a frequency of the wireless system is within a frequency range up to a predefined frequency and indicate a location of a slot group in a synchronization signal burst set when the frequency of the wireless system is above the predefined frequency, wherein the slot group comprises at least one synchronization signal block and the synchronization signal burst set includes the slot group. ### Claim 11 (depends on 10) The base station according to claim 10, wherein the PBCH is interleaved with a downlink pilot signal sequence which carries one or more bits indicating a location of the at least one synchronization signal block within the slot group. ### Claim 12 A method in a terminal device for synchronization in a wireless system comprising: receiving a physical broadcast channel (PBCH) including one or more bits from a base station, wherein the one or more bits indicate additional system information when a frequency of the wireless system is within a frequency range up to a predefined frequency and indicate a location of a slot group in a synchronization signal burst set when the frequency of the wireless system is above the predefined frequency, wherein the slot group comprises at least one synchronization signal block and the synchronization signal burst set includes the slot group. ### Claim 13 (depends on 12) The method according to claim 12, wherein the PBCH is interleaved with a downlink pilot signal sequence carrying one or more bits indicating a location of the at least one synchronization signal block within the slot group. ### Claim 14 (depends on 12) The method according to claim 12, wherein the additional system information comprises a frame number offset of a coexisting system relative to the wireless system. ### Claim 15 (depends on 12) The method according to claim 12 wherein the additional system information comprises system information of a neighbor cell in a coexisting system. ### Claim 16 (depends on 15) The method according to claim 15 wherein the system information of a neighbor cell in the coexisting system comprises an identifier of the neighbor cell. ### Claim 17 (depends on 12) The method according to claim 12 wherein the additional system information comprises configuration information of the synchronization signal burst set of a neighbor cell in the wireless system. ### Claim 18 (depends on 17) The method according to claim 17 wherein the configuration information of the synchronization signal burst set of a neighbor cell in the wireless system comprises a number of the synchronization signal blocks actually transmitted in the neighbor cell and periodicity of the synchronization signal burst set. ### Claim 19 (depends on 12) The method according to claim 12, wherein the additional system information comprises an indication related to synchronization information in the wireless system. ### Claim 20 (depends on 12) The method according to claim 12 wherein the one or more bits are included in a payload of the PBCH and wherein the one or more bits are the most significant bits of the payload. ### Claim 21 (depends on 12) The method according to claim 12 wherein the predefined frequency is 6 GHz. ### Claim 22 A terminal device in a wireless system comprising: a processor; and a memory, the memory containing instructions which, when executed by the processor, are capable of causing the terminal device to: receive a physical broadcast channel (PBCH) including one or more bits from a base station, wherein the one or more bits indicate additional system information when a frequency of the wireless system is within a frequency range up to a predefined frequency and indicate a location of a slot group in a synchronization signal burst set when the frequency of the wireless system is above the predefined frequency, wherein the slot group comprises at least one synchronization signal block and the synchronization signal burst set includes the slot group. ### Claim 23 (depends on 22) The terminal device according to claim 22, wherein the PBCH is interleaved with a downlink pilot signal sequence carrying one or more bits indicating a location of the at least one synchronization signal block within the slot group.