# US 11,444,714 B2 · Method for detecting synchronization signal block, and method, apparatus and system for transmitting synchronization signal block > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,714 B2 - Document ID: US11444714B2 - Status: Granted - Kind: B2 - Application number: 17/101,541 - Filed: 2020-11-23 - Published: 2021-03-11 - Granted: 2022-09-13 - Earliest claimed: 2020-11-23 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Zhi Zhang - Web page: https://patentgrep.com/patent/US11444714B2 ## CPC - H04J 11/0073: {Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group} - H04W 56/0015: {one node acting as a reference for the others} - H04J 11/0076: {Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group} - H04J 11/0079: {Acquisition of downlink reference signals, e.g. detection of cell-ID} - 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) - 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 is related to a terminal device and a network device. The terminal device includes: a receiver configured to receive a first synchronization signal block transmitted by an access network device, wherein the first synchronization signal block comprises a physical broadcast channel (PBCH); and a processor configured to determine a location of a frequency resource of a second synchronization signal block according to preset information comprised in the physical broadcast channel (PBCH), wherein the first synchronization signal block and the second synchronization signal block carry same information. ## Claims ### Claim 1 A terminal device, comprising: a receiver configured to receive a first synchronization signal block transmitted by an access network device, wherein the first synchronization signal block comprises a physical broadcast channel (PBCH), a primary synchronization signal (PSS), and a secondary synchronization signal (SSS); and a processor configured to determine a location of a frequency resource of a second synchronization signal block according to preset information comprised in the physical broadcast channel (PBCH), wherein the second synchronization signal block comprises a physical broadcast channel (PBCH), a primary synchronization signal (PSS), and a secondary synchronization signal (SSS); wherein the preset information comprises a frequency domain interval between the first synchronization signal block and the second synchronization signal block; wherein the processor is configured to: determine a frequency domain location of the second synchronization signal block according to a frequency domain location of the first synchronization signal block and the frequency domain interval between the first synchronization signal block and the second synchronization signal block. ### Claim 2 (depends on 1) The terminal device according to claim 1, wherein the processor is configured to detect the second synchronization signal block. ### Claim 3 A terminal device, comprising: a receiver configured to receive a first synchronization signal block transmitted by an access network device; wherein the first synchronization signal block comprises a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a synchronization channel; and a processor configured to determine a location of a time-frequency resource of a second synchronization signal block according to preset information comprised in the first synchronization signal block, wherein the first synchronization signal block and the second synchronization signal block are sent using a same beam. ### Claim 4 (depends on 3) The terminal device according to claim 3, wherein the processor is configured to detect the second synchronization signal block. ### Claim 5 (depends on 3) The terminal device according to claim 3, wherein the preset information comprises: a transmission period of synchronization signal blocks. ### Claim 6 (depends on 3) The terminal device according to claim 3, wherein the preset information comprises a transmission period of a synchronization signal block set in which the first synchronization signal block is located. ### Claim 7 (depends on 6) The terminal device according to claim 6, wherein the first synchronization signal block set comprises at least one group of synchronization signal blocks. ### Claim 8 (depends on 7) The terminal device according to claim 7, wherein the processor is configured to: determine the transmission period as a time domain interval between the first synchronization signal block and the second synchronization signal block. ### Claim 9 (depends on 8) The terminal device according to claim 8, wherein the time domain interval is at least one of a number of sub-frames, number of slots, number of mini-slots, or number of orthogonal frequency division multiplexing (OFDM) symbols. ### Claim 10 (depends on 8) The terminal device according to claim 8, wherein the processor is further configured to: determine a time domain location of the second synchronization signal block according to the time domain interval and a time domain location of the first synchronization signal block. ### Claim 11 (depends on 3) The terminal device according to claim 3, wherein the preset information comprises a first time domain index of the first synchronization signal block, and the first time domain index indicates a time domain location of the first synchronization signal block. ### Claim 12 (depends on 11) The terminal device according to claim 11, wherein the first time domain index is an index of the first synchronization signal block in a synchronization signal block set. ### Claim 13 (depends on 12) The terminal device according to claim 12, wherein the synchronization signal block set comprises at least one group of synchronization signal blocks, and a time domain resource is a sub-frame, a time slot, a mini-slot or an orthogonal frequency division multiplexing OFDM symbol. ### Claim 14 (depends on 11) The terminal device according to claim 11, wherein the first time domain index is an index of synchronization signal block among all synchronization signal blocks located in a radio frame, a sub-frame, or a time slot where the first synchronization signal block is located in. ### Claim 15 (depends on 11) The terminal device according to claim 11, wherein the processor is further configured to: perform joint detection of a first synchronization signal in the first synchronization signal block and a second synchronization signal in the second synchronization signal block. ### Claim 16 (depends on 11) The terminal device according to claim 11, wherein the processor is further configured to: perform joint detection of a first synchronization channel in the first synchronization signal block and a second synchronization channel in the second synchronization signal block. ### Claim 17 (depends on 11) The terminal device according to claim 11, wherein the processor is configured to: calculate a second time domain index corresponding to the second synchronization signal block according to the first time domain index and a pre-agreed index interval. ### Claim 18 (depends on 17) The terminal device according to claim 17, wherein the processor is further configured to: determine a time domain location of the second synchronization signal block according to the second time domain index. ### Claim 19 A network device, comprising: a transmitter configured to transmit a first synchronization signal block to a terminal, wherein the first synchronization signal block comprises a physical broadcast channel (PBCH), a primary synchronization signal (PSS), and a secondary synchronization signal (SSS), and a processor configured to determine a location of a frequency resource of a second synchronization signal block according to preset information comprised in the PBCH; wherein the transmitter is further configured to transmit the second synchronization signal block to the terminal; wherein the preset information comprises a frequency domain interval between the first synchronization signal block and the second synchronization signal block; wherein the processor is configured to: determine a frequency domain location of the second synchronization signal block according to a frequency domain location of the first synchronization signal block and the frequency domain interval between the first synchronization signal block and the second synchronization signal block.