# US 12,003,450 B2 · Signal transmission method and device and terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,450 B2 - Document ID: US12003450B2 - Status: Granted - Kind: B2 - Application number: 17/949,982 - Filed: 2022-09-21 - Published: 2023-01-19 - Granted: 2024-06-04 - Earliest claimed: 2018-09-20 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Zhenshan Zhao; Qianxi Lu; Huei-Ming Lin - Web page: https://patentgrep.com/patent/US12003450B2 ## CPC - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04W 56/0015: {one node acting as a reference for the others} - H04W 4/02: Services making use of location information - H04W 4/023: {using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 56/001: {Synchronization between nodes} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 68/00: User notification, e.g. alerting and paging, for incoming communication, change of service or the like - 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 Embodiments of the application provide a signal transmission method and device and a terminal performing the signal transmission method. The method comprises: a first terminal determining a first time point, and the first terminal sending a first signal at the first time point, the first signal being a positioning reference signal, thereby assisting other terminals in positioning, and improving the positioning accuracy between the terminals. ## Claims ### Claim 1 A signal transmission method, comprising: determining, by a first terminal, a first time point; and sending, by the first terminal, a first signal at the first time point, wherein the first signal is a positioning reference signal, wherein the signal transmission method further comprises: acquiring, by the first terminal, configuration information of a resource pool; and determining, when the first time point selected by the first terminal within a first time range is not in the resource pool, a first available time point after the first time point and located within the resource pool as the first time point for sending the first signal. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: acquiring, by the first terminal, synchronization information at a second time point; wherein the determining, by the first terminal, the first time point comprises: determining, by the first terminal, the first time point within the first time range after the second time point. ### Claim 3 (depends on 1) The method according to claim 1, further comprising: acquiring, by the first terminal, first indication information; and determining the first time point according to the first indication information. ### Claim 4 (depends on 3) The method according to claim 3, wherein, the first indication information is used for indicating time index information; and wherein the determining the first time point according to the first indication information comprises: determining, by the first terminal, a time point corresponding to the time index information as the first time point. ### Claim 5 (depends on 3) The method according to claim 3, wherein, the first indication information is used for indicating time offset information, the time offset information being indicative of a time offset between the first time point and a second time point; and wherein the determining the first time point according to the first indication information comprises: determining, by the first terminal, the first time point based on the time offset information and the second time point. ### Claim 6 (depends on 3) The method according to claim 3, wherein the acquiring, by the first terminal, the first indication information comprises: acquiring, by the first terminal, the first indication information according to pre-configured information; or acquiring, by the first terminal, the first indication information according to network configuration information; or receiving, by the first terminal, the first indication information sent by a second terminal. ### Claim 7 (depends on 2) The method according to claim 2, wherein the determining, by the first terminal, the first time point within the first time range after the second time point comprises: selecting randomly, by the first terminal, a time point within the first time range as the first time point; or selecting, by the first terminal according to first identity information, a time point within the first time range as the first time point. ### Claim 8 (depends on 1) The method according to claim 1, wherein the determining, by the first terminal, the first time point comprises: determining the first time point according to the configuration information of the resource pool, wherein the first time point is a transmission time point in the resource pool. ### Claim 9 (depends on 1) The method according to claim 1, wherein the determining, by the first terminal, the first time point comprises: acquiring, by the first terminal, second indication information, the second indication information being used for determining a time domain position of a first reserved time point; and determining, by the first terminal, the first reserved time point as the first time point for sending the first signal; wherein the first reserved time point refers to a time point not used for transmitting sidelink data. ### Claim 10 (depends on 2) The method according to claim 2, further comprising: acquiring, by the first terminal, first information; and determining the first time range according to the first information. ### Claim 11 (depends on 10) The method according to claim 10, wherein the first information comprises at least one of: positioning accuracy information, timing error information, frequency deviation information, quality of service QoS information, or QoS class identifier QCI information. ### Claim 12 A terminal, comprising a processor, a memory and a transceiver, wherein the memory is configured to store a computer program; the processor, through calling and running the computer program stored in the memory, is configured to: determine a first time point; and send, via the transceiver, a first signal at the first time point, wherein the first signal is positioning reference signal, wherein the processor is further configured to: acquire configuration information of a resource pool; and determine, when the first time point selected within a first time range is not in the resource pool, a first available time point after the first time point and located within the resource pool as the first time point for sending the first signal. ### Claim 13 (depends on 12) The terminal according to claim 12, the processor is further configured to: acquire synchronization information at a second time point; and determine the first time point within the first time range after the second time point. ### Claim 14 (depends on 12) The terminal according to claim 12, the processor is further configured to: acquire first indication information; and determine the first time point according to the first indication information. ### Claim 15 (depends on 14) The terminal according to claim 14, wherein the first indication information is used for indicating time index information; and the processor is further configured to determine a time point corresponding to the time index information as the first time point. ### Claim 16 (depends on 14) The terminal according to claim 14, wherein, the first indication information is used for indicating time offset information, the time offset information being indicative of a time offset between the first time point and a second time point; and the processor is further configured to determine the first time point based on the time offset information and the second time point. ### Claim 17 (depends on 14) The terminal according to claim 14, wherein the processor is further configured to: acquire the first indication information according to pre-configured information; or acquire the first indication information according to network configuration information; or receive, via the transceiver, the first indication information sent by a second terminal. ### Claim 18 (depends on 13) The terminal according to claim 13, wherein the processor is further configured to: randomly select a time point within the first time range as the first time point; or select, according to first identity information, a time point within the first time range as the first time point. ### Claim 19 A non-transitory computer-readable storage medium, used for storing a computer program, wherein the computer program causes a computer to implement a signal transmission method comprising: determining a first time point; and sending first signal at the first time point, wherein the first signal is positioning reference signal, wherein the signal transmission method further comprises: acquiring, by the first terminal, configuration information of a resource pool; and determining, when the first time point selected by the first terminal within a first time range is not in the resource pool, a first available time point after the first time point and located within the resource pool as the first time point for sending the first signal.