# US 10,769,956 B2 · Method and system for finding a parked vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,769,956 B2 - Document ID: US10769956B2 - Status: Granted - Kind: B2 - Application number: 16/255,015 - Filed: 2019-01-23 - Published: 2020-07-23 - Granted: 2020-09-08 - Earliest claimed: 2019-01-23 - Assignees: Nanning Fugui Precision Industrial Co., Ltd. - Applicants: Nanning Fugui Precision Industrial Co., Ltd. - Inventors: Hon-Da Wang - Web page: https://patentgrep.com/patent/US10769956B2 ## CPC - G08G 1/205: {Indicating the location of the monitored vehicles as destination, e.g. accidents, stolen, rental} - G08G 1/005: including pedestrian guidance indicator - H04W 4/024: Guidance services - H04W 4/46: for vehicle-to-vehicle communication [V2V] - Y02D 30/70: in wireless communication networks - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A method for finding a parked vehicle is disclosed. A moving vehicle executing the method broadcasts packets with an identifier of the vehicle and a time stamp. Other neighboring vehicles surrounding the moving vehicle records content of the packets. The moving vehicle is then parked. A key of the parked vehicle is operable to issue a search request with the identifier to the neighboring vehicles. The neighboring vehicles allocate time frames for relaying the search request with respect to the time stamp. Upon receiving the search request, the parked vehicle replies with a search response along the neighboring vehicles to the key set. ## Claims ### Claim 1 A method for finding a parked vehicle and executable by an electronic device, and installable in a vehicle, the method comprising: broadcasting a vehicle to vehicle communication packet from a target vehicle, wherein the vehicle to vehicle communication packet includes a time stamp, an identifier and light direction information of the target vehicle; obtaining sensor parameters from the target vehicle in response to an ignition key removing event associated with an ignition key, wherein the sensor parameters includes a first height parameter indicating a level on which the vehicle is parked; storing the obtained sensor parameters in a key set associated with the ignition key of the target vehicle; upon revisiting the vehicle, receiving a triggering signal, generated by the key set, to activate delivery of a search request for the target vehicle; obtaining a second height parameter by the key set in response to the triggering signal; determining whether the second height parameter matches a height position represented by the first height parameter among the sensor parameters; and multicasting, by the key set, a search request for the target vehicle from the key set when the second height parameter matches the height position. ### Claim 2 (depends on 1) The method of claim 1, wherein the height position is a number of a level where the target vehicle is parked. ### Claim 3 (depends on 1) The method of claim 1, the method further comprising: receiving by the key set a search response. ### Claim 4 (depends on 1) The method of claim 1, wherein the light direction information comprises component specific identifiers of a right head light, a left head light, a right tail light, and a left tail light of the target vehicle, the method further comprises: transmitting the component specific identifiers through visible light communication from the right head light, the left head light, the right tail light, and the left tail light. ### Claim 5 A method for finding a parked vehicle and executable by an electronic device, and installable in a vehicle, the method comprising: receiving, by a neighboring vehicle, a vehicle to vehicle communication packet from a target vehicle, wherein the vehicle to vehicle communication packet includes a time stamp, an identifier and light direction information of the target vehicle; storing, by the neighboring vehicle, the time stamp, the identifier, and the light direction information of the target vehicle; and receiving, by the neighboring vehicle, a search request for the target vehicle from a source of the search request; relaying, by the neighboring vehicle, the search request based on the time stamp and the light direction information of the target vehicle; receiving a search response responding to the search request; labeling a guiding vehicle receiving the search response in response to the search response; and relaying the search response to the source of the search request. ### Claim 6 (depends on 5) The method of claim 5, the method further comprising: determining a time frame based on a length of time counted up from reception of the vehicle to vehicle communication packet, wherein the relaying of the search request is executed in the time frame. ### Claim 7 (depends on 6) The method of claim 6, wherein a time span of the time frame increases exponentially as the length of time counted up from reception of the vehicle to vehicle communication packet increases. ### Claim 8 (depends on 6) The method of claim 6, wherein the length of time counted up from a time value is represented by the time stamp. ### Claim 9 (depends on 6) The method of claim 6, wherein the time frame is divided into a plurality of sub time frames arranged from a highest priority sub time frame to a lowest priority sub time frame, the method further comprising: identifying a vehicle closest to the target vehicle as an edge vehicle based on the light direction information of the target vehicle; allocating the highest priority sub time frame to the edge vehicle, wherein the relaying of the search request is executed by the edge vehicle in the highest priority sub time frame. ### Claim 10 (depends on 5) The method of claim 5, the light direction information comprises component specific identifiers of a right head light, a left head light, a right tail light, and a left tail light of the target vehicle. ### Claim 11 (depends on 10) The method of claim 10, wherein the component specific identifiers are transmitted through visible light communication. ### Claim 12 A system for finding a parked vehicle and executable by an electronic device, and installable in a vehicle, the system comprising: a search and report module executing instructions for: receiving, by a neighboring vehicle, a vehicle to vehicle communication packet from a target vehicle, wherein the vehicle to vehicle communication packet includes a time stamp, an identifier and light direction information of the target vehicle; storing, by the neighboring vehicle, the time stamp, the identifier and the light direction information of the target vehicle; and receiving, by the neighboring vehicle, a search request for the target vehicle from a source of the search request; relaying, by the neighboring vehicle, the search request based on the time stamp and the light direction information of the target vehicle; receiving a search response responding to the search request; labeling a guiding vehicle receiving the search response in response to the search response; and relaying the search response to the source of the search request. ### Claim 13 (depends on 12) The system of claim 12, wherein the search and report module further executes instructions for: determining a time frame based on a length of time counted up from reception of the vehicle to vehicle communication packet, wherein the relaying of the search request is executed in the time frame. ### Claim 14 (depends on 13) The system of claim 13, wherein the time span of the time frame increases exponentially as a length of time counted up from reception of the vehicle to vehicle communication packet increases. ### Claim 15 (depends on 13) The system of claim 13, wherein the length of time counted up from a time value is represented by the time stamp. ### Claim 16 (depends on 13) The system of claim 13, wherein the time frame is divided into a plurality of sub time frames arranged from a highest priority sub time frame to a lowest priority sub time frame, the search and report module further executes instructions for: identifying a vehicle most close to the target vehicle as an edge vehicle based on the light direction information of the target vehicle; allocating the highest priority sub time frame to the edge vehicle, wherein the relaying of the search request is executed by the edge vehicle in the highest priority sub time frame. ### Claim 17 (depends on 12) The system of claim 12, the light direction information comprises component specific identifiers of a right head light, a left head light, a right tail light, and a left tail light of the target vehicle. ### Claim 18 (depends on 17) The system of claim 17, wherein the component specific identifiers are transmitted through visible light communication.