# US 11,029,384 B2 · System and method for detecting fake information about vehicle location > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,384 B2 - Document ID: US11029384B2 - Status: Granted - Kind: B2 - Application number: 15/995,391 - Filed: 2018-06-01 - Published: 2019-06-20 - Granted: 2021-06-08 - Earliest claimed: 2017-12-14 - Assignees: Hyundai Motor Company; Kia Motors Corporation; Korea University Research and Business Foundation - Applicants: Hyundai Motor Company; Kia Motors Corporation; Korea University Research Business Foundation - Inventors: Jong Rok Park; Dong Gyu Noh; Su Lyun Sung; Dae Sung Hwang; Hahk Rel Noh; Cho Rong Ryu; Tae Jun Lee; Hyo Gon Kim; In Seon An; Yong Tae Park; Tae Ho Kim - Web page: https://patentgrep.com/patent/US11029384B2 ## CPC - G01S 3/043: {Receivers} - G01S 3/023: {Monitoring or calibrating} - G01S 3/46: using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems - G01S 5/0045: {Transmission from base station to mobile station (G01S5/009 takes precedence)} - G08G 1/00: Traffic control systems for road vehicles (arrangement of road signs or traffic signals E01F9/00 {; automatic vehicle control B62D}) - G08G 1/096783: {where the origin of the information is a roadside individual element} - G01S 19/14: specially adapted for specific applications - G01S 19/215: {issues related to spoofing} - G07C 5/008: {communicating information to a remotely located station (transmission systems for measured values G08C)} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - 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}) - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE ## Abstract A system for detecting fake information about a vehicle location may include a radio signal receiver configured to receive a radio signal from a communication system; a message receiver configured to receive the radio signal to generate a message and determine the message to generate information about a location of the communication system; a radio signal incident angle calculator configured to generate a radio signal incident angle; an azimuth calculator configured to generate a location information azimuth angle by use of the information about locations of the communication system and a receiving vehicle, and a fake vehicle generated by the communication system; and a location information fake detector configured to determine whether location information of the fake vehicle is faked by use of a difference value between an angle corresponding to a reference axis of the location information azimuth angle and the location information azimuth angle. ## Claims ### Claim 1 A system for detecting fake information related to a vehicle location, the system comprising: a radio signal receiver configured to receive a radio signal from a communication system; a message receiver configured to receive the radio signal from the radio signal receiver to generate a message, wherein the message receiver determines the generated message to generate information related to a location of the communication system; a radio signal incident angle calculator configured to receive the radio signal from the radio signal receiver to generate a radio signal incident angle; an azimuth calculator configured to generate a location information azimuth angle by use of the information related to the location of the communication system, information related to a location of a receiving vehicle, and information related to a location of a ghost vehicle generated by the communication system; and a location information fake detector configured to determine whether information related to the location of the ghost vehicle is faked by use of a difference value between an angle corresponding to a reference axis of the location information azimuth angle and the location information azimuth angle, wherein the azimuth calculator generates the location information azimuth angle between the receiving vehicle and the ghost vehicle based on to the reference axis determined by a traveling direction of the receiving vehicle by use of the information related to the location of the communication system, the information related to the location of the receiving vehicle, and the information related to the ghost vehicle, and wherein the reference axis of the location information azimuth angle is determined by the traveling direction of the receiving vehicle. ### Claim 2 (depends on 1) The system of claim 1, wherein the radio signal receiver receives the radio signal from the communication system by use of a multi-antenna. ### Claim 3 (depends on 1) The system of claim 1, wherein the radio signal receiver periodically converts an analog signal received from the communication system into a digital signal. ### Claim 4 (depends on 1) The system of claim 1, wherein the message receiver decodes the message by use of the radio signal and is configured to determine the generated message to generate the information related to the location of the communication system. ### Claim 5 (depends on 1) The system of claim 1, wherein the radio signal incident angle calculator receives the radio signal, extracts a start time of a radio signal set corresponding to a start of the message by use of the radio signal set of an antenna in the radio signal, extracts a signal set to determine an incident angle based on the radio signal set, and generates the radio signal incident angle based on the radio signal set of the antenna in the extracted signal set. ### Claim 6 (depends on 1) The system of claim 1, wherein the information related to the location of the receiving vehicle is periodically updated by use of an Audio, Video and Navigation (AVN) device or a Global Positioning System (GPS) device in a terminal. ### Claim 7 (depends on 1) The system of claim 1, wherein the location information fake detector generates the angle corresponding to the reference axis of the location information azimuth angle based on the radio signal incident angle, and generates the difference value between the angle corresponding to the reference axis of the location information azimuth angle and the location information azimuth angle to determine whether the information related to the location of the ghost vehicle is faked. ### Claim 8 (depends on 7) The system of claim 7, wherein the location information fake detector is configured to determine that the information related to the location of the ghost vehicle is faked when the difference value between the angle corresponding to the reference axis of the location information azimuth angle and the location information azimuth angle is greater than a set angle. ### Claim 9 (depends on 1) The system of claim 1, wherein the location information fake detector is configured to determine that the information related to the location of the ghost vehicle is not faked when the difference value between the angle corresponding to the reference axis of the location information azimuth angle and the location information azimuth angle is smaller than a set angle. ### Claim 10 A method of detecting fake information related to a vehicle location, the method comprising: receiving a radio signal from a communication system; generating a message by receiving the radio signal from a radio signal receiver; generating information related to a location of the communication system by determining the generated message; generating a radio signal incident angle by receiving the radio signal from the radio signal receiver; generating a location information azimuth angle by use of the information related to the location of the communication system, information related to a location of a receiving vehicle, and information related to a location of a ghost vehicle generated by the communication system; and determining whether the information related to the location of the ghost vehicle is faked by use of a difference value between an angle corresponding to a reference axis of the location information azimuth angle and the location information azimuth angle, wherein the generating of the location information azimuth angle includes: generating the location information azimuth angle between the receiving vehicle and the ghost vehicle based on the reference axis determined by a traveling direction of the receiving vehicle by use of the information related to the location of the communication system, the information related to the location of the receiving vehicle, and the information related to the ghost vehicle, wherein the reference axis of the location information azimuth angle is determined by the traveling direction of the receiving vehicle. ### Claim 11 (depends on 10) The method of claim 10, wherein the receiving of the radio signal includes: receiving the radio signal from the communication system by use of a multi-antenna. ### Claim 12 (depends on 10) The method of claim 10, wherein the receiving of the radio signal includes: periodically converting an analog signal received from the communication system into a digital signal. ### Claim 13 (depends on 10) The method of claim 10, wherein the generating of the information related to the location of the communication system includes: decoding the message by use of the radio signal; and generating the information related to the location of the communication system by determining the generated message. ### Claim 14 (depends on 10) The method of claim 10, wherein the generating of the radio signal incident angle includes: extracting a start time of a radio signal set corresponding to a start of the message by use of the radio signal set of antenna in the radio signal after receiving the radio signal; extracting a signal set to determine an incident angle based on the radio signal set; and generating the radio signal incident angle based on the radio signal set of antenna in the extracted signal set. ### Claim 15 (depends on 10) The method of claim 10, wherein the information related to the location of the receiving vehicle is periodically updated by use of an Audio, Video and Navigation (AVN) device or a Global Positioning System (GPS) device in a terminal in the generating of the location information azimuth angle. ### Claim 16 (depends on 10) The method of claim 10, wherein the determining of whether the information related to the location of the ghost vehicle is faked includes: generating the angle corresponding to the reference axis of the location information azimuth angle based on the radio signal incident angle; and generating the difference value between the angle corresponding to the reference axis of the location information azimuth angle and the location information azimuth angle to determine whether the information related to the location of the ghost vehicle is faked. ### Claim 17 (depends on 16) The method of claim 16, wherein the determining of whether the information related to the location of the ghost vehicle is faked includes: determining that the information related to the location of the ghost vehicle is faked when the difference value between the angle corresponding to the reference axis of the location information azimuth angle and the location information azimuth angle is greater than a set angle. ### Claim 18 (depends on 10) The method of claim 10, wherein the determining of whether the information related to the location of the ghost vehicle is faked includes: determining that information related to the location of the ghost vehicle is not faked when the difference value between the angle corresponding to the reference axis of the location information azimuth angle and the location information azimuth angle is smaller than a set angle.