# US 10,120,003 B2 · RSSI based V2X communication plausability check > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,120,003 B2 - Document ID: US10120003B2 - Status: Granted - Kind: B2 - Application number: 15/613,296 - Filed: 2017-06-05 - Published: 2017-12-21 - Granted: 2018-11-06 - Earliest claimed: 2016-06-19 - Assignees: Autotalks Ltd. - Applicants: Autotalks Ltd. - Inventors: Onn Haran; Ariel Feldman; Nir Raviv - Web page: https://patentgrep.com/patent/US10120003B2 ## CPC - G01R 21/1331: {Measuring real or reactive component, measuring apparent energy} - G01S 19/215: {issues related to spoofing} - G06F 11/00: Error detection; Error correction; Monitoring (error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00) - G08G 1/096716: {where the received information does not generate an automatic action on the vehicle control} - G08G 1/096741: {where the source of the transmitted information selects which information to transmit to each vehicle} - G08G 1/09675: {where a selection from the received information takes place in the vehicle} - G08G 1/096791: {where the origin of the information is another vehicle} - H04B 17/27: for locating or positioning the transmitter - H04B 17/318: Received signal strength - H04W 12/121: Wireless intrusion detection systems [WIDS]; Wireless intrusion prevention systems [WIPS] - G01S 11/06: using intensity measurements - H04W 4/46: for vehicle-to-vehicle communication [V2V] - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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}) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract System and methods for plausibility check in vehicle-to-everything dynamic environments in which a local vehicle communicates with remote vehicles. The system comprises means for obtaining a measured RSSI from a specific remote vehicle, and a modified plausibility check unit configurable and operable to apply a dynamic RSSI model to detect implausible positioning of the specific remote vehicle and/or of the local vehicle based on the measured RSSI of the specific remote vehicle and on a RSSI calculated for the specific remote vehicle. Decisions on respective further actions to be performed by the specific remote vehicle and by the local vehicle are made based on respective plausibility checks applied to both vehicles using the dynamic RSSI model. ## Claims ### Claim 1 A method for plausibility check in a vehicle-to-everything (V2X) dynamic environment in which a local vehicle communicates with remote vehicles, comprising: a) obtaining a measured Received Signal Strength Indicator (RSSI) from a specific remote vehicle; b) calculating an expected RSSI for the specific remote vehicle using a dynamic RSSI model; c) performing a respective plausibility check for each of the specific remote vehicle and the local vehicle using the specific remote vehicle measured RSSI and the calculated expected RSSI, and, based on results of the respective plausibility checks; d) deciding on respective further actions to be performed by the specific remote vehicle and by the local vehicle. ### Claim 2 (depends on 1) The method of claim 1, wherein the local vehicle has a frame with a plurality of sectors adjusted thereto, wherein a specific sector of the plurality of sectors is associated with the specific remote vehicle, and wherein (a)-(d) are performed per the specific sector. ### Claim 3 (depends on 1) The method of claim 1, wherein the calculating an expected RSSI for the specific remote vehicle using a dynamic RSSI model includes calculating using a RSSI model dynamically adjusted for each measured RSSI per distance of the specific remote vehicle from the local vehicle. ### Claim 4 (depends on 1) The method of claim 1, wherein the performing a plausibility check includes performing the check using convergence of the RSSI model and an input from a database of plausibilities of received remote vehicles. ### Claim 5 (depends on 1) The method of claim 1, wherein the deciding on respective further actions includes deciding to reduce the plausibility of the local vehicle if a result of the plausibility check indicates that the specific remote vehicle is implausible. ### Claim 6 (depends on 1) The method of claim 1, wherein the deciding on respective further actions includes deciding to stop transmission by the local vehicle if a result of the plausibility check indicates that the local vehicle is implausible. ### Claim 7 (depends on 1) The method of claim 1, wherein the deciding on respective further actions includes deciding to continue transmission by the local vehicle if a result of the plausibility check indicates that the local vehicle is plausible. ### Claim 8 (depends on 1) The method of claim 1, further comprising: if the plausibility check for the specific remote vehicle indicates that the specific remote vehicle is plausible, e) updating the dynamic RSSI model. ### Claim 9 (depends on 8) The method of claim 8, wherein the local vehicle has a frame with a plurality of sectors adjusted thereto, wherein a specific sector of the plurality of sectors is associated with the specific remote vehicle, and wherein (a)-(e) are performed per the specific sector. ### Claim 10 (depends on 8) The method of claim 8, wherein the calculating an expected RSSI for the specific remote vehicle using a dynamic RSSI model includes calculating using a RSSI model dynamically adjusted for each measured RSSI per distance of the specific remote vehicle from the local vehicle. ### Claim 11 (depends on 10) The method of claim 10, wherein the calculating using a RSSI model dynamically adjusted for each measured RSSI per distance includes calculating by applying a 2nd order model for propagation that considers both a linear change coefficient of attenuation relative to a logarithm of the distance and a change in the linear change coefficient of attenuation relative to the same logarithm of distance. ### Claim 12 A system for plausibility check in a vehicle-to-everything (V2X) dynamic environment in which a local vehicle communicates with remote vehicles, comprising: a) means for obtaining a measured Received Signal Strength Indicator (RSSI) from a specific remote vehicle; and b) a modified plausibility check unit configurable and operable to apply a dynamic RSSI model to detect implausible positioning of the specific remote vehicle and/or of the local vehicle based on the measured RSSI of the specific remote vehicle and on a RSSI calculated for the specific remote vehicle. ### Claim 13 (depends on 12) The system of claim 12, wherein the modified plausibility check unit comprises a RSSI misbehavior detection unit that includes a RSSI model estimation module for estimating and for updating the dynamic RSSI model. ### Claim 14 (depends on 12) The system of claim 12, wherein the modified plausibility check unit comprises a vehicle database management module for managing a database of vehicle plausibilities used in plausibility checks. ### Claim 15 (depends on 12) The system of claim 12, wherein the modified plausibility check unit comprises a misbehavior enforcement unit for responding to detected misbehavior by deciding on respective further actions to be performed by the specific remote vehicle and by the local vehicle. ### Claim 16 (depends on 13) The system of claim 13, wherein the modified plausibility check unit further comprises a vehicle database management module for managing a database of vehicle plausibilities used in plausibility checks. ### Claim 17 (depends on 13) The system of claim 13, wherein the modified plausibility check unit further comprises a misbehavior enforcement unit for responding to detected misbehavior by deciding on respective further actions to be performed by the specific remote vehicle and by the local vehicle. ### Claim 18 (depends on 14) The system of claim 14, wherein the modified plausibility check unit further comprises a misbehavior enforcement unit for responding to detected misbehavior by deciding on respective further actions to be performed by the specific remote vehicle and by the local vehicle. ### Claim 19 (depends on 12) The system of claim 12, wherein the local vehicle has a frame with a plurality of sectors adjusted thereto, wherein a specific sector of the plurality of sectors is associated with the specific remote vehicle, and wherein the a modified plausibility check unit is configurable and operable to apply the dynamic RSSI model for the specific sector. ### Claim 20 (depends on 13) The system of claim 13, wherein the local vehicle has a frame with a plurality of sectors adjusted thereto, wherein a specific sector of the plurality of sectors is associated with the specific remote vehicle, and wherein the a modified plausibility check unit is configurable and operable to apply the dynamic RSSI model for the specific sector.