# US 11,908,322 B2 · System and method of managing wireless traffic signals > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,322 B2 - Document ID: US11908322B2 - Status: Granted - Kind: B2 - Application number: 17/407,059 - Filed: 2021-08-19 - Published: 2023-03-02 - Granted: 2024-02-20 - Earliest claimed: 2021-08-19 - Applicants: Ruishi Zhang - Inventors: Ruishi Zhang - Web page: https://patentgrep.com/patent/US11908322B2 ## CPC - G08G 1/092: {Coding or decoding of the information} - G08G 1/093: {Data selection, e.g. prioritizing information, managing message queues, selecting the information to be output} - G08G 1/095: Traffic lights - G08G 1/096: provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase - G08G 1/0965: responding to signals from another vehicle, e.g. emergency vehicle - G08G 1/096725: {where the received information generates an automatic action on the vehicle control} - G08G 1/096783: {where the origin of the information is a roadside individual element} - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W 4/44: for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H] - H04W 12/03: Protecting confidentiality, e.g. by encryption - 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) ## Abstract A system and a method manage wireless traffic signals in order to aid autonomous driving systems and humans to quickly and accurately detect traffic signal changes and surrounding traffic. The system includes a plurality of road vehicles. Each road vehicle includes a vehicle receiver, a vehicle controller, and a vehicle output device. The system also includes a plurality of traffic-signal sources and a plurality of signal emitters. Each signal emitter is associated to a corresponding traffic-signal source from the plurality of traffic-signal sources. Each signal emitter processes traffic signals from the corresponding traffic-signal source and sends the processed traffic signals to the vehicle receivers. The vehicle receivers receive signals from the plurality of signal emitters. The vehicle controller processes the signals received by the vehicle receiver. The vehicle output device executes instructions that are extracted from the signals processed by the vehicle controller. ## Claims ### Claim 1 A method of managing wireless traffic signals, the method comprises the steps of: (A) providing a plurality of road vehicles, wherein each road vehicle includes a vehicle receiver, a vehicle controller, and a vehicle output device; (B) providing a plurality of traffic-signal sources and a plurality of signal emitters, wherein each signal emitter is associated to a corresponding traffic-signal source from the plurality of traffic-signal sources; (C) periodically broadcasting an encrypted traffic instruction with each signal emitter, wherein the encrypted traffic instruction of each emitter relates to the corresponding traffic-signal source; (D) receiving the encrypted traffic instruction of at least one proximal signal emitter with the vehicle receiver of at least one arbitrary road vehicle, wherein the proximal signal emitter is from the plurality of signal emitters, and wherein the arbitrary road vehicle is any vehicle from the plurality of road vehicles; (E) decoding the encrypted traffic instruction of the proximal signal emitter into a readable traffic instruction with the vehicle controller of the arbitrary road vehicle; (F) extrapolating at least one safe vehicle action in accordance to the readable traffic instruction with the vehicle controller of arbitrary road vehicle; and (G) executing the safe vehicle action with the vehicle output device of the arbitrary road vehicle. ### Claim 2 (depends on 1) The method of managing wireless traffic signals as claimed in claim 1, the method comprises the steps of: providing each signal emitter with a timer, a broadcasting time period, and a source traffic instruction, wherein the source traffic instruction of each signal emitter relates to the corresponding traffic-signal source; initiating the timer with each signal emitter during step (C); generating a security token for the source traffic instruction with each signal emitter; and encoding the new security token and the new source traffic instruction into the encrypted traffic instruction of the specific signal emitter with the specific signal emitter, if the broadcasting time period is lapsed by the timer. ### Claim 3 (depends on 2) The method of managing wireless traffic signals as claimed in claim 2, the method comprises the steps of: generating the source traffic instruction of at least one specific signal emitter with the corresponding traffic-signal source, wherein the specific signal emitter is from the plurality of signal emitters; and relaying the source traffic instruction of the specific signal emitter from the corresponding traffic-signal source to the specific signal emitter before step (C). ### Claim 4 (depends on 2) The method of managing wireless traffic signals as claimed in claim 2, the method comprises the steps of: prompting to enter the source traffic instruction of at least one specific signal emitter with the specific signal emitter, wherein the specific signal emitter is from the plurality of signal emitters; and receiving the source traffic instruction of the specific signal emitter with the specific signal emitter before step (C), if the source traffic instruction of the specific signal emitter is entered with the specific signal emitter. ### Claim 5 (depends on 2) The method of managing wireless traffic signals as claimed in claim 2, the method comprises the steps of: receiving an instruction modification from the corresponding traffic-signal source with at least one specific signal emitter, wherein the specific signal emitter is from the plurality of signal emitters; generating a new source traffic instruction in accordance to the instruction modification with the specific signal emitter; generating a new security token for the new source traffic instruction with the specific signal emitter; and encoding the new security token and the new source traffic instruction into the encrypted traffic instruction of the specific signal emitter with the specific signal emitter. ### Claim 6 (depends on 1) The method of managing wireless traffic signals as claimed in claim 1, the method comprises the steps of: providing a plurality of emitter identifiers stored on the vehicle controller, wherein each signal emitter is associated with a corresponding emitter identifier from the plurality of emitter identifiers; decoding a security token and a source traffic instruction from the encrypted traffic instruction of the proximal signal emitter with the vehicle controller of the arbitrary road vehicle during step (E); comparing the security token to each emitter identifier with the vehicle controller of the arbitrary road vehicle in order to verify the security token with the corresponding emitter identifier of the proximal signal emitter; and designating the source traffic instruction as the readable traffic instruction with the vehicle controller of the arbitrary road vehicle. ### Claim 7 (depends on 6) The method of managing wireless traffic signals as claimed in claim 6, the method comprises the steps of: providing the security token with an instruction start time and an instruction end time; tracking a current time with the vehicle controller of the arbitrary road vehicle; initiating step (G), if the current time matches the instruction start time; and terminating step (G), if the current time matches the instruction end time. ### Claim 8 (depends on 1) The method of managing wireless traffic signals as claimed in claim 1, the method comprises the steps of: providing each road vehicle with a vehicle transmitter; broadcasting a current vehicle action with the vehicle transmitter of each road vehicle, wherein the current vehicle action of each vehicle transmitter relates to the corresponding road vehicle; receiving the current vehicle action of at least one proximal road vehicle with the vehicle receiver of the arbitrary road vehicle before step (F), wherein the proximal road vehicle is from the plurality of road vehicles; and further extrapolating the safe vehicle action in accordance to the current vehicle action of the proximal road vehicle with the vehicle controller of the arbitrary road vehicle during step (F). ### Claim 9 (depends on 1) The method of managing wireless traffic signals as claimed in claim 1, the method comprises the steps of: providing the arbitrary road vehicle as an autonomous road vehicle, wherein the vehicle output device of the autonomous road vehicle is an automated control system; and executing the safe vehicle action as at least one driving maneuver with the automated control system during step (G). ### Claim 10 (depends on 1) The method of managing wireless traffic signals as claimed in claim 1, the method comprises the steps of: providing the arbitrary road vehicle as a manual road vehicle, wherein the vehicle output device of the manual road vehicle is at least one speaker; and outputting the safe vehicle action as an audible instruction with the speaker during step (G).