Infrastructure to vehicle communication protocol
AssigneeFLIR Commercial Systems, Inc.
InventorsDaniel Benhammou, Tyler Birgen
Life of this patent
Estimating the term…
Abstract
A system and method for securing and verifying transmitted traffic data. A transmitter may send a transmission via a radio signal including traffic data through or from hardware installed in a traffic control cabinet adjacent an intersection or other roadway feature of interest. The transmission may be signed with a private key. A receiver associated with a vehicle may receive, in addition to the transmission, a public key (e.g., via a data network) for use in verification of the authenticity of the transmission.
Claims19
A method of filtering and authenticating received messages comprising:
- storing a public key on a memory module disposed within a vehicle and in operative communication with a processor;
- receiving a message via an antenna associated with the vehicle and in operative communication with the processor, wherein the message comprises traffic data signed using a private key corresponding to the stored public key, and wherein the traffic data originates from a traffic hardware device disposed adjacent to a roadway and comprises signal phase and timing information associated with a signal controller at an intersection along the roadway;
- using the stored public key to verify authenticity of the message;
- identifying the traffic hardware device based, at least in part, on the received message;
- determining that the traffic hardware device is associated with a traffic signal relevant to a route of the vehicle;
- transmitting an instruction signal from an output port in operative communication with the processor in response to determining the Message is authentic and relevant;
- accessing a database comprising a plurality of traffic hardware devices, each traffic hardware device having a unique public key associated therewith;
- and
- downloading a plurality of unique public keys associated with traffic hardware devices that are relevant to the route of the vehicle.
A device for authenticating messages received by a vehicle, the device comprising:
- an antenna configured to receive the messages from a transmitter associated with a traffic control cabinet and a traffic hardware device associated with the traffic control cabinet, each message comprising traffic data signed using a private key corresponding to a public key, wherein the traffic data originates from the traffic hardware device disposed adjacent to a roadway and comprises signal phase and timing information associated with a signal controller at an intersection along the roadway;
- a first memory module configured to store a public key associated with the traffic hardware device;
- and
- a first processor in operative communication with the antenna and the first memory module and configured to:
- authenticate the traffic data utilizing the stored public key to verify authenticity of each message;
- identify a geographic location of the traffic hardware device based, at least in part, on the public key, and identify the traffic hardware device based, at least in part, on the received message;
- determine that the traffic hardware device is associated with a traffic signal relevant to a route of the vehicle;
- transmit an instruction signal from an output port in operative communication with the first processor in response to determining the message is authentic and relevant;
- wherein the first processor is also configured to access a database comprising a plurality of traffic hardware devices, each traffic hardware device having a unique public key associated therewith;
- and download a plurality of unique public keys associated with traffic hardware devices that are relevant to the route of the vehicle.
Dependencies are inferred from the claim text.