METHOD AND DEVICES FOR IDENTIFYING A VEHICLE USING A LOCATION
First Claim
1. A method for identifying a vehicle using a predetermined location, comprising:
- carrying, on the vehicle, an onboard unit that via radio repeatedly broadcasts status messages, which each indicate a current relative distance of the onboard unit from the predetermined location and a radio identifier that changes after each or several status messages;
receiving at least one status message in a radio beacon;
detecting a location usage of the vehicle by evaluating the at least one status message based on the relative distance indicated therein;
transmitting an identification request from the radio beacon to the onboard unit which is addressed by way of the radio identifier from the at least one status message; and
receiving and conducting a legitimacy check of the identification request in the onboard unit and, if the request is legitimate, transmitting an identification of the onboard unit to the radio beacon, the identification remaining the same over several changes of radio identifier.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods for identifying a vehicle using a predetermined location, and a radio beacon and an onboard unit are provided. One method comprises: carrying, on the vehicle, an onboard unit that broadcasts status messages that each indicate a current relative distance of the onboard unit from the predetermined location and a radio identifier that changes after each or several status messages; receiving at least one status message in a radio beacon; detecting a location usage of the vehicle by evaluating the status message(s) based on the indicated relative distance; transmitting an identification request from the radio beacon to the onboard unit addressed according to the radio identifier from the status message(s); receiving and conducting a legitimacy check of the identification request in the onboard unit; and if the request is legitimate, transmitting an identification of the onboard unit to the radio beacon that remains the same over changes of radio identifier.
-
Citations
15 Claims
-
1. A method for identifying a vehicle using a predetermined location, comprising:
-
carrying, on the vehicle, an onboard unit that via radio repeatedly broadcasts status messages, which each indicate a current relative distance of the onboard unit from the predetermined location and a radio identifier that changes after each or several status messages; receiving at least one status message in a radio beacon; detecting a location usage of the vehicle by evaluating the at least one status message based on the relative distance indicated therein; transmitting an identification request from the radio beacon to the onboard unit which is addressed by way of the radio identifier from the at least one status message; and receiving and conducting a legitimacy check of the identification request in the onboard unit and, if the request is legitimate, transmitting an identification of the onboard unit to the radio beacon, the identification remaining the same over several changes of radio identifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A radio beacon for identifying a vehicle using a predetermined location, the vehicle carrying an onboard unit that via radio repeatedly broadcasts status messages that each indicate a current relative distance of the onboard unit from the predetermined location and a radio identifier that changes after each or several status messages, the radio beacon configured to, with the aid of a processor and a transceiver connected thereto,
receive at least one status message; -
detect a location usage by evaluating the at least one status message based on the relative distance indicated therein; transmit an identification request to that onboard unit which is addressed by way of the radio identifier from the at least one status message; and receive an identification of the onboard unit that remains the same over several radio identifier changes.
-
-
15. An onboard unit, comprising a processor, a satellite navigation receiver for position determination, and a transceiver for radio communication, wherein the onboard unit is configured to, with the aid of the transceiver, repeatedly broadcast via radio status messages, which each contain a radio identifier of the onboard unit that changes after several status changes, wherein the onboard unit is further configured to
indicate in each status message a current relative distance from a predetermined location, as determined by way of the satellite navigation receiver, the onboard unit further configured to receive, from a radio beacon, an identification request that is addressed to the current radio identifier of the unit and contains a cryptographic sender certificate; -
validate the sender certificate; and if the sender certificate is valid, transmit an identification of the onboard unit to the radio beacon, the identification remaining the same over several changes of radio identifier.
-
Specification