Patent ID: 11972683
Assignee: YUNEX GMBH
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The tracking method as claimed in claim 5, wherein the following vehicle-specific, vehicle-characteristic message parameters are used in the “cooperative awareness message <CAM>”:
type of different vehicles belonging to the road users, for example bus, automobile, motorcycle, etc., in the group;
time stamp of vehicles belonging to the road users in the group should be close in terms of time;
position of different vehicles belonging to the road users in the group should be adjacent;
direction of vehicles belonging to the road users in the group should be the same;
speed of vehicles belonging to the road users in the group should be comparable;
length of different vehicles belonging to the road users is used as a group identifying feature;
width of different vehicles belonging to the road users is used as a group identifying feature;
issuing authority of the cryptographic certificates for the signature of the status messages;
certificate hierarchy for validating the certificate for the signature of the status messages;
repetition rate of the change of the parameters.