Vehicle on-board unit

Details Vehicle on-board unit Vehicle on-board unit

2005-10-11

2008-10-07

Tran, Dalena (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C455S450000

Reexamination Certificate

active

07433773

ABSTRACT:
A vehicle on-board unit comprises a short range wireless broadcasting section, a vehicle identifier receiving section, a vehicle identifier counting section and a communication congestion determining section. The short range wireless broadcasting section is configured to broadcast a host vehicle identifier of a host vehicle equipped with the vehicle on-board unit. The vehicle identifier receiving section is configured to receive neighboring vehicle identifiers relating to neighboring vehicles located within a prescribed communication region around the host vehicle. The vehicle identifier counting section is configured to determine a number of the neighboring vehicle identifiers received by the vehicle identifier receiving section within a prescribed period of time. The communication congestion determining section is configured to determine a congestion condition of short range wireless communications within the prescribed communication region based on the number of the neighboring vehicle identifiers determined in the vehicle identifier counting section.

REFERENCES:
patent: 6115613 (2000-09-01), Jonsson
patent: 6397145 (2002-05-01), Millington
patent: 6526282 (2003-02-01), Kadoshima et al.
patent: 6721632 (2004-04-01), Fallenstein
patent: 6801777 (2004-10-01), Rusch
patent: 7006831 (2006-02-01), Matz et al.
patent: 2004/0072574 (2004-04-01), Matz et al.
Vehicle Safety Communications Project, Task 12 Final Task Report; Oct. 2004; National Highway Traffic Safety Administration, U.S. Department of Transportation, Washington, D.C., U.S.A.
Vehicle Safety Communications Project, Task 3 Final Report; Mar. 2005; National Highway Traffic Safety Administration, U.S. Department of Transportation, Washington, D.C., U.S.A.

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