Redundant message packet suppression for in-vehicle ad hoc...

Details Redundant message packet suppression for in-vehicle ad hoc... Redundant message packet suppression for in-vehicle ad hoc...

2008-06-27

2011-11-01

Pezzlo, John (Department: 2465)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C370S329000, C370S386000, C370S412000

Reexamination Certificate

active

08050188

ABSTRACT:
A method is provided for suppressing redundant packet message transmissions a multi-hop message delivery system. The vehicle receives message packets from any one of a plurality of vehicles within a broadcast range of the vehicle. The vehicle includes a buffer for holding the received message packets prior to re-broadcasting the message packets. A first estimation value is calculated as a function of a signal strength of the vehicle receiver for a respective received message packet. A second estimation value is calculated as a function of the buffer. A re-broadcast estimation threshold value is determined as a function of the first estimation value and the second estimation value. At least one triggering function is provided for generating an at least one triggering indicator. The respective message packet is re-broadcast in response to the re-broadcast estimation threshold value satisfying the at least one triggering indicator.

REFERENCES:
patent: 7715396 (2010-05-01), Castro et al.
patent: 2005/0180399 (2005-08-01), Park et al.
patent: 2008/0085702 (2008-04-01), Park et al.
patent: WO2006016540 (2006-02-01), None
Ozan K. Tonguz, et al., On the Broadcast Storm problem in Ad hoc Wireless Networks, 2006.

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