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Redundant message packet suppression for in-vehicle ad hoc network

  • US 20090323579A1
  • Filed: 06/27/2008
  • Published: 12/31/2009
  • Est. Priority Date: 06/27/2008
  • Status: Active Grant
First Claim
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1. A method for suppressing redundant packet message transmissions in a vehicle having a multi-hop message delivery system, the vehicle having a receiver for receiving message packets from any one of a plurality of vehicles within a broadcast range of the vehicle, a transmitter for re-broadcasting the message packets to the plurality of nearby vehicles, the vehicle including a buffer for holding the received message packets prior to re-broadcasting the message packets, the method comprising the steps of:

  • calculating a first estimation value as a function of a signal strength of the vehicle receiver for a respective received message packet;

    calculating a second estimation value as a function of the buffer;

    determining a re-broadcast estimation threshold value as a function of the first estimation value and the second estimation value;

    providing at least one triggering function for generating an at least one triggering indicator; and

    re-broadcasting the respective message packet in response to the re-broadcast estimation threshold value satisfying the at least one triggering indicator.

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