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Method and apparatus for synchronization in vehicle network

  • US 8,581,689 B2
  • Filed: 11/22/2010
  • Issued: 11/12/2013
  • Est. Priority Date: 11/30/2009
  • Status: Expired due to Fees
First Claim
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1. A method for synchronization in a vehicle network formed between wireless communication devices of vehicles traveling on a road, the method comprising:

  • detecting a vehicle traveling on the road by a vehicle detection sensor installed at predetermined intervals; and

    when detecting the vehicle by the vehicle detection sensor, generating a beacon signal for synchronization by a synchronization device and transmitting the same to the wireless communication device of the vehicle,wherein the wireless communication device of the vehicle performs synchronization based on the beacon signal;

    wherein the beacon signal contains information indicating presence or absence of a forwarding message and an identification number of the corresponding message;

    if the information indicating the presence or absence of a forwarding message is contained in the beacon signal, the wireless communication device of the vehicle generating and transmitting a reception request message requesting transmission of the message;

    if the identification number of the message contained in of the beacon signal does not match an identification number of a previously received message, the wireless communication device of the vehicle transmits the reception request message.

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