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Multicasting system and method for vehicular communication network

  • US 8,797,938 B2
  • Filed: 06/12/2012
  • Issued: 08/05/2014
  • Est. Priority Date: 06/13/2011
  • Status: Active Grant
First Claim
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1. A roadside communication devices comprising:

  • a communication unit configured to communicate with a plurality of vehicular communication devices and at least one neighboring roadside communication device;

    a beacon analysis unit configured to analyze beacon frames from the roadside communication device and the at least one neighboring roadside communication device when a slot allocation request is received from one of the vehicular communication devices;

    a determination unit configured to search for a period in which a slot has not been allocated by the roadside communication device and the at least one neighboring roadside communication device and determine whether a period for allocation of a slot to the vehicular communication device is present; and

    a slot allocation unit configured to allocate a slot period for multicasting by the vehicular communication device based on results of the determination of the determination unit;

    wherein the slot allocation unit, when the vehicular communication device enters a data communication area of the roadside communication device after a slot period has been allocated by the at least one neighboring roadside communication device, allocates information about the entry of the vehicular communication device to a period which belongs to a slot period of the beacon frame of the roadside communication device and which corresponds to the slot period allocated by the at least one neighboring roadside communication device.

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