METHODS FOR EFFICIENT ORGANIZATION OF VEHICLE PEER GROUPS AND EFFICIENT V2R COMMUNICATIONS

摘要

PROBLEM TO BE SOLVED: To provide methods for efficient control message distribution in a VANET.

SOLUTION: Efficient flooding mechanisms are provided to fulfill the objective of flooding with a limited number of re-broadcasting by selected key nodes. A suppression-based efficient flooding mechanism utilizes a Light Suppression technique to reduce the number of flooding relays by giving up the broadcasting of a flooding message when a node observes downstream relay of the same flooding message. Additionally, a relay-node based efficient flooding mechanism selects Relay Nodes to form an efficient flooding tree for control message delivery. RNs are nodes that relay at least one control message, for instance a Membership Report, to the upstream node in "k" previous control message cycles.

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