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Several medium access control protocols have been proposed in the recent past for the vehicles for accessing radio channels and for distributing timely active safety messages for inter-vehicle communication in Vehicular Ad-hoc NETworks (VANETs). As contention period is high in Medium Access Control (MAC) for channel access, MAC in unable to distribute timely safety messages. To reduce the contention period, Region based Clustering Mechanism (RCM) is applied in MAC protocols. In this RCM, data is forwarded to vehicles using a multi-hop networks. This resolves the competition among vehicles to get radio channels for inter-vehicle communication. This also involves the effective, efficient and traceable communication during high mobility of vehicles.
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