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A Cluster Maintenance Scheme to Reduce the Control Overhead in Mobile Ad hoc Networks  

왕기철 (전북대학교 컴퓨터통계정보학과)
방상원 (송원대학 컴퓨터정보)
조기환 (전북대학교 전자정보공학부)
Abstract
The cluster structure reduces the number of retransmission messages, when a broadcast to all hosts in ad hoc network is needed. A cluster maintenance scheme is employed to preserve this advantage from time to time. However, most of the cluster maintenance schemes require additional control messages for cluster reformation as well as control messages for acquiring neighbor information. This mitigates the advantages of employing cluster structure in ad hoc network. In this paper, a cluster maintenance scheme which forces only clusterheads to broadcast control messages during hello time is proposed. When the cluster reformation is needed, the proposed scheme employs a strategy to reduce the control messages to a minimum. In these processes, the proposed scheme doesn't violate the definition of 2-cluster and produces the clusters in fully distributed method. The simulation results prove that our scheme is better than LCC(1).
Keywords
Ad hoc network; cluster structure; control message overhead; cluster maintenance;
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