アドホックネットワークにおける動的クラスタリングに基づく適応型経路制御<速報>

概要

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Ad-hoc networks do not need particluar network equipments such as routers or base stations, and they are autonomously constructed from end-user terminals (nodes). In ad-hoc networks, routing is one of the most important issues so that nodes communicate with target nodes, and various protocols have been proposed. One of the most promising is Clusterbased routing. The Advantages of using cluster are mainly alleviation of flooding and amount of routing information that nodes maintain. However, as situations and topologies of an ad-hoc network are various and dynamic, it is difficult for a single fixed protocol to perform well for all occasions. Therefore, some dynamic and adaptive mechanism in routing protocols is necessary. In this paper, we propose an adaptive routing system for ad-hoc networks. This system begins in the same manner as a reactive protocol, and when the network situation gets unsuitable for the protocol, the system changes its manner of routing with a cluster-head in Cluster-based Routing, which emerges autonomously at the place of “hot spots” in the network. Consequently, this protocol system constructs clusters in a dynamic and adaptive manner.