关键词: 移动自组网 自私节点 信誉

Abstract:

After an introduction and thorough analysis of the Authenticated Routing for Ad hoe Networks （ARAN）, we find that an authenticated node could disturb networks by dropping packets or not participating in this routing protocol. In order to deal with this kind of vulnerability we propose an improvement  on the ARAN using global reputation mechanism （RARAN）. The improved protocol computes and stores the global reputation values of the nodes , and usess it as the basis of routing choice. Through this kind of method, it enables the protocol to stimulate the nodes to cooperate with eaeh other. Our simulation results showed that RARAN achieves more securities and a higher throughput compared with ARAN in the presence of selfish nodes.

Key words: mobile ad hoe network, selfish node, reputation