Dynamic mobile network is a kind of moving network which has multiple independent wireless personal area networks interconnecting with MANET networking. Since a mobile device like a cellular phone can work as a mobile router for a dynamic mobile network, there are some fault problems related with traffic overload, reliability and energy consumption. And the essential issue of highly dynamic mobile network is fault tolerant mechanism. In this paper, we propose fast path redirection mechanism and candidate GMR election mechanism in order to enhance fault tolerance. As a result, our approaches support more reliable and seamless connectivity to all the nodes in mobile networks. Finally simulation results show the performance and efficiency of the mechanisms in terms of energy consumption and packet loss.
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