Autonomous fault tolerance technology of emergency community in wireless sensor network

Wireless Sensor Network is widely used in Emergency Management System to assure safety. If emergency appears, real-timely emergency information´s transmission should be assured. However, if fault appears, emergency information´s transmission is stopped until available route is constructed. Conventional approaches make efforts to improve fault tolerance such as retransmission based and replication based approaches. However, they could not apply to emergency situation as long interval. Thus, autonomous fault tolerance technology is proposed. Each community member will cooperate with each other to locally reconstruct community to continue transmitting. The evaluation results indicate improvement of fault tolerance performance.