Abstract: The reliability maintannace of the wireless sensor network is a key point to keep the alarm messages delivered reliably to the monitor center on time in a event detection application. Based on the unreliable links in the wireless sensor network and the network charateristics of an event detection application, MPRRM, a multiple path redundant reliability maintanace algoritm was proposed in this paper. Both analytical and simulation results show that the MPRRM algorithm is superior to the previous published solutions in the metrics of reliability, false positive rate, latency and message overhead.

Key words: Wireless sensor networks,Reliability,Failure detection