Research of Opportunistic Routing Protocol in Wearable Sensor Network

Because the unstable wireless transmitting channel in wearable system, this article researched the broadcast characteristics of information channel in wearable wireless sensor network, and proposed a opportunistic routing protocol based on random linear network coding. This protocol used the distance unstable chain which can not be used by traditional route protocol. It requires each node except for destination in network to transmit the random linear combination created by all packets in buffer, and confirms the expected number of transmissions according to node’s credit value which is computed by a heuristic algorithm. The experiment results show that the proposed protocol presents significant performance improvements, especially in network throughput and end-to-end delay.