A Network Coding Based Broadcasting Protocol in Heterogeneous Wireless Sensor Networks
Miao Jingwen · Chuangan jishu xuebao · 2012
This paper proposes a network coding based energy-aware broadcasting protocol(ENCBP) in heterogeneous wireless sensor networks.Each sensor node computes the liner mapping value of the residual energy in accordance with residual energy list with respect to neighboring nodes.On this basis,we present an energy-aware forwarding mechanism based on network coding.In this way,a sensor node with higher residual energy is assigned a higher priority for data forwarding than that with lower residual energy is.The purpose is to achieve energy-balanced data transmission.In addition,a pseudo broadcast mechanism is introduced for the optimization of packet delivery ratio.The simulation results demonstrate that ENCBP not only improves energy balance thus extending the network life cycle,but also decrease the packet delay to some extent so as to improve data communication performance.