Abstract: A network coding based energy-aware routing protocol (ERPNC) was presented to minimize the effect of limited energy supply of end-nodes in Ad Hoc network.ERPNC uses coding opportunities of nodes to reduce the energy consumption by matching rates of date flows,and predicts remaining lifetime of nodes by using residual energy and ener-gy consumption speed of nodes.ERPNC presents a new routing evaluation function and a new routing discovery strate-gy by combining the total energy consumption of the path and the remaining lifetime of nodes.Moreover,a local routing maintaining strategy was introduced to decrease the occurrence of route interruption and packet retransmission.Simulation results show that,comparing to other routing protocols,ERPNC performs more effectively on decreasing transmitting energy consumption,balancing network energy consumption,prolonging network lifetime and improving network throughput.

Key words: Network coding,Energy-aware,Remaining lifetime,Routing maintaining strategy