Coding aware routing reduces transmissions number and improves network throughput by exploiting network coding opportunities of a route

and has become a hot topic of routing algorithm research in recent years.The network coding condition failure and node energy neglecting are two problems of current coding aware routing.Therefore

current coding aware routing cannot be applied directly in wireless sensor network.A cross layer coding aware energy efficient routing (CAER) is presented for wireless sensor network.The revised network coding condition is proposed and proved to avoid network coding condition failure.Based on the idea of cross layer

the network coding aware mechanism explores potential network coding opportunities through combing topology control mechanism and coverage control mechanism.Besides

a cross layer coding aware routing metric (CCRM) is presented

which jointly considers coding opportunity and energy of nodes.Simulation results demonstrate that

compared with current network coding aware routing

CAER improves the accuracy of coding aware mechanism

increases coding opportunities number by 5%~15% and prolongs network lifetime by 8%~12%.