Author(s)

Yu Song¹, Xiaoli He², Ralf Volker Binsack³

¹Department of Network Information Management Center, Sichuan University of Science and Engineering, Zigong, China.
²School of Information Engineering, South West University of Science and Technology, Mianyang, China.
³Winterstein 14, Niddatal, Germany.

In this article, a routing protocol EARP (Energy Aware Routing Protocol) with the terminal node is proposed, to deal with the impact of the limited energy resources of Cognitive Radio Networks on the whole network routing. The protocol allows choosing the route from the neighbor nodes in different transmission paths, according to energy consumption of a single node and the full path. If the path breaks, the protocol will increase local routing maintenance strategy. It effectively reduces the retransmission caused by the situation, and improves the routing efficiency. It also can prevent the link transmission process selecting the fault route due to the energy depletion. Through simulation experiments compared with the LEACH (Low Energy Adaptive Clustering Hierarchy) routing protocol, the results showed that in the same experimental environment, the proposed EARP could obviously balance the load, protect low energy nodes, prolong the network survival time and reduce packet loss rate and packet delay of data delivery. So it can improve the energy consumption of sensing node and provide routing capabilities.

Energy Aware Routing Protocol, Route Strategy, Route Maintenance Strategy Network Lifetime, Packet Loss Rate, Relative Residual Energy

Song, Y. , He, X. and Binsack, R. (2017) Energy Aware Routing Protocol for Cognitive Radio Networks. Wireless Sensor Network, 9, 103-115. doi: 10.4236/wsn.2017.93006.