ABSTRACT In WSNs’ applications, not only the reliable end-to-end communications are must be ensured, but also the reduction of energy consumption and the entire network’s lifetim e should be optimized. All of the above have become to be an important way to evaluate the performance of routing protocols. In this paper, an op-timization model for WSNs’ lifetime is firstly advanced. Secondly, the shortage of ETX based routing metric is solved with the help of the optimization model. Thirdly, an energy balanced routing metric is advanced which is called EBRM in this paper. The result of simulation in NS-2 shows that, the EBRM metric can not only prolong the network’s lifetime, but also can ensure the reliable end-to-end communication.
Cite this paper
nullJ. ZHU, H. ZHAO and J. XU, "An Energy Balanced Reliable Routing Metric in WSNs," Wireless Sensor Network, Vol. 1 No. 1, 2009, pp. 22-26. doi: 10.4236/wsn.2009.11004.
 I. F. Akyildiz, W. Su, Y. Sankarasubramaniam, et al., “A survey on sensor networks,” [J]. IEEE Communications Magazine, 40(8), pp. 102-105, 2002.
 C. Suh, Y. B. Ko, D. M. Son, et al., “Energy efficient cross-layer MAC protocol for wireless sensor networks,” [A]. Proceedings of the APWeb 2006 International Workshops: XRA, IWSN, MEGA, and ICSE[C]., Harbin, Springer Verlag, pp. 410-419, 2006.
 H. L. Van, T. Nieberg, J. Wu, et al., “Prolonging the lifetime of wireless sensor networks by cross-layer interaction,” [J]. IEEE Wireless Communications, 11(6), pp. 78-86, 2004.
 I. Y. Kong and W. J. Hwang, “Lifetime maximization by cross-layer interaction in wireless sensor networks,” [A]. Proceedings of the 8th International Conference Advanced Communication Technology (ICACT 2006) [C]. Phoenix Park: Institute of Electrical and Electronics Engineers Computer Society, pp. 2055-2060, 2006.
 P. J. Wan, G. Calinescu, and X. Li, “Minimum-energy broadcast routing in static ad-hoc wireless networks,” [C]. Proceedings of INFOCOM’01, Anchorage, AK, pp. 1162-1171, 2001.
 C. K. Toh, “Maximum battery life routing to support ubiquitous mobile computing in wireless ad hoc networks,” [J]. IEEE Communications Magazine, pp. 138-147, 2001.
 M. Bhardwaj, T. Garnett, A. P. Chandrakasan, “Upper bounds on the lifetime of sensor networks,” [C]. Proceedings of ICC, Helsinki, Finland, pp. 785-790, 2001.
 S. Singh, M. Woo, and C. S. Raghavendra, “Power-aware routing in mobile ad hoc networks,” [C]. Proceedings of the 4th Annual ACM/IEEE International Conference on Mobile Computing and Networking, Dallas, United States, ACM Press, 1998.
 D. Couto, “High-throughput routing for multi-hop wireless networks,” [D]. Massachusetts, Massachusetts Institute of Technology, pp. 55-60, 2004.
 C. Perkins and E. Royer, “Ad hoc on-demand distance vector routing,” Proceedings of the 2nd IEEE Workshop on Mobile Computing Systems and Applications, 1999.