Issue No. 11 - November (2011 vol. 22)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TPDS.2011.70
Xufei Mao , Tsinghua University, Beijing
Shaojie Tang , Illinois Institute of Technology, Chicago
Xiaohua Xu , Illinois Institute of Technology, Chicago
Xiang-Yang Li , Tsinghua University, Beijing
Huadong Ma , Beijing University of Posts and Telecommunications, Beijing
Opportunistic routing ,  has been shown to improve the network throughput, by allowing nodes that overhear the transmission and closer to the destination to participate in forwarding packets, i.e., in forwarder list. The nodes in forwarder list are prioritized and the lower priority forwarder will discard the packet if the packet has been forwarded by a higher priority forwarder. One challenging problem is to select and prioritize forwarder list such that a certain network performance is optimized. In this paper, we focus on selecting and prioritizing forwarder list to minimize energy consumption by all nodes. We study both cases where the transmission power of each node is fixed or dynamically adjustable. We present an energy-efficient opportunistic routing strategy, denoted as EEOR. Our extensive simulations in TOSSIM show that our protocol EEOR performs better than the well-known ExOR protocol (when adapted in sensor networks) in terms of the energy consumption, the packet loss ratio, and the average delivery delay.
Sensor networks, opportunistic routing, energy.
X. Li, X. Xu, H. Ma, S. Tang and X. Mao, "Energy-Efficient Opportunistic Routing in Wireless Sensor Networks," in IEEE Transactions on Parallel & Distributed Systems, vol. 22, no. , pp. 1934-1942, 2011.