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Energy Efficient Opportunistic Routing in Wireless Sensor Networks
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The 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 the packet, i.e., in forwarder list. In wireless networks, various factors, like fading, interference, and multi-path effects, can lead to temporary heavy packet losses in a pre-selected path 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. The main focus is on selecting and prioritizing forwarder list to minimize energy consumptions by all nodes. The study of both cases where the transmission power of each node is fixed or dynamically adjustable. I present an energy efficient opportunistic routing strategy, denoted as EEOR. Here extensive simulations in TOSSIM show that the new implemented 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, the average delivery delay
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