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Energy efficiency has been an important concern in wireless sensor networks where Medium Access Control (MAC) protocol plays an important role. MAC protocols proposed for Wireless Sensor Networks assume static sensor nodes but nodes know their locations, and they sleep-wake cycle, waking up periodically but not synchronously, which usually causes up gradation in network performance in scenarios involving mobile sensors. When a node has a packet to forward to the sink, there is a trade-off between how long this node waits for a suitable neighbor to wake up and the progress the packet makes towards the sink once it is forwarded to this neighbor.
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