Maximise lifetime of wireless sensor networks via a distributed cooperative routing algorithm
Chao Zhai, Ju Liu, Lina Zheng, Hongji Xu, He Henry Chen · Transactions on Emerging Telecommunications Technologies · 2012
ABSTRACT Combining cooperative diversity, truncated automatic repeat request scheme and distributed energy‐aware routing strategy, a novel cooperative routing algorithm adopting decode‐and‐forward fashion is proposed to maximise the lifetime of wireless sensor networks from the cross‐layer design perspective. In this algorithm, the transmission power is optimally allocated while satisfying the per‐link symbol error rate or the end‐to‐end throughput requirement. The average total consumed power weighted by the normalised remaining energy of every participating node is used as the link cost to avoid the overuse of certain nodes with extremely little energy. With the use of the traditional distributed shortest path algorithm, the best route that includes a cascade of single‐relay building blocks is constructed with polynomial complexity. In contrast to the non‐cooperative routing schemes, this cooperative routing algorithm can significantly prolong the network lifetime and improve the energy efficiency by reducing the total network residual energy. Copyright © 2012 John Wiley & Sons, Ltd.