Opportunistic routing in multi-power wireless sensor networks

In this paper, we investigate on the opportunistic routing in Multi-Power Wireless Sensor Networks (MP WSNs). We first propose a routing metric called METT of opportunistic routing in MP WSNs, and model the power selecting process as a Markov decision process for computing the METT metric. We describe the METT-based opportunistic routing problem, and design a polynomial time optimal algorithm for getting the optimal routing and power selection scheme. Theory analysis and experiments show that the proposed multi-power opportunistic routing can improve the data transmission efficiency, significantly reduce the energy consumption and the end-to-end transmission delay. © 2013 Springer-Verlag.