MLPA-Conservation Mechanism in Wireless Sensor Network Environments

Transmission using excess power not only shortens the lifetime of sensor nodes, but also introduces interference. Packets should ideally be transmitted with moderate power. This paper proposes a multi-level power adjustment (MLPA) mechanism for a wireless sensor network to prolong the lifetime of individual nodes and the overall network. In this paper, the authors constructed an analytical model of the MLPA mechanism with m distinct power levels (m-LPA). For m-LPA, the closed-form expression of the optimal power setting was determined and the mean transmission power was minimized to one-third of the original fixed transmission power. The authors found that the average power consumption of the authors' proposed mechanism is 33.93% higher than that of fixed-transmission power.

Provided by: EURASIP Topic: Networking Date Added: Nov 2012 Format: PDF

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