An Expect Energy Efficient Algorithm for Wireless Sensor Networks

Wireless sensor networks (WSNs) consists of unattended sensors with limited storage, energy (battery power) and computation and communication capabilities. So, energy-efficient mechanism for wireless communication on each sensor node is so crucial for wireless sensor networks. This paper firstly makes a summary to power control and the existing routing metrics then finds the several key characteristics of wireless sensor networks communication link, show that the wireless links in real sensor networks can be extremely unreliable secondly the EEA (Expect Efficient Algorithm) is provided which based on power control. Finally, EEA in the paper is adapted to directed diffusion routing protocol, and evaluated the performance of EEA by comparing with existing routing protocols. Simulation results show that a significant reduction in network energy consumption and prolongs the network life span. Therefore, our research can give a significant guidance on the optimization of wireless sensor networks.