Power Saving Strategies in Wireless Sensor Networks

POWER SAVING STRATEGIES IN WIRELESS SENSOR NETWORKS Pranali D. Tembhurne (Nandeshwar)1 and R.K. Krishna2 1Department of Computer Science and Engg., NIT, Katol Road, Mahurzari, Nagpur. E-mail: [email protected] 2Department of Electronics and Tele-communication, RCERT, Chandrapur. E-mail: [email protected] IEEE 802.16e is an emerging standard for mobile wireless broadband access systems. In any mobile networks, power saving is one of the most important features for the extension of devices’ lifetime. IEEE 802.16e is the latest broadband wireless access standard designed to support mobility. To enhance the power efficiency of broadband wireless sensor networks based on battery power, power saving strategies based on cross-layer design is proposed for IEEE 802.16e sleep-mode operation. By analyzing the behaviors of a mobile station working in the sleep-mode operation with a Markov chain model and exploring the relationship among traffic, energy consumption and mean delay of power saving mechanism based on cross-layer design, a heuristic algorithm is proposed to adapt the parameters of sleep-mode mechanism to the mobile station traffic and the mean delay requirement.