Nodes Self-Scheduling Approach for Maximising Wireless Sensor Network Lifetime
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 2, Issue 4
Abstract
Coverage and energy conservation are two major issues in wireless sensor networks (WSNs), especially when sensors are randomly deployed in large areas. In such WSNs, sensors are equipped with limited lifetime batteries and redundantly cover the target area. To face the short lifetime of the WSN, the objective is to optimize energy consumption while maintaining the full sensing coverage. A major technique to save the energy is to use a wake-up scheduling protocol through which some nodes stay active whereas the others enter sleep state so as to conserve their energy. This study presents an original algorithm for node Self scheduling to decide which ones have to switch to the sleep state. The novelty is to take into account the remaining energy at every node in the decision of turning off redundant nodes. Hence, the node with a low remaining energy has priority over its neighbors to enter sleep state. The decision is based on a local neighborhood knowledge that minimizes the algorithm overhead. To verify and evaluate the proposed algorithm, simulations have been conducted and have shown that it can contribute to extend the network lifetime. A comparison with existing works is also presented and the performance gains are highlighted.
Authors and Affiliations
Sivasankari Selvam
Keywords
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