Abstract：Node scheduling scheme is an effective approach to solve problems of energy constraints and high coverage redundancy in Wireless Sensor Network (WSN). However, it should satisfy the requirements of coverage rate as well as energy saving. To solve the problems of unbalanced and inefficient energy consumption of nodes in random node scheduling schemes, a node scheduling scheme based on spatial resolution was proposed. This scheme maintained coverage rate by controlling the number of active nodes in a deployed area, and balanced the remaining energy of every node. Meanwhile, a neighbor nodes protection mechanism was adopted to ensure that the dormant nodes closed real-time listening to reduce energy consumption, and the demand of coverage rate was fulfilled effectively due to relieving the situation of coverage holes which may occur when nodes take turns to rest. The simulation results indicate the performance of this scheme is superior to other similar schemes in coverage rate, lifetime and balance of energy consumption among nodes.
2013, Vol. 33 
