Abstract: Classical Coverage-Preserving Nodes Scheduling Algorithm(CPNSS) of the Wireless Sensor Network(WSN) has the problems of low efficiency and energy non-balance. According to the problems, this paper proposes an improvement algorithm. It divides all the nodes into some dissimilar set, sets a priority-weight for each set by its average energy, and selects different sets to work according to their priority-weight, so as to achieve the balance of the node energy and prolong the life-time of the network. Experimental results prove its effectiveness.

Key words: Wireless Sensor Network(WSN), coverage, energy balance, weight value

摘要： 针对无线传感器网络中覆盖保持的节点调度算法存在的利用率低、能量不均衡问题，提出一种改进的算法，将网络节点划分为若干个相异的节点集合，根据集合平均能量设置一个权值，通过权值大小选取合适的节点集合进行工作，从而均衡节点能量、延长网络的生命期。通过模拟仿真实验证明了算法的有效性。

关键词: 无线传感器网络, 覆盖, 能量均衡, 权值

CLC Number: 

• TP301.6