无线传感器网络中基于网格信任度的可靠覆盖算法研究

针对节点的覆盖优化过程极易受到各种攻击的问题, 通过从信任管理的框架内深入探索可靠覆盖技术, 提出了一种基于网格信任度的可靠覆盖算法。该算法对节点进行可靠性筛选和轮换调度, 以并行覆盖的方式对覆盖区域内的网格点实施基于信任度的覆盖。对节点信任阈值的取值进行讨论, 分析得出信任阈值的大小对整个覆盖区域的安全性和覆盖质量有很大影响。经过仿真与传统的单一覆盖机制作比较, 该算法能有效提高网络安全性和延长网络寿命。仿真结果验证了算法的有效性和分析的正确性。

Research on reliable coverage algorithm based on grid trust value for wireless sensor networks

To solve the problem that nodes can easily suffer from various attacks during the process of coverage optimization, this paper discussed reliable coverage technology on the basis of the trust management system framework, and proposed a reliable coverage algorithm based on grid trust value. The algorithm performed the reliability screening and rotation scheduling on nodes, and the coverage based on the credibility of grid point by the way of parallel coverage. After discussing the value of the trust threshold, the paper found that it had a significant influence on the security of whole coverage area and the coverage quality. By comparing the new algorithm with traditional single coverage algorithms, the algorithm can improve the security and network lifetime effectively. Simulation experiments show the effectiveness of this algorithm and reflect the correctness of the analysis.