无线传感器网络的基于信任管理的分布式高可靠覆盖机制

Highly reliable distributed coverage mechanism based on trust management for wireless sensor networks

为解决无线传感器网络中的安全覆盖问题,将覆盖算法整合到信任管理系统中,提出了一种基于信任管理的分布式高可靠覆盖机制(HRCMTM)。通过分析信任管理系统的潜在要求,从理论上推导和分析了网格尺寸选择。引入动态信任阈值新的概念,定量分析了覆盖节点集大小、联合信任度与动态信任阈值之间的关系。在此基础上,设计了确保可靠覆盖目标区域的节点调度覆盖算法。仿真结果验证了这一新的机制在覆盖率和联合信任度等方面的有效性。

To realize the secure coverage in wireless sensor networks, a Highly Reliable distributed Coverage Mechanism based on Trust Management （HRCMTM） was proposed by integrating a coverage algorithm into a trust management system. Through the analysis of the underlying requirements of trust management systems, the proper grid size was derived theoretically. The new concept of dynamic trust threshold was introduced to quantitatively analyze the rela- tionship between the size of coverage node set, the joint trust level and the dynamic trust threshold. Futher more, a node scheduling coverage algorithm was designed to guarantee that the target area is covered reliably. The experimental results demonstrated the effectiveness of this mechanism in terms of coverage ratio and joint trust level.