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传感器节点可靠性差、资源有限,节点的性能和行为容易受到环境条件的影响,现有的信任管理系统大多没有考虑这一因素,导致它们难以有效识别正常工作的节点和“不诚实工作”的恶意节点.基于有效屏蔽网络环境干扰判断节点状态的动机,提出一种新颖的信任管理系统的整体框架,并详细给出了状态评价模块、环境探测模块和信任建立模块等三个核心模块的实现方法.理论分析和仿真实验证明了该系统在不同环境条件下均能有效识别正常节点和恶意节点,与RFSN信任管理系统相比,具有较为明显的优越性.
The reliability of sensor nodes is poor and the resources are limited. The performance and behavior of nodes are easily affected by environmental conditions. Most of the existing trust management systems do not consider this factor, which makes it difficult for them to effectively identify nodes and “dishonest work” Based on the motivation of effectively judging the state of network interference, a new framework of trust management system is proposed, and three core modules of state evaluation module, environment detection module and trust establishment module are given in detail The theoretical analysis and simulation results show that the system can effectively identify normal nodes and malicious nodes under different environmental conditions, which has obvious advantages compared with the RFSN trust management system.