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在无线传感器网络信任模型中,为了解决信任值随着时间和上下文的行为变化而动态变化的问题,提出一种基于节点通信行为动态变化的信任模型.所提模型给出了节点间的直接信任和间接信任关系的度量、信任信息的合并、信任传递的合理抽象,并提出了一种信任更新机制.仿真结果表明,所提出的信任模型通过节点间通信行为的动态变化对信任值进行惩罚与调节,所得到的信任值能够更加敏感地反应节点间的行为变化,更加精确可靠地评价节点之间的信任关系.
In the WSN trust model, in order to solve the problem that the trust value changes dynamically with the time and the behavior of the context, a trust model based on dynamic changes in the communication behavior of nodes is proposed. The proposed model gives the direct trust between nodes And the indirect trust relationship, the merging of trust information and the reasonable abstraction of trust transfer, and puts forward a trust renewal mechanism.The simulation results show that the proposed trust model penalizes the trust value through the dynamic change of the communication behavior between nodes The trust values obtained can reflect the change of behavior between nodes more sensitively and evaluate the trust relationship between nodes more accurately and reliably.