摘要
信任管理机制解决了来自无线传感器网络的内部攻击问题,但同时产生由信任评价带来的额外开销。现有的信任管理模型对节点信任度的评价缺乏公平性,导致节点使用率的降低。为了解决信任机制在无线传感器网络的耗能问题,提出了一种能量有效的平面式无线传感器网络信任模型。通过节点的自身性能与任务难度的关系定义节点的执行度,在确保信任管理有效性的同时,增强节点信任度评价的公平性,从而提高传感器节点的使用率,降低了能量消耗。最后通过模拟实验,证明该信任模型与传统信任模型相比,能够有效检测恶意节点,同时大大降低了节点的能量消耗,提高了网络生存周期。
Several trust models have been proposed to effectively solve insider attacks for wireless sensor networks. However, a trust scheme also leads to extra cost from the scheme itself. Furthermore, existing trust models lack the fairness of trust evaluation for sensor nodes. In order to overcome the drawbacks of trust schemes in wireless sensor networks, we propose an energy-efficient trust model for flat wireless sensor networks. In this paper, we define an Ex- ecutable Ability of a sensor node. Using the relationship between the ability of a sensor node and the difficulty of a task, our proposed model could improve the fairness of trust evaluation and enhance the efficiency of an individual node. The results of simulation show that our proposed model can rule out malicious nodes effectively, and improve the efficiency of nodes, decrease the energy expenditure of nodes, and prolong the lifetime of network.
出处
《传感技术学报》
CAS
CSCD
北大核心
2012年第11期1543-1548,共6页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(60973117)
