| 摘要: |
| WMN(wireless mesh network)网络环境中,网络拓扑结构的改变或无线冲突的发生,都可能导致作为信任值评估证据的样本空间不一定完整和可靠,使得现有的信任评估模型不能应用其上.为了解决WMN网络节点间信任评估问题和建立信任关系,在研究现有信任模型并分析其存在问题的基础上,提出了基于不确定性度量极小化的信任模型.模型引入可信任度因子,根据网络实际情况,弱化证据样本空间不一定完整和可靠对信任值评估的影响,使得信任评估值的修正量在全局范围内达到最小.仿真实验与基于证据理论的信任评估模型进行了对比 |
| 关键词: WMN 信任模型 不确定性度量 极小化 证据理论 |
| DOI： |
| 分类号: |
| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60673142, 60473090 (国家自然科学基金) |
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| Trust Model Based on Minimal Uncertainty Metric in Wireless Mesh Network |
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DING Xu-Yang,FAN Ming-Yu,ZHU Da-Yong,WANG Jia-Hao
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| Abstract: |
| In wireless mesh networks, the sample space of evidence may be not integrative or reliable because of the change of network topology and the occurrence of wireless collision. It makes the existing trust evaluation models inapplicable. To evaluate trust values of nodes and establish trust relationship in nodes, a trust model is proposed on the basis of the analyses of the existing trust models and the minimal principle of uncertainty metric. The model reduces the influence of the non-integrated and unreliable sample space through importing a credible parameter. According to the real situation of networks, the model can minimize the amendment of evaluation values in the whole scope. Contrasted with the evidence-based trust model, the simulation results show that the proposed model is effective. |
| Key words: wireless mesh networks trust mode uncertainty metric minimal evidence theory |
