可抵御节点恶意行为的锚节点型IP坐标系统

锚节点型IP坐标系统的性能受锚节点选择与布局情况以及节点恶意行为的影响较大,由此提出了一种新的可抵御节点恶意行为的锚节点型IP坐标系统(LCSD),锚节点按聚类最优化选择与布局,并采用协作推荐信任评估机制限制恶意节点对其他节点坐标更新的影响。从相对误差、邻居度和最近邻居可信度等方面分析了LCSD.结果表明与ICS相比,LCSD相对误差更小;不论恶意节点比例大小,LCSD邻居度和最近邻居可信度都较优越。

Landmark-Based IP Coordinate System with Defend-Capable Malicious Behaviors

The distance prediction performances of landmark-based IP coordinate system are sensitive to the selection and placement of landmarks and the malicious behaviors of some hostile nodes, which have greatly impact on the accuracy and trustiness of the predicted distances for most of applications. This paper proposes a new landmark-based IP coordinate system with defend-capable malicious behaviors (for short LCSD), in which the selection and placement of landmarks are optimized through the distance matrix clustering scheme, the malicious behaviors of hostile nodes are prohibited to disturb the coordinate update of the normal nodes through the cooperative recommending trust-evaluation mechanism. Finally by some simulations, its performances are analyzed in terms of the relative error (RE), the neighbor approximation degree. The closest neighbor trust degree, and the results show that LCSD has much smaller RE on the whole, and outperforms ICS in the neighborhood in despite of the proportion of hostile nodes to the all nodes.