车载自组网的自适应证书分发策略

Adaptive certificate distribution strategy in vehicular ad hoc network

提出了一种自适应证书分发策略,能够根据各种环境动态调整分发方式获得最优均衡解。首先,设置一个可以根据交通环境和安全状况自适应调整的阈值,当该阈值小于给定的新车占比时,节点将发送带有证书的数据包;否则,将发送没有证书的包。然后,提出了一个量化模型来评估车载自组网的收益,包括计算和分析发送/接收节点的开销、安全性和损耗等。仿真结果表明,本文所提出的策略在各种交通条件下都能很好地平衡性能和安全。

An adaptive certificate distribution strategy is proposed,which can dynamically adjust the distribution mode according to various environments to obtain the optimal equilibrium solution.First,set a threshold which can be adjusted adaptively according to the traffic environment and safety conditions.When the threshold value is less than the given proportion of new cars,the node sends packets with certificates.Then,a package without a certificate is sent.A quantitative model also is proposed to evaluate VANET′s incomes,including computing and analyzing the overhead,security and loss of sending/receiving nodes.The simulation results show that the proposed strategy can balance performance and safety well under various traffic conditions.