基于混合结构VANETs的安全消息传播算法

Security message propagation algorithm based on hybrid structure VANETs

为提高车载网VANETs(vehicle Ad Hoc networks)中安全消息的传播性能,提出基于IEEE 802.11p和长期演进LTE(long-term evolution)的混合结构VANETs的安全消息传播算法,记为IEEE-LTE,其目的在于降低安全消息的传输时延和提高安全消息的传输成功率。当基于IEEE 802.11p网络割裂时,利用LTE形成节点间的连通,提高安全消息传播的性能。IEEE-LTE是基于簇化的拓扑,簇头具有IEEE 802.11p和LTE的双重接口,链接VANETs和LTE网络,簇头利用IEEE 802.11p与簇成员节点通信,利用蜂窝技术与基站通信。仿真结果表明,IEEE-LTE算法能够获取高安全消息传输成功率,维持低时延。

To improve performance of safety message dissemination of vehicle Ad Hoc networks （VANETs） 〉 IEEE 802. lip and LTE based hybrid architecture for VANETs safety message dissemination algorithm was proposed, which was marked as IEEE- LTE. The goal of IEEE-LTE was to disseminate the data generated in the network to all the vehicles with small delay and high message delivery ratio. LTE was used to provide the connectivity of nodes when the IEEE 802. 11p based network was discon-nected within, and the delay and reliability performance of transmission was improved. IEEE-LTE was based on clustered topolo-gy, elected CHs （cluster head） to operate as dual-interface nodes with the functionality of the IEEE 802.11p and LTE interface to link the VANETs to the LTE network. Simulation results show that the proposed IEEE-LTE can get a higher message delive-ry ratio and keep low dissemination delay.