基于软件定义网络的车载网络路由

Vehicular Networks Routing for Software Defined Vehicular Networks

软件定义车载网络(Software Defined Vehicular Networks,SDVN)能够从鸟瞰的角度观察网络,能够寻找更优化的路由,传递更多的数据包。然而,由于车载网络的动态性,控制平台不可能拥有所有网络信息。考虑到这些因素,针对SDVN,提出新的混合车载网络路由框架(Hybrid Vehicular Networks Routing Framework,HVNRF)。该框架旨在寻找稳定多条短路由,完成多个数据包的传递。HVNRF将总体网络问题构造出最小成本约束流量问题,其涉及到最大流量问题和最小成本流量问题,并以低时间复杂度方式解决此问题。仿真结果表明,提出的HVNRF框架优于现存的SDVN和VANET路由方案。

Software Defined Vehicular Networks(SDVN)provides a bird’s eye view over the network,d optimized routes can be found to deliver more number of packets.Due to dynamicity in vehicular networks,the control plane may not possess all the network information.Considering all these factors,a novel Hybrid vehicular network routing framework(HVNRF)for SDVN is proposed in this paper.The resulting hybrid routing framework focuses on finding stable multiple short routes that can deliver a given number of packets.The overall routing problem is formulated as a minimum cost capacitated flow problem by adhering the features of both maximum flow problem and minimum cost flow problem.The problem is solved with a less time complexity.The simulation results showed that the proposed routing framework outperforms the existing SDVN and VANET routing schemes.