车载自组网基于竞争的MAC协议IEEE 802.11P存在预见性、公平性、低吞吐量、延迟性、高碰撞率等问题。提出基于集群协作的MAC协议CCBM(an cooperative cluster-based MAC protocol for VANETs),解决节点接入信道的公平性问题,同时提高信...车载自组网基于竞争的MAC协议IEEE 802.11P存在预见性、公平性、低吞吐量、延迟性、高碰撞率等问题。提出基于集群协作的MAC协议CCBM(an cooperative cluster-based MAC protocol for VANETs),解决节点接入信道的公平性问题,同时提高信道的利用率和有效地适应网络拓扑变化。理论计算和仿真结果显示,选择集群头节点HN(head node)的平均时隙小于IEEE 802.11P 50%,稳定性增加50%。展开更多
Recent advances in wireless communication technologies and auto-mobile industry have triggered a significant research interest in the field of vehicular ad-hoc networks （VANETs） over the past few years. A vehicular ...Recent advances in wireless communication technologies and auto-mobile industry have triggered a significant research interest in the field of vehicular ad-hoc networks （VANETs） over the past few years. A vehicular network consists of vehicle-to-vehicle （V2V） and vehicle-to-infrastructure （V2I） communications supported by wireless access technologies such as IEEE 802.11p. This innovation in wireless communication has been envisaged to improve road safety and motor traffic efficiency in near future through the development of intelligent transportation system （ITS）. Hence, governments, auto-mobile industries and academia are heavily partnering through several ongoing research projects to establish standards for VANETs. The typical set of VANET application areas, such as vehicle collision warning and traffic information dissemination have made VANET an interesting field of mobile wireless communication. This paper provides an overview on current research state, challenges, potentials of VANETs as well as the ways forward to achieving the long awaited ITS.展开更多
基金supported by a Grant-in-Aid for Scientific Research from Ebonyi State Government(EBSG)(No.EBSG/SSB/PS/VII/105)
文摘Recent advances in wireless communication technologies and auto-mobile industry have triggered a significant research interest in the field of vehicular ad-hoc networks （VANETs） over the past few years. A vehicular network consists of vehicle-to-vehicle （V2V） and vehicle-to-infrastructure （V2I） communications supported by wireless access technologies such as IEEE 802.11p. This innovation in wireless communication has been envisaged to improve road safety and motor traffic efficiency in near future through the development of intelligent transportation system （ITS）. Hence, governments, auto-mobile industries and academia are heavily partnering through several ongoing research projects to establish standards for VANETs. The typical set of VANET application areas, such as vehicle collision warning and traffic information dissemination have made VANET an interesting field of mobile wireless communication. This paper provides an overview on current research state, challenges, potentials of VANETs as well as the ways forward to achieving the long awaited ITS.
