There is a significant increase in the rates of vehicle accidents in countries around the world and also the casualties involved ever year. New technologies have been explored relating to the Vehicular Ad Hoc Network ...There is a significant increase in the rates of vehicle accidents in countries around the world and also the casualties involved ever year. New technologies have been explored relating to the Vehicular Ad Hoc Network (VANET) due to the increase in vehicular traffic/congestions around us. Vehicular communication is very important as technology has evolved. The research of VANET and development of proposed systems and implementation would increase safety among road users and improve the comfort for the corresponding passengers, drivers and also other road users, and a great improvement in the traffic efficiency would be achieved. This research paper investigates the current and existing security issues associated with the VANET and exposes any slack amongst them in order to lighten possible problem domains in this field.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
车载网通过车辆与车辆(Vehicle to Vehicle,V2V)或车辆与路侧单元(Vehicle to Infrastructure,V2I)之间的数据传输实现通信。车载网络不同于传统无线网络,具有网络拓扑变化快、节点受限、网络间断性联通等特点。由于车辆高速移动以及街...车载网通过车辆与车辆(Vehicle to Vehicle,V2V)或车辆与路侧单元(Vehicle to Infrastructure,V2I)之间的数据传输实现通信。车载网络不同于传统无线网络,具有网络拓扑变化快、节点受限、网络间断性联通等特点。由于车辆高速移动以及街道障碍物阻挡等原因,车载网络分割现象更加严重,路由问题更加复杂。因此车载网中数据传输性能面临着信道负载大、传输延时高、带宽利用率低等的挑战。为了提高车载网数据传输的效率并降低转发延时,文中在混合通信结构(V2V&V2I)中,提出了一种改进的随机线性网络编码(Optimized Random Linear Network Coding,ORLNC)技术,同时采用车辆路径近似度来确定下一转发车辆节点。NS-3和MOVE仿真实验表明,ORLNC与现有的DDR协议算法相比,明显降低了转发延时,提高了传输效率,同时该协议算法不仅适用于密集车载网,也适用于稀疏场景中数据的传输。展开更多
文摘There is a significant increase in the rates of vehicle accidents in countries around the world and also the casualties involved ever year. New technologies have been explored relating to the Vehicular Ad Hoc Network (VANET) due to the increase in vehicular traffic/congestions around us. Vehicular communication is very important as technology has evolved. The research of VANET and development of proposed systems and implementation would increase safety among road users and improve the comfort for the corresponding passengers, drivers and also other road users, and a great improvement in the traffic efficiency would be achieved. This research paper investigates the current and existing security issues associated with the VANET and exposes any slack amongst them in order to lighten possible problem domains in this field.
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.
文摘车载网通过车辆与车辆(Vehicle to Vehicle,V2V)或车辆与路侧单元(Vehicle to Infrastructure,V2I)之间的数据传输实现通信。车载网络不同于传统无线网络,具有网络拓扑变化快、节点受限、网络间断性联通等特点。由于车辆高速移动以及街道障碍物阻挡等原因,车载网络分割现象更加严重,路由问题更加复杂。因此车载网中数据传输性能面临着信道负载大、传输延时高、带宽利用率低等的挑战。为了提高车载网数据传输的效率并降低转发延时,文中在混合通信结构(V2V&V2I)中,提出了一种改进的随机线性网络编码(Optimized Random Linear Network Coding,ORLNC)技术,同时采用车辆路径近似度来确定下一转发车辆节点。NS-3和MOVE仿真实验表明,ORLNC与现有的DDR协议算法相比,明显降低了转发延时,提高了传输效率,同时该协议算法不仅适用于密集车载网,也适用于稀疏场景中数据的传输。
