| As people’s requirements for driving safety are increasing,people concern how to provide a safe driving experience.In Vehicles ad hoc Networks(VANETs),the mobility of vehicles leads to the problems of the unreliability of communication links,so the realization of efficient and secure information interaction between vehicles is the focus of researchers.In VANETs,the traditional IP-based network architecture has problems of poor mobility and flexibility,lack of security,etc.And the destination address is necessary when transmitting data.It is difficult to meet the requirements of people in VANETs environments.Named data network(NDN)is a future network system,it replaces the original IP network routing strategy with the new packet encapsulation structure and routing addressing method,the system has natural compatibility with the vehicle environment.In this paper,NDN architecture is deployed in VANETs called vNDN.The structure of Forwarding Information Base(FIB),Pending Interest Table(PIT),Content Store(CS),etc.in the traditional NDN is realized by some certain data structure,and the concept of social relationship is introduced,and routing is performed according to the social relationship between the nodes.Then,under the vNDN architecture,various communication modes such as unicast,multicast,and broadcast of data are implemented,and traffic scenarios are designed according to different communication modes,including unicast-based parking lot empty parking space addressing system,location-based traffic situation broadcast scenario,multicast-based fleet reminder service,for the purpose of realizing the safety early warning system in VANETs,ensuring the safety of the driver and improving the traffic efficiency,and assisting the intelligent driving.In addition,the data security problem is considered in vNDN,and the data is encrypted by Attribute Based Encryption(ABE)to ensure the security of the data in the transmission process.The whole vNDN system is deployed on On Board Unit(OBU),design experiments verify the effectiveness of the security early warning system.The performance of the security system is evaluated by testing the communication parameters such as communication delay,packet loss rate and throughput with distance changes in the traffic scenario. |
