Research Of Vehicle Communication Based On Named Data Networking

As a growing demand for cars in modern society and the fast development of Internet of things, more and more people begin to pay attention to transportation intelligence. Nowadays, the advent of the era of big data, the data itself has become the focus of users and applications more. Obviously, the host oriented IP network has is unable to meet the needs of users.NDN network(named as data network) architecture is the future network architecture centered around content. It has a essential difference from the IP which can make up for some defects of the IP network and brings new data package encapsulation structure and routing addressing mode instead of the original IP network by the strategy. NDN network architecture is more in line with the car networking requirements, using named data instead of IP address without any address information during the transmission process, with the focus of attention on the data instead of the data sources and the way to obtain. Moreover, the routing nodes in NDN network have the function of caching, using a wide range of data distribution to improve the efficiency of data access.However, NDN is still faced with many challenges in car networking, especially the forwarding strategy in the fast moving environment. Data measurement methods Is presented in this paper, providing basis for forwarding interest packet and cache the data packet. based on the research of traditional NDN mechanism, NDN system is applied to vehicle to vehicle communications, and interest packet forwarding and the caching strategy are designed.Different from the present packet forwarding mechanism based on distance from the broadcast packet forwarding mechanism in the NDN interest, this paper proposed method that through the evaluation of vehicle nodes on data of attention, forwarding increased data concern the comparison strategy, request the interest packets and data packets along the direction of attention degree increments of the spread in the inhibited the disordered interest broadcast packet and data packet channel congestion caused by, and in a certain extent against the packet loss phenomenon which is generated by the node distance and communication signal difference. The proposed method can improve the efficiency of content discovery, avoid the redundancy caused by the same data in the network, and increase the hit rate of the cache data.In order to evaluate the performance of the proposed strategy, this paper uses NDN simulation tool ndn SIM based on NS3 to carry out simulation experiment. Experimental results show that the modified forwarding strategy is more conducive to communication vehicle than existing mechanisms of NDN V2 V communication interest packet forwarding strategy. In addition it can effectively improve content discovery efficiency, reduce redundancy of the interest packet copy, and improve the quality of the communication...