Research On E-audiobook System Based On NDN In VANET

With the continuous development of the automobile industry and the transportation industry,the demand for In-Vehicle Infotainment is increasing,and the mutual entertainment of the driving has been paid more and more attention.However,the VANET network system based on TCP/IP architecture has some defects,such as centralized communication,poor disaster tolerance of single service node and delay of information response,which is mainly due to the IP network architecture to establish end-to-end communication.The researchs find that NDN has a natural support for mobility in mobile networks.When the vehicle leaves the original location,which has not received the requested data,do not need to maintain a connection with the data source,nor need to re-establish the connection,simply resend the request may be near the new location to obtain data.NDN Network is a future network architecture with data content as the center,replaces the IP address of existing network with named data,and changes the routing strategy of IP network with new packet structure and route forwarding mode,plus NDN network adopts network internal caching mechanism,using data forward caching to improve retrieval efficiency.NDN's unstructured architecture patterns are better suited to support unstructured VANET.The goal of this research is to design and develop an e-audiobook system based on NDN mechanism under the framework of VANET,without using the central server,so that the diver and passengers can open the system and search their favorite audiobook resources.The process of obtaining the audiobook resource files is realized by the NDN mechanism,the NDN node obtains the required data from other nodes through the forwarding mechanism,and caches the resource files to the local file library for easy usage and sharing,which satisfies the people's entertainment and leisure needs.The goal of this research is to study a traffic information sharing system based on NDN mechanism in VANET without using the central server.The whole system network vehicle from the group,each vehicle node serves as producer,the consumer and the forwarding person various roles.Vehicles unit is able to use the NDN mechanism to enable users to acquire and share audiobooks with each other,in the case of external servers by the surrounding vehicles to obtain resources,through the player to open the search and open their favorite audiobooks,will be driving leisure time to use up,increase information,entertainment and body.In this paper,according to the user in different scene and time period to the resource demand of different concept design different data scheduling scheme.In particular,the role in the general distribution of audiobooks and other resources,the significance of more significant.In view of the proposed NDN forwarding strategy algorithm for VANET,the NS3 based NDN simulation tool ndnSIM is used to evaluate the performance of this strategy.