Network codes-based content-centric transmission control in VANET

摘要

The boost of wireless technology brings dramatic growth for Vehicular ad-hoc networks(VANETs). The effective routing and forwarding protocol is critical for the performance of VANETs thus influence the automatic driving and information distribution. The dynamic characteristic of vehicle to vehicle(V2V) communications makes it hard to maintain a reliable path between vehicles. In order to improve transmission performance in VANETs, we make full use of the Content-centric information dissemination, and there are some existing efforts on proving feasibility of content-centric network(CCN). In this paper, we propose a novel Source Selection Dynamically Network Coding-based Information Centric Network protocol (SSDNC), which introduces CCN architecture in VANET. SSDNC exploit the features of CCN to make multiple sources exist. With the application of Analytic Hierarchy Process(AHP), requested symbols can be distributed adaptively to different interfaces according to their weight. Then the forwarding decisions will be made to obtain the information that makes transmission more effective. Moreover, we take advantage of network coding (NC) to eliminate the network redundancy for the purpose of achieving higher performance. We evaluate the performance of the SSDNC using ndnSIM over NS-3 network simulator, which focused on the size of chunk, throughput and average transmission delay and compared with ICTP [1]. The result shows that the performance of our protocol is better than ICTP.