Content Distribution using Network Coding in Vehicular Ad-Hoc Network (VANET)

Abstract

Vehicular Ad-Hoc Network (VANET) is a form of Mobile ad-hoc network that provides communication between vehicles and between infrastructure (Road Side Unit) and vehicles. Various approaches of data dissemination is used to distribute data among vehicles in vehicular network. Here, data dissemination approaches, mechanisms, medals are extensively reviewed and concluded that data dissemination techniques depends on the type of application and data to be transmitted among vehicles. However, type of VANET applications and inherent characteristics such as different network density, fast movement of vehicles make data dissemination quite challenging. Network coding is a mechanism in which nodes encode two or more incoming packets and forward encoded packets instead of forwarding them as it is. In the network coding, the reception of data does not depend on receiving specific packets but on receiving sufficient number of independent packets. We use network coding in which packets are grouped into generations. The goal of the project is to create protocol that distribute content using network coding to improve the performance. The propose protocol works in two modes: Adhoc mode and Infrastructure mode. In Adhoc mode, vehicles are communicating with each other to transfer different contents. While in Infrastructure mode, vehicles are communicating with Road Side Units for different contents. By using simulation we compared the proposed protocol in terms of delay and delivery ratio using conventional scheme and same protocol using network coding.