Studing routing issues in vanets by using ns-3

Abstract

A Vehicular Ad-hoc Network (VANET) is a system of nodes (vehi- cles) that are being connected with each other by wireless technolo- gies. Usually the nodes are moving with very high speeds and, thus, the topology is unpredictable and frequently changing. Such networks can be stand alone and making paths along vehicles or may be con- nected by an infrastructure internet. System characteristics such as multi-hop paths, node mobility, large network size combined with de- vice heterogeneity, bandwidth and unlimited battery power make the design of routing protocols a major challenging. At the last year many routing protocols have been proposed for VANETs. The most of them has been implemented using Network Simulator 2 (NS-2). Network Simulator 3 (NS-3) that is going to replace NS-2 has not employed so far for implementing any routing protocol protocols for VANETs. The available routing protocols are Ad-Hoc On Demand Distance Vector Routing (AODV), Optimized Link State Routing (OLSR), Destination-Sequenced Distance-Vector (DSDV) and Dynamic Source Routing (DSR) that have been proposed for Mobile Ad-hoc Networks (MANETs). In this thesis, we implement and study the performance of a Position-Based Routing (PBR) protocol for VANETs by employ- ing NS-3 simulator and we nally compare its performance against AODV and OLSR routing protocols.