Distance-Based Stable Routing Decision Scheme in Urban Vehicular Ad Hoc Networks

Sang-Woo Chang,Sang-Sun Lee

doi:10.1155/2015/245439

Abstract

A number of ad hoc routing protocols of vehicular ad hoc network (VANET) have been proposed and evaluated based on mobile ad hoc network (MANET) routing protocols. Although a large number of routing protocols have been developed in MANET, the VANET has different environments such as highly dynamic topology, frequently disconnected network, hard delay constraints for safety-related application, and various communications environments (e.g., highway or urban traffic scenarios). Therefore, development of a suitable routing protocol that considers these characteristics of VANET should be needed. In this paper we suggest the improved distance-based VANET routing protocol compared with the previous researches on urban traffic environments. We apply approaches to packet-collisions avoidance scheme in the intersection and to stable route decision scheme based on the adaptive waiting time. The performance is then evaluated under simulation which is implemented with the Manhattan urban traffic model. The results show the improved performance as compared with the previous researches.

Highlights

Vehicular ad hoc networks (VANETs) are an instantiation of mobile ad hoc networks (MANETs)
A large number of routing protocols have been developed in MANET, a VANET routing protocol has different requirements [8] compared with the MANET routing protocols because the VANET has particular network environment as follows
In order to evaluate the performance of the proposed protocol, we compare ours with other routing protocols such as ad hoc on-demand distance vector (AODV) [5], geographic source routing (GSR) [1], position-based on-demand VANET routing protocol (POVRP) [12, 13], and other urban VANET routing protocols [4] in using the same simulation parameters

Summary

Introduction

Vehicular ad hoc networks (VANETs) are an instantiation of mobile ad hoc networks (MANETs). We focus on an efficient and stable routing decision scheme with a consideration of those urban environmental factors rather than highway in vehicular ad hoc networks. It implies some problems with packet-collisions when the nodes are dense because in the intersection every node could compete with the same waiting time to broadcasting. We apply two major approaches which are the multihop broadcast scheme for fast and reliable packet dissemination in the intersection and more stable route decision scheme based on the prioritized adaptive waiting time using a relative distance and a relative velocity between vehicles in order to select the stable relay node.

Related Work

Stable Route Decision Scheme in Urban Vehicular Environments

Performance Evaluation

Findings

Conclusion