Performance Study of Multi-Path in VANETs and Their Impact on Routing Protocols

Jing Wu,Yuhao Wang

doi:10.4236/wet.2011.23018

Abstract

Modeling complicated vehicular traffic behavior and analyzing effects on the communication performance of routing protocols taken by environmental factors have been a challenging task for the past several years. In this paper, we study the performance of multi-path routing protocol. Then, we investigate both multi-path and single-path routing protocol and analyze characteristics such as network connectivity, vehicle-node density etc. To better understand this phenomenon, we use mobility model with different parameters and evaluate the performance of routing protocols (Ad-hoc On-Demand Distance Vector and Ad-hoc On-demand Multipath Distance Vector routing protocols) through NS2 platform. The simulation results show the significance of multi-path on the throughput, loss and average delay of VANETs. The results of this paper may be used to study designing route protocols and applications of VANET.

Highlights

Vehicular Ad hoc Networks (VANETs) as a new type of ad hoc network has been envisioned for inter-vehicle communications
The main aim of traditional routing protocols in VANETs is to discover a single path from source node to destination node
Source mode to the destination node has multi-paths, making the routing protocol to better adapt to VANETs dynamics, topology and unpredictable characteristics [6]

Summary

Introduction

Vehicular Ad hoc Networks (VANETs) as a new type of ad hoc network has been envisioned for inter-vehicle communications. [1] has shown that in this type of network, the vehicles are the mobile nodes of the network. The main aim of traditional routing protocols in VANETs is to discover a single path from source node to destination node. Because these routing protocols use a single path, they do not fully use a route discovery information. Multi-path routing is defined between the source node and destination node creates multiple transmission paths, and allows nodes to choose how to use these paths [4,5]. Source mode to the destination node has multi-paths, making the routing protocol to better adapt to VANETs dynamics, topology and unpredictable characteristics [6].

Multi-Path Type Selection

Multi-Path Routing Protocols Analysis

The Integration of Multi-Path and VANETs

Simulation Scenarios and Parameters

Simulation Results Analysis

Conclusions