Due to special characteristics of Vehicular Networks, QoS (Quality of Service) provisioning in these networks is a challenging task. QoS refers to the capability of a network to provide better service to selected network traffic over various technologies. In this paper we present a novel architecture and protocol stack which aims to improve QoS in Wide Vehicular Communications. | International Journal of Computer Networks and Communications Security VOL. 4, NO. 3, MARCH 2016, 78–88 Available online at: E-ISSN 2308-9830 (Online) / ISSN 2410-0595 (Print) A Proposed Architecture and Protocol Stack for Improving QoS in Wide Vehicular Communications Mohammadreza Pourkiani1, Sam Jabbehdari2 and Ahmad Khademzadeh3 1 Department of Information Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran 2 3 Department of Computer Engineering, Tehran North Branch, Islamic Azad University, Tehran, Iran Iran Telecommunication Research Center, Department of National International Cooperation, Tehran, Iran E-mail: , 2s_jabbehdari@, 3Zadeh@ ABSTRACT The Intelligent Transportation System (ITS) is a system which is able to exchange information between Vehicles, Roadside Units, Base Stations and Infrastructure to enhance the safety of transportation. It is also able to provide internet connectivity and many different services to the users. Vehicular Networks, provides Vehicle to Vehicle (V2V), Vehicle to Roadside (V2R) and Vehicle to Infrastructure (V2I) communications and it plays an important role in Intelligent Transportation System. Due to special characteristics of Vehicular Networks, QoS (Quality of Service) provisioning in these networks is a challenging task. QoS refers to the capability of a network to provide better service to selected network traffic over various technologies. In this paper we present a novel architecture and protocol stack which aims to improve QoS in Wide Vehicular Communications. Keywords: VANET, QOS, ITS, Protocol Stack, Wireless Networks. 1 INTRODUCTION Intelligent Transportation System The Intelligent Transportation System is a system which is able to exchange different kinds of information of its moving objects and is based on the increasing demands of the transportation development. ITS converges remote sensing and communication .
