EE 400 Term Project A Survey of Vehicular Networks. Done by Saif AL Mustanier ID# Ali AL-Yami ID#

References: Denis Bakin; Evolution of (physical layer) Benjamin E. Henty; A Brief Tutorial on the PHY and MAC layers of the IEEE b Standard; July 12, 2001

Vehicular Networks (VANET) OUTLINE: Definition Application of VANET Physical layer Data link layer Network layer Transport layer

Definition of VANET A Vehicular Ad-Hoc Network, or VANET, is a form of mobile ad hoc network, to provide communications among nearby vehicles and between vehicles and nearest fixed equipment, usually described as roadside equipment. VANET using different ad-hoc networking technologies such as WiFi IEEE b/g, WiMAX IEEE , Bluetooth, IRA, ZigBee for easy, accurate, effective and simple communication between vehicles on dynamic mobility Source [1]

Application of VANET Comfort for the passenger. Helping Driver. Collision Avoidance.

Architecture of the VANET: Type of the used layer layered approach un-layered approach

The Physical Layer: 1. The Physical Layer Convergence Protocol (PLCP): provides a method for mapping the MAC sublayer protocol data units into a framing format suitable for sending and receiving data and management. 2. Physical Medium Dependent (PMD): The PMD interacts directly with the physical medium and performs the most basic bit transmission functions of the network. It is mainly responsible for encoding and modulation

Data link layer: Aloha CSMA CSMA is an improved Aloha protocol where the transmitter starts by sensing the channel before the transmission is initiated and only transmits if the channel is free

The Network layer The design of effective vehicular communications poses a series of technical challenges. multipath routing protocols vehicles are grouped according to their moving directions. To avoid link ruptures.

Transport Layer Vehicles are equipped with storage and processing devices. Unfortunately, studies have shown that TCP performance in VANET is very poor many solutions have been proposed. TCP variants entirely new transport protocols developed to replace TCP

Conclusion Definition Application of VANET Physical layer Data link layer Network layer Transport layer

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