ee 400 term project
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EE 400 Term Project
A Survey of Vehicular Networks.Done by
Saif AL Mustanier ID#2264840Ali AL-Yami ID# 245786
References:• http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber• http://www.ieee802.org/11/PARs/index.html#Active• Denis Bakin; Evolution of 802.11 (physical layer)• Benjamin E. Henty; A Brief Tutorial on the PHY and MAC layers of the IEEE
802.11b 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 802.11 b/g, WiMAX IEEE 802.16, 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
Thank You
I am ready to answer your questions
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