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EE 400 Term Project

This survey provides an overview of vehicular networks (VANETs), including their definition, applications, and different layers such as the physical, data link, network, and transport layers. It also highlights the challenges associated with designing effective vehicular communications. The survey concludes with a discussion on possible solutions and alternative transport protocols for VANETs.

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EE 400 Term Project

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  1. EE 400 Term Project A Survey of Vehicular Networks. Done by Saif AL Mustanier ID#2264840 Ali AL-Yami ID# 245786

  2. 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

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

  4. 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]

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

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

  7. 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

  8. 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

  9. 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.

  10. 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

  11. Conclusion • Definition • Application of VANET • Physical layer • Data link layer • Network layer • Transport layer

  12. Thank You I am ready to answer your questions

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