University:
California State University, East Bay
Course:
CS 3590 | Data Communications and Networking
Academic year:

2023
Views:

86

Pages:

2
Author:

Jithin J I

INTRODUCTION TO VANET Vehicular Ad-hoc Networks (VANETs) are a key component of Intelligent Transportation Systems (ITS). They allow vehicles to communicate with each other (V2V), with roadside infrastructure (V2I), and with other entities (V2X) in real-time. Origin and Evolution The concept of VANETs was proposed in 2001 by Chen, Kung, and Vlah to enable vehicle and infrastructure information sharing. In 2013, the US Department of Transportation and automotive manufacturers tested V2V communication for safety applications. With 5G, VANET interactions expanded beyond V2V and V2I to include communication with drivers, pedestrians, cloud servers etc. Applications VANETs enable a variety of applications:  Safety applications - collision avoidance, emergency warnings  Traffic management - traffic optimization, route planning  Driver assistance - navigation, parking assistance  Infotainment - internet access, media streaming  Urban sensing - gathering and sharing data about road conditions Features Some key features of VANETs:  Highly dynamic topology due to vehicle mobility  Frequent disconnections as nodes move out of range  Geographical addressing based on position rather than ID  Limited mobility predictability based on roads, speed limits etc.  Challenging wireless propagation environments Routing Protocols and Security Various routing protocols and security considerations exist for VANETs. Key protocols include DSDV, AODV, DSR. Security aspects include availability, authentication, privacy, integrity. Mobility Models and Implementation Mobility models like Gauss-Markov model the movement patterns of vehicles. VANETs can be implemented through simulations and testbeds using various hardware/software platforms.