Position Based and Cognitive Radio in VANET for Avoiding Traffic Congestion

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Provided by: The International Journal of Innovative Research in Computer and Communication Engineering
Topic: Mobility
Format: PDF
Inter-Vehicle Communication System (IVCS) built in a city environment faces greater challenges because of uneven distribution of vehicular nodes, mobility constrained and difficult signal reception due to radio obstacles such as high rise buildings. This paper proposes a new position-based routing scheme designed specifically for IVCS in a city environment and for the roadside equipment using a Cognitive Radio to allocate a multiple channel for communicating between vehicles and infrastructure to provide a safety messaging to handle emergency situation. Currently VANET is implemented using ETT and ETX (EXpected Transmission count) system which uses Waited Corrective Expected Transmission Time (WC ETT) mechanism.
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