A Novel Mac Based Congestion Control System for VANET with Adaptive Routing
International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Open Access | Fully Refereed | Peer Reviewed International Journal

ISSN: 2319-7064



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M.Tech / M.E / PhD Thesis | Electronics & Communication Engineering | India | Volume 3 Issue 6, June 2014

A Novel Mac Based Congestion Control System for VANET with Adaptive Routing

Mahanthgouda, Sridhara. K

VANET is a inter vehicular and vehicle-road side unit wireless communication network that was evolved specifically for exchanging GPS data among vehicles along with exchanging important alert messages like congestion notification. VANET differs from other wireless networks like MANET and WSN in data transmission and routing because the links changes very fast due to mobility of the vehicle. Therefore transmission of alert message quickly is an important aspect of it. There are several techniques being proposed that claims to achieve quick alert message propagation. But studies shows that MAC frames are of highest priority in VANET. Therefore any top layer protocol does not suit alert message exchange. Hence in this work we propose a unique technique to dissipate alert message by using a special MAC priority frame. MAC layer subscribe to mobility state change. When congestion or an accident scenario is detected by means of acceleration becoming zero; application layer immediately transmits notification. MAC also subscribes to the same notification board. Hence once alert message is triggered it switches the channel to highest priority channel and then appends a special field in the MAC frame. This message is propagated to road side coordinator and from coordinator is transmitted all the vehicles in the range. The work is simulated using Omnet++ 4.2. Results shows that proposed technique can mitigate alert message with significantly low latency and high packet success rate.

Keywords: Emergency message, dedicated short-range communications DSRC, Vehicular ad hoc network VANET, Beacon

Edition: Volume 3 Issue 6, June 2014

Pages: 1842 - 1847

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How to Cite this Article?

Mahanthgouda, Sridhara. K, "A Novel Mac Based Congestion Control System for VANET with Adaptive Routing", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=02014653, Volume 3 Issue 6, June 2014, 1842 - 1847

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