NDLI: An efficient QoS MAC for IEEE 802.11p over cognitive multichannel vehicular networks

Content Provider	IEEE Xplore Digital Library
Author	Ajaltouni, H.E. Pazzi, R.W. Boukerche, A.
Copyright Year	2012
Description	Author affiliation: NSERC DIVA Research Center, SITE, University of Ottawa, Ottawa, Canada (Ajaltouni, H.E.; Pazzi, R.W.; Boukerche, A.)
Abstract	One of the most challenging issues facing vehicular networks lies in the design of an efficient MAC protocol adaptable to different traffic scenarios (urban and suburban environments). While each environment has its own characteristics leading to different challenges, the merit of this paper lies in developing a MAC protocol suitable for both. In this work, we propose an efficient Multichannel QoS Cognitive MAC solely dedicated for Vehicular Environments (MQOG). MQOG incorporates efficient channel negotiation on the dedicated control channel whereas data is transmitted on other channel without contention. Since vehicular environments are widely known to suffer from interference and multipath, MQOG assesses the quality of channel prior to transmission employing a dynamic channel allocation and negotiation algorithm to achieve significant increase in channel reliability and throughput. The channel assignment problem was solved in an integrated manner while taking into account the QoS of different frames(Safety and NonSafety. The uniqueness of this protocol lies in making use of the ISM Band and UNII-3 in case all available channels in DSRC were considered unreliable. The proposed protocol was implemented in OMNET++ 4.1 and extensive experiments demonstrated that the proposed MAC ensures the reception of safety messages much faster, more efficient and reliable than other existing VANet MAC Protocols.
Starting Page	413
Ending Page	417
File Size	387789
Page Count	5
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6364353
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vehicles Safety Media Access Protocol Quality of service Interference Throughput
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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