NDLI: Modelling a vehicle-ID-based IEEE 802.11OCB MAC scheme for periodic broadcast in vehicular networks

Content Provider	IET Digital Library
Author	Verma, Poonam Singh, Neeta Sharma, Mohit
Abstract	Periodic broadcast of cooperative awareness messages (CAMs) is of great importance considering safety-related applications, for a network like VANET. This study proposes a vehicle-identifier (ID)-based MAC scheme for the periodic broadcast of CAMs in a vehicular network. Each CAM generated by a vehicle is associated with a unique ID. This study uses this attribute of CAM messages while participating in the channel assessment procedure. Each vehicle weighs the random back-off number with the unique ID incorporated in their respective CAM. This eventually leads to the selection of a vehicle-ID-based random back-off number, mitigating all possible probabilities of collision due to same back-off number selection. The simulation is performed considering saturated traffic conditions, to analyse its behaviour under most critical situations. The proposed model eliminates the chances of selecting zero as the initial back-off number, eliminating any chances of consecutive freeze process. The proposed one-dimensional Markovian model is validated by MATLAB. The proposed model provides a clear depiction that it performs better than the traditional IEEE 802.11OCB used for VANET. Also, it is worth noting that the achieved results outperform the existing work in terms of average packet delay since nearly one-fourth of the contention window size is utilised throughout the simulation.
Starting Page	2401
Ending Page	2407
Page Count	7
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 19, Dec (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/19
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.5488
Journal	IET Communications
Publisher Date	2018-08-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Access Protocols Ad Hoc Network Awareness Messages CAM Messages Channel Assessment Procedure Computer Communication Great Importance Considering Safety-related Application Local Area Network Markov Processes Mobile Radio System Number Selection One-dimensional Markovian Model Periodic Broadcast Probability Protocol Radio Link And Equipment Respective CAM Statistics Telecommunication Traffic Traditional IEEE 802.11OCB Unique ID VANET Vehicle-ID-based IEEE 802.11OCB Vehicle-ID-based Medium Access Control Scheme Vehicular Ad Hoc Network Vehicular Network Wireless LAN
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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