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A congestion control scheme estimating global channel busy ratio in VANETs

Title
A congestion control scheme estimating global channel busy ratio in VANETs
Author
정재일
Keywords
Congestion control; Channel busy ratio; Vehicular Ad Hoc Networks; Transmission power control; Data rate control; Basic Safety Message
Issue Date
2017-06
Publisher
한국전기전자학회
Citation
전기전자학회논문지, v. 21, no. 2, page. 115-122
Abstract
In vehicular safety service, every vehicle broadcasts Basic Safety Message (BSM) periodically to inform neighbor vehicles of host vehicle information. However, this can cause network congestion in a region that is crowded with vehicles resulting in a reduction in the message delivery ratio and an increase in the end-to-end delay. Therefore, it could destabilize the vehicular safety service system. In this paper, in order to improve the congestion control and to consider the hidden node problem, we propose a congestion control scheme using entire network congestion level estimation combined with transmission power control, data rate control and time slot based transmission control algorithm. The performance of this scheme is evaluated using a Qualnet network simulator. The simulation result shows that our scheme mitigates network congestion in heavy traffic cases and enhances network capacity in light traffic cases, so that packet error rate is perfectly within 10% and entire network load level is maintained within 60~70%. Thus, it can be concluded that the proposed congestion control scheme has quite good performance.
URI
http://koreascience.or.kr/article/JAKO201720861274084.pagehttps://repository.hanyang.ac.kr/handle/20.500.11754/160835
ISSN
1226-7244; 2288-243X
DOI
10.7471/ikeee.2017.21.2.115
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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