Universiti Teknologi Malaysia Institutional Repository

Congestion control framework for disseminating safety messages in vehicular Ad-Hoc networks (VANETs)

Darus, M. Y. and Abu Bakar, Kamarulnizam (2011) Congestion control framework for disseminating safety messages in vehicular Ad-Hoc networks (VANETs). International Journal of Digital Content Technology and its Applications, 5 (2). pp. 173-180. ISSN 2233-9310

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Official URL: http://dx.doi.org/10.4156/jdcta.vol5. issue2.20.

Abstract

The purpose of this study is to propose a new congestion control framework for uni-priority of event-driven safety messages in VANETs. The uni-priority congestion is caused by the traffic of the same priority. Many of event-driven safety applications developed for VANETs is required real-time communication with high reliability and must be delivered before certain time deadline. In high load traffic, the CCH communication channel easily congested. Many studies [2,10,11,12] recommended congestion control approach to control the load and congestion on the wireless channel in VANETs. Our proposed congestion control will reserve the CCH communication channel for event-driven safety messages if the number of safety messages in the queue exceeds a defined threshold or the congestion control detect event-driven safety message. In normal traffic, the CCH communication channel is not reserve for event-driven safety messages. This research will adapt priority-based Earliest Deadline First (EDF) scheduling algorithms in proposed congestion control to schedule uni-priority of eventdriven safety messages. In addition, to provide reliability performance for event-driven safety messages, we will develop a new rebroadcasting scheme to prevent broadcast storm. In next phase of study, we plan to test and evaluate performance of our congestion control approach using network simulator e.g. NS-3.

Item Type:Article
Uncontrolled Keywords:VANETs, IEEE 802.11p, CSMA/CA, congestion control, safety messages
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:Computer Science and Information System (Formerly known)
ID Code:28881
Deposited By: Liza Porijo
Deposited On:30 Nov 2012 00:59
Last Modified:30 Nov 2012 00:59

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