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• Rahman, M
• Hong, C
• Lee, S
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• Hong, C
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• Rahman, M
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Sensors 2010, 10(11), 9771-9798; doi:10.3390/s101109771

Article

MQ-MAC: A Multi-Constrained QoS-Aware Duty Cycle MAC for Heterogeneous Traffic in Wireless Sensor Networks

Muhammad Mostafa Monowar, Md. Obaidur Rahman, Choong Seon Hong *  and Sungwon Lee

Department of Computer Engineering, Kyung Hee University, Seocheon, Giheung, Yongin, South Korea

* Author to whom correspondence should be addressed.

Received: 17 September 2010; in revised form: 8 October 2010 / Accepted: 15 October 2010 / Published: 1 November 2010

(This article belongs to the Section Physical Sensors)

Download PDF Full-Text [499 KB, uploaded 1 November 2010 16:07 CET]

Abstract: Energy conservation is one of the striking research issues now-a-days for power constrained wireless sensor networks (WSNs) and hence, several duty-cycle based MAC protocols have been devised for WSNs in the last few years. However, assimilation of diverse applications with different QoS requirements (i.e., delay and reliability) within the same network also necessitates in devising a generic duty-cycle based MAC protocol that can achieve both the delay and reliability guarantee, termed as multi-constrained QoS, while preserving the energy efficiency. To address this, in this paper, we propose a Multi-constrained QoS-aware duty-cycle MAC for heterogeneous traffic in WSNs (MQ-MAC). MQ-MAC classifies the traffic based on their multi-constrained QoS demands. Through extensive simulation using ns-2 we evaluate the performance of MQ-MAC. MQ-MAC provides the desired delay and reliability guarantee according to the nature of the traffic classes as well as achieves energy efficiency.

Keywords: multi-constrained QoS; heterogeneous traffic; duty cycle MAC

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