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Dr. S. M. Kamruzzaman

Assistant Professor

Department of Software Engineering, College of Computer and Information Sciences

علوم الحاسب والمعلومات
Building No. 31, Level 2
publication
Journal Article
2010

An energy efficient MAC protocol for QoS provisioning in cognitive radio ad hoc networks

Kamruzzaman, S. M. . 2010

The explosive growth in the use of real-time applications on mobile devices has resulted in new challenges to the design of medium access control (MAC) protocols for ad hoc networks. In this paper, we propose an energy efficient cognitive radio (CR) MAC protocol for QoS provisioning, called ECRQ-MAC, which integrates the spectrum sensing at physical (PHY) layer and the channel-timeslots allocation at MAC layer. We consider the problem of providing QoS guarantee to CR users as well as to maintain the most efficient use of scarce bandwidth resources. The ECRQ-MAC protocol exploits the advantage of both multiple channels and TDMA, and achieves aggressive power savings by allowing CR users that are not involved in communication to go into doze mode. The proposed ECRQ-MAC protocol allows CR users to identify and use the unused frequency spectrum of licensed band in a way that constrains the level of interference to the primary users. Our scheme improves network throughput significantly, especially when the network is highly congested. The simulation results show that our proposed protocol successfully exploits multiple channels and significantly improves network performance by using the licensed spectrum opportunistically, and protects QoS provisioning over cognitive radio ad hoc networks.
Publication Work Type
ISI Journal
Volume Number
19
Issue Number
4
Magazine \ Newspaper
Radioengineering
Pages
pp. 567-578
more of publication
publications

In cognitive radio (CR) ad hoc networks, spectrum efficiency and energy efficiency are vitally important because spectrum availability is opportunistic in nature and mobile CR nodes usually have…

by S. M. Kamruzzaman, Abdullah Alghamdi, Abdulhameed Alelaiwi, Mohammad Mehedi Hassan
2014
publications

Command, control, communication, computer and intelligence (C4I) systems provide situational awareness, which contributes to the decision making process in complex operational environment. The C4I…

by S. M. Kamruzzaman, Abdullah Alghamdi
2014
publications

Routing is one of the most important issues in multihop ad hoc networks. In the routing for mobile cognitive radio (CR) networks, the constraints on residual energy of each user and the…

by S. M. Kamruzzaman, Eunhee Kim, Dong Geun Jeong, Wha Sook Jeon
2012