Friday 29th of March 2024
 

Improve Downlink Burst Allocation to Achieve High Frame Utilization of Mobile WiMAX (802.16e)


Zaid Ghanim Ali, R. Badlishah Bin Ahmad, Abid Yahya, Layth Abdulkareem Hassnawi and Zeyad Tariq Ibrahim

The burst allocation algorithm is responsible about calculating the appropriate dimensions and location of each users data to construct the bursts in the downlink subframe in term of the number of slots for each user. Burst allocation is one of the performance parameter which influences the mobile WiMAX systems, due to resource wastage in the form of unused and unallocated slots per frame which affects the Base station performance. In this paper, a Sequential Burst Allocation (SBA) algorithm is proposed to overcome frame wastage. The SBA algorithm is based on the idea of sequential allocation of user slots. SBA limits the excessive unused slots, and burst fragmentation when necessary is forced to be used to eliminate unallocated slots between data bursts. Continuous allocation from one frame to the next has a significant impact on reducing resource wastage. It has been observed from the results that the percentage difference of the frame utilization between SBA and ST algorithms is 32.84 %, which achieve significant reduction of resource wastage per frame, leading to more exploit of the WiMAX frame.

Keywords: Burst allocation, downlink subframe, overhead, Mobile WiMAX.

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ABOUT THE AUTHORS

Zaid Ghanim Ali
Received his BS degree in electrical and electronic engineering from Military Engineering College, Baghdad, Iraq in 1988, the M.Sc. degree in computer engineering from University of Technology, Baghdad, Iraq in 2004. He worked as senior engineer in governmental research and development center institute until 2003, part time Lecturer at the University of Dejlah, Iraq. Faculty member at the University of Al-Manssour, Iraq, until, 2011, He is currently enrolled in doctoral program in School of Computer and Communication Engineering University Malaysia Perlis, Malaysia. Research interests focus on WiMAX resource allocation, network communication, packet scheduling and algorithms.

R. Badlishah Bin Ahmad
He obtained B. Eng. in Electrical & Electronic Engineering from Glasgow University in 1994. He obtained his M.Sc. and PhD in 1995 and 2000 respectively from University of Strathclyde, UK. His research interests are on computer and telecommunication network modeling using discrete event simulators, optical networking & coding and embedded system based on GNU/Linux for vision. He has five (5) years teaching experience in University Sains Malaysia. Since 2004 until now he is working with university Malaysia Perlis (UniMAP). Currently as the Dean at the School of Computer and Communication Engineering and Head of Embedded Computing Research Cluster.

Abid Yahya
He earned his B.Sc. degree from University of Engineering and Technology, Peshawar, Pakistan in Electrical and Electronic Engineering majoring in telecommunication. Dr. Abid Yahya began his career on a path that is rare among other Researcher executives and earned his M.Sc. and Ph.D. degree in Wireless & Mobile systems, in 2007 and 2010 respectively, from the university Sains Malaysia, Malaysia. Currently he is working at School of Computer and Communication Engineering, university Malaysia Perlis (UniMAP). His professional career outside of academia includes writing for the International Magazines, News Papers as well as a considerable career in freelance journalism. He has applied this combination of practical and academic experience to a variety of consultancies for major corporations.

Layth Abdulkareem Hassnawi
Born in Iraq. He received the B.Sc. degree in Electrical and Computer Engineering from Military Engineering College, Iraq, in 1993; and the M.Sc. degree in Computer Engineering from University of Technology, Iraq, in 2002. He worked as a lecturer in Al Manssour University in IRAQ until 2005, and then he worked as a researcher in the Ministry of Science and Technology (MOST), Iraq until 2009. His researches interest in the area of networks design and Routing in wireless networks. He has an experience in networking, communication, and information technology (IT).

Zeyad Tariq Ibrahim
Bborn in Iraq. He received the B.Sc. degree in Electrical and Electronic Engineering from Military Engineering College, Iraq, in 1990; and the M.Sc. degree in Electrical Engineering from University of Technology, Iraq, in 2000. He worked as part time lecturer in Dijla University in IRAQ until 2011, as well as he is a researcher in the Ministry of Science and Technology (MOST), Iraq until 2011. His researches interest in the area of communication, digital signal processing computer network design. He has an experience in wireless networks.


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