Zuriati Ahmad Zukarnain

Publications

2 Efficient Scheduling Algorithm for QoS Support in High Speed Downlink Packet Access Networks

Authors: Mohamed Othman, Zuriati Ahmad Zukarnain, MohammadReza HeidariNezhad, Nur Izura Udzir

Abstract:

In this paper, we propose APO, a new packet scheduling scheme with Quality of Service (QoS) support for hybrid of real and non-real time services in HSDPA networks. The APO scheduling algorithm is based on the effective channel anticipation model. In contrast to the traditional schemes, the proposed method is implemented based on a cyclic non-work-conserving discipline. Simulation results indicated that proposed scheme has good capability to maximize the channel usage efficiency in compared to another exist scheduling methods. Simulation results demonstrate the effectiveness of the proposed algorithm.

Keywords: quality of service, scheduling algorithm, HSDPA

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1 The New AIMD Congestion Control Algorithm

Authors: Mohamed Othman, Hayder Natiq Jasem, Zuriati Ahmad Zukarnain, Shamala Subramaniam

Abstract:

Congestion control is one of the fundamental issues in computer networks. Without proper congestion control mechanisms there is the possibility of inefficient utilization of resources, ultimately leading to network collapse. Hence congestion control is an effort to adapt the performance of a network to changes in the traffic load without adversely affecting users perceived utilities. AIMD (Additive Increase Multiplicative Decrease) is the best algorithm among the set of liner algorithms because it reflects good efficiency as well as good fairness. Our control model is based on the assumption of the original AIMD algorithm; we show that both efficiency and fairness of AIMD can be improved. We call our approach is New AIMD. We present experimental results with TCP that match the expectation of our theoretical analysis.

Keywords: Efficiency, Congestion Control, TCP, fairness, AIMD

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Abstracts

1 Advanced Simulation and Enhancement for Distributed and Energy Efficient Scheduling for IEEE802.11s Wireless Enhanced Distributed Channel Access Networks

Authors: Zuriati Ahmad Zukarnain, Fisayo G. Ojo, Shamala K. Subramaniam

Abstract:

As technology is advancing and wireless applications are becoming dependable sources, while the physical layer of the applications are been embedded into tiny layer, so the more the problem on energy efficiency and consumption. This paper reviews works done in recent years in wireless applications and distributed computing, we discovered that applications are becoming dependable, and resource allocation sharing with other applications in distributed computing. Applications embedded in distributed system are suffering from power stability and efficiency. In the reviews, we also prove that discrete event simulation has been left behind untouched and not been adapted into distributed system as a simulation technique in scheduling of each event that took place in the development of distributed computing applications. We shed more lights on some researcher proposed techniques and results in our reviews to prove the unsatisfactory results, and to show that more work still have to be done on issues of energy efficiency in wireless applications, and congestion in distributed computing.

Keywords: Distributed Computing, Internet of Things (IoT), wireless sensor network (WSN), wireless mesh network (WMN), energy efficiency (EE), discrete event simulation (DES), quality of service (QOS), user equipment (UE), worldwide interoperability for microwave access x (WiMAX)

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