Nazrul Islam

Work place: Department of Information and Communication Technology, Mawlana Bhashani Science and Technology University, Tangail-1902, Bangladesh



Research Interests: Machine Learning


Nazrul Islam holds a Master of Science degree in Electrical Engineering with an emphasis on Telecommunication Systems from Blekinge Institute of Technology (BTH), Karlskrona, Sweden in January 2014. He also graduated from the Department of Information and Communication Technology (ICT) of Mawlana Bhashani Science and Technology University, Tangail-1902, Bangladesh in June 2008. He secured 2nd position in merit list of the batch.  However, currently, he is working as an Assistant Professor, Department of Information and Communication Technology (ICT) at the Mawlana Bhashani Science and Technology University, Tangail-1902, Bangladesh. He also worked as a Project Assistant for European Project-Quality of Experience Estimators in Networks (QUEEN). His research interests include Communication Networks (QoE), Software Defined Network (SDN), Machine Learning for Optical Sensing.

Author Articles
A Comprehensive Analysis of QoS in Wired and Wireless SDN Based on Mobile IP

By Nazrul Islam Md. Habibur Rahman Mostofa Kamal Nasir

DOI:, Pub. Date: 8 Oct. 2021

Software-Defined Networking (SDN) is the new network paradigm whose primary focus is to create a dynamic, scalable and flexible network. It provides programmable functions for implementation of network configuration management. The demand for wireless network functionality is rising simultaneously. Mobility management for a large network is an issue in Internet Engineering Task Force (IETF). There are also a number of solutions to support mobility within the network. The Mobile Internet Protocol (MIP) is used for managing mobility. Furthermore, for the SDN platform, mobility adds roaming capability for mobile nodes in the software-defined wireless network (SDWN). In the wired scenario, SDN has different capabilities to deliver network services according to the fixed node. This study provides a quality of service (QoS) analysis in both SDN and SDWN. Mininet WiFi and RYU network emulator as a controller is used to implement the mobility API. The random walk model is applied as mobility functionality toward the final nodes. Moreover, several QoS measurement matrices are analyzed according to the network topology. At the end, round trip time (RTT), cumulative distributed function (CDF), packet loss and throughput are analyzed for quality of service comparable in the SDN and SDWN scenarios according to the MIP.

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Analysis of QoS in Software Defined Wireless Network with Spanning Tree Protocol

By Rafid Mustafiz Abu Sayem Mohammad Delowar Hossain Nazrul Islam Mohammad Motiur Rahman

DOI:, Pub. Date: 8 Jun. 2017

Software Defined Network (SDN) is more dynamic, manageable, adaptive and programmable network architecture. This architecture separates the control plane from the forwarding plane that enables the network to become directly programmable. The programmable features of SDN technology has dramatically improved network efficiency and simplify the network configuration and resource management. SDN supports Open-Flow technology as forwarding function and centralized control successfully. Wireless environment has recently added to the SDN infrastructure that has rapidly emerged with Open-Flow protocol. To achieve more deterministic network behaviors, QoS provisioning is a necessary consideration. In this paper, the Spanning Tree Protocol (STP) has applied on a SDWN and then analyzed the Quality of Service (QoS) using Mininet-Wifi. STP protocol is used to suppress the occurrence of broadcast streams and observe the performance of the QoS parameters. Various parameters that determine QoS, such as, bandwidth utilization, packet transmission rate, round trip time, maximum obtained throughput, packet loss ratio, delay time is analyzed for different base stations defined in the SDWN architecture.

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Fuzzy Based Energy Efficient Multiple Cluster Head Selection Routing Protocol for Wireless Sensor Networks

By Sohel Rana Ali Newaz Bahar Nazrul Islam Johirul Islam

DOI:, Pub. Date: 8 Mar. 2015

The Wireless Sensor Network (WSN) is made up with small batteries powered sensor devices with lim-ited energy resources within it. These sensor nodes are used to monitor physical or environmental conditions and to pass their data through the wireless network to the main location. One of the crucial issues in wireless sensor network is to create a more energy efficient system. Clustering is one kind of mechanism in Wireless Sensor Networks to prolong the network lifetime and to reduce network energy consumption. In this paper, we propose a new routing protocol called Fuzzy Based Energy Effi-cient Multiple Cluster Head Selection Routing Protocol (FEMCHRP) for Wireless Sensor Network. The routing process involves the Clustering of nodes and the selection of Cluster Head (CH) nodes of these clusters which sends all the information to the Cluster Head Leader (CHL). After that, the cluster head leaders send aggregated data to the Base Station (BS). The selection of cluster heads and cluster head leaders is performed by using fuzzy logic and the data transmission process is performed by shortest energy path which is selected applying Dijkstra Algorithm. The simulation results of this research are compared with other protocols BCDCP, CELRP and ECHERP to evaluate the performance of the proposed routing protocol. The evaluation concludes that the proposed routing protocol is better in prolonging network lifetime and balancing energy consumption.

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