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University: Monash University
Name of sponsoring Professor: Dr. Iqbal Gondal
Department: Faculty of IT


Title: Quality Framework for VoIP over WMN

The objective of this research is to develop a framework to ensure voice quality for VoIP over IEEE 802.11 based wireless mesh networks. We focus in the development of analytical models to estimate VoIP call capacity over single and multihop wireless networks for the most popular codecs. We investigate VoIP call capacities under different medium access mechanisms (e.g., DCF and PCF) and different network configuration which will be useful in network design and planning. We devise and investigate new techniques to utilise path aggregation and splitting up collision domain to increase call capacity. The analyses are done with voice quality as the limiting factor to ensure that voice quality does not degrade under high load. The mathematical models are validated through simulations using OPNET modeler software.

Research Team: Md. Atiur Rahman, Dr. Joarder Kamruzzaman, Dr. Iqbal Gondal

Title: Automatic Heterogeneous Wireless Mesh Networks

Mesh networking is a way to route data, voice and instructions between nodes. Wireless Mesh Networking (WMN) is implemented over a Wireless LAN. It provides continuous connection and reconfiguration around blocked paths by "hopping" from node to node until a connection can be established. We rely on several wireless technologies to provide voice and data at home and on the road. New products with wireless capability appear everyday. But there are several limitations in the current work of WMN. Therefore, the objective of this research is to improve the security, scalability and capability of WMN to integrate heterogeneous wireless networks. Experiments related to this research will initially be simulated using OPNET modeler software. Then some experiments will be done in real world environment.

Research Team: Md. Masumuzzaman Bhuiyan, Dr. Iqbal Gondal, Dr. Joarder Kamruzzaman)


Network Architecture

FIT2020 Networks and Data Communications II introduces students to advances in the distributed networked environment. The unit provides knowledge of internetworking protocols, QoS for critical applications, network management and TCP/IP operation. This unit makes use of OPNET labs to understand the concepts of networking.

FIT5191 Network Protocols and Network Security

OPNET is used to conduct labs.


OPNET Technologies, Inc. is a leading provider of solutions for managing networks and applications. OPNET's best-in-class solutions address application troubleshooting, application monitoring, network monitoring, network configuration management, capacity management, and network simulation. OPNET’s solutions have been operationally proven in thousands of customer environments worldwide, including corporate and government enterprises, government and defense agencies, network service providers, and network equipment manufacturers. For more information about OPNET and its products, visit www.opnet.com.