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General Information:

University: The University of Newcastle
Name of Sponsoring Professor: Dr. Jamil Yusuf Khan
Name of School: School of Electrical Engineering and Computer Science

 

Research Information:

Title: A Cognitive Cooperative Network (CCN) Architecture for Seamless Communication
This research aims at developing an optimized wireless network architecture for using cognitive and cooperative techniques. The technique will be applied to heterogeneous wireless network architecture where networks of different standard will coexist and can cooperative to offer broadband connectivity. In this architecture all network elements and mobile terminals will be designed based on the cognitive principle where each of these entities can obtain system information to reconfigure them to maximize the capacity and QoS of a system. This project will simulate a heterogeneous network architecture consist of different versions of IEEE802.11 standard and IEEE802.16 WiMAX standard elements. The project has developed a number of algorithms which allows users to always connect to best available network and receive highest QoS for multimedia communication. A number of OPNET models have been developed to analyze performance of the Cognitive Cooperative Network architecture. Initial simulation results show that the proposed CCN architecture offer higher capacity and QoS.
Title: A Group Based Multicasting Algorithm for a HSDPA Network
This research is developing an efficient multicasting algorithm for HSDPA (High Speed Downlink Packet Access) network. The project developed a group based algorithm using the variable rate H.264 video coder. The video coder uses a number of coded video streams based on the quality requirements which are transmitted to different group of multicast users. Multicast users groups are formed based on users CQI (Channel Quality Indicator) feedback. In a cell using the group based algorithm two or three multicast user groups are formed and each group receives their multimedia contents based of the supported link quality. The Node-B transmits different video coded stream based on their available link data rate.  An OPNET based simulation model has been developed to study the group based algorithm. Simulation results show that the group based algorithm can offer better QoS in a HSDPA network for multicasting services.
Title: Adaptive Radio Access Network Design for the HSDPA Air Interface
This research studied the interaction between the Iub air interface and the air interface parameters in a HSDPA network. This study analyzed the RNC to UE link efficiencies for multimedia traffic. The RNC (Radio Network Controller) and the Node-B is connected by the Iub link which could be designed based on either the ATM or the IP protocol. The research examines the effect of both ATM and IP based Iub interface on the HSDPA air interface transmission efficiency. Part of the simulation model was developed using the OPNET simulation package.

Title: Adaptive ARQ Techniques for the IEEE802.11 WLAN
This research evaluated the performance of various ARQ (Automatic Repeat reQuest) for the IEEE802.11 WLAN standard. The research work examined the no-ACK, ACK and Block ACK ARQ techniques and optimized their performance for multimedia traffic. The research work also developed an adaptive ARQ technique for the IEEE802.11 standard for multimedia communication. The research work used the OPNET simulator to develop all the simulation models. The simulation model also implemented the packet bursting mechanisms and the priority mechanisms which have been proposed to enhance the performance of the WLAN for multimedia communication.

 

Teaching Information:

ELEC3500 - Telecommunications Networks
OPNET package is used to support the laboratory of the telecommunications networks course. This course is offered to undergraduate students of Telecommunications Engineering, Computer Engineering, Electrical Engineering, Photonics and other engineering students. The OPNET package is used to study basic networking techniques such as statistical multiplexing techniques, queuing techniques, local area networking techniques, etc. Students use OPNET simulation models to study various aspects of above techniques.

ELEC4840 - Final Year Project
In this course undergraduate students undertake their research work. Some of the undergraduate students use the OPNET simulation package to develop their simulation models to study various engineering system. Some of the recent study involving the package includes performance analysis of Body Area Networks, performance analysis of Zigbee network, performance analysis of WiMAX and WLAN networks.

Authored Papers:

Please list the title and the author of each paper that references OPNET

 

Partial List of Recently Published Papers:

  1. J. Wall and J. Y. Khan, “An Adaptive ARQ Enhancement to support Multimedia Traffic using 802.11 Wireless LANs”, Proceedings of the IEEE Globecom 2004, Nov 29- Dec 3, 2004, Dallas Texas, USA.
  2. D. Hall and J. Y. Khan, “ Prioritisation in Recycling Multicast Cell Switches”, Proc. of the Australian Telecommunication Networks and Applications Conference 2004, 7-10 December 2004, Sydney, Australia.
  3. G. Platt and J. Y. Khan, “Service Multiplexing Over the TDMA Air Interface Using the FLO Concept”, Proceedings of the IEEE 16th Annual Int. Symposium of PIMRC, 10-14 September 2005, Berlin , Germany.
  4. G. Platt and J. Y. Khan, “An Enhanced MAC Packet Scheduler for Next Generation Wireless IP Networks”, Proceedings of the First International Conference on Next-Generation Wireless Systems 2006, 2 – 4 January 2006, Dhaka, Bangladesh.
  5. P. Das and J. Y. Khan, QoS Aware Resource Management for a WCDMA Uplink, IEEE Transactions on Vehicular Technology, vol:55, no:5, September 2006, pp. 1565-1581.
  6. J. Wall and J. Y. Khan, Adaptive Multimedia Packet Transmission for Broadband IEEE802.11 Wireless LANs, Proc. Of the IEEE 17th Annual Int. Symposium of PIMRC, 10-14 September 2006, Helsinki , Finland.
  7. X. Yan, J. Y. Khan and B. Jones, Performance Evaluation of the UTRAN Transport Network for the High Speed Downlink Packet Access, Proc. of the Australian Telecommunications and Networks Conference, 4-6 December, 2006, Melbourne, Australia.
  8. J. Wall and J. Khan, Towards Optimal Multimedia Packet Bursting for IEEE 802.11 Wireless LANs, Proc. of the 2007 IEEE Wireless Communications and Networking Conference(WCNC), 11-15 March, 2007, Hong Kong.
  9. X. Yan, J. Y. Khan and B. Jones, An Adaptive Resource Management Technique for a HSDPA Network, Proc. of the IFIP International Conference on Wireless and Optical Communications Networks (WOCN), 2-4 July 2007, Singapore.
  10. E. H. Ong and J. Y.Khan, Dynamic Access Network Selection with QoS Parameters Estimation: A Step Closer to ABC, IEEE Vehicular Technology Conference 2008, 11-14 May 2008, pp. 2671-2676, Singapore.
  11. A. Chaudhry and J. Y. Khan, A Group Based Point-To-Multipoint MBMS Algorithm over the HSDPA Network, 19th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), Efficieny Workshop, 15-18 September 2008, Cannes, France.
  12. J. Y. Khan and M. R. Yuce, Performance Evaluation of a Wireless Body Area Sensor Network for Remote Patient Monitoring, 30th Annual International IEEE EMBS Conference, August 20-24, 2008, Vancouver, British Columbia, Canada.

 

OPNET Technologies Information:

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, network planning, 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.