Sayeed.Ghani

=Dr. Sayeed Ghani= Associate Dean, Faculty of Computer Science (2008 to present) Dr. Sayeed Ghani has a B.S. from MIT and M.S. and Ph.D from Columbia University in Electrical Engineering. His field of expertise is in Wireless and Mobile communications. He is presently Associate Dean of the Faculty of Computer Science at IBA and has also been a member of the Board of Governors of IBA. Dr. Ghani also has over 12 years of industry experience prior to joining IBA in 2001 as Chairman of the Center for Computer Studies. Dr. Ghani has worked as a Member of Technical Staff at NYNEX Science & Technology in the US, where he was heavily involved in the Standards process of high-speed data services and ATM networks. He has been employed as IT Head for ABN AMRO Bank and State Life Insurance Corporation of Pakistan. Dr. Ghani has also been a pioneer in introducing VSAT and Internet services in Pakistan and has been involved in various software development projects throughout his career. He has also worked at GTE Labs and the MIT Laboratory for Computer Science in the US and Lever Brothers in Pakistan. Dr. Ghani has a number of publications in leading IEEE journals and conferences and has presented papers and conducted seminars in various forums in both the US and Pakistan. His current research interests at IBA include Wireless Sensor Networks, simulation and performance analysis of wireless networks and routing issues in Mobile Ad hoc Networks, WiMax and LTE networks. He is presently also supervising four PhD students in this area of research. Links: http://sayeedghani.iba.edu.pk/ http://research.iba.edu.pk/research_details.php?id=sghani


 * ~ Primary Areas of Interest: || Wireless Sensor Networks, LTE, Mobile Ad hoc Networks, Simulation, Performance Analysis of Networks. ||

=Research=

Updated list of Research Publications: []

Presently leading the PhD research at the TRL with three PhD students/faculty members:
 * [|Telecommunications Research Lab (TRL)] :**
 * Faisal Iradat
 * Raza Abedi
 * Waseem Arain

In the following areas: Performance analysis, modeling and simulation of Mobile Ad Hoc Networks (MANETs); Call admission control in integrated wireless 802.11e voice and data networks; Routing issues in MANETs. For conducting simulations, we have primarily used NS2, although we have recently started looking into Qualnet as well. The TRL also has a licensed version of Labview. **A. Ongoing Research with Faisal Iradat:** An Integrated Voice and Data Traffic with Call Admission Control Scheme in IEEE 802.11e EDCA Based Wireless LANs. **Abstract :** Wireless Local Area Networks (WLANs) based on IEEE 802.11 are becoming the most widely used WLAN technology for its easy deployment and lower cost. Due to the lack of Quality of Service (QoS) provisioning for integrated services such as voice and data in 802.11, the IEEE 802.11e was proposed. Despite providing service differentiation through priorities, the IEEE 802.11e still failed to meet the strict QoS support for integrated services. We believe Call Admission Control (CAC) being one of the fundamental mechanisms for QoS provisioning, if applied to IEEE 802.11e can further ensure that users get their agreed QoS with acceptable delays for data. In this report we analyze the data performance in IEEE 802.11e with a simplified version new call bounding based CAC scheme using a decomposition approximation. The Decomposition approximation provides a closed form solution if applied to integrated services such as voice and data, and thus easier to compute. **Past Publications:** **B. Ongoing Research with Rashid Faruqui:** 802.11 commonly known as Wi-Fi is widely deployed around the globe. It is one of the most successful technologies that are implemented. Its success may be regarded due to its cost, ease and flexibility of implementation especially is non licensed ISM band. Additionally, provision of high data rates supportive of today’s high demand multimedia and broadband implementations also made it very popular. User demand to access broadband services while roaming made 802.11 as their ultimate choice. However non provision of Quality of Service (QoS) to meet stringent requirement of real time traffic in legacy 802.11 was one of the major hurdles. This led to the development of 802.11e which meet the requirement of real time traffic. This was made possible by introducing new mechanisms like Transmission Opportunity (TXOP), Block Acknowledgment (BA) and varying sizes of contention windows and interval times. Another mechanism called Head of the Burst or “Protection Mechanism” was also introduced. It is pertinent to mention here that 802.11e is still in the evolving stage, researchers have left no stone unturned to improve the standard. The aim and objectives of this thesis is two fold; one to optimize the new concepts like TXOP and BA, two to improve and enhance the Protection Mechanism. The research would be focused to meet the objectives in varying channel conditions and in contention based service only. It is anticipated that the said research would also facilitate the overall optimization of MAC protocol in 802.11e and other protocols other wireless implementations. Routing protocols in MANET are confronted with the issues of packet delivery and route latency. Both of these are important performance criteria in the performance of such protocols. We have applied a probabilistic analytical model to analyze the successful packet delivery and route latency on two protocols, DSR and M-TORA. DSR has been widely used and studied in simulations whereas M-TORA is a representative protocol with load-balancing capability hence M-TORA has been selected to study the impact of load-balancing on these parameters. In this paper we have analyzed the impact of load balancing in M-TORA and quantified the improvement in packet delivery and route latency. Simulations are suggested in the future to resolve further issues including weather the probability of route failure in M-TORA and DSR are equal. Mobile ad hoc networks are increasingly finding their existence in the marketplace heading to a new paradigm of pervasive computing. However there are many areas open to research in the field. Due to node mobility resulting in an ever-changing network topology, conventional routing methods cannot be applied in MANETS making, this is one of the core areas of research. Researchers are challenged to design protocols that can potentially scale to anything from thousand to tens of thousands of nodes and to reduce the route discovery latency. In this paper a different instantiation of Way Point Routing (WPR) model is proposed, where a route is divided into sub-routes to decrease route-latency in frequently occurring subsequent-route-discoveries and to adapt varying topologies in MANET. Simulations are suggested to be carried out in the future to evaluate the performance of the proposed routing protocol.
 * F. Iradat and **S. Ghani**, [|“Study of Guard-Channel-Based Call Admission Control Schemes for 4G Cellular Networks”], //5th International Workshop on Frontiers of Information Technology//, Islamabad, Pakistan, December 17-18, 2007.
 * F. Iradat and **S. Ghani**, [|“Study of CDMA and TDMA Based Channel Access Techniques for IEEE 802.16 Broadband Wireless Networks”], //2nd International Workshop on Frontiers of Information Technology// **,**Islamabad, Pakistan **,**December 20-21, 2004.
 * HOBm A New Head of Burst Mechanism for 802.11e**
 * Abstract :**
 * Past Publications:**
 * R. Faruqui andS. Ghani, [|“A Simulation Study of Block Acknowledgements and TXOPs under Varying Channel Conditions”], 12th IEEE International Multitopic Conference (IEEE INMIC 2008), Karachi, Pakistan, 23-24 December 2008.
 * C. Ongoing Research with Wasim Arain:**
 * 1. Impact of Load-balancing in M-TORA**
 * Abstract :**
 * 2. An instantiation of Way Point Routing for Mobile Ad Hoc Networks**
 * Abstract:**

=Publications=

1. R. Faruqui and **S. Ghani**, [|“A Simulation Study of Block Acknowledgements and TXOPs under Varying Channel Conditions”], //12th IEEE International Multitopic Conference (IEEE INMIC 2008)// , Karachi, Pakistan, 23-24 December 2008. 2. F. Iradat and **Dr. S. Ghani**, [|“Study of Guard-Channel-Based Call Admission Control Schemes for 4G Cellular Networks”], //5th International Workshop on Frontiers of Information Technology//, Islamabad, Pakistan, December 17-18, 2007. 3. F. Iradat and **Dr. S. Ghani**, [|“Study of CDMA and TDMA Based Channel Access Techniques for IEEE 802.16 Broadband Wireless Networks”], //2nd International Workshop on Frontiers of Information Technology//**,** Islamabad, Pakistan**,** December 20-21, 2004. 4. **Dr. S. Ghani** and M. Schwartz, [|“A Decomposition Approximation for the Performance Evaluation of Non-Preemptive Priority in GSM/GPRS”], //The First International Conference on Broadband Networks (BroadNets 2004)//, San José, California, USA, October 25-29, 2004. 5. **Dr. S. Ghani** and M. Schwartz, [|“A Hierarchical Analysis of Access Multiplexers with Multimedia Traffic”], //The Ninth IEEE Symposium on Computer and Communication (ISCC’2004)//, Alexandria, Egypt, June 29-July 1, 2004. 6. **Dr. S. Ghani**, [|“Use of Approximation Methods in the Analysis of Communication Networks with Heterogeneous Traffic”], //1st International Workshop on Frontiers of Information Technology//, Islamabad, December 23-24, 2003. 7. **Dr. S. Ghani** and E. Tayab, "Integrated Networks - Implementation of VSATs and Radio Modem Network", //Workshop on Computers and Telecommunications Technology//, LUMS, Lahore. 1997 8. **Dr. S. Ghani** and M. Schwartz, [|“A Decomposition Approximation for the Analysis of Voice/Data Integration”], //IEEE Transactions on Communications,// //Vol 42, No. 27//, July 1994. 9. **Dr. S. Ghani**, [|“Comparison of DQDB and FDDI MAC Access Protocols”], //16th Local Computer Networks Conference//, Minneapolis, October 1991. 10. Peter Evans and **Dr.** **Sayeed Ghani** (Editors), //IEEE Standard: Distributed Queue Dual Bus (DQDB) Subnetwork of a Metropolitan Area Network (MAN), 802.6-1990,// 1991. 11. **Dr. S. Ghani**, M. Schwartz and S. Ganguly, “A Comparison of FDDI and 802.6 Standards”, //Fourth IEEE Workshop on Metropolitan Area Networks//, Fort Myers, Florida, November 1990. 12. **Dr. S. Ghani** and M. Schwartz, “A Decomposition Approximation for the Analysis of Voice/Data Integration”, //Proceedings Indo-US Workshop on Systems and Signal Processing//, Bangalore, India, January 1988. 13. P. O’Reilly and **Dr. S. Ghani**, [|“Data Performance in Burst Switching when the voice silence periods have a hyper-exponential distribution”], I//EEE Transactions on Communications//, October 1987. (Also published in ICC 1986.)

=Teaching=

**Some recent courses:** ICT752: Seminar in Modeling and Simulation of Networks ||
 * Fall 2009 || ICT711: Introductory Seminar on Research in Networks
 * Spring 2009 || ICT653 – Recent Advances in Networking ||
 * Fall 2008 || //Research Seminar "ICT750 Information Security Management Issues in Telecom Networks"// ||
 * ^  || //Research Seminar "ICT658 Modeling and Simulation of Networks - II"// ||
 * Spring 2008 || ICT657 – Modeling and Simulation of Networks ||
 * Fall 2007 || ICT652 – Topics in Communication Networks ||
 * Spring 2007 || ICT651 – Computer Communication Networks and Simulation ||
 * Fall 2006 || ICT650 – Wireless and Mobile Networking I ||
 * Spring 2006 || ICT552 - Computer Communication Networks - I ||