Research

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Books/Book Chapter

  • R. Naseer, Ismat Aref, Ashraf Mahmoud, “Routing Security in Wireless Sensor Networks,” book chapter in Handbook of Research on Wireless Security – Volume II (TK5102.85.H35 2008), Information Science Reference, Hershey, New York, 2008.

Patents

  • Xiao-Dong Li, Patrick Lie Chin Cheong, Ashraf S. Mahmoud, Mazda Salmanian, “Apparatus and Method for Supporting Differentiated Packet Data Services Within a Wireless Network,” United States Patent 7,092,727 - August 15, 2006.

  •  Ashraf Hasan Mahmoud, Robin M. Hudson, Uthman Baroudi, Ian R. Gillespie, “Method of Radio Resource Management for Integrated Voice and Data CDMA Networks,” United States Patent 7,193,992 - March 20, 2007.

  •  Ashraf Mahmoud, Osama Kubbar, Miroslav Budic, “System And Method For Maximizing Throughput in a Telecommunications System,” United States Patent 7,301,904 – November 2007.

  • Ashraf Mahmoud, “GPS Assisted e-Tourism Promoter System United States Patent Application 20080162037, July 2008.

  • Marwan Abu Amara, Ashraf Mahmoud, “Intelligent Non-Intrusive Control of Mobile Volume/Ringer,” United States Patent Application 20080113657, May 2008..

  •  Ashraf Mahmoud, “A Novel and Efficient Method For Calculating The Power Sum Of Lognormal Random Variables,” Patent Application – June 2008.

Journal Publications

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Conference Publications

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  • A. Mahmoud, Wm.J. Garland, and W.F.S. Poelman, “Multitasking Strategies in Support of a Knowledge Based Operator Companion,” Proceedings of the A.I.ENG’92, Waterloo, Canada, 1992.

  • A. Mahmoud, D.D. Falconer, and S.A. Mahmoud, “A Multiple Access Scheme for Wireless Access to a Broadband ATM LAN Based on Polling and Sectored Antennas,” The 1995 Sixth IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC‘95), Vol. 3, pp. 1047-1051.

  • A. Mahmoud, D.D. Falconer, and S.A. Mahmoud, “Cellular Architecture for Wireless Indoor Broadband Communications Systems in the mm-band”, Presentation, 1995 Research Conference for the Canadian Institute for Telecommunication Research (CITR), Ottawa, Canada.

  •  A. Mahmoud, D.D. Falconer, and S.A. Mahmoud, “A Multiple Access Scheme for Wireless Access to a Broadband ATM LAN Based on Polling and Sectored Antennas,” Presentation, 1995 Research Conference for the Canadian Institute for Telecommunication Research (CITR), Ottawa, Canada.

  •  A. Mahmoud, D.D. Falconer, and S.A. Mahmoud, “Analysis of a Multiple Access Scheme for a Wireless Broadband ATM LAN” Presentation, 1996 Research Conference for the Canadian Institute for Telecommunication Research (CITR), Montebello, QC, Canada.

  • A. Mahmoud, D.D. Falconer, S.A. Mahmoud, “Analysis of a Multiple Access Scheme for Broadband Indoor Wireless ATM LAN,” IEEE GLOBECOM’97 Conference, Phoenix, Arizona USA, 1997.

  • A. Mahmoud, D.D. Falconer, S.A. Mahmoud, “Buffer Occupancy Analysis for a Broadband Polling-Based WLAN,” Network Control and Engineering for QoS, Security and Mobility (NetCon 2003), , October 13-15, Muscat, Oman, pp. 203-212, 2003.

  • M. A. Razzaque, A. Mahmoud, “Online Scheduling Algorithms for CDMA Data Networks,” International Conference on Information & Computer Science (ICICS’2004), Nov 29 – Dec 1, Dhahran, Saudi Arabia, pp. 255-265, 2004.

  • A. Mahmoud, M. Abu Amara, “Performance Of Inter-Base Station Soft Handoff For 3G Networks,” First International Conference On Modeling Simulation And Applied Optimization (ICMSAO’05), Feb 1-3, Sharjah, UAE, 2005.

  • A. Mahmoud, “Non-Blocking FCFS Scheduler For Data Services Over CDMA Networks,” First International Conference On Modeling Simulation And Applied Optimization (ICMSAO’05), Feb 1-3, Sharjah, UAE, 2005.

  • A. Mahmoud, M. A. Razzaque, “Earliest-Deadline Scheduling Using Discrete Service Bit Rates for CDMA Data Networks,” International Symposium on Wireless Systems and Networks (ISWSN ’05), November, Dhahran, Saudi Arabia, pp. 124-128, 2005.

  • S. Al-Gahtani, A. Mahmoud, “Uplink Admission Control in WCDMA,” International Symposium on Wireless Systems and Networks (ISWSN ’05), November, Dhahran, Saudi Arabia, pp. 18-23, 2005.

  • S. Al-Gahtani, Ashraf Mahmoud, “A Prioritized Uplink Call Admission Control Algorithm for 3G WCDMA Cellular Systems with Multi-Services,” Proceedings of 6th IEE International Conference on 3G & Beyond (3G 2005), London, UK, 5-7 November, pp. 173-178, 2005.

  • M. G. Kaosar, H. M. Asif, T R. Sheltami, A. Mahmoud, “Simulation-Based Comparative Study of On Demand Routing Protocols for MANET,” International Conference on Wireless Networking and Mobile Computing (ICWNMC'05 ). 28-30 December, Chennai, India. Vol. 1, pp. 201–206, 2005.

  • S. Al-Qahtani, A. Mahmoud, “Analytical Modeling of Call Admission Control Schemes for Multiclass Traffic Mobile Wireless Networks,” 3rd IEEE Gulf International Conference (IEEE- GCC 2006), March 19-22, Manama, Bahrain, 2006.

  • S. Al-Qahtani, A. Mahmoud, “A QoS-Aware Call Admission Control Algorithm for 3G Cellular Wireless Networks,” 3rd IEEE Gulf International Conference (IEEE- GCC 2006), March 19-22, Manama, Bahrain, 2006.

  • S. Al-Qahtani, A. Mahmoud, “Radio Resource Management Issues for 3G and Beyond Cellular Wireless Networks,” 3rd IEEE Gulf International Conference (IEEE- GCC 2006), March 19-22, 2006, Manama, Bahrain.

  • A. Mahmoud, T. Sheltami, M. Abu Amara, “Wireless Sensor Network Implementation for Mobile Patient,” 3rd IEEE Gulf International Conference (IEEE- GCC 2006), March 19-22, Manama, Bahrain, 2006.

  • A. Mahmoud, T. Sheltami, M. Abu Amara, E. Rahman, J. Jaffar, “WLAN Integration For Future Generation Mobile Network Operators – A Case Study,” Proceedings of 18th National Computer Conference (NCC 18), March 26-29, Riyadh - Saudi Arabia, pp. 47-54, 2006.

  • T. Sheltami, A. Mahmoud, M. Abu Amara, “Warning and Monitoring System using Sensor Networks,” Proceedings of 18th National Computer Conference (NCC 18), March 26-29, Riyadh - Saudi Arabia, pp. 63-68, 2006.

  • M.G. Kaosar, A. Mahmoud, T. Sheltami, “Performance Improvement of Dynamic Source Routing Protocol Considering the Mobility Effect of Nodes in Cache Management,” 3rd IEEE and IFIP International Conference on Wireless and Optical Communications Networks (WOCN 2006), Bangalore , India, April 11-13, 2006.

  • S. Al-Qahtani, A. Mahmoud, U. Baroudi, A. Sheikh, “A Study on Network Sharing and Radio Resource Management in 3G and Beyond Mobiles Wireless Networks Supporting Heterogeneous Traffic,” 2nd IEEE International Conference On Information & Communication Technologies, April 24-28, Damascus, Syria, 2006.

  • S. Al-Qahtani, A. Mahmoud, “Uplink Call Admission Schemes for 3G and Beyond Mobiles Wireless Networks Supporting Heterogeneous,” 2nd IEEE International Conference on Information & Communication Technologies, April 24-28, Damascus, Syria, 2006.

  •  A. Al-Akeel, A. Mahmoud, “On Optimizing Backoff Procedure to Enhance Throughput and Fairness For Wireless LANs,” 2nd IEEE International Conference on Information & Communication Technologies, April 24-28, Damascus, Syria, 2006.

  • U. Baroudi, Y. Mohammed, A. Mahmoud, “Adaptive QoS-Based Scheduler for 4G CDMA Wireless Networks,” 2nd IEEE International Conference on Information & Communication Technologies, April 24-28, Damascus, Syria, 2006.

  • T. Sheltami, A. Mahmoud, “The Mobile Patient: A Case Study Implementation and Analysis,” Proceedings of the 23rd Biennial Symposium on Communications, Queens University, Kingston, Ontario, Canada, May 29 - June 1, pp. 308-311, 2006.

  • Salman A. Al-Qahtani, Ashraf S. Mahmoud, “Analytical Modeling of Two Call Admission Control Schemes for Multiclass Traffic 3G Mobile Wireless Networks “ ,  15th IST Mobile & Wireless Communications Summit 2006 , Myconos, Greece, 4-8 June, 2006.

  • S. Mahmoud, A. Mahmoud, “Arabic Character Recognition using Modified Fourier Spectrum (MFS),” proceedings of the International Conference on Geometric Modeling & Imaging, GMAI2006, London, United Kingdom, 5-7 July 2006, pp. 155-159.

  • U. Baroudi, Y. Mohammed, A. Mahmoud, “On the Performance of Slotted CDMA Networks,” The 64th IEEE Vehicular Technology (VTC), Montreal, Canada, pp. 2549-2553, 2006.

  • Salman A. Al-Qahtani, Ashraf S. Mahmoud, “Radio Resource Management with Dynamic Behaviour for 3G and Beyond Wireless Networks with Heterogeneous Traffic”, 14th IEEE International Conference on Networks (ICON2006), Sept 13-15, Singapore, Vol. 1, pp. 249-253, 2006.

  • S. Al-Qahtani, A. Mahmoud, Tarek R. Sheltami, and Mohamed El-Tarhuni, "Adaptive Radio Resource Management for Multi-Operator WCDMA Based Cellular Wireless Networks with Heterogeneous Traffic" The 17th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'06), 11-14 Sept 2006, Helsinki, Finland.

  • Salman A. AlQahtani, Ashraf S. Mahmoud, and Asrar U. Sheikh, “Performance Evaluation Of Uplink CAC For 3G WCDMA Wireless Networks With Multiservices,” Proceedings of the 10th IEEE Conference on Communications Systems (ICCS06), 30th Oct.-1 Nov, Singapore, 2006.

  • Salman A. AlQahtani and Ashraf  S. Mahmoud ,”3G WCDMA network sharing: Infrastructural sharing solutions, economical rational and network managements Issues,” Proceedings of The 2nd International Conference on Modeling, Simulation, and Applied Optimization (ICMSAP07), March 24–27, Abu Dhabi, UAE, 2007.

  • Salman A. AlQahtani, Ashraf S. Mahmoud, and Asrar U. Sheikh,” Simulation Based Study of Adaptive Rate Scheduling for Multi-Operator 3G Mobile Wireless Networks,” Proceedings of IEEE 65th 2007 Spring Vehicular Technology Conference (VTC), 23-25 April, Dublin, Ireland, pp. 1209-1213, 2007.

  • Basela S. Hasan, Mohammed S. Khamis, and Ashraf S. Mahmoud, “A Heuristic Genetic Algorithm for the Single Source Shortest Path Problem,” to appear in the proceedings of the ACS/IEEE International Conference on Computer Systems and Applications, AICCSA ‘2007, May 13-16, Amman, Jordan, pp. 187-194, 2007.

  • Salman A. AlQahtani and Ashraf S. Mahmoud, “Performance Evaluation and Analytical Modeling of a Novel Dynamic Call Admission Control Scheme for 3G WCDMA,” to appear in the proceedings of the ACS/IEEE International Conference on Computer Systems and Applications, AICCSA ‘2007, May 13-16, Amman, Jordan, pp. 631-638, 2007.

  • Ahed Shanyour, Ashraf S. Mahmoud, Tarek Sheltami, Salman A. AlQahtani, “Packet Reservation Multiple Access (PRMA) with Random Contention,” to appear in the proceedings of the ACS/IEEE International Conference on Computer Systems and Applications, AICCSA ‘2007, May 13-16, Amman, Jordan, pp. 158-164, 2007.

  • Salman A. AlQahtani, Ashraf  S. Mahmoud, and Asrar U. Sheikh, “Performance Analysis of an Adaptive Rate Scheduling for 3G WCDMA Networks with Multi-Operators,” Proceedings of The IEEE International Conference on Communications (ICC 2007), 24-28 June, Glasgow, UK, pp. 4811–4816, 2007.

  • Mohammed Kaosar, Tarek Sheltami, and Ashraf S. Mahmoud, “Delay and Power Efficient Voice Transmission over MANET,” Proceedings of The IEEE International Conference on Communications (ICC 2007), 24-28 June, Glasgow, UK, pp. 3313–3318, 2007.

  • Ashraf S. Mahmoud, Adel Akeel, and Uthman Baroudi, “An Improved MAC Algorithm for Enhanced Performance for Saturation and Non-Saturation Conditions in IEEE 802.11 WLANs,” Proceedings of the IEEE Symposium on Computers and Communications (ISCC’07), July 1-4, Aveiro, Portugal, pp. 551-556, 2007.

  •  Ashraf S. Mahmoud, “Downlink Traffic Power Characterization for Multi-Rate Wireless CDMA Data Networks,” To appear in proceedings of the IEEE 66th 2007 Fall Vehicular Technology Conference (VTC), 1-3 October 2007, Baltimore, Maryland, USA, pp. 1539-1542, 2007.

  • Marwan Abu-Amara, Ashraf Mahmoud, Tarek Sheltami, Adel Al-Shahrani, Khalid Al- Otaibi, S.M.Rehman, and Taha Anwar, “Performance of UMTS/WLAN Integration at Hot-Spot Locations Using OPNET,” 4th IEEE GCC, 11-14 November, Bahrain, 2007.

    • The paper is derived from a course project project done under the supervision of Dr. Marwan Abu Amara and Dr. Ashraf Mahmoud for the CSE 550 Network Design Course. The project material including the OPNET code is found here.

    • An OPNET contributed model (no 539) for Dual UMTS/WLAN terminal - best with OPNET 9.1a. This model is by others; refer to the documentation and comments within.

  • Ashraf S. Mahmoud, Syed Asadullah, Marwan Abu-Amara, “UMTS-WLAN Integration: Performance Analysis of Mobility Protocols During Handoff,” 4th IEEE GCC, 11-14 November, Bahrain, 2007.

  •  Ashraf S. Mahmoud, Mohammed Aabed, “Approximation Techniques for Analytical Characterization Of Downlink Traffic Power For Multi-Service CDMA Networks,” 15th IEEE International Conference on Networks (ICON2007), 19-21 November, Adelaide, South Australia, pp. 342-347, 2007.

  • Ashraf S. Mahmoud, “Transmission Rate Assignment for Downlink For Multi-Rate Wireless CDMA Data Networks,” The 2007 IEEE International Conference on Signal Processing and Communications (ICSPC07), 24-27 November, Dubai, United Arab Emirates, 2007.

  • Abdul-Aziz Al-Helali, Ashraf Mahmoud, Talal Al-Kharobi, Tarek Sheltami, “A Novel Dual-Mode User Equipment Design And Enhanced Gateway Selection Algorithm For B3G Networks,” the 37th International Conference on Parallel Processing (ICPP-08), Portland, Oregon, USA, September 8-12, 2008, pp. 162-166.

  •  Abdul-Aziz Al-Helali, Ashraf Mahmoud, Talal Al-Kharobi, Tarek Sheltami, “Permanence Evaluation and Analysis of Enhanced Gateway Selection Algorithm For B3G Networks,” The 3rd International Conference on Modeling, Simulation, and Applied Optimization (ICMSAO'09), January 20-22 2009, Sharjah, United Arab Emirates.

Funded Projects

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Presentations

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