OPNET Technologies
7255 Woodmont Avenue 
Bethesda, MD 20814
Tel: 240-497-3000
Fax: 240-497-3001
E-mail: university@opnet.com
Web: www.opnet.com

© 2008 OPNET Technologies, Inc.
OPNET and OPNET Technologies Inc.
are registered trademarks of OPNET. 
All trademarks are the property of their
respective owners and are used herein 
for identification purposes only.

Title: GPS-Enhanced AODV routing (Fall 2008 - ongoing)
Ad-Hoc On-demand Distance Vector (AODV) is a stateless reactive routing protocol for mobile ad hoc networks (MANET).  To discover the route to destination AODV relies on flooding technique which may result in unnecessarily large number of control packets traveling through the network and consuming such already scarce network resources as bandwidth, node processing power, and node battery power. This work examines a new simple protocol for limiting the number of AODV control packets forwarded though the network during the route discovery. Our approach, named GeoAODV, takes advantage of the Global Positioning System (GPS) and assumes that each communicating device has GPS access and knows its location. Using GPS coordinates GeoAODV limits the route discovery process to the search region that is likely to contain the path to destination. The route discovery region is dynamically adjusted based on the “freshness” of the destination coordinates and the number of the route discovery attempts. We evaluate performance of GeoAODV through simulation using OPNET Modeler software. We also compare performance of GeoAODV protocol with other work such as Location Aided routing (LAR) and Geographical Routing Protocol (GRP).
 

Title:  Internet Bandwidth  Distribution (2002 - 2008)

• Spring 2013:
• TCP/IP and Internet Technologies
• Fall 2012:
• Data Communications and Computer Networks an introductory course into the field of computer networks, which will include 6-8 laboratory assignments using OPNET software.
• Thesis I: Improving routing efficinecy in MANET. Master's Student:  Remo Cocco
• Fall 2011 - Summer 2012
• Thesis I - III: Improving routing efficinecy in MANET. Master's Student:  Remo Cocco

1. V. Hnatyshin, M. Ahmed, R. Cocco, and D. Urbano, “A Comparative Study of Location Aided Routing Protocols for MANET”,  In Proceedings of 4th IEEE IFIP Wireless Days 2011 conference, October 2011,  Niagara Falls, Ontario, Canada (PDF).
2. Vasil Hnatyshin, “Academic Instruction using OPNET Software”, Session 1020 during International Conference OPNETWORK 2011 in Washington DC, August 2011 (PDF).
3. University of Delaware, SIGNET group seminar, “Improving AODV route discovery through GPS coordinates”, November 3rd, 2010 (PDF)
4. V. Hnatyshin and H. Asenov, "Design and Implementation of an OPNET model for simulating GeoAODV MANET routing protocol",  In Proceedings of OPNETWORK 2010, Session 1558 Customer Presentations: Wireless Ad Hoc and Wireless Personal Area Networks, Washington DC, August 2010 (PDF, DOCX).
5. V. Hnatyshin "Using OPNET software at Rowan University", invited presentation at Academic Instruction using OPNET software session during OPNETWORK 2010 conference, Washington DC, August 2010 (PPTX)
6. V. Hnatyshin, H. Asenov, J. Robinson, "Practical methodology for modeling wireless routing protocols using OPNET Modeler", In Proceedings of 21st  International Conference on Modeling and Simulation (MS 2010), July 15 - 17, 2010,  Banff, Alberta, Canada (PDF, DOC, DOCX).
7. H. Asenov, V. Hnatyshin, and A. Fabian, “OPNET implementation of the GeoAODV routing protocol”, poster presentation at the Consortium for Computing Sciences in Colleges 25th Annual Eastern Conference , Villanova University, Villanova, PA, October, 2009 (Abstract- PDF, Poster - PPTX). 
8. H. Asenov, and V. Hnatyshin, "GPS-Enhanced AODV routing," in Proceedings of the 2009 International Conference on Wireless Networks (ICWN'09), Las Vegas, Nevada, USA (July 13-16, 2009) . (Word 07, PDF)
9. V. Hnatyshin and A. Lobo, "Undergraduate Data communications and Networking Projects Using OPNET and Wireshark Software," Inroads: SIGSCE Bulletin,  Vol. 40, No 1, pp. 241 - 245, March 2008  (MS Word, PDF).
10.  OPNET Online Technology Workshop: Academic Research and Teaching Using OPNET Software: Best Practice Approaches for Leveraging OPNET in the Classroom, September 2007
11. V. Hnatyshin and M. Simmons, "Practical Methodology for Development and Deployment of Standard Applications Process Models using OPNET Modeler," in Proceeding of OPNETWORKS 2007, Session 1558 Case Studies: Advanced Simulation Technology. Washington, DC, August 2007. (MS Word)
12. V. Hnatyshin, G. Gramatges,  and M. Stiefel, "Practical Considerations for Extending Network Layer Models with OPNET Modeler", in Proceedings of  International Conference on Modelling and Simulation 2007, Montreal, Canada, May 2007. (PDF, MS Word)
13. V. Hnatyshin, J. Metting, A. Fabian, M. Stiefel, P. Bashkirtsev, M. Simmons, R. DeDomenico, G. Gramatges, and A. Lobo "Modeling University computer Laboratory using OPNET Software", to appear in proceeding of  the 2006 International Conference on Telecommunication Systems – Modeling and Analysis,  October 5-8, 2006, Reading, PA (MS Word). 
14. V. Hnatyshin and A.S. Sethi,  "Bandwidth Distribution Scheme for Dynamic, Scalable, and Fair Allocation of Bandwidth,"  International Journal of Network Management (Wiley), Volume 16, Issue 5, September/October 2006, pp 317- 336. (PDF, MS Word)
15. V. Hnatyshin, J. Ogren, J. Pucci, and C. Clement, "Influence of the discarding the out-of-profile packets policy on TCP traffic," In Proceedings of the 2005 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'05), Volume 3, pages 1215 -  1221, Las Vegas, NV (June, 2005).  (PDF, Word)
16. V. Hnatyshin and A.S. Sethi,  "Estimation Based Load Distribution in the Internet,"  Computer Networks, Volume 48, Issue 4 , 15 July 2005, Pages 525-547 (PDF, MS Word). 
17. V. Hnatyshin and A.S. Sethi, "Scalable Architecture for Providing Per-flow Bandwidth Guarantees", In Proceedings of Communications, Internet and Information Technology (CIIT 2004) Conference, St. Thomas, U.S. Virgin Isles (November 2004). (MS Word, PDF)
18. V. Hnatyshin and A.S. Sethi, "Optimization of the Bandwidth Distribution Scheme for Handling Topology Changes,'' In Proceedings of IPCCC'04,  IEEE International Performance Computing and Communications Conference, Phoenix, AZ (April 2004). (MS Word, PDF)
19. V. Hnatyshin and A.S. Sethi, "Reducing Load Distribution Overhead with Message Aggregation,'' In Proceedings of IPCCC'03, 23rd IEEE International Performance Computing and Communications Conference, Phoenix, AZ (April 2003).(PDF)
20. V. Hnatyshin and A.S. Sethi, "Fair and Scalable Load Distribution in the Internet,'' In Proceedings of 3rd International Conference on Internet Computing, Las Vegas, NV (June 2002).(PDF)
21. V. Hnatyshin and A.S. Sethi, "Achieving Fair and Predictable Service Differentiation Through Traffic Degradation Policies,'' In Proceedings of  SPIE QoS 2001, Conference on Quality of Service over Next-Generation Data Networks, Denver, CO (Aug. 2001). (PDF, PS)
22. V. Hnatyshin and A.S. Sethi, "Avoiding Congestion Through Dynamic Load Control,'' In Proceedings of ITCom-2001, SPIE's International Symposium on The Convergence of Information Technologies and Communications, Denver, CO (Aug. 2001), pp. 309-323. (PDF, PS)