Ahmed Helmy's home page

Ahmed Helmy
Associate Professor of Computer Networks
Computer and Information Science and Engineering (CISE) Department
Founder and Director: Mobile and Sensor Networks Laboratory (the NOMADS group)
University of Florida, Gainesville
email: helmy at ufl.edu

Aug. 2006: I have moved my group and lab to the University of Florida. Click on the link below for updated news.
My main website has moved to http://www.cise.ufl.edu/~helmy

[NOTE: This web page is out-of-date! Please point to the following link at the University of Florida for updated information http://www.cise.ufl.edu/~helmy].

Please update any pointers you have to my new website ... www.cise.ufl.edu/~helmy ... redirecting in 20 seconds ...

Dr. Ahmed Helmy is conducting research on design and analysis of mobile ad hoc networks and wireless sensor networks, in addition to protocol testing techniques. He currently has three active NSF projects (MARS, ACQUIRE and STRESS). In 2002, Dr. Helmy received the National Science Foundation (NSF) CAREER Award for his research on 'Resource Discovery, Query Resolution, Rendezvous and Mobility Modeling in Large-Scale Wireless Ad Hoc and Sensor Networks' (also called MARS). His current research interests lie in the areas of modeling and analysis of mobile wireless networks, robust protocol design for ad hoc and sensor networks (geographic routing and efficient query resolution), network security and systematic design and stress testing of networking protocols.

Dr. Helmy is currently leading the MARS projects (funded by NSF, Intel and Pratt&Whitney) on efficient architectures and protocols for large-scale ad hoc and sensor networks. He developed the IMPORTANT mobility simulation tool with his group under the MARS project. He is also co-leading the NSF funded project ACQUIRE for 'Data-centric Active Querying in Sensor Networks'. Furthermore, he is leading the NSF/NASA funded project for highly dependable protocols ( STRESS). From 1998-2002 STRESS was funded by DARPA to develop scenario generation algorithms for multicast protocols. He has also led the M&M project (funded by Nortel and Intel) to develop a multicast-based mobility protocol for efficient IP mobility support. He has worked on the VINT (NS-2) and PIM projects at USC and USC/ISI. In addition, he received the Zumberge award (2000) to pursue work on power-aware wireless routing protocols. He also founded and is currently directing the Electrical Engineering laboratory for wireless networking, as part of a grant he received from HP.

Most recently, Dr. Helmy is studying wireless user behavior through trace-based analyses. He is also initiating an effort to form a community-wide mobility library of Wireless LAN measurements (MobiLib).

Projects & Publications
[News updated Feb '06]

CV (pdf) Sept '06, Full CV , Bio
(Credentials, Statements, Teaching, ... )

Teaching
(Courses, Statistics)

Committees
(Conferences, Journals, ... )

Projects and Selected Publications [click here for a more detailed website (somewhat out-of-date)]

Selected Key Publications: These publications represent the major research thrusts in my group.

Projects: MARS, ACQUIRE, M&M, STRESS, AQM-marking, VINT/NS, PIM

[NOTE: The main PI or co-PI on the above projects (Prof. A. Helmy) has moved to the University of Florida (UF) to the Computer and Information Science and Engineering (CISE) Department, and moved all active projects, students and activities related thereto under his supervision to UF. His new website can be accessed through this link.]

MARS PROJECT: Resource Discovery, Query Resolution, Rendezvous and Mobility Modeling in Large-Scale Wireless Ad Hoc and Sensor Networks (MARMALADeS projects): [A related project on active querying in sensor networks, 'ACQUIRE', has started with funding from NSF NETS]

MARS Selected Publications: (For more complete list of publications please check the updated CV)

Mobility Modeling and Analysis: The IMPORTANT mobility tool (includes Freeway, Manhattan, Group and RandomWaypoint mobility models).
- The PATHS mobility analysis: F. Bai, N. Sadagopan, B. Krishnamachari, A. Helmy, "Modeling Path Duration Distributions in MANETs and their Impact on Routing Performance", IEEE Journal on Selected Areas of Communications (JSAC), Vol. 22, No. 7, pp. 1357-1373, September 2004. [ Earlier version appeared in ACM MobiHoc, June 2003 (Acceptance rate: 15%)] (MobiHoc Presentation (.ppt))
  Summary: This study investigates fundamental characteristics of mobile networks connectivity. It shows that, contrary to common assumptions, that the 'link' durations in mobile networks are 'not' exponentially distributed. It further establishes, for the first time, that the shortest 'path' duration is indeed 'exponentially distributed' for random and correlated mobility models. These results are used to establish first order models for throughput and overhead in ad hoc networks using path duration statistics.
- F. Bai, N. Sadagopan, A. Helmy, "The IMPORTANT Framework for Analyzing the Impact of Mobility on Performance of Routing for Ad Hoc Networks", AdHoc Networks Journal - Elsevier, Vol. 1, Issue 4, pp. 383-403, November 2003.
  [Earlier version appeared at IEEE INFOCOM , April 2003, San Francisco (Acceptance rate: 20%)] ( INFOCOM presentation slides (.ppt))
  Summary: This study introduces the IMPORTANT framework for systematic modeling and characterization of mobility by presenting the concept of mobility dimensions and metrics. Mobility dimensions include spatial correlation, temporal correlation and obstacles. A 'rich' set of mobility models (Manhattan, Freeway, Group and Random mobility) are identified to span these dimensions. The study challenges the common practice of using random mobility in wireless networking research, and clearly establishes the need for more realistic mobility models. This is achieved by showing the drastic difference between ad hoc routing performance over realistic mobility and that over random mobility. Using a building-block analysis, the study also answers questions of how and why mobility modeling is important.
- Trace-based Mobility (MobiLib: The Mobility Trace Library):
  - * New * W. Hsu, A. Helmy, "IMPACT: Investigation of Mobile-user Patterns Across University Campuses using WLAN Trace Analysis", USC Technical Report, July 2005. [Submitted for review] [Longer version, IMPACT webpage]
    Summary: This paper provides the most comprehensive study of WLAN traces to date. Traces collected from four major universities (~12,000 users) are analyzed using metrics for individual user and group behaviors. Similarities and differences across campuses are studied. Conclusions provide great insight into realistic behavior of wireless users. Most users are 'on' for a small fraction of the time, number of access points visited (per user) is quite low, and on-line user mobility is quite low. On average, a user encounters only 2%-6% of the user population. Encounter-graphs and small worlds are introduced to model encounter patterns between users. We find that number of encounters follows a biPareto distribution and the frienship indexes follow exponential distributions. A paradigm for 'encounter-based information diffusion' is introduced for efficient data dissemination in mobile networks.
  - * New * W. Hsu, A. Helmy, "Analyzing Principal Characteristics of User Association Patterns and Eigen-behavior in Wireless LAN Traces", November 2005. [Submitted for review]
  - W. Hsu, K. Merchant, H. Shu, C. Hsu, A. Helmy, "Weighted Waypoint Mobility Model and its Impact on Ad Hoc Networks", ACM Mobile Computer Communications Review (MC2R) (among the best MobiCom '04 posters), Jan 2005.
- * New * F. Bai, A. Helmy, "Impact of Mobility on Mobility-Assisted Information Diffusion (MAID) Protocols", USC Technical Rreport, July 2005. [Submitted for review] [Longer, more complete, 29-page version]
  Summary: This study analyzes a class of protocols, MAID, that utilize mobility for information diffusion. MAID uses encounter information to create age gradients towards the target, and can be used for discovering resources, routing or locating nodes efficiently in future mobile networks. Analytical models are developed to evaluate MAID's performance during its various (transient and steady-state) phases of operation. Extensive simulations are used to validate these models and to study the sensitivity of MAID to a rich set of mobility models. We find that although MAID is sensitive to the mobility pattern, its steady state performance is, surprisingly, insensitive to velocity. We identify the properties of the 'age gradient tree' as the key factor to explain this interplay between mobility and the MAID protocols.
Robust Geographic Protocols and Services:
- Optimal Geographic Routing: K. Seada, M. Zuniga, A. Helmy, B. Krishnamachari, "Energy-Efficient Forwarding Strategies for Geographic Routing in Lossy Wireless Sensor Networks", 2nd ACM Conference on Embedded Networked Sensor Systems (SenSys), Nov 2004 (14.5% Acceptance)
  Summary: This study clearly shows the failure of conventional, distance-based, greedy geographic routing protocols over lossy links. It further establishes the energy-optimal strategy of geographic routing by introducing a new quality-distance metric to measure the progress of packet forwarding. Evaluated through mathematical analysis, extensive simulations and test-bed experiments, our protocol achieves order of magnitude improvement in packet delivery and energy-consumption over the standard greedy geographic forwarding protocol.
- Effect of Inaccuracy on Face Routing: Karim Seada, Ahmed Helmy, Ramesh Govindan, "On the Effect of Localization Errors on Geographic Face Routing in Sensor Networks", The Third IEEE/ACM Int'l Symposium on Information Processing in Sensor Networks (IPSN), April 2004. [Longer version submitted to the ACM Transcations on Sensor Networks.]
  Summary: This study provides a detailed micro-level analysis on effects of location inaccuracy on the correctness and performance of geographic routing. A novel methodology of algorithmic stress analysis of face routing protocols is used to establish complete scenarios and bounds for protocol errors due to location inaccuracy. Based on our analysis, we first prove the impossibility of correct face routing using local algorithms. We then carefully introduce protocol modifications to eliminate the most likely protocol errors, which leads to near-perfect performance even with significant location errors.
- Robust Geocast: K. Seada, A. Helmy, "Efficient and Robust Geocasting Protocols for Sensor Networks", Journal of Computer Communications - Elsevier, Special Issue on Dependable Wireless Sensor Networks. Accepted Spring 2005. [Earlier Version in IEEE WCNC Mar 04]
- K. Seada, A. Helmy, " Rendezvous Regions: A Scalable Architecture for Service Location and Data-Centric Storage in Large-Scale Wireless Networks", IEEE/ACM IPDPS Int'l Workshop on Algorithms for Wireless, Mobile, Ad Hoc and Sensor Networks (WMAN), April 04.
- C. Li, W. Hsu, B. Krishnamachari, A. Helmy, "A Local Metric for Geographic Routing with Power Control in Wireless Networks", IEEE Conference on Sensor and Ad Hoc Communications and Networks (SECON), September 2005 [Acceptance rate: 27%]
Resource Discovery and Query Resolution:
- Multi-variable Query Resolution (ACQUIRE): N. Sadagopan, B. Krishnamachari, A. Helmy, "Active Query Forwarding in Sensor Networks (ACQUIRE)", AdHoc Networks Journal - Elsevier, Vol.3, No.1, pp.91-113, January 2005 [Earlier version in IEEE SNPA, May '03]
  Summary: The ACQUIRE architecture introduces an energy-optimal routing protocol for multi-variable queries in sensor networks. ACQUIRE uses a look-ahead parameter, d, that can be tuned to span the spectrum between random-walk and flooding. Through an analytical framework, we show how d can be actively adjusted, as a function of the network dynamics, to provide optimal query routing.
- A. Helmy, "Small Worlds in Wireless Networks", IEEE Communications Letters, pp. 490-492, Vol. 7, No. 10, October 2003.
  Summary: This study establishes the connection between wireless networks (as spatial graphs) and small worlds. The concept of 'contacts' is introduced to wireless networks and a novel algorithm is presented to dynamically select contacts in a practical and controlled manner. Contacts act as short cuts to minimize the degrees of separation between wireless nodes. The study shows that small worlds can be efficiently constructed in wireless networks by selecting very few contacts. This concept is used to radically improve the performance of discovery protocols in ad hoc and sensor networks.
- A. Helmy, " Mobility-Assisted Resolution of Queries in Large-Scale Mobile Sensor Networks (MARQ)", Computer Networks Journal - Elsevier (Special Issue on Wireless Sensor Networks), Vol. 43, Issue 4, pp. 437-458, Nov 2003. [Text with links] [Abstract.]
- A. Helmy, "Efficient Resource Discovery in Wireless AdHoc Networks: Contacts Do Help", Book chapter in "Resource Management in Wireless Networking", Springer, ISBN: 0-387-23807-7, Vol. 16, 2005. [Earlier Version in IEEE Transactions on Vehicular Technology, Jan '05]
Gradient-based Routing:
- J. Faruque, K. Psounis, A. Helmy, "Analysis of Gradient-based Routing Protocols in Sensor Networks", IEEE/ACM Int'l Conference on Distributed Computing in Sensor Systems (DCOSS), June 2005.
- RUGGED: J. Faruque, A. Helmy, "RUGGED: RoUting on finGerprint Gradients in sEnsor Networks", IEEE Int'l Conf. on Pervasive Services (ICPS), Jul 04. Also, among the best posters from ACM MOBICOM 2003 [Poster, Abstract (.ps)]
Security in Ad Hoc and Sensor Networks:
- S. Tanachaiwiwat, A. Helmy, "VACCINE: War of the Worms in Wired and Wireless Networks", USC Technical Report, July 2005. (Submitted)
- Y. Kim, A. Helmy, "ATTENTION: ATTackEr Traceback using MAC Layer AbNormality DetecTION", USC Tech Report, July 2005. (Submitted)
- Y. Kim, A. Helmy, "SWAT: Small World-based Attacker Traceback in Ad-hoc Networks., IEEE/ACM Mobiquitous Conference, Jul 2005.
- S. Tanachaiwiwat, A. Helmy, "Correlation analysis for alleviating effects of inserted data in wireless sensor networks", IEEE/ACM Mobiquitous Jul 05
TCP over Ad Hoc:
- K. Nahm, A. Helmy, C.-C. Kuo, "TCP over Multihop 802.11 Networks: Issues and Performance Enhancement", ACM MobiHoc, May 2005 (acceptance rate 14%) [Research/code website]

M&M Project: Multicast-based Architecture for IP Mobility

A. Helmy, M. Jaseemuddin, G. Bhaskara, "Multicast-based Mobility: A Novel Architecture for Efficient Micro-Mobility", IEEE Journal on Selected Areas in Communications (JSAC), Special Issue on All-IP Wireless Networks, Vol. 22, No. 4, pp. 677-690, May 2004.
A. Helmy, "A Multicast-based Protocol for IP Mobility Support", ACM SIGCOMM Int'l Workshop on Networked Group Communication (NGC), November 2000 [ ppt] [Here is a library of topologies used for the simulations of M&M (NGC), in a format compatible with the network simulator (NS-2)].
F. Bai, G. Bhaskara, A. Helmy, "Building the Blocks of Protocol Design and Analysis - Challenges and Lessons Learned from Case Studies on Mobile Ad hoc Routing and Micro-Mobility Protocols", ACM Computer Communications Review (CCR), Special issue on Science of Networking Design, Volume 34, Number 3, pp. 57 - 69, July 2004. [Acceptance rate: 15% of 40 submissions]
G. Bhaskara, A. Helmy, "TCP over Micro Mobility Protocols: A Systematic Ripple Effect Analysis", IEEE Vehicular Technology Conf (VTC), Sept '04
A. Helmy, "State Analysis and Aggregation Study for Multicast-based Micro Mobility", IEEE ICC, Vol. 5, pp. 3301-3306, May 2002. [Slides (.ppt)].

STRESS PROJECT: Systematic Testing and Evaluation of Networking Protocols (Completed 4-yrs of DARPA funding) [A follow up project: 4-yr NSf/NASA-funded 'Obtaining Highly Dependable Communication Protocols' has started in Sept '02]

S. Ebrahimi, A. Helmy, S. Gupta, "TCP vs. TCP: a Systematic Study of Adverse Impact of Short-lived TCP Flows on Long-lived TCP Flows", IEEE INFOCOM, March 2005. [Earlier version as ACM SIGCOMM poster, August 2004. (Poster (pdf))]
K. Seada, A. Helmy, S. Gupta, "A Framework for Systematic Evaluation of Multicast Congestion Control Protocols", IEEE Journal on Selected Areas in Communications (JSAC), Special issue on Protocol Design and Testing, Vol. 22, No. 10, Dec 2004. [Earlier version at IEEE GLOBECOM, Nov '02]
A. Helmy, S. Gupta, D. Estrin, 'The STRESS Method for Boundary-point Performance Analysis of End-to-end Multicast Timer-Suppression Mechanisms', IEEE/ACM Transactions on Networking (ToN), Vol. 12, No. 1, pp. 44-58, February 2004. [Earlier version in FORTE/PSTV Oct 2000.]
F. Bai, G. Bhaskara, A. Helmy, "Building the Blocks of Protocol Design and Analysis - Challenges and Lessons Learned from Case Studies on Mobile Ad hoc Routing and Micro-Mobility Protocols", ACM Computer Communications Review (CCR), Special issue on Science of Networking Design, Volume 34, Number 3, pp. 57 - 69, July 2004. [Acceptance rate: 15% of 40 submissions].
A. Helmy, D. Estrin, S. Gupta, "Systematic Testing of Multicast Routing Protocols: Analysis of Forward and Backward Search Techniques", The 9^th International Conference on Computer Communications and Networks (IEEE ICCCN 2000), pp. 590-597, October 2000. Abstract.
S. Begum, M. Sharma, A. Helmy, S. Gupta, "Systematic Testing of Protocol Robustness: Case Studies on Mobile IP and MARS", Proceedings of the 25^th annual IEEE conference on Local Computer Networks (LCN), pp. 369-380, Florida, November 2000. Abstract
A. Helmy, D. Estrin, S. Gupta, "Fault-oriented Test Generation for Multicast Routing Protocol Design", Proceedings of Formal Description Techniques & Protocol Specification, Testing, and Verification (FORTE/PSTV), IFIP, Kluwer Academic Publication, Paris, France, p. 93-109, November 1998.

AQM-based Marking & Fairness

A. Das, D. Dutta, A. Helmy, A. Goel, J. Heidemann, "Low State Fairness: Lower Bounds and Practical Enforcement", IEEE INFOCOM, March 2005.
A. Das, D. Dutta, A. Helmy, "Fair Stateless Aggregate Marking using Active Queue Management Techniques", IEEE International Conference on Management of Multimedia Networks and Services (MMNS), pp. 211-223, October 2002. (Best Paper Award).

VINT/NS PROJECT: The Virtual Internet Network Simulation and the Network Simulator NS-2) (Completed)

L. Breslau, D. Estrin, K. Fall, S. Floyd, J. Heidemann, A. Helmy, P. Huang, S. McCanne, K. Varadhan, Y. Xu, H. Yu, "Advances in Network Simulation", IEEE Computer, vol. 33, No. 5, p. 59-67, May 2000. Abstract
A. Helmy, D. Estrin, "Simulation-based `STRESS' Testing Case Study: A Multicast Routing Protocol", IEEE Sixth International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS), Montreal, Canada, July 1998. Abstract

PIM PROJECT: Multicast Routing Protocols (Completed)

D. Estrin, M. Handley, A. Helmy, P. Huang, D. Thaler, " A Dynamic Bootstrap Mechanism for Rendezvous-based Multicast Routing", Proceedings of IEEE INFOCOM '99, New York, Vol. 3, pp. 1090-1098, March 1999. Abstract [Extended]
D. Estrin, D. Farinacci, A. Helmy, D. Thaler, S. Deering, V. Jacobson, M. Handley, C. Liu, P. Sharma, L. Wei, "Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification, Version 2", RFC 2362/2117 of the Internet Engineering Task Force (IETF), Inter-Domain Multicast Routing (IDMR), June 1998. [RFC2362]
D. Estrin, D. Farinacci, A. Helmy, D. Thaler, S. Deering, V. Jacobson, M. Handley, C. Liu, P. Sharma, L. Wei, "Protocol Independent Multicast (PIM): Motivation and Architecture", Proposed RFC of the IETF/IDMR, October 1996. [.ps]
D. Estrin, D. Farinacci, A. Helmy, V. Jacobson, L. Wei, "Protocol Independent Multicast - Dense Mode (PIM-DM): Protocol Specification", Proposed RFC of the IETF/IDMR, September 1996.

Services: Serving the following conferences/journals: (TPC member unless stated otherwise)

Program Vice-Chair for Wireless/Mobile/Sensor Networks and Computing of IEEE Int'l Conf on Parallel and Distributed Systems (ICPADS '06), Jul'06
On the Editorial Board for the Ad Hoc Networks Journal - ElSevier (Starting Nov. 2004)
IEEE International Conference on Network Protocols (ICNP), Boston, MA, Nov 2005
Panel organizer 'Security, cooperation, and safety in Mobile Ubiquitous Networks', IEEE/ACM Mobiquitous. Invited speaker at ACM Senmetrics, July '05.
IEEE INFOCOM 2005 (Session chair).
IEEE SNPA, Int'l Workshop on Sensor Network Protocols and Applications (with IEEE ICC '03), SANPA '04 (Chair of invited session), Senmetrics '05.
ACM MOBICOM (Wkshp on Vehicular AdHoc Networks) VANET '04.
IEEE BroadNets '04, IEEE BaseNets (Wkshp on Broadband Sensor Networks) '04.
IEEE WCNC, Mar'04 - IEEE Int'l Conf on Mobile and Wireless Communication Networks (MWCN), Oct'04.
IEEE Int'l Workshop on Algorithms for Wireless, Mobile, Ad Hoc and Sensor Networks (IEEE/ACM IPDPS WMAN '04), WMAN '03, WMAN '02.
IEEE Workshop on Energy-Efficient Wireless Communications and Networks (EWCN), with IEEE IPCCC '04.
IEEE Wkshp on Applications and Services in Wireless Networks (ASWN), July '04, IEEE/ACM Int'l Conf on High Performance Computing (HiPC) '04, Med-Hoc-Net 2004, IEEE VTC symposium on IP Mobility, Fall '03.
MMNS '01, MMNS '02, MMNS '03, MMNS '04, (IEEE Int'l Conference on Management of Multimedia Networks and Services)
IEEE SAWN '01 (Symposium on Ad Hoc Wireless Networks, with GLOBECOM)

Selected recent News: [For up-to-date news visit A. Helmy's webpage at UF.]

Jan '06 - Feb '06: A. Helmy chairing the IEEE ICPADS 2006 Wireless and Sensor Networks track. Also elected to Chair the IEEE MMNS 2006 conference. To serve on the TPC for IEEE SECON and IEEE ICNP 2006 Conferences.
Jan '06 - Feb '06: Two papers accepted to IEEE WiNMee 2006 workshop on wireless network measurements. Five papers accepted to IEEE INFOCOM 2006 poster session.
Jan '06: Jabed and Yongjin pass their qualifying exam. Congratulations!
Oct 2005: Tutorial on 'Mobility Modeling for Wireless Networks' at IASTED Int'l Conf on Communications and Computer Networks [Slides (10MB)].
Aug 2005: Annual Merit Review in 2004 for the EE Dept for A. Helmy: 5.0/5.0 in research, 5.0/5.0 in teaching. Ranked 1st among 39 faculty in EE.
Aug 2005: The USC WLAN traces are now added to the mobility library MobiLib. Second release of the IMPORTANT mobility tools is available.
August 2005: Top 0.47% most cited authors in Computer Science (citeseer.ist.psu.edu/allcitedn.html) [Example citations] (Search Google Scholar)
Jul 2005: Invited Talk at the IEEE/ACM Senmetrics workshop. Panel lead and moderator at IEEE/ACM Mobiquitous Conference (slides .ppt).
May/June 2005: Initiated a community-wide library of mobile wireless networks traces (MobiLib). Paper accepted at IEEE SECON 2005.
May/June 2005: R. Govindan, A. Helmy and B. Krishnamachari established the new wireless and sensor networking laboratory in the new RTH bldg.
May/June 2005: Karim Seada, Fan Bai and Narayanan Sadagopan passed their PhD defense exams. Congratulations ! Fan is at General Motors research labs, Karim is at Nokia research labs and Nara is at Yahoo! research.
March '05: Paper (and 2 posters) accepted to ACM MOBIHOC 2005 (acceptance rate: 14%)
March '05: Two papers (and 3 posters) presented at IEEE INFOCOM 2005 (acceptance rate 17%). Paper accepted to IEEE/ACM DCOSS '05.
Nov '04: Paper presented at ACM SenSys 2004 (acceptance rate 14.5%)
Sept '04: New NSF funded project, ACQUIRE on querying in sensor networks, has started.
Jan '04: Release of the IMPORTANT mobility simulation tool (also contributed to NS-2).

Recent/Selected Invited Talks: MIT (Jun05) [presentation .ppt (4.7MB)], Boston U (Jun05), UC-Santa Barbara (Jun05), UC-Irvine (May05), UIUC (Jun04), U Maryland (Jun04), UCLA (May04), GA Tech (Mar04).

The NOMADS group (for design, analysis and testing of Networks Of Mobile Ad-hoc Devices and Sensors) [Old Lab webpage]
Students
How to start research? (A personal note for networking students).

Courses

[For more recent courses visit A. Helmy's webpage at UF.]

EE-579 (Spring '05) Wireless and Mobile Networks Design and Laboratory (syllabus for EE-579).
EE-599: Wireless and Mobile Networks Design and Laboratory (Spring '04, Spring '03, EE-499 Spring '02, Fall �00).
EE-555: Broadband Networks Architecture. (Fall �99, Spring �00, Fall �00, Fall '01, Fall '02, Spring '03, Fall '03, Sp '04, Fall '05, Sp '05).

About my teaching, evaluations and statistics (Fall 99 through Fall 04).

Enter author name or description (e.g., "Ahmed Helmy", or "Helmy Simulation") to get citations and references from Google Scholar.

This page is setup and maintained by: Ahmed Helmy