Mostafa Ammar

About

Mostafa Ammar is a Regents' Professor with the School of Computer Science at the Georgia Institute of Technology. He served as Associate Chair of the School of Computer Science from 2006 to 2012. Dr. Ammar received the S.B. and S.M. degrees from the Massachusetts Institute of Technology and the Ph.D. degree from the University of Waterloo, Ontario, Canada. His research interests are in network architectures, protocols, and services, with contributions in multicast communication and services, multimedia streaming, content distribution networks, network simulation, disruption-tolerant networks, and more recently, mobile cloud computing and network virtualization. He has published extensively in these areas and has received research funding from federal and defense agencies as well as industry partners including NSF, DARPA, AFOSR, ARL, CISCO, IBM, Intel, BellSouth, and Sprint. Dr. Ammar has supervised 35 PhD students, many of whom have gone on to distinguished careers in academia and industry. He is the co-author of the textbook 'Fundamentals of Telecommunication Networks' published by Wiley-Interscience in 1994. He has served the networking research community in multiple roles, including as Editor-in-Chief of the IEEE/ACM Transactions on Networking from 1999 to 2003, and as co-TPC Chair for several major conferences. He currently serves on the steering committee of the IEEE Transactions on Mobile Computing. His awards include the IBM Faculty Partnership Award, Best Paper Award…

Research topics

• Computer Science
• Telecommunications
• Real-time computing
• Computer network
• Computer Security
• Artificial Intelligence
• Embedded system
• Computer vision
• Engineering
• Electrical engineering

Selected publications

• Annulus

  2020 · 62 citations

  Cloud services are deployed in datacenters connected though high-bandwidth Wide Area Networks (WANs). We find that WAN traffic negatively impacts the performance of datacenter traffic, increasing tail latency by 2.5x, despite its small bandwidth demand. This behavior is caused by the long round-trip time (RTT) for WAN traffic, combined with limited buffering in datacenter switches. The long WAN RTT forces datacenter traffic to take the full burden of reacting to congestion. Furthermore, datacent…

  PublisherOA PDFDOI

• ITrackU

  2021 · 33 citations

  Senior authorCorresponding

  High-precision tracking of a pen-like instrument's movements is desirable in a wide range of fields spanning education, robotics, and art, to name a few. The key challenge in doing so stems from the impracticality of embedding electronics in the tip of such instruments (a pen, marker, scalpel, etc.) as well as the difficulties in instrumenting the surface that it works on. In this paper, we present ITrackU, a movement digitization system that does not require modifications to the surface or the…

  PublisherDOI

• 6Fit-A-Part: A Protocol for Physical Distancing on a Custom Wearable Device

  2020 · 24 citations

  Senior authorCorresponding

  The coronavirus pandemic is altering our way of life. As more establishments open, there is an expectation that people will follow physical distancing guidelines. The implementation, however, is poor; just putting up warning signs appealing the general public to keep a distance of 6 feet from others is hardly enough. In this paper we consider the design of a wearable device that raises an alarm if another similar device is detected within a set distance. It uses off-the-shelf ultra-wideband radi…

  PublisherDOI

• QoE Metrics for Interactivity in Video Conferencing Applications

  2024-04-15 · 11 citations

  articleOpen access

  Video conferencing applications (VCAs) have become an indispensable tool for business, educational, and personal communications. There is, therefore, considerable interest in understanding and measuring the Quality of Experience (QoE) delivered by VCAs to their users. Video quality, one QoE measure, has received considerable attention in the literature. In this paper, we are concerned with another important aspect of VCA QoE, namely interactivity. We define this informally as the ability of a VC…

  PublisherOA PDFDOI

• 5G MEC Computation Handoff for Mobile Augmented Reality

  arXiv (Cornell University) · 2021-01-01 · 11 citations

  preprintOpen access

  The combination of 5G and Multi-access Edge Computing (MEC) can significantly reduce application delay by lowering transmission delay and bringing computational capabilities closer to the end user. Therefore, 5G MEC could enable excellent user experience in applications like Mobile Augmented Reality (MAR), which are computation-intensive, and delay and jitter-sensitive. However, existing 5G handoff algorithms often do not consider the computational load of MEC servers, are too complex for real-t…

  PublisherOA PDFDOI

Recent grants

• NETS-NECO: The WAM Continuum: Unified Design and Operation for Wireless and Mobile Networks

  NSF · $450k · 2008–2012

• ITR: Message Ferrying: Mobility-Assisted Data Delivery in Highly Partitioned Networks

  NSF · $325k · 2003–2007

• CSR: Small: Collaborative Research: Towards Collaborative Overlay Problem Diagnosis Using Evidential Reasoning and Adaptive Monitoring

  NSF · $250k · 2010–2013

Frequent coauthors

• Ellen Zegura

  Georgia Institute of Technology

  101 shared

• Qi He

  22 shared

• Mustaque Ahamad

  Georgia Institute of Technology

  21 shared

• George F. Riley

  Georgia Institute of Technology

  17 shared

• Constantinos Dovrolis

  Atlanta Technical College

  13 shared

• Pan Hui

  13 shared

• Kevin C. Almeroth

  Osaka University

  12 shared

• Wenrui Zhao

  State Key Laboratory of Remote Sensing Science

  12 shared

Education

• Ph.D., Computer Science

  University of California, Los Angeles

  1992

• M.S., Computer Science

  University of California, Los Angeles

  1987

• B.S., Computer Science

  University of California, Los Angeles

  1985

Awards & honors

• IBM Faculty Partnership Award (1996)
• Best Paper Award at the 7th WWW conference (1998)
• GT Outstanding Doctoral Thesis Advisor Award (2006)
• Outstanding Service Award from the IEEE Technical Committee…
• ACM Mobihoc Best Paper Award (2012)

Similar researchers at Georgia Institute of Technology

• Frank Dellaerth-65
• Mark Borodovskyh-64
• Irfan Essah-63