•   When: Tuesday, September 19, 2023 from 11:00 AM to 12:00 PM
•   Speakers: Sonia Faymy, Purdue University
•   Location: Nguyen Engineering Bldg, Conference Room 4201
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Abstract:

The increasing popularity of video streaming, video conferencing, and interactive virtual reality applications has altered the nature of network traffic and user Quality of Experience (QoE) requirements. These multimedia applications often run on heterogeneous, wirelessly-connected, resource-constrained devices, and have important use cases in education, healthcare, and business. Supporting such applications is complicated by their high network traffic volume and stringent latency requirements.

In this talk, we investigate multimedia applications in three contexts: (i) in a wide area network, (ii) in a wireless access network, and (iii) in application design.  First, we show how simple multipath routing in a wide area network may adversely impact application QoE, and we propose new routing path selection approaches.  Second, we measure application QoE over an enterprise-grade Wi-Fi network to understand the impact of Wi-Fi control parameters on user QoE, and analyze the relation between Wi-Fi performance and application QoE.  Third, we design immersive video streaming applications that reduce network bandwidth requirements using non-linear sampling or using near-far partitioning.

Speaker Biography:

Sonia Fahmy is a professor of Computer Science at Purdue University. Her research interests lie in the design and evaluation of network architectures and protocols.  She received the National Science Foundation CAREER award in 2003. Her research has been supported by grants from the government and industry, including NSF, DHS, AT&T, BBN, Cisco Systems, Hewlett-Packard, Juniper Networks, Meta, Northrop Grumman, and Schlumberger.  She served on the organizing or technical program committees of several conferences including ACM SIGCOMM, SIGMETRICS, MOBICOM, CoNEXT, and SOSR, and IEEE INFOCOM, ICNP, and ICDCS, and on the editorial boards of IEEE/ACM Transactions on Networking, IEEE Transactions on Mobile Computing, and IEEE Transactions on Computers.  She is a fellow of the IEEE.