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September 25 - 27 | Amsterdam, Netherlands
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Thursday, September 27 • 16:45 - 17:00
Lightning Talk: Virtualized Network Functions for Aggregated Traffic Control in Video Content Delivery Networks - Kaliappa Ravindran, City University of New York

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Mobile devices download video clips by sharing the network path from a cloud-hosted ingress node of video content delivery networks (CDN). Virtualized network functions (VNF) realize AIMD-based video rate control algorithm to handle congestion along the path. AIMD is exercised on the aggregated data flows at a source ingress node based on the ’loss reports’ signaled from the receiver egress node. An aggregated control reduces the signaling overhead, relative to the existing methods that anchor an AIMD instance on each user device itself (e.g., DASH). Besides scalability, it also improves the user-perceived quality: low rate jitter and isolation against device faults. We offload aggregated AIMD-based control to the in-network overlay nodes serving as VNFs for video content caching & rendering. The ’last-mile’ bandwidth control is done by fine-granular video encoders in the devices.

Speakers
KR

Kaliappa Ravindran

Professor, City University of New York (CUNY - Graduate Center & City College)
Kaliappa ("Ravi") Ravindran is a Professor of Computer Science in the Grove School of Engineering at the City University of New York. Earlier, he had held faculty positions at the Kansas State University and at the Indian Institute of Science. He had also worked as a Control Systems... Read More →


Thursday September 27, 2018 16:45 - 17:00
Emerald