Paper Info
Title
Challenges and opportunities in content distribution networks: A case study
Abstract
In this paper we present some contemporary examples of research-oriented as well as commercial content delivery networks (CDN)s. We discuss how both types of CDNs complement each other in tackling the posed technical and commercial challenges. We also show which performance metrics such as quality of experience (QoE) and time to first byte (TTFB) best capture the dynamics of traffic and services in CDNs. The core of this paper is our proposed network architecture for CDN providers/operators. The architecture combines video multicast optimized trees and cross-layer coordination between the physical DWDM layer (L1) and network layer (L3) for achieving higher efficiency and lower latency values for live streaming and on demand (VoD) video. Due to the pilot implementation of the presented concept being limited in scale, we use simulations in order to perform proof-of-concept on a sufficiently large environment. Results show that there is a strong correlation between the TTFB and QoE metrics with the former taking on values as low as 75 msec in a national 3-tier network.
Year
DOI
Venue
2012
10.1109/GLOCOMW.2012.6477717
Globecom Workshops
Keywords
Field
DocType
IP networks,multicast communication,peer-to-peer computing,quality of experience,trees (mathematics),video on demand,video streaming,wavelength division multiplexing,CDN operators,CDN providers,IP transit,QoE metrics,TTFB,VoD,commercial content delivery networks,contemporary examples,content distribution networks,cross-layer coordination,live streaming,lower latency values,national 3-tier network,network architecture,network layer,peer to peer,performance metrics,physical DWDM layer,quality of experience,research-oriented content delivery networks,time to first byte,video multicast optimized trees,video on demand,Content Delivery Network (CDN),IP Transit,Peering,Quality of Experience,Video Streaming
Wavelength-division multiplexing,Architecture,Computer science,Latency (engineering),Network layer,Network architecture,Computer network,Time To First Byte,Operator (computer programming),Quality of experience
Conference
ISSN
ISBN
Citations 
2166-0069
978-1-4673-4940-6
3
PageRank 
References 
Authors
0.39
4
2
Name
Order
Citations
PageRank
Muslim Elkotob1355.06
Karl Andersson28022.20