Proxy cache management for fine-grained scalable video streaming

Jiangchuan Liu, Xiaowen Chu, Jianliang Xu

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

24 Citations (Scopus)


Caching video objects at proxies close to clients has attracted a lot of attention in recent years. To meet diverse client bandwidth conditions, there have been research efforts to combine proxy caching with video layering or transcoding. Nevertheless, these adaptive systems suffer from either coarse adaptation granularity due to the inflexible structures of existing layered coders or high computation overhead due to the transcoding operations. In this paper, we propose a novel adaptive video caching framework that enables low-cost and fine-grained adaptation. The innovative approach employs the MPEG-4 Fine-Grained Scalable (FGS) video with post-encoding rate control. We demonstrate that the proposed framework is both network aware and media adaptive: clients can be of heterogeneous streaming rates, and the backbone bandwidth consumption can be adaptively controlled. We also examine the design and management issues in the framework, in particular, the optimal stream portions to cache and the optimal streaming rate to each client Simulation results demonstrate that, compared to non-adaptive caching, the proposed framework with optimal cache management not only achieves significant reduction on transmission costs but also enables flexible utility assignment for the heterogeneous clients. Meanwhile, its computational overhead is kept at a low level, implying that it is practically deployable.

Original languageEnglish
Title of host publicationProceedings of 23rd IEEE Conference on Computer Communications, IEEE INFOCOM 2004
Number of pages11
Publication statusPublished - Mar 2004
EventThe 23rd Annual Joint Conference of the IEEE Computer and Communications Societies , IEEE INFOCOM 2004 - Hong Kong Convention and Exhibition Centre, Hong Kong, Hong Kong
Duration: 7 Mar 200411 Mar 2004 (Link to conference website) (Link to conference proceedings)

Publication series

NameProceedings of IEEE INFOCOM
ISSN (Print)0743-166X


ConferenceThe 23rd Annual Joint Conference of the IEEE Computer and Communications Societies , IEEE INFOCOM 2004
Country/TerritoryHong Kong
CityHong Kong
Internet address

Scopus Subject Areas

  • Computer Science(all)
  • Electrical and Electronic Engineering


Dive into the research topics of 'Proxy cache management for fine-grained scalable video streaming'. Together they form a unique fingerprint.

Cite this