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Author Wang, Bing ♦ Sen, Subhabrata ♦ Adler, Micah ♦ Towsley, Don
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Proxy Caching ♦ Asynchronous Client ♦ Proxy Cache Size ♦ Video Repository ♦ Small Prefix Cache ♦ Remote Server ♦ Aggregate Network Bandwidth Cost ♦ Optimal Proxy Cache Allocation ♦ Substantial Saving ♦ Unicast Environment ♦ Proxy-assisted Reactive Transmission Scheme ♦ Heterogeneous Video ♦ Unicast Versus Multicast Capability ♦ Low Startup Delay ♦ Cache Allocation Policy ♦ Stream Merging ♦ Traditional Serverbased Reactive Transmission Scheme ♦ Transmission Scheme ♦ Significant Cost Saving ♦ Optimal Proxy Prefix Cache Allocation ♦ Resultant Transmission Cost ♦ Transmission Cost ♦ Proxy-assisted Delivery Scheme ♦ Streaming Media Distribution
Description in Proc. IEEE InfoCom
In this paper, we address the problem of efficiently streaming a set of heterogeneous videos from a remote server through a proxy to multiple asynchronous clients so that they can experience playback with low startup delays. We develop a technique to analytically determine the optimal proxy prefix cache allocation to the videos that minimizes the aggregate network bandwidth cost. We integrate proxy caching with traditional serverbased reactive transmission schemes such as batching, patching and stream merging to develop a set of proxy-assisted delivery schemes. We quantitatively explore the impact of the choice of transmission scheme, cache allocation policy, proxy cache size, and availability of unicast versus multicast capability, on the resultant transmission cost. Our evaluations show that even a relatively small prefix cache (10%-20% of the video repository) is sufficient to realize substantial savings in transmission cost. We find that carefully designed proxy-assisted reactive transmission schemes can produce significant cost savings even in predominantly unicast environments such as the Internet.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2002-01-01