3,644 research outputs found
Mobile-Based Video Caching Architecture Based on Billboard Manager
Video streaming services are very popular today. Increasingly, users can now
access multimedia applications and video playback wirelessly on their mobile
devices. However, a significant challenge remains in ensuring smooth and
uninterrupted transmission of almost any size of video file over a 3G network,
and as quickly as possible in order to optimize bandwidth consumption. In this
paper, we propose to position our Billboard Manager to provide an optimal
transmission rate to enable smooth video playback to a mobile device user
connected to a 3G network. Our work focuses on serving user requests by mobile
operators from cached resource managed by Billboard Manager, and transmitting
the video files from this pool. The aim is to reduce the load placed on
bandwidth resources of a mobile operator by routing away as much user requests
away from the internet for having to search a video and, subsequently, if
located, have it transferred back to the user.Comment: 8 pages, 1 figure, GridCom-201
Architecture for Cooperative Prefetching in P2P Video-on- Demand System
Most P2P VoD schemes focused on service architectures and overlays
optimization without considering segments rarity and the performance of
prefetching strategies. As a result, they cannot better support VCRoriented
service in heterogeneous environment having clients using free VCR controls.
Despite the remarkable popularity in VoD systems, there exist no prior work
that studies the performance gap between different prefetching strategies. In
this paper, we analyze and understand the performance of different prefetching
strategies. Our analytical characterization brings us not only a better
understanding of several fundamental tradeoffs in prefetching strategies, but
also important insights on the design of P2P VoD system. On the basis of this
analysis, we finally proposed a cooperative prefetching strategy called
"cooching". In this strategy, the requested segments in VCR interactivities are
prefetched into session beforehand using the information collected through
gossips. We evaluate our strategy through extensive simulations. The results
indicate that the proposed strategy outperforms the existing prefetching
mechanisms.Comment: 13 Pages, IJCN
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