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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xu Du Tai Wang Zongkai Yang Jiang Yu Wei Liu |
| Copyright Year | 2006 |
| Description | Author affiliation: Dept. of Electronics and Information Engineering, Huazhong Univerisity of Science and Technology, China. liuwei@mail.hust.edu.cn (Wei Liu) || Dept. of Electronics and Information Engineering, Huazhong Univerisity of Science and Technology, China. duxu@263.net (Xu Du) || Dept. of Electronics and Information Engineering, Huazhong Univerisity of Science and Technology, China. frankyu@263.net (Jiang Yu) || Dept. of Electronics and Information Engineering, Huazhong Univerisity of Science and Technology, China. zkyang@mail.hust.edu.cn (Zongkai Yang) || Dept. of Electronics and Information Engineering, Huazhong Univerisity of Science and Technology, China. wang.tai@163.com (Tai Wang) |
| Abstract | Caching video objects at the edge of the back-bone network has become a hot spot in the video delivery research. Some researchers proposed segmentation-based caching algorithms to improve the disk utility in the homogeneous environment. Other researchers proposed caching algorithms with video layering or transcoding to improve the perceptual quality in the heterogeneous environment. However, for a low cost proxy, these systems are suffering from either inflexible structures or high computation. In this paper, the overall quality hit ratio(QHR) is proposed to measure how well the clients' requests on the quality are satisfied. Aiming to achieve the highest QHR, an intelligent caching algorithm is designed to determine the appropriate perceptual quality of the segments cached in the proxy. This innovative approach takes not only the access bandwidth distribution into account, but also the segment popularity distribution. Simulation results demonstrate that our variable rate caching(VRC) algorithm not only achieves the highest QHR but also keeps its complexity at an acceptable level. |
| Starting Page | 1046 |
| Ending Page | 1051 |
| File Size | 239215 |
| Page Count | 6 |
| File Format | |
| ISBN | 1424403553 |
| ISSN | 81649547 |
| DOI | 10.1109/ICC.2006.254885 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2006-06-11 |
| Publisher Place | Turkey |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Bandwidth Costs Spine Transcoding Algorithm design and analysis Cache storage Computational modeling Jitter Delay effects Explosives Video Delivery Caching |
| Content Type | Text |
| Resource Type | Article |
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