An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous Environment
We investigate the video assignment problem of a hierarchical Video-on-Demand (VOD) system in heterogeneous environments where different quality levels of videos can be encoded using either replication or layering. In such systems, videos are delivered to clients either through a proxy server or vid...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2010-01-01
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| Series: | International Journal of Digital Multimedia Broadcasting |
| Online Access: | http://dx.doi.org/10.1155/2010/645049 |
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| _version_ | 1832558156575670272 |
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| author | King-Man Ho Wing-Fai Poon Kwok-Tung Lo |
| author_facet | King-Man Ho Wing-Fai Poon Kwok-Tung Lo |
| author_sort | King-Man Ho |
| collection | DOAJ |
| description | We investigate the video assignment problem of a hierarchical Video-on-Demand (VOD) system in heterogeneous environments where different quality levels of videos can be encoded using either replication or layering. In such systems, videos are delivered to clients either through a proxy server or video broadcast/unicast channels. The objective of our work is to determine the appropriate coding strategy as well as the suitable delivery mechanism for a specific quality level of a video such that the overall system blocking probability is minimized. In order to find a near-optimal solution for such a complex video assignment problem, an evolutionary approach based on genetic algorithm (GA) is proposed. From the results, it is shown that the system performance can be significantly enhanced by efficiently coupling the various techniques. |
| format | Article |
| id | doaj-art-1e8b9bf1c29b4712a8f6d1195cec1196 |
| institution | Kabale University |
| issn | 1687-7578 1687-7586 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Digital Multimedia Broadcasting |
| spelling | doaj-art-1e8b9bf1c29b4712a8f6d1195cec11962025-02-03T01:32:57ZengWileyInternational Journal of Digital Multimedia Broadcasting1687-75781687-75862010-01-01201010.1155/2010/645049645049An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous EnvironmentKing-Man Ho0Wing-Fai Poon1Kwok-Tung Lo2Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong KongDepartment of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong KongDepartment of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong KongWe investigate the video assignment problem of a hierarchical Video-on-Demand (VOD) system in heterogeneous environments where different quality levels of videos can be encoded using either replication or layering. In such systems, videos are delivered to clients either through a proxy server or video broadcast/unicast channels. The objective of our work is to determine the appropriate coding strategy as well as the suitable delivery mechanism for a specific quality level of a video such that the overall system blocking probability is minimized. In order to find a near-optimal solution for such a complex video assignment problem, an evolutionary approach based on genetic algorithm (GA) is proposed. From the results, it is shown that the system performance can be significantly enhanced by efficiently coupling the various techniques.http://dx.doi.org/10.1155/2010/645049 |
| spellingShingle | King-Man Ho Wing-Fai Poon Kwok-Tung Lo An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous Environment International Journal of Digital Multimedia Broadcasting |
| title | An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous Environment |
| title_full | An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous Environment |
| title_fullStr | An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous Environment |
| title_full_unstemmed | An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous Environment |
| title_short | An Evolutionary Video Assignment Optimization Technique for VOD System in Heterogeneous Environment |
| title_sort | evolutionary video assignment optimization technique for vod system in heterogeneous environment |
| url | http://dx.doi.org/10.1155/2010/645049 |
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