An IPTV Implementation of a Campus Media Center
| Autor: | Chia-Yen Wu, 吳家彥 |
|---|---|
| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 A real-time P2P-IPTV system has been developed in this thesis. The system comprises: one digital right management server (DRM server), one media streaming server and many IPMP terminal peers. When one new peer requests the media server to join the IPTV system, the DRM server afer recognizing its ID, transmit by secured data a key to unlock the input stream and the certification for displaying the file according to granted right. To improve the IPTV service efficiency, the system would select a parent peer with low-delay and uplink capability better than the incoming peer. It would maintain the basic stable transmission framework. When one peer would leave, it has to find for each children peer a new parent peer according to above rules before updating the parent peer parameter of current one. In addition, the system can adjust the streaming size of media server in accordance with current network condition. When one peer import the streaming, it would also outport the streaming to other online peers, which would help to distribute the transmission loading for the whole IPTV system. The key of user profile is encrypted with AES. The certificate is encrypted with regularly updated DES keys to prevent hacker attack. Experiments show that the average frame rate and the transmission delay are maintained in good performances even when most peers are with low uplink capability. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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