On demand peer-to-peer video streaming with multiple description coding
US7986637B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2009 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Nov 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1048
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A peer-to-peer novel video streaming scheme is described in which each peer stores and streams videos to the requesting client peers. Each video is encoded into multiple descriptions and each description is placed on a different node. If a serving peer disconnects in the middle of a streaming session, the system searches for a replacement peer that stores the same video description and has sufficient uplink bandwidth. Employing multiple description coding in a peer-to-peer based network improves the robustness of the distributed streaming content in the event a serving peer is lost. Video quality can be maintained in the presence of server peers being lost. The video codec design and network policies have a significant effect on the streamed video quality. The system performance generally improves as the number of descriptions M for the video increases, which implies that a higher video quality can be obtained with the same network loading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.