发明名称 |
System and method for adapting transmission rate of a multimedia streaming server using a virtual clock |
摘要 |
A so-called "Virtual Clock" with varying frequency is provided for used by a multimedia streaming server to adapt its transmission rate dynamically to changing network conditions. The "Virtual Clock" system and method of the present invention compensates for a potential limitation of the Internet Real-time Transmission Protocol (RTP), that stamps every packet it delivers with a timestamp and expects the server using this timestamp to schedule the transmission of this particular packet accordingly. Consequently, the transmission rate is pre-determined by the encoded multimedia content when RPT is used. Using the "Virtual Clock" of the present invention, the streaming server has a mechanism to overcome this RTP limitation and can conduct transmission rate adaptation in a way that can balance the bandwidth requirement of the content with the bandwidth availability of the network.
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申请公布号 |
US2006165129(A1) |
申请公布日期 |
2006.07.27 |
申请号 |
US20050538108 |
申请日期 |
2005.06.08 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
LI QIONG;VAN DER SCHAAR MIHAELA |
分类号 |
H04J3/06;H04L12/56;H04L29/06 |
主分类号 |
H04J3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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