发明名称 |
ON-DEMAND MULTI-CHANNEL STREAMING SESSION OVER PACKET-SWITCHED NETWORKS |
摘要 |
<p>The invention provides a solution for switching between channels belonging to one on-demand multi-channel streaming session. An aggregation procedure for aggregating of a number of session descriptions parameters corresponding to a multitude of channels into one single session description is proposed. Further each channel is described by a mandatory unique identifier, which can be referenced in a channel switch request and an optional human readable identifier for display in a title bar or a channel selection menu. A corresponding client application processes the SDP describing the channel bundle and uses the found information for allowing a user to switch to a channel associated with a certain identifier. Signaling of a channel switch request is done preferably via an RTSP SET PARAMETR message or as an alternative out-band via HTTP. A channel switch control unit, which is part of the multi-channel streaming server, receives a multitude of RTP flows and selects one of the flows for forwarding to the client. A switching point determination is a part of the channel switch control unit and determines the next possible point of time for switching to a requested channel. The client application receives time information for the switch point in response to a channel switch request.</p> |
申请公布号 |
WO2006084503(A1) |
申请公布日期 |
2006.08.17 |
申请号 |
WO2005EP50544 |
申请日期 |
2005.02.08 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);HORN, UWE;LOHMAR, THORSTEN |
发明人 |
HORN, UWE;LOHMAR, THORSTEN |
分类号 |
H04L29/06;H04N7/24 |
主分类号 |
H04L29/06 |
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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