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System and method for enabling fast switching between psse channels

A channel switching and fast technology, applied in the transmission system, two-way working system, image communication, etc., can solve the problems of not fully supporting channel dynamic addition and removal, and not defining the indication of out-of-band signaling relationship

Inactive Publication Date: 2009-09-23
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, this arrangement does not fully support dynamic addition and removal of channels, since all channels are described in the SDP
The proposal containing this arrangement foresees a possibility to indicate that the channel list is delivered out-of-band by other mechanisms, but does not define how to achieve this out-of-band signaling and the indication of the relation to the SDP description

Method used

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  • System and method for enabling fast switching between psse channels
  • System and method for enabling fast switching between psse channels
  • System and method for enabling fast switching between psse channels

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Embodiment Construction

[0020] Various embodiments of the present invention relate to a system and method for replacing an existing media stream of a streaming session with an alternative media stream without tearing down the RTSP session and only providing minimal delay. In various embodiments, by sending a switching command to the streaming server, the client indicates to the server that it wants to use another stream to replace the media stream it is currently consuming, where the switching command indicates the old media stream and the new media stream. Media streaming. With this command, the channel switching time is short because there is no need to negotiate transmission parameters or configure firewalls. As discussed herein, it should be noted that the term "media stream" can include audio and / or video streams, and potentially other types of content or data. For example, still images, subtitles, etc. can also be in the media stream.

[0021] The various embodiments discussed herein allow for impr...

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Abstract

A system and method for replacing existing media streams of a streaming session with alternative media streams, without tearing down the RTSP session and providing only a minimal delay. In various embodiments of the present invention, the client indicates to the server that it wishes to replace a media stream that it is currently consuming with another stream by sending a switch command to the streaming server, with the switch command indicating the old media stream and the new media stream. A feature is also provided for enabling the receiver to mute and unmute a single media stream. A client may query the server to find out whether fast channel switching is supported by the server.

Description

Technical field [0001] The present invention generally relates to the 3rd Generation Partnership Project (3GPP) Packet Switched Streaming Service (PSS). More particularly, the present invention relates to the use of fast channel switching in PSS services. Background technique [0002] This section is intended to provide the background or context of the invention recited in the claims. The description here may include concepts that may be implemented, but not necessarily concepts that have been previously conceived or implemented. Therefore, unless otherwise specified herein, the content described in this section is not the prior art for the specification and claims of the application, and is not considered to be included in this section as prior art. [0003] 3GPP PSS is a 3GPP solution for enabling packet-switched streaming in mobile devices. PSS defines the protocols and media codecs used to enable streaming services for mobile devices. PPS is based on Real Time Streaming Proto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08H04N7/173H04L65/613
CPCH04N21/6587H04N21/643H04N21/4384H04L29/06469H04L65/4092H04N21/6437H04N7/17318H04N21/435H04N21/44016H04N21/235H04N21/23424H04L65/613H04N21/60H04L65/40
Inventor I·布阿兹兹
Owner NOKIA CORP