Method and apparatus for providing session description for a media session
First Claim
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1. A method comprising:
- constructing at a source node in a media session, a session description pointer to a session description for the media session, the session description pointer comprising back-map data pointing from a media stream to said session description;
inserting at the source node, the session description pointer in a packet within the media stream of the active media session; and
transmitting the packet from the source node to a receiver node in the media session;
wherein the session description pointer is configured to allow an intermediate node located between the source node and the receiver node in the media session to obtain said session description, said session description comprising metadata for interpreting structure and content of the media stream at the intermediate node; and
wherein the back-map data is inserted in a Real-time Transport Protocol (RTP)/Real-time Transport Control Protocol (RTCP) stream.
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Abstract
In one embodiment, a method includes constructing at a source node, a session description pointer to a session description for a media session, inserting the session description pointer in a packet in a media stream of the media session, and transmitting the packet to a receiver node. The session description pointer is configured for use in obtaining the session description by an intermediate node located between the source node and the receiver node. An apparatus is also disclosed.
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Citations
19 Claims
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1. A method comprising:
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constructing at a source node in a media session, a session description pointer to a session description for the media session, the session description pointer comprising back-map data pointing from a media stream to said session description; inserting at the source node, the session description pointer in a packet within the media stream of the active media session; and transmitting the packet from the source node to a receiver node in the media session; wherein the session description pointer is configured to allow an intermediate node located between the source node and the receiver node in the media session to obtain said session description, said session description comprising metadata for interpreting structure and content of the media stream at the intermediate node; and wherein the back-map data is inserted in a Real-time Transport Protocol (RTP)/Real-time Transport Control Protocol (RTCP) stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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a processor for processing a packet received from a source of a media session in a media stream and containing a session description pointer to a session description for the media session, transmitting a request for the session description using said session description pointer, and processing said session description for use in interpreting the media stream at an intermediate node located between the source and a receiver; and memory for storing said session description; wherein said session description comprises metadata for interpreting structure and content of the media stream at the apparatus and the session description pointer comprises back-map data pointing from the media stream to said session description; and wherein the back-map data is inserted in a Real-time Transport Protocol (RTP)/Real-time Transport Control Protocol (RTCP) stream. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
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a processor for constructing a session description pointer to a session description for a media session, inserting the session description pointer in a packet in a media stream of the media session, and transmitting the packet to a receiver node in the media session; and memory for storing said session description; wherein the session description pointer is configured to allow an intermediate node located between the apparatus and the receiver node to obtain said session description, said session description comprising metadata for interpreting structure and content of the media stream at the intermediate node, the session description pointer comprising back-map data pointing from the media stream to said session description; and wherein the back-map data is inserted in a Real-time Transport Protocol (RTP)/Real-time Transport Control Protocol (RTCP) stream. - View Dependent Claims (17, 18, 19)
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Specification