Patent ID: 9143722
Filing Date: 2015-09-22
Classification: H04L,H04N

Abstract:
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.