OVERLAY MULTICASTING SYSTEM FOR GROUP MEDIA TRANSMISSION APPLICATION SERVICE WHICH IS COMPOSED OF MULTIPLEX STREAM

摘要

PURPOSE: An overlay multicast system and method thereof for a group media transmission application service are provided to perform merge, partition, transmission of additional stream and main stream that is inputted from a parent node. CONSTITUTION: A merge unit(110) merges additional stream in multi stream and main stream that is inputted from a parent node. A division unit(120) selectively divides main stream or additional stream from multi stream. A recording unit(130) records stream correlation information. An analysis unit(140) determines the merge of stream in a corresponding node.