METHOD FOR CONSTRUCTING AND MANAGING INTERNET-BASED OVERLAY MULTICAST TREE

摘要

PURPOSE: A method for constructing and managing an Internet-based overlay multicast tree is provided to construct a balanced overlay multicast tree by determining an optimum parent node for a receiver on a basis of network and tree information. CONSTITUTION: When a session starts, a tree manager performs an initialization by detecting a subnet of a transmitter and generation session information(100). Each agent or a receiver who intends to participate in the session transmits a tree connection request message to the tree manager(200). The tree manager determines a suitable parent agent and informs the participant accordingly(300). Upon receiving information on an upper node as determined from the tree manager, the participant sets a data channel to the corresponding parent node(400). Agents, among participants, transmit a tree state report message to the tree manager at every certain periods while the session is being performed(500).