COMMUNICATION NETWORK SYSTEM AND LEAF-NODE NETWORK ELEMENT OF THE MULTICASTING TREE SIGNAL TRANSMISSION METHOD AND NODE NETWORK ELEMENT THEREOF

摘要

A method of leaf-node network element of the multicasting tree signal transmission and communication network system and node network element thereof in the communication network. Establishing the connection between the source leaf node network element and root node network element of the transmitting signal in the multicasting tree; the source leaf-node network element of the transmitting signal in the multicasting tree transmits signal to the root node network element through the established connection; the root node network element in the multicasting tree receives the transmitted signal and transmits the signal to the destination leaf-node network element in the multicasting tree. An establishing method of the preparative bi-directional connection from the root-node network element to the leaf-node network element in the multicasting tree. When the multicast service supported multicasting tree was established in the connection-oriented network, each leaf-node network element in the multicasting tree may act as the signal source node network element that send signal to other leaf-nodes in the multicasting tree, then it is able to share the multicasting tree possessive network resource furthest during the signal transmitting between multi leaf-node network elements.