Patent ID: 9265029
Filing Date: 2016-02-16
CPC Classification: H04W

Claim Text:
1. A method for updating a multicast tree, comprising: receiving, by a first multicast node, a data packet sent by a first Mobile Access Gateway (MAG); constructing, by the first multicast node, a Join message for generating a multicast tree when it is determined that a multicast source handover instruction is carried in the data packet, and forwarding address information of a second MAG carried in the data packet via the Join message; updating, by a second multicast node which receives the Join message, a multicast routing according to the address information of the second MAG carried in the Join message; and continuing forwarding the Join message, by the second multicast node, until the second MAG receives the Join message after the second multicast node updates the multicast routing according to the address information of the second MAG; wherein the updating the multicast routing, by the second multicast node which receives the Join message, according to the address information of the second MAG carried in the Join message, comprises: