Patent ID: 8539088
Filing Date: 2013-09-17
Classification: H04L

Abstract:
1. A session monitoring method based on multicast technologies, comprising: setting a specific multicast group in an Internet Protocol (IP) session dynamically or statically in an Edge Node (EN) and a User Equipment (UE) in a stage of setting up an IP session; joining by a user, the specific multicast group in the IP session; monitoring by an Access Node (AN): members of the specific multicast group in the IP session, and reporting obtained information about the members of the specific multicast group in the IP session to the EN; obtaining by the EN, the obtained information about the members of the specific multicast group in the IP session reported from the AN; updating by the EN, keepalive states of member users of an IP session group; wherein the IP session group corresponds to the specific multicast group in the IP session, a member user of the IP session group corresponds to a member of the specific multicast group in the IP session; and wherein the IP session group is defined by any one of: if the user has joined the specific multicast group in the IP session and becomes the member of the specific multicast group in the IP session, the keepalive state of the unicast IP session between the user and the EN is alive.