Method for reducing the control signaling in handover situations

摘要

The present invention relates to a method, devices, and a program for using IP multicast addresses for mobile terminals (UE) connected to a communication gateway in a wireless communication network. The IP multicast address is used for updating routers in the infrastructure network of where to transport data to the UE when the UE connects to another communication gateway, this may be updated from the new communication gateway or from a mobility management entity relieving a network gateway (e.g. a SAE gateway) of control traffic reducing the risk of bottle necks in the infrastructure network.

主权项

1. In a network comprising a user equipment (UE), a base station serving the UE, and a core network comprising a first node and second node, a method for reducing control signalling in the network, the method comprising:
receiving, at the first node of the core network, information indicating that the UE has transmitted an activation message to activate a user plane data session; and after receiving the information indicating that the UE has transmitted the activation message, (a) the first node of the core network or the second node of the core network assigning an Internet Protocol (IP) multicasting address for sending downlink user plane data to the UE, and (b) the first node of the core network or the second node of the core network providing the IP multicasting address to the base station serving the UE, wherein the IP multicasting address is an IP multicast address and not an IP unicast address.