Patent ID: 9531557
Filing Date: 2016-12-27
CPC Classification: H04L,H04W

Claim Text:
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.