Patent ID: 9641347
Date: 2017-05-02
CPC Classifications: H04L,H04M,H04W

Claim:
1. A method for selecting a packet data network gateway (P-GW) by a network node in a wireless communication system, the method comprising: receiving, from a terminal, an attach request including a machine type communication (MTC) group identifier, determining whether the attach request is a first attach request for an MTC group identified by the MTC group identifier, wherein the MTC group is configured for MTC terminals; and selecting the P-GW to perform a function of a policy and charging enforcement function (PCEF) on the MTC group including the terminal, wherein, when the attach request is the first attach request for the MTC group, the network node transmits information on the selected P-GW to a Home Subscriber Server (HSS) for registration, and wherein, when the attach request is a second attach request or a later attach request for the MTC group, the selected P-GW is set to a pre-selected P-GW for the MTC group.