Patent ID: 9713055
Date: 2017-07-18
CPC Classifications: H04L,H04W

Claim:
1. A method for performing a non-access stratum (NAS) signaling procedure by a user equipment (UE) in a wireless communication system, the method comprising: receiving, by the UE, a first message including information indicating network failure from a network node of a first network, wherein a radio access technology (RAT) of the first network is LTE; starting, by the UE, a network selection related timer; and selecting, by the UE, a second network from among network candidates while the network selection related timer is running, wherein at least one of the network candidates includes an LTE RAT, and wherein the network candidates are other than a network that corresponds to a same combination of a radio access technology (RAT) and a public land mobile network (PLMN) of the first network.