Patent ID: 9642065
Date: 2017-05-02
CPC Classifications: H04W

Claim:
1. A method for managing a tracking area identity (TAI) list to be used by a user equipment (UE), and the method comprising: storing, by the UE, a forbidden TAI list; receiving, by the UE, a first message comprising a TAI list from a mobile management entity (MME), wherein the first message is one of ATTACH ACCEPT or GUTI REALLOCATION COMMAND; determining, by the UE, whether the received TAI list and the forbidden TAI list contain a first tracking area which is on both the received TAI list and the forbidden tracking area list; in response to obtaining the first tracking area through comparing the TAI list received from the first message and the forbidden TAI list stored in the UE, revising, by the UE, the received TAI list by removing the first tracking area from the received TAI list such that the first tracking area is only on the forbidden TAI list; updating, by the UE, a previous TAI list stored in the UE by using the revised TAI list not including the first tracking area; and synchronizing, by the UE, the revised TAI list with the MME of a serving network.