Patent ID: 8625523

Claim:
A method for path switching between an evolved Node B (eNB) and a Mobile Management Entity (MME), the method comprising the steps of: transmitting, by the eNB, a Path Switch Request message informing that a User Equipment (UE) has changed cell, to the MME, the Path Switch Request message comprising an eNB UE S1AP ID, a Tracking Area Identifier (TAI), and cell Identifier (ID), the eNB UE S1AP ID uniquely identifying UE association over an S1 interface within the eNB; and receiving, by the eNB, a Path Switch Request Acknowledge message comprising an MME UE S1AP ID and the eNB UE S1AP ID, from the MME, the MME UE S1AP ID uniquely identifying UE association over an S1 interface within the MME, wherein the TAI corresponds to a cell in which the UE is located.