Patent ID: 8687592
Filing Date: 2014-04-01
Classification: H04W

Abstract:
1. A method for switching a session of a User Equipment (UE) by a Mobility Management Entity (MME) in a wireless communication system, the method comprising: if the UE performs a handover from a macro base station of a macro cell to a femto base station of a femto cell, receiving a path switch request message, which includes a serving gateway relocation Information Element (IE) for requesting a switching from an existing session of the UE to a new session managed by the femto base station, from the femto base station; and switching the existing session of the UE to the new session; if a packet data network connectivity request message has been received from the UE after completing the handover, generating context information of the UE for the new session, the context information including an Internet Protocol (IP) address of the femto serving gateway detected from the serving gateway relocation IE; and transmitting a path switch approval message and the context information to the femto base station, wherein the serving gateway relocation IE comprises information requesting relocation of a serving gateway of the UE to a femto serving gateway within the femto cell.