Patent ID: 8848665
Filing Date: 2014-09-30
Classification: H04L,H04W

Abstract:
1. A network system comprising: a plurality of mobile terminals; a plurality of base stations connected to the mobile terminals by radio; a first gateway connected to the base stations via a plurality of first network apparatuses; a second gateway connected to the first gateway via a plurality of second network apparatuses; and a management server connected to the base stations and the first gateway, wherein a first of the mobile terminals is connected to a first of the base stations and the first base station transmits a request for connection with the first mobile terminal to the management server; wherein the first gateway thereafter receives a first signal from the management server, the first signal being configured to include a request for connection between the first mobile terminal and the second gateway, an identifier of the second gateway, and an identifier of the first mobile terminal; wherein the first gateway transmits a second signal to a destination specified by the identifier of the second gateway included in the first signal, the second signal being configured to include the identifier of the first mobile terminal included in the first signal and an identifier of the first gateway; wherein the second gateway transmits a third signal to a destination specified by the identifier of the first gateway included in the second signal, the third signal being configured to include the identifier of the second gateway and an MPLS allocation flag indicating allocation of an MPLS path to a route between the first mobile terminal and the second gateway; wherein, based on the MPLS allocation flag included in the third signal, the first gateway transmits a fourth signal for MPLS path allocation to a destination specified by the second gateway included in the third signal via the second network apparatuses, the fourth signal being configured to include the identifier of the first mobile terminal; wherein the first base station receives a fifth signal from the first gateway via the management server, the fifth signal being configured to include the identifier of the first gateway and the MPLS allocation flag; wherein, based on the MPLS allocation flag included in the fifth signal, the first base station transmits a sixth signal for MPLS path allocation to a destination specified by the identifier of the first gateway included in the fifth signal via the first network apparatuses, the sixth signal being configured to include the identifier of the first mobile terminal; and wherein, after the first mobile terminal is connected to the second base station, the second base station transmits a seventh signal for MPLS allocation to a plurality of third network apparatuses provided to a route for communication between the second base station and the first gateway, the seventh signal being configured to include the identifier of the first mobile terminal.