GATEWAY DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

摘要

A gateway apparatus arranged between a base station and the backbone network monitors a communication signal transmitted from a terminal apparatus through the base station. In a case where specifying information is not included in the communication signal, the gateway apparatus outputs a user data signal from the terminal apparatus through the base station to the backbone network. In a case where the specifying information is included in the communication signal, the gateway apparatus forwards the user data signal from the terminal apparatus through the base station to an external network.