3G/LTE Gateway server system for providing connection maintenance between central control server and terminal of vehicle in the 3G/LTE wireless networks and control method thereof

The present invention relates to a gateway server system for providing continuity of a connection between a control server and a vehicle terminal in a 3G or LTE wireless network, and also relates to a method for controlling the gateway server system. More specifically, the present invention relates to a gateway server system for providing continuity of a connection between a control server and a vehicle terminal in a 3G or LTE wireless network, which can detect an interruption adapted to occur in a connection for data communication with a currently connected control server or adapted to be caused by a change in an IP address of a vehicle terminal during handoff between wireless base stations attributable to movement of a vehicle, which can reestablish the connection, and which can resume the data communication, thereby maintaining continuity of the connection. For this purpose, according to the present invention, provided is the gateway server system for providing continuity of a connection between a control server and a vehicle terminal in a 3G or LTE wireless network, i.e., a network system for providing a connection between a control server and at least one vehicle terminal in a 3G or LTE wireless network including the vehicle terminal capable of communicating with the control server, the gateway server system comprising a gateway server which enables the at least one moving vehicle terminal and the control server to communicate with each other over the 3G or LTE wireless network, which assigns a reserved connectable IP address to the vehicle terminal in response to a request for a change in connection information for an IP address of the vehicle terminal during handoff attributable to transition between base stations for the vehicle terminal, and which changes the connection information based on a new IP address of the vehicle terminal via the assigned reserved IP address and a port, so the connection between the vehicle terminal and the control server can be continuously maintained in an IP address-based communication environment. Furthermore, also provided is the method for controlling the gateway server system. Accordingly, a connection between the vehicle terminal and the control server can be continuously maintained. 본 발명은 3G/LTE 무선망에서의 관제 서버와 차량 단말기 간의 연결 지속성을 제공하는 게이트웨이 서버 시스템 및 그 제어방법에 관한 것으로, 차량의 위치 이동에 따른 무선 기지국 간의 핸드오프 시 차량 단말기의 IP 주소가 변경되어 현재 연결되어 있는 관제 서버와의 데이터 통신이 끊어지는 것을 감지하여 다시 연결을 맺고 통신을 재개할 수 있도록 함으로써, 연결 지속성을 유지하기 위한 것이다. 이를 위하여 본 발명