Method and System for Remote Controlling Operation of Mobile Telecommunication Terminal

A mobile telecommunication terminal provided with a remote control service in cooperation with a remote control server in preparation for a case of loss or theft of the mobile telecommunication terminal in a system which includes:

• a wireless access network which includes a terrestrial infra-structure for transmitting/receiving data wirelessly based on a predetermined protocol, has a handoff function and a radio support/management function, and relays the remote control service;
• a mobile communication network which includes communication equipment for providing a voice telecommunication or data exchange service to a plurality of subscribers through a switching center;
• and the remote control server for approving access of a wired/wireless terminal requesting the access after user authentication, and providing the remote control service, the mobile telecommunication terminal comprising:
• a key input unit for providing numeric keys for inputting telephone numbers and character keys for inputting characters;
• a display unit for displaying operational conditions of the mobile telecommunication terminal, including a power utilization state and radio wave reception strength, together with date and time, and displaying a lock setup mode or lock release mode set according to the remote control service;
• a program storage unit equipped with a terminal control module, which is provided with the remote control service in cooperation with a real time operating system, call processing software for the mobile telecommunication terminal, and the remote control server;
• and
• a microprocessor for controlling an entire operation of the mobile telecommunication terminal so that the mobile telecommunication terminal can smoothly perform voice transmission/reception and data transmission/reception, and controlling an operation of the mobile telecommunication terminal according to the terminal control module so as to enter the lock setup mode or the lock release mode,
• wherein the terminal control module includes:
• a control function for entering the operation of the mobile telecommunication terminal into the lock setup mode, in which an external input including a key input is disabled and only a function of communicating with the remote control server is maintained, according to a lock setup instruction transmitted from the remote control server;
• a control function for entering the operation of the mobile telecommunication terminal into the lock release mode according to a lock release instruction transmitted from the remote control server;
• and
• a control function for entering an external memory into the lock setup mode by establishing predetermined authentication information for the external memory when the mobile telecommunication terminal is equipped with the external memory.

A method for remotely controlling an operation of a mobile telecommunication terminal in preparation for a case of loss or theft of the mobile telecommunication terminal in the system, which includes:

• a wireless access network which includes a terrestrial infrastructure for transmitting/receiving data to/from the mobile telecommunication terminal wirelessly based on a predetermined protocol, has a handoff function and a radio support/management function, and relays a remote control service for preventing a person, other than an owner of the mobile telecommunication terminal, from accessing the operation of the mobile telecommunication terminal without permission;
• a mobile communication network which includes communication equipment for providing a voice telecommunication or data exchange service to a plurality of subscribers through a switching center, and relays the remote control service to the mobile telecommunication terminal;
• and a remote control server for approving access of a wired/wireless terminal requesting the access after user authentication, and providing the remote control service which controls the operation of the mobile telecommunication terminal to enter a lock setup mode or lock release mode, the method comprising the steps of:
• (a) monitoring whether a lock setup instruction to enter the lock setup mode is received from the remote control server;
• (b) decoding the lock setup instruction by a terminal control module installed in the mobile telecommunication terminal, when the lock setup instruction is received in step (a);
• (c) controlling communication channels of the mobile telecommunication terminal according to the decoded lock setup instruction;
• (d) controlling the mobile telecommunication terminal so as to disable an external input including a key input to the mobile telecommunication terminal;
• (e) controlling a supplementary-device unit included in the mobile telecommunication terminal to cause an external memory equipped in the mobile telecommunication terminal to enter the lock setup mode;
• (f) monitoring whether a lock release instruction to enter the lock release mode is received from the remote control server;
• and
• (g) controlling the microprocessor so as to enter the lock release mode when the lock release instruction is received in step (f),
• wherein, in step (c), the mobile telecommunication terminal cuts off a communication channel required for using a voice communication service and a data communication service, and opens a communication channel required for receiving the lock setup instruction or lock release instruction transmitted from the remote control server.