WIRELESS COMMUNICATION SYSTEM, SIM CARD, MOBILE COMMUNICATION TERMINAL, AND DATA GUARANTEEING METHOD
First Claim
1. A wireless communication system comprising:
- a mobile communication terminal including;
a SIM card in which data including data for determining whether or not wireless communication is usable is stored;
an RF communication unit for performing high-frequency power amplification to output a high-frequency signal for performing the wireless communication as well as processing of a signal received by the wireless communication; and
a host unit for managing control of the SIM card and the RF communication unit;
a plurality of base stations each for receiving an electric wave from the mobile terminal or transmitting the electric wave to the mobile communication terminal, and securing a wireless communication line between itself and the mobile communication terminal with which the base station is in communication;
a wireless network control unit for intensifying the electric waves transmitted/received by the base stations to perform integrated control; and
a base station server for executing mirror-updating and restoration of the data stored in the SIM card in response to a request from the mobile communication terminal,wherein the base station server has a data storage unit to which the data stored in the individual SIM card is mirror-updated, and mirror-updates the data in the SIM card to the data storage unit when data is newly stored in the SIM card or the data in the SIM card is updated.
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Accused Products
Abstract
The loss of data stored in a secure memory card, such as a SIM card, due to the physical destruction thereof is prevented. A host unit performs card authentication of a memory card, and transmits update data for the memory card by security communication to update data when the result of the authentication is OK. Then, the host unit outputs a request for mirror-updating the card data to a base station server. When an access is permitted, the card data is transmitted to the base station server via the host unit to mirror-update the card data. When the mirror-updating of the card data is completed, the base station server returns a completion confirmation to the host unit, so that a data backup process is completed. By thus causing the base station server to mirror-update the data in the memory card, the loss of the stored data is prevented.
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Citations
26 Claims
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1. A wireless communication system comprising:
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a mobile communication terminal including;
a SIM card in which data including data for determining whether or not wireless communication is usable is stored;
an RF communication unit for performing high-frequency power amplification to output a high-frequency signal for performing the wireless communication as well as processing of a signal received by the wireless communication; and
a host unit for managing control of the SIM card and the RF communication unit;a plurality of base stations each for receiving an electric wave from the mobile terminal or transmitting the electric wave to the mobile communication terminal, and securing a wireless communication line between itself and the mobile communication terminal with which the base station is in communication; a wireless network control unit for intensifying the electric waves transmitted/received by the base stations to perform integrated control; and a base station server for executing mirror-updating and restoration of the data stored in the SIM card in response to a request from the mobile communication terminal, wherein the base station server has a data storage unit to which the data stored in the individual SIM card is mirror-updated, and mirror-updates the data in the SIM card to the data storage unit when data is newly stored in the SIM card or the data in the SIM card is updated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A SIM card comprising:
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a memory card comprising a nonvolatile semiconductor memory for storing data and a controller for controlling an operation of the nonvolatile semiconductor memory; and a SIM card adapter in which a secure unit for performing secure communication is provided and to which the memory card is attached, wherein the controller comprises an ID control storage unit which is coupled to each of an external power supply terminal supplied with an external power supply voltage and a read interface terminal used when an ID number is read from an outside and which individually operates independently of the controller with a supply of the power supply voltage via the external power supply terminal when the controller becomes inoperative, to allow the ID number of the memory card to be read via the read interface terminal. - View Dependent Claims (16)
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17. A mobile communication terminal comprising:
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a SIM card in which data including data for determining whether or not wireless communication is usable is stored; an RF communication unit for performing high-frequency power amplification to output a high-frequency signal for performing the wireless communication as well as processing of a signal received by the wireless communication; and a host unit for controlling the SIM card and the RF communication unit, wherein the host unit issues, when data is stored in the SIM card, an update request for requesting mirror-updating of the data to a base station server connected via the wireless communication, and transmits the data to be mirror-updated to the base station server to allow the base station server to mirror-update the data in the SIM card. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method of guaranteeing data using a wireless communication system comprising:
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a mobile communication terminal including;
a SIM card in which data including data for determining whether or not wireless communication is usable is stored;
an RF communication unit for performing high-frequency power amplification to output a high-frequency signal for performing the wireless communication as well as processing of a signal received by the wireless communication; and
a host unit for controlling the SIM card and the RF communication unit;a plurality of base stations each for emitting an electric wave from the mobile communication terminal or transmitting the electric wave to the mobile communication terminal, and securing a wireless communication line between itself and the mobile communication terminal with which the base station is in communication; a wireless network control unit for intensifying the electric waves transmitted/received by the base stations to perform integrated control; and a base station server for executing mirror-updating and restoration of the data stored in the SIM card in response to a request from the mobile communication terminal, the method comprising the steps of; causing the host unit to perform wireless communication with the base station server when updating of the data in the SIM card is completed, and issue the request for the mirror-updating of the update data stored in the SIM card; and causing the base station server to mirror-update, to the data storage unit, the data stored in the SIM card and transmitted from the host unit in response to the request from the host unit, and back up the data stored in the SIM card. - View Dependent Claims (26)
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Specification