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Method for conveying control commands for SIM card from external apparatus to SIM card

A technology for external devices and control commands, applied in the field of smart cards

Inactive Publication Date: 2004-01-14
NOKIA MOBILE PHONES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that the external device can only use selected commands among the commands known to the SIM card control element

Method used

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  • Method for conveying control commands for SIM card from external apparatus to SIM card
  • Method for conveying control commands for SIM card from external apparatus to SIM card
  • Method for conveying control commands for SIM card from external apparatus to SIM card

Examples

Experimental program
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Embodiment Construction

[0047] Figure 4 A block diagram of a preferred embodiment of the present invention is shown. In this example, the system employs two SIM card control elements 4, 10, wherein the first control element 4 is arranged for the communication part 6 of the mobile station 1, and the second control element 10 is arranged for the communication part 6 via the input / output The interface 8 is connected to an external device 12 of the mobile station. exist Figure 4 Among them, the SIM card connected to the SIM card interface 16 includes a memory 21 . Fig. 5 shows an example of the communication method according to the present invention in such a system.

[0048] Figure 5 shows the information exchanged in a preferred embodiment of the method according to the invention. An external device 12 starts using the SIM card 2 by sending a lock command LOCK or other corresponding activation signal to the second SIM card control element 10 for the external device. In response to the lock command...

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Abstract

The method according to the invention can be used for conveying low-level SIM card commands from an external apparatus of a mobile station (1) to a SIM card (2) connected to the mobile station. The invention is based on locking the SIM card (2) solely for a particular control element (10) for the duration of the exchange of low-level commands. The mobile station according to the invention advantageously includes two SIM card control elements (4, 10) the first (4) of which is intended for executing commands issued by internal blocks of the mobile station and the second (10) of which is intended for conveying low-level commands from an external apparatus (12) connected to the mobile station. Said first control element (4) receives high-level commands from the various blocks (6) of the mobile station and conveys to the SIM card (2) the corresponding low-level command sequences. Said second control element (10) reserves the SIM card (2) for itselt, when necessary, whereafter the external apparatus (12) connected to the mobile station can issue low-level commands which are conveyed by said second control element (10) to the SIM card (2). Said second control element (10) frees the SIM card only when the external apparatus indicates that the command sequence has ended. If said first control element (4) receives a command during the command sequence of the external apparatus, the first control element (4) remains waiting and executes the operations required by the command after the SIM card (2) has been released and is no more used by said second control element (10).

Description

technical field [0001] The present invention relates to a smart card connected to a mobile communication device, and more particularly to communication between a device external to the mobile communication device and a smart card connected to the mobile communication device. Background technique [0002] A Subscriber Identity Module, known as a SIM card, is a smart card used in mobile communication devices (such as in mobile stations) within the GSM (Global Digital Mobile Phone) system, which contains subscriber identification information, such as the subscriber's telephone number . The GSM system directs the user's incoming calls to the mobile station where the user's SIM is located. The user can simply change mobile stations by moving the SIM card from one device to another. In addition to the identification information, there are also short messages corresponding to SMS (Storage Management System) services, user private phone numbers and other user-selectable informatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K17/00G06F3/06G06F3/08G06F9/445G06K7/00G07F7/10H04M1/675H04M1/727H04W12/00
CPCG06K7/0086G06K7/0013G06F3/08G06Q20/3578G06Q20/341G07F7/1008G06Q20/229
Inventor M·埃罗拉J·-P·洪卡宁H·霍明恩
Owner NOKIA MOBILE PHONES LTD