Method for storing applied data in telecommunication smart card

A technology for applying data and smart cards, applied in the field of telecommunications smart cards, can solve the problems of inflexible application, danger, and inability to dynamically allocate, etc., and achieve the effect of conveniently storing large-capacity data

Inactive Publication Date: 2007-07-18
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emergence of large-capacity SIM cards has laid the foundation for the realization of complex STK applications, but also created new problems: it is more difficult to manage data related to application services in the card
Such a storage management method will directly bring about two defects: ① When the storage is deleted, the application needs to move a large amount

Method used

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  • Method for storing applied data in telecommunication smart card
  • Method for storing applied data in telecommunication smart card
  • Method for storing applied data in telecommunication smart card

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Embodiment Construction

[0034] Below, the present invention will be described in detail by taking the most widely used SIM card as an example.

[0035] STK application data downloaded based on OTA technology (referred to as STK application) consists of three parts: application header, application body and application tail. Figure 2 shows the basic data structure of the application header. The application header mainly saves data and attributes related to storage and browsing. The application body is the content of the STK application. The application tail mainly saves some additional data. According to different application services, the length of each STK application is also different. A small STK application can be downloaded with one data message, and the largest STK application can be downloaded with 8 data messages.

[0036] In the present invention, STK applications are stored in a set of files called message stacks. Figure 3 shows the basic data structure of the message heap. Among them, ...

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Abstract

A method of storing application data in telecommunication intelligent card includes storing application data in message stack file formed by multiple fixed-length recording file, forming an application data by connecting one or multiple recording file in chain list mode and storing a formed application data in branch at internal of said telecommunication intelligent card, forming said application data by application head and application body as well as application tail, forming a ring form two-way chain list by application data and branch for conveniently seeking out any application data in said branch and said chain list.

Description

technical field [0001] The invention relates to a method for storing application data in a telecommunication smart card, in particular to a method for storing and managing a large amount of application data developed based on smart card application development tools in a telecommunication smart card, belonging to the technical field of telecommunication smart cards. Background technique [0002] Telecom smart card is a general term for all kinds of smart cards (Smart Card) used in the telecommunications field, including SIM cards used in GSM cellular mobile communication systems, UIM cards used in CDMA communication systems, and PIM cards used in PHS communication systems. These cards all have corresponding smart card application development tools, such as STK (SIM TOOL KIT) for SIM cards, UTK application development kit for UIM cards, and PTK application development kit for PIM cards. [0003] Take the currently most widely used SIM card as an example, as shown in Figure 1,...

Claims

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Application Information

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IPC IPC(8): G06F17/30H04Q7/32
Inventor 徐达兴臧宏伟李波王强
Owner BEIJING WATCH DATA SYST
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