Subscriber identification module and transmission method and system based on subscriber identification module

Abstract

The invention relates to a subscriber identification module and a transmission method and system based on the subscriber identification module. The subscriber identification module comprises a bus, a processing module and a storage module, wherein the processing module and the storage module are connected with the bus. The subscriber identification module further comprises a short distance wireless communication controller, a short distance wireless communication module and a radio frequency antenna, wherein the short distance wireless communication controller is connected with the bus; the short distance wireless communication module is connected with the short distance wireless communication controller; the radio frequency antenna is connected with the short distance wireless communication module; and the short distance wireless communication controller is used for controlling the short distance wireless communication module to carry out data interaction with an external entity through driving the radio frequency antenna, writing the data which is received by the short distance wireless communication module from the external entity into the storage module through the processing module, and reading the data through the processing module from the storage module, wherein the data is sent to the external entity by the short distance wireless communication module. In the invention, the high-speed data exchange between an external entity and the subscriber identification module can be supported without needing to chang a terminal.

Description

technical field [0001] The invention relates to the communication field, in particular to a subscriber identification module and a transmission method and system based on the subscriber identification module. Background technique [0002] Subscriber Identity Module (such as SIM card) is a highly secure smart card widely used in the field of mobile communications. The internal structure of the user identification module is as follows: figure 1 As shown, it mainly includes bus, CPU (microprocessor unit), RAM (random access memory), ROM (read-only memory, generally used to store fixed program code) and EEPROM (non-volatile memory), of which EEPROM is generally used For storing data, according to different processes, FLASH is widely used instead to store key data and user information related to the subscriber identification module. Currently, the common subscriber identity module communicates with the terminal through a standard ISO7816 interface. [0003] With the continuous...

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Problems solved by technology

[0005] Among them, the problem of the ISO7816 interface is that the transmission speed is slow, the maximum transmission speed is only 310Kbps, which cannot really meet the actual needs of users for large-capacity data transmission, and after a long transmission time, it will exceed the waiting time limit of the terminal, and some terminals will crash, etc. Phenomenon, resulting in machine card incompatibility, poor user experience and low acceptability

However, the vast majority of existing terminals do not support this type of interface, and new terminals need to be customized and developed. The cost of terminal software and hardware transformation is very high, the cycle is long, and the cost is high. Terminal manufacturers need to invest huge resources in a large number of terminal design and development. Retrofit; Considering the cost of terminal replacement, only new terminal users that support IC_USB interface or MMC interface can use the subscriber identification module with this type of interface, and the terminal that the user has already purchased or the terminal that is already on the market cannot support it, and the scope of application of the product is limited , difficult to be accepted by most users

[0009] Even if the terminal supports the data transmission of the large-capacity subscriber identity module after the transformation, it cannot realize the data exchange of any content between the terminal and the subscriber identity module (such as: Business cards, multimedia, e-books, etc.), only designated applications or services can be exchanged through the IC_USB interface or MMC interface, which limits the application range of large-capacity subscriber identification modules and seriously hinders the promotion and development of large-capacity subscriber identification modules. It can be seen from the actual promotion effect of major domestic operators in the past few years. At present, major operators have basically stopped the promotion of large-capacity subscriber identification modules.

[0010] From the perspective of application, the current international standard only defines the high-speed data transmission interface, but does not define the supported applications or services. Therefore, the problem of standardization of terminal applications or services based on traditional large-capacity subscriber identification modules is also very prominent. Personalization is simply used. The terminal method will lead to high costs, and it will be difficult to promote the product

From the perspective of the operator, the operator has complete control over the user identification module, and the terminal has a social channel, and it is difficult to control the terminal, which is not conducive to future technology and function upgrades.

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