SIM card file erasing and writing system and method applied to SoftSIM and readable storage medium

Abstract

The invention discloses an SIM card file erasing and writing system and method applied to SoftSIM and a computer readable storage medium. The system comprises a data management layer, a storage management layer and an application logic layer; the application logic layer exchanges the storage positions of the cold data and the hot data when the communication module chip is powered on, the situationthat in the long-term erasing and writing process, the erasing and writing frequency of the storage area of the hot data is far larger than that of the storage area of the cold data, and consequentlyloss is too fast is avoided, erasing and writing balance of all the storage areas is achieved, and meanwhile, when the SIM card file needs to be updated, the data to be written is cached into the logic page of the memory space; the storage management layer writes the to-be-written data in the logic page into the logic address space formed by the data management layer when the page changing condition is met, and then the data management layer writes the to-be-written data into the FLASH memory of the communication module chip, so that the erasing and writing frequency of the FLASH memory is reduced. By achieving erasing and writing balance and reducing erasing and writing times, the service life of the FLASH memory is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a SIM card file erasing system, method and readable storage medium applied to SoftSIM. Background technique [0002] Nowadays, the number of IoT (Internet of Things, Internet of Things) devices is increasing at an exponential rate. These devices that need to establish interconnection cannot bypass the support of cellular networks, and the use of cellular networks must rely on SIM (Subscriber Identity Module, identity authentication module) card. Faced with such explosive growth, more and more manufacturers have begun to focus on the research and development of SIM cards. Constrained by sensitive price benefits, SIM card manufacturers have gradually begun to deploy soft SIMs, namely SoftSIM. [0003] SoftSIM is a SIM function implemented by pure software relying on the operating system, and does not require the actual physical chip, that is, the existence of a SIM card. I...

AI Technical Summary

Problems solved by technology

At the same time, the SIM card files that implement SoftSIM must also be stored in the FLASH memory of the communication module chip. Some of the SIM card files have a very high update frequency, and may be updated dozens of times or even more times a day. The FLASH memory with only 100,000 times of erasing and writing life will be consumed soon, which will directly cause the communication module equipment to be unusable and scrapped in advance, which seriously damages the interests of equipment manufacturers

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