Sim card file rewriting system, method and readable storage medium applied to softsim

Abstract

A SIM card file erasing system, method, and computer-readable storage medium applied to SoftSIM, the system includes a data management layer, a storage management layer, and an application logic layer; the application logic layer exchanges cold storage when the communication module chip is powered on The storage location of data and hot data avoids that during the long-term erasing process, the number of times of erasing and writing of the storage area of ​​hot data is much greater than that of the storage area of ​​cold data, resulting in excessive loss, and realizes the erasing and writing of each storage area Balanced, and at the same time, when the SIM card file needs to be updated, the data to be written is cached into the logical page of the memory space; the storage management layer writes the data to be written in the logical page into the logic formed by the data management layer when the page change condition is met In the address space, the data to be written is written into the FLASH memory of the communication module chip by the data management layer, thereby reducing the number of erasing and writing of the FLASH memory. The service life of the FLASH memory is effectively improved by realizing erasing and writing balance and reducing the number of times of erasing and writing.

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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