Wireless interface between communication terminal equipment and SIM (Subscriber Identity Module) card and function implementation

Abstract

The invention belongs to the field of communication terminal equipment, and provides a wireless transmission protocol for connecting mobile communication terminal equipment (mobile phone for short) with a subscriber identity module (SIM) card. The wireless transmission protocol is characterized in that (1) mobile phone interface equipment is arranged on a mobile phone side, and communicates with the mobile phone through an ISO-7816 protocol; SIM card interface equipment is arranged on an SIM card side, and communicates with the SIM card through the ISO-7816 protocol; the mobile phone interface equipment communicates with the SIM card interface equipment through the wireless transmission protocol; and (2) forward error correction (FEC) and a transmission protocol data unit (TPDU) of the wireless transmission protocol are provided, so that a wireless transmission interface is transparent for contact communication between a conventional mobile phone and the SIM card, and both the mobile phone and the SIM card are unaware of the presence of the wireless transmission interface therebetween.

Description

technical field [0001] The invention belongs to the field of communication terminal equipment. Specifically, the present invention relates to a wireless transmission interface protocol applicable between a communication terminal device and a subscriber identity module card, and at the same time, also relates to a device and a method for specifically realizing the wireless communication transmission interface protocol. Background technique [0002] At present, mobile communication user equipment is mainly composed of communication terminal equipment (including mobile phones, mobile fixed phones, tablet computers, notebook computers, desktop computers, smart home equipment such as smart TVs, home media centers such as set-top boxes, and home network centers such as routers. For simplicity, Hereinafter referred to as mobile phone) and subscriber identity module card (including SIM card of GSM system, UIM card of CDMA system, USIM card of 2G, 3G and 4G system. For simplicity, he...

AI Technical Summary

Problems solved by technology

[0047] 2) At the same time, if another device wants to access the wireless communication network through the authentication information of the same SIM, in the view of the network, there is already a user in the network, and the relevant unique billing information and service authorization are obtained. But at this time, if a new user requests to use the same billing information and service authorization, the network will cause confusion and be at a loss

[0048] 3) Since multiple devices are connected to the wireless communication network at the same time, when there is a message or data (for example, an incoming call or data download) on the network side that needs to be transmitted to the user, it is impossible to determine which device the data is transmitted to

[0049] 4) In fact, through the "collision" attack of the authentication encryption algorithm A38, the early SIM card may be guessed to the user authentication key Ki and copied (the current SIM card cannot be copied due to the strengthening of security) , the same SIM card may be copied into multiple identical SIM cards and used by multiple devices at the same time, accessing the wireless communication network

[0051] Therefore, multiple devices connected to the wireless communication network through the method of invention application 201210266545.8 cannot be supported in the existing network, and are not allowed by the network service provider

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