Method and system for access service in SIM card by dual-processor terminal

Abstract

The invention discloses a method of a dual-processor terminal accessing services in SIM card, including: an application processor (AP) transmits requests and data transmitted by a network browser in TCP / IP protocol, through AT instruction, to a communication processor (CP ), the CP converting the requests and data transmitted through AT instruction into requests and data transmitted in BIP protocol, and then transmitting the requests and data to the SIM card; the CP transmitting response data returned from the SIM card, in AT instruction, to AP, and then the AP returning the response data in TCP / IP protocol to the network browser. The invention also discloses a system of a dual-processor terminal accessing services in SIM card, including: an SIM card; an AP that contains a web browser, a TCP / IP module, an agent server, a first AT module; and a CP that contains a second AT modules, a task converter and a BIP module. The invention has better versatility and simple processing logic.

Description

technical field [0001] The invention relates to a data exchange technology between a terminal and a Subscriber Identity Module (SIM) card, in particular to a method and a system for a dual-processor terminal to access services in the SIM card. Background technique [0002] Embed the WEB server into the SIM card, and the application program of the terminal can access resources and services on the SIM card through the hypertext transfer protocol (HTTP). Since the HTTP protocol is used to exchange data, a web browser can be used as the user interface of the application. According to the SmartCard Web Server (SmartCard Web Server) standard of the International Organization for Standardization (OMA), the WWW page access address provided by the SIM card to the mobile phone is 127.0.0.1, and different applications can use different ports, for example, near field communication (NFC ) application uses port 3516, that is, the end user only needs to type in the web browser http: / / 127...

AI Technical Summary

Problems solved by technology

[0006] Since the above method needs to access the application of 127.0.0.1 by requesting a local IP address other than 127.0.0.1, and the set local IP address may conflict with the IP address of an application on the network, it is easy to cause the SIM card to Return wrong response data; and the local IP addresses set by different terminals are not the same, so the versatility is poor

At present, there are other solutions by modifying the TCP / IP module so that the entire system can access the service in the SIM card by requesting the local IP address 127.0.0.1, which reduces the possibility of access errors and has better versatility , but because these solutions need to involve the modification of the protocol stack, the processing logic is more complicated

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