NFC Module USIM Command Routing via Baseband Chip
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Near Field Communication (NFC) technologies face challenges in controlling mobile terminal functions, such as ringtone, camera, and communication settings, due to limitations in communication between the RF area of a Universal Subscriber Identity Module (USIM) and the mobile terminal's contact section, preventing effective command transmission for function restrictions.
Innovation Solution
A mobile terminal equipped with an NFC module comprising an RF antenna, an NFC tag circuit, and an NFC main chip, configured to receive and transmit RF signals at 13.56 MHz, allowing data forwarding to the baseband chip or USIM for authentication and mode control, enabling commands from an external RF reader to activate or deactivate functions like silent ringtone, camera restriction, and communication zone grouping modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the RF area of the USIM directly transmits the result value to the RF reader, then the communication speed is improved, but the contact section cannot perform communication with the mobile terminal
Solution Approach 1:
The patent introduces an intermediary communication path through the baseband chip and contact section. When the RF reader sends commands to the USIM, the USIM forwards these commands through the baseband chip to the contact section, which then communicates with the mobile terminal. This intermediary path allows the USIM to maintain direct RF communication while still enabling reliable contact section communication through the baseband chip routing.
2Adaptability or versatility
If the USIM receives commands from the RF reader, then the command processing capability is improved, but the command cannot be transmitted to the mobile terminal
Solution Approach 1:
The patent implements a feedback mechanism where the USIM receives commands from the RF reader, processes them, and then transmits the processed commands to the mobile terminal through the baseband chip. The mobile terminal can also send feedback responses back through the same path, ensuring that command information is not lost and that the system can verify successful command execution.
3Reliability
If the NFC module forwards data to the baseband chip or USIM, then the authentication function is improved, but the device complexity increases
Solution Approach 1:
The patent makes the baseband chip serve multiple functions: it acts as both the mobile terminal's baseband processor and as a communication relay between the USIM and the mobile terminal. This multi-functionality reduces the need for separate dedicated components, thereby reducing overall device complexity while maintaining strong authentication capabilities through the USIM.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure and efficient control of mobile terminal functions by authenticating the device and processing mode-control commands from an external RF reader, ensuring compliance with set modes and releasing functions as needed, enhancing operational control and user experience.
Implementation Method 1
an RF antenna configured to receive, from an external RF reader, a command RF signal in 13.56 MHz and further configured to transmit, to the external RF reader, a responsive RF signal in 13.56 MHz
Data Source
AI summary
Disclosed herein is a mobile phone with the Near Field Communication (NFC) technology and method of operating the mobile phone. The mobile phone includes a display; a baseband chip; a near field communication (NFC) module comprising an RF antenna, an NFC tag circuit and an NFC main chip; and the RF antenna configured to receive incoming RF signals.