NFC IBC Mode Switching via Invitation Message Detection
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Solution Overview
Problem
Existing NFC and IBC communication technologies require separate terminals and lack compatibility, making it inconvenient for users to perform contactless transactions using the same mobile device in both modes without disrupting standard NFC communications.
Innovation Solution
A method and device that enable a mobile terminal equipped with both NFC and IBC capabilities to switch between modes by receiving an invitation message, detecting the communication type, and establishing a pairing request over a distinct return channel, allowing for secure and efficient communication in either NFC or IBC mode without interfering with standard NFC operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile terminal is equipped with both NFC and IBC capabilities, then communication versatility is improved, but device complexity increases and mode switching conflicts occur
Solution Approach 1:
The mobile terminal is designed to support both NFC and IBC communication modes using the same hardware infrastructure. The NFC module can operate in either NFC mode (for direct terminal-to-terminal communication) or IBC mode (for body channel communication), allowing a single device to perform multiple communication functions without requiring separate dedicated hardware for each mode.
Solution Approach 2:
The system implements dynamic mode switching capability where the mobile terminal can automatically or manually transition between NFC mode and IBC mode based on the communication scenario. The terminal detects the appropriate mode through invitation messages and switches its operational state accordingly, enabling flexible adaptation to different communication requirements without manual configuration.
2Ease of operation
If IBC mode is activated on a mobile terminal, then physical proximity requirements are relaxed, but compatibility with standard NFC communications may be disrupted
Solution Approach 1:
Before establishing IBC communication, the system performs preliminary detection by receiving and analyzing an invitation message that indicates the desired communication type. This preliminary action allows the terminal to prepare the appropriate communication mode in advance, ensuring that standard NFC protocols are maintained when needed and preventing potential conflicts before they occur.
Solution Approach 2:
The invitation message serves as an intermediary mechanism that mediates between NFC and IBC communication modes. By detecting the communication type through this intermediate message, the system can determine whether to proceed with standard NFC communication or switch to IBC mode, thereby maintaining compatibility with existing NFC standards while enabling enhanced functionality.
3Reliability
If a pairing request is transmitted over a distinct return channel for IBC mode, then communication security is improved, but device complexity and protocol complexity increase
Solution Approach 1:
The communication channel is segmented into distinct paths: the near-field channel for receiving invitation messages and the separate return channel for transmitting pairing requests. This segmentation allows secure pairing authentication to occur over a dedicated channel while keeping the main communication flow on the near-field channel, enhancing security without requiring complete protocol redesign.
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 seamless compatibility between NFC and IBC modes on a single mobile terminal, allowing for secure and efficient contactless transactions, including data transfer, while maintaining compatibility with existing NFC standards and reducing the need for physical proximity to the reader terminal.
Implementation Method 1
a mobile terminal equipped with a near-field communication module... to receive a message in an electromagnetic field over a near-field channel
Implementation Method 2
receiving, from a terminal, called reader terminal, set to reader mode, a message inviting communications according to a type of near-field communication
Data Source
AI summary
A method and device for adapting a communication from a mobile terminal equipped with a near-field communication module. The mobile terminal is able to be placed in NFC mode or in IBC mode to carry out contactless transactions. It is able to receive a message in an electromagnetic field over a near-field channel. The method includes, on the mobile terminal, the following steps: receiving, from a terminal placed in read mode, called the reader terminal, a message inviting to open communications according to a type of near-field communication; detecting a type of near-field communication in the received invitation message; if the type of communication indicates an IBC communication, and the mobile terminal is placed in IBC mode, sending a pairing request over a return channel distinct from the near-field channel.