NFC Tag Registers for Reliable Protocol Handover
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Solution Overview
Problem
Existing wireless communication technologies face challenges in ensuring efficient, secure, and reliable data transfer, particularly in near-field communications, where data loss or corruption can occur due to distance or other factors, and existing solutions do not effectively manage the transition between communication protocols.
Innovation Solution
The implementation of a wireless communication system that uses NFC protocol to store and transmit NDEF message data, with registers to indicate read status and last byte data, triggering a host device to transition between communication modes, ensuring complete data transfer before switching to a different communication protocol, such as Wi-Fi or Bluetooth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wireless communication distance is increased, then coverage area is improved, but data reliability deteriorates due to data loss or corruption
Solution Approach 1:
The communication process is segmented into two distinct phases: NFC phase for reliable近距离 data transfer and Wi-Fi/Bluetooth phase for extended range communication. This segmentation allows each protocol to operate in its optimal range, with NFC ensuring data integrity at short distances and Wi-Fi/Bluetooth providing broader coverage, thereby resolving the contradiction between coverage area and data reliability
Solution Approach 2:
The system performs preliminary data transfer and verification through NFC communication before transitioning to Wi-Fi or Bluetooth. By completing critical data exchange in the reliable NFC phase and verifying successful transfer, the system ensures data integrity before relying on longer-range protocols, thus maintaining reliability while expanding coverage
2Ease of operation
If communication protocol transition is automated, then ease of operation is improved, but device complexity increases due to protocol management
Solution Approach 1:
The system implements self-service through automatic protocol detection and transition. The device autonomously determines when to switch from NFC to Wi-Fi/Bluetooth based on communication status and data transfer completion, eliminating the need for manual user configuration. This automation improves ease of operation while the complexity is managed through standardized protocol handover mechanisms
Solution Approach 2:
The NFC protocol serves as an intermediary that facilitates the transition between devices before establishing Wi-Fi or Bluetooth connections. This intermediary role simplifies the overall system complexity by providing a standardized, reliable initial connection method that automatically prepares the devices for subsequent protocol transitions, reducing the burden on the final communication system
3Reliability
If data transfer is verified for completeness, then data reliability is improved, but communication time increases due to verification processes
Solution Approach 1:
The system applies partial verification through the NFC phase, confirming critical data transfer completion before full transition to Wi-Fi/Bluetooth. This partial action approach verifies essential data integrity without requiring complete end-to-end verification across all protocols, thereby maintaining high reliability while minimizing additional communication time through efficient staged verification
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
This approach ensures secure and reliable data transfer by confirming complete data access before transitioning to a different communication protocol, preventing data loss and corruption, and facilitating seamless handover between communication phases.
Implementation Method 1
NFC (Near Field Communication) is a type of contactless communications (e.g., for identification and networking technologies) that involves short-range wireless technology
Data Source
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AI summary
Near-field communication (NFC) is effected in a manner that ensures that messages are read. In accordance with one or more embodiments, an apparatus includes a NFC antenna, a NFC tag and a host connected to the NFC tag via both a data communication circuit and a field detection circuit. The NFC tag stores and transmits an NFC data exchange format (NDEF) message via the NFC antenna. The NFC tag includes first and second registers respectively having data indicative of a read status of the NDEF message and data indicative of a last portion/byte of the NDEF message data. When the NDEF message is accessed (e.g., transmitted), the NFC tag sets the data in the first register to indicate that the NDEF message has been read (e.g., sets a bit value). The trigger circuit generates a trigger signal in response to the status, indicating that the NDEF message has been read.