NFC Dynamic Parameter Negotiation for Energy Efficiency
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Solution Overview
Problem
Conventional NFC devices continue to provide unmodulated data communication after information transfer, leading to unnecessary battery depletion, temperature rise, security compromise, and interference, due to fixed communication parameters that cannot be adjusted for advanced processing needs.
Innovation Solution
A method for dynamically negotiating communication parameters between NFC devices, including modulated and unmodulated data communication durations and power levels, allowing for optimal power and duration adjustments based on the requirements of the target device for efficient information exchange and advanced processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional NFC devices continue to provide unmodulated data communication after information transfer, then the target device can reliably receive and process information, but unnecessary energy is consumed, temperature rises, security is compromised, and interference is created
Solution Approach 1:
The patent implements a feedback mechanism where the target device sends a signal back to the source device to indicate whether information transfer is complete. The source device monitors this feedback and terminates unmodulated data communication accordingly, eliminating unnecessary energy consumption while ensuring reliable transfer.
Solution Approach 2:
The patent makes the communication duration dynamic by allowing the source device to adjust the length of unmodulated data communication based on real-time conditions and feedback from the target device, rather than using a fixed predetermined duration.
2Device complexity
If conventional NFC devices use fixed communication parameters, then the system is simple to implement, but it cannot adapt to advanced processing needs requiring different power and duration settings
Solution Approach 1:
The patent introduces dynamic parameter adjustment where communication duration and power levels are negotiated between devices based on their specific processing needs, enabling adaptability while maintaining implementation simplicity through standardized negotiation protocols.
Solution Approach 2:
The patent performs parameter negotiation before actual information transfer, allowing devices to agree on appropriate communication parameters in advance based on their capabilities and requirements, thus enabling adaptability without complicating the core transfer mechanism.
3Reliability
If the source device provides unmodulated data communication for extended duration, then the target device has sufficient time to harvest power and process information, but unnecessary interference is created for other proximate communication devices
Solution Approach 1:
The target device provides feedback to the source device indicating when sufficient power has been harvested and information processing is complete, allowing the source device to terminate unmodulated communication timely and avoid creating unnecessary interference for other devices.
Solution Approach 2:
The patent implements just-enough communication duration where the source device provides unmodulated communication for the minimum necessary time to ensure successful power harvesting and information transfer, avoiding excessive duration that would cause interference.
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 dynamic negotiation optimizes communication parameters, ensuring sufficient power and duration for efficient data transfer and processing, reducing unnecessary energy consumption and interference, while enabling more advanced processing capabilities.
Implementation Method 1
This magnetic field inductively couples onto a second conventional NFC device that is proximate to the first conventional NFC device
Data Source
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AI summary
An apparatus and method is disclosed to negotiate communications parameters between near field communications (NFC) capable devices (102, 104). In some embodiments, the NFC capable devices operate in a negotiation phase to negotiate one or more communications parameters prior to transferring information. In other embodiments, the NFC capable devices simultaneously negotiate the one or more communications parameters with the transferring of the information.