NFC Transmission Parameter Adaptation After Reception Failure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing NFC devices experience communication failures due to incorrect data reception, leading to increased communication time and adverse user experience.
Innovation Solution
Modify transmission parameters such as modulation amplitude, synchronization frequency, and phase transition durations in response to reception failures to improve data transmission success.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission parameters are kept fixed during NFC communication, then device complexity is reduced, but communication reliability deteriorates due to data reception failures
Solution Approach 1:
The patent implements dynamic adjustment of transmission parameters (modulation amplitude, timing durations, synchronization frequency) based on reception success/failure feedback. The system transitions from static fixed parameters to dynamic adaptive parameters, modifying them in real-time to overcome interoperability issues and improve communication reliability.
Solution Approach 2:
The system employs feedback mechanisms where the receiving device sends acknowledgment frames indicating successful or failed data reception. The transmitting device uses this feedback to determine whether to modify transmission parameters, creating a closed-loop control system that continuously optimizes communication reliability based on actual reception outcomes.
2Reliability
If transmission parameters are modified frequently to overcome reception failures, then communication reliability improves, but loss of time increases due to repeated transmission attempts
Solution Approach 1:
The patent implements a strategy where parameter modification is triggered only after a certain number of failed reception attempts (e.g., after 2 or 3 consecutive failures). This partial action approach avoids excessive parameter changes for every single failure, reducing unnecessary retransmission delays while still improving reliability when genuine communication problems occur.
3Reliability
If modulation amplitude is increased to improve signal strength, then data transmission reliability improves, but use of energy increases
Solution Approach 1:
The modulation amplitude is dynamically adjusted based on reception feedback rather than being set to a constantly high value. The system increases amplitude only when reception failures occur, and maintains lower amplitude during successful communication, thereby improving reliability when needed while minimizing energy consumption during normal operation.
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
Enhances the chances of overcoming interoperability issues, completing data exchanges efficiently, and improving user experience by reducing communication failures.
Implementation Method 1
an amplitude of modulation, by the first device, of an electromagnetic field radiated by the second device
Data Source
AI summary
A first near-field communication device is remotely powered by a second near-field communication device. The first near-field communication device receives from the second near-field communication device a frame indicating a failure of a data reception by the second near-field communication device. In response, at least one transmission parameter of the first near-field communication device is modified prior to another attempt of transmission of the data.