NFC Device Dynamic Response Time Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current NFC devices operate in a half-duplex communication mode, which is slow due to the inability to predict the time needed for response messages and the need to always request maximum waiting time extensions, leading to inefficient communication.
Innovation Solution
A communication device and method that adjust the second response waiting time span based on the amount of request data, allowing for increased waiting time for larger data sets and reducing waiting time for smaller data sets, enabling accelerated NFC communication by sending a second request message within the initial waiting time span.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If maximum waiting time extensions are always requested in half-duplex NFC communication, then communication reliability is maintained, but communication speed deteriorates
Solution Approach 1:
The patent applies dynamics by making the waiting time span adjustable rather than fixed. The target device dynamically determines the response waiting time span based on its current processing load and complexity, sending this information to the initiator. This allows the system to adapt the waiting time to actual needs, preventing unnecessary delays while ensuring sufficient time for complex operations.
Solution Approach 2:
The patent changes the parameter of waiting time span from a constant maximum value to a variable value. The target device calculates an appropriate waiting time based on processing complexity and communicates this parameter to the initiator, enabling the system to optimize communication speed without sacrificing reliability by using precisely the right waiting time for each interaction.
2Device complexity
If fixed basic response waiting time span is used for all request sizes, then device complexity is reduced, but communication efficiency deteriorates
Solution Approach 1:
The system transitions from a static fixed waiting time to a dynamic adaptive waiting time. The target device assesses its processing requirements and communicates the appropriate waiting time span to the initiator, enabling efficient communication without requiring complex prediction algorithms in either device.
Solution Approach 2:
The patent implements feedback by having the target device send information about its processing requirements back to the initiator. This feedback loop allows the initiator to set an appropriate waiting time based on actual target device needs, optimizing communication efficiency without increasing device complexity.
3Reliability
If initiator waits for maximum waiting time before sending next request, then target device reliability is ensured, but overall communication productivity decreases
Solution Approach 1:
The patent changes the waiting time parameter from a fixed maximum value to a variable value determined by target device processing needs. The target communicates the appropriate waiting time span to the initiator, who then waits only this optimized duration before sending the next request, maintaining reliability while improving overall communication productivity.
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 accelerates NFC communication by optimizing waiting time according to the processing needs of the target device, reducing unnecessary delays and improving communication efficiency.
Implementation Method 1
Near Field Communication (NFC) is a communication technology, which uses an inductive coupling of devices for a wireless interconnection between them
Data Source
AI summary
The present invention relates to a communication device (28) adapted to communicate with at least one second communication device (26) in a half-duplex near-field communication scheme, and to a method of near-field communication. According to the invention the first communication device (28) receives a first request message (30) from the second communication device (26) which is supposed to be answered within a first response waiting time span (bRWT), and which contains an amount of request data. The first communication device (28) sends within the first response waiting time span (bRWT) a second request message (34) to the second communication device (26), the second request message (34) representing a request for a second response waiting time span (RWT(m)) for providing a first response message (32) in reply to the first request message (30). According to the invention, the first communication device (28) ascertains a value of the requested second response waiting time span (RWT(m)), such that the value of the requested second response waiting time span (RWT(m)) generally increases with the amount of request data.