RFID Transponder Communication Error Detection via Signal Segmentation
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Solution Overview
Problem
Conventional RFID transponders with limited energy resources face challenges in secure and error-free data transmission due to increased data volume and interference, especially when transmitting data wirelessly using high-frequency electromagnetic fields.
Innovation Solution
An apparatus and system for communicating with a transponder, comprising a transmit apparatus, a receive apparatus, and an evaluation apparatus, which emits a transmit signal with two signal portions, allowing for error detection by evaluating the receive signal based on the transmit signal and a signal portion, enabling secure data transmission and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data are transmitted in a redundant manner to ensure secure data transmission, then data integrity is improved, but energy consumption increases
Solution Approach 1:
The transmit signal is divided into two separate signal portions. The first signal portion carries the actual data, while the second signal portion serves as a reference for error detection. This segmentation allows the receiver to detect errors by comparing the received signal portions without requiring full redundant transmission of all data, thereby reducing energy consumption while maintaining data integrity.
Solution Approach 2:
The second signal portion acts as an intermediary reference signal that enables error detection. Instead of directly transmitting redundant copies of all data, the system uses this reference signal portion as a mediator that allows the receiver to verify data integrity through comparison, reducing the overall energy required for secure transmission.
2Reliability
If the transmit signal includes two signal portions for error detection, then data transmission reliability is improved, but signal complexity increases
Solution Approach 1:
The transmit signal is segmented into two distinct portions: a first signal portion containing the data and a second signal portion serving as a reference. This segmentation enables error detection functionality while maintaining a relatively simple overall signal structure that can be generated and processed using standard communication techniques.
3Reliability
If redundant data transmission is used to overcome interference, then data security is improved, but communication efficiency deteriorates
Solution Approach 1:
By segmenting the transmit signal into two portions with the second serving as a reference for error detection, the system achieves secure data transmission without the overhead of transmitting full redundant copies of all data, thereby maintaining communication efficiency while improving data security.
Solution Approach 2:
Instead of transmitting complete redundant copies of all data (excessive action), the system transmits a partial reference signal portion that is sufficient for error detection purposes. This partial action approach maintains data security while avoiding the efficiency loss associated with full redundant transmission.
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
The solution enables secure and error-free data transmission by detecting data errors in the receive signal, reducing energy requirements for RFID transponders, and extending the communication range while minimizing redundant data transmission.
Implementation Method 1
data are transmitted in a contactless and in particular in a wireless manner, e.g., via electromagnetic waves
Implementation Method 2
the modulated signal is a backscatter signal, so that the signal emitted by the transponder results from a modulation of the transmit signal of the reader received by the transponder
Data Source
AI summary
The invention relates to an apparatus for communicating with a transponder. The apparatus includes a transmit apparatus, a receive apparatus and an evaluation apparatus. The transmit apparatus transmits a transmit signal to the transponder. Based on a signal emitted by the transponder, the receive apparatus receives a receive signal. Based on the transmit signal and/or a signal portion, the evaluation apparatus evaluates the receive signal with respect to data errors. Further, the invention relates to a respective method as well as to a system for communicating.