DFT-s-OFDM and CP-OFDM OOK Signals for IoT Synchronization
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Solution Overview
Problem
IoT devices face challenges in synchronizing with legacy 5G NR signals using traditional on-off keying (OOK) due to their inability to directly read or use these signals, necessitating improved methods for OOK signal generation in wireless communication environments.
Innovation Solution
Implementing OOK signal generation using discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) or cyclic prefix-OFDM (CP-OFDM) waveforms by a reader apparatus, which can transmit these signals to IoT devices, enabling backscattering transmission and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional on-off keying (OOK) is used for IoT device synchronization, then the IoT device can achieve simple modulation and demodulation, but the IoT device is unable to directly use or read legacy 5G NR signals
Solution Approach 1:
The patent introduces a reader apparatus as an intermediary between the legacy 5G NR signal and the IoT device. The reader apparatus generates OOK signals based on the 5G NR signal structure and transmits them to the IoT device, which cannot directly process 5G NR signals. This intermediary converts the incompatible signal formats into a form that the simple IoT device can understand while maintaining compatibility with the existing 5G infrastructure.
2Reliability
If OOK signal generation is implemented using DFT-s-OFDM or CP-OFDM waveforms, then effective synchronization between IoT devices and reader apparatus is achieved, but specification changes are required in wireless communication standards
Solution Approach 1:
The patent designs the OOK signal generation mechanism to be universally compatible with existing 5G NR waveforms (both DFT-s-OFDM and CP-OFDM). The reader apparatus can generate OOK signals that work across different 5G NR configurations and wireless communication standards, making the solution broadly applicable without requiring extensive modifications to each specific standard or deployment scenario.
Data Source
AI summary
Various solutions for on-off keying (OOK) signal generation with respect to reader apparatus and an Internet of Things (IoT) device are described. A reader apparatus may generate an OOK signal with a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform or with a cyclic prefix-OFDM (CP-OFDM) waveform. The reader apparatus may transmit the OOK signal to an IoT device.