Signal generation method, apparatus, communication system

By performing phase rotation on the OOK waveform of the LP-WUS signal, the problems of low detection accuracy and efficiency of the LP-WUS signal in frequency-selective channels are solved, and efficient signal detection and energy consumption optimization are achieved in NR reception.

CN122372382APending Publication Date: 2026-07-10CHINA TELECOM CORP LTD TECHNOLOGY INNOVATION CENTER +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA TELECOM CORP LTD TECHNOLOGY INNOVATION CENTER
Filing Date
2023-07-24
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In wireless communication, the detection accuracy and efficiency of low-power wake-up signals (LP-WUS) are relatively low. Especially in channel environments with strong frequency selectivity, the high power consumption and signal distortion of existing OFDM receivers and OFDM demodulators make it difficult to accurately detect LP-WUS signals.

Method used

By performing phase rotation on the first OOK waveform of the LP-WUS signal generated based on the OOK-Option 4 scheme, and processing it with a sequence containing multiple phase rotation factors with the same magnitude and phase changing according to a preset rule, the frequency diversity gain of the LP-WUS signal is improved, and energy loss of the signal in the frequency selective fading channel is avoided.

Benefits of technology

It improves the detection accuracy and efficiency of LP-WUS signals, reduces energy loss, ensures good signal performance in frequency-selective fading channels, and meets the requirements of power-saving design.

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Abstract

The application belongs to the technical field of wireless communication and terminal, and relates to a signal generation method, device, communication, system storage medium and electronic equipment. The method comprises the following steps: generating a first binary keying signal OOK waveform based on a low-power wake-up LP-WUS signal; and performing phase rotation on the first OOK waveform by using a sequence containing a plurality of phase rotation factors with the same modulus and a preset rule of phase change, so as to obtain a phase-rotated OOK waveform. According to the application, the frequency diversity gain of the LP-WUS signal is improved by performing phase rotation on the time-domain signal corresponding to the LP-WUS signal, so that the LP-WUS signal has strong anti-fading capability, and the detection rate and detection accuracy of the LP-WUS signal are improved.
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