Signal processing method and apparatus, and terminal device, computer-readable storage medium, computer program product and chip system

By judging the frequency band energy and spectral characteristics within the frequency range of the synchronization signal in the satellite communication system, the effective synchronization signal can be determined, which solves the problem of high missed detection rate of synchronization signal and improves the efficiency of initial cell synchronization.

WO2026107890A1PCT designated stage Publication Date: 2026-05-28CHINA SATELLITE NETWORK APPLICATION CO LTD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
CHINA SATELLITE NETWORK APPLICATION CO LTD
Filing Date
2024-12-10
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

In satellite communication systems, interference signals exist within the frequency range of the synchronization signal, resulting in a high rate of missed detections and low initial cell synchronization efficiency.

Method used

By determining the maximum band energy and sideband energy within the frequency range of the synchronization signal, it is determined whether the band possesses the spectral characteristics of the synchronization signal, thus identifying the effective synchronization signal and performing coarse carrier synchronization and fine timing synchronization.

Benefits of technology

It reduces the missed detection rate of synchronization signals and improves the efficiency of initial cell synchronization.

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Abstract

A signal processing method and apparatus, and a terminal device, a computer-readable storage medium, a computer program product and a chip system. The signal processing method comprises: determining a frequency band corresponding to the maximum frequency band energy within a frequency range for searching for a synchronization signal, and sideband energy corresponding to the frequency band; on the basis of the maximum frequency band energy and the sideband energy corresponding to the frequency band, determining whether the frequency band has spectrum characteristics of the synchronization signal; and in response to the frequency band having the spectrum characteristics of the synchronization signal, determining that the synchronization signal in the frequency band is a valid synchronization signal. The terminal device of the present application can determine the valid synchronization signal by using the spectrum characteristics of the synchronization signal, thereby facilitating a reduction in the missed detection rate of the synchronization signal and improving the efficiency of initial cell synchronization.
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Citation Information

Patent Citations

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    CN113411159A

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  • Channel access for a frequency band

    WO2022207403A1

  • Communication method and apparatus

    WO2024093607A1