Title:
SYNCHRONIZATION DETECTION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/128159
Kind Code:
A1
Abstract:
Provided by the present invention are a synchronization detection method and device. The method comprises: acquiring a synchronization code in a frame signal and determining a reference synchronization code and a calibration synchronization code; and determining a start position of the frame signal by using frame synchronization detection. Clock calibration and/or carrier frequency calibration are performed on the basis of the reference synchronization code and the calibration synchronization code. During the clock calibration process, by means of selecting a calibration clock that has the optimal synchronization performance in a preset calibration clock interval as a calibration clock of the frame signal, an accumulative clock error inside of the frame signal is calibrated, so that the problem of erroneous determination caused by the accumulative clock error may be solved. During the carrier frequency calibration process, synchronization codes distributed in different positions of the frame signal are used to obtain carrier frequency sampling points at different positions of the frame signal, and the obtained carrier frequency sampling points are used to predict or fit the change trend of the carrier frequency of the entire frame signal, so that the problem of degraded determination performance caused by frequency drift within the frame may be solved.
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Inventors:
LU JIA (CN)
ZHANG JIANGONG (CN)
MA HEMING (CN)
HUA FUNING (CN)
FU JIABIN (CN)
ZHANG JIANGONG (CN)
MA HEMING (CN)
HUA FUNING (CN)
FU JIABIN (CN)
Application Number:
PCT/CN2019/128652
Publication Date:
July 01, 2021
Filing Date:
December 26, 2019
Export Citation:
Assignee:
HARBIN HYTERA TECH CORP LTD (CN)
International Classes:
H04L27/26
Foreign References:
| CN111163027A | 2020-05-15 | |||
| CN106656453A | 2017-05-10 | |||
| CN104579566A | 2015-04-29 | |||
| CN107911206A | 2018-04-13 | |||
| US20150373624A1 | 2015-12-24 | |||
| EP3403382A1 | 2018-11-21 | |||
| US20190268031A1 | 2019-08-29 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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