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Title:
PHASE DETECTION METHOD AND APPARATUS FOR CLOCK SIGNAL, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/004439
Kind Code:
A1
Abstract:
Provided in embodiments of the present invention are a phase detection method and apparatus for a clock signal, and a communication device. Clock signals of a clock to be detected are sampled according to sampling periods set by a sampling clock; a phase angle value corresponding to a clock signal sampled in a current sampling period is acquired according to the mapping between sampling signals and phase angle values; the phase difference corresponding to the current sampling period is subtracted from the phase angle value to obtain an initial phase value of the clock to be detected in the current sampling period, the phase difference being the phase difference between the clock to be detected and the sampling clock in the current sampling period; and once sampling ends, a final phase value of the clock to be detected may be acquired according to the initial phase value obtained in each sampling period. Since the final phase value is obtained according to the initial phase value obtained in multiple sampling periods, the obtained final phase value has both higher accuracy and better fault tolerance.

Inventors:
LIU JUN (CN)
WEI ZHAOBI (CN)
WANG SHAN (CN)
LEI MENGBI (CN)
ZHANG GUOJUN (CN)
Application Number:
PCT/CN2020/100503
Publication Date:
January 14, 2021
Filing Date:
July 06, 2020
Export Citation:
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Assignee:
ZTE CORP (CN)
International Classes:
H04J3/06
Domestic Patent References:
WO2015096433A12015-07-02
Foreign References:
CN106470428A2017-03-01
Other References:
WANG NING: "Design and Realization of Phase Synchronization Module for Multi-channel Radio Frequency Signal", COMMUNICATIONS TECHNOLOGY, 30 June 2018 (2018-06-30), pages 1487 - 1490, XP055771753, ISSN: 1002-0802, DOI: 10.3969/j.issn.1002-0802.2018.06.044
LU HONGCHAO , ZHAO DONGQING, CHU CHENGQUN, JIAO, XINQUAN: "Application of Non-decreasing Dither and Oversampling Technology in Low Frequency Analog Acquisition System", RESEARCH AND EXPLORATION IN LABORATORY, vol. 38, no. 2, 15 February 2019 (2019-02-15), pages 95 - 98, XP055771767, ISSN: 1006-7167
QUALCOMM INCORPORATED: "Phase and frequency tracking reference signal considerations", 3GPP DRAFT; R1-1711173 PHASE AND FREQUENCY TRACKING REFERENCE SIGNAL CONSIDERATIONS, vol. RAN WG1, 17 June 2017 (2017-06-17), Qingdao, P.R. China, pages 1 - 10, XP051305454
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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