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Title:
TRANSMITTING AND RECEIVING METHODS FOR DIFFERENTIAL CORRECTION DATA, SYSTEM, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/244560
Kind Code:
A1
Abstract:
The present application relates to the field of positioning, and discloses transmitting and receiving methods for differential correction data, a system, and a device. The differential correction data comprises a first, second, third, and fourth model polynomial coefficient of an oblique ionospheric correction algorithm model. The transmitting method comprises: a service end acquiring an ionospheric data range and a resolution of a current region; the service end separately determining, according to the ionospheric data range and the resolution of the current region, a bit length for at least one of the second, third, and fourth model polynomial coefficient; and the service end sending, according to the determined bit length, the at least one of the second, third, and fourth model polynomial coefficient to a user terminal. Embodiments of the present application perform customized arrangement and compression on differential correction data to reduce a large amount of transmission costs and time. In addition, the simplified data prevents an increase in the bit error rate caused by attenuation of a geosynchronous satellite signal transmitted across a long distance.

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Inventors:
ZHAO YUANYI (CN)
Application Number:
PCT/CN2020/094234
Publication Date:
December 10, 2020
Filing Date:
June 03, 2020
Export Citation:
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Assignee:
QIANXUN SPATIAL INTELLIGENCE INC (CN)
International Classes:
G01S19/07; G01S19/41
Domestic Patent References:
WO2019063379A12019-04-04
WO2019095122A12019-05-23
Foreign References:
CN109802757A2019-05-24
CN107861131A2018-03-30
CN109061676A2018-12-21
Other References:
QUALCOMM INCORPORATED: "Running LPP CR for PPP-RTK support (SSR)", R2-1906782, 3GPP TSG-RAN WG2 MEETING #106, vol. RAN WG2, 13 May 2019 (2019-05-13), XP051730238
SWIFT NAVIGATION: "Considerations on GNSS SSR assistance data for NR Posi- tioning", R2-1906809, 3GPP TSG-RAN WG2 MEETING #106, vol. RAN WG2, 13 May 2019 (2019-05-13), XP051730264
Attorney, Agent or Firm:
XU & PARTNERS, LLC. (CN)
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