Title:
WI-FI POSITIONING METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/274336
Kind Code:
A1
Abstract:
A Wi-Fi positioning method and system. The method comprises: an access point device generating and sending a channel status indication frame; a positioned device receiving the channel status indication frame; the positioned device generating a frequency sweep information frame according to a current channel status indicated by the channel status indication frame, the frequency sweep information frame comprising time-frequency domain resource indication information, wherein the time-frequency domain resource indication information specifies a time-frequency domain resource block; the positioned device sending the frequency sweep information frame; positioning anchor devices receiving the frequency sweep information frame; the positioned device sends a positioning frame on the time-frequency domain resource block specified by the time-frequency domain resource indication information; the positioning anchor devices having received the frequency sweep information frame receives the positioning frame on the time-frequency domain resource block specified by the time-frequency domain resource indication information, and determines, according to the positioning frame, CSI information between each positioning anchor device having received the frequency sweep information frame and the positioned device; and determining the location of the positioned device according to the CSI information. The present invention can complete high-precision Wi-Fi positioning with reduced cost and complexity.
Inventors:
WANG XU (CN)
ZHAN RUI (CN)
MUNG BENJAMIN LEI (CN)
FU YUNSHENG (CN)
ZHAN RUI (CN)
MUNG BENJAMIN LEI (CN)
FU YUNSHENG (CN)
Application Number:
PCT/CN2022/102585
Publication Date:
January 05, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
ESPRESSIF SYS SHANGHAI CO LTD (CN)
International Classes:
H04W4/02; H04W24/08; H04W52/02; H04W64/00
Foreign References:
| CN111867050A | 2020-10-30 | |||
| CN112994858A | 2021-06-18 | |||
| CN110536412A | 2019-12-03 | |||
| CN111148014A | 2020-05-12 | |||
| CN112262322A | 2021-01-22 |
Attorney, Agent or Firm:
BEIJING LUSHENG LAW FIRM (CN)
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