Title:
METHODS AND SYSTEM FOR COLLABORATIVE LOCAL POSITIONING
Document Type and Number:
WIPO Patent Application WO/2020/185291
Kind Code:
A3
Abstract:
Described herein are collaborative local positioning techniques, such as could be used with smart phones, surveying equipment, or other mobile devices. The techniques include independent techniques for distance measurement between devices, the relative positioning of devices, and an absolute orienting of the devices without use of fixed anchor points and through on-will participation of the devices to provide privacy. Distances between devices are determined by use of a sequence of positioning signals, such as a magnetic signal, each of which include an identifier of the transmitting device, the amplitude of the signal as transmitted, and the position of the signal within the sequence. The amplitude of the positioning signal as received is compared to the amplitude as transmitted to obtain a distance.
Inventors:
YIN XIAOTIAN (US)
LI JIAN (US)
LIU YUCEN (US)
LI JIAN (US)
LIU YUCEN (US)
Application Number:
PCT/US2020/012984
Publication Date:
November 12, 2020
Filing Date:
January 09, 2020
Export Citation:
Assignee:
FUTUREWEI TECHNOLOGIES INC (US)
International Classes:
G01S1/04; G01S1/68; G01S5/00; G01S5/02; G01S5/14; G01S11/06
Foreign References:
| US20080102855A1 | 2008-05-01 | |||
| US20170356979A1 | 2017-12-14 |
Attorney, Agent or Firm:
CLEVELAND, Michael G. (US)
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