Title:
IMPROVED OFDM RANGING USING POSITION REFERENCE SYMBOL PHASE
Document Type and Number:
WIPO Patent Application WO/2021/041309
Kind Code:
A3
Abstract:
Improved approaches for use of RF signals (e.g., OFDM signals) for determining a range that can be used for geolocation of a device. The disclosure includes systems and methods that may allow for transition from a correlation approach to a group delay approach. In addition, upon detection of the presence of multipath error in a signal, a signal bandwidth may be increased to as to include additional position reference symbols (PRS) that are included in a determination of a propagation delay, and in turn, a range. In addition, use of a different number of symbols in a signal based on signal SNR is presented.
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Inventors:
KURBY CHRISTOPHER NEIL (US)
LEE RICHARD M (US)
LEE RICHARD M (US)
Application Number:
PCT/US2020/047628
Publication Date:
April 15, 2021
Filing Date:
August 24, 2020
Export Citation:
Assignee:
IPOSI INC (US)
International Classes:
G01S13/00; G01S5/02; H04W24/08
Foreign References:
| US20080137524A1 | 2008-06-12 | |||
| US20130156120A1 | 2013-06-20 | |||
| US20110033002A1 | 2011-02-10 | |||
| US20170085396A1 | 2017-03-23 |
Attorney, Agent or Firm:
DEPPE, Jon, P. (US)
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