Invention Application
- Patent Title: Wireless Device Ranging
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Application No.: US15566751Application Date: 2015-04-17
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Publication No.: US20180084515A1Publication Date: 2018-03-22
- Inventor: Enrico RANTALA , llari TEIKARI , Jarkko KNECKT , Mika KASSLIN , Janne MARIN , Olli ALANEN
- Applicant: Nokia Technologies Oy
- International Application: PCT/FI2015/050268 WO 20150417
- Main IPC: H04W56/00
- IPC: H04W56/00 ; G01S11/08 ; H04L27/26 ; G01S5/14

Abstract:
A method and apparatus for detecting, by a first device, a timing measurement frame from a second device, the timing measurement frame having a plurality of time measurement samples, wherein at least the first of the measurement samples has a transmit timestamp value; determining transmit timing values for the subsequent measurement samples; applying a receive timestamp value to each of the received measurement samples; and determining a relative clock drift between a clock of the first device and a clock of the second device by comparing the receive timestamp values with transmit timing values of one or more measurement samples contained in the frame.
Public/Granted literature
- US10560912B2 Wireless device ranging Public/Granted day:2020-02-11
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