Title:
TERMINAL SPEED ESTIMATION METHOD USING DOPPLER SPECTRUM
Document Type and Number:
WIPO Patent Application WO/2017/163989
Kind Code:
A1
Abstract:
Provided is a moving speed estimation method that detects the occurrence of Doppler spectrum components that are from peripheral moving scatterers. A moving speed estimation method that includes: a step for calculating a Doppler spectrum; a step for calculating a maximum Doppler frequency; a step for determining a first moving speed for a terminal from the maximum Doppler frequency; and a step for comparing the first moving speed with a second moving speed for the terminal that was determined a prescribed amount of time earlier and, when the first moving speed is at or below the product of the second moving speed and a first coefficient, for determining the first moving speed to be a present moving speed.
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Inventors:
MAITI SOURABH (JP)
FUJII TERUYA (JP)
FUJII TERUYA (JP)
Application Number:
PCT/JP2017/010028
Publication Date:
September 28, 2017
Filing Date:
March 13, 2017
Export Citation:
Assignee:
SOFTBANK CORP (JP)
International Classes:
G01S11/10
Foreign References:
| JP2014232081A | 2014-12-11 | |||
| JP2006126018A | 2006-05-18 | |||
| JP2016130692A | 2016-07-21 | |||
| US20050267370A1 | 2005-12-01 |
Other References:
SOURABH MAITI ET AL.: "An Investigation on Velocity Estimation of Mobile Terminal for Cellular Mobile Radio Communication Systems", IEICE TECHNICAL REPORT, vol. 114, no. 395, 15 November 2015 (2015-11-15), pages 31 - 36
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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