WIRELESS BASE STATION - NTT DOCOMO INC

Title:

WIRELESS BASE STATION

Document Type and Number:

WIPO Patent Application WO/2018/168630

Kind Code:

A1

Abstract:

The purpose of this invention is to improve the estimation accuracy of the direction of a terminal without increasing the number of beam candidates. In a wireless base station (10), a beam selection unit (153) selects, as a transmission beam used in data transmission, the beam candidate having the highest reception quality. A feedback signal processing unit (152) acquires RSS of PRS transmitted from a user terminal, using each of a plurality of positioning beams which include transmission beams. A positioning unit (154) estimates, as the direction of a user terminal, the direction obtained by correcting the direction of the center of a transmission beam using the RSS of each of the measurement beams.

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Inventors:

IWABUCHI MASASHI (JP)
BENJEBBOUR ANASS (JP)
KISHIYAMA YOSHIHISA (JP)

Application Number:

PCT/JP2018/008937

Publication Date:

September 20, 2018

Filing Date:

March 08, 2018

Export Citation:

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Assignee:

NTT DOCOMO INC (JP)

International Classes:

H04B7/06; G01S3/28; G01S5/12; H04B7/0413; H04B7/0456; H04W16/28; H04W64/00

Domestic Patent References:

WO2016013608A1

2016-01-28

Foreign References:

JP2002135032A	2002-05-10
JP2015530018A	2015-10-08
JP2011050043A	2011-03-10

Attorney, Agent or Firm:

WASHIDA, Kimihito (JP)

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