RADIO TERMINAL DEVICE, RADIO BASE STATION DEVICE, RADIO RANGING SYSTEM, AND RATIO RANGING METHOD

Title:

RADIO TERMINAL DEVICE, RADIO BASE STATION DEVICE, RADIO RANGING SYSTEM, AND RATIO RANGING METHOD

Document Type and Number:

WIPO Patent Application WO/2010/125767

Kind Code:

A1

Abstract:

Disclosed are a radio terminal device and the like, which achieve an improvement in the accuracy of ranging between a UWB reader and a UWB tag regardless of whether an active method or a semi-passive method. In a terminal (300), a timing control unit (340) outputs, to a transmission amplifier (350), a control signal for performing on-off control such that on the basis of the reception timing of a pulse signal transmitted from a base station (200) and a representative value of a circuit delay time required from when a reception pulse signal is received until a transmission pulse signal generated in response to a detection signal of the reception pulse signal is transmitted, the transmission amplifier (350) amplifies a reradiation pulse generated in response to a detection signal of the pulse signal transmitted from the base station (200) and a re-reradiation pulse generated in response to a detection signal of the reradiation pulse.

Inventors:

MUKAI HIROHITO
FUKAGAWA TAKASHI
NAKAGAWA YOICHI

Application Number:

PCT/JP2010/002848

Publication Date:

November 04, 2010

Filing Date:

April 20, 2010

Export Citation:

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Assignee:

PANASONIC CORP (JP)
MUKAI HIROHITO
FUKAGAWA TAKASHI
NAKAGAWA YOICHI

International Classes:

G01S13/74; G01S7/40; G01S13/75; G01S13/76; G01S13/79

Foreign References:

JPS51117889A	1976-10-16
JP2007212420A	2007-08-23
JP2009109479A	2009-05-21
JP2009270523A	2009-11-19

Other References: