無線位置決定精度を改善するための方法及び装置

Japanese Patent JP5518914

B2

A method and apparatus to utilize a set of measurements (either partial or compete) to improve the accuracy of an initial position estimate for a wireless terminal. The initial position estimate for the terminal is first obtained (e.g., based on a cell-ID or an enhanced cell-ID solution). Measurements are obtained for the terminal. The initial position estimate is then updated with the measurements to obtain a revised position estimate for the terminal. The updating may be performed by (1) deriving a measurement vector based on the initial position estimate and the measurements, (2) forming an observation matrix for the measurements, (3) determining a matrix of weights, (4) deriving a correction vector based on the measurement vector, the observation matrix, and the weight matrix, and (5) updating the initial position estimate with the correction vector.

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Leonid Scheinblatt
Wyatt Thomas Riley

JP2012023297A

June 11, 2014

February 06, 2012

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QUALCOMM INCORPORATED

G01S5/02; G01S19/06; G01S19/09; G01S19/12; G01S19/23; G01S19/46; H04W64/00; G01S1/00; G01S19/34; G01S19/48

JP2006504110A
JP2001091622A
JP2000227469A
JP2001318136A
JP2001356162A
JP2004523153A
JP2004515767A
JP2004526149A

Kurata Masatoshi
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori

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