Title:
POSITIONING SUPPORT DEVICE AND POSITIONING SUPPORT METHOD
Document Type and Number:
WIPO Patent Application WO/2013/008782
Kind Code:
A1
Abstract:
The present invention provides approximate positional information including more appropriate error-radius information. According to a positioning method (positioning support method) implemented by a positioning support system (10) and a positioning system (1) that includes the positioning support system (10), the present invention determines whether the error radius, which is included in the positional information (approximate positional information) of a base station device (70) acquired from another mobile communication network (N2), is within a prescribed range and, if the error radius is outside the prescribed range, the error radius is updated to a predetermined value and the approximate positional information including the updated error-radius information is transmitted by a SUPL server (20) to a communication terminal (60) in order to calculate the position thereof. Therefore, the provision of approximate positional information including more appropriate error-radius information for calculating the position of a communication terminal is rendered possible.
Inventors:
SUZUKI TAKASHI (JP)
AOKI TOMOHARU (JP)
KIKKAWA MIHO (JP)
AOKI TOMOHARU (JP)
KIKKAWA MIHO (JP)
Application Number:
PCT/JP2012/067479
Publication Date:
January 17, 2013
Filing Date:
July 09, 2012
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
SUZUKI TAKASHI (JP)
AOKI TOMOHARU (JP)
KIKKAWA MIHO (JP)
SUZUKI TAKASHI (JP)
AOKI TOMOHARU (JP)
KIKKAWA MIHO (JP)
International Classes:
G01S19/06; G01S19/25; H04W64/00
Foreign References:
| JP2010169554A | 2010-08-05 | |||
| JP2010109581A | 2010-05-13 | |||
| JP2011114679A | 2011-06-09 | |||
| JP2008151661A | 2008-07-03 | |||
| JP2008175824A | 2008-07-31 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
Download PDF:
Claims: