US Patent No: 6,845,239

Number of patents in Portfolio can not be more than 2000

Positioning system and position calculating method in mobile communication system

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Abstract

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A positioning system and a position calculating method in a mobile communication system for specifying a position of a mobile station unit on the basis of positional information from three base station units and for displaying related map information on the mobile station unit to utilize the positional information effectively, the position system and the position calculating method in which a position reporting means of a base station unit reports positional information, a distance difference calculating means of the mobile station unit calculates differences in distance between the mobile station unit and three base station units on the basis of the positional information from the three base station units, measures a position of the mobile station unit on the basis of the positional information and the distance differences by using a position measuring means, reports the measured position to an exchange unit by using a position reporting means, and a map information displaying means of the mobile station unit displays related map information reported from the exchange unit.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KOKUSAI ELECTRIC CO., LTD.TOKYO137

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirata, Shinichi Kanagawa, JP 56 260
Oyamada, Ouichi Sapporo, JP 5 171
Sato, Tsuyoshi Yokohama, JP 149 689

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AT&T WIRELESS SERVICES, INC. (1)
5,732,354 Method and apparatus for determining the location of a mobile telephone 149 1995
 
FIPA FROHWITTER INTELLECTUAL PROPERTY AG (1)
6,701,132 Mobile communication system, mobile station, and base station that calculates distance from mobile station 39 2000
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (1)
5,960,355 Method and an arrangement relating to telecommunication systems 35 1997
 
TRIMBLE NAVIGATION LIMITED (1)
5,699,255 Map transmission for in-vehicle navigation system with dynamic scale/detail adjustment 155 1995

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
CISCO TECHNOLOGY, INC. (2)
7,433,696 Wireless node location mechanism featuring definition of search region to optimize location computation 28 2004
7,586,877 Method and system to determine and communicate the presence of a mobile device in a predefined zone 2 2006
 
WI-LAN INC. (2)
8,326,324 Systems and methods for location positioning within radio access systems 1 2008
8,559,982 Systems and methods for location positioning within radio access systems 1 2011
 
ALCATEL-LUCENT USA INC. (1)
7,486,645 Obtaining data rates for mobile stations based on a forward link of a cellular system 14 2005
 
FUJITSU LIMITED (1)
7,561,856 Distortion compensation amplifying apparatus and base station 4 2004
 
HITACHI MAXELL, LTD. (1)
7,072,673 Radio handset and position location system 0 2002
 
HITACHI, LTD. (1)
7,321,575 Node position measuring system 0 2005
 
KYOCERA CORPORATION (1)
6,975,870 Mobile communication terminal 1 2002
 
MESHNETWORKS, INC. (1)
7,830,842 System and method for determining the mobility of nodes in a wireless communication network 1 2005
 
MOTOROLA MOBILITY LLC (1)
8,364,120 Identity verification using location over time information 2 2006
 
NOKIA CORPORATION (1)
7,308,273 Method for determining a location 6 2004
 
ROCKWELL COLLINS, INC. (1)
7,027,822 Distributed GPS for geolocation of a network of nodes 13 2002
 
SAMSUNG ELECTRONICS CO., LTD. (1)
7,446,701 Method and apparatus for tracking location of user equipment by using integrated GPS and TDOA scheme 0 2005
 
SHARP KABUSHIKI KAISHA (1)
7,349,707 Wireless communication apparatus with relative distance estimation means 2 2004
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (1)
7,171,211 Estimating signal strength measurements in a telecommunications system 4 2002
 
Other [Check patent profile for assignment information] (1)
8,521,184 Method for estimating the geographical latitude, longitude and elevation of a mobile electronic telecommunication device (TD) 0 2011

Maintenance Fees

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 18, 2016
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