Patent application number | Description | Published |
20090291693 | METHOD FOR ESTIMATING POSITION OF MOBILE TERMINAL IN WIRELESS NETWORK - Provided is a method for estimating a position of a mobile terminal in a wireless network. In the method according to the present invention, difference values between squared signal arrival times of base stations are used to estimate the position of the mobile terminal. | 11-26-2009 |
20100106745 | METHOD AND APPARATUS FOR GENERATING FINGERPRINT DATABASE FOR WIRELESS LOCATION - Provided is a fingerprint database generating method and device for wireless location. Signal strength is estimated by using access points on a numerical map, position coordinates of grid points, and a radio wave attenuation model so as to generate a fingerprint database. A simulation error is computed based on actual survey data measured in the real space, and the estimated signal strength is corrected by using the computed simulation error to thus generate a fingerprint database. | 04-29-2010 |
20100136999 | APPARATUS AND METHOD FOR DETERMINING POSITION OF TERMINAL - An apparatus for determining a position of a terminal calculates distances between a terminal and a plurality of base stations by using time information acquired by a reference station among the plurality of base stations through unidirectional communication between the terminal and the base stations and between the base stations, and determines a position of the terminal by using the calculated distances. | 06-03-2010 |
20100137001 | TERMINAL AND METHOD FOR PROVIDING TERMINAL POSITION - The present invention relates to a terminal and a terminal location providing method. The terminal for selectively accessing a plurality of base stations supporting different communication systems includes a first network interface card that is turned on when the terminal is turned on, a second network interface card that is turned on or activated when receiving the terminal's location information request, a power controller for controlling power of the first and second network interface cards, and a processor for receiving the terminal's location information request and controlling the power of the first and second network interface cards through the power controller. | 06-03-2010 |
20100150061 | Device and method for arranging access point in wireless location - Provided are an access point arrangement device and a method for wireless location determination. An access point is arranged on a numerical map, received signal strength of a signal received from the access point for each grid point is calculated, and DOP and position error per grid point are calculated by using the received signal strength per grid point. It is determined whether to rearrange the currently arranged access point based on a ratio of a grid point with DOP less than a threshold value for entire grid points on the numerical map and a ratio of a grid point with a position error that is less than a threshold value. | 06-17-2010 |
20100166047 | METHOD FOR DETECTING SATELLITE NAVIGATION RECEIVED SIGNAL AND APPARATUS THEREOF - Provided are a method for detecting a received signal and an apparatus for detecting a satellite navigation received signal using the same. The present invention provides cells where a correlation value obtained through parallel signal detection is a predetermined signal detection threshold value or more are selected and time domain correlation is performed on the cells so that the correlation value is verified. The cells having the predetermined verified threshold value or more are detected as a final received signal. | 07-01-2010 |
20100197321 | APPARATUS AND METHOD FOR DETERMINING POSITION - A position determination device calculates a first estimate of positioning information of a terminal based on a non-dynamic model from a measurement value for calculating the positioning information of the terminal. The position determination device calculates a plurality of second estimates of the positioning information of the terminal from the first estimate based on each dynamic model. The position determination device combines the first estimate and the second estimates, and calculates the positioning information of the terminal from the combined value. | 08-05-2010 |
20100238048 | APPARATUS AND METHOD FOR GENERATING LOCATION INFORMATION - An apparatus for generating location information transmits an SUPL INIT message for measuring a location to a target terminal so as to position the target terminal. The target terminal transmits an SUPL POS INIT message including RFID tag information to the apparatus. The apparatus determines a positioning method of the target terminal by using RFID tag information, generates the location of the target terminal according to the determined positioning method, and transmits the location to a service user. | 09-23-2010 |
20100265092 | METHOD FOR DETERMINING LOCATION USING ACCESS POINT, AND APPARATUS THEREOF - The present invention relates to a location measuring method using an access point, and an apparatus using the same. According to the present invention, a location of a terminal is estimated by using a signal strength received from an access point installed at a known position in a wireless network, and location of the access point installed at an unknown position is estimated by using a signal strength received from the access point installed in the unknown position and estimated location information of the terminal. In addition, a location of the terminal is finally calculated by using estimated location information of the access point installed at the known position. As described, the location of the terminal is determined by using estimated location information of an AP that is randomly installed by a user (that is, installed at an unknown position), and therefore a location of an AP installed in an area where it is difficult to measure and availability of location measurement can be improved. In addition, a signal strength measurement value, estimation location information of an AP installed at a known position, and estimation location information of an AP installed at an unknown position are used for location information calculation of a terminal, and accordingly, accuracy of the location measure can be improved. | 10-21-2010 |
20100265093 | METHOD OF AUTOMATICALLY GENERATING FINGERPRINT DATABASE FOR AN INDOOR WIRELESS LOCATION - The present invention relates to a method of automatically generating a fingerprint database for indoor wireless location. For this purpose, the present invention provides a method of generating a fingerprint database that determines a method of calculating the strength of signals transmitted from a plurality of access points, calculates the strength of signals at nodes of a plurality of vertical and horizontal grids set in an indoor space, and generates a database table by using the location information about the nodes and the calculated strength of the signals. Further, the present invention provides an environment analysis tool including a communication module that performs communication between at least one of the access points and a receiving terminal, an environment analysis module that calculates the strength of a signal at a specific location by using a method of calculating strength and generates a fingerprint database table, and a fingerprint database that stores the fingerprint database table. According to the present invention, it is possible to reduce time and manpower required to build a fingerprint database, and to easily build a new fingerprint database even though an indoor structure is changed. | 10-21-2010 |
20110018732 | DEVICE AND METHOD FOR COLLECTING INFORMATION RELATED TO INFRASTRUCTURE, AND POSITIONING METHOD AND SYSTEM USING THE SAME - An infrastructure information collecting device collects measurement information including location information regarding a plurality of wireless access devices disposed in an indoor space based on an indoor map, and a positioning system generates information regarding a wireless communication infrastructure of the corresponding indoor space based on the thusly collected measurement information. The positioning system then provides the generated wireless communication infrastructure information to a terminal of which location is desired to be measured, and then the terminal measures its location based on the wireless communication infrastructure information and signals received from nearby wireless access devices. | 01-27-2011 |
20110064000 | DEVICE AND METHOD FOR MEASURING LOCATION OF TERMINAL - A terminal location measuring device includes a database for storing registration information of a plurality of access points (AP's) forming a first infrastructure system for wireless LAN-based indoor location determination. The terminal location measuring device sets a search range of a database by using location information of the terminal acquired through a second infrastructure system that is different from the first infrastructure system, an identifier of at least one of a plurality of AP's, and a signal measurement value. The terminal location measuring device extracts registration information of an AP having the same identifier as at least one AP within the search range of the database, and measures a location of the terminal by using registration information of the AP. | 03-17-2011 |
20140022107 | METHOD AND APPARATUS FOR MANAGING TRACKING INFORMATION USING UNIQUE ID IN VESSEL TRAFFIC SYSTEM - Disclosed herein are a method and apparatus for managing tracking information using a unique ID in a Vessel Traffic System (VTS). In the method, a multi-sensor integration system issues a unique ID corresponding to a target, and sends a tracking command including the unique ID to radar tracking systems. The multi-sensor integration system receives first tracking information reports corresponding to the unique ID from the radar tracking systems. The multi-sensor integration system generates a second tracking information report by integrating the first tracking information reports using the unique ID. The multi-sensor integration system sends the second tracking information report to a system administrator so that information about tracking of the target is provided to the system administrator. | 01-23-2014 |
20140111368 | METHOD AND SYSTEM FOR MANAGING TRAFFIC CONSIDERING GPS JAMMING - The traffic control method according to the present invention includes obtaining radar information on a target from at least one radar; obtaining AIS information of the target from an AIS (automatic identification system) of the target; detecting GPS jamming; and fusing the radar information and the AIS information. The fusing selectively fuses the AIS information depending on whether the GPS jamming occurs in the position of the target as a result of the detection. | 04-24-2014 |