POSITION ESTIMATION SYSTEM
First Claim
1. A position estimation system comprising:
- a mobile communication terminal;
a base station which wirelessly communicates with the mobile communication terminal and which holds its own base station ID that is unique information; and
a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, antenna directivity, and an antenna height of the base station which are associated with the base station ID, wherein the position estimation system estimates a position of the mobile communication terminal located in a radio area of the base station by using the database device,wherein the base station comprises;
an ID transmission section for sending the base station ID to the database device when the mobile communication terminal requests acquisition of the position; and
a relay section for relaying information of an estimated latitude and longitude of the mobile communication terminal which is sent from the database device to the mobile communication terminal requesting the acquisition of the position,wherein the database device comprises;
a calculating section for performing processing for reading the base station information associated with the base station ID from the information table when the base station ID is received, obtaining a latitude and a longitude of a center of a sector that is a gravity center of the sector in the radio area of the base station according to a predetermined calculation using the base station information, and determining the obtained latitude and longitude as the estimated latitude and longitude of the mobile communication terminal; and
a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the relevant base station, andwherein the mobile communication terminal identifies the relayed information of the estimated latitude and longitude of the mobile communication terminal as position information of the latitude and the longitude of the mobile communication terminal.
1 Assignment
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Accused Products
Abstract
A position of a mobile communication terminal in an environment where the terminal cannot communicate with a GPS is defined more narrowly than a sector area of a base station in which the mobile communication terminal is located so that the position of the mobile communication terminal can be estimated more accurately. Even if a mobile communication terminal is in an environment where the terminal cannot communicate with a GPS, the latitude and longitude of the center of a sector of the wireless base station in which the mobile communication terminal is located is obtained according to a predetermined calculation by a base station database device, and the obtained latitude and longitude is sent back as an estimated latitude and longitude of the mobile communication terminal to the mobile communication terminal via the wireless base station.
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Citations
16 Claims
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1. A position estimation system comprising:
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a mobile communication terminal; a base station which wirelessly communicates with the mobile communication terminal and which holds its own base station ID that is unique information; and a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, antenna directivity, and an antenna height of the base station which are associated with the base station ID, wherein the position estimation system estimates a position of the mobile communication terminal located in a radio area of the base station by using the database device, wherein the base station comprises; an ID transmission section for sending the base station ID to the database device when the mobile communication terminal requests acquisition of the position; and a relay section for relaying information of an estimated latitude and longitude of the mobile communication terminal which is sent from the database device to the mobile communication terminal requesting the acquisition of the position, wherein the database device comprises; a calculating section for performing processing for reading the base station information associated with the base station ID from the information table when the base station ID is received, obtaining a latitude and a longitude of a center of a sector that is a gravity center of the sector in the radio area of the base station according to a predetermined calculation using the base station information, and determining the obtained latitude and longitude as the estimated latitude and longitude of the mobile communication terminal; and a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the relevant base station, and wherein the mobile communication terminal identifies the relayed information of the estimated latitude and longitude of the mobile communication terminal as position information of the latitude and the longitude of the mobile communication terminal. - View Dependent Claims (8, 14)
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2. A position estimation system comprising:
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a position request terminal which specifies a terminal ID of any mobile communication terminal and which requests acquisition of a position of the relevant mobile communication terminal; a mobile communication terminal which holds its own terminal ID that is unique information; a base station which wirelessly communicates with the mobile communication terminal as well as communicates with the position request terminal via a relay server, and which holds its own base station ID that is unique information; and a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, an antenna directivity, and an antenna height of the base station which are associated with the base station ID, the position estimation system estimating the position of the mobile communication terminal located in a radio area of the base station by the database device when the acquisition of the position is requested, wherein the base station comprises; a request transmission section for, when position acquisition request information including the terminal ID at a time when the acquisition of the position is requested is received, sending the information to the mobile communication terminal; an ID transmission section for sending the base station ID to the database device when a response signal is received from the mobile communication terminal in response to the request for the acquisition of the position sent by the request transmission section; and a relay section for relaying information of an estimated latitude and longitude of the mobile communication terminal which is sent from the database device to the request terminal requesting the acquisition of the position, wherein the mobile communication terminal comprises an acknowledgement section for sending back the response signal to the base station which has sent the request for the acquisition of the position if the terminal ID included in the position acquisition request information received from the base station is identical to the terminal ID held by the mobile communication terminal, wherein the database device comprises; a calculating section for performing processing for reading the base station information associated with the base station ID from the information table when the base station ID is received, obtaining a latitude, a longitude of a center of a sector that is a gravity center of the sector in the radio area of the base station according to a predetermined calculation using the base station information, and determining the obtained latitude and longitude as the estimated latitude and longitude of the mobile communication terminal; and a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the base station, and wherein the request terminal identifies the relayed information of the estimated latitude and longitude of the mobile communication terminal as position information of the latitude and the longitude of the mobile communication terminal whose position is requested to be acquired.
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3. A position estimation system comprising:
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a mobile communication terminal which holds its own terminal ID that is unique information; a base station which wirelessly communicates with the mobile communication terminal as well as communicates with a position acquisition terminal via a relay server, and which holds its own base station ID that is unique information; and a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, an antenna directivity, and an antenna height of the base station which are associated with the base station ID, the position estimation system estimating a position of the mobile communication terminal by using the database device when the mobile communication terminal notifies the position acquisition terminal of the position of the mobile communication terminal, wherein the mobile communication terminal comprises; a position notification requesting section for requesting to notify the position acquisition terminal of the position of the mobile communication terminal using position notification request information including a position acquisition terminal ID that is unique information of the position acquisition terminal and the terminal ID of the mobile communication terminal, wherein the base station comprises; an ID transmission section for sending the base station ID to the database device when the position notification request information is received; and a relay section for adding the position acquisition terminal ID and the terminal ID of the terminal requesting the position notification request to estimated latitude and longitude information of the mobile communication terminal sent from the database device and sending the estimated latitude and longitude information to the relay server, wherein the relay server comprises a recognition transmission section for recognizing the position acquisition terminal ID included in the estimated latitude and longitude information from the base station and sending the estimated latitude and longitude information to the position acquisition terminal having the recognized ID, wherein the database device comprises; a calculating section for performing processing for reading the base station information associated with the base station ID from the information table when the base station ID is received, obtaining a latitude, a longitude of a center of a sector that is a gravity center of the sector in a radio area of the base station according to a predetermined calculation using the base station information, and determining the obtained latitude and longitude as the estimated latitude and longitude of the mobile communication terminal; and a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the base station, and wherein the position acquisition terminal identifies the estimated latitude and longitude information sent form the relay server as position information of the latitude and the longitude of the mobile communication terminal having the terminal ID of the terminal requesting the position notification request that is included in the estimated latitude and longitude information.
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4. A position estimation system comprising:
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a base station which holds its own base station ID that is unique information; a mobile communication terminal which stores acquired base station IDs that are IDs of a plurality of base stations acquirable through wireless communication; and a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, an antenna directivity, and an antenna height of each base station which are associated with each respective base station ID, the position estimation system estimating a position of the mobile communication terminal located in a radio area of the base station by the database device, wherein the mobile communication terminal comprises an acquired ID transmission section for, in response to a request for acquisition of the acquired base station IDs sent from the base station in response to a request for acquisition of a position of the mobile communication terminal, sending the plurality of acquired base station IDs held by the mobile communication terminal to the base station requesting the acquisition of the acquired base station IDs, wherein the base station comprises; an acquired ID requesting section for requesting acquisition of the acquired base station IDs when the mobile communication terminal requests the acquisition of the position; an ID sending/receiving section for receiving the plurality of acquired base station IDs sent in response to the request for the acquisition request and sending the acquired base station IDs to the database device; and a relay section for relaying information of an estimated latitude and longitude of the mobile communication terminal which is sent from the database device to the mobile communication terminal requesting the acquisition of the position, wherein the database device comprises; a calculating section for performing processing for reading the base station information associated with each of the acquired base station IDs from the information table when the plurality of acquired base station IDs are received, obtaining a latitude, a longitude of a center of a sector that is a center of gravity of the sector in the radio area for each of the base stations having the respective acquired base station IDs according to a predetermined calculation using the base station information, and determining an average of the obtained latitudes and longitudes as the estimated latitude and longitude of the mobile communication terminal; and a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the relevant base station, and wherein the mobile communication terminal identifies the relayed information of the estimated latitude and longitude of the mobile communication terminal as position information of a latitude and a longitude of the mobile communication terminal. - View Dependent Claims (9, 10, 11, 12, 13, 15, 16)
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5. A position estimation system comprising:
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a position request terminal which specifies a terminal ID of any mobile communication terminal and requests acquisition of a position of the relevant mobile communication terminal; a base station which communicates with the position request terminal via a relay server and holds its own base station ID that is unique information; a mobile communication terminal which stores acquired base station IDs that are IDs of a plurality of base station acquirable through wireless communication; and a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, an antenna directivity, and an antenna height of each base station which are associated with each respective base station ID, the position estimation system estimating the position of the mobile communication terminal located in a radio area of the base station by the database device when the acquisition of the position is requested, wherein the base station comprises; a request transmission section for, when position acquisition request information including the terminal ID at a time when the acquisition of the position is requested is received, sending the information to the mobile communication terminal; an ID sending/receiving section for receiving the plurality of acquired base station IDs from the mobile communication terminal in response to the request for the acquisition of the position sent by the request transmission section and sending the plurality of acquired base station IDs to the database device; and a relay section for relaying information of an estimated latitude and longitude of the mobile communication terminal which is sent from the database device to the request terminal requesting the acquisition of the position, wherein the mobile communication terminal comprises a check/transmission section for sending the plurality of acquired base station IDs held by the mobile communication terminal to the base station which has sent the position acquisition request information if the terminal ID included in the position acquisition request information received from the base station is identical to the terminal ID held by the mobile communication terminal, wherein the database device comprises; a calculating section for performing processing for reading the base station information associated with each of the acquired base station IDs from the information table when the plurality of acquired base station IDs are received, obtaining a latitude and a longitude of a center of a sector that is a gravity center of the sector in the radio area for each of the base stations having the respective acquired base station IDs according to a predetermined calculation using the base station information, and determining an average of the obtained latitudes and longitudes as the estimated latitude and longitude of the mobile communication terminal; and a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the relevant base station, and wherein the request terminal identifies the relayed information of the estimated latitude and longitude of the mobile communication terminal as position information of a latitude and a longitude of the mobile communication terminal whose position is requested to be acquired.
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6. A position estimation system comprising:
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a mobile communication terminal which stores its own terminal ID which is unique information and acquired base station IDs which are IDs of a plurality of base stations acquirable through wireless communication; a base station which wirelessly communicates with the mobile communication terminal as well as communicates with a position acquisition terminal via a relay server; and a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, an antenna directivity, and an antenna height of each base station which are associated with each respective base station ID, the position estimation system estimating a position of the mobile communication terminal by the database device when the mobile communication terminal notifies the position acquisition terminal of the position of the mobile communication terminal, wherein the mobile communication terminal comprises a position notification requesting section for requesting to notify the position acquisition terminal of the position of the mobile communication terminal using position notification request information including a position acquisition terminal ID that is unique information of the position acquisition terminal, the acquired base station IDs, and the terminal ID of the mobile communication terminal, wherein the base station comprises a request receiving section for receiving the position notification request information and obtains the acquired base station IDs, the position acquisition terminal ID, and the terminal ID in the information; an ID sending/receiving section for sending the acquired base station IDs obtained by the request receiving section to the database device; and a relay section for adding the position acquisition terminal ID and terminal ID obtained by the request receiving section to estimated latitude and longitude information of the mobile communication terminal sent from the database device and sending the estimated latitude and longitude information to the relay server, wherein the relay server comprises a recognition transmission section for recognizing the position acquisition terminal ID included in the estimated latitude and longitude information from the base station and sending the estimated latitude and longitude information to the position acquisition terminal having the recognized ID, wherein the database device comprises; a calculating section for performing processing for reading the base station information associated with each of the acquired base station IDs from the information table when the plurality of acquired base station IDs are received, obtaining a latitude, a longitude of a center of a sector that is a gravity center of the sector in the radio area for each of the base stations having the respective acquired base station IDs according to a predetermined calculation using the base station information, and determining an average of the obtained latitudes and longitudes as the estimated latitude and longitude of the mobile communication terminal; and a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the relevant base station, and wherein the position acquisition terminal identifies the estimated latitude and longitude information sent form the relay server as position information of a latitude and a longitude of the mobile communication terminal having the terminal ID of the terminal requesting the position notification request that is included in the estimated latitude and longitude information.
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7. A position estimation system comprising:
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a position request terminal which specifies a terminal ID of any mobile communication terminal and requests acquisition of a position of the relevant mobile communication terminal; a base station which communicates with the position request terminal via a relay server and holds its own base station ID that is unique information; a mobile communication terminal which stores acquired base station IDs that are IDs of a plurality of base stations acquirable through wireless communication; and a database device which holds an information table having base station information including a latitude, a longitude, a tilt angle, an antenna aperture angle, an antenna directivity, and an antenna height of each base station which are associated with each respective base station ID, the position estimation system estimating the position of the mobile communication terminal located in a radio area of the base station by the database device when the acquisition of the position is requested, wherein the mobile communication terminal comprises an acquired ID transmission section for sending its own terminal ID associated with the acquired base station IDs to the relevant base station when the mobile communication terminal is located in the radio area of the base station, wherein the base station comprises; an acquired ID receiving section for receiving the acquired base station IDs paired with the terminal ID from the mobile communication terminal; a terminal ID information storage section for storing the received acquired base station IDs paired with the terminal ID; a location checking/ID transmission section for, when position acquisition request information including the terminal ID at a time when the acquisition of the position is requested is received, if the mobile communication terminal having the relevant terminal ID is located in the area of the base station, sending the acquired base station IDs paired with the relevant terminal ID stored by the terminal ID information storage section to the database device; and a relay section for relaying information of an estimated latitude and longitude of the mobile communication terminal which is sent from the database device to the request terminal requesting the acquisition of the position, wherein the database device comprises; a calculating section for performing processing for reading the base station information associated with each of the acquired base station IDs from the information table when the plurality of acquired base station IDs are received, obtaining a latitude, a longitude of a center of a sector that is a gravity center of the sector in the radio area for each of the base stations having the respective acquired base station IDs according to a predetermined calculation using the base station information, and determining an average of the obtained latitudes and longitudes as the estimated latitude and longitude of the mobile communication terminal; and a position transmission section for sending the information of the estimated latitude and longitude of the mobile communication terminal obtained by the calculating section to the relevant base station, and wherein the request terminal identifies the relayed information of the estimated latitude and longitude of the mobile communication terminal as position information of the latitude and longitude of the mobile communication terminal whose position is requested to be acquired.
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Specification