KR20040006984A - System and method for informing location - Google Patents

Abstract

PURPOSE: A position information system and a method for providing position information are provided to transmit the position information of a calling target as a character message of a cellular phone by using a simple structure for sending GPS coordinates to radio frequencies. CONSTITUTION: A position information system includes a GPS pager(100), a cellular phone(10), and a position information service portion(40-70). The GPS pager(100) is used for producing and transmitting GPS coordinates corresponding to a present position by satellite signals when receiving a radio frequency call signal. The cellular phone(10) is used for transmitting a signal to request the position information of the GPS pager(100), receiving a character message about the position information of the GPS pager(100), and displaying the received character message. The position information service portion(40-70) transmits a call signal to call the position information to the GPS pager(100), searches the geography information according to the GPS coordinates, and transmitting the searched geography information.

Description

System and method for providing location information {System and method for informing location}

The present invention relates to a system and method for providing location information, and more particularly, to a location information providing system and method for searching for location information of a call target through wireless and providing the form in the form of a text message that can be confirmed by a mobile phone terminal. .

In general, since the Global Positioning System (“GPS”) technology allowed civilian reception at the US Department of Defense in 1985, the application of location tracking through GPS satellites has been rapidly developed.

Furthermore, on May 2, 2000, the position accuracy was improved by about 10 times and the error range was improved to within 20M by releasing SA (Selective availability), an artificial error signal according to the US Department of Defense's policy.

Recently, a variety of devices and services for providing location information by combining GPS-based technology with high positioning accuracy and the latest information and communication technology have been developed and spread.

The GPS terminal developed according to this trend displays about 10 kinds of coordinate information and time information received from a plurality (approximately four or more) of GPS satellites on the LCD screen to display the position of the user carrying the GPS terminal. It is represented by a coordinate number.

Since the coordinate values obtained by the GPS terminal are information consisting only of numbers, an additional device or service that can convert these numerical values into desired geographic information is required.

Recently, a navigation system used for guiding a road in a vehicle, a ship, or an aircraft is a representative example. A GPS receiver for generating GPS coordinates and a geographic information system for providing geographic information according to the GPS coordinates; &Quot;) are combined to display a map on a predetermined display screen and to display a current location, a route to a destination, and the like on the map.

As another example, when a user enters a GPS coordinate obtained through a GPS terminal by accessing an Internet website, an Internet service that displays corresponding geographic information through a web document, and a GPS function by accessing an Internet website operated by a mobile communication service company When an identification number of a personal portable terminal device (for example, a mobile phone terminal) having a built-in is provided, an Internet service for checking a location of the personal portable terminal device and displaying it through a web document is provided.

However, the navigation system as described above has a problem in that the structure of the navigation system is complicated and expensive, and the remote person cannot track the location of the other party, and the geographical information is displayed through the Internet website. The service providing the information has a problem in that it is inconvenient to use and the location of the other party cannot be tracked in the state of being unable to access the Internet (eg, while moving).

Accordingly, the present invention has been made to solve the problems of the prior art as described above, when the user enters the identification number of the object to be called by telephone connection by transmitting the location information of the call object to the text message of the mobile phone It is an object of the present invention to provide a system and method for providing location information that is simple in configuration, yet simple, and readily available regardless of place and environment.

1 is a schematic configuration diagram of a system for providing location information according to an embodiment of the present invention;

FIG. 2 is a schematic block diagram of a GPS pager shown in FIG. 1;

3 is a schematic diagram showing a signal flow between the devices shown in FIG.

<Explanation of symbols for the main parts of the drawings>

10: mobile phone terminal 20, 90: base station

30, 40: communication network 40: telephone answering device

50: server 60: geographic information providing means

70: text message service device 100: GPS pager

110: GPS receiver 120: control unit

130: memory 140: RF transceiver

The position information providing system according to a preferred embodiment of the present invention for achieving the above object, calculates GPS coordinates corresponding to the current position by a signal from a plurality of satellites when the call signal of the radio frequency is received; A GPS pager for transmitting the calculated GPS coordinates as a signal of a radio frequency, a signal for requesting the location information of the GPS pager over a telephone connection by radio frequency communication, and a radio for the location information of the GPS pager A mobile phone terminal receiving and displaying a text message of a frequency and a call signal for calling location information to the GPS pager in response to a request signal of the mobile phone terminal, and receiving a GPS message received from the GPS pager. Of the place where the GPS pager is located Location information service means for retrieving information and transmitting the retrieved geographic information to the mobile phone terminal in the form of a text message; and wireless communication relay means for relaying wireless communication between the pager, the mobile phone terminal, and the location information service means. Characterized in that configured to include.

A method for providing location information according to a preferred embodiment of the present invention for achieving the above object comprises the steps of a user making a call using a cellular phone terminal to connect to location information service means for serving location information, and the user wants to make a call. Keying the identification number of the pager and the information of the mobile phone terminal to receive the information through a mobile phone terminal and transmitting the key to the location information service means, wherein the location information service means calls the pager called by the user. A step of transmitting a signal for calling at a radio frequency through a wireless communication relay means, and a GPS pager corresponding to a current position by signals transmitted from a plurality of satellites by a GPS pager receiving a radio frequency call signal; And calculate the GPS coordinates And transmitting geographic information corresponding to the current position of the GPS pager according to the GPS coordinates received by the location information service means through the wireless communication relay means from the GPS pager in the form of a text message. And a step of providing a geographic information text message transmitted to the mobile phone terminal, and displaying a geographic information text message received from the location information service means on the mobile phone terminal through a display window.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a system for providing location information according to a preferred embodiment of the present invention. As can be seen from the drawings, the system for providing location information according to the present invention includes a mobile phone terminal 10 and a plurality of mobile phone terminals. The base station 20 for the cellular phone terminal, the first communication network 30, the automatic telephone answering device 40, the server 50, the geographic information providing means 60, the text message service device 70 and the second communication network 80 ) And a plurality of GPS pagers 90 and GPS pagers 100.

The mobile phone terminal 10 is a device for performing a telephone connection through the base station 20 and the first communication network 30 and receiving and displaying a text message including geographic information. , CDMA, GSM900, DCS1800, PCS1900, etc.) can be used to carry out a telephone call and receive a short text message by using a wireless communication method according to the present invention.

The plurality of mobile phone base stations 20 transmit and receive communication signals of a radio frequency with the mobile phone terminal 10, and the first communication network 30 is a communication network for mobile phones, wired and wireless communication lines and various Repeaters and exchangers.

The Automatic Response System (hereinafter, abbreviated as "ARS") 40 provides a pre-recorded guide voice in response to the cellular phone terminal 10 connected through the communication network 30. In addition, the mobile phone terminal 10 transmits the identification number input through the key input to the server 50.

The server 50 generates a call signal for calling the corresponding PS pager 100 according to the identification number of the GS pager 100 received through the ARS 40 and receives the GPS received from the pager pager 100. (Global Positioning System) Text message service device to control the geographic information providing means 60 by the coordinates to retrieve the geographic information of the corresponding character type and to transmit the retrieved geographic information of the character type to the mobile phone terminal (10) Control 70.

The geographic information retrieval means (hereinafter, abbreviated as "GIS") 60 receives the GPS coordinates from the server 50 and converts the coordinates into geographic information retrieval coordinates. Character information is retrieved from the embedded geographic information database according to coordinates for information retrieval and provided to the server 50. Here, the GIS 60 may be embedded in the server 50 or installed separately from the outside. The GIS 60 may be hardware or software or some hardware and some software.

The geographic information database embedded in the GIS 60 may have a table structure in which, for example, geographic information retrieval coordinates are connected to geographic information in the form of a character corresponding to each coordinate.

The Short Message Service (hereinafter, abbreviated as "SMS") 70 is a communication network 30 in the form of a text message to the geographic information retrieved by the GIS 60 under the control of the server 50. ) And the base station 20 are transmitted to the mobile phone terminal 10.

The second communication network 80 is a communication network for the GPS pager 100, and includes a wired / wireless communication line, various relay devices, and a switching device, and according to the system configuration of the operator performing the present invention, The communication network 80 may be the same as the first communication network 30 described above or may be a communication network used in common.

The plurality of GPS pager base stations 90 transmits / receives a radio frequency communication signal with the GPS pager 100, and the GS pager base station 90 is the same as or shared with the mobile phone base station 20 described above. It may be a base station used as.

The GPS pager 100 (hereinafter, abbreviated as " GPS pager ") is a GPS corresponding to a current position by signals transmitted from a plurality of GPS satellites GS when a radio frequency call signal is received from the base station 90. By calculating the coordinates and transmitting the calculated GPS coordinates as a radio frequency signal, as can be seen with reference to FIG. 2, the GPS receiver 110, the controller 120, the memory 130, and the RF transceiver 140. It consists of.

The GPS receiver 110 generates GPS coordinates by the signals transmitted from the plurality of GPS satellites GS and applies them to the controller 120.

The control unit 120 compares the identification number included in the call signal received through the RF transmission and reception unit 140 with the identification number stored in the memory 130, and if they match, the GPS generated by the GPS receiver 110 The coordinates and the identification number stored in the memory 130 are applied to the RF transceiver 140.

The memory 130 stores a unique number of the GPS pager 100 and may be, for example, a ROM or a flash memory.

The RF transceiver 140 converts a radio frequency call signal received from the base station 90 into a wired signal and inputs it to the controller 120, and wirelessly converts the GPS coordinates and the identification number applied from the controller 120. The signal is converted into a frequency signal and transmitted to the base station 90.

An operation example of the present invention configured as described above will now be described in detail with reference to the accompanying drawings.

First, when the user inputs the number of the GPS pager to call to the mobile phone terminal 10 and selects a call, the mobile phone terminal 10 is connected to the base station 20 and the communication network according to the number of the GPS pager input by the user. 30, a telephone connection is made to the ARS 40, and the number of the GPS pager input by the user is input and stored in the ARS 40 (S10).

Here, the number that the user inputs to call the GPS pager 100 may be, for example, an identification station number of the service provider (for example, "013") + a unique identification number of the GPS pager, or a unique identification number of the GPS pager. It may be in the form of a configuration or a unique identification number of the GPS pager + a specific designation number for identifying the call service.

The ARS 40 provides a pre-recorded guide voice for guiding the user to input the identification number of the mobile phone terminal to which the location information is to be provided to the mobile phone terminal 10 connected to the phone (S20).

At this time, when the user interrupts the telephone connection of the cellular phone terminal 10 or inputs a predetermined designation code for canceling the service through the cellular phone terminal 10, the ARS 40 terminates the connection with the cellular phone terminal 10. Done.

If the user inputs the identification number of the cellular phone terminal to which the location information is to be provided according to the voice guidance of the ARS 40 to the cellular phone terminal 10, the identification number input by the user is the cellular phone terminal 10. From the base station 20 and the first communication network 30 is transmitted to the ARS 40 (S30).

The ARS 40 receives the identification number of the GPS pager received in step S10 and the mobile phone received in step S30 when an identification number of the mobile phone terminal to receive location information is received from the mobile phone terminal 10. The identification number of the telephone terminal is transmitted to the server 50 (S40).

The server 50 stores the identification number of the GPS pager and the identification number of the cellular phone terminal transmitted from the ARS 40 in a predetermined storage device, and then stores a call signal including the stored identification number of the GPS pager in the predetermined storage device. The communication network 80 and the base station 90 are transmitted to the GPS pager 100 through S50.

The call signal transmitted from the server 50 is converted into a form of radio frequency at the base station 90 and received by the GPS pager 100, and the call signal of the radio frequency received by the GPS pager 100 is an RF transceiver ( In step 140, the signal is converted into a wired signal and input to the controller 120.

The control unit 120 compares the identification number included in the call signal input from the RF transmission / reception unit 140 with the unique identification number stored in the memory 130, and if both match, the current position from the GPS receiver 110 Obtain the GPS coordinates corresponding to and apply the obtained GPS coordinates and the identification number stored in the memory 130 to the RF transceiver 140 (S60).

The GPS coordinates and identification numbers applied from the controller 120 are converted into radio frequency signals by the RF transceiver 140 and transmitted to the base station 90.

The radio frequency signal transmitted from the RF transceiver 140 of the GPS pager 100 is converted into a wired signal at the base station 90 and transmitted to the server 80 via the second communication network 80 (S70).

The server 80 recognizes the GPS coordinates and the identification number by the signal received from the GPS pager 100, and transfers the recognized GPS coordinate values to the GIS 60 (S80).

In the GIS 60, the GPS coordinates received from the server 80 are converted into coordinates for searching for geographic information (S90), and the GPS pager 100 is matched with the coordinates of the geospatial database by converting the converted coordinates for searching for geographic information. Search for geographic information (eg, “Chungmuro 3-ga Far East Building”, etc.) in the form of a text for the point where the location is located (S100).

Next, the GIS 60 transmits the retrieved geographic information in the form of text to the server 50 (S110), and the server 50 stores the geographic information in the text form received from the GIS 60 and in a predetermined storage device. The identification number of the mobile phone terminal 10 is transmitted to the SMS 70 (S120).

The SMS 70 converts geographic information in a text form transmitted from the server 50 into a text message and transmits the text information to the cellular phone terminal 10 via the first communication network 30 and the base station 20 (S130). ).

The geographic information text message transmitted from the SMS 70 is received by the base station 20 by the mobile phone terminal 10 in the form of radio frequency, and the mobile phone terminal 10 receives the geographic information text in the form of radio frequency. The message is displayed on the display screen for the user to view (S140).

Meanwhile, in the above-described embodiment of the present invention, the case where the position of the GPS pager is tracked only by the GPS coordinates using the GPS satellite has been described, but it is difficult to receive the GPS satellite signal according to the weather and the topography. Since it is sometimes difficult to track the position of the pager, another embodiment of the present invention includes a configuration that can additionally track the position of the GPS pager in addition to the GPS coordinates.

The hardware configuration according to another embodiment of the present invention is basically the same as that shown in FIG. 1, but the GPS pager 100 further transmits a radio frequency signal including its own unique identification number every set period. The base station 90 of the plurality of base stations 90 performing radio frequency communication with the GPS pager 100 and the three base stations 90 around the originating position of the GPS pager 100 from the GPS pager 100. It is configured to transmit the information on the strength and identification number of the received signal and the location information of each base station to the server 50 via the second communication network (80).

And, if the GPS coordinates are not received until the set time has elapsed from the calling GPS pager 100, the server 50 starts from three base stations 90 around the origin of the GPS pager 100. Calculate the position of the GPS pager 100 by triangulation according to the received identification number of the GPS pager, the strength of the signal, and the location information of each base station, and control the GIS 60 according to the calculated position information to control the GPS. Configured to retrieve the geographic information of the pager 100. Here, the triangulation method described above is a technique known to the public well known in the art, a separate description will be omitted.

Meanwhile, according to another embodiment of the present invention, in addition to the triangulation method, the approximate cell range of the base station 90 closest to the originating position of the GPS pager 100 is set as the location information of the GPS pager 100. It is configured to.

Such a hardware configuration of another embodiment of the present invention is also basically the same as that shown in FIG. 1, but the GPS pager 100 transmits a radio frequency signal including its own unique identification number at each setting period. The base station 90 is closest to the originating position of the GPS pager 100 among the plurality of base stations 90 performing radio frequency communication with the GPS pager 100, that is, the strength of the received signal is strongest. Is configured to transmit the cell location information of the base station 90 to the server 50 via the second communication network (80). Alternatively, the cell position information of each base station 90 is stored in the server 50 in advance, and the base station 90 closest to the originating position of the GPS pager 100 may receive an identification number for identifying the base station. Can be configured to transmit).

And, if the GPS coordinates are not received until the set time has elapsed from the calling GPS pager 100, the server 50 according to the information received from the base station 90 closest to the originating position of the GPS pager 100. Set the position of the pager 100 within the cell position of the base station 90 and control the GIS 60 according to the set position information of the GPS pager 100 to retrieve the geographic information of the GPS pager 100. .

The present invention is described above by illustrating specific embodiments, but the present invention is not limited to the above embodiments. Those skilled in the art can easily make various changes and modifications to the present invention, and it should be noted that such variations or modifications are included within the scope of the present invention as long as the features of the present invention are used.

As described above, the present invention is configured to transmit the location information of the call destination in the text message of the mobile phone when the user inputs the identification number of the call to be called by the telephone connection. The present invention has the effect that it is easy to use and can be easily provided with the location information of the call object regardless of the place and environment.

In addition, the present invention has a simple structure in which the GPS pager possessed by the calling target transmits the GPS coordinates in the form of radio frequency according to the call signal, compared to a conventional navigation system, a GPS terminal, a mobile phone with GPS functions, and the like. The price is much lower. In addition, mobile phone terminals, wireless communication relay means, telephone answering devices, text message service devices, and servers, which are the main components of the system, can utilize the infrastructure used in the existing mobile communication system. The construction cost is relatively very cheap and easy to install.

The present invention, logistics, transportation, such as freight, transportation, transportation, and the like, infants, children and children to prevent the loss, management, personnel and organizational management of the company's sales personnel and employees at all times tracking, defense, intelligence And information sectors.

Claims (12)

In the location information providing system, A GPS pager for calculating a GPS coordinate corresponding to a current position by a signal transmitted from a plurality of satellites, and transmitting the calculated GPS coordinates as a signal of a radio frequency when a radio frequency call signal is received; A mobile phone terminal which transmits a signal for requesting the location information of the GPS pager through a telephone connection by radio frequency communication and receives and displays a text message of the radio frequency with respect to the location information of the GPS pager; Sends a call signal for calling location information to the GPS pager in response to a request signal of the cellular phone terminal, and retrieves geographic information of a place where the GPS pager is located according to GPS coordinates received from the GPS pager. Location information service means for transmitting information to the cellular phone terminal in the form of a text message; And a wireless communication relay means for relaying wireless communication between the pager and the mobile phone terminal and the location information service means. The GPS receiver of claim 1, further comprising: a GPS receiver for generating GPS coordinates by signals transmitted from the plurality of satellites; A storage unit storing unique identification numbers; A control unit for outputting GPS coordinates generated by the GPS receiver and an identification number stored in the storage unit if the identification number included in the received call signal matches the identification number stored in the storage unit; Converts a radio frequency type call signal received from the wireless communication relay means into a wired signal and inputs it to the controller, and converts a GPS coordinate and an identification number output from the controller into a radio frequency signal. Position information providing system, characterized in that configured to include a radio frequency transceiver. The method of claim 1, wherein the location information service means, A telephone answering device for providing voice guidance to the cellular phone terminal connected by a telephone connection and receiving an identification number of a GPS pager to be called from the cellular phone terminal and an identification number of the cellular phone terminal; Generates a call signal for calling the corresponding PS pager according to the identification number of the PS pager received through the telephone answering machine, receives the GPS coordinates from the called GPS pager, and receives the GPS coordinates. Server for generating a control signal for transmitting the geographical information according to the mobile phone terminal, Receives GPS coordinates from the server, converts them into coordinates for geographic information retrieval, and retrieves geographic information in a text form from the geographic information database according to the converted coordinates for geographic information retrieval. Sudan (GIS), And a text message service device for transmitting the geographical information retrieved by the geographic information retrieval means (GIS) to the mobile phone terminal through the wireless relay means in the form of a text message according to a control signal generated from the server. Location information providing system characterized in that. The system of claim 3, wherein the geographic information database has a table structure in which coordinates for retrieving geographic information are connected with geographic information in a text form corresponding to each coordinate. The method of claim 1, wherein the GPS pager further performs the operation of transmitting a radio frequency signal including its own unique identification number every set period, The wireless communication relay means receives a radio frequency signal transmitted from the GPS pager through three neighboring base stations around the originating position and displays the strength of the received signal of each of the three base stations and the location information of each base station. Perform further operations provided by the information service means, The location information service means, if the GPS coordinates are not received until the set time has elapsed from the calling pager, the strength of the outgoing signal received by the corresponding pager provided from the wireless communication relay means to the neighboring three-point base station. And calculating the position of the GPS pager by triangulation according to the location information of each base station, and performing a control operation for retrieving the geographic information of the place where the GPS pager is located based on the calculated position information. Location information providing system. The method of claim 1, wherein the GPS pager further performs the operation of transmitting a radio frequency signal including its own unique identification number every set period, The wireless communication relay means further performs the operation of providing the cell location information of the base station receiving the radio frequency signal transmitted from the GPS pager to the location information service means, If the GPS information is not received until the set time has elapsed from the calling GPS pager, the location information service means determines the position of the GPS pager according to the cell location information of the base station provided from the wireless communication relay means. And setting the cell range within the cell range to perform a control operation for retrieving geographic information accordingly. In the location information providing method, A step in which a user makes a phone call using a cellular phone terminal and connects to a location information service means for serving location information; A key for inputting the identification number of the pager to which the user wants to call and the identification number of the mobile phone terminal to receive the information to the location information service means by key input through the mobile phone terminal; Transmitting, by the location information service means, a signal for calling a GPS pager called by the user at a radio frequency through a radio communication relay means; The GPS pager receiving the radio frequency call signal calculates the GPS coordinates corresponding to the current position by signals from a plurality of satellites, and transmits the GPS coordinates as the radio frequency signal. and, The location information service means transmits geographic information corresponding to the current position of the GPS pager in the form of a text message to the cellular phone terminal according to the GPS coordinates received from the GPS pager through a wireless communication relay means. Geographic information character providing step, And displaying the geographic information text message received from the location information service means through the display window in the mobile phone terminal. The geographic information providing step of claim 7, wherein in the geospatial information providing step, the GPS coordinates received from the GPS pager are converted into geographic information retrieval coordinates, and geographic information is converted from a geographic information database according to the converted geographic information retrieval coordinate. A method of providing location information, characterized by retrieving information and providing a user with geographic information retrieved from this geographic information database. The method of claim 8, wherein the geographic information database has a table structure in which coordinates for retrieving geographic information are connected with geographic information in a text form corresponding to each coordinate. 8. The method of claim 7, wherein the GPS pager transmits a radio frequency signal including its own unique identification number at each setting period; The wireless communication relay means receives a radio frequency signal transmitted from the GPS pager through three base stations around its origin, and indicates the strength of the received signal of each of the three base stations and the location information of each base station. It further comprises the step of providing to the information service means, If the GPS information is not received until the set time has elapsed after transmitting the paging signal to the GPS pager, the location information service means receives the neighboring three-point base station from the corresponding GPS pager provided from the wireless communication relay means. And calculating the position of the GPS pager by triangulation according to the strength of the outgoing signal and the location information of each base station, and performing the step of providing the corresponding geographic information. 8. The method of claim 7, wherein the GPS pager transmits a radio frequency signal including its own unique identification number at each setting period; And providing, by the wireless communication relay means, cell location information of the base station which has received the radio frequency signal transmitted from the GPS pager to the location information service means. If the GPS information is not received until the set time has elapsed after the paging signal is transmitted to the GPS pager, the location information service means determines that the GPS pager is based on the cell location information of the base station provided from the wireless communication relay. And setting a location within a cell range of the base station to provide geographical information according to the location. 12. The mobile telephone terminal according to any one of claims 7 to 11, wherein the cellular phone terminal is connected to a telephone answering device provided in the location information service means when the telephone is connected, and the location information according to the voice guidance of the answering machine Location information providing method characterized in that it is configured to input the identification number of the mobile phone terminal to be provided.