KR20030020537A - GPS Service Method using Mobile Phone - Google Patents

Abstract

PURPOSE: A method for a positioning service using a mobile telephone terminal is provided to utilize time in reading and listening to music without frequently confirming subway stations when a passenger gets on the subway. CONSTITUTION: A passenger of a subway connects to a GIS(Geographic Information System) server(40) of a mobile communication company server through a wireless communication network by using a mobile telephone terminal(10). The passenger searches a location information database(45) of the GIS server(40) for selecting a subway station to get off. Mobile telephone base stations(15,15') receive location coordinates of the passenger from GPS satellites(70) through a GPS receiver of the mobile telephone terminal(10). A location recognition system(60) calculates the distance between the location coordinates of the passenger and the coordinates of the subway station periodically and repeatedly. The location recognition system(60) confirms whether the distance is closed to a previously set distance. If closed, an SMS(Short Message Service) server(50) transmits an alarm and a short message notifying that the subway gets to the subway station to get off.

Description

Location service using mobile phone terminal {GPS Service Method using Mobile Phone}

The present invention relates to a location service method using a mobile phone terminal, and in particular, passengers in the subway using a mobile phone terminal, a GIS (Geographic Information System, GIS) server of a mobile communication company or a location service company. After selecting the subway station to get off and get off, the passenger's location is tracked through the GIS server and SMS (Short Message Service) server of the mobile communication company linked with the mobile phone terminal. The present invention relates to a location service method using a mobile phone terminal for transmitting an alarm and a text message to the mobile phone terminal when a certain distance from the subway station to get off.

In general, GPS technology is used as a positioning method in a wireless mobile communication system. GPS is a technique for transmitting a radio wave from a GPS satellite to a moving object to determine the position of the moving object using a time when the radio wave reaches the moving object, and receiving a GPS signal transmitted from the GPS satellite through a GPS receiver.

In recent years, various types of positioning services have been achieved by integrating the GIS based on the wireless Internet and the communication between the GPS receiver and the mobile phone terminal.

The present invention is a form of a location service method using such GPS technology, the object of which is for passengers using the subway.

In general, the subway has been broadcasting the name of the subway station to get off at every subway station in a pre-recorded comment and displayed on the LCD.

Therefore, passengers using conventional subways have had to check the subway station to get off at any time, and may pass the subway station to get off while doing other work, and thus cannot concentrate on other things such as reading in the subway. There was a problem.

An object of the present invention for solving the above problems is, when the passenger in the subway is connected to the mobile communication company's GIS server using a mobile phone terminal and select the subway station to get off the mobile communication company that is linked with the mobile phone terminal Location service method using a mobile phone terminal to track the location of the passenger through the GIS server and SMS server of the passenger to send an alarm and text message to the mobile phone terminal when the location of the passenger to the subway station to get off To provide.

1 is a block diagram illustrating a location service method according to an embodiment of the present invention

2 is a block diagram schematically showing a mobile phone terminal equipped with a GPS receiver for a positioning service method according to an embodiment of the present invention;

3 is a flowchart illustrating a location service method according to an embodiment of the present invention;

4 is a flowchart for explaining another exemplary embodiment of the distance calculation step of FIG. 3.

※ Explanation of symbols for main parts of drawing

10: mobile phone terminal 15: mobile phone base station

20: base station controller 30: mobile communication company server

40: GIS server 45: geolocation database

50: SMS server 55: text information database

60: location awareness system 70: GPS satellites

A location service method according to the present invention for achieving the above object comprises the first step of a subway passenger connecting to a GIS server of a mobile communication company server or a location service company server through a wireless communication network using a mobile telephone terminal; A second step of selecting a subway station to get off by searching the location information database of the GIS server, and receiving the position coordinates of the subway passenger through the mobile terminal of the subway passenger and distance from the position coordinate of the subway station to get off The third step of calculating the periodic and iteratively and if the calculated distance approached a certain distance and approached a certain distance to the mobile terminal of the subway passenger through the text information database of the SMS server linked to the GIS server And a fourth step of sending alarms and text messages.

The positional coordinates of the subway passengers are preferably provided to the mobile communication company server or the location service company server from the mobile phone base station interworking with the mobile phone terminal.

The mobile telephone base station preferably receives a GPS signal representing the current positional coordinates of the subway passenger from at least three or more GPS satellites via a GPS receiver.

The third step may include receiving position coordinates of a current subway passenger from at least three or more GPS satellites through a GPS receiver mounted on the mobile phone terminal, and a digital signal processing processor interworking with the microprocessor of the mobile phone terminal. (DSP) recognizing the position coordinates through a Digital Signal Processor (DSP), modulating the recognized position coordinates into a radio frequency (RF) signal and transmitting them to a mobile telephone base station; and a base station interworking with the mobile telephone base station. Receiving the position coordinates via a controller and a wireless telecommunication company server location system through the location recognition system and the get-off previously stored in the location information database of the GIS server interlocked with the received location coordinate system Calculating the distance between the position coordinates of the subway stations to be done It may be.

The mobile phone terminal preferably includes a CDMA mobile phone terminal and an IMT-2000 mobile phone terminal.

Preferably, the mobile phone terminal accesses the mobile communication company server through a built-in general-purpose web browser.

Preferably, the location information database stores location coordinates of each subway station.

1 is a block diagram illustrating a location service method according to the present invention. That is, as shown in the figure, firstly, the subway passenger is a mobile communication company server or a location service company server by a communication network interworking with the mobile phone base station 15 and the base station controller 20 through its mobile phone terminal 10. Access the GIS server 40 of 30 to search the location information database 45 and select the subway station to get off. In the location information database 45, names and location coordinates of each subway station are stored in advance. When the subway passenger selects the subway station to get off and terminates the connection with the mobile telecommunication company server 30, the mobile phone base station or the mobile phone terminal 10 having a built-in GPS receiver interworking with the mobile phone terminal 10 being moved Receives the current position coordinates of the subway passengers in real time from at least three or more GPS satellites 70 through the communication network and transmits the position information of the mobile communication company server 30 to the system 60, and the system 60 ) Calculates the distance between the current position coordinate of the subway passenger and the position coordinate of the subway station to get off periodically and repeatedly in association with the position information database 45 of the GIS server 40. If the distance is within a certain distance, the alarm and text messages to the mobile phone terminal 10 via the text information database 55 of the SMS server 50 linked with the GIS server 40 to get off the subway passengers You will be notified that you have become a subway station.

FIG. 2 is a block diagram schematically illustrating a mobile phone terminal equipped with a GPS receiver for a positioning service method according to an embodiment of the present invention. As shown in the drawing, the mobile phone terminal 10 for the present invention includes: GPS receiver 11 for receiving a GPS signal representing the positional coordinates of the current subway passenger from at least three or more GPS satellites, and a universally programmable digital signal processing system for recognizing and determining the positional coordinates in conjunction with the GPS receiver 11. A microprocessor 13 for outputting control signals corresponding to the position coordinates in association with the digital signal processing processor 12 and for arithmetic processing of data transmitted / received in association with the memory unit 14, Digital signal (location coordinates of subway passengers) transmitted to the GIS server 40 of the mobile communication company in cooperation with the microprocessor 13 as an analog signal Modulator / demodulator 15 for demodulating or demodulating analog signals (alarm and text messages) received from SMS server 50 into digital signals, and text messages in conjunction with microprocessor 13 and digital signal processor 12 It includes a display unit 16 for displaying the. In addition, the mobile phone terminal may further include an output unit (not shown) such as a speaker for outputting an alarm.

The GPS receiver 11 is an independent chip, and the digital signal processor 12 having a general-purpose program interworking therewith determines the position by geometric triangulation. That is, GPS signals (preferably, coordinates of latitude and longitude including latitude and longitude) from at least three GPS satellites with known location are received to determine the user's location through the time of arrival of the radio wave, and the mobile communication network and wireless It transmits the position coordinates to the mobile communication company server through the internet network.

The GPS receiver 11 may include an RF / IF converter for converting an RF signal, which is a GPS signal from a GPS satellite, into an intermediate frequency (IF) signal, and the GPS signal is a C-DMA L-band carrier wave. Is preferably.

The GPS receiver may be mounted in a mobile telephone base station system to transmit a GPS signal indicating a current position coordinate of the mobile telephone terminal from the GPS satellite to a mobile communication company server or a location service company server. Therefore, the positioning service is possible even with a general mobile phone terminal currently used. In addition, it is possible to receive the position coordinates from the GPS satellites using a multimedia data terminal (MDT) chip in place of the GPS receiver.

The configuration of the mobile phone terminal equipped with the GPS receiver of FIG. 2 may be modified by those skilled in the art and uses the aforementioned known GPS technology.

3 is a flowchart illustrating a location service method using a mobile phone terminal according to an embodiment of the present invention. That is, as shown in the figure, a passenger using a subway first accesses a GIS server of a mobile communication company or a positioning service company through his mobile phone terminal (S100), searches for a location information database of a GIS server, and gets himself off. If a station to be selected is selected (S101), the position coordinates of the subway passengers are received from the mobile phone terminal, and the distance from the subway station coordinates to get off is periodically and repeatedly calculated (S102). Also, by checking whether the distance between the positional coordinates of the subway passenger and the coordinates of the subway station to get off approaches a predetermined distance (S103), when approaching the predetermined distance, the subway passenger is connected to the GIS server through an SMS server. The mobile phone terminal transmits an alarm and a text message indicating that the subway station to get off (S104). If no distance has been approached, the process returns to step 102 for distance calculation and repeatedly calculates the distance between the position coordinates of the current subway passenger and the position coordinate of the subway station the passenger will get off.

The location coordinates of the subway passenger may be provided from a mobile phone base station interworking with the mobile phone terminal, and the mobile phone base station receives a current location coordinate of the mobile phone terminal received from at least three GPS satellites through a GPS receiver. A GPS signal is displayed. That is, the mobile phone base station receives a GPS signal from the GPS satellite through a GPS receiver in conjunction with a mobile phone terminal, determines (recognizes) a position coordinate, and then transmits it to a mobile communication company server or a location service company server.

4 is a flowchart illustrating still another embodiment of the step 102 for calculating the distance, using a mobile phone terminal equipped with a GPS receiver. First, position coordinates indicating the current position of the subway passenger are received from at least three or more GPS satellites through a GPS receiver mounted on the mobile terminal of the subway passenger (S200). The position coordinate signal received through the GPS receiver is recognized through a digital signal processing processor linked to a microprocessor (S201), and the microprocessor outputs a control signal corresponding to the recognized position coordinate signal to output a modulator / demodulator. After modulating the RF signal through the mobile phone base station (S202). The position coordinate signal is received by a mobile communication company's GIS server through a base station controller and a wireless Internet network interworking with the mobile phone base station (S203), and location information within the GIS server through a location recognition system interworking with the GIS server. The distance from the subway station location coordinates pre-stored in the database is calculated (S204).

As described above, according to the positioning service method according to the present invention, there is no hassle of checking a subway station to be disembarked by passengers using the subway, so that time can be used for reading, listening to music, etc. when using the subway.

As described above, according to the positioning service method using a mobile phone terminal according to the present invention, a passenger in a subway connects to a GIS server of a mobile communication company or a location service company by using his mobile phone terminal and gets off the subway. If the station is selected, the location of the passenger is tracked through the GIS server and SMS server linked with the mobile phone terminal, and when the location of the passenger is a certain distance from the subway station to get off, an alarm and a text message are transmitted to the mobile phone terminal. There is no hassle that passengers who use the subway need to check the subway station to get off at any time, and there is an effect that they can use time for reading and listening to music when using the subway.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims.

Claims (7)

A first step of a subway passenger connecting to a mobile communication company server or a GIS server of a location service company through a wireless communication network using a mobile phone terminal; A second step of selecting a subway station to get off by searching the location information database of the GIS server; Receiving a position coordinate of the subway passenger from the mobile telephone terminal of the subway passenger and periodically and repeatedly calculating a distance from the position coordinate of the subway station to get off; And A fourth step of transmitting an alarm and a text message to a mobile terminal of the subway passenger through a text information database of an SMS server interworking with the GIS server when the calculated distance approaches a certain distance by checking whether the calculated distance approaches a certain distance; Location service method using a mobile phone terminal comprising a. The method of claim 1, Location coordinates of the subway passenger is provided to the mobile communication company server or the location service company server from the mobile phone base station interworking with the mobile phone terminal. The method of claim 2, And the mobile telephone base station receives a GPS signal indicating a current position coordinate of the subway passenger from at least three or more GPS satellites through a GPS receiver. The method of claim 1, The third step, Receiving positional coordinates of a current subway passenger from at least three or more GPS satellites via a GPS receiver of the mobile phone terminal; Recognizing the position coordinates through a digital signal processing processor interoperating with the microprocessor of the mobile telephone terminal; Modulating the recognized position coordinates into RF signals and transmitting them to a mobile telephone base station; Receiving the position coordinates through a base station controller interworking with the mobile telephone base station and a mobile telecommunication company server through a wireless internet network; And Calculating a distance between the received location coordinates and the location coordinates of the subway station to get off previously stored in the location information database of the GIS server linked with the location recognition system; Location service method using the mobile phone terminal, characterized in that comprises a. The method of claim 1, The mobile telephone terminal includes a CDMA mobile telephone terminal and an IMT-2000 mobile telephone terminal. The method of claim 1, And the mobile telephone terminal accesses the mobile communication company server through a built-in universal web browser. The method of claim 1, And location coordinates of each subway station are pre-stored in the location information database.