KR20060082586A - Location tracking method of mobile communication terminal - Google Patents

Abstract

The present invention provides a location tracking method of a mobile communication terminal. When a mobile communication terminal requests a location inquiry through a data network by accessing a location-based server with a browser, gps tracking is performed from the location-based server to the mobile communication terminal. A first step of fulfilling the request; A second step of, when the mobile communication terminal requests satellite reception data by accessing the GPS receiver, transferring the data received from the satellite to the mobile communication terminal; When the satellite data received from the mobile terminal after the second step is transmitted to the location-based server, the location-based server comprising a third step of transmitting the map information including the location to the mobile communication terminal by In a limited space, such as in a building, location tracking for a terminal having a location tracking function can be performed.

Description

Method for location trace of mobile communication station

1 is a block diagram for providing a location-based service including a conventional mobile communication terminal and a location-based server,

2 is a flowchart illustrating a location tracking method of a mobile communication terminal according to the present invention.

Explanation of symbols on the main parts of the drawings

10: mobile communication terminal 20: base station

30: GPS receiver 40: satellite

50: mobile communication network 60: location-based server

The present invention relates to a location tracking method of a mobile communication terminal, and more particularly, to a location tracking method of a mobile communication terminal that is suitable for performing location tracking for a terminal having a location tracking function in a limited space such as a building.

In general, the mobile communication system is a communication system for mobile devices such as people, cars, ships, trains, and airplanes, which includes key phone systems, mobile phones (mobile phones, vehicle phones), port phones, aircraft phones, mobile public phones ( Trains, cruise ships, express buses), radio calling, radiotelephony, satellite mobile communication, amateur radio, and fishing service ships.

The mobile communication system includes an AMPS (Advanced Mobile Phone Service) system using an analog method, a Code Division Multiple Access (CDMA) system using a digital method, a Wideband Code Division Multiple Access (WCDMA), and a TDMA (Time). Division Multiple Access, Time Division Multiple Access (FDMA) system, Frequency Division Multiple Access (FDMA) system, Wireless Local Loop (WLL), CDMA2000-1x, IMT-2000 (International Mobile Telecommunication in the year 2000 , Global mobile communication (GSM) systems, and GSM (Global System for Mobile communication) systems.

Therefore, the mobile communication terminal is used in the above mobile communication system to receive a mobile communication service.

In addition, gpsOne is a terminal in which a location tracking function is implemented in a mobile communication terminal.

This mobile terminal with gpsOne function is a mobile terminal that can receive the current location of the mobile terminal user's location tracked through the base station and the GPS (Global Positioning System) satellite. Refers to a communication terminal.

1 is a block diagram for providing a location-based service including a conventional mobile communication terminal and a location-based server.

Here, reference numeral 10 is a mobile communication terminal, 20 is a base station, 30 is a GPS receiver, 40 is a satellite, 50 is a mobile communication network, and 60 is a location-based server.

Therefore, Location Based Service (LBS) is based on portable mobile communication terminals such as mobile phones, PDAs (Personal Digital Assistants) and notebook PCs (Personal Computers) to accurately identify the location of a person or object. Refers to a system that provides additional information services related to location. 3GPP (3rd Generation Partnership Project) defines location-based services in TS 22.071 as "standardized services using networks that can provide location-based applications."

In order to perform the location-based service, the mobile terminal 10, the base station 20, the GPS receiver 30 and the satellite 40 using the Position Determination Technology (PDT) and the mobile communication network 50 There is a need for a mobile communication technology and a location based service platform technology using the location based server 60.

Thus, the wireless positioning technology is a technology for acquiring an accurate position of a user who carries the mobile communication terminal 10 on the earth. It is divided into a network-based technology using a base station 20 and a handset-based technology using a GPS receiver 30, and recently, a hybrid type technology that improves location accuracy by mixing the two technologies has been developed.

The network-based method can use the existing mobile phone as it is without additional cost, but the positional accuracy is not accurate (500meter ~ several Kilometer) according to the cell size or processing method of the base station 20.

The handset-based method has a cost problem of additionally mounting the GPS receiver 30, but has an advantage of measuring a very accurate position. In addition, problems with GPS receivers, such as a problem that takes a long time for initial positioning (about 1 minute), a problem that requires a lot of battery consumption, and a problem where positioning cannot be received from satellites due to high-rise buildings in the city have. Qualcomm's positioning technology, gpsOne, is a technology that acquires SnapTrack's Wireless Assisted GPS (WAG) technology, which solves the problems described above, and embeds it in its CDMA chip to serve it.

In addition, Telecommunication Technology is largely divided into CDMA technology in North America and Asia and GSM technology centered in Europe excluding these regions.

In addition, LBS Platform Technology (LBS Platform Technology) is a platform for providing the necessary base technology between the mobile communication network and LBS applications, and provides technologies such as access to the network, location information service, user information service, and network management. There are LBS portal server technology, application server technology that supports various LBS application services, and location data server technology that processes real-time mass location information.

On the other hand, gpsOne solution, Qualcomm's positioning technology, combines the advantages of network solution using base station and GPS system using satellite. Network solutions work well in urban areas and densely populated areas, but are not smooth in outlying areas or areas with small base station distributions. On the other hand, a single GPS solution works well in open spaces, but it does not work well in dense urban areas or indoors. Both of these solutions have significant problems when used independently. Network solutions suffer from inaccuracies and expensive operating costs, and both GPS technology and network solutions are incomplete to provide fully secure and secure services to consumers.

Therefore, Qualcomm's gpsOne solution is a hybrid location tracking solution that combines the advantages of GPS solution and network solution, and uses GPS and network information together to overcome terrain problems. The gpsOne solution provides location information in environments where network solutions and standalone GPS technologies are not used, such as in the middle of urban concrete reinforcement forests or deserts.

The service that can be tracked by the mobile communication terminal 10 with gpsOne function currently implemented in SKT is self-location inquiry, counterpart location inquiry, self-location transmission, etc. I want to perform

However, this conventional technology has the following problems.

That is, the above-mentioned conventional techniques have a problem in that most of them do not function properly in a building or underground. Enumerating them is as follows.

1) When gpsOne is used for location tracking, GPS satellite signals are very weak inside and underground, so it is difficult to use location because of limitations.

2) In the original gpsOne technology, if it is difficult to track in a building, it is specified in the specification so that the strength of the base station near the mobile terminal can be measured and found using triangulation, but it is not currently used and implemented. Even if the error range (about 100M) is a very big problem.

3) In this conventional technology, due to the difficulty of location tracking in a building and the use of triangulation, the error range is so large that users' thoughts about gpsOne are not greatly recognized and difficulty in minimizing damage prevention in case of an emergency occurs. There was a downside.

Accordingly, the present invention has been proposed to solve the above-described general problems, and an object of the present invention is to provide a mobile communication terminal capable of performing location tracking for a terminal having a location tracking function in a limited space such as a building. To provide a location tracking method.

Location tracking method of a mobile communication terminal according to an embodiment of the present invention to achieve the above object,

A first step of performing a gps tracking request from the location-based server to the mobile communication terminal when the mobile communication terminal requests a location inquiry through a data network by accessing the location-based server as a browser; A second step of, when the mobile communication terminal requests satellite reception data by accessing the GPS receiver, transferring the data received from the satellite to the mobile communication terminal; And transmitting the satellite data received from the mobile communication terminal to the location-based server after the second step, and transmitting the map information including the location to the mobile communication terminal. The technical configuration features.

Hereinafter, an embodiment according to the present invention as described above, the technical spirit of the location tracking method of the mobile communication terminal will be described with reference to the drawings.

2 is a flowchart illustrating a location tracking method of a mobile communication terminal according to the present invention.

As shown in the drawing, when the mobile communication terminal 10 requests a location inquiry through a data network by accessing the location-based server 60 as a browser, the location-based server 60 to the mobile communication terminal 10. a first step (ST1) (ST2) of performing a gps tracking request; When the mobile communication terminal 10 connects to the GPS receiver 30 to request satellite reception data, the second receiver transfers data received from the satellite 40 from the GPS receiver 30 to the mobile communication terminal 10. Step ST3 and ST4; After the second step, if the satellite data transmitted from the mobile communication terminal 10 is transmitted to the location-based server 60, the location-based server 60 sends the map information including the location to the mobile communication terminal 10. And a third step ST5 (ST6) to be transmitted.

In the first step, location inquiry is characterized by querying the location of the mobile communication terminal 10 itself.

The location inquiry in the first step is characterized by querying the location of the mobile communication terminal of the other party.

In the second step, the mobile communication terminal 10 and the GPS receiver 30 are connected by Bluetooth.

In the second step, the mobile communication terminal 10 and the GPS receiver 30 may be connected to each other through a wireless local area network.

In the second step, the satellite receiver AA and the invisible satellite data SA are transmitted from the GPS receiver 30 to the mobile communication terminal 10.

In the third step, the mobile terminal 10 transmits satellite data using a data burst message (DBM) from the mobile communication terminal 10 to the location-based server 60.

The operation of the location tracking method of the mobile communication terminal according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, the present invention intends to perform location tracking for a terminal having a location tracking function in a limited space such as a building.

Thus, the present invention is to enable the GPS satellite-based location tracking in the building, the specific description is as follows.

First, a GPS receiver 30 for receiving a GPS satellite signal at a specific location of a building is mounted.

In addition, the mobile communication terminal 10 employs a Bluetooth or WLAN technology capable of exchanging satellite data with the GPS receiver 30 wirelessly.

When such an environment is established, when the mobile communication terminal 10 intends to perform the location tracking, the mobile communication terminal (authentication) using an encryption code (authentication) if necessary to transmit and receive with the GPS receiver 30 mounted in the building first ( 10) to enable interworking with the GPS receiver 30.

Accordingly, by minimizing vulnerabilities in places where GPS operation cannot be used properly in an emergency situation, GPS-based location tracking is possible even at a location where user location or location tracking is weak.

Referring to the operation of the present invention in more detail as follows.

First, the mobile communication terminal 10 requests a location inquiry through a data network by accessing the location-based server 60 as a browser (ST1).

At this time, for example, in the case of SKT, Nate (NATE) to perform a self-location search or the other party's location lookup [find friends].

Then, the location-based server 60 performs a gps tracking request to the mobile communication terminal 10 (ST2).

That is, after the mobile communication terminal 10 accesses the location-based server 60, the location-based server 60 finds the location of the mobile communication terminal by itself, and exchanges IS-801 messages with the mobile communication terminal.

The mobile communication terminal 10 connects to the GPS receiver 30 and requests satellite reception data (ST3).

At this time, the message sent from the mobile communication terminal 10 transmits the data received from the GPS receiver 30 in the building connected to the Bluetooth or WLAN.

Then, the GPS receiver 30 transmits the data received from the satellite 40 to the mobile communication terminal 10 through Bluetooth or wireless LAN (ST4).

At this time, the GPS receiver 30 transmits the satellite data AA and the invisible satellite data SA which are seen by the mobile communication terminal 10.

When the satellite data transfer from the GPS receiver 30 to the mobile communication terminal 10 is completed, the connection of the Bluetooth or the wireless LAN is released.

Then, the satellite data transmitted from the mobile communication terminal 10 is transmitted to the location-based server 60 (ST5).

At this time, the mobile communication terminal 10 transmits satellite data to the location-based server 60 using a data burst message (DBM).

The location-based server 60 then calculates the location of the mobile communication terminal using the received satellite data and displays it on the map (ST5).

In addition, the location-based server 60 transmits the map information including the location to the mobile communication terminal 10 (ST6).

In this case, SKT transmits the map information to the mobile communication terminal through the NATE browser so that the map including the location information is displayed on the display window of the mobile communication terminal.

In addition, it is possible to overcome the limitation of using the service with a small error range of positioning accuracy (base station is about 100M, whereas GPS base is about 10M).

In addition, the user can use the present invention even when attempting to search his / her own location or the other party's location.

As described above, the present invention is to perform location tracking for a terminal having a location tracking function in a limited space such as in a building.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments.

In other words, even if the user of the terminal is in danger in the Phase II standard of the US E911, the emergency button is used to use the E911 function. This feature uses gpsOne technology, but the present invention can be applied to it. The invention can also be applied to mobile communication terminals using other GPS technologies. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the location tracking method of the mobile communication terminal according to the present invention has an effect of performing location tracking for a terminal having a location tracking function in a limited space such as in a building.

In addition, the position tracking in the prior art using the base station was an error range of about 100M, the present invention has a very narrow error range of about 10M by using a GPS receiver has the effect that it is possible to perform the location tracking more accurately.

Therefore, the present invention has the effect of minimizing the prevention of damage even when an emergency occurs in a building or the like.

Claims (7)

A first step of performing a gps tracking request from the location-based server to the mobile communication terminal when the mobile communication terminal requests a location inquiry through a data network by accessing the location-based server as a browser; A second step of, when the mobile communication terminal requests satellite reception data by accessing the GPS receiver, transferring the data received from the satellite to the mobile communication terminal; And transmitting the satellite data received from the mobile communication terminal to the location-based server after the second step, and transmitting the map information including the location to the mobile communication terminal from the location-based server. Location tracking method of a mobile communication terminal, characterized in that. The method of claim 1, wherein the location query in the first step, Location tracking method of the mobile communication terminal, characterized in that to query the location of the mobile communication terminal itself. The method of claim 1, wherein the location query in the first step, A location tracking method of a mobile communication terminal, characterized by querying the location of the other party's mobile communication terminal. The method of claim 1, wherein the second step, Location tracking method of the mobile communication terminal, characterized in that for connecting the mobile communication terminal and the GPS receiver via Bluetooth. The method of claim 1, wherein the second step, Location tracking method of the mobile communication terminal, characterized in that for connecting the mobile communication terminal and the GPS receiver via a wireless LAN. The method of claim 1, wherein the second step, And positioning the visible satellite data and the invisible satellite data from the GPS receiver to the mobile communication terminal. 7. The method of claim 1, wherein the third step comprises: And a satellite data is transmitted from the mobile communication terminal to the location-based server using a data burst message.

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