KR20060005926A - Position notification method and system by using map image transmission in mobile communication network - Google Patents

Abstract

The present invention relates to a method and a system for providing a location notification service using a map image transmission in a CDMA network. The present invention relates to a GPS satellite, a source and a receiver mobile communication terminal, a base station transmitter (BTS), a base station controller (BSC), and a mobile switching center (MSC). Using a service providing server interworking with a CDMA mobile communication network, the GPS receiver receives a GPS signal from a calling mobile terminal equipped with a GSP receiver to calculate location information, or directly receives location information. After confirming, the mobile device automatically generates a map image indicating the caller's location and transmits the map image to the receiving mobile terminal designated by the caller.

According to the present invention, even if the receiving mobile terminal does not have a GPS function, the location notification service is possible even by SMS reception and a simple image output function. Can send / receive the cost and the cost of the caller, so it is possible not only to avoid the disadvantage of location notification being ignored by the receiver in an emergency, but also to save the map image of the caller's location on the server. It also has the advantage of reducing the load on the server.

Map image, CDMA, location notification

Description

Location Notification Service and System using Map Image Transmission in Wireless Communication Network {Position Notification Method and System by using Map Image Transmission in Mobile Communication Network}

1 is a block diagram schematically illustrating an example of a general location-based service system using GPS;

2 is a view showing the configuration of an entire system for providing a location notification service in a wireless communication network according to the present invention;

3 is a functional block diagram of a service providing server that provides a map image location notification service according to the present invention;

4 is a flowchart showing the overall flow of providing a map image location service according to the present invention;

5 illustrates an example of a user interface screen when providing a map image location notification service according to the present invention. FIGS. 5A and 5B show a calling terminal screen and FIG. 5C shows a receiving terminal screen.

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

200: GPS satellites 210: calling mobile terminal

210 ': receiving mobile terminal 220: mobile communication network

221: base station transmitter (BTS) 222: base station controller (BSC)

223: MSC 240: LBS platform

250: service providing server 310: map DB

320: data receiving unit 330: location calculating unit

340: Map image generation unit 350: Control unit

360: map image transmission unit

The present invention relates to a method and a system for providing a location notification service using a map image transmission in a wireless communication network, and more particularly, to calculate a location information by receiving a GPS signal from a calling mobile communication terminal equipped with a GSP receiver, or The present invention relates to a method for transmitting a map image to a receiving mobile terminal designated by a sender after automatically confirming a caller's location by receiving the location information, automatically generating a map image indicating the caller's location, and a system for implementing the same. .

As computer, electronic, and communication technologies have made rapid progress, various wireless communication services using wireless networks have been provided. The most basic wireless communication service is a wireless voice call service that provides a voice call to a mobile terminal user wirelessly, which can provide a service regardless of time and place, and provides a text message service to provide a voice call. It complements the service.

Meanwhile, with the establishment of the Internet based on Transmission Control Protocol / Internet Protocol (TCP / IP), various types of data can be searched using the Internet or various data including text, voice, image, video, etc. In addition to the rapid development of a system capable of real time transmission, in order to use a variety of communication services using the Internet in a better environment, the diffusion of high-speed communication network, etc. is greatly increased.

In addition, in recent years, in order to provide a communication service that transcends space, a wireless Internet service for providing an Internet communication service to a mobile communication service subscriber through a wireless communication network has emerged, and many companies have been developing technology for the wireless Internet. The wireless Internet service is an advanced personalization service according to the use of the terminal of the individual and has a feature of providing a unique information based on the mobility of the user. Mobile communication service subscribers can receive various information such as news, weather, sports, securities, exchange rates, traffic information, etc. in various forms such as text, voice, still image, and video through wireless Internet service.

Among various wireless Internet services using a mobile communication terminal, in particular, LBS (Location Based Services) has gained much attention due to its wide utility and convenience. Location-based service refers to a communication service that locates a mobile communication terminal such as a mobile phone, a personal digital assistant (PDA), a notebook PC, and provides additional information related to the identified location. Location-based services include requests for rescue, response to crime reports, geographic information systems (GIS) for providing information on neighboring areas, differentiation of mobile communication charges based on location, traffic information, vehicle navigation and logistics control, location-based CRM It can be used in various fields and situations such as customer relationship management.

In order to use the location-based service, it is essential to know the location of the wireless communication terminal. The technique of locating a wireless communication terminal is called PDT (Position Determination Technology), which is a network-based method using a base station received signal and a handset based using a Global Positioning System (GPS) signal. -Based) method, and recently, a hybrid method that combines the two technologies to improve the position accuracy has been developed.

The network-based method does not need to add a new module to an existing mobile phone, which does not require additional cost for mobile phone development. However, the position error is approximately 500 m depending on the cell size or location determination method of the wireless base station. The disadvantage is that it is inaccurate enough to reach a few km. Accordingly, a handset based method using a GPS signal is generally used as a method of determining a location using wireless communication.

1 is a block diagram schematically illustrating an example of a location-based service system 100 using GPS.

The GPS-based location-based service system 100 includes a GPS satellite 110, a mobile communication terminal 120, a base transceiver station (BTS) 130, and a base station controller (BSC) 140. , A mobile switching center (MSC) 150, a GPS-based location-based LBS platform 160, a service providing server 170 linked to or included in the LBS platform, and the like.

Additional components such as an IWF and a WAP gateway may be provided to provide services linked with other wireless Internet.

The GPS satellite 110 is a satellite used to locate the mobile communication terminal 120 in GPS. The GPS satellite 110 is composed of 24 satellites that continuously transmit the navigation data necessary for position calculation to the mobile communication terminal 120 through a carrier wave, of which 21 satellites are used for navigation. Satellites are reserved for reserve.

The mobile communication terminal 120 is a terminal in which a GPS receiver or the like for receiving navigation data from the GPS satellites 110 is embedded. The base station transmitter 130, the base station controller 140, and the mobile switching center 150 perform functions such as clock distribution, GPS data transmission and reception, etc. for GPS as well as a typical call processing function.

The service providing server 170 calculates a location of the mobile communication terminal 120 by receiving location information such as a GPS signal received by the terminal or a latitude and longitude coordinate of the terminal location calculated by the terminal from the mobile communication terminal 120. And, the calculated position information is transmitted to a separate LBS platform 160 providing various location based services.

The GPS described in FIG. 1 is freely available to anyone, there is no limitation on the number of users, continuous positioning is possible in real time, and there is an advantage that relatively accurate position measurement is possible.

Location notification or positioning services among the location-based services using the GPS has recently attracted attention.

When the subscriber requests the subscriber to check his / her location by accessing the location-based service providing server, the service providing server receives the GPS signal from the mobile communication terminal or receives the latitude / longitude information already calculated from the GPS signal. After receiving, the service calculates the specific location where the terminal is located and retransmits the information to the terminal. Provided location information can mainly inform the name of the administrative place, major buildings, etc., and in some cases may be displayed as a map image.

In addition, a positioning service of another terminal or a lost terminal is also provided. In this service, a subscriber accesses a service providing server using his or her mobile terminal, and then agrees to check the location of another terminal or his or her own terminal. When requesting location confirmation by inputting the information of the lost terminal, the server receives the GPS signal or the location information of the longitude and latitude from the corresponding mobile communication terminal, and then texts the location information of the other terminal or the lost terminal to the requested terminal. , Main building name) or image (map) is transmitted and printed.

In addition, a so-called "location notification service" for notifying other users of their location is also used.

In the current location notification service, the sender requests a location notification service by inputting terminal information on the receiving side while transmitting the longitude / latitude information calculated from the GPS signal or the GPS signal received by the caller to the service providing server. Then, the service providing server calculates and stores the specific location of the calling terminal and transmits a short message (SMS) to confirm the location to the receiving terminal. The receiving subscriber receiving the SMS is connected to the service providing server through a call back number, receives personal authentication, and then checks the location information of the calling terminal.

This location notification service is useful when there is an urgent situation to let others know where you are because of distress or abduction, or where you can know your location but have trouble making calls with others. Can be.

However, this location notification service has the following disadvantages.

First, the current location notification service is available only when both the calling and receiving terminals have GPS functions. However, since a mobile communication terminal having a GPS function is not yet popularized, subscribers who can use the location notification service are very limited.

Secondly, in the current method, the caller only performs location notification request and SMS transmission. Therefore, the receiver has to reconnect to the service providing server to check the location, which is not only cumbersome but also causes the service cost to the receiver. Doing. That is, despite the caller's location notification request for the above reason, unless the receiver checks the location by accessing the server for the reason that the recipient is troublesome or for the cost, the desired purpose cannot be achieved. In addition, the same problem occurs when the receiving terminal is not connected to the service providing server.

Recently, the second problem may occur frequently in that the receiver is likely to ignore the location notification SMS in consideration of the flooding of spam messages and advertisement messages. In addition, this second problem can be fatal when the caller announced his location in an emergency such as distress, but the receiver disregards him or cannot confirm due to server connection failure.

Thirdly, since the location information of all callers must be stored in the server, the load on the server increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and provides a scheme for a sender to accurately and quickly inform a receiver of his location in a CDMA mobile communication network.

In order to solve this problem, the present invention provides a method for providing a location notification service for generating a map image indicating a precise location of a calling terminal by using a GPS in response to a request of a calling terminal in a wireless communication network and immediately transmitting the same to a receiving terminal. It aims to provide.

Another object of the present invention is to receive the location-related information and the receiving terminal information from the calling terminal having a GPS function, to calculate the exact position of the calling terminal, to generate a map image indicating the location to the receiving side It is to provide a service providing system for transmitting to the terminal.

In order to achieve the above object, the present invention provides a mobile communication network and a service providing server including a GPS satellite, a source and a receiver mobile communication terminal, a base station transmitter (BTS), a base station controller (BSC), and a mobile switching center (MSC). The service providing server may include a first step of receiving GPS information of a calling mobile terminal and receiving mobile terminal information from a calling mobile terminal through the mobile communication network. A second step of calculating the location of the calling mobile terminal using the GPS information of the mobile communication terminal; and a map image including the location of the calling mobile terminal by referring to a map DB included in or linked to the service providing server; Receiving terminal corresponding to the third step of generating a file, the location notification data including the map image file It comprises a fourth step of transmitting the output.

The data received from the calling mobile terminal may be a GPS signal received by the GPS antenna of the calling terminal, or may be location information (longitude / latitude information) of the calling terminal primarily calculated from the GPS signals. In addition, the calculation of the location of the calling terminal may be performed using a conventional GPS positioning method or an A-GPS (Assisted GPS) positioning method using a base station as a reference station.

The map image file may have a general format such as JPG, BMP, GIF, or TIFF that can be output by a general mobile communication terminal, but may take a different format according to the type of terminal.

In addition, in the fourth step, the map image file may be transmitted in a conventional short message (SMS) transmission format, CDMA 1x line transmission, and CDMA 1x EV-DO packet transmission format.

The service providing server according to the present invention is a server interworking with a mobile communication network including a GPS satellite, a source and a receiver mobile communication terminal, a base station transmitter (BTS), a base station controller (BSC), and a mobile switching center (MSC). Receive GPS information and receiving mobile terminal information from a communication terminal, calculate the location of the caller mobile communication terminal, generate a map image file including the location, and then send a location notification message including the map image file. Characterized in that the transmission to the receiving mobile terminal.

Looking at each function, the service providing server includes or is linked with a map DB for storing a plurality of map images, and a data receiving unit for receiving data from the calling mobile communication terminal via the mobile communication network, and a predetermined positioning algorithm A location image calculating unit for calculating a location of a calling mobile terminal by using a map image generating unit for generating a map image file including a calling terminal terminal calculated by referring to the map DB, and generated through the mobile communication network; And a map image transmitter for transmitting a location notification message including a map image file to a receiver-side mobile communication terminal designated by the sender.

The MSC or the service providing server may include a subscriber DB storing subscriber information, and the MSC or the service providing server may use a subscriber DB to send a caller or a location notification request according to the present invention. It may have a function to authenticate one or more of the recipients.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is a diagram showing the configuration of an entire system for providing a location notification service in a mobile communication network (wireless communication network) according to the present invention.

The entire system according to the present invention operates in four or more visible GPS satellites (CDMA) CDMA, and has a GPS function and a source and a receiver mobile communication terminal 210, 210 'and a base station transmitter (BTS). A CDMA mobile communication network 220 including a base transceiver station (221), a base station controller (BSC) 222, and a mobile switching center (MSC) 223, and a GPS-based location-based LBS platform 240 ), The location notification service providing server 250 according to the present invention interlocked with or included in the LBS platform. Map DB 310 is linked to the inside and outside the service providing server.

In addition, the CDMA mobile communication network is connected to the Internet network such as an interworking device (IWF), a WAP gateway, or the like so that the mobile communication terminal can access the service providing server 250 through the wireless Internet or the service providing server using a terminal such as a PC. It may be linked to the 220, in this case, the service providing server 250 may be implemented as a web server or a swap server.

In the present embodiment, a mobile communication network or a wireless communication network is described as a CDMA mobile communication network, but is not limited thereto. The GSM mobile communication network, a TDMA mobile communication network, an IMT-2000 mobile communication network, a W-CDMA mobile communication network, and ultra high speed (HPi) are described. ) It is a broad concept that includes any mobile communication network which relays wireless data between terminals such as mobile communication network.

The calling and receiving mobile communication terminals 210 and 210 'are CDMA type such as PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, Hand-Held PC, CDMA-2000 phone. The concept includes a variety of wireless communication terminals that operate as.

Among the mobile communication terminals 210 and 210 ', the calling terminal may include a GPS antenna and a GPS receiver for receiving GPS radio waves from the GPS satellite 200 and extracting navigation data included in the GPS radio waves. Qualcomm) 's CDMA modem chip, the MSM 3300, can be equipped with a chip that adds a GPS positioning feature called' gpsOne '. Therefore, it is possible to receive GPS signals from the base station or the GPS satellites 200 together with data communication by CDMA, and when the GPS positioning program is embedded, it is possible to calculate its current position from the received GPS signals. The calling mobile terminal 210 transmits the received GPS signal or the calculated location information to the service providing server 250.

The receiving mobile communication terminal 210 'does not need to have a GPS function, and it is possible to output SMS transmission (or CDMA 1x line transmission, CDMA 1x EV-DO packet transmission) and a map image file in a simple format according to the present invention. Anything that can do it is possible.

The CDMA mobile communication network 220 according to a preferred embodiment of the present invention is responsible for data brokerage between the service providing server 250 and the calling and receiving mobile communication terminals 210 and 210 ', and the base station transmitter 221 and And a base station controller 222 and a mobile switching center.

The base station transmitter (BTS) 221 not only transmits data from the mobile communication terminal 210 to the base station controller 222, but also wired / wireless conversion and transmission and reception of wireless signals between the mobile communication terminal 210 and the base station controller (BCS) 222. It is a network endpoint device that is directly connected to the mobile communication terminal (210, 210 ') for performing such.

The base station controller 222 controls the base station transmitter 221 and allocates and releases radio channels such as paging channels and traffic channels for the mobile communication terminals 210 and 210 ', mobile communication terminals 210 and 210' and the base station. Transmit output control of the transmitter 221, soft handoff and hard handoff determination, transcoding and vocoding, and operation and maintenance of the wireless access network. do.

The MSC 223 includes a plurality of electronic exchanges to perform basic and additional service processing, incoming and outgoing call processing of subscribers, location registration and handoff procedures, and interworking with other networks. To this end, the mobile switching center 223 may be configured to include an Access Switching Subsystem (ASS) that performs distributed call processing, an Interconnection Network Subsystem (INS) that performs centralized call processing, and a centralized function of operation and maintenance. It may include a sub-system such as a Central Control Subsystem (Loc), a Location Registration Subsystem (LRS) that performs storage and management of information on mobile subscribers. In addition, the mobile switching center 223 may include an Asynchronous Transfer Mode (ATM) switch (not shown) to transmit data in a cell-based packet manner to increase transmission speed and efficiency of line use. Can be.

A manganese interworking device (IWF: inter-working function (not shown)) according to a preferred embodiment of the present invention includes a CDMA mobile communication network 220 and the Internet, a public switched telephone network, a packet switched data network (PSPDN), and the like. Performs an interface function for interworking with a wired or wireless communication network including a.

In addition, although not shown, the CDMA mobile communication network 220 according to the present invention further includes an SMS transmission system for transmitting a location notification message including a map image file to the receiving mobile communication terminal 210 'in an SMS form. can do.

CDMA mobile communication network 220 according to a preferred embodiment of the present invention is limited to a synchronous mobile communication system such as CDMA 2000 1X, CDMA 2000 1X Evolution-Data Only (EV-DO).

The LBS platform 240 is a platform for providing various location-based services to a mobile communication terminal connected through a mobile communication network, and includes a Position Determination Element (PDE) and a Positioning Center (MPC). And an application server.

In the drawing, the service providing server 250 according to the present invention is shown as being implemented separately from the LBS platform 240, but if one component of the LBS platform implements the function of the service providing server, both of them may be integrated. . In other words, the service providing server 250 according to the present invention may be implemented by being integrated with one or more of a positioning server, a positioning center, and an application server which are components of the LBS platform.

The location notification service providing server 250 according to the present invention receives the GPS signal or the location information of the calling terminal and the information of the receiving terminal together with the location notification request using the map image from the calling terminal. It is an application server that generates a map image file showing the location of the calling terminal by referring to the map DB or GIS and transmits it to the receiving terminal in SMS format. Detailed configuration of the service providing server 250 and the map DB will be described in detail with reference to FIG. 3.

Such a service providing server may be implemented in the form of a WAP server so that the calling terminal can access using the wireless Internet.

3 is a functional block diagram of a service providing server 250 providing a map image location notification service according to the present invention.

The service providing server 250 includes a map DB 310 for storing map images of various accumulations or is linked to such a map DB, and includes a data receiver 320, a location calculator 330, and a map image generator ( 340, a controller 350, and a map image transmitter 360.

The map DB 310 stores maps of all regions of the country at various scales, and may extract a map of a desired region by using a query such as the longitude or latitude, a main building, and the like. The map DB 310 refers to a general data structure implemented in a storage space (hard disk or memory) of a computer system using a database management program (DBMS), and retrieves (extracts), deletes, edits, and adds data. It is a data storage type that can be freely used, such as relational database management system (RDBMS) such as Oracle, Infomix, Sybase, DB2, Gemston, Orion. Object-oriented database management system (OODBMS) such as Orion, O2, etc. and XML Native Database such as Excelon, Tamino, Sekaiju, etc. It can be implemented to fit and has the appropriate fields or elements to achieve its function.

The map DB 310 of the present invention is composed of a plurality of map images matched with the longitude and latitude as a reference, and each map image has various accumulations and may be stored in accordance with administrative names, major building names, and the like. .

The data receiver 320 receives a request for a map image location notification service transmitted from a calling terminal through a mobile communication network, and transmits a GPS signal or location information of the calling terminal transmitted with the request to the location calculating unit. do. At this time, the service providing server may control the data receiver to allow the caller to select either the location notification menu using the callback number according to the prior art and the map image location notification menu according to the present invention.

The location calculator 330 calculates the location of the calling terminal by applying a predetermined GPS positioning algorithm when the GPS signal of the calling terminal is received from the data receiver. Of course, when location information such as the longitude / latitude calculated from the calling terminal has already been transmitted, only the function of transmitting the received location information to the map image file generator 340 is performed.

The GPS positioning algorithm may use a conventional method, which will be briefly described as follows.

The GPS receiver mounted on the terminal receives the C / A code transmitted on the L1 frequency carrier of 1575.42MHz from the GPS satellite, and then generates the same code (PN code) in the receiver and compares it with the received satellite code. Measure the time it takes for the signal from the satellite to leave the satellite. The distance between the satellite and the receiver is measured by "speed of light (speed of a satellite signal) x time required". The distance between the satellite and the receiver thus measured is called pseudo-range.

These pseudoranges include a number of structural errors such as receiver errors, satellite clock errors, and satellite orbit errors, errors due to satellite distribution, and errors due to selective availability (SA) inserted by the US Department of Defense for military purposes. There is an error factor of, and the error due to selective availability has been eliminated since May 2001, and the correct satellite-receiver calculates the distance by eliminating the remaining errors by various error correction methods.

When the correct distances for four or more visible GPS satellites are calculated, triangulation determines a point on the earth's surface, which is the position of the GPS receiver.

According to this simple GPS positioning algorithm, an error of about 100m may occur, and A-GPS (receiving error information from a reference station located near the GPS receiver and removing the error based on the GPS station for more accurate positioning) may be generated. Assisted GPS) or DGPS (Differential GPS) may be used, and according to this method, horizontal accuracy of 2 to 30 m may be secured.

In addition, after receiving the same GPS signal from other GPS antennas besides the GPS receiver, differential phases of the carriers may be measured to measure the phase difference of the carrier to perform more precise (<1m) positioning.

Since the positioning algorithms increase in size and complexity of the program according to the precision, the GPS positioning algorithm installed in the calling mobile communication terminal according to the present invention selects an appropriate one in consideration of the storage capacity of the terminal and the required positioning precision.

The map image file generation unit 340 extracts a map image of a corresponding location from a map DB using the calling terminal location information (longitude / latitude, administrative name, etc.) received from the location calculation unit as a search word, and then displays the screen of the receiving terminal. This function converts the map image file into a format suitable for output to the map. Map image files can have formats such as JPG, BMP, GIF, TIFF, etc., and the resolution and size are adjusted to have a capacity of several tens of KBytes or less in consideration of the transmission speed. In addition, the map image file generation unit may accurately display the location of the calling terminal on the generated map image.

The map image transmitter 360 transmits a map image file generated via a CDMA mobile communication network to a designated receiving terminal, and the transmission method is one of CDMA 1x line transmission and CDMA 1x EV-DO packet transmission in the wireless Internet. The file can be transmitted in a short message format or in a short message (SMS) format when the file size is small. In addition, it is preferable to transmit information such as the name, telephone number, date and time of the caller together with the map image file, and in some cases, may further include an additional message input by the caller. For example, with the map image file, the message "You are in Hong Kong-dong 011-9882-1111's location is 06/23 14:00" and the caller added "You got lost in the mountain." An example is sending an additional message that says, "Save me." The transmitted map image file is directly output on the terminal screen together with a message, so that the caller's location can be confirmed in real time without reconnecting to the server.

The control unit 350 functions to control the above-mentioned components as a whole, and may further include a function of transmitting a map image file to the caller terminal upon request of the caller. By introducing such a function, the caller can store the map image file in the terminal for later reference, so that his / her movement route can be identified by time.

In addition, the controller 350 may transmit its own callback number when the map image file is transmitted. When this function is introduced, the receiving terminal can access the server with the callback number in addition to simply outputting and confirming the map image, receiving a detailed map, or checking the voice message or additional text message left by the caller. have.

The service providing server 250 is preferably implemented in the form of a WAP server so that the mobile communication terminal can access, but in some cases it may be included as a component in the CDMA mobile communication network, it is implemented in the form of a general web server The mobile communication network may be interlocked through a predetermined network interworking device.

Each of the above-described functional components (data receiving unit, location calculating unit, map image file generating unit, control unit, and map image transmitting unit) are written in software of a predetermined programming language such as C, C ++, Java, Visual Basic, and Visual C. It may be implemented in the hardware of the providing server, there is no limitation on the implementation form as long as it has the above-described function.

4 is a flowchart illustrating the overall flow of providing a map image location service according to the present invention.

First, the calling terminal user who wants to announce the location transmits the GPS signal received from the GPS satellite or the location information of the longitude / latitude calculated from the GPS satellite along with the location notification request to the CDMA mobile communication network using the wireless Internet. (S410). At this time, it is preferable that the calling terminal transmits the information (name, phone number) of the calling party, the information of the receiving terminal input by the calling party, and additional messages (if necessary) together.

The CDMA mobile communication network transmits the information to the service providing server (S420), and the service providing server determines the exact location of the calling terminal (S430). If the calling terminal simply provides the GPS signal, the service providing server calculates the caller's position by a predetermined GPS positioning algorithm. However, the originating terminal has its own stand-alone (Stand Alone) method or the A-GPS method (Assisted-GPS) method of measuring its own position by transmitting and receiving correction data with the reference station) In the case of calculating and transmitting location information such as / latitude, a separate location calculation process will not be necessary.

When the location of the calling terminal is determined, the service providing server extracts the primary map image including the calling party location from the map DB, and the resolution, physical size, and data capacity of the receiver to match the screen size, specifications, and capacity of the receiving terminal. , To generate a final map image file for transmission by adjusting the format (S440). At this time, it is preferable that the map image file has a size of about 10 KByte and has a general image file format (JPG, BMP, GIF, TIFF, etc.) so that all terminals can recognize it. A map image file having this size can be transmitted to the receiving terminal within a few seconds even when using SMS. When using either CDMA 1X line communication or CDMA 1x EV-DO packet transmission supporting 144 Kbps, It can be sent within 1 second.

The service providing server generates the location notification message as the final transmission data including the generated map image file, the caller's information (name and phone number), the date and time, the additional caller input message, the callback number, and the like, and then moves the CDMA. It transmits to the receiving terminal via the communication network (S450). At this time, when the amount of data to be transmitted is not large, it may be transmitted in a short message (SMS) format, or in some cases, may be transmitted in CDMA 1x line transmission or CDMA 1x EV-DO packet data. However, it would be more desirable to transmit in SMS format so that the receiving terminal can receive even when the receiving terminal does not use CDMA.

The receiving terminal receiving the transmission data including the map image file directly outputs the received data on the screen. In addition, if necessary, after reconnecting to the server with the callback number included in the final data, the voice / text message left by the caller may be checked or a detailed map image may be provided (S470).

5 illustrates an example of a user interface screen when providing a map image location notification service according to the present invention. FIG. 5A corresponds to a calling terminal screen and FIG. 5C corresponds to a receiving terminal screen.

As shown in FIG. 5A, the caller selects the "Map image location service menu" after accessing the mobile communication system or the service providing server according to the present invention using a wireless Internet or the like. Then, the screen as shown in Fig. 5b is provided and the caller inputs the receiving terminal information (receiving terminal telephone number) and an additional message if necessary. In addition, before sending the location notification message, it is possible to provide a "notification message preview" menu to preview the map image to be sent from the service providing server to the receiving terminal.

In this state, if "1. OK" is selected, the application installed in the calling terminal transmits the service request, the receiving terminal information, and the location information (GPS signal) of the calling terminal to the service providing server via the CDMA mobile communication network. do. The service providing server then determines the location of the calling terminal and extracts / generates a map image of the corresponding location from the map DB. At this time, the mobile switching center of the CDMA mobile communication network preferably checks the identity of the calling subscriber by using a location register or an authentication center and provides the caller's information (name, telephone number, etc.) together with the service providing server.

Subsequently, the service providing server transmits the final image including the map image file and caller information and additional messages to the receiving terminal by one of SMS or CDMA 1x line transmission and CDMA 1x EV-DO packet transmission. You can include the server's own callback number or URL.

Receiving the final data on the screen of the receiving terminal terminal map image, the caller information, additional messages, etc. can be immediately output as shown in Figure 5c. In addition, after reconnecting to the service providing server by using the callback number or URL, it is possible to check an additional text message or voice message left by the calling subscriber or to receive a more detailed map image. In addition, in case of an emergency, it may be possible to provide a function of providing a telephone number of a fire station or a police station located nearby to connect directly.

In addition, before and after the final data is transmitted to the receiving terminal, the same terminal image file may be transmitted / output to the calling terminal, and the sender may be selected to accumulate.

According to the present invention, even if the receiving mobile communication terminal does not have a GPS function, the location notification service can be provided even with SMS reception and a simple image output function.

In addition, unlike the prior art, which needs to reconnect to the service providing server again after receiving the location notification SMS, the callback connection is not required, and since the caller can directly receive / output the map image showing the location of the caller, the cost is also paid by the caller. It is possible to prevent the disadvantage that the location notification is ignored by the receiver in an emergency situation.

In addition, since the size of the map image file can be relatively small, not only can the location be quickly informed within a few seconds, but in the prior art by callback, the present invention needs to store a map image in which the sender's location is displayed on the server. In this case, since the map image itself is transmitted to the receiving terminal, it does not need to be stored in the server, thereby reducing the load on the server.

In addition, since the transmitted map image file is stored in the receiving terminal, it is convenient because the map image of the stored sender can be directly output, unlike the conventional art of reconnecting to the server again in the future.

Claims (34)

A method using a system comprising a GPS satellite, a mobile communication network including a source and a receiver mobile communication terminal, a base station transmitter (BTS), a base station controller (BSC), and a mobile switching center (MSC) and a service providing server, the service providing server Is A first step of receiving GPS information of the calling mobile terminal and receiving mobile communication terminal information from the calling mobile terminal through the mobile communication network; Calculating a location of the calling mobile terminal using the GPS information of the calling mobile terminal; Generating a map image file including a location of a calling mobile terminal by referring to a map DB included in or linked to the service providing server; And transmitting a location notification data including the map image file to a corresponding receiving terminal and outputting the location notification data. 4. The method of claim 1, In the first step, the GPS information is a GPS signal received by the calling mobile terminal, and the location calculation in the second step is performed by a GPS positioning program provided by the service providing server. Location notification service using a map image transmission method. The method of claim 1, The GPS information in the first step is location information calculated from the GPS signal by the calling mobile terminal, and the location calculation in the second step determines the location of the calling mobile communication terminal from the location information received by the service providing server. Location notification service using a map image transmission in a wireless communication network, characterized in that performed by. The method of claim 1, In the first step, the caller information is further received from the mobile communication network, and the caller information is added to the location notification message in the fourth step. How to Provide Services. The method of claim 4, wherein The caller information is location information service providing method using a map image transmission in a wireless communication network, characterized in that at least one of the name, telephone number of the caller. The method of claim 1, The method of claim 1, further comprising receiving additional message input by the sender in the first step. The method of claim 6, The additional message is a method of providing a location notification service using a map image transmission in a wireless communication network, characterized in that at least one of a voice message or a text message input by the caller. The method of claim 1, In the second step, the location of the caller's mobile terminal is calculated using at least one of longitude / latitude information, administrative location information, and main building information. The method of claim 1, The third step is Extracting a primary map image including a location of a calling mobile terminal from a map DB; And step 3-2 of converting one or more of the physical size, capacity, resolution, and format of the primary map image to meet the screen size and specifications of the receiving terminal to generate a final map image file suitable for transmission. Location notification service using a map image transmission in a wireless communication network. The method according to claim 1 or 9, And a location of the calling mobile terminal is explicitly displayed in the map image file. The method according to claim 1 or 9, The map image file has a format of one of JPG, bitmap (BMP), GIF, TIFF format providing a location notification service using a map image transmission in a wireless communication network. The method of claim 11, The map image file has a size less than 100KByte location notification service providing method using a map image transmission in a wireless communication network. The method of claim 1, In the fourth step, the location notification message is transmitted by a short message (SMS) transmission using an SMS transmission system of a mobile communication network, by one of CDMA 1x line transmission and CDMA 1x EV-DO packet transmission. Location notification service using a map image transmission in a wireless communication network. The method of claim 1, The location notification message further includes at least one of a callback number of a service providing server, a URL of a service providing server, and an IP address. The method of claim 14, When the receiving terminal reconnects by using one of a callback number, a URL, and an IP address of a service providing server, transmitting a voice message or a text message input by the sender to the receiver mobile communication terminal according to a request from the receiver; And a fifth step of providing at least one of the functions of transmitting the detailed map information including the location of the sender mobile communication terminal to the receiver mobile communication terminal. How to provide location notification service. A server interworking with a mobile communication network including a GPS satellite, a source and a receiving mobile terminal, a base station transmitter (BTS), a base station controller (BSC), and a mobile switching center (MSC), Receive GPS information and receiver mobile terminal information from the caller mobile terminal, calculate the location of the caller mobile terminal, generate a map image file including the location, and then include a map image file. Location notification service providing server using a map image transmission in a wireless communication network, characterized in that for transmitting a notification message to the receiving mobile terminal. A server interworking with a mobile communication network including a GPS satellite, a source and a receiving mobile terminal, a base station transmitter (BTS), a base station controller (BSC), and a mobile switching center (MSC), Includes or is linked with a map DB that stores multiple map images, A data receiver configured to receive data from a calling mobile terminal through the mobile communication network; A position calculating unit for calculating a position of the calling mobile terminal by a predetermined positioning algorithm; A map image generator for generating a map image file including a location of a calling terminal calculated with reference to the map DB; And Map image transmission unit for transmitting a location notification message including a map image file generated via the mobile communication network to the receiving mobile terminal designated by the sender Location notification service providing server using a map image transmission in a wireless communication network comprising a. The method of claim 17, The data received by the data receiver from the calling mobile terminal is a GPS signal received by the calling mobile terminal from three or more GPS satellites, information on the receiving mobile terminal input by the caller, and a sender transmitted by the mobile communication network. Location notification service providing server using a map image transmission in a wireless communication network comprising one or more of the information. The method of claim 18, The location algorithm of the location calculator is a location information service server using a map image transmission in a wireless communication network, characterized in that the GPS positioning algorithm. The method of claim 17, The data received by the data receiver from the calling mobile terminal includes location information calculated by the calling mobile terminal from GPS signals received from three or more GPS satellites, information on the receiving mobile terminal input by the caller, Location notification service providing server using a map image transmission in a wireless communication network, characterized in that it comprises one or more of the caller information transmitted by the mobile communication network. The method of claim 20, And the positioning algorithm of the location calculator determines the received location information as the final location of the calling mobile terminal. The method according to any one of claims 18 to 21, In the wireless communication network, the data receiving unit includes an additional message additionally input by the sender in the data transmitted from the calling mobile terminal, and the location notification message includes one or more of the caller information and the additional message. Location notification service server using the map image transmission of. The method of claim 22, The caller information is a location notification service providing server using a map image transmission in the wireless communication network, characterized in that at least one of the name, telephone number of the caller. The method of claim 22, The additional message is a voice message or a text message, and the service providing server provides a location notification service server using a map image transmission in a wireless communication network, characterized in that for storing the additional message. The method of claim 17, The location of the calling mobile terminal determined by the location calculator is location information service server using a map image transmission in a wireless communication network, characterized in that at least one of the longitude / latitude information, administrative location information, main building information. The method of claim 17, The map image generating unit extracts a primary map image including the location of the calling mobile terminal from the map DB, and matches the physical size, capacity, resolution, and size of the primary map image to meet the screen size and specifications of the receiving terminal. A location notification service providing server using a map image transmission in a wireless communication network, characterized in that for converting one or more of the formats to generate a final map image file suitable for transmission. The method of claim 17 or 26, Location map service providing server using the map image transmission in the wireless communication network, characterized in that the location of the calling mobile terminal is explicitly displayed in the map image file. The method of claim 17 or 26, The map image file has a format of one of the format of JPG, bitmap (BMP), GIF, TIFF server providing a location notification service using a map image transmission in a wireless communication network. The method of claim 28, The map image file is a location notification service providing server using a map image transmission in a wireless communication network, characterized in that having a size smaller than 100KByte. The method of claim 17, The map image transmitting unit transmits the location notification message by one of a short message (SMS) transmission using an SMS transmission system of a mobile communication network, CDMA 1x line transmission, and CDMA 1x EV-DO packet transmission. Location notification service providing server using a map image transmission in a wireless communication network. The method of claim 17, The location notification message server providing a location notification service using a map image transmission in a wireless communication network, characterized in that it further comprises one or more of the callback number of the service providing server or the URL, IP address of the service providing server. The method of claim 31, wherein When the receiving terminal reconnects by using one of a callback number, a URL, and an IP address of the service providing server, the service providing server may receive a voice message or a text message input by the sender according to a request from the receiver. Location notification service providing server using a map image transmission in a wireless communication network, characterized in that for transmitting to. The method of claim 31, wherein When the receiving terminal reconnects using one of a callback number, a URL, and an IP address of the service providing server, the service providing server may provide more detailed map information including the location of the calling mobile terminal according to a request from the receiver. Location notification service providing server using a map image transmission in a wireless communication network, characterized in that for transmitting to the receiver mobile communication terminal. The method of claim 17, The service providing server is a location notification service providing server using a map image transmission in a wireless communication network, characterized in that for charging the originating subscriber for the location notification service.

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