KR100627717B1 - Position Notification Method by using Map Image Transmission in Mobile Communication Network and DMB Network and DMB Terminal therefor - Google Patents

Abstract

The present invention relates to a method for providing a location notification service using map image transmission in a mobile communication network and a DMB broadcasting network, and a DMB terminal for the same.

The present invention uses a GPS satellite, a receiving mobile communication terminal, a calling mobile DMB terminal connected to a mobile communication network and a DMB broadcasting network. The calling DMB terminal can receive / output a DMB broadcast signal and wirelessly communicate with the receiving mobile terminal. And (a) the originating DMB terminal determines its location represented by one or more of longitude / latitude information, administrative location information, and main building information using the GPS signal received from the built-in GPS module and GPS satellites. The first step to do; (b) After extracting or receiving a map image file including its location from a map DB stored in the memory of the calling party's DMB terminal or included in an externally linked map image providing server, the data necessary for the map image file is received. Adding or converting the map image file to generate a secondary map image file; (c) generating a location notification message including a map image file, a secondary map image file, and caller information; And (d) a fourth step of transmitting / outputting the location notification message generated through the mobile communication network to a desired receiving terminal, wherein the location notification service using the map image transmission in the DMB broadcasting network and the mobile communication network is provided. Provide a method.

According to the present invention, it is possible not only to prevent the disadvantage that the location notification is ignored by the receiver in an emergency situation, and also has the advantage of reducing the load on the server since it is not necessary to store a map image showing the sender's location on the server.

Map image, DMB terminal, mobile communication, location notification

Description

Position Notification Service using Map Image Transmission in DMB Broadcasting Network and Mobile Communication Network and DMB Terminal for It {Position Notification Method by using Map Image Transmission in Mobile Communication Network and DMB Network and DMB Terminal therefor}

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

2 is a diagram showing the configuration of an entire system for providing a location notification service in a mobile communication network and a DMB broadcasting network according to the present invention;

3 is a functional block diagram of a DMB terminal for providing a map image location notification service according to the present invention;

4 is a functional block diagram of a DMB receiving module embedded in a DMB terminal according to the present invention;

5 is a functional block diagram of a map image providing server used in a second embodiment of the present invention;

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

7 illustrates an example of a user interface screen when providing a map image location notification service according to the present invention. FIGS. 7A to 7D show a calling party DMB terminal screen and FIG. 7E shows a receiving terminal screen.

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

200: GPS satellites 210: calling party DMB terminal

210 ': receiving mobile terminal 220: mobile communication network

230: DMB broadcasting network 240: map image providing server

310: antenna element 320: GPS module

330: memory 340: control unit

350: communication module 360: DMB receiving module

411 low noise amplifier (LNB) 412 tuner

413: A / D converter 414: QPSK demodulator

415: weaving / lead-solomon decoder 416: demultiplexer

417: MPEG-2 Decoder 418: Video Board

419 character decoder 420 microprocessor

421: multiplexer 510: map DB

520: data receiver 530: map image generator

540: map image transmission unit 550: location calculation unit

The present invention relates to a method for providing a location notification service using a map image transmission in a mobile communication network, and a DMB terminal therefor, and more particularly, to a longitude / latitude using a GPS signal received by a calling party's DMB terminal equipped with a GPS module. Receive the desired location notification message by adding or converting the necessary data in the map image file which is stored by itself or provided by the external server, which has determined its location represented by one or more of information, administrative location information, and main building information. The present invention relates to a method for transmitting and outputting to a mobile terminal and a DMB terminal 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.

Also, in recent years, in order to provide a communication service that transcends space, a wireless Internet service that provides 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, a base station controller (BSC) 140, A mobile switching center (MSC) 150, a GPS-based location-based LBS platform 160, and a service providing server 170 interworking with or included in the LBS platform may be included.

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 of relatively accurate position measurement.

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. The location information provided is generally the name of an administrative place or a main building.

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 GPS signal received from the terminal or the longitude / latitude information calculated from the GPS signal 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.

Second, in the current method, since the sender only performs location notification request and SMS transmission, it is not only cumbersome because the receiver has to reconnect to the service providing server to check the sender's location, and the service costs are borne by the receiver. Is occurring. That is, despite the caller's location notification request for the above reason, it is impossible to achieve the desired purpose without accessing the server and confirming the location for the reason that the receiver is troublesome or for the cost. 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.

On the other hand, the development of digital multimedia broadcasting (hereinafter referred to as DMB) has been actively progressed recently.

The DMB refers to a digital multimedia broadcasting system capable of CD-quality sound and data or video services, and providing excellent fixed and mobile reception quality. That is, a broadcast service that can listen to / listen to multi-channel voice and multimedia services to a vehicle or a portable DMB terminal while moving is collectively divided into terrestrial DMB and satellite DMB services. The DMB has been recently introduced due to the need for various digital multimedia broadcasting with the rapid development of portable terminal and data compression technology, and the area is expected to be greatly expanded in the future.

Terrestrial DMB is managed by terrestrial broadcaster, and it uses DMB broadcasting center and vehicle / portable DMB terminal on the ground. It uses 1.5MHz bandwidth in VHF (30-300MHz) terrestrial band and Eureka-147 standard. Receiving bit rate of 384 ~ 512Kbps, using video compression standard of MPEG-4, modulation method using DQPSK, terrestrial DMB terminal is suitable for TV, mobile phone, PDA, etc. of screen size less than 7 inches.

The satellite DMB is serviced with a bandwidth of 25 MHz in the 2.63-2.655 GHz band, which is a much higher frequency than terrestrial waves (UHF) .The satellite DMB broadcasts various contents to the DMB satellite at Ku-Band frequency (13.824-13.833 GHz). The DMB satellite transmits the received content data to the S-band (2.535-2.655GHz) allocated to the DMB to the terrestrial DMB terminal. In case it is difficult to receive satellite signals directly, a terrestrial repeater called Gap Filler can be used, and the Gap Filler receives the broadcast content from the DMB satellite through Ku-Band and then retransmits it to the shadow area in the S-band.

Satellite DMB has System A method, System Dh method and System E method depending on the transmission method. However, in Korea, the system E method developed by SK Telecom jointly with MBCo of Japan is set as standard.

On the other hand, DMB terminals or receivers can be largely classified into vehicle-mounted receivers, fixed receivers, portable DMB-only receivers, PC DMB receivers, mobile phone / PDA DMB chipsets, etc. Although used, the demand for mobile phones with DMB chipsets for mobile phones / PDAs is expected to increase.

Such a mobile phone with a built-in DMB chipset includes a DMB service function as well as a general communication function, and is implemented as an integrated type that combines broadcasting and communication. It is expected to be replaced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and a mobile communication network is intended to provide a way for a caller to accurately and quickly and inexpensively notify his or her location of a location using a DMB terminal.

In order to solve this problem, the present invention calculates the exact position of the calling party DMB terminal in the mobile communication network and DMB broadcasting network represented by one or more of the longitude / latitude information, administrative location information, main building information, using GPS, After extracting the map image file of the simple image format including the location, adding or converting the necessary data in the map image file and providing a location notification service method for transmitting and outputting a location notification message including the same to the desired receiving terminal For the purpose of

Another object of the present invention is to determine its location represented by one or more of the longitude / latitude information, administrative location information, main building information using the built-in GPS receiver, and then stores itself or provides a map image from an external server It is to provide a DMB terminal capable of receiving a map image location that can receive, add or convert necessary data to a map image file and transmit it to a desired receiving terminal by SMS or packet communication.

In order to achieve the above object, the present invention uses a calling satellite DMB terminal connected to a GPS satellite, a receiving mobile communication terminal, a mobile communication network and a DMB broadcasting network, and the calling DMB terminal can receive / output a DMB broadcast signal. Performs wireless communication with the receiving mobile terminal, and (a) the calling party's DMB terminal uses at least one of longitude / latitude information, administrative location information, and main building information using the GPS signal received from the built-in GPS module and GPS satellites. A first step of determining the position of the self represented by; (b) After extracting or receiving a map image file including its location from a map DB stored in the memory of the calling party's DMB terminal or included in an externally linked map image providing server, the data necessary for the map image file is received. Adding or converting the map image file to generate a secondary map image file; (c) generating a location notification message including a map image file, a secondary map image file, and caller information; And (d) a fourth step of transmitting / outputting the location notification message generated through the mobile communication network to a desired receiving terminal, wherein the location notification service using the map image transmission in the DMB broadcasting network and the mobile communication network is provided. Provide a method.

In addition, according to a first embodiment of the present invention, a GPS satellite, a receiving side mobile communication terminal, a calling side DMB terminal connected to a mobile communication network and a DMB broadcasting network, comprising: (a) at least one capable of receiving a GPS signal and a DMB broadcasting signal; A control unit including an antenna element, (b) a GPS module comprising a GPS positioning program, (c) a memory for storing data, (d) a map image location application, and (e) data transmission and reception with a mobile communication network. (F) a DMB receiving module for outputting broadcast contents after receiving / processing a DMB broadcasting signal from a DMB broadcasting network; and an application program drives a GPS module according to a sender's location notification message input command. Calculate your current location, extract the map image file containing your current location from the map data stored in the map DB stored in memory, and then Add the necessary data to the file or convert the map image file to create the secondary map image file, generate the location notification message including the map image file and the secondary map image file, and generate the location notification using the communication module Provided is a DMB terminal for providing a location notification service using a map image, characterized in that a message is transmitted to a specific receiving mobile terminal.

In addition, according to a second embodiment of the present invention, a GPS satellite, a receiving side mobile communication terminal, a calling side DMB terminal connected to a mobile communication network and a DMB broadcasting network, comprising: (a) one or more capable of receiving a GPS signal and a DMB broadcasting signal; A control unit including an antenna element, (b) a GPS module comprising a GPS positioning program, (c) a memory for storing data, (d) a map image location application, and (e) data transmission and reception with a mobile communication network. (F) a DMB receiving module for outputting broadcast contents after receiving / processing a DMB broadcasting signal from a DMB broadcasting network; and an application program drives a GPS module according to a sender's location notification message input command. Calculate your current location, send your current location information to the map image providing server linked to the outside and in response to the map containing your location After receiving the unknown file, add the necessary data to the map image file or convert the map image file to generate a secondary map image file, generate a location notification message including the map image file and the secondary map image file, The present invention provides a DMB terminal for providing a location notification service using a map image, wherein the location notification message generated using the communication module is transmitted to a specific receiving side mobile communication terminal.

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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 and a DMB broadcasting network according to the present invention.

The entire system according to the present invention includes four or more visible GPS satellites 200, a receiving mobile communication terminal 210 ', a base transceiver station (BTS) 221, and a base station controller (BSC). GPS function with a built-in CDMA mobile communication network 220 including a Station Controller 222 and a Mobile Switching Center (MSC) 223, a DMB broadcasting network 230, and an application program for performing functions according to the present invention. It consists of the calling party's DMB terminal 210 and, if necessary, may further include a map image providing server 240 including a map DB 510 and linked to the CDMA mobile communication network or the DMB broadcasting network. Of course, the map image providing server 240 may be implemented as a component of a CDMA mobile communication network or a DMB broadcasting network.

In addition, an internet network such as an interworking device (IWF), a WAP gateway, or the like may be linked to the CDMA mobile communication network 220 so that the mobile communication terminal may use the wireless Internet, and connects the CDMA mobile communication network with the DMB broadcasting network. It may also be provided with a predetermined network interlocking device.

In the present embodiment, the mobile communication network is described as a CDMA mobile communication network, and the calling / receiving terminal is described as operating in such a CDMA method, but is not limited thereto. The GSM mobile communication network, TDMA mobile communication network, It is a broad concept that includes any mobile communication network that relays wireless data between terminals such as IMT-2000 mobile communication network, W-CDMA mobile communication network, and high speed (HPi) mobile communication network. It should be interpreted as.

The receiving side mobile communication terminal 210 'is a CDMA, GSM, TDMA, IMT such as PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, Hand-Held PC (CDMA-2000) phone, etc. -2000, W-CDMA, ultra-high speed (HPi) mobile communication is a concept that includes a variety of mobile terminals that operate in the manner.

In addition, the receiving mobile terminal 210 'does not need to include a GPS module or a DMB receiving module, and it is possible to send and receive SMS (or CDMA 1x line transmission or 1x EV-DO packet transmission) and a simple map according to the present invention. Anything that has the ability to print image files is possible. The receiving mobile terminal performs a function of receiving a location notification message including a map image file from the calling DMB terminal via the mobile communication network and outputting the location notification message. However, if necessary, it may be further provided with a function of automatically making a call to the caller's phone number included in the location notification message.

On the other hand, the originating DMB terminal 210, which is the core of the present invention is a GPS module capable of receiving a GPS signal from the GPS satellite 200 and calculating a location based on the DMB satellite, in addition to the components of a typical mobile communication terminal. Or DMB receiving module capable of receiving / processing and outputting DMB broadcast signal from a Gap Filler.

As a GPS module, a chip that adds a GPS positioning function called 'gpsOne' to the MSM 3300, a Qualcomm CDMA modem chip, can be used.The GPS signal from the base station or the GPS satellite 200 together with data communication by CDMA can be used. It can receive a, and can calculate its current position by using the GPS positioning program installed inside. In addition, the above-described GPS positioning program can receive a signal related to error correction from an external reference station, etc. to perform more accurate positioning according to A-GPS, DGPS, dual differential GPS, etc., and correct the measured position accordingly. have.

In addition, the GPS module of the calling party's DMB terminal only receives the GPS signal, and transmits the received GPS signal to the positioning server of the LBS platform linked to the outside (i.e., linked to the mobile communication network or the DMB broadcasting network) in response thereto. The location of the calling DMB terminal may be received.

The DMB receiving module has a form of a system on chip (SoC) embedded in a mobile communication terminal, and has a function of tuning and recovering a desired signal among DMB signals transmitted from a DMB satellite or a terrestrial repeater. , Commercial products developed by Samsung Electronics and Toshiba Corp. can be used. The configuration and function of the DMB receiving module will be described in detail with reference to FIG. 4.

In addition, the calling-side DMB terminal may have a function of storing map images of various regions and extracting / outputting a map image file including the corresponding location when the location is determined (first embodiment). Of course, if the map image cannot be stored due to the limited capacity of the memory, the measured location information may be transmitted to the external map image providing server, and a map image file including the corresponding location may be received in response thereto. 2 Example)

In addition, the calling party DMB terminal 210 according to the present invention has various additional functions, which will be described in detail below with reference to FIG. 3.

The CDMA mobile communication network 220 according to the preferred embodiment of the present invention is responsible for data brokerage between the service providing server 250, the receiving mobile communication terminal 210 'and the calling DMB terminal 210, and the base station transmitter ( 221, base station controller 222, mobile switching center 223 and the like. In addition, a short message transmission center (MC) may be additionally included to transmit the location notification message in an SMS format if necessary.

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 that performs the back.

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 subsystem such as a Central Control Subsystem (LOC), a Location Registration Subsystem (LRS) that performs a function of storing and managing information about a mobile subscriber. 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.

Inter-working function (IWF) is interworking with wired / wireless communication network including CDMA mobile communication network 220 and the Internet, public switched telephone network, Packet Switched Public Data Network (PSPDN), etc. It performs the interface function for.

In the above, the mobile communication network has been described as a CDMA mobile communication network including BSC, MSC, MC, IWF, etc. As described above, other mobile communication networks such as GSM, IMT-2000, W-CDMA, HPi, etc. may be used. MSC, MC, IWF, etc. may be replaced by other components having the same function in each mobile communication network.

In addition, although not shown, the CDMA mobile communication network according to the present invention may further include or interwork with an LBS platform for providing various location-based services. The LBS platform is a platform for providing various location-based services to a mobile communication terminal connected through a mobile communication network, and includes a positioning server (PDE), a positioning center (MPC), and an application. Server (Application Server).

The map image providing server 240 according to the present invention recognizes the location information of the originating DMB terminal included in the request when the map image transmission request is received from the originating DMB terminal, and transmits it with reference to the interworking map DB or GIS. It is a kind of application server that generates a map image file including the terminal location and transmits it to the calling DMB terminal.

Of course, such a map image providing server 240 is used only for the second embodiment of the present invention, and the map image of several regions is already stored in the memory of the calling party's DMB terminal, thereby directly extracting the map image from the memory. In one embodiment, it may be omitted.

In the case of satellite DMB, the DMB broadcasting network 230 is composed of a satellite DMB broadcasting center that transmits broadcast contents to the satellite as Ku-Band, and a ground filler (Gap Filler) for DMB satellites and shadowed areas. It consists of terrestrial DMB broadcasting center that sends broadcasting contents as VHF signal. In addition, as described above, a predetermined network interworking device for interworking with the mobile communication network may be further provided.

3 is a functional block diagram of a calling party DMB terminal for providing a service according to the present invention.

The calling party DMB terminal 210 is basically a mobile terminal for receiving DMB broadcasts and mobile wireless communications, and includes one or more antenna elements 310 capable of receiving wireless communication signals, GPS signals, and DMB broadcast signals, and a GPS module. And 320, a memory 330 for storing data, a controller 340 including a map image location notification application program, a communication module 350 for transmitting and receiving data with a mobile communication network, and a DMB broadcast signal. And a DMB receiving module 360 for processing and outputting broadcast content.

The antenna element 310 is a radio communication signal from several hundred MHz to 2 GHz, GPS satellite signals of L1 frequency (1.57542 GHz; C / A code) and L2 frequency band (15.7542 GHz; P code) according to the communication method, 2.6 Since the DMB broadcast signal of the GHz band must be simultaneously received, it may be composed of one or more antenna components. In addition, using a planar inverted F antenna or a modified antenna thereof, which is recently used, it is possible to receive the above-described multiple frequency bands with one antenna or wideband frequency reception.

The GPS module 320 is implemented as a GPS receiver comprising an arithmetic unit with a GPS positioning program for calculating a current position from a GPS signal received from the antenna element.

The GPS positioning program receives the C / A code or P code received from the GPS satellite, generates the same code (PN code), and compares the satellite signal with the received satellite code to arrive at the receiver. Measure the time spent. 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. (P code included in L2 frequency is SA removed)

When the correct distances for four or more visible GPS satellites are calculated, a point on the earth's surface is determined by triangulation, which is the position of the GPS receiver, i.e. the originating DMB terminal.

According to this simple GPS positioning algorithm, an error of about 100m may occur, and A-GPS (Assisted GPS), which receives error information from a reference station located near the GPS receiver and removes the error based on it, for more accurate positioning. ) Or DGPS (Differential GPS) or the like can be used. According to this method, a horizontal precision of 2 to 30 m can 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 program installed in the calling party's DMB 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 controller 340 is a kind of microprocessor, and an application program embedded in the controller is configured to generate / send a location notification message including a map image file extraction function, a map image file processing function, and an extracted / processed map image file. Have a function.

The map image file extraction function is again divided into the first embodiment and the second embodiment. In the first embodiment of the present invention, the location information (longitude / latitude, administrative name) of the originating DMB terminal received by the application program from the GPS module is provided. Etc.), a function of extracting a map image file having a predetermined size from a map image stored in a memory of a calling party's DMB terminal.

On the other hand, the second embodiment is a case in which a large map image file cannot be stored in advance due to memory limitations of the calling party's DMB terminal. In this case, the application program sends a map image request signal including current location information received from the GPS module ( Transmitting to an external map image providing server 240 through a mobile communication network, and receiving a map image file of a predetermined size / format / accumulation including a corresponding location in response thereto.

In addition, as an intermediate form between the first embodiment and the second embodiment, the LBS platform of the CDMA mobile communication network periodically checks the location of the calling party's DMB terminal such as once a day, and then checks the location of the corresponding DMB terminal (for example, Daegu Metropolitan City). Automatically pushes the entire map image to the corresponding terminal, and stores it in the memory, and when a request for location notification can be performed by extracting the required map image file therefrom.

The map image file processing function converts the map image file extracted by the application program into physical map, data size, format, and resolution of the map image file to meet the specifications, screen size, and memory capacity of the receiving terminal. It can be subdivided into a data conversion function for generating an image file, and a data addition function for adding a predetermined image display or a text display indicating the sender's position to the extracted / processed map image file.

The map image file according to the present invention preferably has a data size of 100 KByte or less so that it can be transmitted in a short message (SMS) format, JPG, BMP, TIFF, GIF so that the receiving terminal of all specifications can output the image It is desirable to have a general image file format such as. However, the present invention is not limited to this size and format, and may be implemented in other ways as long as the receiving terminal can receive / output.

The location notification message generation / send function creates a location notification message by adding the final map image file extracted / processed by the application, the caller's information (name or phone number), and additional text / voice messages entered by the caller if necessary. After that, it converts the data to match the transmission format and transmits the data to the receiver mobile communication terminal designated by the sender via the mobile communication network. Converting data to conform to the transmission format means, for SMS transmission, Teleservice Identifier, which is a service identifier such as voicemail or general message, to comply with the protocol defined in TIA / EIA / IS-637 and supplemented by TSB 79. This means converting to a transport layer message including an originating address, a bearer reply option, and bearer data. In addition, when transmitting in the CDMA 1x circuit method or 1x EV-DO packet format, it means that the data is converted to match the predetermined format.

In addition to the normal data, the memory 330 of the calling party's DMB terminal not only has a map DB storing map images of various regions used in the present invention, but also a message (extracted / processed) before transmitting a location notification message. Map image files).

The communication module 350 is the same as a conventional mobile communication terminal, and transmits / receives voice and data signals to and from the mobile communication network in one of CDMA, GSM, TDMA, IMT-2000, W-CDMA, and HPi mobile communication. In the present invention, a separate function of transmitting the location notification message generated under the control of the controller 340 to the receiving mobile terminal.

The DMB receiving module 360 functions to receive and tune a desired signal from a DMB signal transmitted from a DMB satellite or a terrestrial repeater, and to process / restore the signal to output broadcast contents. This will be described in more detail with reference to FIG. 4.

Each component of the calling party DMB terminal, in particular, an application program, may be written in software of a predetermined programming language used in the terminal such as C, C ++, Java, Visual Basic, and Visual C, and may be implemented in the terminal hardware. There is no restriction on the implementation type as long as it has functionality.

Recently, the memory capacity of mobile communication terminals and DMB terminals with communication functions has increased from several hundred MBytes to several GBytes, and the performance of the CPU has been dramatically improved, so that the above-mentioned application programs are embedded or, if necessary, various map data in the memory. It would be possible to implement a map database with

4 is a functional block diagram of a DMB receiving module embedded in a calling party DMB terminal according to the present invention.

The DMB receiving module may be implemented in the form of a system-on-chip in hardware. However, the function of the DMB receiving module may be LNB, 411, A / D converter 413, QPSK demodulator 414, weaving / lead. Solomon decoder 415, demultiplexer 416, MPEG-2 decoder 417, video board 418, character decoder 419, microprocessor 420, multiplexer 421 and the like.

A plurality of DMB broadcast satellites or Gap Fillers output a transport stream as a broadcast signal multiplexed into multiple channels, and the output transport stream is received by the antenna element 310 of the DMB terminal, The low noise block-down converter (LNB) 411 converts the signal to 1 GHz and then amplifies the low noise.

A tuner 412 tuned to a specific frequency by the user's tuner receives a signal from the LNB 411 and outputs only a signal corresponding to the tuned frequency, and the tuned analog signal is an AD converter (A). A quadrature phase shift keying (QPSK) demodulator 414 is converted to a digital signal at the &lt; RTI ID = 0.0 &gt; D / D Conveter &lt; / RTI &gt; 413 and performs a phase demodulation to remove a carrier component from the converted digital signal.

The digital signal output from the demodulator 414 is passed through a concatenated convolutional / reed-solomon decoder 415 to correct errors generated during transmission by noise or interference. The transport stream decoded by the concatenated convolutional / lead-solomon decoder is inputted to a demultiplexer (DeMux) 416, which is separated into a desired image data packet, a voice data packet, and a text data packet.

The image data packet separated by the demultiplexer 416 is input to the MPEG-2 (Motion Picture Expert Group-2) image decoder 417 and decoded, and the decoded image data is input to the image board 418 again. It is converted to a format suitable for the display and then sent to the display.

The voice data packet separated by the demultiplexer 416 is input to the MPEG-2 voice decoder 417 and decoded, and the decoded voice data is input to a D / A converter and converted into an analog signal. Is output.

Since the character data packet separated by the demultiplexer 416 is compressed, it is input to the character decoder 419 which decompresses it, and then decoded. The decoded character data packet is transmitted to the microprocessor 420. The microprocessor 420 receives the decoded text data packet, extracts original text data, and performs a predetermined signal processing process so that it can be displayed on the image board 418.

The signal processed text data is transmitted back to the multiplexer 421, which is to be multiplexed together with the image data output from the MPEG-2 image decoder 417 and transmitted to the image board 418. The multiplexed text data and image data are displayed together on the terminal screen via the image board.

Accordingly, the image board 418 should have a function of receiving image data and text data from the multiplexer 421 and outputting the image data and the text data on the screen.

5 is a functional block diagram of the map image providing server 240 used in the second embodiment of the present invention.

That is, as in the first embodiment of the present invention, since the memory capacity and CPU performance of the calling party DMB terminal are sufficient, several map images are already stored in the terminal memory, and a corresponding map image file is generated based on the determined position. In this case, the map image providing server of FIG. 5 may be omitted.

The map image providing server 240 is a server device that is implemented as a component of a mobile communication network, an LBS platform, or a DMB broadcasting network, or is linked thereto. The map image providing server 240 may include an internal map DB 510 or an external map DB. After receiving the map image file transmission request including the current location from the DMB terminal, it extracts the map image including the location from the map DB and transmits it to the caller DMB terminal.

To this end, the map image providing server 240 includes a data receiver 520, a map image generator 530, and a map image transmitter 540, in addition to the map DB 510, and a location calculator if necessary. 550 may further include.

The map DB 510 linked to the map image providing server or the map DB in the memory of the calling party's DMB terminal stores maps of all regions or specific regions in Korea in multiple scales, and queries such as the longitude and latitude, administrative names, and major buildings. You can extract the map of the desired area by using (Query). The map DB 510 refers to a general data structure implemented in a storage system (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.

Map DB 510 of the present invention is composed of a plurality of map images matched with the longitude / latitude as a reference, each map image has a variety of accumulation, may be stored in accordance with the administrative name, the main building name, etc. .

The data receiver 520 receives the request for the map image location notification service transmitted from the calling DMB terminal via the mobile communication network and transmits the request to the map image generator 530. In addition, the map image providing server may further include a location calculation unit 550 for determining the location if necessary, that is, after receiving the GPS signal from the calling DMB terminal. When the GPS module of the location calculating unit 550 does not have a location calculation function, the location calculating unit 550 receives the GPS signal from the calling DMB terminal and then calculates the location of the calling DMB terminal in the aforementioned manner. The calculated position information is transmitted to the map image generator 530.

The map image generator 530 extracts the map image of the corresponding location from the map DB using the location information of the calling party DMB terminal location information (longitude / latitude, administrative name, etc.) received from the location calculating unit or the calling party DMB terminal. It converts the image into a form suitable for output on the screen of the receiving terminal, thereby generating a map image file. Map image files can have formats such as JPG, BMP, 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 originating DMB terminal on the generated map image.

The map image transmitter 540 transmits the map image file generated through the CDMA mobile communication network to the calling party's DMB terminal. The transmission method is a CDMA 1X line transmission method or a CDMA 1x EV-DO packet data format in the wireless Internet. If the file size is small, it may be transmitted in a short message (SMS) format.

The service providing server 240 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 some component in the mobile communication network, or implemented in the form of a general web server The interworking device may be interworked with the mobile communication network.

The above-mentioned components for each function (data receiving unit, location calculating unit, map image file generating unit, map image transmitting unit) are written in software of a predetermined programming language such as C, C ++, Java, Visual Basic, Visual C, and a service providing server. It can be implemented in the hardware of the, and as long as it has the above-described function is not limited to the implementation form.

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

First, the calling user of the calling party DMB terminal selects a map image location notification service menu from the menu of the calling party DMB terminal (S610). Of course, at this time, the application program of the calling party DMB terminal may 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.

When the map image location service is selected, the application program of the calling party's DMB terminal operates the GPS module to receive GPS signals from three or more visible GPS satellites and calculates the terminal's current location using a positioning program. (S620)

Then, the application program of the calling party's DMB terminal extracts a map image file including the corresponding location from the map DB stored in the memory (first embodiment), or transmits the corresponding location information to an external map image providing server. In response to the map image file including the corresponding location is received (second embodiment) (S630)

If there is a sender's map image processing instruction, the map image may be processed according to the command to generate a processed map image file, and an additional message input of the sender may be received (S640 and S650).

"Processing" of a map image means that the map image file displays a predetermined image or text indicating the current location of the calling party's DMB terminal (adds data), or the physical size and data capacity of the map image file to meet the specifications of the receiving terminal. (Data conversion) means changing the resolution, file format, and so on.

Before and after the map image file extraction / processing, the caller inputs the telephone number of the receiving mobile terminal (S660). However, in connection with FIG. 6, the input of the receiving terminal telephone number is processed after the processing of the map image file. Although ordered, the present invention is not limited thereto, and may be performed after the final location notification message is generated, or even before the location calculation.

The application program of the calling party's DMB terminal adds the sender's own information (name, phone number, etc.) to the extracted / received map image file or the processed secondary map image file (S670). The location notification message is preferably in short message (SMS) format, and may include additional text / voice messages entered by the caller if necessary, or caller callbacks where the recipient can request voice calls directly to the caller's terminal. It may also contain data. 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 would be to include an additional message, "Save me."

In addition, as a method of adding caller information to a location notification message, a method of automatically adding a caller's application using a mobile identification number (MIN) stored in a memory, etc. A method of adding by input and a method of adding a component of the mobile communication network (Mobile Switching Station, LRS, etc.) in the process of mediating the location notification message transmission may be used.

Then, the application program of the calling party's DMB terminal receives the telephone number of the calling party's terminal from the caller and receives the final number generated by one of SMS transmission, CDMA 1x line transmission, and CDMA 1x EV-DO packet transmission. The location notification message is transmitted to the corresponding receiving terminal (S680). The receiving terminal receiving the location notification message may output the caller information and the map image indicating the location of the caller on the screen, and store the corresponding location notification message in the memory according to the selection of the receiver (S690). The map image file transmitted from the caller's DMB terminal is output directly on the receiver's screen together with a message so that the caller's location can be checked in real time without reconnection to the server.

Of course, the location notification message or the map image file generated according to the caller's selection may be separately stored in the memory of the calling party's DMB terminal, and the sender may later recall and read the stored map image file.

FIG. 7 illustrates an example of a user interface screen when providing a map image location notification service according to the present invention. FIGS. 7A to 7D correspond to a calling party DMB terminal screen, and FIG. 7E corresponds to a receiving mobile terminal screen. do.

As shown in Figure 7a, the caller selects the "(map image) location notification service menu" according to the present invention from among various functions built in the DMB terminal. In this case, as shown in FIG. 7B, the menu of the calling party's DMB terminal includes one of a conventional callback location notification service (2.callback location notification service) and a service according to the present invention (1.map image location notification service). It is desirable to be able to choose.

When the service according to the present invention is selected in FIG. 7B, an application program of the calling DMB terminal calculates a current position by driving a GPS module and displays a current position from a map DB or an external map image providing server stored in a memory. Extract or send image files. In the meantime, as shown in FIG. 7C, a guide message indicating that the process is being performed is displayed.

After the positioning and extraction / transfer of the map image file are completed, a map image showing the current location (indicated by an arrow) of the current calling party DMB terminal is displayed on the calling party DMB terminal screen as shown in FIG. 7D. In this state, the sender can use the "1. Process Map Image" menu to process the map image file (convert data or add data), or select "3. Enter additional message" to add a text message to the recipient. Can be entered.

Also, select "2. Enter Recipient Phone Number" to enter the phone number of the receiving terminal to receive the location notification message, and if necessary, select "4. Save map" to separate the map image into the calling party's DMB terminal. You can also save.

After all the inputs are completed, if "5. Confirm (Send)" is selected, the application program generates a final location notification message and transmits it to the receiving mobile communication terminal via the mobile communication network.

FIG. 7E illustrates a state in which a location notification message is transmitted and displayed on the screen of a receiving mobile communication terminal. The caller information is shown as "06/23 14:00 location message of 011-9882-1111 of Hong Gil-dong". Text including time and location, prompts for location notification messages, and a map image showing the caller's location, along with additional messages from the sender, such as "I don't know where." Can be output.

The received location notification message is stored in the receiving terminal, it is preferable to be able to read again later if necessary.

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 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 and the cost is also paid by the caller. In an emergency situation, it is possible to prevent the disadvantage that the location notification is ignored by the receiver.

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. 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 calling party's DMB terminal and the receiving terminal, unlike the prior art, which requires reconnecting to the server again in the future, the map image of the stored sender can be directly output / confirmed. It is convenient.

Claims (35)

A source DMB terminal connected to a GPS satellite, a receiving mobile terminal, a mobile communication network, and a DMB broadcasting network, wherein the calling DMB terminal can receive / output a DMB broadcast signal and perform wireless communication with the receiving mobile terminal. Performing, (a) The first DMB terminal determines a location of itself by using at least one of a longitude / latitude information, administrative location information, and main building information by using a GPS signal received from a built-in GPS module and a GPS satellite. step; (b) After extracting or receiving a map image file including its own location from a map DB stored in the memory of the calling party's DMB terminal or included in an externally linked map image providing server, it is necessary for the map image file. Adding data or converting the map image file to generate a secondary map image file; (c) generating a location notification message including the map image file, the secondary map image file, and caller information; And (d) a fourth step of transmitting / outputting the location notification message generated through the mobile communication network to a desired receiving terminal; Method of providing a location notification service using a map image transmission in the DMB broadcasting network and mobile communication network comprising a. The method of claim 1, Positioning in the first step includes a simple GPS positioning method, a positioning method using DGPS (Differential GPS), a positioning method using A-GPS (Assisted GPS), and a double differential method (Double Differential GPS). Method of providing location notification service using map image transmission in DMB broadcasting network and mobile communication network, characterized in that performed by one or more The method of claim 1, In the first step, the calling DMB terminal transmits the received GPS signal to an external positioning server, and determines its own location by receiving its location information in response to the DMB broadcasting network and the mobile communication network. How to provide location notification service using map image transmission from. delete The method of claim 1, In the second step, the application program installed in the calling party's DMB terminal extracts the necessary map image file from the map data stored in the memory, or transmits its location information to the map image providing server, and then includes the map image including the corresponding location. Method of providing a location notification service using the transmission of the map image in the DMB broadcasting network and the mobile communication network characterized in that the transmission. delete The method of claim 1, In the second step, one or more of the physical size, data capacity, format, and resolution of the extracted / transmitted map image file to fit at least one of the specification, memory capacity, screen size, transmission capacity, and browser of the receiving mobile terminal. Method of providing a location notification service using the map image transmission in the DMB broadcasting network and mobile communication network, characterized in that for converting. The method of claim 1, In the second step, a method of providing location notification using map image transmission in a DMB broadcasting network and a mobile communication network, wherein a predetermined display or text indicating a location of a caller's DMB terminal is added to the first map image extracted / transmitted. The method of claim 1, The map image file has a format (format) of at least one of JPG, BMP, GIF, TIFF, and has a size of less than 100KByte, characterized in that the location notification service using a map image transmission in the DMB broadcasting network and mobile communication network. The method of claim 1, Receiving the location information service using the map image transmission in the DMB broadcasting network and the mobile communication network, characterized in that further comprising the step of receiving the receiving mobile terminal number entered by the caller to specify the receiving mobile terminal; Way. The method of claim 1, In the third step, providing the location notification service using the map image transmission in the DMB broadcasting network and the mobile communication network, characterized in that for generating the location notification message by combining the caller information and one or more additional message input by the caller. Way. The method of claim 1, The method of claim 4, wherein the mobile communication network extracts the sender information from which the location notification message is sent and adds the location information to the location notification message. The method of claim 11, The caller information is location information service providing method using a map image transmission in the DMB broadcasting network and the mobile communication network, characterized in that at least one of the caller's name, caller's telephone number. The method of claim 1, The location notification message includes the location information of the caller, the location information service providing method using the map image transmission in the DMB broadcasting network and the mobile communication network characterized in that it includes. The method of claim 1, Before or after transmitting the location notification message, storing the location notification message or map image file in a memory of a calling party's DMB terminal, further comprising: a map image in a DMB broadcasting network and a mobile communication network. Location notification service using a transmission method. The method of claim 1, The location notification message transmission in the fourth step is performed according to at least one of a short message (SMS) transmission method, a CDMA 1x line transmission method and a 1x EV-DO packet transmission method of a mobile communication network. Location notification service using a map image transmission in the communication network. The method of claim 16, In the case of the SMS transmission method, a location notification service using a map image transmission in a DMB broadcasting network and a mobile communication network, characterized in that for transmitting a location notification message through a traffic channel. An originating DMB terminal connected to a GPS satellite, a receiving mobile terminal, a mobile communication network, and a DMB broadcasting network. (a) one or more antenna elements capable of receiving GPS signals and DMB broadcast signals; (b) a GPS module containing a GPS positioning program, (c) a memory for storing data, (d) a control unit including a map image location notification application program, (e) a communication module for data transmission and reception with a mobile communication network; (f) a DMB receiving module for outputting broadcast contents after receiving / processing a DMB broadcasting signal from the DMB broadcasting network; The application program calculates its current position by driving the GPS module according to a caller's location notification message transmission command input, and generates a map image file including its current position from map data stored in the map DB stored in the memory. After extraction, add the necessary data to the map image file or convert the map image file to generate a secondary map image file, and generates a location notification message including the map image file and the secondary map image file, DMB terminal for providing a location notification service using a map image, characterized in that for transmitting a location notification message generated by using the communication module to a specific mobile terminal. An originating DMB terminal connected to a GPS satellite, a receiving mobile terminal, a mobile communication network, and a DMB broadcasting network. (a) one or more antenna elements capable of receiving GPS signals and DMB broadcast signals; (b) a GPS module containing a GPS positioning program, (c) a memory for storing data, (d) a control unit including a map image location notification application program, (e) a communication module for data transmission and reception with a mobile communication network; (f) a DMB receiving module for outputting broadcast contents after receiving / processing a DMB broadcasting signal from the DMB broadcasting network; The application program calculates its current location by driving the GPS module according to a caller's location notification message transmission command input, and transmits its current location information to an externally linked map image providing server and responds to it in response. After receiving the map image file including the location of the, add the necessary data to the map image file or convert the map image file to generate a secondary map image file, the map image file and the secondary map image file Producing a location notification message comprising a, DMB terminal for providing a location notification service using a map image, characterized in that for transmitting a location notification message generated using the communication module to a specific receiving side mobile communication terminal. delete The method of claim 18 or 19, In order to generate the secondary map image file, the application program may be configured to meet at least one of a specification, a memory capacity, a screen size, a transmission capacity, a browser, and a physical size of the extracted map image file. DMB terminal for providing a location notification service using a map image, characterized in that for converting at least one of data capacity, format, resolution. The method of claim 18 or 19, In order to generate the secondary map image file, the application program adds a predetermined display or text indicating the location of the caller's DMB terminal to the first map image extracted or transmitted. DMB terminal. The method of claim 18 or 19, The map image file has a format (format) of at least one of JPG, BMP, GIF, TIFF, DMB terminal for providing a location notification service using a map image, characterized in that the size of less than 100KByte. The method of claim 18 or 19, The application program is a DMB terminal for providing a location notification service using a map image, characterized in that for receiving a mobile number of the receiving mobile communication terminal input by the caller to specify the receiving mobile terminal to receive the location notification message. The method of claim 18 or 19, The application program DMB terminal for providing a location notification service using a map image, characterized in that further comprising at least one of the caller information and the additional message further input by the caller in the location notification message. The method of claim 18 or 19, DMB terminal for providing a location notification service using a map image, characterized in that the mobile communication network extracts the sender information sending the location notification message to the location notification message. The method of claim 25, The caller information is a DMB terminal for providing a location notification service using a map image, characterized in that at least one of a caller's name and a caller's telephone number. The method of claim 18 or 19, DMB terminal for providing a location notification service using a map image, characterized in that the location notification message includes the date and time information of the caller is determined. The method of claim 18 or 19, The application program before or after transmitting the location notification message, the location information message or the map image file DMB terminal for providing a location notification service using a map image, characterized in that for storing in the memory of the calling party DMB terminal. The method of claim 18 or 19, The location notification message is transmitted according to at least one of a short message (SMS) transmission method, a CDMA 1x line transmission method, and a 1x EV-DO packet transmission method of a mobile communication network. DMB terminal. The method of claim 30, In the case of the SMS transmission method DMB terminal for providing a location notification service using a map image, characterized in that for transmitting a location notification message through a traffic channel. The method of claim 18 or 19, The GPS module may be a calling party by at least one of a simple GPS positioning method, a positioning method using DGPS (Differential GPS), a positioning method using A-GPS (Assisted GPS), and a double differential system (Double Differential GPS). DMB terminal for providing a location notification service using a map image, characterized in that to calculate the current location of the DMB terminal. The method of claim 32, The location of the calling party DMB terminal DMB terminal for providing a location notification service using a map image, characterized in that represented by one or more of the longitude / latitude information, administrative location information, main building information. The method of claim 18 or 19, The DMB receiving module includes an LNB for low noise amplification of a received DMB signal, a tuner for tuning a broadcast signal, an A / D converter for converting an analog signal into a digital signal, and a QPSK demodulator for demodulating the received broadcast signal in a QPSK scheme. , A decoder for decoding the demodulated signal, a demultiplexer (DeMux), an MPEG-2 decoder, an image board, a microprocessor, and a multiplexer (Mux) for integrating several kinds of signals into one. DMB terminal for providing location notification service using. The method of claim 18 or 19, The antenna element is a radio communication signal from several hundred MHz to 2 GHz, GPS satellite signals of L1 frequency (1.57542 GHz; C / A code) and L2 frequency band (15.7542 GHz; P code), and 2.6 GHz, depending on the communication method. DMB terminal for providing location notification service using a map image, comprising one or more antenna components operating in each frequency band to simultaneously receive DMB broadcasting signals of a band, or broadband antennas operating in all the frequency bands .

Images