KR100590678B1 - Method and System for Providing Mobile Station Based GPS Service Updating Location Information of Mobile Telecommunication Terminal - Google Patents

Abstract

The present invention relates to a method and system for providing a terminal-based GPS service for updating location information of a mobile communication terminal.

A mobile communication terminal for receiving and positioning GPS radio waves using auxiliary data received from a mobile communication network, and transmitting location information to the mobile communication network; An LBS platform for receiving location information periodically or aperiodically from the mobile communication terminal and transmitting map information of a corresponding region to the mobile communication terminal; An LBS information providing server that receives the location information from the LBS platform and generates and transmits a message for personal navigation service using the received location information; And a short message service center configured to receive the personal navigation service message and transmit the received message to the mobile communication terminal, thereby providing a terminal-based GPS service providing system for updating the location information of the mobile communication terminal.

According to the present invention, in the personal navigation system service using the terminal-based GPS, the user's location information calculated by the terminal may be periodically or aperiodically reported to the LBS information providing server to receive information based on real-time location.

AGPS, Personal Navigation System, Server Connection Cycle, Terminal Based GPS, LBS Platform

Description

Method and system for providing terminal-based GPS service for updating location information of mobile communication terminal {Method and System for Providing Mobile Station Based GPS Service Updating Location Information of Mobile Telecommunication Terminal}

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

2 is a block diagram schematically showing an MS-Based GPS service system according to a preferred embodiment of the present invention;

3 is a block diagram briefly illustrating an internal configuration of a mobile communication terminal according to an embodiment of the present invention;

4 is an exemplary screen of a mobile communication terminal displaying a message for personal navigation service according to an embodiment of the present invention;

5 is a flowchart illustrating a process of providing an MS-Based GPS service according to a preferred embodiment of the present invention.

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

100: location based service system 110: GPS satellite

120, 210: mobile communication terminal 130, 222: base station transmitter

140, 224: base station controller 150, 230: mobile switching center

160: positioning server 200: MS-Based GPS service system

220: wireless base station 240: manganese interworking device

250: positioning server 260: LBS platform

262: map server 270: LBS information providing server

272: User Database 310: GPS Antenna

311: GPS receiver 312: flash memory

313: Ypyrom 314: Roman

315: key input unit 316: LCD display unit

317: Timer 320: Microprocessor

330: digital signal processing unit 340: baseband conversion unit

350: RF signal processing unit 380: RF antenna

The present invention relates to a method and system for providing a terminal-based GPS service for updating location information of a mobile communication terminal. More specifically, the personal navigation system (PNS) using MS-Based GPS collects and updates the location information of the mobile terminal periodically or aperiodically, and uses the updated location information of the mobile communication terminal. A method and system for providing a MS-Based GPS service providing a location based information service to a mobile communication terminal in real time.

In order to provide communication services such as the Internet beyond the recent space, many companies are spurring the development of a new technology called wireless Internet. Wireless Internet refers to an environment and technology that enables users to use Internet services through a wireless network while the user is on the move. The development of mobile phone-related technologies and the rapid increase in mobile phone penetration have further accelerated the development of this wireless Internet environment.

Meanwhile, among various wireless Internet services using a mobile communication terminal such as a cellular phone or a PDA, a location based service (LBS) is gaining much attention due to its wide utility and convenience. Location-based wireless Internet services can be used for rescue requests, response to crime reports, geographic information systems (GIS) for providing information on neighboring areas, differentiation of mobile communication charges according to location, traffic information, vehicle navigation and logistics control, location It can be used in various fields and situations such as customer relationship management (CRM).

In order to use the location-based wireless Internet service, it is essential to know the location of the wireless communication terminal. At present, a method of determining a location using wireless communication is a method using a global positioning system (GPS).

GPS is a system that can be located anywhere in the world by 24 GPS satellites orbiting the earth at an altitude of about 20,000 kilometers. GPS uses radio waves in the 1.5 GHz band, and on the ground there is a coordination center called Control Station, which collects and synchronizes information transmitted from GPS satellites. do. In general, triangulation is used as a method of positioning using a GPS system. Three satellites are required for triangulation, which requires a total of four GPS satellites, including one observational satellite for time error.

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

The conventional 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 positioning server 160, and the like.

The GPS satellite 110 is a satellite used to locate the mobile communication terminal 120 in GPS. 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. The three satellites are reserved for reserve.

The mobile communication terminal 120 is a terminal having a built-in GPS receiver for receiving navigation data from the GPS satellites 110. 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 positioning server 160 receives location information such as latitude and longitude coordinates from the mobile communication terminal 120, calculates the location of the mobile communication terminal 120, and provides a separate LBS platform for providing various LBSs. ).

On the other hand, the GPS described in FIG. 1 has the advantage that anyone can freely use it freely, there is no limit to the number of users, continuous positioning in real time, and relatively accurate position measurement is possible.

However, the lack of multi-path and visibility limits the ability to locate in the city center, makes it almost impossible to accurately position in places where satellites are not visible (such as out of radio waves), such as in tunnels or underground buildings. There is a problem that a large error occurs in the positioning state according to the arrangement of the satellite viewed from the receiver. In addition, the time to first fix (TTFF), which is the actual time required for the GPS receiver to determine its location in the first place, sometimes takes about several minutes to ten minutes or more. There is a problem that causes great inconvenience.

In order to compensate for the disadvantages of the GPS method, an A-GPS method for determining a location of a mobile communication terminal by combining resources of a mobile communication network with a GPS method has been developed and used. In the A-GPS method, the mobile communication terminal collects the information necessary for positioning at the same time from the GPS satellite and the mobile communication network so that the location can be determined three-dimensionally. Send and receive data or messages using the specified parameters.

The A-GPS method is a network-based handset assisted GPS (MS-Assisted Network-Based GPS) (hereinafter referred to as "MS-Assisted GPS") and a network-assisted handset-based GPS (MS-Based Network-Assisted GPS) (hereinafter, 'MS-Based GPS'). Both the MS-Assisted GPS method and the MS-Based GPS method receive GPS data from one or more satellites by receiving Ading data transmitted from a predetermined positioning server to locate a mobile communication terminal.

However, the two methods have different points in positioning after acquiring GPS radio waves. That is, the MS-Assisted GPS method transmits the acquired GPS radio waves to the communication network, and a predetermined positioning server installed in the communication network receives the GPS radio waves to determine the latitude and longitude coordinates of the mobile communication terminal and transmit the GPS radio waves to the mobile communication terminal. On the other hand, the MS-Based GPS method determines the latitude and longitude coordinates by using the GPS radio wave received by the mobile communication terminal, and when the auxiliary data value is not updated or when the map is not downloaded, the latitude and longitude coordinates are determined by the positioning server. Do not send to. Due to these features, the MS-Assisted GPS method and the MS-Based GPS method have the following advantages and disadvantages.

Since the MS-Assisted GPS method determines the location of the mobile communication terminal in the communication network, more accurately, the location determination server, the location of the mobile communication terminal can be continuously checked in the communication network, thereby providing various LBS services based on the identified location information. There is an advantage. On the other hand, in order to provide the LBS service in real time, the mobile communication terminal continuously transmits the GPS radio waves acquired to the communication network, and since the positioning is performed through the communication network, a time delay or load occurs in the communication network, thereby real-time LBS service. It is not suitable to provide.

The MS-Based GPS method is more suitable for the LBS service because it uses less network delay than the MS-Assisted GPS method because the mobile terminal performs its own location. can see. Therefore, the MS-Based GPS system is used for personal navigation systems. The personal navigation system is a system for providing various LBS services to an individual with a predetermined navigation terminal. The personal navigation system can display an individual's location on a map, display a range of maps based on the current location, and provide a destination. It is a system for guiding the shortest distance route to.

Accordingly, the mobile communication terminal having determined its location in the MS-Based GPS system transmits the location information to the communication network, and downloads and displays a predetermined range of maps based on the current location from a predetermined map server installed in the communication network. In addition, the mobile communication terminal does not connect to the communication network until it has deviated from the downloaded range of the map, and displays the positioning result performed by itself on the downloaded map. This MS-Based GPS method has the following disadvantages.

The mobile communication terminal using the MS-Based GPS method is connected to a positioning server for updating satellite information every 60 minutes according to the specification (Qualcomm standard). Therefore, since the mobile terminal does not report its location information for its own side every 60 minutes to the communication network, it is not suitable for providing a location-based information service to a user using a personal navigation system in real time.

The present invention collects and updates the location information of the mobile communication terminal periodically or aperiodically in a personal navigation system using MS-Based GPS, in real time using the updated location information of the mobile communication terminal An object of the present invention is to provide a method and system for providing an MS-Based GPS service that provides a location-based information service to a mobile communication terminal in real time.

According to a first object of the present invention, in a system for providing a terminal-based GPS service to a mobile communication terminal in an AGPS environment, receiving and positioning a GPS radio wave using auxiliary data received from a mobile communication network, A mobile communication terminal transmitting to a mobile communication network; A positioning server configured to generate and transmit the auxiliary data using terminal information received from the mobile communication terminal; An LBS platform for receiving location information periodically or aperiodically from the mobile communication terminal and transmitting map information of a corresponding region to the mobile communication terminal; An LBS information providing server that receives the location information from the LBS platform and generates and transmits a message for a personal navigation service using the received location information; And a short message service center for receiving and transmitting the personal navigation service message to the mobile communication terminal and updating the location information of the mobile communication terminal.

According to a second object of the present invention, a mobile communication terminal for transmitting location information by itself using AGPS, an LBS platform for receiving the location information, and an LBS information providing server for providing a terminal-based GSP service are connected through a mobile communication network. A method for providing a terminal-based GPS service, comprising: (a) receiving the location information transmitted periodically or aperiodically from the mobile communication terminal through the LBS platform; (b) generating a message for personal navigation service according to the location information by using the received location information; (c) assigning a specific TI to the message for the personal navigation service; And (d) transmitting the personal navigation service message to the mobile communication terminal through the mobile communication network.

According to a third object of the present invention, a mobile communication terminal using a terminal-based GPS service in a personal navigation system environment interoperating with an LBS platform, the mobile communication terminal comprising: a GPS antenna for receiving GPS radio waves transmitted from one or more satellites; A GPS receiver for calculating location information using the GPS radio waves received by the GPS antenna; A flash memory storing a personal navigation application which receives and stores a server connection period from a mobile communication network to the LBS platform, checks whether the server connection period has arrived, and connects the mobile communication terminal to the LBS platform; An epirom storing a personal navigation service message received from the mobile communication network; An LCD display unit which outputs the personal navigation service message under the control of the personal navigation application; And a microprocessor controlling to connect to the LBS platform when the server connection period arrives in association with the personal navigation application and to output map information received from the mobile communication network through the LCD display unit. It provides a terminal based mobile communication terminal for GPS.

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 block diagram schematically showing an MS-Based GPS service system 200 according to a preferred embodiment of the present invention.

MS-Based GPS service system 200 according to a preferred embodiment of the present invention is a mobile communication terminal 210, wireless access network 220, mobile switching center 230, network interworking device 240, positioning server 250 , An LBS platform 260, a map server 262, an LBS information providing server 270, and a short message service center 280.

The mobile communication terminal 210 transmits terminal information (MS Information) to the location determination server 250 through the mobile communication network to determine the location using the MS-Based GPS method. The location determination server 250 generates auxiliary data for location determination of the mobile communication terminal using the received terminal information and transmits the auxiliary data to the mobile communication terminal 210 through the mobile communication network. The mobile communication terminal receives GPS radio waves from one or more GPS satellites (not shown) using the received auxiliary data, and extracts navigation data included in the received GPS radio waves to determine its location.

In addition, the mobile communication terminal 260 having determined its location transmits the location information (latitude and longitude coordinates) to the LBS platform 260 through the mobile communication network and requests the download of the map. Thereafter, the map downloaded from the LBS platform 260 is displayed, and its position is displayed on the displayed map as a predetermined image.

On the other hand, the mobile communication terminal 210 according to a preferred embodiment of the present invention is equipped with a predetermined personal navigation application. The personal navigation application checks the server connection period previously stored or received from the mobile communication network, and periodically connects to the server to transmit location information for itself. Here, the server refers to the LBS platform 260 or LBS information providing server 270. In addition, the personal navigation application continuously checks whether the current location of the mobile communication terminal 210 deviates from the downloaded range of maps. When the current location of the mobile communication terminal 210 deviates from the downloaded map, the personal navigation application accesses the LBS platform 260 to provide its location information, and downloads and displays a new map.

On the other hand, the mobile communication terminal 210 according to an embodiment of the present invention is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, hand-held PC (Hand-Held PC), GSM (Global System for Mobile phones, wideband CDMA (W-CDMA) phones, CDMA-2000 phones, Mobile Broadband System (MBS) phones, notebook computers, and the like. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed. That is, the MS-Based GPS method according to an embodiment of the present invention may be applied to not only a synchronous mobile communication system and an asynchronous mobile communication system but also a fourth generation ALL-IP system.

An internal structure of the mobile communication terminal 210 according to the preferred embodiment of the present invention will be described in more detail with reference to FIG. 3.

A base station (BS) 220 includes a base station transmitter 222 and a base station controller 224. The base station transmitter 222 receives the location information transmitted from the mobile communication terminal 210 and transmits it to the base station controller 224. The base station controller 224 controls the base station transmitter 222, assigns and releases radio channels for the mobile communication terminal 210, controls the transmission output of the mobile communication terminal 210 and the base station transmitter 222, and soft cell off between cells. It performs soft handoff and hard handoff decision, transcoding and vocoding, and operation and maintenance of wireless access network.

Meanwhile, the base station transmitter 222 and the base station controller 224 according to the embodiment of the present invention have a configuration capable of supporting both a synchronous mobile communication system and an asynchronous mobile communication system. Here, in a synchronous mobile communication system such as CDMA 2000 1X, CDMA 2000 1x Evolution-Data Only (EV-DO), the base station transmitter 222 is a base transceiver station (BTS), and the base station controller 224 is a base station BSC (base station). Controller. In addition, in an asynchronous mobile communication system such as wideband CDMA (WCDMA), the base station transmitter 222 is a radio transceiver subsystem (RTS) and the base station controller 224 is a radio network controller (RNC). Of course, the base station transmitter 222 and the base station controller 224 according to an embodiment of the present invention is not limited thereto, and may include an access network of a GSM network and a fourth generation mobile communication system to be implemented in the future. .

The mobile switching center (MSC) 230 has a control function for enabling wireless base stations to operate efficiently and an interworking function with an electronic switch installed in a public switched telephone network (PSTN). The mobile switching center 230 receives data or a message transmitted from the mobile communication terminal 210 through the base station controller 224 and transmits the data or message to the positioning server 250 or the LBS platform 260 through the manganese interworking device 240. do. The mobile switching center 230 performs basic and additional service processing, incoming and outgoing call processing of a subscriber, location registration and handoff procedures, and interworking with other networks. The mobile switching center 230 according to the embodiment of the present invention may support both an IS (Interim Standard) -95 A / B / C system and a third generation and a fourth generation mobile communication network.

Inter-Working Function (IWF) 240 is an interface for interworking with a wired communication network including a mobile communication network and the Internet, a public switched telephone network, a packet switched public data network (PSPDN), and the like. Interfacing) function.

The Positioning Determination Entity (PDE) 250 receives terminal information such as the resolution of the wireless base station 220 from the mobile communication terminal 210 and transmits auxiliary data to the mobile communication terminal 210. . In more detail, a reference GPS antenna (not shown) is provided on the positioning server 250 side. Accordingly, the location determination server 250 that has received the terminal information of the wireless base station 220 from the mobile communication terminal 210 may receive information about the GPS satellites (coordinate information, ID code information, etc.) is searched and included in the "Provide Ephemeris" message defined in the IS-801-1 standard and transmitted to the mobile communication terminal 210. Here, the terminal information is specifically information about a pilot phase capability, a GPS acquisition capability, and a position calculation capability of the terminal.

On the other hand, the server connection period that the mobile communication terminal 210 periodically connects to the positioning server 250 or the LBS information providing server 270 is the MS-Based GPS between the mobile communication terminal 210 and the LBS platform 260 It can be received during the first exchange of the relevant parameter values. That is, the LBS platform 260 may exchange the server connection period in the process of exchanging parameter values, such as the MS-Based GPS positioning period with the mobile communication terminal 210.

The mobile communication terminal 210 receiving the "Provide Ephemeris" message extracts the information of the GPS satellites included in the message, receives the GPS radio wave transmitted by searching for the GPS satellites.

The mobile communication terminal 210 that receives the GPS radio wave from one or more GPS satellites determines its location using a built-in GPS positioning module. Then, the determined location information is transmitted to the LBS platform 260 to be described later through the mobile communication network to request a map download. The LBS platform 260 transmits the received location information to the map server 262, and the map server 262 generates a range of maps based on the location of the mobile communication terminal 210 based on the received location information. To the mobile communication terminal 210 through the LBS platform 260 and the mobile communication network.

The LBS platform 260 collectively refers to a kind of application server for providing an LBS service to the mobile communication terminal 210. The LBS platform 260 receives the latitude and longitude coordinates from the mobile communication terminal 210 and transmits the coordinates to the map server 262 or the LBS information providing server 270. In addition, the LBS platform 260 receives a map from the map server 262 and transmits it to the mobile communication terminal 210 through a mobile communication network, and functions of registering, deleting, and modifying a plurality of LBS information providing servers 270. And performs a charging function for the mobile communication terminal 210 using the LBS service.

The LBS information providing server 270 is a content provider (CP) server that provides an MS-Based GPS service to the mobile communication terminal 210. The LBS information providing server 270 receives location information of the mobile communication terminal 210 from the LBS platform 260. The received LBS service is provided to the mobile communication terminal 270 based on the received location information. Here, the LBS service provided by the LBS information providing server 270 may include various services such as geographic information service, shortest distance / time path service, point of interest service, and LBS-based advertising service.

In order to provide such an LBS service, the LBS information providing server 270 works with the user database 272. The user database 272 stores personal information, preference information, and the like of a user who has subscribed to the LBS information providing server 270 as a member. Here, the preference information is information related to a specific service that the user likes or wants, and is information that the user inputs or selects and registers at the registration stage. Therefore, the LBS information providing server 270 that receives the location information of the mobile communication terminal 210 considers the received location information and the symbol information stored in the user database 272 together and fits the symbol information at the corresponding location. Will be able to provide LBS services.

Meanwhile, the LBS information providing server 270 records LBS service information in a data burst message (DBM: Data Burst Message, hereinafter referred to as 'DBM') and transmits it. DBM is a message defined in IS-2000, and has a different structure for each access channel, paging channel, and traffic channel. Table 1 shows the structure of the DBM transmitted and received in the traffic channel.

Fields Length MSG_TYPE 8 ACK_SEQ 3 MSG_SEQ 3 ACK_REG One ENCRYPTION 2 MSG_NUMBER 8 BURST_TYPE 6 NUM_MSGS 8 NUM_FIELDS 8 CHARi 8 RESERVED One

In Table 1, "MSG_TYPE" is a field indicating that the message to be transmitted is DBM, and is set to '00000100' regardless of forward or reverse. "ACK_SEQ", "MSG_SEQ" and "ACK_REG" are fields for Layer 2 Signaling in IS-2000. "ENCRYPTION" is a field for setting the encryption mode used when allocating a traffic channel. "MSG_NUMBER", "BURST_TYPE", "NUM_MSGS" and "NUM_FIELDS" are fields in which attributes of the DBM are recorded. The message data actually transmitted is recorded in the "CHARi" field, and the "RESERVED" field is a spare padding field for adjusting the length of the message. In Table 1, the length unit of each field is a bit.

Meanwhile, the message data format recorded in the "CHARi" field may be implemented in various ways, and one or more tags may be defined so that the LBS service information screen displayed on the mobile communication terminal 210 may be variously changed. There will be.

The LBS information providing server 270 codes LBS service information to be transmitted to the mobile communication terminal 210 in the DBM structure shown in Table 1 and transmits the LBS service information to the mobile communication terminal 210 using a push technique. The push technique is a technique used in a short message service (SMS) and the like, and is a transmission technique that unilaterally receives regardless of whether the mobile communication terminal 210 is allowed to receive a call.

In addition, the LBS information providing server 270 allocates a preset Teleservice Identifier (TI) to transmit to the mobile communication terminal 210 to indicate that the transmitting DBM is a message for the personal navigation service. Accordingly, the mobile communication terminal 210 analyzes the TI assigned to the receiving DBM and confirms that the message is a message for personal navigation service.

The short message service center (SMSC) 280 transmits the DBM received from the LBS information providing server 270 to the mobile communication terminal 210 through the mobile communication network. That is, the SMSC 280 analyzes the received DBM to grasp the phone number of the mobile communication terminal 210, and connects the mobile communication terminal 210 with a home location register (HLR) (not shown). ) Stores the DBM by identifying the identification code of the wireless base station 220 is located (Store and Forward).

3 is a block diagram briefly illustrating an internal configuration of a mobile communication terminal 210 according to an embodiment of the present invention.

Mobile communication terminal 210 according to an embodiment of the present invention is a GPS antenna 310, GPS receiver 311, flash memory 312, EPI 313, ROM 314, key input unit 315, LCD Display unit 316, timer 317, microprocessor 320, digital signal processor 330, baseband converter 340, RF signal processor 350, speaker 360, microphone 370 and RF antenna 380 and the like.

The GPS antenna 310 receives GPS radio waves from one or more satellites and transmits them to the GPS receiver 311. In general, a satellite may be associated with a parabolic antenna, but GPS requires receiving radio waves from various satellites orbiting the earth, so it is not possible to use a high-gain, high-gain antenna such as a parabolic antenna. . GPS antennas usually have a semi-circular directivity on the top of the ground plain and receive preferential source polarizations transmitted from satellites.

The GPS receiver 311 receives the GPS data included in the received GPS radio wave from the GPS antenna 310 and converts the latitude and longitude position information and the time information of the mobile communication terminal 210 calculated through a predetermined process into the microprocessor 320. To pass). That is, the GPS radio waves transmitted from the GPS satellites include ID codes, orbital positions, and visual information of the GPS satellites, and the GPS receiver 311 detects a difference in arrival speed between radio waves emitted from a plurality of GPS satellites. Compute the position coordinates of the vehicle. Of course, the GPS processor 311 may be mounted on the digital signal processor 330, which will be described later, without the GPS receiver 311 as a separate device.

The flash memory 312 is a non-volatile memory having a high data processing speed, and has an operating system having a real-time processing function for the operation of the mobile communication terminal 210. And call processing software for processing functions related to call processing.

Meanwhile, the personal navigation application according to the embodiment of the present invention is also stored in the flash memory 312. As described above, the personal navigation application checks the server connection cycle received from the location determination server 250 and allows the mobile communication terminal 210 to access the LBS platform 260 through the mobile communication network when the corresponding cycle arrives ( Periodic connections). In addition, the personal navigation application is a region consisting of a minimum horizontal axis coordinate value and a vertical axis coordinate value and a maximum horizontal axis coordinate and a vertical axis coordinate value for a range of maps received through the LBS platform 260 (hereinafter referred to as 'critical coordinate range'). Check whether the position coordinate value of the mobile communication terminal 210 is out of the critical coordinate range.

The personal navigation application allows the mobile communication terminal 210 to access the LBS platform 260 even when the mobile communication terminal 210 is out of the critical coordinate range, even when the mobile communication terminal 210 is not at the periodic access point (non-periodic connection).

The mobile communication terminal 210 connected to the LBS platform 260 through the periodic or aperiodic connection described above transmits its location information for the final side. In this case, the LBS platform 260 receiving the location information of the mobile communication terminal 210 receives a new map through the map server 262 when the received location information is out of the previously transmitted map range (aperiodic access). By transmitting to the mobile communication terminal 210, it can also provide a new LBS service in real time based on the location. Of course, the LBS platform 260 may provide a new LBS service in real time based on the location when the location of the mobile communication terminal 210 is within the previously transmitted map range (periodic access).

Meanwhile, the personal navigation application according to the embodiment of the present invention may be coded in C language or implemented as a virtual machine (VM). When the personal navigation application is coded in C language, it can be linked with the OS software mounted in the flash memory 312 so that the contents of the "CHARi" field of the DBM received from the mobile communication network can be analyzed and processed and displayed on the screen. There will be. That is, the OS software analyzes the TI assigned to the received DBM and confirms that it is a message for the personal navigation service, and delivers the received DBM to the personal navigation application.

On the other hand, when the personal navigation application is implemented as a virtual machine, the OS software checks that the message is for a personal navigation service, and then delivers the DBM to the wireless Internet platform. The wireless internet platform analyzes the received DBM, delivers the recorded message contents to the personal navigation application, and displays the message contents received by the personal navigation application.

Here, the wireless Internet platform is a software that can be mounted in the flash memory 312, and provides a function for allowing the mobile communication terminal to freely use the wireless Internet. Such wireless Internet platforms include Wi-Fi (Wireless Internet Platform for Interoperability) and SKTelecom's Wi-TOP (Wireless Internet-Terminal Open Platform). Do. Wippi or Witap are coded in the Java language.

The EEPROM 313 is a non-volatile memory in which data for storage such as NAM (Number Assignment Module) parameters, phone numbers, names, and short messages are recorded. The ROM 314 stores variable and status information of a program generated in connection with driving various software mounted in the flash memory 312.

The key input unit 315 is provided with a plurality of key buttons for inputting various data such as numbers and letters. The LCD (Liquid Crystal Display) display unit 316 displays the operation state of the mobile communication terminal 210 including the reception strength, date, time, and the like of the radio wave. In addition, the LCD display unit 413 displays the LBS service information recorded in the DBM received by the mobile communication terminal 210.

The timer 317 is driven by the control of the microprocessor 420 which will be described later to measure or reset the time. That is, the personal navigation application continuously checks the timer 317, resets the timer 317 when a preset server connection period is reached, and connects the mobile communication terminal 210 to the LBS platform 260 in conjunction with the microprocessor 320. To be connected to In addition, the personal navigation application, in conjunction with the microprocessor 420, resets the timer 317 even when the position coordinate value of the mobile communication terminal 210 is out of the threshold coordinate range, and the mobile communication terminal 210 LBS. Control to be connected to the platform 260.

The microprocessor 320 controls the overall operation of the mobile communication terminal 210. In addition, the microprocessor 320 is linked to the personal navigation application, as described above, if the server connection period or the position coordinate value of the mobile communication terminal 210 is out of the critical coordinate range, the mobile communication terminal 210 is the LBS platform 260 To be connected to.

The digital signal processor 330 encodes or decodes voice and data, functions as an equalizer for removing multipath noise, and processes a digital data processing processor. to be. In addition, the digital signal processor 330 exchanges voice data SPEECH with the baseband converter 340 and receives data from the baseband converter 340 (RX DATA). The digital signal processor 330 performing the above-described function includes a mobile station modem (MSM) chip manufactured by Qualcomm.

The baseband converter 340 converts a signal transmitted and received between the digital signal processor 330 and the RF signal processor 350, the speaker 360, and the microphone 370 into a signal of the baseband band, and converts the digital-analog signal. It performs functions such as (DAC: Digital to Analog Conversion) and Analog to Digital Conversion (ADC). In addition, the baseband converter 340 transmits the transmission data (TXIQ) to the RF signal processor 350, and controls the power of the RF signal processor 350 (POWER) or automatically controls the gain (AGC). . The RF signal processor 350 receives the received signal RXIQ.

The RF signal processor 350 demodulates and amplifies the RF signal received from the RF antenna 380, modulates a transmission signal applied from the baseband converter 340, and transmits the modulated signal to a propagation space.

The speaker 360 outputs sound data transmitted from the baseband converter 340 as an audible sound, and the microphone 370 converts a user's voice input into an electrical signal.

4 is an exemplary screen of a mobile communication terminal displaying a message for personal navigation service according to an embodiment of the present invention.

4A, the user's current location is indicated in the direction of the arrow on the downloaded map, and the route to the destination to be taken is displayed in dark. In addition, a message for personal navigation service is displayed in text at the top of the screen. These personal navigation service messages are provided with appropriate information based on the current location of the user and the preference information registered by the user.

Meanwhile, as the user moves, the user navigation service message may be displayed differently as shown in FIG. 4B. The message for the personal navigation service shown in FIG. 4B is also provided based on the current location of the user and the preference information registered by the user. Of course, the message for the personal navigation service shown in FIGS. 4A and 4B may be provided at the same point.

5 is a flowchart illustrating a process of providing an MS-Based GPS service according to a preferred embodiment of the present invention.

Referring to FIG. 2 together, the mobile communication terminal 210 using the MS-Based GPS service according to an embodiment of the present invention transmits terminal information such as resolution to the positioning server 250 through the mobile communication network ( S500). The location determination server 250 generates auxiliary data using the terminal information received from the mobile communication terminal 210 and transmits the auxiliary data to the mobile communication terminal 210 (S502).

The mobile communication terminal 210 transmits the location information obtained by performing positioning using the received auxiliary data to the positioning server 250 (S504). The location determination server 250 receives the map generated by the map server 262 in cooperation with the map server 262 by using the received location information and transmits the map to the mobile communication terminal 210 (S506). The mobile communication terminal 210 displays and displays the current location on the map received through the mobile communication network (S508).

Meanwhile, the mobile communication terminal 210 displaying the map continuously determines whether a server connection condition is reached (S510). Here, the server connection condition is a server connection period received and stored by the mobile communication terminal 210 from the positioning server 250 or the position coordinate value of the mobile communication terminal 210 is out of the threshold coordinate range set in the received map. If it is.

If it is determined in step S510 that the mobile communication terminal 210 is the server connection condition, the mobile communication terminal 210 resets the timer 317 and accesses the LBS platform 260 (S512). The mobile communication terminal 210 connected to the LBS platform 260 transmits the final location information (S514). The LBS platform 260 receiving the final location information determines whether the current location of the mobile communication terminal 210 is out of the critical coordinate range (S516).

If the LBS platform 260 determines that it is out of the critical coordinate range as a result of the determination of step S516, the LBS platform 260 transmits the received final location information to the map server 262 to receive a new map generated by the map server 262 to receive the mobile communication terminal. Transmitted to 210 (S518). Otherwise, the LBS platform 260 transmits the received final position information to the LBS information providing server 270 when it is determined that the determination is made within the threshold coordinate range in step S516 (S520). Of course, the LBS platform 260 which has transmitted the new map in step S518 also transmits the received final location information to the LBS information providing server 270.

The LBS information providing server 270 generates a message for personal navigation service using the received final position information of the mobile communication terminal 210 and the symbol information stored in the user database 272 to generate the message for the personal navigation service through the SMSC 280. In step S522, it is transmitted to (210). The mobile communication terminal 210 receiving the message for the personal navigation service analyzes and displays the message for the personal navigation service.

The above description is merely illustrative of the present invention, and those skilled in the art to which the present invention pertains may various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. It is intended that the scope of the invention be interpreted by the following claims, and that all techniques falling within their scope shall be construed as being included in the scope of the present invention.

As described above, the conventional MS-Based GPS service has a disadvantage that it is inadequate to provide a real-time personal navigation service according to the user's movement because the connection period with the server is fixed to a large value, but according to the present invention, the connection period of the server is shortened. By adjusting and frequently updating the location information according to the user's movement, it has a feature suitable for real-time personal navigation service.

In addition, when the user is out of the range of the first map provided by the personal navigation service, it automatically connects to the server, transmits location information, downloads a new map, and provides a new location-based information service according to the updated location information. .

Claims (36)

In a system for providing a terminal-based GPS (MS-Based GPS) service to a mobile communication terminal in an AGPS (Assisted GPS) environment, A mobile communication terminal receiving and positioning a GPS radio wave using auxiliary data received through a mobile communication network, and transmitting location information to the mobile communication network; A positioning server (PDE: Positioning Determination Entity) for generating and transmitting the auxiliary data using terminal information received from the mobile communication terminal; An LBS platform for receiving location information periodically or aperiodically from the mobile communication terminal and transmitting map information of a corresponding region to the mobile communication terminal; An LBS information providing server that receives the location information from the LBS platform and generates and transmits a message for personal navigation service using the received location information; And A short message service center that receives the personal navigation service message and stores and forwards the message to the mobile communication terminal. Terminal-based GPS service providing system for updating the location information of the mobile communication terminal comprising a. The method of claim 1, The terminal information includes resolution information including at least one of pilot phase capability information, GPS acquisition capability information, and position calculation capability information of the mobile communication terminal. Terminal-based GPS service providing system for updating information. The method of claim 1, The LBS platform is a terminal based to update the location information of the mobile communication terminal, characterized in that for transmitting the server connection period to the mobile communication terminal at the time of the first exchange of the parameters (parameters related to the terminal-based GPS) with the mobile communication terminal GPS service providing system. The method of claim 1, The auxiliary data provides a terminal-based GPS service for updating the location information of the mobile communication terminal, characterized in that at least one of the coordinate information and the identification code information of the GPS satellites that can receive GPS radio waves from the wireless base station. system. The method of claim 3, wherein And the map information includes a critical coordinate range including a horizontal axis and a vertical axis longitude latitude coordinate value, and a horizontal axis and a vertical axis maximum latitude longitude coordinate value. The method of claim 1, The personal navigation service message is a data burst message (DBM: Data Burst Message) terminal-based GPS service providing system for updating the location information of the mobile terminal. The method according to claim 1 or 6, The UE-based GPS service providing system for updating the location information of the mobile communication terminal, characterized in that the personal navigation service message includes a teleservice identifier (TI) information defined as identification information for indicating that the message for the personal navigation service. . The method of claim 1, The LBS information providing server is a terminal-based GPS service providing system for updating the location information of the mobile communication terminal, characterized in that the user information stored in the preference information that is information about the desired service registered in the membership registration step. The method of claim 1, The terminal-based GPS service providing system to update the location information of the mobile communication terminal, characterized in that the map server for receiving the location information from the LBS platform to generate the map information and transmit to the LBS platform is further installed. Terminal based GPS service providing system. The method of claim 5, wherein The mobile communication terminal is updated with location information of the mobile communication terminal, characterized in that it is equipped with a personal navigation application that determines whether the server connection period or whether the location of the mobile communication terminal is out of the critical coordinate range. Terminal based GPS service providing system. The method of claim 10, The personal navigation application is configured to operate the mobile communication terminal to access the LBS platform through the mobile communication network at a time point when the server connection period is reached or out of the threshold coordinate range. UE-based GPS service providing system for updating. The method of claim 1, The mobile terminal includes a personal digital assistant (DA), a cellular phone, a personal communication service (PCS) phone, a hand-held PC (GPS), a global system for mobile (GSM) phone, and a wideband CDMA (W-CDMA) phone. Terminal-based GPS service providing system for updating the location information of the mobile communication terminal, characterized in that at least one of, CDMA-2000 phone, Mobile Broadband System (MBS) phone and a notebook computer. The method of claim 1, The mobile communication terminal and the positioning server is a terminal-based GPS service for updating the location information of the mobile communication terminal, characterized in that for transmitting and receiving LBS-related data including the auxiliary data according to the standard defined in IS-801-1 Provide system. A mobile communication terminal which transmits location information by self positioning using AGPS, an LBS platform receiving the location information, and an LBS information providing server providing a terminal-based GSP service are connected through a mobile communication network to provide a terminal-based GPS service. In the method, (a) receiving the location information transmitted periodically or aperiodically through the LBS platform from the mobile communication terminal; (b) generating a message for personal navigation service according to the location information by using the received location information; (c) assigning a specific Teleservice Identifier (TI) to the message for the personal navigation service; And (d) transmitting the personal navigation service message to the mobile communication terminal through the mobile communication network; Terminal-based GPS service providing method for updating the location information of the mobile communication terminal comprising a. 15. The method of claim 14, wherein in step (a) Periodic location information transmission is a terminal-based GPS service providing method for updating the location information of the mobile communication terminal, characterized in that for each server connection period received by the mobile communication terminal from the mobile communication network. 15. The method of claim 14, wherein in step (a) Aperiodic location information transmission is a terminal-based GPS service providing method for updating the location information of the mobile communication terminal, characterized in that when the mobile communication terminal is out of the threshold coordinate range set in the map information received from the mobile communication network. The method of claim 15, The server access period is provided when the mobile communication terminal first exchanges parameters related to the LBS platform and the terminal-based GPS, and provides terminal-based GPS service for updating the location information of the mobile communication terminal. Way. The method of claim 16, The threshold coordinate range is a terminal-based GPS service providing method for updating the location information of the mobile communication terminal, characterized in that the horizontal axis and the longitudinal axis of the minimum latitude and longitude coordinate value set in the map information and the horizontal axis and the longitudinal axis maximum latitude and longitude coordinate value. The method of claim 16 or 18, The LBS platform determines whether the received location information is out of the critical coordinate range, and when it is out of the critical coordinate range, updates the location information of the mobile communication terminal, wherein new map information is transmitted to the mobile communication terminal. UE-based GPS service providing method. The method of claim 14, wherein in step (b) The personal navigation service message is a data burst message (DBM: Data Burst Message) characterized in that for updating the location information of the mobile communication terminal terminal-based GPS service providing method. The method of claim 20, The data burst message is a terminal-based GPS service providing method for updating the location information of the mobile communication terminal, characterized in that one or more tags (tags) supporting various display forms are set. The method of claim 14, wherein in step (d) The personal navigation service message is stored and forwarded through a short message service center (Store and Forward), characterized in that for updating the location information of the mobile communication terminal terminal-based GPS service providing method. In the mobile communication terminal using the MS-Based GPS service in a personal navigation system (PNS) environment interoperating with the LBS platform, A GPS antenna for receiving GPS radio waves transmitted from one or more satellites; A GPS receiver for calculating location information using the GPS radio waves received by the GPS antenna; A flash memory storing a personal navigation application which receives and stores a server connection period from a mobile communication network to the LBS platform, checks whether the server connection period has arrived, and connects the mobile communication terminal to the LBS platform; An EEPROM for storing a message for personal navigation service received from the mobile communication network; An LCD (Liquid Crystal Display) display unit for outputting the personal navigation service message under the control of the personal navigation application; And A microprocessor that controls to connect to the LBS platform when the server connection period arrives in association with the personal navigation application and outputs map information received from the mobile communication network through the LCD display unit. Terminal-based GPS mobile communication terminal comprising a. The method of claim 23, The GPS receiver is a terminal-based GPS mobile communication terminal, characterized in that installed in the modem chip for the CDMA digital signal processing and call processing in the mobile communication terminal. The method of claim 23, The flash memory stores operating system (OS) software having a real-time processing function for operation of the mobile communication terminal and call processing software for processing a function related to call processing. Mobile terminal. The method of claim 23, The personal navigation application continuously checks whether the location information of the mobile communication terminal is out of the threshold coordinate range set in the map information, and operates to connect the mobile communication terminal to the LBS platform when it is out of the threshold coordinate range. Terminal based mobile communication terminal for GPS. The method of claim 26, The threshold coordinate range is a terminal-based GPS mobile communication terminal, characterized in that consisting of the horizontal axis and vertical axis minimum latitude and longitude coordinate values set in the map information and the horizontal axis and vertical axis maximum latitude and longitude coordinate values. The method of claim 25, The personal navigation application is a terminal-based GPS mobile communication terminal, characterized in that coded in at least one of C language or Java language (Java). The method of claim 28, And the operating system software outputs a personal navigation service message received through the personal navigation application when the personal navigation application is coded in the C language. The method of claim 28, The operating system software transmits a personal navigation service message received when the personal navigation application is coded in the Java language to a wireless internet platform embedded in the mobile communication terminal, and processes the message. terminal. The method of claim 30, And wherein the wireless internet platform extracts the message contents recorded in the CHARi field of the personal navigation service message received from the operating system software, and transmits the message contents to the personal navigation application for output. 32. The method of claim 30 or 31 wherein The wireless Internet platform is a mobile communication terminal for a terminal-based GPS, characterized in that at least one of Wi-Fi (Wireless Internet Platform for Interoperability) or Wi-TOP (Wire-Wireless Internet Terminal Open Platform) coded in the Java language. The method of claim 23, And a timer (Timer) for counting the server connection period is built in the mobile communication terminal. The method of claim 33, wherein And the timer is reset when the mobile terminal accesses the LBS platform. The method of claim 23, The personal navigation application is a terminal-based GPS mobile communication terminal, characterized in that for outputting the message for the personal navigation service together with the output screen of the map information. The method of claim 23 or 35, The map information is a terminal-based GPS mobile communication terminal, characterized in that the image format (Image Format).

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