JP4316565B2 - A program for causing a computer to execute processing for providing a navigation service - Google Patents

Description

  The present invention relates to a method for providing a navigation service using location information of a mobile communication terminal, and more specifically, using base station location information within a cell radius where a mobile communication terminal is located, and a user. The present invention relates to a method for providing a predetermined navigation service even when the operation of the GPS receiver is not smooth.

  The navigation system (Navigation System) is a system that provides information for traveling a vehicle such as a vehicle using an artificial satellite, and is also referred to as an automatic navigation system. Such a navigation system receives predetermined data from a GPS (global positioning system) satellite floating on the earth using a GPS receiver, and calculates its position based on the received data. There are many GPS satellites floating on the earth, but the transportation device can receive GPS signals from three GPS satellites regardless of the area on the earth, and the GPS received from the three GPS satellites You can calculate your position based on the signal. The navigation system provides various travel information to the transport device such as the vehicle based on the position information calculated in this way. Such a navigation system has been used mainly for position calculation and navigation of large moving bodies such as airplanes and ships, but has recently been widely used for automobiles and the like. The navigation system includes the current position information of the transport device, the route information from the current position of the transport device to the destination of the transport device, the map information related to the position information and the route information, the traffic situation information, etc. A variety of information is provided to users.

  In such a navigation apparatus, a user who intends to use a navigation service is generally provided with a GPS receiver for receiving a predetermined GPS signal from a GPS satellite. Usually, such a GPS receiver is designed to be installed in the user's car or the like, and provides a predetermined navigation service based on the user's location information calculated by the GPS receiver. Recently, mobile communication terminals incorporating such a GPS receiving module are also appearing one after another. Even in the case of a PDA (Personal Digital Assistant), a GPS receiving function can be performed by mounting a predetermined GPS module.

  Such a conventional navigation service has the following problems.

  (1) When power is first applied to the GPS receiver, or when the GPS receiver is not used for a long time or the GPS receiver is turned off and moved for a long distance (usually about 300 miles) A predetermined time is required for the GPS receiver to receive GPS signals from one or more GPS satellites and calculate the current position of the user. In the case of so-called “cold start”, such a cold start may or may not have any information about the GPS satellites even if the GPS receiver has no information about the GPS satellites. Meaning that the GPS receiver must be reinitialized. At a cold start, the GPS receiver scans all the GPS satellites, collects information on available GPS satellites, and calculates the position of the GPS receiver after going through a process such as synchronizing the time with the GPS satellite. However, in such a case, it takes 90 seconds at the shortest and more than 10 minutes at the maximum until the GPS receiver receives the signal from the GPS satellite and grasps its position. Occurs. In the case of a GPS receiver used in the Asian region, it will start calculating its current position from the GPS signal received with Tokyo as the basic position at the “cold start”. Takes a considerable amount of time to obtain the current position information of the user. Therefore, at the time of cool start of the GPS receiver, there is an inconvenience that a considerable time must be waited until the GPS receiver operates normally in order to use a predetermined navigation service.

  (2) Even when the GPS receiver is turned off and then turned on again, a predetermined time is required until the GPS receiver receives GPS signals from one or more GPS satellites and calculates the current position of the user. Is done. In the case of so-called “warm start”, such a warm start stores information on GPS satellites in the memory means of the GPS receiver, but when the GPS receiver is newly powered, the GPS This means that time synchronization with the satellite must be synchronized. During such a warm start, it usually takes 1 to 2 minutes, and 3 to 4 minutes at the longest after the GPS receiver is turned off and then turned on again until the GPS receiver knows its position. The Even in such a case, since a considerable amount of time is required to obtain the current position information of the user, in order to use a predetermined navigation service, it is necessary to wait until the GPS receiver operates normally. There was inconvenience that it was not.

  (3) In addition to the cold start or warm start described above, it may happen that the GPS signal cannot be received for various reasons. There is a problem that it is difficult to provide a smooth navigation service for an unpredictable reason, such as interruption of signal reception.

  (4) In addition to navigation services used in cars, in the case of GPS receivers used as personal navigation systems, areas where users cannot receive GPS satellite signals (subway stations, underground shopping centers) When the user departs from a predetermined destination, the current position of the user cannot be determined, and thus there is a problem that a predetermined navigation service cannot be provided.

  As a result, even if the GPS receiver itself becomes “cool start” or “warm start”, or even when GPS signal reception is interrupted due to various reasons, there is a method that can smoothly provide a predetermined navigation service. It is requested.

  A navigation service providing method using location information of a mobile communication terminal according to the present invention has been devised to solve the above-described problems of the prior art, and is a cold start of a GPS receiver. Alternatively, even in the case of a warm start, an object is to provide a user with predetermined route information using position information of the user's mobile communication terminal without a predetermined waiting time.

  Another object is to provide the user with predetermined route information using the location information of the user's mobile communication terminal even when the GPS receiver mounted on the car does not operate due to a predetermined problem. .

  Further, in a personal navigation system, even when the user is located in an area where the GPS signal cannot be received, the user tries to provide the user with predetermined route information using the position information of the user's mobile communication terminal. For other purposes.

  In addition, even if the user stops while using the navigation service or stops the operation for a long time and restarts the operation, the navigation service can be used by using the provided route information and map data. Another objective is to minimize communication costs or waiting time.

  Further, the route information recently used by the user is stored, and the route information stored by the user's selection is provided to the user again, so that unnecessary transmission information is generated by receiving the transmission of the route information and map data. Another objective is to minimize communication costs and waiting times.

  In order to achieve the above-described object of the present invention, a navigation service providing method using location information of a mobile communication terminal according to the present invention includes a step of retrieving location information of a user's first terminal, and the retrieved first information. A step of inputting location information of the terminal as departure point information; a step of inputting predetermined destination information; a step of calculating predetermined route information based on the departure point information and the destination information; Providing the calculated route information to the first terminal of the user, determining whether the user's second terminal can receive a GPS signal, and receiving the GPS signal. Correcting the route information based on the user's position information calculated via the GPS signal, and providing the corrected route information to the first terminal. To do.

  The navigation service providing method using the location information of the mobile communication terminal according to another embodiment of the present invention includes a step of searching for the location information of the user's first terminal, and the searched first terminal. The step of inputting position information of the machine as departure point information, the step of inputting predetermined destination information, the step of calculating first route information based on the departure point information and the destination information, Providing the calculated first route information to the first terminal of the user; determining whether the user's second terminal can receive a GPS signal; and receiving the GPS signal Analyzing the GPS signal to calculate the current location of the user; calculating second route information from the calculated current location to the departure location; and the second route information to the first location. Providing to the terminal. And butterflies.

  The navigation service providing method using the location information of the mobile communication terminal according to another embodiment of the present invention includes a step of inputting predetermined departure point information and a step of inputting predetermined destination information. Calculating predetermined route information based on the input departure point information and the input destination information, providing the calculated route information to a user's first terminal, Controlling the current position information of the user to be stored in a predetermined memory means, determining whether the user's second terminal is capable of continuously receiving GPS signals, and not receiving the GPS signals And providing the first terminal with movement direction information on the route information using the stored current position information of the user and the current movement angle information of the user. When That.

  The navigation service providing method using the location information of the mobile communication terminal according to another embodiment of the present invention includes a step of inputting predetermined departure point information and a step of inputting predetermined destination information. Calculating predetermined route information based on the input departure point information and the input destination information, providing the calculated route information to a user's first terminal, Controlling the current location information of the user and the route information to be stored in a predetermined memory means, providing the stored current location information and the route information to the first terminal, and from the user A step of inputting a predetermined confirmation response to the stored current location information and the route information; and providing the current location information and the route information to the first terminal of the user. And butterflies.

  According to another embodiment of the present invention, a navigation service providing method using location information of a mobile communication terminal controls to store predetermined route information in predetermined memory means, and the memory means Controlling the one or more route information stored in the user terminal to be displayed on the first terminal of the user, and one or more of the route information displayed on the first terminal from the user The method includes a step of selectively inputting one, and a step of providing the input route information to the first terminal.

  According to the navigation service providing method using the location information of the mobile communication terminal according to the present invention, the location information of the user's mobile communication terminal is used without a predetermined waiting time even when the GPS receiver is cold start or warm start. Thus, it is possible to obtain an effect that predetermined route information can be provided to the user.

  Also, according to the navigation service providing method using the position information of the mobile communication terminal according to the present invention, even if the GPS receiver of the car does not operate due to a predetermined problem, the position information of the user's mobile communication terminal is used. It is possible to obtain the effect that the route information can be provided to the user.

  Also, according to the navigation service providing method using the location information of the mobile communication terminal according to the present invention, even when the user is located in an area where the user cannot receive GPS signals in the personal navigation system, the mobile communication of the user The user can be provided with predetermined route information using the location information of the terminal.

  Further, according to the navigation service providing method using the location information of the mobile communication terminal according to the present invention, even if the user stops while using the navigation service or stops the operation for a long time and restarts the operation, the already provided service is provided. By enabling the navigation service using the route information and the map data, it is possible to obtain the effect of minimizing unnecessary communication costs or standby time.

  Also, according to the navigation service providing method using the location information of the mobile communication terminal according to the present invention, the route information recently used by the user is stored, and the stored route information is provided to the user again according to the user's selection. As a result, it is possible to obtain an effect of minimizing unnecessary communication cost and waiting time caused by additionally transmitting route information and map data.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A mobile communication terminal widely used in the present specification means a device that is mounted with a predetermined communication module (for example, a CDMA module) so that mobile communication is possible. This is a concept that generally refers to a terminal device such as a PDA (Personal Digital Assistant), a handheld PC, or a mobile phone that has a built-in or is mounted.
<Determining the location of the mobile communication terminal>
FIG. 1 is a configuration block diagram of a system for acquiring position information of a mobile communication terminal used in a navigation service providing method using position information of a mobile communication terminal according to the present invention.

  Referring to FIG. 1, a system for acquiring location information of a mobile communication terminal used in a navigation service providing method using location information of a mobile communication terminal according to the present invention includes a mobile communication terminal (110), a base It comprises a station (120), a home location register (HLR) (130), a location information service (LBS) server (140) located on the mobile carrier side, and a location information server (150).

  As is well known to those skilled in the art, in order to provide mobile communication services such as cellular or PCS, a service area is divided into predetermined cells, and each cell has one or more base stations. ) (120). A mobile communication terminal (110) located in one cell performs predetermined communication with the base station (120) to perform synchronization and paging processes with the base station (120). Carry out. The location information of the mobile communication terminal (110) obtained by paging with the base station (120) is recorded in the home location register (HLR) (130).

  The location information of the mobile communication terminal (110) employed in the navigation service providing method according to the present invention can be obtained by the following method.

  (1) A method for acquiring location information of a mobile communication terminal (110) using a location information service (LBS) server (140). The mobile communication terminal (110) has base station parameters for a specific base station (120) through continuous communication with the base station (120). The mobile communication terminal (110) transmits such base station parameters to the location information server (150) via the mobile communication network, and the location information server (150) receives the base station parameters and performs mobile communication. The base station parameters are transmitted to a location based service (LBS) server (140) located on the provider side. In the LBS server (140), using the transmitted base station parameters, base station (120) position information corresponding to the base station parameters (longitude and latitude information of the base station (120), address information, etc.) The location information server (150) transmits the location information of the provided base station (120) to the mobile communication terminal (110).

  (2) A method for acquiring location information of the mobile communication terminal (110) using a paging channel. As is well known to those skilled in the art, the paging channel is a channel for transmitting messages such as additional information, paging for specific mobile stations, commands or channel assignments to mobile communication terminals in the service area, which are 2600 bps and 9800 bps. Types of transmission rates can be supported, and this transmission rate information is communicated via the synchronization channel. For reference, the paging means determining whether or not a mobile communication terminal can receive an incoming call. The modulation process of the paging channel is similar to that of the synchronization channel, but may be additionally subjected to a data scrambling process using a paging channel long code mask. The mobile communication terminal obtains system synchronization with the base station using the pilot channel, receives the synchronization channel message, synchronizes the timing with the system, and then continuously monitors the paging channel and calls toward itself. Whether or not can be received is determined.

  The mobile communication terminal (110) has base station parameters for a specific base station (120) through continuous communication with the base station (120). The location information server (150) requests the mobile communication terminal (110) to transmit base station parameters using the paging channel, and the mobile communication terminal (110) is located using the paging channel. The base station parameter for the specific base station (120) is transmitted to the location information server (150). The location information server (150) receives the base station parameters and transmits the base station parameters to the location information service (LBS) server (140) located on the mobile communication carrier side. In the LBS server (140), using the transmitted base station parameters, the location information of the base station (120) corresponding to the base station parameters (longitude and latitude information of the base station (120), address information, etc.) To the location information server (150), and the location information server (150) transmits the location information of the provided base station (120) to the mobile communication terminal (110).

  (3) This is a method for acquiring position information of the mobile communication terminal (110) when the GPS communication module is mounted on the mobile communication terminal (110). A GPS signal is received through a GPS receiving module attached to the mobile communication terminal (110). The mobile communication terminal (110) transmits the received GPS signal again to the mobile communication location tracking center (MPC) server (not shown) located in the location information server (150), and the MPC server receives the received GPS signal. The position information of the mobile communication terminal (110) is calculated using the signal, and the calculated position information is transmitted to the mobile communication terminal (110) again.

The location information of the mobile communication terminal (110) employed in the navigation service providing method according to the present invention can be obtained through the method described above. Those skilled in the art to which the present invention pertains can easily understand that the location information of the mobile communication terminal 110 can be obtained by various methods other than the above-described method. I will. The location information of the mobile communication terminal (110) obtained by using the above-described method or other methods is employed in a navigation service providing method described in detail below.
<Example 1>
FIG. 2 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a first embodiment of the present invention.

  Referring to FIG. 2, a navigation service providing method using location information of a mobile communication terminal according to a first embodiment of the present invention includes the following steps.

  The user applies power to the second terminal. According to a preferred embodiment of the present invention, the second terminal is a GPS receiver. When the power is applied for the first time or when the power is applied again after the power is turned off, the above-described cold start or warm start is performed. In such a case, in order to receive a GPS signal, a predetermined standby time (several minutes to 10 minutes or more) is required. In addition, GPS reception may be impossible due to a predetermined cause. Such a case may occur when operating in an urban area where buildings are densely populated (fading phenomenon) or a shadow area where GPS signals do not reach. A similar problem occurs when a user having a personal navigation system (PNS) is in an area where GPS signals cannot be received. Thus, when the current position information cannot be searched using the GPS signal, the steps shown in FIG. 2 are performed.

  The location information of the user's first terminal is searched (step 201). According to a preferred embodiment of the present invention, the first terminal is a mobile communication terminal. As the method for searching for the location information of the first terminal, the above-described three types of location information acquisition methods can be used. The location information of the first terminal obtained through the above-described method is input as the departure point information of the navigation system (step 202). Strictly speaking, the departure point information input in step 202 is not the exact current position of the first terminal, but the position information of the base station in the cell where the first terminal is located. I can say that. In step 202, the departure point information may be changed to the current location information of the first terminal as described above, or the specific area information may be directly input from the user.

  The user inputs destination information to the navigation system (step 203), and the navigation system calculates predetermined route information based on the departure point information and the destination information (step 204). The calculated route information is provided to the user's first terminal (step 205), and the user starts operation according to the route information.

  The user's second terminal determines whether or not the GPS signal can be received (step 206). When a predetermined waiting time has elapsed after a cold start or warm start, or when a predetermined cause that the GPS signal could not be received has been eliminated, the GPS signal may be received via the second terminal. become able to. If it is determined that the second terminal is receiving the GPS signal, the current position information of the user is calculated based on the received GPS signal (step 207). Based on the calculated current position information and the destination information input in step 203, the route information calculated in step 204 is corrected (step 208), and the corrected route information is provided to the first terminal again (step 209). ).

By providing the route information corrected in step 209 to the first terminal again, the departure point information (position information of the base station in the cell in which the first terminal is located) and the actual information entered at the start of the navigation service It becomes possible to correct a route error that may occur due to a difference in departure point information where the user is located. Normally, in the case of Seoul City, one base station is located per 500m radius, so GPS signal cannot be received. Use the location information of the base station in the cell where the mobile communication terminal is located at the beginning of operation. The route information provided in this way can ensure a predetermined accuracy. After the operation is started, after receiving the GPS signal, an accurate current position of the user is found, and then the navigation information can be corrected to provide the user with a quick navigation service.
<Example 2>
FIG. 3a is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a second embodiment of the present invention.

  Referring to FIG. 3a, a navigation service providing method using location information of a mobile communication terminal according to a second embodiment of the present invention includes the following steps.

  A series of procedures for the user to apply power to the second terminal is the same as that of the first embodiment according to the present invention. In the case of warm start or cold start, or if GPS reception is not possible due to a predetermined cause, that is, if the current position information cannot be searched using the GPS signal, the steps shown in FIG. 3a are performed. .

  The location information of the user's first terminal is searched (step 301). According to a preferred embodiment of the present invention, the first terminal is a mobile communication terminal. As the method for searching for the location information of the first terminal, the above-described three types of location information acquisition methods can be used. The location information of the first terminal obtained through the above-described method is input as the departure point information of the navigation system (step 302). Strictly speaking, the departure point information input in step 302 is not the accurate current position of the first terminal, but the position information of the base station in the cell where the first terminal is located. I can say that. Similar to step 202 in FIG. 2 described above, in step 203, the location information specified by the user may be directly input as departure point information.

  The user inputs destination information to the navigation system (step 303), and the navigation system calculates first route information based on the departure point information and the destination information (step 304). The calculated first route information is provided to the user's first terminal (step 305), and the user starts operation according to the route information.

The second terminal of the user to determine whether the received GPS signals (step 306). When a predetermined waiting time has elapsed after a cold start or warm start, or when a predetermined cause that the GPS signal could not be received has been eliminated, the GPS signal may be received via the second terminal. become able to. If it is determined that the second terminal is receiving the GPS signal, the current position information of the user is calculated based on the received GPS signal (step 307). Based on the calculated current position information and the destination information input in step 303, second route information from the current position to the departure point is calculated. The route information calculated in step 308 is information about the route from the current position to the departure point, that is, the base station position. When starting the navigation service, the route information from the base station (departure point) calculated in step 304 to the predetermined destination becomes the first route information, and after receiving the GPS signal, the user's current location and the departure point (base station location) ) Is the second route information.

  It is determined whether the calculated second route information is an advantageous route with respect to the first route information (step 309). To determine whether the route is advantageous, the newly calculated second route information is compared with the first route information, and the new route information from the current position to the destination is advantageous. It is determined whether it is advantageous to move to the departure place (base station) and move to the destination again according to the first route information. Various factors can be used to determine whether the route is advantageous in step 309. The current travel direction of the car is not different from the calculated second route information, or the expected travel distance from the current position to the destination is greater than the expected travel distance during operation according to the second route information and the first route information It is possible to determine whether it is advantageous based on the above. If it is determined in step 309 that the second route information is an advantageous route with respect to the first route information, the second route information is provided to the first terminal (step 310). In step 309, the second route information is provided. Is determined to be a disadvantageous route with respect to the first route information, the third route information from the current position calculated in step 307 to the destination input in step 303 is calculated (step 311). This is provided to the first terminal (step 312).

  FIG. 3b is a diagram showing an example where route information must be recalculated in the navigation service providing method shown in FIG. 3a.

  Referring to FIG. 3b, if the user departs from the origin (A) but cannot receive GPS signals due to various causes, the base station (A ′) location is determined according to the flowchart shown in FIG. As a position, the first route information to a predetermined destination (B) is provided. If the user starts operation and can receive GPS signals at the current location (C), according to the flowchart shown in Figure 3a, from the current location (C) to the departure location (A ') The second route information is calculated. As shown in FIG. 3b, the second route information (C-> A ') is disadvantageous to the first route information (A'-> B), so the destination (B ) Is calculated again and provided to the user. Such third route information may be recalculated by a predetermined movement route search server connected via a predetermined communication network and transmitted to the user's first terminal again, or may be implemented on the user side. For example, the first terminal may re-calculate the route information. When the route information is recalculated by the travel route search server, the distance of the route to be searched is shortened, so that the data size of the route information communicated with the user terminal can be reduced. When the route information is recalculated by the user terminal, it is not necessary to perform communication for transmitting the route information, so that a quick route re-search is performed.

When starting the navigation service through such a method, the input departure point information (location information of the base station in the cell where the first terminal is located) and the departure point information where the actual user is located are different. This makes it possible to correct a path error that may occur.
<Example 3>
FIG. 4 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a third embodiment of the present invention.

  In the navigation service providing method shown in FIG. 4, the GPS signal is received at the second terminal of the user, and the second terminal is turned off due to a predetermined cause during normal operation of the navigation service. This is to provide a navigation service when a signal cannot be normally received.

  Referring to FIG. 4, a navigation service providing method using location information of a mobile communication terminal according to a third embodiment of the present invention includes the following steps.

  First, departure point information and destination information are input to the navigation system (step 401). The departure point information may be input through user position information calculated through GPS signal reception, or may be input as departure point information by calculating position information of the mobile communication terminal according to the method described above. Predetermined route information is calculated based on the departure point and destination information input in step 401 (step 402), and the calculated route information is provided to the user's first terminal (step 403). The user's current position calculated through the received GPS signal is stored in a predetermined memory means according to a predetermined period (step 404). The predetermined cycle is the same as the GPS signal reception cycle. The memory means is a memory means built in the first terminal, or a mobile device such as a Compact Flash (registered trademark) (CF) card, an SD card, a memory stick, etc. designed to be detachable from the first terminal. Or memory means. According to another embodiment of the present invention, the memory means for storing the current location of the user is located in a central system that provides a navigation service, and the current location is stored via the mobile communication network whenever necessary. It may be embodied to be transmitted to the first terminal.

  The second terminal determines whether or not the GPS signal can be continuously received (step 405) .If it is determined that the GPS signal is received, the process returns to step 404 via the received GPS signal. The calculated current position of the user is stored. If it is determined in step 405 that the GPS signal is not received for a predetermined cause, the current position information stored in step 404 and the current movement angle information of the user are calculated from the predetermined sensor means. The moving direction information of the car can be continuously displayed on the first terminal using the moving direction information on the route information (step 406). In step 406, the sensor means may be a geomagnetic sensor included in the first terminal or a DR (Dead Reckoning) means included in the second terminal. Such a geomagnetic sensor operates to detect the earth's geomagnetism and can detect the current direction of movement of the user. Recently, the geomagnetic sensor is built in a mobile communication terminal such as a mobile phone (also known as “Compass chip”). The DR (Dead Reckoning) means is a device that performs navigation using a gyroscope (or geomagnetic sensor) and a speed sensor (or acceleration sensor), and calculates the current position or moving direction from the initial position of the user. be able to.

According to the above-described third embodiment of the present invention, even when GPS signal reception is not smooth during the movement of the user's car, the moving direction information of the car can be continuously displayed on the first terminal of the user. Smooth use of navigation services is possible.
<Example 4>
FIG. 5 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a fourth embodiment of the present invention.

  The navigation service providing method shown in FIG. 5 is for providing a quick navigation service when a user stops driving or parks for a long period of time for a variety of reasons during operation and then restarts the operation of the car. .

  Referring to FIG. 5, a navigation service providing method using location information of a mobile communication terminal according to a fourth embodiment of the present invention includes the following steps.

  First, departure point information and destination information are input to the navigation system (step 501). The departure point information may be input through user position information calculated through GPS signal reception, or may be input as departure point information by calculating position information of the mobile communication terminal according to the method described above. Predetermined route information is calculated based on the departure point and destination information input in step 501 (step 502), and the calculated route information is provided to the user's first terminal (step 503). The current position of the user calculated via the received GPS signal and the route information calculated in step 502 are stored in predetermined memory means (step 504). As described above with reference to FIG. 4, the memory means is a memory means built in the first terminal, or a compact flash (registered trademark) card, SD card designed to be detachable from the first terminal. Or a mobile memory means such as a memory stick. According to another embodiment of the present invention, the memory means for storing the current position of the user is located in a central system that provides a navigation service, and the current position and the The route information may be transmitted to the first terminal.

  Stored in step 504, when the user stops during the operation or parks for a long time, disconnects the first terminal from the predetermined navigation set and then reconnects the first terminal to resume the operation of the car The current position information and the route information list are displayed on the user's first terminal (step 505). If it is determined that the position information and route information that the user has operated before stopping or parking for a long period of time match, the user inputs a predetermined confirmation response (step 506) and is stored in response to the user confirmation response. The current location information and route information are provided to the first terminal (step 507).

According to the above-described fourth embodiment of the present invention, when the user stops traveling due to various causes and stops or parks for a long time and then resumes operation, the GPS receiver power supply or the user's current position information is Since a series of processes for re-acquiring and calculating predetermined route information can be omitted, not only a quick navigation service is provided, but also unnecessary communication costs required by newly transmitting route information, etc. Etc. can be saved.
<Example 5>
FIG. 6a is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a fifth embodiment of the present invention.

  In the navigation service providing method shown in FIG. 6a, when the user intends to receive the navigation service, the route information already used by the user is stored in a predetermined memory means, and the route information stored by the user is stored. If one of these is selected, this is provided to the user's first terminal.

  Referring to FIG. 6a, a navigation service providing method using location information of a mobile communication terminal according to a fifth embodiment of the present invention includes the following steps.

  One or more path information already used by the user is stored in a predetermined memory means (step 601). As described above, the memory means is a memory means built in the first terminal or a Compact Flash (registered trademark) card, an SD card, a memory stick, etc. designed to be detachable from the first terminal. Or mobile memory means. According to another embodiment of the present invention, the memory means for storing the current location of the user is located in a central system that provides a navigation service, and the route information is transmitted via the mobile communication network whenever necessary. It may be embodied to be transmitted to the first terminal.

  If the user intends to use the navigation service, a list for the route information stored in the memory unit is displayed on the display unit of the user's first terminal (step 602). The user confirms whether or not there is route information that the user is currently going to move from the list, and selects and inputs predetermined route information (step 603). Corresponding to the user's selection input, predetermined route information stored in the memory means is provided to the first terminal (step 604), and the user can operate according to the route information.

  FIG. 6b is a diagram showing an example of a screen displayed on the user's mobile communication terminal in the navigation service providing method shown in FIG. 6a. Simultaneously with the start of the navigation service, when an item “Recent route guidance” is selected on a predetermined user interface screen (a), a list of route information recently used by the user is displayed (b). The user selects an item for the route that he / she currently wants to use from the displayed predetermined list, and predetermined route information corresponding to the selected item is provided to the first terminal.

  According to the fifth embodiment of the navigation service according to the present invention shown in FIGS. 6a and 6b, the user obtains the user's current position information again for the route information he / she used and recalculates the predetermined route information. Since a series of processes can be omitted, not only quick navigation service provision but also unnecessary communication costs required by newly transmitting route information and the like can be reduced.

  The present invention also provides a computer-readable recording medium recording a program for executing a navigation service providing method using location information of a mobile communication terminal according to each embodiment described above.

  The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. In the medium, program instructions may be specially designed and configured for the present invention, or may be known and usable by those skilled in the art of computer software. Examples of computer readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and floptical disks. Hardware devices specially configured to store and execute program instructions such as magneto-optical media, and ROM (ROM), RAM (RAM), flash memory, etc. included. The medium may be a transmission medium such as an optical or metal line or a waveguide including a carrier wave for transmitting a signal designating a program command, a data structure, or the like. Examples of the program instruction include not only machine language code generated by a compiler but also high-level language code that can be executed by a computer using an interpreter or the like.

  As described above, the present invention has been described with reference to the limited embodiments and drawings. However, the present invention is not limited to the above-described embodiments, and those having ordinary knowledge in the field to which the present invention belongs. Therefore, various modifications and variations are possible from such description. Accordingly, the spirit of the invention should be construed solely by the appended claims, and all equivalent or equivalent variations will fall within the scope of the spirit of the invention.

1 is a configuration block diagram of a system for acquiring position information of a mobile communication terminal used in a navigation service providing method using position information of a mobile communication terminal according to the present invention. 3 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a first embodiment of the present invention. 5 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a second embodiment of the present invention. FIG. 3B is a diagram showing an example in which route information must be recalculated in the navigation service providing method shown in FIG. 3A. 7 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a third embodiment of the present invention. 7 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a fourth embodiment of the present invention. 7 is a flowchart illustrating a navigation service providing method using location information of a mobile communication terminal according to a fifth embodiment of the present invention. FIG. 6B is a diagram showing an example of a screen displayed on the user's mobile communication terminal in the navigation service providing method shown in FIG. 6a.

Claims (10)

In a program for causing a computer to execute a process of providing a navigation service to a first terminal that is communicably connected,
Searching for location information of the user's first terminal;
Inputting the searched location information of the first terminal as departure point information;
A stage where predetermined destination information is input;
Calculating first route information based on the departure point information and the destination information;
Providing the calculated first route information to the first terminal of the user;
And determining whether the second terminal of the user can receive GPS signals,
If a GPS signal can be received, analyzing the GPS signal to calculate the current location of the user;
Calculating second route information from the calculated current position to the departure point;
Providing the second route information to the first terminal;
A program that causes a computer to execute processing for providing a navigation service. Controlling the route information to be stored in a predetermined memory means;
Controlling the one or more route information stored in the memory means to be displayed on a user's first terminal;
Selectively receiving one input from one or more of the route information displayed on the first terminal from the user;
Providing the input route information to the first terminal;
The program according to claim 1, further comprising: The step of searching for location information of the first terminal of the user comprises
A predetermined base station parameter maintained in the first terminal is transmitted;
Transmitting the transmitted base station parameters to a location based service (LBS) server;
Receiving location information of a base station corresponding to the base station parameter from the LBS server;
Providing the received location information of the base station to the first terminal;
2. The program according to claim 1, further comprising: The step of searching for location information of the first terminal of the user comprises
Requesting the first terminal to transmit a predetermined base station parameter maintained in the first terminal through a predetermined paging channel;
Transmitting the base station parameters from the first terminal via the paging channel;
Transmitting the transmitted base station parameters to a location based service (LBS) server;
Receiving location information of a base station corresponding to the base station parameter from the LBS server;
Providing the received location information of the base station to the first terminal;
2. The program according to claim 1, further comprising: The program according to claim 1, wherein the first terminal is a mobile communication terminal, and the second terminal is a GPS receiver. 2. The program according to claim 1, wherein the first terminal is a mobile communication terminal, and the second terminal is a GPS receiving module built in the first terminal. The program of claim 2, wherein the first terminal is a mobile communication terminal. 3. The program according to claim 2, wherein the memory means is a built-in memory means built in the first terminal or a mobile memory means detachable from the first terminal. The program according to claim 2, wherein the memory means is located in the computer and communicates with the first terminal via a mobile communication network. It claims 1 to A computer readable recording medium of any one of program 2.

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