KR20030044470A - Method for Notifying Destination-related Information by using Mobile Station with GPS - Google Patents

Abstract

The present invention relates to a method for notifying information related to a destination using a mobile communication terminal equipped with a GPS reception function. When the user sets location information of a destination, a GPS receiver provided in the terminal and an external GPS positioning system, if necessary, are currently used. After extracting the terminal location, information related to the destination, that is, the location of the destination, the distance to the destination, the moving speed and / or the estimated arrival time, etc. are calculated and notified to the terminal.

The present invention notifies the mobile communication terminal of the exact remaining distance to the destination, the current moving speed, the expected arrival time, and the like, and thus can be usefully used for identifying the moving situation and finding the route in an unfamiliar place.

Description

{Method for Notifying Destination-related Information by using Mobile Station with GPS}

The present invention provides a method for notifying information related to a destination using a mobile communication terminal equipped with a GPS reception function, and more specifically, when a user sets location information of a destination, a GPS receiver provided in the terminal and an external GPS positioning system if necessary. The present invention relates to a method of notifying a terminal after extracting a current terminal location, calculating information related to a destination, that is, a location of a destination, a distance to the destination, a moving speed, and / or an estimated arrival time.

Recently, with the widespread use of mobile communication services, almost all citizens are provided with one or more mobile communication services. These mobile communication services are being expanded to include basic voice calls, text and voice message transmissions, wireless Internet services, and location tracking functions.

Among these, the location tracking function using a mobile communication terminal may be implemented by a method using a cell location registered in a home location register (HLR) and a method using location information by a global positioning system (GPS). .

The method using the cell location information with the terminal has a radius of the cell, that is, the error of about several km, so it is difficult to accurately track the position. However, if the GPS or DGPS (Differential GPS) system is used, the error of several m to tens of meters Branches can provide relatively accurate location information.

Recently, the GPS positioning function "gpsOne" has been added to Qualcomm's CDMA modem chip, the MSM 3300. Using GPS signals from satellites, fast and accurate positioning can be achieved.

However, until now, the GPS function granted to the terminal can only confirm the current location information and time of the terminal, and there are no proposals for various services using the same.

Accordingly, the present invention has been made in view of the above, by using a mobile communication terminal having a GPS receiver and, if necessary, using the external GPS positioning system to determine the exact current location of the user, the distance information to the destination set by the user In order to provide a method of calculating and informing a moving speed information and / or an estimated time of arrival, etc.

An object of the present invention is to provide a method for notifying destination related information using a mobile communication terminal having a GPS receiver.

Another object of the present invention is to periodically calculate the distance, arrival time, moving speed, etc. from its current location to a destination set by the user using a mobile communication terminal having a GPS receiver and / or an external GPS positioning system. It provides a way to notify.

1 is a functional block diagram of a mobile communication terminal for providing a destination related information notification service according to the present invention.

2 is a block diagram of an entire system for implementing a method for notifying destination related information according to a second embodiment of the present invention.

3 is a flowchart illustrating a destination-related information notification method according to a second embodiment of the present invention.

4 to 7 illustrate examples of a terminal screen in a process of performing a method for notifying destination related information according to the present invention.

The mobile communication terminal according to the first embodiment for achieving the object of the present invention as described above, GPS receiver, wireless transmitter and receiver for receiving GPS signals from the input unit, output unit, storage unit, fixed station or satellite The control unit comprises 1) a function of calculating the current position of the terminal from the GPS signal received by the GPS receiver every predetermined time, 2) a function of storing the calculated position information in a storage unit, and 3) a user setting 4) The terminal output unit calculates the location information of a destination by receiving it from an external positioning system, and calculates the distance between the destination and the current location, the current moving speed, and the expected arrival time according to the options set by the user. It has a function to display.

The mobile communication terminal according to the second embodiment 1) receives location information of a destination set by a user to an external GPS location system, or uses location information selected from a list of location information stored in a storage unit to determine location information of a destination. And 2) a function of transmitting a GPS signal to an external GPS positioning system according to a user-specified option, or transmitting a received GPS signal to a GPS positioning system upon request from the GPS positioning system. And 3) outputting destination-related information which the GPS positioning system calculates and notifies.

Here, the destination-related information is one or more of "distance between the current location and the destination", "the current moving speed", "expected arrival time to the destination", and the options set by the user are the notification method of the destination-related information, the notification period ( Notification time or notification distance period).

The destination related information notification method according to the first embodiment of the present invention is a method using a mobile communication terminal that can receive a GPS signal and calculate the location of the terminal based on the GPS signal.

A destination specifying step of selecting a destination from a list of visited locations stored in a storage unit of the terminal or receiving and storing location information of a desired destination from an external geographic information system;

An option setting step of receiving and setting at least one environment setting information among a notification alarm method and a notification period of destination related information from a user;

Calculate the current location of the terminal from the received GPS signal at each optional notification period, calculate destination-related information consisting of one or more of the distance to the destination, the current moving speed, and the estimated time of arrival; An information calculation and output step of outputting information;

And a repeating notification step of repeating the information calculation and output steps until the current location of the terminal coincides with the destination location.

The destination related information notification method according to the second embodiment of the present invention uses a mobile communication terminal capable of transmitting and receiving a GPS signal, an external GPS positioning system, a message transmission system, and a mobile communication network connecting the terminal and the system.

A destination location specifying step of extracting destination location information selected by the user from the terminal storage unit or requesting an external GPS location system to receive destination location information;

An option setting step of receiving and setting at least one environment setting information among a notification alarm method and a notification period of destination related information from a user;

The terminal transmits a GPS signal received to the GPS positioning system every optional notification period;

The GPS positioning system calculates the current position of the terminal by using the received GPS signal, calculates one or more destination related information among the distance to the destination, the current moving speed, the expected time of arrival to the destination, and the message transmission system. An information calculation and transmission step of transmitting the calculated information to the terminal;

The terminal outputs an alarm and outputs the received destination-related information. Of course, the GPS signal transmission step or output step must be repeated until the current location and the destination location of the terminal are the same.

The notification period in the above-described first and second embodiments may be one of a notification time period for making a notification every predetermined time or a notification distance period for making a notification for every predetermined (moving) distance.

In addition, the distance information between the destination and the current terminal may be a linear distance using location information of the longitude or latitude, or may be a movable actual distance calculated from a geoinformation system that is linked to each other.

In addition, the estimated time of arrival to the destination is generally calculated based on the calculated moving speed of the terminal, but information of the traffic information system (ITS) which is separately linked can be additionally used.

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

1 is a functional block diagram of a mobile communication terminal for providing a destination related information notification service according to the present invention.

The mobile communication terminal 100 according to the present invention includes an input unit 110, an output unit 120, a storage unit 130, a wireless transmission / reception unit 140, and a controller 150 like a general mobile communication terminal. It further comprises a GPS receiver 160 for receiving a GPS signal. As described above, the GPS receiver may be implemented using, for example, a wireless communication chip having a GPS function, and a detailed description thereof will be omitted.

The controller 150 may be implemented in the following two forms according to the embodiment of the service.

First, according to the first embodiment, 1) a function of calculating the current position of the terminal from the GPS signal received by the GPS receiver every predetermined time, and storing the calculated position information in the storage unit; , 3) The distance between the destination and the current location, the current moving speed, the expected arrival time, etc. shall be calculated and displayed on the terminal output according to the option set by the user.

2) The destination location specifying function is to specify accurate location information such as the longitude and the like of the destination, and selects one of the location information lists already stored in the terminal, and transfers the information on the desired destination to an external location system. A method of transmitting and specifying the location information transmitted by the positioning system may be used.

The control unit 150 of the mobile communication terminal according to the second embodiment of the present invention does not have a function of calculating a position from a GPS signal, but the above-described functions (destination location information specifying function, GPS signal transmitting function, and output function). Equipped.

Meanwhile, in addition to the above-described functions, the controller of the first and second embodiments may further include a function of receiving and setting various option information for destination-related information notification.

These various functions may be implemented in software, and specific implementation manners of the functions will be described in more detail below.

2 is a block diagram of an entire system for implementing a method for notifying destination related information according to a second embodiment of the present invention.

The entire system includes a mobile communication terminal 100 having the above functions, a mobile communication network 210 including a GPS positioning system 200, a mobile communication exchange (MSC) 212, and a short message transmission system (SMSC); 220, and if necessary, a geographic information system (GIS) 230 or a traffic information system (ITS) 240 having a detailed geographic information DB may be linked.

The mobile communication terminal 100 may have any form as long as it has a GPS receiver and a controller of the above-described functions. That is, it is a broad concept that includes all terminals such as GSM or CDMA cellular phones, PCS, IMT-2000, PDA, handheld PC.

The GPS positioning system 200 includes 1) a function of calculating accurate position information of a destination when receiving information on a destination from a terminal, and 2) receiving and demodulating a GPS signal transmitted from the terminal to determine a current position of the corresponding terminal. 3) calculates the distance between the two locations, the current moving speed, and / or the expected arrival time to the destination based on the calculated terminal current location and the location information of the destination.

Hereinafter, the function implementation of the positioning system 200 will be described in detail.

First of all, the implementation of the function 1) may be performed by referring to a location information database provided by itself or a database of an external geographic information system. For example, when the information about the destination transmitted from the terminal is "Yeoksam Station", the search may be performed by extracting the longitude and latitude (E126.34.45, N37.31.21) which are accurate location information matched with Yeoksam Station.

Of course, in the case of selecting one of the destinations having accurate location information in advance in the terminal storage unit because the user has already visited, the GPS positioning system simply receives and stores the corresponding destination location information, and thereafter (remaining) distance and speed. And / or when calculating the estimated time and the like.

The function of 2) above may be implemented as follows.

The GPS signal received by the terminal includes signals from GPS satellites such as satellite identification code and signal transmission time, and the GPS positioning system obtains pseudo-range from the satellite to the terminal from the satellite signal. Errors, satellite orbit errors, multipath errors, etc.) to obtain accurate satellite-to-terminal distances. Knowing the pseudoranges of three or more satellites, the location of a point on the earth's surface can be determined by trigonometry. In the case of a single satellite navigation system using only pseudo distances, a large error of about 100 m is generated, but when the phase of a carrier wave can be accurately understood, accuracy of several centimeters can be secured.

Since the method of calculating the position of the antibody using the GPS signal corresponds to a general GPS technology, a detailed description thereof will be omitted.

The functions of 3) above are divided into ① distance, ② current speed, and ③ estimated time of arrival.

First, the distance between the destination and the terminal can be obtained as follows using the latitude and longitude information. For example, a distance of 1 ° longitude is 96.5km at 30 ° latitude, 85.4km at 40 ° latitude, and a distance between 1 ° latitude is about 110km, so if the terminal current location (A) and destination (B) If each position (longitude and latitude) is (N30 degrees 00 minutes 00 seconds, E125 hours 00 minutes 00 seconds) and (N30 degrees 10 minutes 00 seconds, E125 hours 10 minutes 00 seconds), the linear distance between them is Can be calculated by the same equation

This distance is, of course, the straight line distance between the two positions. Therefore, since this may be different from the actual distance along the movable route, the GPS positioning system checks the movable route between the two positions by referring to a database provided by itself or a separate external geographic information DB, and the movable route. It is also possible to set one or more nodes at, and to calculate the actual moving distance by summing the distances between the nodes. In the example above, assuming that the terminal location (A) and the destination (B) are in the diagonal direction of one block, set one vertex of the block (longitude E125: 10: 00 seconds, latitude N30 degrees 00 minutes 00 seconds) to node C. Then, the actual moving distance can be obtained as follows.

However, the present invention is not necessarily limited to this method. For example, if a database is provided that stores the actual distance between each location, it is simply required to refer to the DB. Such a database may be implemented, for example, by tabulating commonly seen distance table between train stations.

The movement speed of ② can be easily obtained by using the distance and time interval between the two since the terminal position is continuously monitored every predetermined period.

The estimated time of arrival to the destination may be calculated using, for example, the movement speed calculated above.

That is, for example, if the distance between the terminal current location and the destination is 2km and the user (terminal) is moving at a speed of about 1.5m / s toward the destination, it is assumed that the movement at that speed thereafter, The estimated time is calculated to be about 22 minutes.

Of course, if the destination is very far away, the current travel speed will not mean much, so the estimated time of arrival is calculated using the average travel time. For example, if the terminal location is in Daejeon and the destination is Seoul, it could be calculated by adding some extra time to the Seoul-Daejeon average travel time (2.5 hours on the highway, 2 hours on the train).

However, the calculation of the estimated time of arrival is not limited to this method, and other algorithms may be used, for example, by using the average speed according to the congestion of the road with reference to the Traffic Information System (ITS), etc. You can also calculate the estimated time.

In addition, it is possible to calculate the estimated arrival time more accurately by analyzing the moving speed and pattern to predict the moving means according to the speed and pattern. For example, if the maximum speed is less than 2m / s and is constant, it is likely to be "walking"; if the maximum speed is fast and very irregular, it is likely to be a bus or "vehicle movement"; If the speed change has a certain pattern, it is likely to be a "subway" or "train" movement.

The mobile communication network 210 includes a base station (BS) 211, a mobile communication exchange (MSC) 212, a home location register (HLR) and the like to provide a wireless communication service. Means a communication channel responsible for transmitting and receiving data modulated by the.

In addition, the SMS (Short Message Service Center; SMSC) 220 may be a text message (short) form defined between a mobile station (MS) and a mobile terminal, or between a mobile terminal and a short message entity (SME). It is a communication service center that delivers real-time transmission and forwarding function that stores and delivers the message until the receiver can receive it. The SMSC is a node having a unique signaling point code (SPC) in a signaling system 7 (SS7) network, which is connected to a home location register (HLR) and a mobile service center (MSC) to determine the location of a receiver, and a PLMN ( Public Land Mobile Network) has a function of delivering a short message to mobile subscribers. SMSC is a system that can be transmitted in both directions by numbers, letters, etc. between other subscribers through various text delivery systems such as PC communication system, Internet server system, and mobile phone using mobile communication network. Omit.

3 is a flowchart illustrating a destination-related information notification method according to a second embodiment of the present invention.

First, the user specifies the destination location information (S311). That is, first, if there is a desired destination from the previously stored location information list, and if one is selected, the terminal transmits the destination location information to the GPS positioning system. If there is no desired destination location information in the list, the name of the destination is input separately, and the terminal transmits the information about the destination to the GPS positioning system. The GPS positioning system extracts accurate destination location information corresponding to the corresponding destination by referring to the geographic information database.

Next, the user sets a notification option of destination related information (environmental setting, S312). That is, an alarm method and the like are set when a message including a notification period and destination related information is received. The notification period may use a notification time period setting for notifying at a predetermined time, a notification distance period setting for notifying at every constant distance movement, and the like. In addition, only specific information may be selected from the destination related information. For example, one may choose to notify only the distance to the destination or only the expected time of arrival. The option information thus set is transmitted back to the GPS positioning system and stored.

When the GPS positioning system corresponds to a condition (time) to be notified, the GPS location system requests to transmit a GPS signal to the terminal (S314), and calculates the current position of the terminal using the GPS signal received from the terminal. When the current position of the terminal is calculated, the distance between the two is calculated using the previously obtained destination position information and the terminal position information, and the moving speed is calculated by comparing the information with the previous notification period. The estimated arrival time is calculated using the moving speed and the distance (S315, S316). The terminal position calculation, the movement speed calculation, and the expected arrival time calculation from the GPS signal use the method described with reference to FIG. 2.

Of course, the option information is not stored in the GPS positioning system but only in the terminal storage unit. If the notification time arrives, the terminal controller directly transmits the GPS signal to the GPS positioning system without request of the GPS positioning system. To be able to produce

When necessary destination-related information is calculated, a text message including the information is generated, and the text message is transmitted to the mobile communication terminal via the text message transmission system and the mobile communication network (S317).

When the terminal receives the destination related information message, the terminal notifies with the alarm method designated as an option, and outputs the message on the screen (S319).

This series of processes is repeated every notification period until the destination is reached, that is, until the terminal location becomes the same as the destination location (S320 and S321).

Although FIG. 3 has described the second embodiment using only a mobile communication terminal in charge of receiving GPS signals and an external GPS positioning system, the first embodiment may be implemented in a similar manner. That is, destination location information specification, option setting, terminal current location calculation and destination related information calculation are all performed by the control unit of the terminal.If necessary, only the destination location can be checked by using an external geographic information system or traffic for more accurate information calculation. Reference may be made to information systems. The flowchart of the method according to the first embodiment is omitted to avoid duplication.

4 to 7 illustrate examples of a terminal screen in a process of performing a method for notifying destination related information according to the present invention.

4A is a menu initial screen of the GPS additional service, and selects “3. Destination-related information providing service” from among various possible services (weather information providing service, location notification service, and destination related information providing service). 4B is an initial screen of a "destination related information providing service" item, and a "1. destination input" menu for specifying destination location information and a "2. environment setting" item for setting user options are provided. "Destination input" item again contains sub-items of "1. Search" and "2. Enter", and "environmental setting" item is "1. notification period setting", "alarm method setting", "needed" Information item ".

FIG. 5 is an example of a screen for selecting or inputting information on a destination. In FIG. 5A, a screen for searching and selecting one of the location information lists stored in the storage unit since the user has already visited, FIG. 5B shows a destination name separately. An example of input is shown.

FIG. 6 is a screen example for setting user options. In FIG. 6A, the notification period is set to "every 10 minutes", and in FIG. 5B, necessary information is selected. That is, a plurality of pieces of information desired to be notified can be selected from the remaining distance to the destination, the moving speed, and the estimated time of arrival.

7 is an example of an output screen of a destination related information message notified by the present invention. The message includes not only the current location but also the remaining distance to the destination, the current speed of travel, and the estimated time of arrival.

By using the method and the terminal of the present invention as described above, the mobile communication terminal is notified of the remaining distance to the destination, the current moving speed, the expected arrival time, and the like. It may be useful.

Claims (6)

A method using a mobile communication terminal capable of receiving a GPS signal and calculating the position of the terminal based on the GPS signal, A destination specifying step of selecting a destination from a visited location list stored in a storage unit of the terminal or receiving and storing location information of a desired destination from an external geographic information system; An option setting step of receiving and setting at least one environment setting information among a notification alarm method and a notification period of destination related information from a user; Calculate the current location of the terminal from the received GPS signal at each optional notification period, calculate destination-related information consisting of one or more of the distance to the destination, the current moving speed, and the estimated time of arrival; An information calculation and output step of outputting information; And a repeating notification step of repeating the information calculating and outputting steps until the current location of the terminal coincides with the destination location. The method of claim 1, And the notification period is one or more of a notification time period for notifying every predetermined time and a notification distance period for notifying every predetermined (moving) distance. The method according to claim 1 or 2, The distance between the destination and the current terminal is one of a linear distance using the latitude and longitude positioning information and a movable real distance calculated from a geoinformation system that is separately linked. Estimated arrival time to the destination is a destination-related information notification method using a GPS mobile communication terminal, characterized in that calculated using at least one of the information of the current movement speed of the terminal and the associated information system (ITS) linked . A method using a mobile communication terminal capable of transmitting and receiving GPS signals, an external GPS positioning system, a message transmission system, and a mobile communication network connecting the terminal and the system, A destination location specifying step of extracting destination location information selected by the user from the terminal storage unit or requesting an external GPS location system to receive destination location information; An option setting step of receiving and setting at least one environment setting information among a notification alarm method and a notification period of destination related information from a user; The terminal transmits a GPS signal received to the GPS positioning system every optional notification period; The GPS positioning system calculates the current position of the terminal by using the received GPS signal, calculates one or more destination related information among the distance to the destination, the current moving speed, the expected time of arrival to the destination, and the message transmission system. An information calculation and transmission step of transmitting the calculated information to the terminal; And, The terminal comprises an output step of alarming and outputting the received destination-related information, And repeating the GPS signal transmitting step and outputting step until the current location and the destination location of the terminal are the same. The method of claim 4, wherein And the notification period is one or more of a notification time period for notifying every predetermined time and a notification distance period for notifying every predetermined (moving) distance. The method according to claim 4 or 5, The distance between the destination and the current terminal is one of a linear distance using the latitude and longitude positioning information and a movable real distance calculated from a geoinformation system that is separately linked. Estimated arrival time to the destination is a destination-related information notification method using a GPS mobile communication terminal, characterized in that calculated using at least one of the information of the current movement speed of the terminal and the associated information system (ITS) linked .