KR20110040434A - Method for complementing position measurement using digital multimedia broadcasting and internet and near filed communication and personal terminal appling to the same - Google Patents

Abstract

PURPOSE: A GPS-based position measurement compensating method using a DMB(Digital Multimedia Broadcasting), local area communication, and a USB, and a personal terminal using the method are provided to enable quick and accurate position measurement by receiving the latest satellite trajectory data. CONSTITUTION: When an update event about satellite trajectory data is generated, a personal terminal(100) determines the effectiveness of satellite trajectory data saved in a storage unit. If the satellite trajectory data is not effective, a DMB receiving module is activated to receive satellite trajectory data transmitted from a DMB server(300). If the reception of data fails, a local area communication module is activated or a USB memory(500) is connected. The received satellite trajectory data is updated in the personal terminal.

Description

Method for Compensation of GPS-Based Position Measurement Using DMS and Near Field Communication and 및 ス 및 and Personal Terminal Applying Them

The present invention relates to a position measuring method based on a GPS (Global Position System), and in particular, by receiving the latest information on satellite orbit information through digital multimedia broadcasting (DMB) and the Internet and near field communication. The present invention relates to a GPS-based position measurement complementary method for enabling accurate and accurate position measurement and a personal terminal using the same.

In general, A-GPS (Assisted GPS), which is one of GPS-based location measurement methods, uses a GPS receiver equipped with a location information received from a satellite and a location information received from a base station of a mobile communication system. It is a technique to measure.

By using the A-GPS method, it is possible to shorten the positioning time and to identify a more accurate position as compared to the case of using only the GPS receiver alone.

Among the systems for measuring position in this manner, a navigation terminal for guiding a driving route of a vehicle is mainly used.

Navigation terminals are generally equipped with a GPS receiver. Therefore, when the main power is applied to use the navigation service, the navigation terminal receives satellite trajectory information and pseudo range (PR) information from the satellite using a GPS receiver to determine the current position of the vehicle. Here, the pseudo distance (hereinafter, PR) means a distance between the terminal and the satellite measured from the difference between the time when the signal is transmitted from the satellite and the time when the signal is received by the terminal.

However, when a disturbance such as a satellite is blocked by a building or the like, it takes several minutes to determine the current position of the vehicle, causing inconvenience to the user.

That is, the satellite orbit information is updated at regular intervals. In particular, if the satellite orbit information needs to be updated after driving the navigation terminal at the time of departure of the vehicle, the satellite orbit information is obtained from the satellite. As a result, when a failure occurs, it takes a long time to increase customer complaints.

Therefore, when the navigation terminal measures the position using the A-GPS method, even if only satellite orbit information is updated in advance, the time for initial position determination can be shortened.

However, in order to use the current A-GPS method, hardware such as a modem for communicating with a base station of a mobile communication system must be additionally installed in the navigation terminal, and a communication fee is generated because the mobile communication system needs to be connected every time the position measurement is performed. There are disadvantages.

In recent years, the penetration rate of portable terminals such as cellular phones, personal communication services (PCS), personal digital assistants (PDAs), portable multimedia players (PMPs), etc. is increasing day by day, and location-based services using such portable terminals are also actively provided. It is becoming.

However, the portable terminal also needs to be connected to the base station of the mobile communication system in order to measure the location using the A-GPS method. Accordingly, there is a disadvantage in that a communication fee is generated, thereby increasing the burden on the customer and decreasing the utilization rate of the location-based service.

The present invention has been derived to solve this problem, GPS-based location that can measure the position by A-GPS method can be updated by receiving orbit satellite information via DMB, short-range communication or USB in case of communication failure It is an object of the present invention to provide a measurement supplement method and a personal terminal using the same.

The GPS-based position tracking supplement method of the present invention for achieving the above technical problem, in the method for measuring the current position by receiving satellite orbit information and pseudo range (PR) information from the satellite using a GPS receiving module (A) determining the validity of the satellite orbit information when an update event for the satellite orbit information occurs; (b) activating a DMB receiving module if the satellite orbit information is invalid; (c) receiving satellite orbit information transmitted from a DMB broadcasting station server through the DMB receiving module; (d) activating a local area communication module or connecting a USB memory when an error occurs in the reception; And (e) updating satellite orbit information received through the short range communication module or read from the USB memory.

According to one embodiment of the present invention, when the near field communication module is activated in step (d), the satellite orbit information transmitted from the hub center in the near field communication region is received.

According to another embodiment of the present invention, when the short-range communication module is activated in step (d), it is possible to receive satellite orbit information from the other terminal by performing communication between other terminals in the area capable of short-range communication. It is done.

According to one embodiment of the present invention, before the connection of the USB memory in the step (d), further comprising the step of uploading the latest information on the satellite orbit information to the USB memory.

According to an embodiment of the present invention, the USB memory is characterized in that the identification number key for each user is stored, and when connected to the Internet-enabled device can automatically update the latest information on the satellite orbit information without a login process.

According to one embodiment of the present invention, the short-range communication module is characterized in that any one of a Bluetooth module, a Zigbee module, a wireless connection recognition technology (RFID) module, a Wi-Fi (WiFi) module.

On the other hand, the personal terminal using the GPS-based position tracking complementary method of the present invention for achieving the above technical problem, the satellite orbit information and pseudo range (PR) information from the satellite through the internal GPS receiving module A terminal for receiving and measuring a current position, comprising: a DMB receiving module for receiving satellite orbit information transmitted from a DMB broadcasting station server; A near field communication module configured to receive satellite orbit information from a hub center accessible through near field communication; A USB interface for interfacing with a USB memory; A storage unit storing the satellite orbit information; And when the update event for the satellite orbit information is generated, activate the DMB receiving module, and then update the satellite orbit information received through the DMB receiving module to the storage unit, and receive the received information through the DMB receiving module. When an error occurs, the near field communication module is activated and the satellite orbit information received through the near field communication module is updated in the storage unit, or the satellite orbit information is read from a USB memory connected to the USB interface to update the storage unit. It may include a control unit.

According to the present invention, since the satellite orbit information can be received via GPS, DMB, near field communication, or USB, real-time updating is possible through various methods in case of communication failure, and accordingly, A-GPS method can be quickly and accurately. Location tracking is possible.

In addition, there is an effect that does not have to bear the cost of using the communication network when updating the orbit information of the satellite.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the personal terminal to which the GPS-based position measurement supplement method according to an embodiment of the present invention.

1 is a block diagram of a system for supplementing GPS-based position measurement according to an embodiment of the present invention.

The system according to an embodiment of the present invention includes a personal terminal 100 capable of GPS-based position measurement, which personal terminal 100 is connected to the satellite 200, DMB broadcasting station server 300, local area communication The hub center 400 may be implemented in connection with the USB memory 500.

For this purpose, the personal terminal 100 basically communicates with the satellite 200 and the DMB broadcasting station server 300 and the hub center 400 to receive information from them, and the USB memory 500. And a USB interface 130 for performing an interface.

Accordingly, the personal terminal 100 receives satellite orbit information from the satellite 200 and receives an SDI message transmitted from the DMB broadcasting station server 300 through the DMB base station 350. In addition, satellite orbit information transmitted from the hub center 400 may be received through short-range communication, or satellite satellite information may be read and provided from a USB memory 500 connected to the USB interface 130.

Here, the DMB broadcasting station server 300 may include a satellite DMB broadcasting server or a terrestrial DMB broadcasting server. Since the SDI message transmitted from the DMB broadcasting station server 300 has its own satellite orbit information, the personal terminal 100 receiving the satellite orbit information may perform position measurement in the A-GPS method.

The hub center 400 refers to a zone that can be connected through short-range communication, and a short-range communication module is built therein to transmit satellite orbit information at regular intervals.

The hub center 400 may be installed at various points or areas distributed in each region. Therefore, since the hub center 400 according to the embodiment of the present invention is provided in plural places to enable short-range communication, communication disturbances between the personal terminals 100 may be eliminated as compared to the DMB broadcasting station server 300.

For example, when applied to the location tracking of the vehicle, the hub center 400 may be installed at each gas station point. Therefore, when a vehicle equipped with a navigation terminal enters an area capable of short-range communication in the vicinity of a gas station, it receives satellite orbit information transmitted from the hub center 400 through short-range communication.

In an embodiment of the present invention, the short range communication may include a Bluetooth, a Zigbee, a Radio Frequency IDentification (RFID), a Wi-Fi module, and the like.

The hub management server 450 manages each hub center 400, and provides satellite orbit information to each hub center 400 at predetermined intervals. Accordingly, the hub management server 450 according to an embodiment of the present invention may form an intranet for performing data communication with each hub center 400.

In contrast, the update server 550 is a server that can be accessed by anyone who has internet access, and updates and manages the latest information on satellite orbit information at regular intervals.

The USB memory 500 is connected to the update server 550 by wire or wirelessly through an internet-enabled device to download the latest information on satellite orbit information.

In this case, the user's identification number key is stored in the USB memory 500 so that the user can automatically update the latest information on the satellite orbit information without the user's login process when connected to the Internet-enabled device.

In general, when a user accesses the update server 550 of the product homepage, the user must be authenticated by logging in for every update. The USB memory 500 according to the embodiment of the present invention may delete the authentication procedure.

Here, the Internet-enabled device may include a computer, a PDA, a mobile phone, a cellular phone, and the like.

Therefore, the personal terminal 100 according to the embodiment of the present invention receives satellite orbit information transmitted from the DMB broadcasting station server 300 through the DMB when it is necessary to update satellite orbit information necessary for GPS-based position measurement. However, when an error occurs in DMB reception due to a failure such as DMB communication, it is possible to receive and update desired information through a hub center using near field communication or through the USB memory 500.

Specifically, FIG. 2 shows a configuration for updating using short-range communication.

As described above, the central hub management center 450 forms an intranet with a plurality of hub centers 400-1 to 400-6 installed in each region as described above, thereby forming each hub center 400-1 to 400-6. ) Provides satellite orbit information.

Then, each hub center 400-1 to 400-6 transmits satellite orbit information, and a plurality of personal terminals 100-1 and 100-2 are transmitted to each hub center 400-1 to 400-6. By entering the communication area (R) capable of short-range communication by the satellite orbit information transmitted from the hub center (400-1 to 400-6) through the short-range communication.

In addition, when a plurality of personal terminals 100-1 and 100-2 exist in the same communication area R capable of short-range communication, short-range communication between terminals may be possible. In this case, one personal terminal 100-1 may receive satellite orbit information through the corresponding hub centers 400-1 to 400-6, but may also be provided through other personal terminals 100-2. Can be.

In this case, one personal terminal 100-1 may use unique identification information for identifying the terminal from the other personal terminal 100-2 and a GPS chip which performs location tracking using the A-GPS method. In this case, the other personal terminal 100-2 is basically provided with information about the most recently updated time.

According to this configuration, since a plurality of personal terminals (100-1, 100-2) can receive satellite orbit information using short-range communication without using a separate base station or a network, the cost of using and building a network can be eliminated It is possible to solve the reception error caused by the DMB communication failure.

Internal configurations of the personal terminals 100-1 and 100-2 are as follows.

For reference, FIG. 3 is a configuration diagram of a personal terminal according to an embodiment of the present invention. As shown in FIG. 3, the personal terminal 100 according to the embodiment of the present invention is a communication unit 110 and a GPS receiving module 112. The DMB receiving module 114 and the short-range communication module 116, the data processing unit 120, the USB interface unit 130, the control unit 140, the storage unit 150, and the position measuring unit 160 are included.

The GPS receiving module 112 receives satellite orbit information and PR information from a GPS satellite.

The DMB receiving module 114 is activated under the control of the controller 140 and tunes to the DMB base station 350 of FIG. 1. By tuning, the DMB receiving module 114 receives the SDI message from the DMB broadcasting station server (300 in FIG. 1).

In this case, the SDI message may include satellite orbit information, a satellite orbit information reception time of the DMB broadcasting station server, and latitude / longitude information of the DMB broadcasting station server or the DMB base station. Therefore, satellite orbit information necessary for position measurement can be obtained from the SDI message.

The short range communication module 116 is activated under the control of the controller 140 to receive the satellite orbital degree through short range communication with a neighboring hub center or another personal terminal. The short range communication module 116 may replace the function of the DMB receiving module 114 to obtain desired information through short range communication.

For this purpose, the hub center or other personal terminal should upload the latest information about satellite orbit information.

For example, in the case of performing short-range communication between personal terminals, the short-range communication module 116 may use the unique identification information of the terminal from the counterpart personal terminal and a GPS chip that performs location tracking using the A-GPS method. And basically receive information on the time of the latest update from the personal terminal of the other party. This is a process for confirming in advance whether the personal terminal of the user is compatible with the other terminal personal terminal.

The data processor 120 decodes data received through the communicator 110, that is, the GPS receiver module 112, the DMB receiver module 114, and the short-range communication module 116, and transmits data to be transmitted through the communicator 110. Responsible for data processing coding.

The USB interface 130 interfaces with a USB memory (500 of FIG. 1).

The storage unit 150 stores a program necessary for position measurement, and stores satellite orbit information received through the communication unit 110 or read through the USB interface 130. In particular, whenever the latest information of satellite orbit information is updated, it is updated.

The position measuring unit 160 measures the position using the PR information from the GPS receiving module 112 and the satellite orbit information received through the DMB receiving module 114, the short range communication module 116, or the USB interface 130. do.

The controller 140 controls the overall operation of the personal terminal 100.

In particular, the controller 140 according to an embodiment of the present invention checks whether an update event for satellite orbit information has occurred and determines whether or not the satellite orbit information is valid.

When the update event for the satellite orbit information is generated through this, the controller 140 determines the validity of the satellite orbit information stored in the storage unit 150 and activates the DMB receiving module 114 if it is not valid, and then the DMB. The storage module 150 transmits the satellite orbit information received through the reception module 114 to the storage unit 150.

In this case, when an error occurs in the reception through the DMB receiving module 114, the controller 140 may activate the short-range communication module 116 and transmit it to the storage 150 to update the satellite orbit information received therefrom. .

In addition, when the USB memory (500 of FIG. 1) is connected to the USB interface 130, satellite orbit information is read from the USB memory (500 of FIG. 1) and transferred to the storage unit 150.

Therefore, if the personal terminal 100 according to the embodiment of the present invention has a configuration for the short-range communication module 116 and the USB interface 130 therein, when updating the satellite orbit information necessary for GPS location measurement, Satellite orbit information can be obtained without using a base station or a network.

Hereinafter, a GPS-based location measurement supplement method using the personal terminal will be described in detail.

4 is a flowchart illustrating a GPS-based position measurement complementary method according to an exemplary embodiment of the present invention, and FIGS. 5 and 6 are detailed flowcharts of a process of updating satellite orbit information of FIG. 4.

First, referring to FIG. 4, in a method of receiving satellite orbit information and pseudo range (PR) information from a satellite using a GPS receiving module of a personal terminal and measuring a current position, an update event for satellite orbit information If is generated, the validity of the satellite orbit information stored in the storage of the personal terminal is determined (S100, S200).

Here, the update event may be when power is supplied to the personal terminal or when a predetermined update period is reached.

The validity judgment is based on whether the most recently stored satellite orbit information is valid with reference to the update time, or whether the most recently stored satellite orbit information is different from the received satellite orbit information with reference to a version of the information. Can be judged.

As a result of the determination, if the satellite orbit information is not valid, the satellite orbit information is updated, and if the satellite orbit information is valid, the information stored in the personal terminal is maintained as it is (S300, S400).

As an example, the process using the short-range communication with the DMB in the step of updating the satellite orbit information (S400) in detail, first, the personal terminal 100 to obtain the satellite orbit information as shown in FIG. Tuning through the DMB receiving module by applying power to the DMB receiving module and activating it (S410).

In this case, the DMB broadcasting station server 300 transmits satellite orbit information in a broadcasting manner, and the personal terminal 100 receives satellite orbit information transmitted from the DMB broadcasting station server 300 in response to tuning (S430). Reception is via the DMB receiving module.

Thereafter, the personal terminal 100 determines whether an error occurs in the reception of the DMB (S440).

If the DMB reception is normal, the satellite orbit information received through the DMB receiving module is updated to the storage unit (S492), and if an error occurs in the DMB receiving unit, power is supplied to the short-range communication module of the personal terminal 100 to be activated (S450). ).

After the short-range communication module is activated, when the personal terminal 100 enters a communication area capable of short-range communication with the neighboring hub center 400, the terminal 100 receives corresponding satellite orbit information from the hub center 400 (S460 and S480).

At this time, the hub center 400 periodically transmits satellite orbit information in the communication area (S470), and the terminal entering the communication area acquires satellite orbit information transmitted from the hub center 400.

Thereafter, the personal terminal 100 may once again determine whether there is an error in reception through the short-range communication module (S490).

If the reception through the short range communication module is normal, the received satellite orbit information is updated to an internal storage unit (S492), and if there is an error, this is notified (S494).

In the present embodiment, short-range communication refers to any one of Bluetooth, Zigbee, wireless connection recognition technology (RFID), and Wi-Fi (WiFi).

As another example, the process of using the USB in the step of updating the satellite orbit information (S400 of FIG. 4) will be described in detail. First, in order to acquire the satellite orbit information, as shown in FIG. Download and record the satellite orbit information (S510).

Here, the download of satellite orbit information uses a method of downloading the latest information on satellite orbit information by connecting to an update server via a wired or wireless connection via an internet-enabled device, that is, a computer, a PDA, a mobile phone, a cellular phone, or the like.

At this time, the USB memory 500 is stored in the user's identification number key (key), when connected to the Internet-enabled device has a feature that can automatically update the latest information on the satellite orbit information without the user login process. This can eliminate the user authentication procedure.

Subsequently, when the USB memory 500 is connected to the personal terminal 100, the personal terminal 100 reads data recorded in the USB memory 500 through the USB interface and downloads satellite orbit information to the internal storage. (S520 to S540).

The satellite orbit information is updated with the latest information through the download (S550).

As described above, in the embodiment of the present invention, a method of updating using near field communication and a method of updating using USB are independently described. However, when an error occurs in the near field communication, an application may be implemented to use USB as a substitute for near field communication. Can be. In addition, since the USB is implemented so that it can be executed immediately at the same time as the connection, if the USB is connected due to a DMB reception error, the USB can be updated immediately without activating the short range communication module.

In addition, in the case where a personal terminal uses CDMA communication, when an error occurs in short-range communication, the terminal may be activated to activate the CDMA module so that an update may be performed using a paid CDMA network.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that.

Therefore, since the embodiments described above are provided to completely inform the scope of the invention to those skilled in the art, it should be understood that they are exemplary in all respects and not limited. The invention is only defined by the scope of the claims.

1 is a block diagram of a system for supplementing GPS-based position measurement according to an embodiment of the present invention.

2 is a diagram illustrating a network configuration for implementing short-range communication in a system for supplementing GPS-based location measurement according to an embodiment of the present invention.

3 is a block diagram of a personal terminal according to an embodiment of the present invention.

4 is a flowchart illustrating a GPS-based position measurement supplement method according to an embodiment of the present invention.

5 and 6 are detailed flowcharts of a process of updating satellite orbit information of FIG. 4.

Description of the Related Art

100: personal terminal 110: communication unit

112: GPS receiving module 114: DMB receiving module

116: short-range communication module 120: data processing unit

130: USB interface 140: control unit

150: storage unit 160: position measuring unit

200: satellite 300: DMB broadcasting server

350: DMB base station 400: hub center

500: USB memory 550: location information server

Claims (11)

In the method for measuring the current position by receiving satellite orbit information and pseudo range (PR) information from the satellite using a GPS receiving module, (a) determining the validity of the satellite orbit information when an update event for the satellite orbit information occurs; (b) activating a DMB receiving module if the satellite orbit information is invalid; (c) receiving satellite orbit information transmitted from a DMB broadcasting station server through the DMB receiving module; (d) activating a local area communication module or connecting a USB memory when an error occurs in the reception; And (e) updating satellite orbital information received through or read from the USB memory module; GPS-based location tracking supplement method using a DMB and Internet local area communication comprising a. The method of claim 1, If the local area communication module is activated in step (d), GPS-based location tracking complementary method using DMB and Internet short-range communication, characterized in that to receive satellite orbit information transmitted from the hub center in the area capable of short-range communication. The method according to claim 1 or 2, If the local area communication module is activated in step (d), GPS-based location tracking complementary method using DMB and Internet local area communication, characterized in that to receive satellite orbit information from another terminal by performing communication between other terminals in the area capable of short-range communication. The method of claim 1, Before connecting the USB memory in the step (d), Comprising the step of uploading the latest information on the satellite orbit information to the USB memory, GPS-based location tracking complementary method using the local area communication with the Internet. The method of claim 4, wherein The USB memory stores a user identification number key, and when connected to an Internet-enabled device, GPS-based DMB and Internet local area communication can automatically update the latest information on the satellite orbit information without a login process. Location tracking complementary method. The method of claim 1, The short range communication module, A GPS-based location tracking complementary method using DMB and Internet local area communication, which is any one of a Bluetooth module, a zigbee module, a wireless access recognition technology (RFID) module, and a Wi-Fi module. In a terminal for receiving satellite orbit information and pseudo range (PR) information from a satellite through a GPS receiver module mounted therein, and measuring a current position, A DMB receiving module for receiving satellite orbit information transmitted from a DMB broadcasting station server; A near field communication module configured to receive satellite orbit information from a hub center accessible through near field communication; A USB interface for interfacing with a USB memory; A storage unit storing the satellite orbit information; And When the update event for the satellite orbit information is generated, the DMB receiving module is activated, and afterwards, the satellite orbit information received through the DMB receiving module is updated in the storage unit, and an error is received in the receiving through the DMB receiving module. A control unit which activates the near field communication module and updates satellite orbit information received through the near field communication module to the storage unit or updates satellite orbit information from the USB memory connected to the USB interface to update the storage unit. Personal terminal comprising a. The method of claim 7, wherein And the latest information on the satellite orbit information is downloaded to the USB memory. The method of claim 8, The USB memory is a personal terminal characterized in that the identification number key for each user is stored, and can be automatically updated without a login process when connected to an Internet-enabled device. The method of claim 7, wherein The short range communication module Personal terminal, characterized in that any one of a Bluetooth module, a Zigbee module, a wireless connection recognition technology (RFID) module, a Wi-Fi (WiFi) module. The method of claim 7, wherein The short range communication module, And communicate with another personal terminal in the communication area capable of short-range communication to receive satellite orbit information from the other personal terminal.

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