KR101079997B1 - System and method for providing vehicle location information using wireless bridge - Google Patents

Abstract

The present invention relates to a system and a method for providing a moving object position information using a relay device, a mobile relay device installed on a high-speed moving object (for example, a train, subway, etc.) and a fixed relay device is provided along the driving route and given an index System and method for providing mobile location information using a relay device for providing location information of a mobile device by installing software without additional physical equipment even in a region where a GPS signal cannot be received using To provide.

To this end, the present invention is a system for providing a moving object position information, comprising: a plurality of fixed relay devices installed along a moving path of a moving object and given an identification index; A mobile repeater mounted on the mobile unit for wirelessly communicating with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; The access point for supporting a terminal to access a network; And receiving the index of the first fixed relay device in which a wireless link is currently established with the mobile relay device, searching for the location information according to the location information request signal from the terminal, and transmitting the first fixed relay device, the mobile relay device, And a server for transmitting to the terminal via the mobile router and the access point.

Relay device (fixed relay device, mobile relay device), fixed relay device index, location information transmission, location information broadcasting, moving object location information providing system

Description

System and method for providing moving object location information using a relay device {System and method for providing vehicle location information using wireless bridge}             

1 is a configuration diagram of a wireless LAN system including a mobile unit location information providing system using a wireless LAN relay apparatus according to the present invention;

2 is a diagram illustrating an embodiment of a train equipped with a moving object location information system using a wireless LAN relay apparatus according to the present invention;

3 is a configuration diagram of another embodiment of a wireless LAN system including a mobile unit location information providing system using a wireless LAN relay according to the present invention;

4 is an explanatory diagram for a handover method between general relays;

FIG. 5 is a detailed diagram of one embodiment of the display device of FIG. 3; FIG.

Figure 6 is a detailed description of one embodiment of the control device of Figure 3,

7 is a flowchart illustrating an embodiment of a method for providing mobile location information using a wireless LAN relay apparatus according to the present invention;

8 is a flowchart illustrating another embodiment of a method for providing mobile location information using a WLAN relay apparatus according to the present invention.

* Explanation of symbols for the main parts of the drawings

301: Router 302: Internet

303: fixed relay device 304: first wireless LAN antenna

305: second wireless LAN antenna 306: mobile relay device

307: mobile router 308: control device

309: access point (AP) 310: display device

311: wireless LAN terminal

The present invention relates to a system and a method for providing a moving object position information using a relay device, and more particularly, an index is provided along a moving route and a moving route installed in a high speed moving object (for example, a train or a subway). In order to provide the position information of the moving object by installing the software without additional physical equipment even in the area where the satellite positioning system (GPS) signal cannot be received by using the fixed relay device A system and method thereof are provided.

In the following embodiment, a wireless LAN relay apparatus will be described as an example.

In the present invention, a wireless LAN terminal refers to a terminal that performs wireless communication by mounting a wireless LAN card such as a notebook computer, a personal digital assistant (PDA), and the like.

In general, a WLAN is a network having a transmission rate of 11 Mbps in accordance with the IEEE 802.11b standard based on transmission control protocol / Internet protocol (TCP / IP). The WLAN transmits information in the Industrial Scientific Medical (ISM) band through a MAC (Medium Access Controller) bridge connected to a network interface of TCP / IP. Currently, a system for extending a wireless LAN subscriber service area limited to a specific region into a moving train and a train carriage to enable a seamless WLAN service even in a moving train carriage is being developed.

The wireless LAN system currently under development installs a fixed repeater at intervals of several hundred m to several km along the periphery of the railway and installs a mobile repeater on the moving object. Fixed repeaters are installed at appropriate distances depending on LOS (Line of Sight) availability and radio wave environment. Mobile repeaters are connected to each passenger's access point (AP) by UTP cable.

Meanwhile, a satellite positioning system (GPS) receiver, which receives navigation data from a GPS satellite and measures the geographical coordinates at which the receiver is currently located. In addition to surveying and military applications, it is applied to various fields such as leisure, car navigation system and road traffic information indicator.

The principle is that the GPS receiver on the ground receives the navigation data from at least three GPS satellites and calculates the time difference of the radio waves received from each GPS satellite to determine the current position. Within, usually has a coordinate error within 30 meters.

However, since the GPS receiver receives a radio wave from a GPS satellite to determine a location, when the satellite signal is weak or cannot be received, accurate positioning is difficult. That is, the satellite reception may be blocked while the moving object is operating in the tunnel or in the underground section, or while the high-rise building is passing through a dense area, and thus, accurate location information may not be received.

The present invention has been proposed in order to solve the above problems, the positioning of satellites by using a mobile relay device installed on a high-speed moving object (for example, a train, subway, etc.) and a fixed relay device which is indexed and installed along a driving route In order to provide the position information of the moving object using a relay device to provide the position information of the moving object by installing the software without additional physical equipment even in a region where the system (GPS) signal cannot be received, the object thereof is to provide have.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

A first system of the present invention for achieving the above object is a system for providing position information of a moving object, comprising: a plurality of fixed relay devices installed along a moving path of a moving object and given an identification index; A mobile repeater mounted on the mobile unit for wirelessly communicating with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; The access point for supporting a terminal to access a network; And receiving the index of the first fixed relay device in which a wireless link is currently established with the mobile relay device, searching for the location information according to the location information request signal from the terminal, and transmitting the first fixed relay device, the mobile relay device, And a server for transmitting to the terminal via the mobile router and the access point.

In addition, the first system of the present invention further includes a display device for displaying the broadcasted location information.

On the other hand, the second system of the present invention, in the moving object position information providing system, a plurality of fixed relay device is provided along the moving path of the moving object is given an index for identification; A mobile repeater mounted on the mobile unit for wirelessly communicating with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; The first fixed relay device, the mobile relay device, and the mobile router by receiving an index of the first fixed relay device in which the mobile relay device and the current wireless link are formed and searching for the location information stored corresponding to the index. And a server for broadcasting through the access point; And a display device for displaying the broadcasted location information.

On the other hand, the method of the present invention, moving object position information providing method, the moving object position information providing apparatus for storing the index of the fixed relay device and the position information matched to the index in a database; An index acquiring step of acquiring, by the mobile unit position information providing device, an index of a first fixed relay device in which a wireless link is currently established with a mobile relay device; A positioning step of confirming a position of the first fixed repeater using the obtained index; A search step of searching the database for location information according to the identified location; And a transmitting step of transmitting the retrieved location information.

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On the other hand, the third system of the present invention, a moving object position information providing system, mounted on the moving body for communicating wirelessly with a fixed relay device; A mobile router for connecting the mobile relay device and an access point to process communication traffic; The access point for supporting a terminal to access a network; And receiving the index of the first fixed relay device in which a wireless link is currently established with the mobile relay device, and retrieving the location information according to the location information request signal from the terminal to the terminal through the mobile router and the access point. And a control device for transmitting.

The third system of the present invention further includes a display device for displaying the broadcasted location information.

On the other hand, the fourth system of the present invention, in the mobile unit position information providing system, a mobile repeater mounted on the mobile unit for wireless communication with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; A control device for receiving the index of the first fixed relay device in which the mobile relay device and the current wireless link are currently formed, and searching for location information stored in correspondence with the index to broadcast through the mobile router; And a display device for displaying the broadcasted location information.

On the other hand, another method of the present invention, the method of providing a moving object position information using a relay device, the control device stores the index of the fixed relay device and the position information matched to the index in a database; An index acquiring step, wherein the control device acquires an index of the first fixed relay device in which a wireless link is currently established with the mobile relay device; A positioning step of confirming a position of the first fixed repeater using the obtained index; A search step of searching the database for location information according to the identified location; And a transmitting step of transmitting the retrieved location information.

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The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

That is, the present invention detects which fixed relay is connected to the mobile relay device of the moving vehicle by using the fixed relay device to which the identifiable index is assigned, and obtains the position information of the mobile object through linkage with the corresponding location information database. It can be figured out. This allows the general passengers to broadcast information on the area where the vehicle is currently passing through the display device, or to the desired passengers a wireless LAN terminal (laptop or PDA) equipped with an in-vehicle terminal or a wireless LAN card carried by the passengers. Can be provided through.

1 is a diagram illustrating an embodiment of a WLAN system including a system for providing mobile location information using a WLAN relay apparatus according to the present invention.

As shown in FIG. 1, a WLAN system including a mobile location information providing system using a WLAN relay apparatus according to an embodiment of the present invention includes a first WLAN antenna 104 and determines a moving path of the mobile device 10. A plurality of fixed relays 103 installed along with the indexes for identification, a router 101 for connecting the plurality of fixed relays 103 and the Internet 102, the router 101 and a web server ( Mobile repeater 106 including a second wireless LAN antenna 105 for wirelessly communicating with the fixed relay device 103, the Internet 102 for connecting the 110, the mobile unit 10, The mobile router 107 for connecting the mobile relay device 106 and the access point 108 to process communication traffic, the access point 108 for supporting the wireless LAN terminal 109 to access the wireless LAN, and The current connection with the mobile repeater 106 Retrieves the location information and additional information according to the location information request signal from the wireless LAN terminal 109 by receiving the index of the relay device 103, and retrieves the retrieved location information and additional information through the respective components. Web server 110 for transmitting to the terminal 109, and additionally retrieve the location information and additional information as described above to the display device 111, the mobile object received from the web server 110 ( 10) a wireless LAN terminal 109 for displaying the location information and the additional information, and a display device for displaying the location information and the additional information of the mobile object 10 broadcasted from the web server 110.

Here, the additional information refers to additional information having an entertainment function, such as tourism information about the surroundings in which the mobile body is currently operating.

At this time, the access point (AP) 108 is installed inside the moving object (train) 10 so that the wireless LAN terminal 109 inside the moving object 10 connects to the access point (AP) 108, and the moving object The mobile relay device 106 is installed at 10 to connect the internal access points 108 and the mobile relay device 106 through the mobile router 107 by wire. In addition, a plurality of fixed relays 103 are installed along the path of the moving object 10 to wirelessly connect with the mobile relay 106, and the plurality of fixed relays 103 are wired to the router 101. Is connected. The router 101 is connected to the Internet 102.

The fixed relay device 103 is a wireless LAN relay device installed along the moving path of the moving object 10, and forms a wireless link with the moving relay device 106 installed in the moving object 10 from the mobile relay device 106. It serves to send traffic to the router 101 or to handle traffic in the opposite direction.

The mobile relay device 106 is a wireless LAN relay device installed in the moving object 10, and forms a wireless link with a neighboring fixed relay device 103 to transfer traffic from the fixed relay device 103 to the mobile router 107. It is responsible for transmitting to the access point (AP) 108 in the mobile unit 10 or handling traffic in the opposite direction.                     

In addition, the access point (AP) 108 is mounted in each passenger vehicle of the moving object 10 to connect the wireless LAN terminal 109 using a wireless LAN frequency such as 2.4 GHz or 5 GHz.

Meanwhile, in the above-described embodiment, the web server 110 transmits the location information searched according to the location information request signal of the WLAN terminal 109 to the corresponding WLAN terminal 109 and transmits the location information to the display device 111. Although broadcasting the retrieved location information has been described together, it may be applied to each of the independent embodiments.

2 is a diagram illustrating an embodiment of a train equipped with a moving object location information system using a wireless LAN relay apparatus according to the present invention.

As illustrated in FIG. 2, a train equipped with a mobile location information system using a wireless LAN relay device includes a locomotive 21 equipped with a mobile relay device, a mobile router, a control device, and an access point, and an access point for each passenger vehicle. It includes a plurality of carriages 23 equipped with.

On the other hand, the plurality of access points are connected by cable (eg, UTP cable) 22 to communicate by wire.

3 is a configuration diagram of another embodiment of a wireless LAN system including a mobile unit location information providing system using a wireless LAN relay apparatus according to the present invention.

As illustrated in FIG. 3, a WLAN system including a mobile location information providing system using a WLAN relay apparatus according to the present invention includes a first WLAN antenna 304 and determines a moving path of the mobile device 10. A plurality of fixed relay devices 303 installed along with the identification indexes, routers 301 for connecting the plurality of fixed relay devices 303 and the Internet 302, and fixed to the moving object 10 are fixed to the fixed objects. A mobile relay device 306 including a second WLAN antenna 305 for wirelessly communicating with the relay device 303, and connecting the mobile relay device 306 to the access point 309 to process communication traffic. The mobile router 307, the access point 309 for allowing the wireless LAN terminal 311 to access the wireless LAN, the fixed relay device 303 is installed inside the mobile body and currently connected to the mobile relay device 306 No index is passed) The location information and the additional information according to the location information request signal from the LAN terminal 311 are searched, and the searched location information and the additional information are transmitted through the mobile router 307 and the access point 309. 311, a control device 308 for broadcasting the location information and additional information retrieved as described above to the display device 310, the moving object 10 received from the control device 308 It includes a wireless LAN terminal 311 for displaying the location information and the additional information of the display device 310 for displaying the location information and the additional information of the mobile unit 10 broadcast from the control device (308).

Meanwhile, in the above-described embodiment, the control device 308 transmits the location information searched according to the location information request signal of the WLAN terminal 311 to the corresponding WLAN terminal 311, and transmits the location information to the display apparatus 310. Although broadcasting the retrieved location information has been described together, it may be applied to each of the independent embodiments.

4 is an explanatory diagram for a handover method between general relay devices.                     

As shown in FIG. 4, the mobile repeater 43 and the fixed repeater 41 are connected to each other by radio frequency (RF) in the history from which the movable body 44 starts, and the fixed relay when the movable body 44 travels. Handover between devices continues to connect to the Internet until the end. Handover takes place between two stationary repeaters 41 and 42 located closest to the mobile repeater 43 mounted on the moving vehicle 44. Radio frequency (RF) is a fixed relay that transmits a stronger antenna radio signal by comparing the signal strength accumulated for a predetermined time with the antenna radio signal strength between the mobile repeater 43 and the two fixed repeaters 41 and 42. ) Link is established.

The process is described in detail as follows. Currently, the mobile repeater 43 of the mobile body has a session with the first fixed repeater 41, and traffic exists in both directions. At this time, as the moving body 44 approaches the second fixed repeater 42, the mobile repeater 43 receives a beacon signal periodically transmitted by the second fixed repeater 42. When the beacon signal is received, the mobile repeater 43 compares whether the threshold value is greater than or equal to the intensity of the signal received from the first fixed repeater 41 in which the current session is formed.

As a result of the comparison, if the intensity of the signal received from the second fixed repeater 42 is not greater than or equal to the threshold, the signal is ignored. If the intensity of the signal is greater than or equal to the threshold, the received beacon signals are sequentially fixed to the next fixed repeater 42. It is determined whether the signal is transmitted from or is transmitted from another fixed relay device.

As a result of the determination, it is ignored if the received signal is a signal transmitted from another fixed relay device. On the other hand, if the received signal is a beacon signal transmitted from the second fixed repeater 42 which is the next in sequence, the mobile repeater 43 immediately sends a second fixed repeater to the first fixed repeater 41. Informing that there is a handover to 42, a session is established with the second fixed relay 42.

FIG. 5 is a detailed diagram illustrating an exemplary embodiment of the display apparatus of FIG. 3.

As shown in FIG. 5, the display apparatus 310 includes an image processor 51 for processing position information and additional information of the moving object 10 received from the controller 308, the image processor 51 and the display unit. Ethernet connection unit 52 for connecting 53, display unit (e.g., thin film transistor liquid crystal display (TFT-LCD)) 53, and detailed options of the display device 310 (e.g., screen brightness, screen size, etc.) Display adjustment unit 54 for adjusting ().

FIG. 6 is a detailed diagram of an embodiment of the control device of FIG. 3.

As shown in FIG. 6, the control device 308 retrieves the location information and additional information according to the location information request signal from the WLAN terminal 311 and transmits the location information and additional information to the WLAN terminal 311, and additionally. As described above, the central processing unit (CPU) 61 for searching and broadcasting the location information and the additional information to the display device 310, the program for providing the location information, and the index of the fixed relay device are matched with the corresponding information. A plurality of storage units (ROM) 62, a flash memory 63, a RAM 64, which store position information, and a power supply unit 65 for supplying power to the control device 308. And a touch screen 67 for displaying a menu so as to upgrade a program of the control device 308 or to modify a database, and a monitor 66 having the touch screen 67.

7 is a flowchart illustrating an embodiment of a method for providing mobile location information using a WLAN relay apparatus according to the present invention.

First, the fixed relay device 103 is given a unique index for identification, and the web server 110 stores the index of the fixed relay device 103 and corresponding position information in the database.

First, the mobile relay device 106 detects the fixed relay device 103 to which a wireless link is currently formed and connected (701).

The mobile relay device 106 checks the index of the fixed relay device 702, and the index of the fixed relay device 103 is transmitted to the external web server 110 through the router 101 and the Internet 102. Transmit (703). Here, the web server 110 may obtain the index of the fixed relay device 103 in various other ways.

Thereafter, the web server 110 checks the location using the obtained index of the fixed relay 103 (704).

Thereafter, the web server 110 searches for location information and additional information about the corresponding location in a database (705) and transmits the searched location information and additional information (706).

Here, the additional information refers to additional information having an entertainment function, such as tourism information about the surroundings in which the mobile body is currently operating.

Here, the web server 110 may transmit the retrieved location information and additional information to the corresponding WLAN terminal 109 requesting the location information according to the location information request signal of the WLAN terminal 109.

In addition, the web server 110 may broadcast the searched position information and additional information to the display device 111 of the mobile body 10.

8 is a flowchart illustrating another embodiment of a method for providing location information using a WLAN relay apparatus according to the present invention.

First, the fixed relay device 303 is given a unique identification index, and the control device 308 stores the index of the fixed relay device 203 and corresponding position information in the database. An operator such as an engineer or an electrician may view a screen displayed on the monitor 66 and operate a touch screen 67 to upgrade a program (software) or to modify the database. As such, the location information providing system using the WLAN relay device can be maintained and managed using a broadband WLAN network in a mobile unit through a simple operation in an engine room.

First, the control device 308 detects the fixed relay device 303 to which a wireless link is currently formed and connected (801).

When the control device 308 obtains the index of the fixed relay device (802), the position is confirmed using the obtained index of the fixed relay device (303) (803). Here, the control device 308 may obtain the index of the fixed relay device 303 in various other ways.

Thereafter, the control device 308 searches for location information and additional information about the corresponding location in a database (804), and transmits the searched location information and additional information (805).

Here, the control device 308 may transmit the retrieved location information and additional information to the corresponding WLAN terminal 311 requesting the location information according to the location information request signal of the WLAN terminal 311.

In addition, the control device 308 may broadcast the searched position information and additional information to the display device 310.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk). Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, GPS positioning signal (GPS) signal using a mobile relay device installed on a high-speed moving object (for example, a train, subway, etc.) and a fixed relay device is provided along the running route is indexed Even in areas that cannot be received, it is possible to provide location information of a moving object by installing software without additional physical equipment.

In addition, the present invention, by broadcasting the location information of the moving object has an effect that can be expanded to provide the entertainment function by additionally airing the contents of the tourism information, such as the surrounding of the current operation.

In addition, the present invention has the effect of increasing the efficiency of service operation while pursuing low cost and ease of configuration by using a broadband wireless communication network system in a mobile vehicle.

Claims (17)

In the mobile position information providing system, A plurality of fixed relay devices installed along a moving path of the moving object and provided with an identification index; A mobile repeater mounted on the mobile unit for wirelessly communicating with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; The access point for supporting a terminal to access a network; And The first fixed relay device, the mobile relay device, and the mobile station apparatus by receiving the index of the first fixed relay device in which a wireless link is currently established with the mobile relay device, and retrieving the location information according to the location information request signal from the terminal. Server for transmitting to the terminal via a mobile router and the access point Moving object position information providing system using a relay device comprising a. The method of claim 1, The server, Receiving the index of the first fixed relay device, and further performs the function of searching and broadcasting the location information, the mobile unit position information providing system using a relay device. The method of claim 2, Display device for displaying the broadcasted location information Moving position information providing system using a relay device further comprising. In the mobile position information providing system, A plurality of fixed relay devices installed along a moving path of the moving object and provided with an identification index; A mobile repeater mounted on the mobile unit for wirelessly communicating with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; The first fixed relay device, the mobile relay device, and the mobile router by receiving an index of the first fixed relay device in which the mobile relay device and the current wireless link are formed and searching for the location information stored corresponding to the index. And a server for broadcasting through the access point; And Display device for displaying the broadcasted location information Moving object position information providing system using a relay device comprising a. In the mobile position information providing system, A mobile repeater mounted on the mobile to communicate wirelessly with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; The access point for supporting a terminal to access a network; And Receives the index of the first fixed relay device, which is currently established with the mobile relay device, and retrieves the location information according to the location information request signal from the terminal and transmits the location information to the terminal through the mobile router and the access point. Controller Moving object position information providing system using a relay device comprising a. The method of claim 5, The control device, Storage means for storing the index of the fixed relay device and the position information matched with the index; Control means for retrieving and transmitting the position information of the moving object from the storage means according to the received index; And Display means for displaying a menu according to the control of the control means Moving object position providing system using a relay device comprising a. The method according to claim 5 or 6, The control device, Receiving the index of the first fixed relay device, and further performs the function of searching and broadcasting the location information, the mobile unit position information providing system using a relay device. The method of claim 7, wherein Display device for displaying the broadcasted location information Moving position information providing system using a relay device further comprising. In the mobile position information providing system, A mobile repeater mounted on the mobile to communicate wirelessly with the fixed repeater; A mobile router for connecting the mobile relay device and an access point to process communication traffic; A control device for receiving the index of the first fixed relay device in which the mobile relay device and the current wireless link are currently formed, and searching for location information stored corresponding to the index and broadcasting the information through the mobile router; And Display device for displaying the broadcasted location information Moving object position information providing system using a relay device comprising a. In the method for providing mobile body position information, Storing, by the mobile unit position information providing apparatus, an index of the fixed relay device and position information matched with the index in a database; An index acquiring step of acquiring, by the mobile unit position information providing device, an index of a first fixed relay device in which a wireless link is currently established with a mobile relay device; A positioning step of confirming a position of the first fixed repeater using the obtained index; A search step of searching the database for location information according to the identified location; And Transmission step of transmitting the retrieved location information Moving object position information providing method using a relay device comprising a. 11. The method of claim 10, The transmitting step, A method of providing moving object position information using a relay device, which is broadcast to a display apparatus of the moving object. 11. The method of claim 10, The transmitting step, Method for providing position information of a moving object using a relay device, transmitting the position information to the requesting terminal. In the method for providing mobile body position information using a relay device, Storing, by the controller, the index of the fixed relay device and the position information matched with the index in a database; An index acquiring step, wherein the control device acquires an index of the first fixed relay device in which a wireless link is currently established with the mobile relay device; A positioning step of confirming a position of the first fixed repeater using the obtained index; A search step of searching the database for location information according to the identified location; And Transmission step of transmitting the retrieved location information Moving object position information providing method using a relay device comprising a. The method of claim 13, The transmitting step, A method of providing moving object position information using a relay device, which is broadcast to a display device. The method of claim 13, The transmitting step, Method for providing position information of a moving object using a relay device, transmitting the position information to the requesting terminal. delete delete

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