JPWO2010109769A1 - Wireless transmission system - Google Patents

Abstract

In a wireless transmission system including a moving transmitting device, a receiving device that receives a radio wave transmitted from the transmitting device, and a display unit, for example, the transmission path and the failure area are more clearly displayed, and user transmission is performed. Supporting the decision on availability is quicker and more effective. In a wireless transmission system including a moving transmitting device, a receiving device that receives radio waves transmitted from the transmitting device, and a display unit, the display unit is located at two positions of the transmitting device and the receiving device. Is displayed on a three-dimensional map including the line connecting the two points and information on the obstacle to the wireless transmission between the two points.

Description

  The present invention relates to a wireless transmission system applicable to, for example, a remote control monitoring system using wireless transmission.

  As an example of a remote control monitoring system according to the present invention, a transmission side of a wireless transmission device that transmits video, audio, and data (broadcast material) at a high frequency of about 333 MHz or more called FPU (Field Pick-up Unit) There is a receiving base station system that is mounted on a relay car, a helicopter, etc., moved, received by a rotary receiving antenna device, and wirelessly transmitted to a fixed station such as a broadcasting station at a high frequency of about 3 GHz or more.

  FIG. 2 shows a screen display example of transmission path display using an electronic map in the operation terminal of the receiving base station used in the system. FIG. 2 shows an example of the antenna direction adjustment operation screen. Map display frame (201), reception point (202), transmission point (203), direction adjustment line indicating antenna angle (hereinafter also referred to as square line) (204), antenna angle information (205), profile information (206) is shown. Conventional transmission line display is a method of connecting two points plotted on a planar two-dimensional map with a straight line.

  This display method always has a viewpoint as if the ground surface is looked down from above, and information in the V (vertical, height) direction cannot be obtained only by the square line (204). Also, as a detailed display method of the transmission path, there is a profile display that vertically cuts the topography between two points, but since it is always information between two points, it is difficult to immediately determine the prospects of the surrounding area. is there. In using a display terminal equipped with these constituent means, it becomes difficult to identify and recognize a faulty area. In this configuration, there is a method to display the specified point on the map from the failure point on the profile between the two cut points, but it is necessary to specify each point and to check the surrounding area in a short time Is insufficient.

  Therefore, for example, when the transmission source is a mobile body, in order to determine whether the transmission path is in the line-of-sight position in the expected movement route, the minimum altitude and the current altitude required to be visible at each expected passing point There is a method to calculate and display the margin. If this method is used, it is possible to display profile calculation information when an arbitrary point is set as a transmission point on a map.

Patent Publication 2007-134915

The Institute of Electronics, Information and Communication Engineers MWE2004 Fundamental Lecture Tutoral Lecture Tokyo Institute of Technology Junichi Takada Basic Theory of Radio Wave Propagation http: // www. apmc-mwe. org / mwe2005 / ja_mwe2004_tutorial. htm

  In the above detailed display method of the transmission path, in expressing the overall line of sight on the plane map, the margin altitude up to the obstacle may be displayed or the ground height may be displayed on the map. The stepwise display method by color is the limit, and the information for the V (vertical, height) direction largely depends on the profile display obtained by cutting one transmission path in another window.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention has an object to provide a wireless transmission system that can clarify the display of a transmission path and a faulty area, and can more quickly and effectively support a user's determination of transmission availability. And

In order to achieve the above object, in the present invention, a wireless transmission system including a moving transmission device, a reception device that receives a radio wave transmitted from the transmission device, and a display unit has the following configuration. did.
That is, the display unit includes a three-dimensional map including the positions of the two points of the transmitting device and the receiving device, a line connecting the two points (for example, a square line), and a radio between the two points. Displays information about transmission failures.
Therefore, for example, it is possible to clarify the display of the transmission path and the faulty area, and to support the user's transmission availability determination more quickly and effectively.

Here, various devices may be used as the moving transmission device. For example, an FPU transmitter that is mounted on a moving body and moves according to the movement of the moving body may be used.
Various receiving apparatuses may be used. For example, an FPU receiver provided in a base station can be used.
Further, the display unit may be provided in any part of the system (for example, an apparatus). As one configuration example, the system includes a control apparatus (for example, an operation terminal) that controls the receiving apparatus. A display unit is provided in the control device, and as another configuration example, a display unit may be provided in a device such as an FPU transmitter or an FPU receiver, or display units may be provided in a plurality of places. Further, an operation unit by the user may be provided at an arbitrary place in the system, for example, may be provided at the same place as the display unit.

Various types of 3D maps may be used.
In addition, various information may be used as information regarding a failure in wireless transmission. For example, information such as a position where the failure exists, a characteristic of the failure, and a degree of the failure can be used.
In the display unit, for example, a line connecting two points and information on a failure in wireless transmission (and information on other display targets on the three-dimensional map) are superimposed on the three-dimensional map. Displayed.

The radio transmission system according to the present invention has the following configuration as an exemplary configuration.
That is, the display unit displays Fresnel zone information related to wireless transmission between the two points on the three-dimensional map.
Therefore, the status of wireless transmission can be visually presented to the user more clearly.
Here, as information on the Fresnel zone, for example, information on the first Fresnel zone can be used.

The radio transmission system according to the present invention has the following configuration as an exemplary configuration.
That is, when the line connecting the two points changes (for example, when redrawing), the display unit displays all or a predetermined part of the information displayed on the three-dimensional map as an afterimage. to continue.
Therefore, the afterimage can make it easier for the user to grasp the status of wireless transmission in various arrangements.
Here, various information may be used as the afterimage, and for example, a line connecting the two points, information on a failure, or the like can be used.

The radio transmission system according to the present invention has the following configuration as an exemplary configuration.
In other words, the display unit has a function of switching between display using a two-dimensional map and display using a three-dimensional map. In addition, the wireless transmission system includes a switching instruction unit that gives an instruction to switch the display unit using a two-dimensional map and a three-dimensional map.
Accordingly, the display using the two-dimensional map and the display using the three-dimensional map can be switched by a switching instruction operation by the user, and the convenience for the user can be further improved.
Here, as a mode of switching between the display using the 2D map and the display using the 3D map, for example, a mode of switching from the display using the 2D map to the display using the 3D map, A mode of switching from the used display to a display using a two-dimensional map or a mode of switching between these two directions can be used.

The radio transmission system according to the present invention has the following configuration as an exemplary configuration.
That is, the display unit has a function of performing display using a two-dimensional map and display using a three-dimensional map on a single screen.
Therefore, the user can confirm the display using the two-dimensional map and the display using the three-dimensional map on one screen, and can further improve the convenience for the user.

Next, another configuration example is shown.
As one configuration example, the display unit displays information on a plurality of receiving device candidates for one transmitting device (for example, information on the position of each candidate) using a two-dimensional map or a three-dimensional map.
As an example of the configuration, the display unit has a function of changing the attributes (for example, thickness, color, type, etc.) of the line connecting the two points according to the state of wireless transmission between the two points.
As one configuration example, the display unit displays information on propagation loss, diffraction loss, and the like in wireless transmission.
As an example of the configuration, the display unit displays information using a graphic as information regarding a failure.

Further, a configuration example will be shown below.
(Configuration Example 1-1) In an operation / display means for performing remote control monitoring for performing mobile relay wireless transmission at a high frequency of about 333 MHz or higher using an operation screen using a three-dimensional electronic map, 2 on the electronic map A display of a transmission path passing through a point (for example, a transmission point and a reception point) or an associated radio wave propagation area (eg, Fresnel zone), and an indication of a failure in the transmission path or the associated radio wave propagation area. Transmission line display method.
(Configuration Example 1-2) In the failure display of the transmission path display method of (Configuration Example 1-1), the method includes a step of calculating and displaying at least one of transmission loss of transmission radio waves or loss loss due to diffraction. A transmission path display method characterized by the above.

(Configuration Example 1-3) Updating of monitoring information in remote control monitoring using the transmission path display method of (Configuration Example 1-1) or (Configuration Example 1-2) or an operation using an operation unit (for example, A transmission path display method, wherein afterimages of the transmission path or the associated area and the fault area are displayed in redrawing on the display means when the transmission path changes (moves) by an explicit operation) .
(Summary of Configuration Examples 1-1 to 1-3) That is, using the operation screen using the three-dimensional electronic map, the integrated information of the transmission path is integrated on one screen and displayed comprehensively and effectively. A transmission path display method characterized by the above.

  As described above, according to the present invention, for example, on the operation / display means of the remote control monitoring system using wireless transmission, it is possible to easily identify the failure of the transmission path as compared with the conventional method.

It is a block diagram which shows the whole structure of a receiving base station system. It is a schematic diagram of the transmission line display in the conventional direction adjustment screen. It is a schematic diagram of a transmission path / failure area display (display of a Fresnel zone) in three dimensions according to an embodiment of the present invention. It is a schematic diagram of a transmission path / failure area display (graphic and annotation display) in three dimensions according to another embodiment of the present invention. It is a schematic diagram of the afterimage display example of the transmission path / failure area of another embodiment of the present invention. It is a figure which shows an example of the screen which displayed the candidate of several receiving points with respect to one transmission point by planar display. It is a figure which shows an example of the screen which displayed the candidate of several receiving points with respect to one transmission point by a three-dimensional display. It is a figure which shows an example of the screen which displays the information using a two-dimensional map. It is a figure which shows an example of the screen which displays the information using a 3D map and the information using a 2D map on the same screen. It is a figure which shows an example of the screen which displays the information using a three-dimensional map and the information using a two-dimensional map with a different magnitude | size on the same screen.

Embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 shows an example of a system of a receiving base station system according to the present invention (a system in which a wireless transmission system according to the present invention is applied to a remote control monitoring system using wireless transmission). In FIG. 1, the material is transmitted from the transmission point A (11) and the transmission point B (14) to the head office (13). The material from the transmission point A (11) at a long distance from the head office is wirelessly transmitted to the head office (13) through the base station (12).

  Here, for example, the system of this example is applied to a broadcasting system, and a transmission point A (11) and a transmission point B (14) are FPU transmitters mounted on a moving body such as a relay car or a helicopter, and a reception point. The base station (12) is equipped with an FPU receiver (for example, a rotating receiving antenna device (12-1)), installed on the top of a mountain or on a building, etc., and operated unattended. Remote control and monitoring (remote control monitoring) is performed on the A (11), the transmission point B (14), and the base station (12) by the operation of the user (person) or automatically.

  Usually, the communication line between the head office (13) and the base station (12) is fixed and in a good communication state, while the wireless communication between the transmission point A (11) and the base station (12). The state of fluctuates depending on the topography between them. For this reason, in the head office (13), information on the state of wireless communication between the transmission point A (11) and the base station (12) is displayed together with a map on the screen of the terminal (for example, the operation terminal (13-10)). Then, the operation from the user is accepted, the position information of the transmission point A (11) is acquired, and the antenna of the base station (13) (for example, the rotation receiving antenna device (12-1)) based on these Rotation etc. are controlled.

An example of operation in the receiving base station system of this example will be described.
First, the transmission unit (11-1) at the transmission point A (11) converts the material into a high-frequency signal of about 333 MHz or more that can be wirelessly transmitted, and transmits radio waves from the antenna (11-2). Here, the transmission unit (11-1) encodes an SDI (Serial Digital Interface) signal and converts it into a TS (Transport Stream) signal, which is a frame format of a fixed-length packet format used for transmission by the FPU, and outputs an orthogonal frequency. Digital modulation is performed using a division multiplexing (Orthogonal Division Multiplexing: hereinafter referred to as OFDM) modulation method or a phase amplitude modulation (hereinafter referred to as QAM) method, and the resulting signal is converted into an intermediate frequency signal to a high frequency of about 333 MHz or more. The frequency is converted and transmitted to the antenna (11-2).

  The transmitted high frequency of about 333 MHz or higher is received by the rotary receiving antenna device (12-1) in the base station (12) and sent to the receiving unit (12-2). Here, the receiving unit (12-2) frequency-converts a signal in a high frequency band of about 333 MHz or higher into an intermediate frequency signal, demodulates it into a TS signal, and decodes it into an SDI signal. However, in the receiving unit (12-2) in the base station (12), the TS signal is converted into a TS signal, and the TS signal is sent to the transmitting unit (12-3), digitally modulated, frequency-converted, and fixed antenna (12- 6) to a high frequency of about 3 GHz or more. A high frequency of about 3 GHz or more transmitted from the base station (12) is received by the fixed antenna (13-1) of the head office (13), frequency-converted by the receiving unit (13-2), demodulated into a TS signal, and decoded. It is decoded into an SDI signal by (13-5) and sent to the main line.

  Further, the material from the transmission point B (14) at a short distance from the head office (13) is transmitted from the antenna (14-2) through the transmission section (14-1), and is directly transmitted to the rotary reception antenna device of the head office (13). Received by (13-3), frequency-converted by the receiving unit (13-4), demodulated to a TS signal, decoded to an SDI signal by the decoding unit (13-5), and sent to the main line.

  The rotating receiving antenna device (12-1) is a combination of a receiving antenna and a rotating gantry that can be rotated by remote control from the head office (13). The control monitoring method is as follows. The control packet transmitted to the network from the operation terminal (13-10) in the head office (13) is received by the control terminal (13-9) and converted into a serial signal. Here, a plurality of operation terminals and a plurality of control terminals can be connected to the network, and transmission / reception can be performed by specifying a transmission / reception partner by each device ID. The serial signal is further modulated, for example, into an analog signal in the modulation / demodulation unit (13-8) and transmitted to the base station (12). The analog signal is received by the modem unit (12-5) in the base station (12), demodulated into a serial signal, and then transmitted to the controlled terminal station (12-4). The controlled terminal station (12-4) decodes the control signal and controls the rotation receiving antenna device (12-1).

  Monitoring information such as an angle in the rotation receiving antenna device (12-1) is sent as a monitoring signal to the controlled terminal station (12-4). The controlled terminal station (12-4) transmits the information as a serial signal to the modulation / demodulation unit (12-5), and the modulation / demodulation unit (12-5) modulates, for example, an analog signal and transmits it to the head office (13). To do. The signal received by the modem (13-8) in the head office (13) is demodulated into a serial signal and transmitted to the control terminal (13-9). The control terminal station (13-9) decodes the received serial signal and transmits a monitoring packet to the network. The operation terminal (13-10) receives the monitoring packet and displays it on the terminal as information.

  As described above, it is possible to control and monitor the rotating reception antenna device (12-1) in the base station (12). In this reception base station system, the receiving unit (12) installed in the base station (12) 12-2) and the reception / transmission level in the transmission unit (12-3), transmission / reception channel (frequency band), modulation method, transmission output, decoding method, for example, signal switch contact selection, signal multiplexing / demultiplexing device signal Input / output selection is the same as that for the rotation receiving antenna apparatus (12-1), such as the operation terminal (13-10) -control terminal station (13-9) -controlled terminal station (12-4) -control apparatus. Control and monitoring can be performed by a series of signal transmissions (for example, the reception unit (12-2) and the transmission unit (12-3)). When transmitting directly to the head office (13) for material transmission from the transmission point B (14), the operation terminal (13-10) -control terminal station (13-9) -control device (for example, a rotation receiving antenna) Using the signal transmission path of the device (13-3) and the receiving unit (13-4), the rotating receiving antenna device (13-3) and the receiving unit (13-4) existing in the head office (13) Control monitoring is possible for the device.

  In this system, TMCC (Transmission) including transmission parameters such as reception frequency and modulation method in the receiving units (12-2) and (13-4) is provided as more detailed information for adjusting the direction of the receiving antenna. and Multiplexing Configuration Control information, reception level, margin (Margin Degree), BER (Bit Error Rate), MER (Modulation Error Ratio), delay profile, constellation and other data are superimposed on the TS signal to superimpose the head office (13). ), Separated by the information generation unit (13-6), edited by the information editing unit (13-7), and displayed on the operation terminal (13-10).

  FIG. 3 shows a schematic diagram of three-dimensional transmission path / failure area display (Fresnel zone) according to an embodiment of the present invention. In the figure, map display frame (corresponding to 301: 201), receiving point (corresponding to 302: 202), transmitting point (corresponding to 303: 203), square line (corresponding to 304: 204), main wave propagation An area (305), an obstacle area (306), angle reference lines (307) and (308), and an orientation index (309) are shown.

  First, the map in this embodiment is three-dimensional. For example, a display method in which altitude information is added to a map and the viewpoint is changed can be utilized by a conventional three-dimensional technique. Therefore, changes in the vertical direction can also be confirmed on the map. When using the means with these characteristics and displaying the transmission path connecting the transmission point (303) and the reception point (302) on the map, terrain factors are taken into account by characterizing the area that becomes an obstacle in transmission. Information can be provided in an integrated manner. For example, in FIG. 3, the first Fresnel zone of transmission, which is the radio wave propagation main area, is displayed, and the range of failure is watched. According to this, compared with the conventional profile display obtained by cutting out one transmission line, it is possible to examine the current transmission line in which peripheral terrain information is grasped. In other words, the user pays attention to both the altitude and surrounding topographical elements with only one screen of information about the propagation loss related to the transmission gain in the current transmission path, the loss loss due to the failure, and the transmission movement / relocation cost for avoiding the failure. Can be compared and judged.

  Here, the propagation loss of a high frequency of about 333 MHz or more can be calculated from the transmission output, each antenna power gain (which can be derived from the transmission frequency and the antenna diameter), and the distance. Of course, it is possible to express numerical values such as color (for example, existing in the form of an expected electric field). In the same figure, at the same time, it is supported to determine whether transmission is possible by radio wave diffraction at the point of failure. The diffraction loss when the line of sight on the transmission line is blocked can be approximated using diffraction parameters derived from the reception point altitude, transmission point altitude, obstacle point altitude, and transmission radio wave wavelength (non-patent document). 1).

  These are digitally modulated signals that have been increasingly used in recent years, and in transmission at a high frequency of about 333 MHz or higher, in this embodiment, the attenuation after passing through the fault area is displayed with the thickness of the transmission line. ing. In other words, diffraction loss corresponding to high-frequency transmission of about 333 MHz or more of digital modulation can be confirmed at the same time as the transmission line, and whether transmission is possible including topographic elements is determined based on the cost of moving to another point. Can be considered relatively.

Here, in this example, the display content of FIG. 3 is displayed on the screen of the operation terminal (13-10) of the head office (13), and the operation terminal (13-10) receives an operation from the user. The transmission point (303) indicates the position of the transmission point A (11), and the reception point (302) indicates the position of the base station (12).
For the rotating receiving antenna device (12-1) at the receiving point (302), the angle reference line (307) indicates a horizontal (H) 0 ° position, and the angle reference line (308) is a vertical (height V) 0 ° position. Shows. In this example, H0 ° indicates north, and changes from north to east, south, and west as it becomes positive.
The failure area (306) indicates that the wireless transmission path is shielded by a mountain or the like, and a portion having a failure is painted in a predetermined color.

The radio wave propagation main region (in this example, the first Fresnel zone) (305) and the square line (304) (for example, line thickness, color, type, etc.) , Based on one or more of the influence (for example, diffraction) of the obstacle region (306). For the square line (304), for example, the line may be erased where radio waves do not pass.
The orientation index (309) can be turned by an operation, and the displayed map is rotated accordingly.
Note that only a part of the various information shown in FIG. 3 may be displayed, or other information not shown in this example may be further displayed.

FIG. 4 shows a schematic diagram of three-dimensional transmission path / failure area display (graphics, annotations) according to another embodiment of the present invention. According to FIG. 4, it is also possible to display a graphic (401) characterizing a failure point and a character string (402) as an annotation supplement. Without being limited thereto, there are various methods for displaying faults, such as color, line segment thickness, line type, figure supplement, and annotation supplement.
Here, in this example, the display content of FIG. 4 is displayed on the screen of the operation terminal (13-10) of the head office (13), and the operation terminal (13-10) accepts an operation from the user.

Next, FIG. 5 shows an implementation extension example according to the present invention. These are a trajectory range (501) of the transmission path, an afterimage (502), an obstacle range (503) in the afterimage, and an altitude selection button (504).
FIG. 5 shows a schematic diagram of an afterimage display example of a transmission path / fault region according to another embodiment of the present invention. FIG. 5 is an example in which afterimages of drawing displayed at each point remain when the transmission path is moved within the trajectory range. This movement of the transmission path is performed when the antenna angle display line (for example, the direction of the antenna) is changed by the monitoring information in the control monitoring (when the antenna is actually moved), or at the transmission side (303) or reception on the user side. The present invention can be applied to a case where the transmission path designated by the point (302) and explicitly displayed is moved by the operating means.

  Here, for the movement of the transmission path by the operation means, for example, a method using a transmission point using a mouse of a computer terminal, an in-screen drag operation of a reception point, etc. as a trigger can be considered. As can be seen from FIG. 5, the failure range when the transmission point or the reception point is moved can be easily understood. Also, by adding a function that allows the user to select a transmission path that maintains the current fixed altitude or a transmission path that has moved on the ground surface by using the altitude selection button (504), a relay vehicle or helicopter on the transmission side is added. It is possible to confirm a profile obtained by cutting the transmission path at each point by the moving means such as.

Here, in this example, the display content of FIG. 5 is displayed on the screen of the operation terminal (13-10) of the head office (13), and the operation terminal (13-10) receives an operation from the user.
Further, the afterimage of FIG. 5 is obtained, for example, by leaving the display content desired to be left as it is or changing the color or the like when redrawing. The example of FIG. 5 is an afterimage when the position of the transmission point (303) changes (actually changes or changes by virtual operation), and the trajectory range (501) of the transmission path forms a triangle.

As for the “fixed altitude” of the altitude selection button (504), helicopters moving in the sky move at the same altitude in this example. However, as another example, the altitude selection button (504) changes depending on GPS (Global Positioning System). The altitude may be detected and the information displayed. The “ground surface” of the altitude selection button (504) represents a relay vehicle moving on the ground surface.
An obstacle range (503) in the afterimage represents an afterimage of the obstacle.

In FIG. 6, as an example of display content displayed on the screen of the operation terminal (13-10) of the head office (13), a plurality of reception point candidates (no candidates exist) for one transmission point in a planar display. Or a single case may be displayed). The operation terminal (13-10) accepts an operation from the user.
Specifically, a planar (two-dimensional) map is displayed in the map display frame (601), and the position of one transmission point (602) is indicated by a predetermined figure and exists in the vicinity thereof. The respective positions of the reception points (603), (604), and (605) are displayed in a predetermined figure. In this example, the transmission point (602) indicates the position of the transmission point A (11), and the reception points (603) to (605) are base stations (for example, three different base stations including the base station (12)). Indicates the position.

The user who operates the operation terminal (13-10) can select and designate any one reception point from among the displayed candidates for the plurality of reception points (603) to (605). Upon receiving this designation, the operation terminal (13-10) displays various types of information using a three-dimensional map as shown in FIG. 3 and the like for the transmission point (602) and the designated reception point.
Further, the operation terminal (13-10) can arbitrarily switch between the flat display as shown in FIG. 6 and the stereoscopic display as shown in FIG.

  The user can improve the usability of the plane display of the peripheral information of the transmission point as shown in FIG. 6 and the switching between the plane display and the stereoscopic display. For example, it is possible to search for an alternative reception point (in this example, a base station) according to the transmission status. Further, for example, the operation terminal (13-10) detects a transmission state of a reception point (other reception point) other than the currently displayed reception point (for example, one reception point), and becomes an alternative candidate. One or more receiving points can be displayed.

In FIG. 7, as an example of display content displayed on the screen of the operation terminal (13-10) of the head office (13), a plurality of reception point candidates (no candidates exist) for one transmission point in a stereoscopic display. Or a single case may be displayed). The operation terminal (13-10) accepts an operation from the user.
Specifically, a three-dimensional (three-dimensional) map is displayed in the map display frame (701), and the position of one transmission point (702) is indicated by a predetermined figure and exists in the vicinity thereof. The respective positions of the reception points (703), (704), and (705) are displayed in a predetermined figure. In this example, the transmission point (702) indicates the position of the transmission point A (11), and the reception points (703) to (705) are base stations (for example, three different base stations including the base station (12)). Indicates the position.

  In addition, square lines (706), (707), and (708) connecting the transmission point (702) and the reception points (703), (704), and (705) are displayed. ), (707), and (708), the line thickness, color, line type, and the like are changed in accordance with the presence or absence of a failure. In this example, a solid line (708) indicating that there is no failure and the state of wireless transmission is good is displayed as a thick line, and a solid line (707) where there is a failure but the state of wireless transmission is better than a predetermined condition. Is displayed as a normal line, and a faulty line (706) is displayed as a dotted line, which is faulty and the wireless transmission status is less than a predetermined condition.

  The three-dimensional display of the peripheral information of the transmission point as shown in FIG. 7 can improve the usability for the user. For example, it is possible to search for an alternative reception point (in this example, a base station) according to the transmission status. Further, for example, the operation terminal (13-10) detects a transmission state of a reception point (other reception point) other than the currently displayed reception point (for example, one reception point), and becomes an alternative candidate. One or more receiving points can be displayed.

  Next, referring to FIG. 8 and FIG. 9, on the screen of the operation terminal (13-10) of the head office (13), information using the 3D map and information using the 2D map are displayed on the same screen. An example is shown. The operation terminal (13-10) accepts an operation from the user.

FIG. 8 shows an example of a screen that displays information using a two-dimensional map.
Specifically, the map display frame (801) includes a reception level meter (802), a reception level value (803), a rotating antenna current angle (804), rotating antenna monitoring information (805), and receiving means monitoring information (806). ), Transmission point information (807), rotating antenna control button (808), two-dimensional map screen (809), three-dimensional map display button (813), information acquisition button (814) from the three-dimensional map. .
In addition, on the two-dimensional map screen (809), for example, similarly to the information of the map display frame (201) shown in FIG. 2, the position (810) of the reception point (base station in this example), the position of the transmission point (811), the antenna angle direction (812) which is a square line is displayed.

FIG. 9 shows an example of a screen that displays information using a three-dimensional map and information using a two-dimensional map on the same screen (one screen).
Specifically, various types of information as shown in FIG. 8 are displayed in the map display frame (801), and a window (901) of a three-dimensional map screen is displayed. As a result, for example, information (901) using a three-dimensional map and information (809) using a two-dimensional map are displayed on the same screen for the same set of transmission points and reception points.

  In this example, the display in FIG. 9 is performed in response to the three-dimensional map display button (813) being pressed by a user operation. Specifically, when the 3D map display button (813) is pressed, the operation terminal (13-10) transmits transmission point information (for example, latitude, longitude, altitude) to a predetermined program (3D map program). ) And reception point information (for example, latitude, longitude, altitude) are sent, and information on the corresponding transmission path is drawn based on the received information. In addition, in order to draw a transmission path on a map, at least information on the latitude, longitude, and altitude of a transmission point and a reception point is required, and other information may be acquired and considered. .

For example, the user can set the transmission path (position of transmission and reception points) using a two-dimensional map and then check the periphery by looking at the three-dimensional map synchronized with the transmission path.
In addition, the user moves the transmission path (position of transmission and reception points) on the three-dimensional map by the operation, and then presses the information acquisition button (814) from the three-dimensional map to transmit on the three-dimensional map. It is also possible to draw information synchronized with the road information on the two-dimensional map. In the operation terminal (13-10), when the information acquisition button (814) from the 3D map is pressed, the information of the window (901) of the 3D map screen is reflected on the 2D map screen (809).

Here, the 3D map display button (813) and the information acquisition button (814) from the 3D map may be on the 2D map screen (809) as another configuration example, or the 3D map screen. (901). As an example, a 3D map display button (813) for calling a 3D map on the 2D map is provided, and the 3D map is called from the 3D map for calling or reflecting the 2D map on the 3D map. A display method in which an information acquisition button (814) is provided may be used.
Further, for example, a configuration may be adopted in which the display of the three-dimensional stereoscopic map and the display of the two-dimensional planar map can be switched to each other by a user operation.
The two-dimensional and three-dimensional displays on the same screen as shown with reference to FIGS. 8 and 9 can improve the usability of the user.

  In FIG. 10, as an example of display contents displayed on the screen of the operation terminal (13-10) of the head office (13), information using a three-dimensional map and a two-dimensional map are used on the same screen (one screen). A screen for simultaneously displaying information in different sizes is shown. The operation terminal (13-10) accepts an operation from the user.

Specifically, in the state of FIG. 10A, a two-dimensional map screen (1002a), a three-dimensional map screen (1003a), and a switching button (1004) are displayed in the map display frame (1001). The display area of the three-dimensional map screen (1002a) is larger than the display area of the three-dimensional map screen (1003a).
In this state, when the switch button (1004) is pressed by a user operation, the display content is switched to the state shown in FIG. 10B on the operation terminal (13-10).

In the state of FIG. 10B, the map display frame (1001) is displayed with a two-dimensional map screen (1002b), a three-dimensional map screen (1003b), and a switch button (1004), and the three-dimensional map screen (1003b ) Is larger than the display area of the two-dimensional map screen (1002b).
In this state, when the switch button (1004) is pressed by a user operation, the display content is switched to the state shown in FIG. 10A on the operation terminal (13-10).
As shown in FIG. 10, the display for switching the size relationship between the two-dimensional map screen and the three-dimensional map screen displayed simultaneously on the same screen can improve the usability of the user.

(Summary of this example)
As described above, in this example, when displaying information about the prospect from the transmission point to the reception point on, for example, an FPU remote controller, what is conventionally displayed using a two-dimensional map, Display using a three-dimensional map, and display the transmission point, reception point, square line, radio wave propagation area, obstacle area, angle reference line, orientation index, etc. It is possible for the user to easily determine the prospects. In addition, when the user moves the direction line (transmission path) with a mouse drag, etc., the afterimage such as the direction line is displayed to check the faulty area when the transmission point or the reception point is moved. It can be made easier for the user.

In this example, for example, each position is detected from GPS information or latitude / longitude information of the map and displayed on the map.
Moreover, in this example, although the example of a structure which performs display and operation of various information with the operation terminal (13-10) of a head office (13) was shown, as another structure example, one or both of a display and operation, A configuration performed by another device such as a transmission point (for example, FPU) may be used.

Here, the configuration of the system and apparatus according to the present invention is not necessarily limited to the configuration described above, and various configurations may be used. The present invention can also be provided as, for example, a method or method for executing the processing according to the present invention, a program for realizing such a method or method, or a recording medium for recording the program. It is also possible to provide various systems and devices.
The application field of the present invention is not necessarily limited to the above-described fields, and the present invention can be applied to various fields.
In addition, as various processes performed in the system and apparatus according to the present invention, for example, the processor executes a control program stored in a ROM (Read Only Memory) in hardware resources including a processor and a memory. A controlled configuration may be used, and for example, each functional unit for executing the processing may be configured as an independent hardware circuit.
The present invention can also be understood as a computer-readable recording medium such as a floppy (registered trademark) disk or a CD (Compact Disc) -ROM storing the control program, and the program (itself). The processing according to the present invention can be performed by inputting the program from the recording medium to the computer and causing the processor to execute the program.

11: transmission point A, 11-1: transmission unit, 11-2: antenna,
12: base station, 12-1: rotating reception antenna device, 12-2: reception unit, 12-3: transmission unit, 12-4: controlled terminal station, 12-5: modulation / demodulation unit, 12-6: fixed antenna ,
13: head office, 13-1: fixed antenna, 13-2: receiving unit, 13-3: rotating receiving antenna device, 13-4: receiving unit, 13-5: decoding unit, 13-6: information generating unit, 13 -7: Information editing section, 13-8: Modulation / demodulation section, 13-9: Control terminal station, 13-10: Operation terminal,
14: transmission point B, 14-1: transmission unit, 14-2: antenna,
201, 301: Map display frame, 202, 302: Reception point, 203, 303: Transmission point, 204, 304: Direction adjustment line (square line) indicating antenna angle, 205: Antenna angle information, 206: Profile information,
305: Radio wave propagation main area, 306: Obstacle area, 307, 308: Angle reference line, 309: Direction index,
401: A figure characterizing a failure point, 402: A character string as an annotation supplement,
501: Transmission path trajectory range, 502: Afterimage, 503: Fault range in the afterimage, 504: Altitude selection button,
601, 701, 801, 1001: Map display frame, 602, 702: Transmission point, 603, 604, 605, 703, 704, 705: Reception point, 706, 707, 708: Square line,
802: Reception level meter, 803: Reception level value, 804: Rotating antenna current angle, 805: Rotating antenna monitoring information, 806: Reception means monitoring information, 807: Transmission point information, 808: Rotating antenna control button, 809: 2D map screen, 810: position of reception point, 811: position of transmission point, 812: antenna angle direction which is a square line, 813: 3D map display button, 814: information acquisition button from 3D map,
901: 3D map window,
1002a, 1002b: two-dimensional map screen, 1003a, 1003b: three-dimensional map screen, 1004: switching button,

Claims (5)

In a wireless transmission system comprising a moving transmitting device, a receiving device that receives radio waves transmitted from the transmitting device, and a display unit,
The display unit displays a line connecting the two points on the three-dimensional map including the positions of the two points of the transmission device and the reception device, and information on a failure in wireless transmission between the two points.
A wireless transmission system characterized by that. The wireless transmission system according to claim 1,
The display unit displays Fresnel zone information related to wireless transmission between the two points on the three-dimensional map.
A wireless transmission system characterized by that. In the radio transmission system according to claim 1 or 2,
When the line connecting the two points changes, the display unit continues to display all or a predetermined part of the information displayed on the three-dimensional map as an afterimage,
A wireless transmission system characterized by that. The wireless transmission system according to any one of claims 1 to 3,
The display unit has a function of switching between display using a two-dimensional map and display using a three-dimensional map,
The wireless transmission system includes a switching instruction unit that gives an instruction to switch display using a two-dimensional map and display using a three-dimensional map to the display unit.
A wireless transmission system characterized by that. The wireless transmission system according to any one of claims 1 to 4,
The display unit has a function of performing display using a two-dimensional map and display using a three-dimensional map on one screen.
A wireless transmission system characterized by that.