JP6208726B2 - Radio wave propagation measuring device and antenna correction value setting method thereof - Google Patents

Description

  The present invention relates to a radio wave propagation measuring apparatus that measures a radio wave propagation state of a base station of a mobile communication system.

  In a mobile communication system such as a mobile phone, a large number of base stations are installed in a service providing area. The base stations are installed so that the ranges of the output radio waves are overlapped with each other between adjacent base stations, so as to eliminate the places where the radio waves of the base stations do not reach within the service providing area.

  In such a mobile communication system, measuring the propagation state of radio waves from a base station at an arbitrary point in the service providing area is important for maintenance of the base station and management of the service providing area.

  Patent Document 1 proposes an apparatus for measuring a propagation state of a radio wave from a base station in a W-CDMA (Wideband-Code Division Multiple Access) type mobile communication system.

  Furthermore, there is a radio wave propagation measuring apparatus configured to be able to measure not only W-CDMA but also LTE (Long Term Evolution) radio waves.

  In such a radio wave propagation measuring device, the antenna is changed according to the frequency band of the radio wave to be measured, or when measuring radio waves in a plurality of frequency bands, an antenna corresponding to each frequency band is connected. .

  In addition, when performing measurements on a vehicle, a pedestal is attached to the antenna, and the pedestal is connected to a radio wave propagation measuring device via a cable.

  In addition, a divider is used when the outputs of two antennas are combined and input to the radio wave propagation measurement apparatus, or when the output of one antenna is divided and input to the radio wave propagation measurement apparatus.

  In this way, when an antenna, pedestal, divider, or cable is connected to a radio wave propagation measurement device, measurement is performed according to the antenna gain or transmission loss of the pedestal, divider, cable, etc. connected between the antenna and the radio wave propagation measurement device. The data must be corrected.

  Therefore, on the radio wave propagation measurement device side, a correction value corresponding to a combination of an antenna that can be connected and a pedestal or divider that can be connected to the antenna is prepared. Had to choose.

JP 2002-280974 A

  However, in such a radio wave propagation measuring device, correction values must be prepared for all forms that can be connected to the antenna and devices that can be connected, and when a new antenna is added, the antenna can be connected to the antenna. All correction values of the form must be prepared and stored in the radio wave propagation measuring device.

  In addition, when there are a large number of connectable forms, it is difficult to know which one to select when the user selects, and an incorrect antenna correction value is set due to an antenna connection form and a selection error of a connected device. .

  Therefore, an object of the present invention is to provide a radio wave propagation measuring apparatus that can easily select an antenna connection form and a device to be connected and reduce erroneous setting of an antenna correction value.

  The radio wave propagation measuring apparatus of the present invention is a radio wave propagation measuring apparatus that is connected to one or more antennas and that measures the propagation state of a radio signal from a base station, and that accepts an operation input and a display unit that displays an image. An input unit; and a control unit configured to display a setting image on the display unit to perform various settings, and the control unit is connected to the display unit and a connection form of each of the antennas. Devices are individually displayed in a list, and the total antenna correction value is calculated by adding the antenna connection value selected by the operation input to the input unit and the antenna correction value corresponding to each of the connected devices. To do.

  With this configuration, the antenna correction value is calculated by individually selecting the antenna connection form and the device connected to the antenna. This makes it easier to select the antenna connection form and the connected device compared to selecting from a list of all combinations of antenna connection forms and connectable devices, and reduces incorrect settings for antenna correction values. Can be made.

  In the radio wave propagation measuring apparatus according to the present invention, the control unit sets a correction value for the antenna correction value by an operation input to the input unit.

  With this configuration, the antenna correction value is corrected by an operation input to the input unit. For this reason, the antenna correction value can be set even when an antenna or a device not included in the list of antenna connection forms or the list of connectable devices is connected.

  In the radio wave propagation measuring apparatus of the present invention, the control unit can individually set the antenna correction value for each preset frequency band.

  With this configuration, the antenna correction value is set for each preset frequency band. For this reason, even when simultaneously measuring a plurality of frequency bands, an antenna correction value can be set for each frequency band.

  In the radio wave propagation measuring apparatus according to the present invention, the control unit causes the display unit to display an antenna correction value for each frequency band by an operation input to the input unit.

  With this configuration, an antenna correction value for each frequency band is displayed by an operation input to the input unit. For this reason, the antenna correction value for each frequency band can be easily confirmed, and erroneous setting of the antenna correction value can be reduced.

  Moreover, the antenna correction value setting method of the present invention includes a display unit that displays an image and an input unit that receives an operation input, and is connected to one or more antennas to determine a propagation state of a radio signal from a base station. An antenna correction value setting method for a radio wave propagation measuring device to be measured, the step of causing the display unit to individually display a list of connection modes of the antennas and a device connected to the antennas, and the input unit. And a step of selecting the connection form of each of the antennas and a device connected to the antenna by an operation input to the antenna, and adding an antenna correction value corresponding to each of the selected connection form of the antenna and the connected device And calculating a total antenna correction value.

  With this configuration, the antenna correction value is calculated by individually selecting the antenna connection form and the device connected to the antenna. This makes it easier to select the antenna connection form and the connected device compared to selecting from a list of all combinations of antenna connection forms and connectable devices, and reduces incorrect settings for antenna correction values. Can be made.

  The present invention can provide a radio wave propagation measuring device that facilitates selection of antenna connection forms and devices to be connected, and can reduce erroneous setting of antenna correction values.

FIG. 1 is a block diagram of a radio wave propagation measuring apparatus according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of a screen for setting the antenna connection mode of the radio wave propagation measuring apparatus according to the embodiment of the present invention. FIG. 3 is a diagram showing an example of an antenna correction value confirmation screen of the radio wave propagation measuring apparatus according to the embodiment of the present invention.

  Hereinafter, a radio wave propagation measuring apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

  In FIG. 1, a radio wave propagation measuring apparatus 1 according to an embodiment of the present invention includes a radio signal processing unit 10, a radio signal measuring unit 11, a user interface unit 12, and a control unit 13. .

  The radio signal processing unit 10 outputs the radio signal received from the base station 2 via the antenna 16 to the radio signal measurement unit 11 by performing amplification or frequency conversion.

  The radio signal measurement unit 11 is connected to the radio signal processing unit 10, demodulates and decodes the radio signal output from the radio signal processing unit 10, measures predetermined measurement items, and outputs the measurement results to the control unit 13. It is supposed to be. The control unit 13 stores the measurement result from the radio signal measurement unit 11 in a hard disk or the like in association with time information and the like, and causes the user interface unit 12 to display and output the log as a log according to a user request. It is supposed to be.

  As measurement items, in W-CDMA, RSSI (Received Signal Strength Indicator), RSCP (Received Signal Code Power), Ec / No (Received energy per chip divided by the power density in the band), SIR (Signal to Interference Ratio). )and so on. In LTE, there are RSSI, RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), SIR, and reception timing.

  The radio signal measuring unit 11 is configured to receive a clock signal from a GPS (Global Positioning System) receiving unit 14 or an internal clock 15. The radio signal measuring unit 11 measures the reception timing of the LTE signal based on a PPS (Pulse Per Second: signal with a period of 1 second) from the GPS receiving unit 14 or a clock signal from the internal clock 15. In addition, you may make it input a GPS signal from the outside.

  The user interface unit 12 includes an input unit 121 that receives an operation input from a user, and a display unit 122 that displays a measurement parameter setting screen, a measurement result of the wireless signal measurement unit 11, and the like. The input unit 121 includes a touch pad, a keyboard, a push button, and the like. The display unit 122 is configured by a liquid crystal display device or the like.

  The control unit 13 is configured by a computer unit including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a hard disk device, and an input / output port (not shown).

  The ROM and hard disk device of this computer unit store various control constants, various maps, and the like, as well as programs for causing the computer unit to function as the control unit 13. That is, the computer unit functions as the control unit 13 when the CPU executes a program stored in the ROM and the hard disk device. The hard disk device may be a CF (Compact Flash) card using a flash memory.

  A wireless signal measurement unit 11 and a user interface unit 12 are connected to the input / output port of the control unit 13 so that the control unit 13 and each unit can transmit and receive signals.

  In the present embodiment, the wireless signal measurement unit 11 is configured by a processor such as a DSP (Digital Signal Processor) programmed to execute each process. The wireless signal processing unit 10 is configured by a communication module.

  The radio signal processing unit 10 and the radio signal measurement unit 11 may be configured separately for W-CDMA and LTE, for example.

  In such a radio wave propagation measuring apparatus 1, the control unit 13, for example, measures a radio signal having a frequency set by an operation input to the input unit 121 on the setting screen displayed on the display unit 122. Let me do it.

  The control unit 13 causes the input unit 121 to input the center frequency and frequency bandwidth of the wireless signal to be measured, the number of signals to be measured, and the like on the setting screen displayed on the display unit 122. A plurality of center frequencies of radio signals to be measured can be set.

  The control unit 13 notifies the wireless signal measurement unit 11 of the setting information input from the input unit 121 and causes the wireless signal measurement to be performed.

  When the setting information is notified from the control unit 13, the wireless signal measuring unit 11 notifies the wireless signal processing unit 10 of the notified center frequency and frequency bandwidth, and transmits the wireless signal of the center frequency and frequency bandwidth. Receive.

  When the radio signal processing unit 10 is notified of the center frequency and the frequency bandwidth from the radio signal measurement unit 11, the radio signal processing unit 10 receives a radio signal having the center frequency and the frequency bandwidth, and performs amplification, frequency conversion, and the like to perform the radio signal measurement unit. 11 is output.

  The radio signal measurement unit 11 demodulates and decodes the radio signal output from the radio signal processing unit 10, measures RSRP, RSSI, RSRQ, SIR, reception timing, and the like, and outputs the measurement result to the control unit 13.

  Based on the measurement result output from the wireless signal measuring unit 11, the control unit 13 creates an image to be displayed on the display unit 122 according to the measurement result display type selected by the operation input of the input unit 121, and displays the display unit 122. To display.

  In the radio wave propagation measuring apparatus 1 of the present embodiment, the antenna 16 can be directly connected to the radio wave propagation measuring apparatus 1 or can be connected to the pedestal and connected by a cable from the pedestal. In addition, a divider can be connected to combine and distribute signals from the antenna 16.

  The radio wave propagation measuring apparatus 1 corrects the measurement data in accordance with the antenna gain and the transmission loss of a pedestal, a cable, a divider or the like connected between the antenna and the radio wave propagation measuring apparatus 1.

  The control unit 13 stores a correction value for each antenna 16, a correction value for each base, and a divider correction value in the hard disk device. The correction value is set for each preset frequency band.

  The control unit 13 causes the display unit 122 to display a screen for setting the connection form of the antenna 16 and the device to be connected, and causes the connection unit of the antenna 16 and the device to be connected to be set by operating the input unit 121. Here, the connection form of the antenna 16 is, for example, a form in which the antenna 16 is directly connected to the radio wave propagation measuring apparatus 1 or a divider, or a radio wave propagation measuring apparatus 1 from the pedestal via a cable by connecting a base to the antenna 16. There is a form to connect to the divider.

  The control unit 13 adds the set correction values of the antenna 16, the pedestal, and the divider for each frequency band described above to obtain an overall correction value.

  The control unit 13 may allow the user to set a correction value for each frequency described above in order to connect an antenna 16 or the like that is not stored in the hard disk device. In this case, the control unit 13 adds the correction value set by the user to the correction value of the set antenna 16 or the like to obtain the entire correction value.

  When a plurality of antennas 16 are set, the control unit 13 sets a correction value for the antenna 16 having a higher priority according to a preset priority, and sets a frequency band that is not included in the correction value for the antenna 16 having a higher priority. Only the correction value is set to the correction value of the antenna 16 having a low priority.

  When a plurality of antennas 16 are set, the control unit 13 may cause the display unit 122 to display a warning that does not guarantee the measurement value if there is a frequency band that overlaps with the correction value of each antenna 16.

  The control unit 13 notifies the wireless signal measurement unit 11 of the calculated overall correction value. The wireless signal measurement unit 11 corrects the measurement result based on the notified correction value and outputs the correction result to the control unit 13.

  FIG. 2 is a diagram illustrating an example of a screen for setting the connection form of the antenna 16. The first antenna selection unit 101 selects and sets the antenna 16 having a high priority. When the first antenna selection unit 101 is selected by operating the input unit 121, the control unit 13 displays a list of antennas 16 and combinations of antennas 16 and pedestals stored in the hard disk device, and by operating the input unit 121. The selected antenna 16 or a combination of the antenna 16 and the pedestal is displayed on the first antenna display unit 102.

  The second antenna selection unit 103 selects and sets the antenna 16 having a low priority. When the second antenna selection unit 103 is selected by operating the input unit 121, the control unit 13 displays a list of antennas 16 and combinations of antennas 16 and pedestals stored in the hard disk device, and by operating the input unit 121. The selected antenna 16 or the combination of the antenna 16 and the pedestal is displayed on the second antenna display unit 104.

  The control unit 13 has a correction value for both the correction value of the antenna 16 selected by the second antenna selection unit 103 and the correction value of the antenna 16 selected by the first antenna selection unit 101 in the same frequency band. In this case, a warning that does not guarantee the measured value is displayed on the display unit 122.

  The divider selection unit 105 selects and sets a divider connected to the antenna 16. When the divider selection unit 105 is selected by the operation of the input unit 121, the control unit 13 displays a list of dividers stored in the hard disk device, and the divider selected by the operation of the input unit 121 is displayed on the divider display unit 106. Display.

  The user correction value input unit 107 directly inputs a correction value for each preset frequency band. The control unit 13 changes and displays the correction value according to the operation of the input unit 121.

  The total correction value confirmation unit 108 displays a total correction value obtained by adding the correction value set by the user to the correction value obtained by the antenna 16, the pedestal, or the divider selected as described above. When the total correction value confirmation unit 108 is selected by the operation of the input unit 121, the control unit 13 selects the correction value of the antenna 16 selected by the first antenna selection unit 101 or the combination of the antenna 16 and the pedestal, and the second antenna. The correction value of the antenna 16 selected by the selection unit 103 or the combination of the antenna 16 and the pedestal, the correction value of the divider selected by the divider selection unit 105, and the correction value set by the user correction value input unit 107 Each frequency band is added and displayed on the total correction value display unit 109 as shown in FIG.

  In FIG. 2, when the determination unit 110 is selected by operating the input unit 121, the control unit 13 selects the correction value of the antenna 16 selected by the first antenna selection unit 101 or the combination of the antenna 16 and the pedestal, and the second value. A correction value of the antenna 16 selected by the antenna selection unit 103 or a combination of the antenna 16 and the pedestal, a correction value of the divider selected by the divider selection unit 105, a correction value set by the user correction value input unit 107, Is added for each frequency band to calculate a total correction value, and the wireless signal measurement unit 11 is notified of the total correction value. The wireless signal measurement unit 11 corrects the measurement result based on the notified correction value and outputs the correction result to the control unit 13.

  Thus, in the above-described embodiment, the display unit 122 causes the first antenna selection unit 101 and the second antenna selection unit 103 to display a list of the connection forms of the antennas 16, and the divider connected to the antenna 16 is the divider selection unit. The control unit 13 includes a list displayed on the list 105 and adds an antenna correction value corresponding to a divider connected to the antenna connection form selected by the operation input to the input unit 121 to calculate a total antenna correction value.

  Accordingly, the antenna correction value is calculated by individually selecting the connection form of the antenna 16 and the divider connected to the antenna 16. This makes it easier to select the connection form of the antenna 16 and the device to be connected than when selecting from a list of all combinations of the connection form of the antenna 16 and connectable devices, and incorrect setting of the antenna correction value. Can be reduced.

  Further, the control unit 13 causes the user correction value input unit 107 to set a correction value for the antenna correction value by an operation input to the input unit 121.

  As a result, the antenna correction value is corrected by an operation input to the input unit 121. For this reason, the antenna correction value can be set even when an antenna 16 or a device not included in the list of connection forms of the antenna 16 or the list of connectable devices is connected.

  Further, the control unit 13 can individually set the antenna correction value for each preset frequency band.

  Thereby, an antenna correction value is set for each preset frequency band. For this reason, even when simultaneously measuring a plurality of frequency bands, an antenna correction value can be set for each frequency band.

  Further, the control unit 13 causes the display unit 122 to display the antenna correction value for each frequency band by the total correction value confirmation unit 108 by an operation input to the input unit 121.

  Thereby, an antenna correction value for each frequency band is displayed by an operation input to the input unit 121. For this reason, the antenna correction value for each frequency band can be easily confirmed, and erroneous setting of the antenna correction value can be reduced.

  While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

DESCRIPTION OF SYMBOLS 1 Radio wave propagation measuring apparatus 2 Base station 10 Radio signal processing part 11 Radio signal measurement part 12 User interface part 13 Control part 14 GPS receiving part 15 Internal clock 16 Antenna 101 1st antenna selection part 102 1st antenna display part 103 2nd antenna Selection unit 104 Second antenna display unit 105 Divider selection unit 106 Divider display unit 107 User correction value input unit 108 Total correction value confirmation unit 110 Determination unit 121 Input unit 122 Display unit

Claims (5)

A radio wave propagation measuring device (1) connected to one or more antennas (16) and measuring a propagation state of a radio signal from a base station (2),
A display unit (122) for displaying an image;
An input unit (121) for receiving an operation input;
A control unit (13) for displaying a setting image on the display unit and performing various settings,
The control unit causes the display unit to individually display a list of connection modes of the antennas and devices connected to the antennas, and to connect the antennas selected by an operation input to the input unit. And a radio wave propagation measuring device for calculating a total antenna correction value by adding antenna correction values corresponding to each of the connected devices. Wherein the control unit, radio wave Propagation measuring device according to claim 1 for setting a correction value for the antenna correction value by an operation input to the input unit. Wherein the control unit, the antenna correction value, wave Propagation measuring device according to claim 2, individually settable for each predetermined frequency band. Wherein the control unit, radio wave Propagation measuring device according to claim 3 for displaying an antenna correction value for each said frequency band on the display unit by operating the input to the input unit. A display unit (122) for displaying an image and an input unit (121) for receiving an operation input are provided. One or more antennas (16) are connected, and the propagation state of a radio signal from the base station (2) is determined. An antenna correction value setting method for a radio wave propagation measuring device (1) to be measured,
A step of individually displaying a list of connection forms of the antennas and devices connected to the antennas on the display unit;
Selecting each connection form of the antenna and a device connected to the antenna by an operation input to the input unit;
An antenna correction value setting method comprising: calculating a total antenna correction value by adding antenna correction values corresponding to the selected connection form of the antenna and each of the connected devices.

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