JP2014107811A - System and method for controlling indoor antenna device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of there being no method for detecting and automatically improving deteriorated quality with periodic monitoring of radio communication quality for a building in which indoor measures have already been taken.SOLUTION: An indoor antenna device control system includes an indoor-installed communication quality measurement device and a control device for controlling an indoor antenna device on the basis of the measurement result of a radio signal by the communication quality measurement device. The communication quality measurement device receives a first radio signal including a radio signal transmitted from the indoor antenna device, to measure the quality of a first radio signal. The control device compares a first measurement result received from the communication quality measurement device and reference information prepared before the measurement of the first radio signal, to decide whether or not to adjust the antenna output of the indoor antenna device.

Description

  The present invention relates to control of an indoor antenna device used in a wireless communication system.

  The wireless communication system grasps a place where the communication quality is deteriorated (sound skipping, low throughput, etc.) by various methods, and improves the communication quality. Several communication quality measurement methods are known.

  For example, by installing a measurement device and GPS in a car, etc., and moving, by associating communication quality data and GPS data, a method for measuring outdoor communication quality, a measurement tool incorporated in a portable terminal, and a measurer A method of measuring communication quality by associating measurement information with the position information and time inputted by the user as a key (see, for example, Patent Document 1), incorporating a measurement tool into a mobile terminal used by a user, There is known a method for measuring communication quality by associating data and position information input by a user with measurement data.

JP 2008-244891A

  In a wireless communication system, countermeasures such as increase / decrease of base stations and change of azimuth and depression angles of antennas are implemented for reasons such as communication quality improvement and trouble transfer. As a result, the quality of wireless communication (wireless signal) may deteriorate indoors around the building where the countermeasure is implemented.

  There is a case where a building whose communication quality is expected to be deteriorated by the countermeasure is extracted using a radio wave propagation simulator, and the communication quality in the building is measured after the countermeasure. However, in practice, there may be a case where the communication quality is not deteriorated in the building, and it can be confirmed that there is no problem in the communication quality by the measurement, but the time and cost for the measurement are wasted.

  On the contrary, the radio wave propagation simulator has shown that there is little influence on the communication quality in a certain building, but actually the indoor communication quality of the building may be lowered. In that case, until there is a report from the user or the measurement of the communication quality due to other reasons, the wireless communication service provider cannot grasp the fact that the communication quality has deteriorated in the building, and the quality has deteriorated. Will continue to operate the wireless communication service.

  In particular, buildings where antenna devices (including base stations) for improving wireless communication quality are installed indoors are considered to be less affected by outdoor quality improvement measures compared to buildings where measures are not taken. Are often excluded from the scope of quality measurement surveys. Indoor antenna devices may be operated at low power in order to suppress the impact on outdoor communication quality, and indoor indoor communication devices will have poor communication quality despite the presence of antenna devices inside. There is.

  Even if there is a report of quality degradation from the user, in order to carry out the measurement, obtain the permission of the measurement from the building owner or tenant, etc., and adjust the schedule of the building officials who are presenting the work with equipment and personnel It is necessary to perform the measurement, and the measurement cannot be performed immediately.

  In addition, degradation of indoor wireless communication quality is confirmed after analysis of measurement results, and analysis of measurement results includes identifying the causes of quality degradation and considering countermeasures accordingly, It takes time to take measures.

  One aspect of the present invention is a control system for transmitting and receiving radio signals to and from a mobile terminal and controlling an indoor antenna device installed indoors, the communication quality measuring device installed indoors, and the communication And a control device for controlling the indoor antenna device based on the measurement result of the radio signal by the quality measuring device. The communication quality measuring apparatus receives a first radio signal including a radio signal transmitted from the indoor antenna apparatus by an antenna, measures the quality of the received first radio signal, and determines the quality of the first radio signal. The first measurement result is transmitted to the control device. The control device compares the first measurement result received from the communication quality measurement device with reference information prepared before the measurement of the first radio signal, and determines the antenna output of the indoor antenna device. It is determined whether or not to adjust, and the antenna output of the indoor antenna device is controlled according to the determination result.

  According to one aspect of the present invention, it is possible to appropriately control the output of the indoor antenna device.

It is a figure which shows typically the structure of the indoor antenna apparatus in Example 1, and an indoor antenna apparatus control system. It is a figure which shows the example of arrangement | positioning of the indoor antenna apparatus and communication quality measuring apparatus in Example 1. FIG. It is a figure which shows typically the structure of each apparatus of the indoor antenna apparatus in Example 1, and an indoor antenna apparatus control system. It is a figure which shows the example of the measurement result table in Example 1. FIG. 6 is a diagram illustrating an example of a measurement / control setting table in Embodiment 1. FIG. It is a flowchart which shows the processing example of the communication quality measurement in Example 1, and an indoor antenna apparatus output control. It is a figure which shows the example of the determination result table in Example 1. FIG. It is a figure which shows the example of the measurement result table in Example 1. FIG. It is a figure which shows the example of the communication quality measuring apparatus-indoor antenna apparatus corresponding | compatible table in Example 1. FIG. It is a figure which shows the example of the indoor antenna apparatus output management table in Example 1. FIG. It is a flowchart which shows the example of the indoor antenna apparatus output adjustment step in Example 1. FIG. It is a figure which shows the example of the determination result table in Example 1. FIG. 6 is a diagram illustrating an example of a measurement result comparison table before and after output adjustment in Embodiment 1. FIG. It is a flowchart which shows the process example of the communication quality measurement in Example 2, and an indoor antenna apparatus output control. It is a figure which shows the example of the comparison table of the reference | standard measurement result in Example 2, and a regular measurement result. 12 is a flowchart illustrating an example of an indoor antenna output increase step in the second embodiment. It is a figure which shows the example of the comparison table of the reference | standard measurement result in Example 2, and the measurement result after an output change. 10 is a flowchart illustrating an example of an indoor antenna output reduction step in the second embodiment. It is a figure which shows typically the structure of the indoor antenna apparatus in Example 3, and an indoor antenna apparatus control system. It is a figure which shows the example of the determination result table in Example 3. FIG. It is a figure which shows the example of the comparison table of the reference | standard measurement result in Example 3, and a regular measurement result. It is a figure which shows the example of the output change table of the indoor antenna apparatus of the non-measurement floor in Example 3. FIG. 10 is a flowchart illustrating an example of a process for controlling the antenna output of an indoor antenna device on a non-measurement floor in the third embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that this embodiment is merely an example for realizing the present invention, and does not limit the technical scope of the present invention. Unless otherwise specified, the same reference numerals are assigned to common components in the drawings.

  In this embodiment, an indoor countermeasure antenna device (hereinafter also referred to as an indoor antenna device) and a mobile terminal (also referred to as a portable terminal) are used by using a communication quality measurement device that is installed indoors and includes an antenna that receives a radio signal. In the communication with the communication device, the degradation of communication quality due to the change of the interference component due to the external factor and the change of the propagation loss are measured. One or a plurality of indoor antenna devices are connected to the base station.

  The antenna output (output intensity) of the indoor antenna apparatus is controlled according to the quality standard set by the administrator (user) with respect to the measurement result of the communication quality measuring apparatus. Thereby, the antenna output of an indoor antenna apparatus can be controlled appropriately.

  Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of the wireless communication system of the present embodiment. This system includes an indoor countermeasure antenna apparatus (indoor antenna apparatus) 101 and an indoor antenna apparatus control system that controls the indoor antenna apparatus 101. The indoor antenna device control system includes a communication quality measuring device 102, a control device 103, and a remote monitoring device 104.

  In buildings such as stores and facilities where the communication quality between a mobile terminal such as a mobile phone and a base station is low, the indoor antenna device 101 is fixedly arranged on each floor, and the wireless communication quality (radio wave quality) of each floor is fixed. (Also called radio signal quality).

  A communication quality measuring device 102 is installed on the floor where the indoor antenna device 101 is installed, and the communication quality on the floor where the indoor antenna device 101 for indoor wireless communication countermeasures is installed is measured. In this example, the communication quality measuring apparatus 102 is fixedly installed. One indoor antenna device 101 is formed integrally with one base station, or a plurality of indoor antenna devices 101 are connected to one base station via wiring.

  The communication quality measuring device 102 transmits information on the communication quality obtained by the measurement to the control device 103. In the example of FIG. 1, the control device 103 is installed in the same building as the communication quality measuring device 102. The control device 103 controls the output (output radio wave intensity) from the transmission / reception antenna of each indoor antenna device 101 based on the received quality information and a predetermined quality standard. Specifically, the control device 103 instructs each indoor antenna device 101 to adjust the output from the transmission / reception antenna.

  After adjusting the antenna output of the indoor antenna device 101, the control device 103 remeasures the communication quality by the communication quality measuring device 102, and automatically adjusts the antenna output of the indoor antenna device 101 while referring to the quality improvement effect. . The control device 103 transfers the communication quality measurement result and the quality improvement result to the remote monitoring device 104 via the network. The remote monitoring device 104 selects necessary information from the transmitted information and presents it to the administrator.

  In the example of FIG. 1, the remote monitoring device 104 is installed in a remote place away from the control device 103. The remote monitoring device 104 shows the received information to the administrator at the output device. When the quality deterioration is recognized, the control device 103 notifies the administrator of the communication quality reduction by causing the remote monitoring device 104 to notify the administrator of an alarm. The remote monitoring device 104 may be set in the same building as the control device 103, and these functions may be implemented in one device.

  FIG. 2 is an example in which the communication quality measuring devices 201, 202, 203, and 204 are arranged on the floor where the indoor antenna devices 211, 212, 213, and 214 are installed. In the example of FIG. 2, radio waves are incident from four floor surfaces (north wall surface, east wall surface, south wall surface, and west wall surface), and communication quality measuring devices 201, 202, 203, and 204 are arranged in the vicinity of each incident surface. ing. The effective installation location of the communication quality measuring device is in the vicinity of the opening 221 such as a window having the greatest influence from the outside where the communication status changes (in FIG. 2, only a part of the plurality of openings is indicated by reference numeral 221). )

  FIG. 3 is a diagram schematically illustrating the configuration of each device in the system according to the present embodiment. As described above, the indoor antenna device control system includes the communication quality measuring device 102, the control device 103, and the remote monitoring device 104.

  The communication quality measuring device 102 measures a radio signal. In this example, the communication quality measuring device 102 includes a receiving antenna 301, a processing device 302, and a storage device 303. The receiving antenna 301 receives a radio signal. The processing device 302 calculates a necessary value from the signal received by the receiving antenna 301 and stores the calculated value in the storage device 303. Information to be stored will be described later. The communication quality measuring device 102 transmits data (information) obtained from the radio signal received by the receiving antenna 301 and stored in the storage device 303 to the control device 312 via the network.

  The control device 103 includes a processing device 304 and a storage device 305. The control device 103 stores the data (information) received from the communication quality measurement device 102 in the storage device 305. The storage device 305 stores quality standard information in addition to data (information) received from the communication quality measurement device 102. The control device 103 controls the antenna output of the indoor antenna device 101 by comparing the measurement result of the communication quality measuring device 102 with the quality standard.

  The administrator sets quality standards at the input device 315 of the remote monitoring device 104. The input quality standard is stored in the storage device 310 of the remote monitoring device 104. The remote monitoring device 104 transmits information indicating the set quality standard to the control device 103. The control device 103 stores the received quality standard information in the storage device 305.

  The processing devices 302, 304, and 309 include processors and / or integrated circuits that operate according to programs. For example, the processing devices 302, 304, and 309 include a memory that stores a program, and the processor operates according to the program. Some functions may be realized by a dedicated integrated circuit and some functions may be realized by a processor.

  The storage devices 303, 305, and 310 include non-volatile and / or volatile storage media and store necessary information. In the following, the information stored in the storage devices 303, 305, and 310 is mainly represented by a table structure, but the information used in this embodiment and other embodiments is represented by any data structure. May be.

  The processing device 304 of the control device 103 compares the measurement result of the communication quality measuring device 102 with the quality standard and determines whether or not to adjust (change) the antenna output of the indoor antenna device 101. Details of the determination method will be described later. When determining that the antenna output of the indoor antenna device 101 is to be adjusted, the processing device 304 transmits the instruction to the indoor antenna device 101.

  The indoor antenna device 101 includes a transmission / reception antenna 306 that transmits / receives a radio signal used for communication with a mobile object, and an output control device 307 that controls a radio signal (radio wave) transmission output of the transmission / reception antenna 306. When instructed to adjust the antenna output from the control device 103, the output control device 307 adjusts the output of the transmission / reception antenna 306 accordingly.

  After the output of the transmission / reception antenna 306 of the indoor antenna device 101 is adjusted, the control device 103 remeasures the communication quality. The processing device 304 of the control device 103 instructs the communication quality measuring device 102 to measure the communication quality. The communication quality measuring apparatus 102 measures the communication quality according to the instruction and transmits the measurement result to the control apparatus 103. The control device 103 repeats the output adjustment of the indoor antenna device 101 and the measurement by the communication quality measuring device 102 as necessary. The control device 103 may not perform remeasurement after the output adjustment.

  The processing device 304 stores each measurement result in the storage device 305 and further transmits it to the remote monitoring device 104. The processing device 309 of the remote monitoring device 104 stores the information received from the control device 103 in the storage device 310. In the display device 308, the processing device 309 presents information such as quality standards, measurement results, and the current setting of the indoor antenna device 101 to the administrator.

  The administrator can confirm the information displayed on the display device 308 and can input necessary instructions and settings using the input device 315. As will be described later, the processing device 309 causes the display device 308 to generate an alarm when the communication quality of the indoor antenna device 101 decreases and a predetermined condition is satisfied, and notifies the administrator of the decrease in communication quality. To do.

  FIG. 4 shows an example of measurement results by the communication quality measuring apparatuses 201, 202, 203, and 204 in FIG. This example is an example of a measurement result by regular measurement, and shows a measurement result of the same period. Measurement results are stored in the measurement result table 400. The control device 103 receives measurement result information from each of the communication quality measurement devices 201, 202, 203, 204 and stores them in the measurement result table 400.

  For example, the control apparatus 103 stores the measurement results at the same time in one measurement result table 400 and stores the measurement results at different times in different measurement result tables 400. The measurement results at all times may be stored in one measurement result table 400. The measurement result table 400 may be prepared for each floor as shown in FIG. 4, or one measurement result table 400 may be prepared for all floors.

  The measurement result table 400 includes a communication quality measuring device column 401, a measurement start date / time column 402, a measurement end date / time column 403, a PSC (Primary Scramble Code) column 404, an RSCP (Received Signal Code Power) column 405, Ec / No (Energy- per-Chip-to-Noise Ratio) column 406 and Io column 407. Io is the total received power density (including signal waves and jamming waves) measured at the antenna connector end.

  The communication quality measuring device column 401 stores an identifier of the communication quality measuring device. The measurement start date / time column 402 and the measurement end date / time column 403 store the start date / time and end date / time of the communication quality measurement, respectively.

  PSC, RSCP, Ec / No, and Io are values used in W-CDMA communication, and will be briefly described below. The PSC column 404 stores a radio wave signal identification code (PSC) measured in communication quality (radio signal quality) measurement. PSC is a code for identifying a cell in wireless communication. Although the indoor antenna apparatus 101 of this example is an indoor antenna apparatus according to W-CDMA, the present invention can be applied to control of the indoor antenna apparatus in wireless communication using another protocol.

  The RSCP column 405 stores the value of the received signal code power [dBm] in each measurement. For example, the RSCP column 405 stores the mid-measurement value during the measurement period. The Ec / No column 406 stores the value of received energy [dBm] per chip divided by the power density in the band in each measurement.

  Ec / No is the value of (RSCP-Io). As described above, the Io column 407 stores the total received power density value (Io) measured at the antenna connector end in each measurement. The stored Io value is, for example, the median value during the measurement period. In this example, the communication quality is represented by Ec / No. The communication quality may be expressed by another value, for example, RSCP.

  Each of the processing devices 302 of the communication quality measuring devices 201, 202, 203, 204 calculates the RSCP and Io of the PSC signal designated by the control device 103 in the signal received by the receiving antenna 301. The processing device 302 stores these values in the storage device 303 after the measurement period, and further transmits them to the control device 103. The processing device 304 of the control device 103 calculates Ec / No from the acquired RSCP and Io.

  The processing device 304 stores the acquired RSCP and Io and the calculated Ec / No in the measurement result table 400 (storage device 305). The processing device 302 of the communication quality measuring device may calculate Ec / No and transmit it to the control device 103, and the control device 103 may store the received three values in the measurement result table 400.

  FIG. 5 shows an example of a measurement / control setting table 500 that stores information that defines the measurement method by the communication quality measurement device 102 and the antenna output control method of the indoor antenna device 101. In this example, all the managed communication quality measuring devices 102 measure the communication quality (wireless signal quality) according to this rule, and the control device 103 controls the radio signal output of the indoor antenna device 101 according to this rule. To do. The example of the measurement / control setting table 500 in FIG. 5 defines regular measurement.

  For example, the control device 103 and each communication quality measurement device 102 have a measurement / control setting table 500. Each communication quality measuring apparatus 102 measures a radio signal according to the rules of this table 500. Alternatively, each communication quality measuring device 102 does not have the measurement / control setting table 500, and the control device 103 instructs each communication quality measuring device 102 to perform measurement according to the rules of the measurement / control setting table 500. Good.

  The measurement / control setting table 500 includes a measurement start time column 501, a measurement time column 502, a measurement cycle column 503, a PSC column 504, a frequency column 505, an alarm threshold column 506, an adjustment threshold column 507, and an adjustment width column 508.

  The measurement start time column 501 defines the start time of regular measurement. The measurement time column 502 defines the length of measurement time for regular measurement. The measurement period column 503 defines the period of periodic measurement. The PSC column 504 defines a PSC value that specifies a radio wave signal (wireless communication signal) to be measured. The frequency column 505 defines the frequency value of the radio signal (wireless communication signal) to be measured. A plurality of frequencies may be measured.

  The alarm threshold value column 506 and the adjustment threshold value column 507 define values to be referred to when the control device 103 determines whether or not the antenna output of the indoor antenna device 101 is adjusted. The alarm threshold value column 506 stores a communication quality threshold value (Ec / No) indicating a criterion for notifying the administrator of a decrease in communication quality without adjusting the antenna output (transmitted radio wave output intensity) of the indoor antenna device 101. As described above, in this example, the communication quality is represented by (Ec / No).

  The adjustment threshold value column 507 stores a threshold value (Ec / No) for determining a communication quality standard for adjusting the antenna output of the indoor antenna device 101. By designating a specific adjustment threshold, the antenna output can be adjusted so as to satisfy the absolute standard required for communication quality.

  The adjustment width column 508 stores a value indicating a change amount (output adjustment width) of the antenna output of the indoor antenna device 101 at one time. The indoor antenna device 101 changes (increases or decreases) the antenna output by an amount indicated by the adjustment width column 508 in accordance with an instruction from the control device 103. In FIG. 5, the unit of the value indicated by the adjustment width column 508 is [dBm].

  The administrator inputs a value stored in the measurement / control setting table 500 using the input device 315 of the remote monitoring device 104. The processing device 309 of the remote monitoring device 104 stores the measurement / control setting table 500 in the storage device 310, and further transfers the setting information to the control device 103.

  The control device 103 stores a measurement / control setting table 500 including information received from the remote monitoring device 104 in the storage device 305. When the communication quality measuring apparatus 102 automatically performs measurement with reference to the information in the measurement / control setting table 500, the control apparatus 103 displays all information in the measurement / control setting table 500 or information necessary for measurement selected therefrom. And transmitted to each communication quality measuring apparatus 102. For example, the values of the measurement start time column 501, the measurement time column 502, the measurement cycle column 503, the PSC column 504, and the frequency column 505 are transmitted. The communication quality measuring device 102 stores the received information in the storage device 303.

  FIG. 6 is a flowchart showing an example of communication quality measurement and antenna output control in the indoor antenna apparatus control system of this example. Hereinafter, an example in which communication quality is measured and antenna output control is performed for each floor will be described.

  Each communication quality measuring device 102 measures the quality of a designated radio signal (radio signal) (S101). As described above, each communication quality measuring apparatus 102 periodically measures the communication quality according to the measurement method defined by the measurement / control setting table 500. The measurement / control setting table 500 is prepared for each floor, for example.

  Each communication quality measuring device 102 transmits the measurement result to the control device 103 when the measurement is completed. The processing device 304 of the control device 103 stores the measurement result acquired from each communication quality measurement device 102 in the measurement result table 400. FIG. 4 shows one periodic measurement performed by the communication quality measuring apparatuses 201 to 204 (all communication quality measuring apparatuses in the same floor in this example) by the method prescribed by the measurement / control setting table 500 shown in FIG. Shows the results.

  In the flowchart of FIG. 6, the processing device 304 executes steps S <b> 102 to S <b> 105 for each of the measurement results (each entry in the measurement result table 400) of the communication quality measurement devices 201 to 204. In the example described below, the processing device 304 executes step S106 for all measurement results (communication quality measurement device 102) indicating that the determination results of steps 102 to S105 proceed to step S106.

  The processing device 304 stores the determination results in steps S102 to S105 and the adjustment result in step S106 (including the case where the antenna output is not changed) in the determination result table 700 illustrated in FIG.

  As shown in FIG. 7, the determination result table 700 includes a communication quality measuring device column 701, a measurement start date / time column 702, a measurement end date / time column 703, a PSC column 704, an RSCP column 705, an Ec / No column 706, an Io column 707, It has a determination result column 708 and a change value column 709. As long as each measurement result in FIG. 4 can be associated with the determination result, the information in the columns 701 to 707 may not be included in the determination result table 700.

  Columns 701 to 707 are the same as columns 401 to 407 in the measurement result table 400 shown in FIG. The determination result column 708 stores a determination result by the control device 103 for each measurement result (entry). The determination result table 700 in FIG. 7 corresponds to the examples illustrated in FIGS. 4 and 5. In the determination result column 708, “alarm” indicates that the administrator is informed of a decrease in quality without adjusting the antenna output, and “no problem” indicates that there is no problem in communication quality (change in the antenna output is unnecessary). It shows that.

  The change value column 709 indicates the change amount of the antenna output of the indoor antenna device 101 that has been changed based on the measurement result. The unit is [dB], which is an integral multiple of the adjustment width (value in column 508). In the example shown in FIG. 7, since the antenna outputs of the indoor antenna devices 211 to 214 are not changed from any measurement result, the values of all entries are “0”.

  Returning to FIG. 6, in step S <b> 102, the processing device 304 acquires the alarm threshold value from the alarm threshold value column 506 of the measurement / control setting table 500, and the value and the Ec / Io (column) of the entry selected from the measurement result table 400. The value at 406). When Ec / Io is smaller than the alarm threshold value (S102: YES), the processing device 304 decides to notify the administrator of the quality deterioration, and inputs “alarm” in the corresponding field of the determination result column 708 ( S103).

  If Ec / Io is greater than or equal to the alarm threshold (S102: NO), the processing device 304 proceeds to step S104. In step S <b> 104, the processing device 304 acquires the adjustment threshold value from the adjustment threshold value column 507 of the measurement / control setting table 500, and compares the value with Ec / Io in the entry selected from the measurement result table 400.

  When the Ec / Io measurement value is equal to or greater than the adjustment threshold (S104: NO), the processing device 304 determines that the antenna output adjustment is not necessary, and inputs “no problem” in the corresponding field of the determination result column 708 (S105). ). When the Ec / Io measurement value is less than the adjustment threshold (S104: YES), the processing device 304 proceeds to step S106.

  The processing device 304 proceeds to step S106 when any entry in the measurement result table 400 satisfies the predetermined condition in steps S102 and S104, and in step S106, all the entries satisfying the predetermined condition in steps S102 and S104 ( The antenna output of the indoor antenna device 101 corresponding to the communication quality measuring device 102) is adjusted (the indoor antenna device 101 may not be changed as a result of the adjustment).

  As shown in FIG. 5, the alarm threshold is smaller than the adjustment threshold. When the Ec / Io measurement value representing the measurement quality is less than the alarm threshold value, it is unlikely that the required quality is satisfied by the antenna output adjustment. For this reason, the control device 103 notifies the administrator of the quality deterioration without adjusting the antenna output.

  When the Ec / Io measurement value is between the alarm threshold value and the adjustment threshold value, the current communication quality does not satisfy the requirement, but the necessary communication quality can be improved by adjusting the antenna output. Therefore, the control device 103 adjusts the antenna output of the indoor antenna device 101. When the Ec / Io measurement value is equal to or greater than the adjustment threshold, the communication quality is within the required range, and antenna output adjustment is not necessary. Thus, more appropriate antenna output control can be realized by using two threshold values. Note that the alarm function for the administrator may be omitted.

  In the example of FIG. 7, since the determination result for all measurement results (entries) is “alarm” or “no problem”, the control device 103 (processing device 304) does not proceed to step S106 but the indoor antenna devices 211 to 211. The radio wave output of 214 is not adjusted. The control device 103 stores the measurement result and the determination result (determination result table 700) on the measurement result in the storage device 305 and transmits it to the remote monitoring device 104.

  The remote monitoring device 104 stores the received measurement result and the measurement result in the storage device 310. When there is a determination result indicating “alarm” in the received determination result, the processing device 309 of the remote monitoring device 104 notifies the administrator of the alarm content via the display device 308.

  For example, in the determination result table 700, the processing device 309 includes information on an entry (entry of the communication quality measuring device 201) whose value in the determination result column 708 is “alarm” and the corresponding indoor antenna devices 211 and 212 (see FIG. 9A). Information) is displayed on the display device 308. Thereby, the administrator can know the information about the indoor antenna device 101 and the floor where the deterioration of the communication quality is large.

  Next, another example of measurement results and antenna output control based on the measurement result examples will be described. In the example described below, the antenna output of the indoor antenna device 101 is changed, that is, step S106 in the flowchart of FIG. 6 is executed.

  A measurement result table 800 in FIG. 8 shows another example of the results of regular measurement. The measurement result table 800 includes columns 801 to 807 having the same items as the measurement result table 400. In the measurement result table 800 of FIG. 8, the measurement value of Ec / Io (column 806) in the measurement result of the communication quality measuring apparatus 201 is between the alarm threshold value and the adjustment threshold value.

  9A and 9B show examples of information to be referred to when the control device 103 adjusts the antenna output of the indoor antenna device 101. FIG. FIG. 9A shows an example of a communication quality measurement device-indoor antenna device correspondence table 900 that associates the communication quality measurement device 102 with the indoor antenna device 101. FIG. 9B shows an example of the indoor antenna device output value management table 950 that manages the antenna output values of the indoor antenna device 101.

  The remote monitoring device 104 also has such information. The examples of FIGS. 9A and 9B correspond to the example of the floor shown in FIG. For example, one table 900, 950 is prepared for each floor or for all floors.

  The communication quality measuring device-indoor antenna device correspondence table 900 associates the communication quality measuring device 102 with the indoor antenna device 101 whose antenna output is adjusted based on the measurement result. The communication quality measuring device / indoor antenna device correspondence table 900 includes a communication quality measuring device column 901, an indoor antenna device column 902, and a remarks column 903. The communication quality measuring device column 901 and the indoor antenna device column 902 store the identifiers of the communication quality measuring device 102 and the indoor antenna device 101, respectively. The remarks column 903 stores information arbitrarily input by the administrator.

  The example of FIG. 9A shows communication quality measuring apparatuses 201 to 204 and indoor antenna apparatuses 211 to 214 associated therewith. In this example, two indoor antenna apparatuses are associated with each of the communication quality measuring apparatuses 201 to 204. For example, the control device 103 controls the antenna output of the indoor antenna devices 211 and 212 based on the measurement result of the communication quality measuring device 201, and the indoor antenna devices 212 and 213 based on the measurement result of the communication quality measuring device 202. To control the antenna output.

  The indoor antenna device output value management table 950 illustrated in FIG. 9B includes an indoor antenna device column 951, a current value column 952, an upper limit value column 953, and a lower limit value column 954. The indoor antenna device column 951 stores identifiers of the indoor antenna device 101 (in this example, indoor antenna devices 211 to 214). The current value column 952, the upper limit value column 953, and the lower limit value column 954 store the current value, the upper limit value, and the lower limit value of the antenna output of the indoor antenna device 101, respectively.

  The administrator uses the input device 315 of the remote monitoring device 104 to input initial information of the communication quality measurement device-indoor antenna device correspondence table 900 and the indoor antenna device output value management table 950. The input information is stored in the storage device 310 and further transmitted to the control device 103. The control device 103 creates a communication quality measuring device / indoor antenna device correspondence table 900 and an indoor antenna device output value management table 950 and stores them in the storage device 305.

  The administrator can change the contents of the communication quality measurement device-indoor antenna device correspondence table 900 and the indoor antenna device output value management table 950 in the control device 103 via the remote monitoring device 104. When the antenna output of any indoor antenna device 101 is changed, the control device 103 updates the value in the current value column 952 in the corresponding entry of the indoor antenna device output value management table 950.

  FIG. 10 is a flowchart example showing details of step S106 in the flowchart shown in FIG. Step S106 executes Step S106 when the determination result of the measurement result of one or a plurality of communication quality measuring apparatuses 102 indicates the antenna output change. In the example of FIG. 8, step S106 is executed only for the communication quality measuring device 201.

  11 shows an example of the determination result table 1100 corresponding to FIGS. 5, 8, and 10, and FIG. 12 shows an example of the comparison table 1200 before and after the antenna output adjustment. The determination result tables 1100 and 1200 show the contents after the processing of FIG. These tables 1100 and 1200 will be described in the flowchart of FIG.

  Returning to FIG. 10, the processing device 304 determines from the communication quality measurement device-indoor antenna device correspondence table 900 that the determination result (the determination result of steps S102 and S104) indicates the antenna output adjustment (not determined). The indoor antenna device 101 corresponding to all the communication quality measuring devices) is selected (S202).

  8 and 9A, the processing device 304 selects the indoor antenna devices 211 and 212 corresponding to the communication quality measuring device 201. When the measurement results of the plurality of communication quality measuring apparatuses 201 indicate adjustment of the antenna output, the indoor antenna apparatuses 101 corresponding to all the communication quality measuring apparatuses 201 are selected.

  The processing device 304 compares the upper limit value of the antenna output of each selected indoor antenna device 101 with the current value (S203). The processing device 304 can acquire the antenna output upper limit value and the current value of the selected indoor antenna device 101 from the indoor antenna device output value management table 950. For example, the upper limit value of each of the indoor antenna devices 211 and 212 is 40, and the current value is 36.

  The processing device 304 executes step S203 for each selected communication quality measuring device 102. When the current value of all the indoor antenna devices 101 corresponding to one communication quality measuring device 102 has reached the upper limit value (S203: NO), the processing device 304 determines the determination result column 1108 of the corresponding entry in the determination result table 1100. “Unadjustable” is input to “”, and the total increase value of the antenna output is input to the change value column 1109 (S204). Note that the processing device 304 may move to step S204 when the current value of any one indoor antenna device 101 corresponding to one communication quality measuring device 102 has reached the upper limit value.

  The configuration of the determination result table 1100 is the same as that of the determination result table 700. The communication quality measurement device column 1101, the measurement start date / time column 1102, the measurement end date / time column 1103, the PSC column 1104, the RSCP column 1105, the Ec / No column 1106, Io A column 1107, a determination result column 1108, and a change value column 1109;

  When any current value of the indoor antenna device 101 corresponding to one communication quality measuring device 102 does not reach the upper limit value (S203: YES), the processing device 304 determines that the antenna of the indoor antenna device 101 corresponding to the condition The output is increased by the adjustment width (specified in the column 508 of the measurement / control setting table 500) (S205). The value of the adjustment width may be different between the communication quality measurement device 102 or the indoor antenna device 101.

  In the example of FIG. 9B, since the current values of the indoor antenna devices 211 and 212 have not reached the upper limit value, the processing device 304 increases the antenna output of the indoor antenna devices 211 and 212 by 2 dBm. Specifically, the processing device 304 instructs the output control devices 307 of the indoor antenna devices 211 and 212 to increase the antenna output by designating the increase. The output control device 307 increases the output of the antenna 306 by the instructed increase (2 dBm).

  The processing device 304 updates the value of the current value column 952 to the value of (current value + adjustment width) in the entry of the indoor antenna device 101 whose antenna output is changed in the indoor antenna device output value management table 950 (S206). .

  After changing the antenna output, the processing device 304 remeasures the communication quality by the communication quality measuring device 102 (S207). In this example, remeasurement is performed for each floor, and in the examples of FIGS. 2 and 8, the communication quality measuring devices 201 to 204 remeasure the communication quality. The processing device 304 instructs the communication quality measurement devices 201 to 204 to remeasure the communication quality. Receiving the instruction, the communication quality measuring apparatuses 201 to 204 measure the communication quality under the same conditions as the regular measurement, and transmit the result to the control apparatus 103.

  The processing device 304 that has received the remeasurement results stores them in the storage device 305, and further creates a comparison table 1200 before and after output adjustment (S208). The comparison table 1200 shows a comparison of measurement data before and after the antenna output adjustment of the indoor antenna device 101 is performed. For example, the comparison table 1200 is created for each floor.

  As illustrated in FIG. 12, the comparison table 1200 includes a communication quality measurement device column 1204, a pre-change measurement result column 1201, a post-change measurement result column 1202, and a difference column 1203. The example of FIG. 12 shows information about the communication quality measuring apparatuses 201 to 204.

  The pre-change measurement result column 1201 further includes a PSC column 1205, an RSCP column 1206, an Ec / No column 1207, and an Io column 1208. Similarly, the post-change measurement result column 1202 includes a PSC column 1209, an RSCP column 1210, an Ec / No column 1211, and an Io column 1212.

  The pre-change measurement result column 1201 stores the measurement results of each communication quality measuring apparatus 102 before the antenna output is changed. The post-change measurement result column 1202 stores the measurement result of each communication quality measuring device 102 after the antenna output is changed. The difference column 1203 shows the difference of Ec / No before and after the antenna output change. That is, it is a value obtained by subtracting the value of Ec / No before change (value of column 1207) from the value of Ec / No after change (value of column 1211).

  The processing device 304 refers to the difference column 1203 of the created comparison table 1200 and determines whether the difference value of each entry is positive or negative (S209). In the example of FIG. 12, the difference of Ec / No before and after the antenna output change in the entry of the communication quality measuring apparatus 201 is 1.6, and the other entries are 0. That is, the difference value of all entries is positive.

  When the difference value of any entry is negative (S209: YES), the processing device 304 outputs the antenna outputs of all the changed (increased) indoor antenna devices 101 (in this example, the indoor antenna devices 211 and 212). Is returned (decreased) to the value immediately before the change (S210). This is because the difference value being negative means that the communication quality has deteriorated due to a change in the antenna output (increase in this example).

  For example, the processing device 304 designates the antenna output change amount to the indoor antenna device 101 (indoor antenna devices 211 and 212 in the example of FIG. 8) and instructs the antenna output change. The output control device 307 of each indoor antenna device changes (decreases) the radio wave transmission output of the antenna 306 by a specified amount (−2 dBm).

  Thereafter, the processing device 304 inputs “improvement impossible” in all entries (only the entry of the communication quality measuring device 201 in this example) for which the determination result (column S1108) is not input in the determination result table 1100.

  When the difference values of all the entries are not negative (positive or 0) (S209: NO), the processing device 304 changes the antenna output for each of the communication quality measurement devices 102 that have not yet been determined (column 1108). The subsequent Ec / No (column 1211) is compared with the adjustment threshold value (value in the column 507 of the measurement / control setting table 500) (S212).

  When Ec / No of any undetermined communication quality measurement device is smaller than the adjustment threshold (S212: YES), the processing device 304 returns to step S202. In step S202, the processing device 304 selects the indoor antenna device 101 corresponding to the communication quality measuring device 102 of the entry whose Ec / No (value of the column 1211) after the change is smaller than the adjustment threshold value.

  Before returning to step S202, the processing device 304, in the determination result table 1100 corresponding to the entry whose Ec / No after change is equal to or greater than the adjustment threshold (S212: NO) (in this example, the communication quality measuring device 201). In (entry), “improvement completion” is input in the field of the determination result column 1108, and the total increase value of the antenna output is input in the change value column 1109 (S213).

  In the example of the determination result table 1100 of FIG. 11, the determination result column 1108 of the entry of the communication quality measuring apparatus 201 stores “improvement completion”, and the change value column 1109 stores the total increase value “2” of the antenna output. ing.

  The processing device 304 ends step S106, inputs the determination result to the determination result column 1108 of all entries of the determination result table 1100, and then information on the improvement result (“improvement complete” or “improvement impossible”) by the antenna output adjustment. For example, all information in the determination result table 1100 is transmitted to the remote monitoring device 104.

  The remote monitoring device 104 stores the received information in the storage device 310, and the processing device 309 displays the contents of the determination result table 1100 on the display device 308 and notifies the administrator. As a result, the administrator can know the current communication quality of the indoor antenna device 101 and can know the necessary improvement in communication quality.

  In the antenna output adjustment of the indoor antenna device 101 for indoor countermeasures, when a quality deterioration that cannot improve the communication quality is detected, the measurement result and the adjustment result are transferred to the remote monitoring device 104 and are displayed on the display device 308 of the remote monitoring device 104. By generating an alarm, it is possible to notify the administrator of the deterioration in quality.

  By repeating the change of the antenna output of the indoor antenna device 101 and the measurement by the communication quality measuring device 102, it is possible to adjust the antenna output while confirming the effect of improving the communication quality by changing the antenna output, thereby improving the quality reliably. An effect is obtained.

  In the above example described with reference to FIG. 10, the determination results of steps S102 and S104 in FIG. 6 indicate that the antenna output has changed (Ec / No is between two threshold values) for all communication quality measuring apparatuses 102. Step S106 is executed, but the processing device 304 may execute the flow of FIG. 6 and FIG. 10, that is, the determination on the measurement result and the antenna output adjustment for each communication quality measuring device 102. The processing device 304 adjusts only the antenna output of the indoor antenna device 101 corresponding to one selected communication quality measurement device 102 in each flow.

  As described above, in this embodiment, the antenna output of the indoor antenna device 101 can be appropriately controlled by measuring the wireless communication quality by the communication quality measuring device 102 having the antenna 301 that receives the wireless signal.

  In the above example, the control device 103 increases the antenna output by the absolute evaluation of the current communication quality using the adjustment threshold. Unlike this, the control device 103 may increase and decrease the antenna output. For example, when the control device 103 has two adjustment threshold values and the current Ec / Io is larger than the large adjustment threshold value, the control device 103 decreases the output of the corresponding indoor antenna device 101 and the current Ec / Io is smaller than the small adjustment threshold value. If it is smaller, the output of the corresponding indoor antenna device 101 is increased.

  According to the present embodiment, it is possible to continuously grasp the change in the radio wave environment that affects the communication quality from a remote location, thereby reducing the cost and time required for the investigation of the communication quality and reducing the indoor communication quality degradation. It can be grasped at an early stage.

  Furthermore, in buildings where antenna devices for quality improvement are installed indoors, indoor antennas are automatically detected when a decrease in indoor communication quality due to changes in the outdoor radio wave environment or a decrease in quality due to layout changes in the indoor antenna device is detected. Since the signal transmission power (antenna output) of the apparatus can be adjusted and the result can be confirmed, the period during which the communication quality is low can be shortened.

  In the following, Example 2 of the present invention will be described. In the following, the difference from the first embodiment will be mainly described. In this embodiment, the communication quality is relatively evaluated with respect to the reference communication quality measurement result, and the antenna output of the indoor antenna apparatus is controlled based on the relative evaluation. In this example, the communication quality measurement result when the indoor antenna apparatus is installed is used as the reference measurement result, but the measurement result at another timing may be used as the reference measurement result.

  FIG. 13 is a flowchart showing an example of communication measurement and antenna output control in the indoor antenna apparatus control system of this example. Each communication quality measuring device 102 measures the quality of a designated radio signal (radio signal) (S301). Each communication quality measuring apparatus 102 periodically measures the communication quality according to the measurement method defined by the measurement / control setting table 500.

  Step S301 shows one periodic measurement. Prior to this measurement, each communication quality measurement device 102 performs a reference measurement (measurement when the indoor antenna device is installed), and the control device 103 stores the measurement result of the reference measurement in the storage device 305. ing. The reference measurement result is stored in a table having the same configuration as the measurement result table 400, for example.

  Each communication quality measuring device 102 transmits the measurement result to the control device 103 when the regular measurement is completed. The processing device 304 of the control device 103 stores the periodic measurement result acquired from each communication quality measurement device 102 in the measurement result table 400.

  The processing device 304 compares the periodic measurement result received from each communication quality measurement device 102 with the reference measurement result stored in advance (S302). In one example, the processing device 304 creates a reference table 1400 and a regular measurement result comparison table 1400 illustrated in FIG. The processing device 304 determines whether or not the antenna output of the indoor antenna device 101 corresponding to each communication quality measuring device 102 has been changed based on the comparison result obtained by referring to the comparison table 1400.

  The comparison table 1400 includes a communication quality measurement device column 1404, a reference measurement result column 1401, a periodic measurement result column 1402, and a difference column 1403. The example of FIG. 14 corresponds to the example of the floor of FIG. The reference measurement result column 1401 further includes a PSC column 1405, an RSCP column 1406, an Ec / No column 1407, and an Io column 1408. Similarly, the periodic measurement result column 1402 includes a PSC column 1409, an RSCP column 1410, an Ec / No column 1411, and an Io column 1412.

  The reference measurement result column 1401 stores a reference measurement result, that is, a communication quality measurement result by each communication quality measuring device 102 when the indoor antenna device is installed in this example. The regular measurement result column 1402 stores the regular communication quality measurement result of each communication quality measuring apparatus 102. The difference column 1403 indicates the difference between Ec / No between the reference measurement result and the regular measurement result. That is, it is a value obtained by subtracting the Ec / No value (column 1407 value) of the reference measurement result from the Ec / No value (column 1411 value) of the periodic measurement result.

  The processing device 304 executes step S303 to step S306 for each entry (measurement result of each communication quality measuring device 102) in the comparison table 1400. In step S303, the processing device 304 compares the absolute value of the difference of Ec / No in the selected entry with a specified adjustment range (see the measurement / control setting table 500).

  When the absolute value of the difference of Ec / No is smaller than the adjustment width (−1 × adjustment width <difference <adjustment width) (S304: YES), the processing device 304 enters the determination result column in the corresponding entry of the determination result table. Enter “No adjustment”. Although the determination result table in this example is not illustrated, the configuration is the same as the determination result tables 700 and 1100.

  When the absolute value of the difference of Ec / No is equal to or larger than the adjustment range (S304: NO), the processing device 304 uses the indoor antenna corresponding to the communication quality measuring device 201 from the communication quality measuring device-indoor antenna device correspondence table 900. The device 101 is selected (S305). The processing device 304 determines whether or not the difference of Ec / No (value in the column 1403) is negative for each communication quality measuring device 102 (S306).

  When the difference of Ec / No is a negative value (S306: YES), the processing device 304 decreases the antenna output of the corresponding indoor antenna device 101 (S307). When the difference of Ec / No is a value greater than or equal to 0 (S306: NO), the processing device 304 increases the antenna output of the corresponding indoor antenna device 101 (S308).

  In the following description, the processing device 304 executes each of step S307 and step S308 for all the communication quality measurement devices 102 (indoor antenna devices 101) that meet the conditions of each step. As mentioned in the first embodiment, the processing device 304 may execute step S307 and step S308 for each communication quality measuring device 102.

  Next, details of Step S308 (antenna output increase) will be described with reference to the flowchart of FIG. The processing device 304 of the control device 103 executes steps S401 to S404 for each entry (communication quality measuring device 102) for which the determination result in step S306 is positive.

  The processing device 304 compares the upper limit value of each antenna output of the indoor antenna device 101 corresponding to the selected communication quality measuring device 102 with the current value (S401). The processing device 304 can acquire the antenna output upper limit value and the current value of the corresponding indoor antenna device 101 from the indoor antenna device output value management table 950.

  When the current value of all the indoor antenna devices 101 corresponding to one communication quality measuring device 102 has reached the upper limit value (S401: NO), the processing device 304 displays "" in the determination result column of the corresponding entry in the determination result table. "Unadjustable" is input, and the total increase value of the antenna output is input to the change value column (S402). Note that the processing device 304 may move to step S402 when the current value of any one of the indoor antenna devices 101 has reached the upper limit value.

  If any current value of the indoor antenna device 101 does not reach the upper limit value (S401: YES), the processing device 304 adjusts the antenna output of the indoor antenna device 101 corresponding to the condition to the adjustment width (measurement / control setting). (Specified in the column 508 of the table 500) (S403). Specifically, the processing device 304 instructs the output control device 307 of the indoor antenna device 101 to increase the antenna output by designating the increased amount. The output control device 307 increases the output of the antenna 306 by the instructed increase.

  The processing device 304 updates the value of the current value column 952 to the value of (current value + adjustment width) in the entry of the indoor antenna device 101 whose antenna output has been changed in the indoor antenna device output value management table 950 (S404). .

  The processing device 304 remeasures the communication quality by the communication quality measuring device 102 (communication quality measuring devices 201 to 204 in this example) (S405). Steps S405 to S409 are the same as steps S207 to S211 in FIG.

  When the difference in Ec / No of all entries before and after output adjustment is a positive value, that is, when the measurement quality after output adjustment is improved from the communication quality before output adjustment (S407: NO), the processing device 304 Compares the reference measurement result with the measurement result after the output change (S410).

  For example, the processing device 304 creates a comparison table 1600 of the reference measurement result and the measurement result after the output change illustrated in FIG. In FIG. 16, the comparison table 1600 has a configuration similar to the reference measurement result comparison table 1400 shown in FIG. The comparison table 1600 of the reference measurement result and the measurement result after changing the output stores the measurement result after changing the antenna output instead of the regular measurement result. The comparison table 1600 is created for each floor, for example.

  The comparison table 1600 includes a communication quality measurement device column 1604, a reference measurement result column 1601, an output change measurement result column 1602, and a difference column 1603. The example of FIG. 16 shows information about the communication quality measuring apparatuses 201 to 204.

  The reference measurement result column 1601 further includes a PSC column 1605, an RSCP column 1606, an Ec / No column 1607, and an Io column 1608. Similarly, the post-output change measurement result column 1602 includes a PSC column 1609, an RSCP column 1610, an Ec / No column 1611, and an Io column 1612.

  A difference column 1603 indicates the difference in Ec / No between the reference measurement result and the measurement result after changing the output. That is, it is a value obtained by subtracting the Ec / No value (column 1607 value) of the reference measurement result from the Ec / No value (column 1611 value) of the measurement result after output change.

  The processing device 304 compares the absolute difference value of Ec / No (the absolute value of the difference column 1603) of each communication quality measuring device 102 corresponding to the indoor antenna device 101 with the increased antenna output with the specified adjustment width ( S411). When the absolute difference value of Ec / No is less than the specified adjustment width (S411: YES), the processing device 304 inputs “measure complete” in the determination result column of the entry of the communication quality measuring device 102 in the determination result table. Further, the total output increase value is input to the change value column (S412).

  When the communication quality measurement device 102 (entry of the determination result table) has increased the antenna output of the corresponding indoor antenna device 101, and there remains an entry whose Ec / No difference absolute value is equal to or greater than a predetermined adjustment width ( (S411: NO), the processing device 304 returns to step S401.

  Next, details of step S307 (decrease in antenna output) will be described with reference to the flowchart of FIG. Below, it demonstrates centering on difference with step S308. The upper limit value of each antenna output of the indoor antenna apparatus 101 corresponding to the selected communication quality measuring apparatus 102 is compared with the current value (S501).

  When the current value of all the indoor antenna devices 101 corresponding to one communication quality measuring device 102 has reached the lower limit value (S501: NO), the processing device 304 displays “" in the determination result column of the corresponding entry in the determination result table. "Unadjustable" is input, and the total decrease value of the antenna output is input to the change value column (S502).

  If any current value of the indoor antenna device 101 has not reached the lower limit value (S501: YES), the processing device 304 decreases the antenna output of the indoor antenna device 101 that satisfies the condition by a specified adjustment width. (S503).

  The processing device 304 updates the value of the current value column 952 to the value of (current value−adjustment width) in the entry of the indoor antenna device 101 whose antenna output has been changed in the indoor antenna device output value management table 950 (S504). .

  The processing device 304 remeasures the communication quality by the communication quality measuring device 102 (communication quality measuring devices 201 to 204 in this example) (S405). Steps S505 to S512 are the same as steps S405 to S412 in FIG. 15 except that the branch of step S507 is opposite to the branch of step S407.

  That is, in the flow of FIG. 17, when the difference in Ec / No of all entries before and after output adjustment is a negative value (S507: YES), the processing device 304 displays the reference measurement result and the measurement result after the output change. Compare (S510). If the Ec / No difference of any entry before and after output adjustment is 0 or more (S507: NO), the processing device 304 returns the antenna output (S508).

  The processing device 304 transmits the determination result table to the remote monitoring device 104 after the flow of FIG. The processing device 304 may transmit the comparison table 1400 for the reference measurement result and the regular measurement result, and the comparison table 1600 for the reference measurement result and the measurement result after changing the output to the remote monitoring device 104. The remote monitoring device 104 can present the received information to the administrator.

  As described above, in this embodiment, the antenna output of the indoor antenna device 101 is controlled by the relative evaluation of the current communication quality with respect to the reference measurement result of the communication quality, so that the change from the reference measurement result falls within the specified range. Furthermore, the antenna output of the indoor antenna device 101 can be controlled. By increasing / decreasing the antenna output of the indoor antenna device 101 according to the current communication quality, it is possible to maintain the communication quality of the corresponding indoor antenna device 101 and suppress an increase in influence on other radio signals.

  In the above example, the control device 103 increases or decreases the antenna output of the indoor antenna device 101. Instead of this, the control device 103 may increase only the antenna output of the indoor antenna device 101 as in the first embodiment.

  In this embodiment, the communication quality measuring device 102 is not installed on all floors where the indoor antenna device 101 is located. In the present embodiment, antenna output control of the indoor antenna apparatus 101 on a floor where the communication quality measuring apparatus 102 is not installed will be described. FIG. 18 shows an installation example of the indoor antenna device 101 and the communication quality measuring device 102 in the present embodiment. The indoor antenna device 101 is set on all the floors from the first floor to the seventh floor, but the communication quality measuring apparatus 102 is installed only on some floors 1, 4, and 7.

  FIG. 19 is an example of a determination result table 1900 showing the antenna output adjustment result on one floor (measurement floor) where the communication quality measuring apparatus 102 is installed and the measurement result after adjustment. For example, a determination result table for each measurement floor is created. The determination results for all measurement floors may be stored in one determination result table.

  The determination result table 1900 includes a communication quality measuring device column 1901, a measurement start date / time column 1902, a measurement end date / time column 1903, a PSC column 1904, an RSCP column 1905, an Ec / No column 1906, an Io column 1907, a determination result column 1908, and a change value. Column 1909 is included. The configuration of the determination result table 1900 is the same as that of 1100 and will not be described in detail.

  FIG. 20 shows an example of a comparison table 2000 for reference measurement results and regular measurement results. For example, a comparison table 2000 for each measurement floor is created. One comparison table 2000 may include information on all measurement floors.

  The comparison table 2000 includes a communication quality measurement device column 2004, a reference measurement result column 2001, a regular measurement result column 2002, and a difference column 2003. The reference measurement result column 2001 further includes a PSC column 2005, an RSCP column 2006, an Ec / No column 2007, and an Io column 2008. Similarly, the periodic measurement result column 2002 includes a PSC column 2009, an RSCP column 2010, an Ec / No column 2011, and an Io column 2012.

  The configuration of the comparison table 2000 is substantially the same as that of the comparison table 1400 in FIG. The difference is that the difference column 2003 of the comparison table 2000 stores the RSCP difference value. The difference column 2003 stores the RSCP difference value (obtained by subtracting the value of the column 2006 from the value of the column 2006) of the periodic measurement result with respect to the RSCP of the reference measurement result column 2001.

  The determination result table 1900 in FIG. 19 shows the result after the control device 103 adjusts the necessary antenna output of the indoor antenna device 101 on the floor from the comparison table 2000 shown in FIG.

  FIG. 21 shows an example of the output change table 2100 of the indoor antenna device 101 on the non-measurement floor. For example, the table 2100 includes entries for all indoor antenna devices 101 on the non-measurement floor, and FIG. 21 illustrates some of these entries. The table 2100 may be configured with entries of the indoor antenna device 101 on the non-measurement floor associated with the indoor antenna device on the measurement floor whose output has been changed.

  The table 2100 includes a non-measurement floor column 2101, an indoor antenna device column 2102, a measurement floor column 2103, an indoor antenna device column 2104, a change value column 2105, an RSCP difference column 2106, an anti-interference change value column 2107, and an anti-interference change maximum value. A column 2108 and a change value column 2109;

  The non-measurement floor column 2101 stores an identifier of a floor where the communication quality measurement device 102 is not installed and the communication quality measurement device 102 on the same floor is not subjected to the communication quality measurement. The indoor antenna device column 2102 stores the identifier of the indoor antenna device on the non-measurement floor. The measurement floor column 2103 stores the identifiers of the upper and lower measurement floors associated with the non-measurement floor. The measurement floor is a floor where the communication quality measuring device 102 is installed.

  The change value column 2105 stores antenna output change values in the indoor antenna device 101 on the measurement floor. This column 2105 value corresponds to the value in the change value column 1909 of the determination result table 1900. The RSCP difference column 2106 stores the RSCP difference between the reference measurement result and the regular measurement result measured by the communication quality measurement device 102 corresponding to the indoor antenna device 101 (column 2104) on the upper and lower floor measurement floors. The value in the column 2106 corresponds to the value in the difference column 2003 in the comparison table 2000.

  The interference change value column 2107 stores a value obtained by subtracting the value of the RSCP difference column 2106 from the value of the change value column 2105 of the upper and lower floors. The value in the interference change value column 2107 is an estimated value of the change value according to interference from the outside in the antenna output change value in the indoor antenna device 101 on the measurement floor.

  The maximum interference change value column 2108 stores a larger value of the values of the upper floor and the lower floor in the interference change value column 2107. The change value column 2109 stores a value obtained by rounding up the value of the anti-interference change maximum value column 2108 according to a specified adjustment range (the value of the column 508 of the measurement / control setting table 500).

  The administrator uses the remote monitoring device 104 to input information of the columns 2101 to 2104 in the antenna output change table 2100 of the non-measuring floor indoor antenna device. For example, the administrator selects the closest measurement floor as the measurement floor of the upper floor and the lower floor corresponding to the non-measurement floor, respectively, and as the indoor antenna apparatus of the measurement floor corresponding to the indoor antenna apparatus of the non-measurement floor, The indoor antenna device on the measurement floor closest to the indoor antenna device on the non-measurement floor is selected. The correspondence information between the indoor antenna device and the floor is managed in a table different from the antenna output change table 2100 of the non-measuring floor indoor antenna device, for example.

  The table 1900 to the table 2100 are stored in the storage device 305 of the control device 103, the information is transmitted to the remote monitoring device 104, and the information transmitted to the storage device 310 is stored.

  FIG. 22 is a flowchart example of processing for controlling the antenna output of the indoor antenna device 101 on the non-measurement floor. The processing device 304 of the control device 103 refers to the determination result table 1900 for all measurement floors, and determines whether there is an entry whose value in the determination result column 1908 is “improvement complete” (S601).

  When there is no entry including “improvement complete” (S601: NO), the processing device 304 ends this flow. When there is an entry including “improvement complete” (S601: YES), the processing device 304 creates the antenna output change table 2100 of the indoor antenna device on the non-measurement floor.

  In each entry of the antenna output change table 2100, the processing device 304 acquires a change value (column 1909) from the entry of the determination result table 1900 corresponding to the measurement floor (column 2103) and the indoor antenna device (column 2104). Are input to the change value column 2105 (S602). The communication quality measurement device 102 and the indoor antenna device 101 in the determination result table 1900 are associated with each other in the communication quality measurement device-indoor antenna device correspondence table 900.

  In each entry of the antenna output change table 2100, the processing device 304 determines the difference of the RSCP from the entry of the comparison table 2000 of the reference measurement result and the regular measurement result corresponding to the measurement floor (column 2103) and the indoor antenna device (column 2104). A value (column 2003) is acquired and input to the RSCP difference column 2106 (S603).

  In each entry of the antenna output change table 2100, the processing device 304 inputs a value obtained by subtracting the RSCP difference (column 2106) from the change value (column 2105) to the anti-interference change value column 2107 (S604). Further, the larger value of the upper floor and the lower floor of the anti-interference change value column 2107 is input to the anti-interference change maximum value column 2108 (S605).

  In each entry of the antenna output change table 2100, the processing device 304 rounds up the maximum value for change in interference (column 2108) by the adjustment width, calculates the change value (column 2109), and stores it in the change value column 2109. (S606). The processing device 304 adjusts the antenna output of the corresponding indoor antenna device 101 with the calculated change value (column 2109). With the above flow, it is possible to improve the deterioration in communication quality due to interference on the non-measurement floor using the measurement result of the communication quality on the measurement floor.

  In the above example, the upper and lower measurement floors are associated with the non-measurement floor, but the non-measurement floor may be associated with only one of the upper and lower floors. In the above example, the antenna output of the indoor antenna apparatus 101 on the non-measurement floor is adjusted by using the value of the anti-interference change value column 2107 as an estimated value of the change value according to external interference. The control device 103 may use a different value obtained from the measurement result on the measurement floor and the antenna output change amount as an estimated value of the change value according to the interference.

  The above example uses the RSCP difference in the relative evaluation of the periodic measurement result with respect to the reference measurement result, but uses the RSCP difference in the absolute evaluation of the measurement result with respect to the specified value on the measurement floor as described in Example 1. Then, the antenna output of the non-measuring floor may be adjusted. The adjustment of the antenna output of the non-measurement floor may be decreased in addition to increasing the antenna output.

  As mentioned above, although the Example of this invention was described, this invention is not limited to the said Example. Elements of one embodiment can be replaced with configurations of other embodiments, and elements of other embodiments can be added to configurations of one embodiment. Those skilled in the art can easily delete, change, add, and convert the elements of the above-described embodiments within the scope of the present invention.

  Each of the above components, functions, processing units, processing means, etc. may be realized in hardware by designing a part or all of them, for example, with an integrated circuit. Information such as programs, tables, and files for realizing each function is stored in a non-volatile semiconductor memory, a hard disk drive, a storage device such as an SSD (Solid State Drive), or a computer-readable non-readable information such as an IC card, an SD card, or a DVD. It can be stored on a temporary data storage medium.

DESCRIPTION OF SYMBOLS 101 Indoor antenna apparatus, 102 Communication quality measuring apparatus, 103 Control apparatus, 104 Remote monitoring apparatus, 201-204 Communication quality measuring apparatus, 211-214 Indoor antenna apparatus, 221 Opening part, 301 Receiving antenna, 302 Processing apparatus, 303 Storage apparatus 304 processing device, 305 storage device, 306 transmission / reception antenna, 307 output control device, 308 display device, 309 processing device, 310 storage device, 312 control device, 315 input device, 400 measurement result table, 500 measurement / control setting table, 700 determination result table, 800 measurement result table, 900 communication quality measuring apparatus-indoor antenna apparatus correspondence table, 1100 determination result table, 1200 measurement result comparison table before and after output adjustment, 1400 ratio of reference measurement result to regular measurement result Comparison table, comparison table of 1600 reference measurement result and measurement result after output change, 1900 determination result table, comparison table of 2000 reference measurement result and periodic measurement result, 2100 antenna output change table of indoor antenna device on unmeasured floor

Claims (10)

A control system that transmits and receives radio signals to and from a mobile terminal and controls an indoor antenna device installed indoors,
A communication quality measuring device installed indoors;
A control device for controlling the indoor antenna device based on a measurement result of a radio signal by the communication quality measuring device,
The communication quality measuring device is
A first wireless signal including a wireless signal transmitted by the indoor antenna device is received by an antenna, and the quality of the received first wireless signal is measured;
Transmitting a first measurement result of the quality of the first radio signal to the control device;
The control device includes:
Whether to adjust the antenna output of the indoor antenna device by comparing the first measurement result received from the communication quality measuring device with reference information prepared before the measurement of the first radio signal Determine
A control system for controlling an antenna output of the indoor antenna device according to the determination result. The control system according to claim 1,
The reference information includes a first threshold value that is defined in advance and represents a communication quality,
The control device compares the value obtained from the first measurement result with the first threshold value, and determines whether or not to adjust the antenna output of the indoor antenna device. The control system according to claim 2,
The control system further includes a management device having an output device that outputs information received from the control device,
The reference information includes a second threshold that is defined in advance and represents communication quality lower than the first threshold;
The control device compares the second threshold and the value obtained from the measurement result, and transmits information obtained from the measurement result to the management device without adjusting the antenna output of the indoor antenna device. Control system to determine whether. The control system according to claim 1, 2, or 3,
The communication quality measuring device re-measures the quality of the first radio signal after the antenna output of the indoor antenna device is adjusted according to the first measurement result,
The control device compares the measurement result of the remeasurement with the reference information, and determines whether or not to readjust the antenna output of the indoor antenna device. The control system according to claim 1,
The reference information includes a reference measurement result that is a result of measurement performed by the communication quality measurement device before the measurement,
The control device compares the value obtained from the first measurement result with the value obtained from the reference measurement result, and determines whether or not to adjust the antenna output of the indoor antenna device. . The control system according to claim 5,
In the adjustment of the antenna output, the control device selects one of the adjustment methods including an increase and a decrease in the antenna output so that a difference between the obtained value and the reference measurement result is within a predetermined range. Control system. The control system according to any one of claims 1 to 6,
A second indoor antenna device for transmitting the first radio signal;
The communication quality measuring device and the indoor antenna device are installed on the first floor,
The second indoor antenna device is installed on a second floor different from the first floor,
The control device includes:
Based on the antenna output change amount of the indoor antenna device and the first measurement result, the change amount corresponding to external interference in the antenna output change amount of the indoor antenna device is estimated,
A control system that determines an antenna output change amount of the second indoor antenna device based on the estimated change amount. A control method for transmitting / receiving radio signals to / from a mobile terminal and controlling an indoor antenna device installed indoors,
The first radio signal including the radio signal transmitted by the indoor antenna device is received by the antenna installed indoors, the quality of the received first radio signal is measured, and the measurement result of the quality of the first radio signal Get
Comparing the measurement result with reference information prepared before the measurement of the first wireless signal, and determining whether to adjust the antenna output of the indoor antenna device;
A control method for controlling an antenna output of the indoor antenna device according to the determination result. The control method according to claim 8, comprising:
After the antenna output of the indoor antenna device is adjusted according to the first measurement result, the quality of the first radio signal is re-measured,
The control method of comparing the measurement result of the said remeasurement with the said reference information, and determining whether the antenna output of the said indoor antenna apparatus is readjusted. The control method according to claim 8 or 9, wherein
The reference information includes a reference measurement result that is a result of measurement performed by the communication quality measurement device before the measurement,
A control method for determining whether or not to adjust an antenna output of the indoor antenna device by comparing a value obtained from the first measurement result with a value obtained from the reference measurement result.

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