JP5696090B2 - Antenna connection direction detection apparatus and method - Google Patents

Description

  The present invention relates to an antenna connection direction detection device for detecting a connection direction of a directional antenna installed in a radio base station based on information recorded in a radio base station having a plurality of directional antennas and a plurality of radio communication devices. And its method.

  For arrangement of radio base stations in a mobile communication system, a system generally called “cell system” is used (see Non-Patent Document 1). In order to efficiently use the radio frequency band assigned to the mobile communication system, the cell system is arranged with a large number of radio base stations that keep the radio wave coverage in a certain area, and is different between adjacent radio base stations. This is a method for improving the frequency utilization efficiency by repeatedly assigning and using the same frequency band to remote radio base stations while allocating the frequency band.

  The determination of the cell arrangement is called cell design, and the cell design of a mobile phone is generally an arrangement of regular hexagonal cells. A configuration in which a regular hexagonal cell is divided into a plurality of cells and a directional antenna (an antenna having a particularly high gain in a specific direction) is used for each divided cell is called a “sector configuration”, and a cell is divided into three sectors. Alternatively, a 6-sector configuration in which a cell is divided into 6 is common.

  In the three-sector configuration, three sets of wireless communication devices and directional antennas are installed in one base station. These three sets of sectors are referred to as “sector 1”, “sector 2”, and “sector 3” from true north, and the direction with the highest gain of the directional antenna is referred to as the pointing direction. In this case, true north is 0 degree, east is 90 degrees, south is 180 degrees, and west is 270 degrees. In addition, a range in which radio waves radiating from one directional antenna arrives is referred to as a “cover area”.

  The wireless communication device and the antenna basically have a one-to-one configuration. Moreover, a cable is used for those connections. In the case of a three-sector configuration, three wireless communication devices and three antennas for them are connected by cables. Generally, the connection work is carried out by human hands together with other cable connection work. Yes.

  In order to connect the wireless communication apparatus and the antenna, a method for preventing erroneous connection, such as visual confirmation or affixing a tape describing the connection sector number to both ends of the cable, is taken. However, there are cases where the wireless communication device and the antenna are not connected as specified due to incomplete visual confirmation or an error in attaching the sector number tape, and incorrect ones are connected. These erroneous connections will be referred to as “teleco state”.

  In the teleco state, the notification information set by the wireless communication apparatus for each sector is notified to the cover area of another sector without being notified to the cover area of the intended sector. In addition, the broadcast information includes setting of peripheral base station information for performing handoff (selecting a base station that can expect the best communication and taking over communication), and for each cover area of each sector Base station information is set.

  The mobile device detects the radio waves of the neighboring base stations based on the notification information, and performs the handoff when detecting the radio waves of the base stations that can be handed off. In this case, the radio waves of the neighboring base stations are detected based on the neighboring base station information of the cover areas of different sectors. Since the mobile station does not detect a base station that is not in the neighboring base station information, even if the radio wave from the intended neighboring base station is strongly flying by design, the mobile station is not included in the neighboring base station information. In the state, the base station is not detected as a neighboring base station, and handoff to the base station cannot be performed. In general, in a mobile communication system, radio waves other than radio waves that are being communicated become interference waves that interfere with the communication, and communication is disconnected if the handoff cannot be performed with strong interference waves. There is a possibility that the service quality will be degraded.

  In order to prevent such problems, mobile communication event persons analyze the statistical data stored in the maintenance / monitoring equipment for each individual sector in detail over time, and based on the analysis results, the telecom state is suspected. When a station is extracted, a method is employed in which the user goes to the location where the base station is installed to check the presence or absence of a teleco status and responds according to the confirmed content.

3GPP TS 23.009 6.1 Procedure for Intra-MSC Handovers

  When a large number of call disconnections occur due to the teleco status, it is possible to detect the teleco status by obtaining statistical data on the number of disconnections using a maintenance / monitoring device (device that monitors the communication status) of the wireless device. is there. However, in the actual coverage area, there are many communications that can be handed off with the surrounding base station information that happens to be set off without handoff, and there are few communications that lead to disconnection. It is difficult to detect the teleco status. In addition, even if the teleco status can be detected from the statistical data, in order to identify whether the disconnection is due to the teleco status or due to other factors (such as omission of setting of neighboring base station information) Since it is necessary to collect the number of cuts, handoff tendency, etc. for each analysis in detail, a lot of time and man-hours are required.

  Also, around the base station installation location, use a device that can capture radio waves, such as a mobile device, to capture the radio waves emitted from the antenna. A method of detecting the teleco status by confirming whether or not there is also conceivable. However, the measurement requires cost and time because it requires movement to the base station installation position and operation of personnel. In addition, since there are only a few base stations that are in the telecom state, it is unrealistic to investigate all the tens of thousands of base stations owned by communication carriers.

  The present invention relates to an antenna connection direction detection device capable of accurately detecting the connection direction of each directional antenna based on information recorded in a radio base station having a plurality of directional antennas and a plurality of radio communication devices, and It is to provide such a method.

  In order to solve the above problems, the present invention provides handoff information recorded in a radio base station in which a plurality of directional antennas and a plurality of radio communication apparatuses are connected to each other, the latitude / longitude of the radio base station, Based on the base station data including the directivity direction of each directional antenna, the wireless base station as a starting point on the latitude / longitude coordinate axis, and the handoff destination wireless base station as an end point on the latitude / longitude coordinate axis, The direction of the vector connecting the starting point and the end point is calculated for each directional antenna, the calculated directions are compared with the direction determination reference value set for each directional antenna, and the direction calculation is performed. It is characterized by determining whether each direction calculated by the unit is within the range of the direction determination reference value.

  ADVANTAGE OF THE INVENTION According to this invention, the connection direction of each directional antenna installed in a wireless base station can be detected correctly.

It is a block diagram of a mobile communication system. It is a block diagram which shows the relationship between a gateway apparatus and a display apparatus. It is a block diagram of a base station management table. It is a block diagram of the display screen for displaying the collection | recovery base station list and the acquisition period of handoff information. It is a block diagram of a handoff information management table. It is a block diagram of a vector data management table. It is a block diagram of a calculation information management table. It is a flowchart for demonstrating the process of a mobile communication system. It is a screen block diagram which shows the example of a display of a vector. It is a flowchart for demonstrating a directivity direction determination process. It is a block diagram of a determination result management table. It is a block diagram of a directivity direction / directivity order determination pattern. It is a flowchart for demonstrating an orientation order determination method. It is a flowchart until it demonstrates the process from collection of handoff data to teleco determination. It is a block diagram of a determination result management table. It is a block diagram for demonstrating the design state and telecom state of 3 sector structure. It is a block diagram for demonstrating the design state and telecom state of 3 sector structure. It is a block diagram of a determination result management table. It is a block diagram of a total data management screen.

(First embodiment)
A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a mobile communication system. In FIG. 1, the mobile communication system includes a gateway device 10, a plurality of radio base stations (hereinafter also referred to as base stations) 20 and 22, a mobile device 30, and a database 40. Each of the base stations 20 and 22 has, for example, a directional antenna having a three-sector configuration and a wireless communication device (both not shown), and communicates with the mobile device 30 existing in the coverage area of the omnidirectional antenna. Then, handoff information indicating the communication record of the mobile device 30 is transmitted to the gateway device 10.

  For example, when the mobile device 30 is handed off from the base station 20 to the base station 22, the base station 22 succeeds in handing off the mobile device 30 from the base station 20 to the base station 22 to the gateway device 10. This information is transmitted using the notification information 100 indicating that this has been done. When the gateway device 10 receives the notification information 100, the gateway device 10 records the received notification information 100 as handoff information in the database 40 as needed. Note that the gateway device 10 sequentially deletes the handoff information according to the capacity of the database 40.

  FIG. 2 is a configuration diagram of a display device for displaying handoff information. In FIG. 2, the display device 50 includes databases 42 and 44, and exchanges information with the gateway device 10. When the gateway device 10 transmits the handoff information recorded in the database 40 to the display device 50 during, for example, a time zone when the network is not congested or a predetermined time zone, the display device 50 transmits from the gateway device 50. The received handoff information is received, and the received handoff information is stored in the database 42. The gateway device 10 transmits the handoff information recorded in the database 40 to the display device 50 as needed when there is a request for transmission of the latest handoff information from the display device 50. At this time, the display device 50 sequentially deletes old handoff information according to the capacity of the database 42. The database 44 stores information such as a base station management table input by the user.

  The display device 50 is constituted by a computer device having a CPU (Central Processing Unit), an input / output interface, a memory, and the like, and can display information recorded in the databases 42 and 44.

  FIG. 3 is a configuration diagram of the base station management table recorded in the database 44. In FIG. 3, a base station management table 200 is a cable for managing the connection relationship between directional antennas installed in the base stations 20 and 22 and wireless communication devices, and includes a base station name 202, a sector number, and the like. 204, latitude 206, longitude 208, directivity direction 210, and beam width 212. The base station name 202 stores an identifier for identifying the base stations 20 and 22. The sector number 204 stores the sector number of the omnidirectional antenna installed in each base station 20, 22.

  At this time, when the directional antennas of the base stations 20 and 22 have a three-sector configuration, numbers “1” to “3” are stored as sector numbers. Information on the latitude of the place where the base stations 20 and 22 are installed is stored in the latitude 206, and information on the longitude of the place where the base stations 20 and 22 are installed is stored in the longitude 208. In the directivity direction 210, information indicating a direction in which the first gain of each directional antenna installed in each base station 20, 22 is high is stored. At this time, the directivity direction 210 is represented by setting true north as 0 degrees, east as 90 degrees, south as 180 degrees, and west as 270 degrees. The beam width 212 stores information on the angle in the range in which the gain of the directional antenna is in the horizontal direction from the highest value to half of the highest value.

  FIG. 4 is a configuration diagram of a display screen for performing input of the aggregation target base station and setting of a handoff information acquisition period. In FIG. 4, the display screen 300 of the display device 50 includes a total base station list display area 301 for which the directing direction is to be confirmed, and an input area 302 for inputting an acquisition period of handoff information used for totaling.

  When setting the target base station input and setting the handoff information acquisition period, the user registers the target base station name for which the user wants to check the orientation direction in the target base station list display area 301, thereby calculating the target Base stations are designated. As a registration method, first, when the user inputs a part of the base station name in the base station name input box 303 and operates the search button 304, the base station name 202 recorded in the database 44 is selected. , Candidate base station names that partially match are displayed. Thereafter, when the user selects the target base station from the base station name candidates, the base station name of the target station is displayed in the base station name input box 303. At this time, when the user presses the add button 305, the base station name is added to the aggregation target base station list in the aggregation target base station list display area 301.

  When the user presses the area addition button 306 and designates the range of the target location using a polygon or the like, the designated latitude / longitude is selected from the latitude 206 and longitude 208 recorded in the database 44. All base station name candidates included in the range are displayed in the aggregation target base station list display area 301.

  Next, when the user inputs the acquisition period of handoff information used for aggregation into the data acquisition start date 307, the data acquisition start time 308, the data acquisition end date 309, and the data acquisition end time 310, the handoff information acquisition period Is specified.

  The data acquisition start date 307 and the data acquisition end date 309 can be directly input by the user. In addition, when the user wants to total the handoffs periodically, the user selects the periodic aggregation button 311 in accordance with the periodically aggregated period, so that the data acquisition start date 307 and the data acquisition end date 309 are automatically set. Set by.

  Further, the data acquisition start time 308 and the data acquisition end time 310 can be directly input by the user. When the user wants to acquire data for one day (00:00 to 23:59), the user presses the one day button of the data acquisition period button 312 at the data acquisition start time 308 at 00: 00 is input, and 23:59 is input as the data acquisition end time 310.

  Further, when the user inputs the data acquisition start time 308 and presses any one of the data acquisition period buttons 312, the data acquisition end time 310 includes the data acquisition start time 307 to the data acquisition period. The time when the operated X time (1h to 24h) of the button 312 is added is automatically input. In addition, when it exceeds 24:00, a date is also changed. In addition, when the user inputs the data acquisition end time 310 and presses any one of the data acquisition period buttons 312, the data acquisition end time 310 is changed from the data acquisition start time 308 to X hours (1h to 1h). The time minus 24h) is automatically entered. In addition, when it exceeds 0:00, a date is also changed.

  Finally, the user inputs a data storage name in the setting name input field 313 and presses the save button 314, so that the setting conditions by the user's operation are stored in the display device 50.

  At this time, if the data acquisition end date 309 and the data acquisition end time 310 are earlier than the time of the display device 50, the display device 50 starts the data aggregation process. At this time, if the handoff information for the corresponding time does not exist in the database 42, the display device 50 transmits a message requesting transfer of the handoff information to the gateway device 10. The gateway device 10 that has received the message reads the handoff information from the database 40 and transmits the read handoff information to the display device 50. Thereafter, the display device 50 starts a data counting process based on the handoff information transferred from the gateway device 10.

  On the other hand, when the data acquisition end date 309 and the data acquisition end time 310 are a time later than the time of the display device 50, the display device 50 puts the data aggregation processing into a suspended state, and the data acquisition end date 309. The data collection processing is started at the timing when the data acquisition end time 310 is passed and the information in the database 42 is updated.

  FIG. 5 is a configuration diagram of the handoff information management table. In FIG. 5, the handoff information management table 400 is for managing the relationship between the base stations registered in the aggregation target base station list and the base station to which the handoff is performed, based on the handoff information recorded in the database 42. This table includes a confirmation base station name 402, a sector number 404, a handoff destination base station name 406, and the number of handoffs 408.

  The confirmation base station name 402 is input with the base station name registered in the total base station list. The sector number 404 corresponds to the base station name in which the base station name registered in the base station name 202 of the base station management table 200 in FIG. 3 matches the base station name registered in the total base station list. A sector number is entered.

  The base station name 406 of the handoff destination is a combination of the confirmed base station name 402 and the sector number 404 of the confirmed base station, and among the handoff information recorded in the database 42, the base station name 202 before handoff, The base station name that matches the combination with the sector number 204 is input.

  The number of handoffs 408 stores the number of times the confirmation base station has handed off with the handoff destination base station. At this time, the number of times of handoff from the data acquisition start time 308 on the data acquisition start date 307 to the data acquisition end time 310 on the data acquisition end date 309 is input for each base station that has been handed off.

  FIG. 6 is a configuration diagram of the vector data management table. In FIG. 6, the vector data management table 500 is a vector vector that connects the starting point and the ending point with the confirmation base station as the starting point on the latitude / longitude coordinate axis and the handoff destination base station as the ending point on the latitude / longitude coordinate axis. This is data for managing data, and includes a confirmation base station name 502, a sector number 504, a handoff destination base station name 506, a size 508, and a direction 510. The confirmed base station name 502 is the same as the confirmed base station name 402, and the sector number 504 is the same as the sector number 404. The handoff destination base station name 506 is the same as the handoff destination base station name 406.

  The size 508 indicates the same value as the number of handoffs 408 in FIG. 5, and is the size of vector data.

  A direction 510 is a vector direction connecting the starting point and the ending point with the confirmation base station as the starting point on the latitude / longitude coordinate axis and the handoff destination base station as the ending point on the latitude / longitude coordinate axis.

  The method of calculating the direction from the latitude / longitude is as follows. If the latitude / longitude of the confirmation base station is (longitude x1, latitude y1) and the latitude / longitude of the base station to be handed off is (longitude x2, latitude y2), the direction is 90- (atan2) sin (x2-x1), cos (y1) * tan (y2) -sin (y1) * cos (x2-x1)). The direction 510 is represented by setting true north as 0 degrees, east as 90 degrees, south as 180 degrees, and west as 270 degrees.

  FIG. 7 is a configuration diagram of a calculation information management table. In FIG. 7, a calculation information management table 600 is a table for managing combined vector data synthesized for each sector of the target base station from the vector data of FIG. 6, and includes a confirmation base station name 602, a sector number 604, size 606, and direction 608.

  The confirmed base station name 602 is the same as the confirmed base station name 502, and the sector number 604 is the same as the sector number 504. The size 606 is the vector data of each sector shown in FIG. 6 (vector data including the size 508 and the direction 510), and the vector data having the same confirmed base station name 502 and the same sector number 504 is the sector data. This is the size of the combined vector obtained by combining each time. That is, it is the size when vector data for three sectors is collected as one synthetic vector data. A direction 608 is a direction of the combined vector when the combined vector for three sectors is obtained. At this time, the direction 608 is represented by setting true north as 0 degrees, east as 90 degrees, south as 180 degrees, and west as 270 degrees.

  FIG. 8 is a flowchart for explaining processing of the mobile communication system. In FIG. 8, the gateway apparatus 10 collects handoff information from the base stations 20 and 22, and records the collected handoff information in the database 40 in real time (S11). Next, the gateway device 10 periodically transfers the data in the database 40 to the database 42 of the display device 50 (S12).

  Next, the CPU of the display device 50 totals data for each sector from the database 42 and records the totaled data in the handoff information management table 400 (S13).

  Next, the CPU of the display device 50 inputs the base station data (data recorded in the base station management table 200) recorded in the database 44 (S14), and totalizes the input base station data and step S13. Vector data is created based on the data (S15).

  Next, the CPU synthesizes the vector data for each sector, creates the synthesized vector data as synthesized vector data, and records the magnitude and direction of the created vector data in the vector data management table 500 (S16).

  Next, the CPU performs processing for graphing the vector data created in step S15 and the combined vector created in step S16, and stores them (S17), and ends the processing in this routine.

  FIG. 9 is a configuration diagram illustrating a display example of vector data. In FIG. 9, a vector 351 is a vector obtained from the vector data shown in FIG. 6 having the confirmed base station name 502 of “A” and the sector number 504 of “1”. The vector 352 is a vector obtained from vector data in which the confirmation base station name 502 is “A” and the sector number 504 is “2”. The vector 353 is a vector obtained from the vector data having the confirmation base station name “A” and the sector number 504 “3”.

  The vector 361 is the vector data (vector data including the size 606 and the direction 608) shown in FIG. 7, in which the confirmation base station name 602 is “A” and the sector number 604 is “1”. Is the vector obtained from The vector 362 is a vector obtained from vector data in which the confirmation base station name 602 is “A” and the sector number 604 is “2”. The vector 363 is a vector obtained from vector data in which the confirmation base station name 602 is “A” and the sector number 604 is “3”.

  FIG. 10 is a flowchart for explaining the pointing direction determination process. This process is a process for determining whether or not the calculated direction is valid.

  For example, when the CPU of the display device 50 determines the pointing direction for each sector of the confirmation base station = A, first, the CPU 50 refers to the calculation information management table 600 and the confirmation base station name 602 is “A”. The value in the direction 608 is acquired from the row in which the sector number 604 matches “1” (S21).

  Next, when acquiring the design value, the CPU refers to the base station management table 200, starts from the row where the base station name 202 is “A” and the sector number 204 is “1”, and the pointing direction 210 And the value of the beam width 212 are acquired (S22).

  Next, when calculating the minimum value of the pointing direction, the CPU calculates the minimum value of the pointing direction = directing direction 210− (beam width 212/2) (S23).

  Next, when calculating the maximum value in the pointing direction, the CPU calculates the maximum value in the pointing direction = directing direction 210+ (beam width 212/2) (S24).

  Next, the CPU determines whether or not the calculated minimum value is 0 or less and the calculated direction is greater than or equal to the maximum value (S25). When an affirmative determination result is obtained in step S25, the CPU calculates the calculated direction as direction = direction-360 (S26), and proceeds to the process of step S29.

  On the other hand, if a negative determination result is obtained in step S25, the CPU determines whether the calculated maximum value is 360 or more and the calculated direction is less than the minimum value (S27). That is, if the minimum value is less than 0 and the direction is greater than the maximum value, 360 is subtracted from the direction, and if the maximum value is greater than 360 and the direction is less than the minimum value, 360 is added.

  When an affirmative determination result is obtained in step S27, the CPU calculates the calculated direction as direction = direction + 360 (S28), and proceeds to the process of step S29.

  When a negative determination result is obtained in step S29, the CPU determines whether or not the calculated minimum value is equal to or less than the calculated direction and the calculated direction is equal to or less than the calculated maximum value (S29). If an affirmative determination result is obtained in step S29, the CPU outputs an OK determination result on the assumption that the calculated direction is within the range of the direction determination reference value (S30), and ends the processing in this routine. .

  On the other hand, if a negative determination result is obtained in step S29, the CPU outputs an NG determination result on the assumption that the calculated direction is outside the range of the direction determination reference value (S31), and processing in this routine Exit.

  FIG. 11 is a configuration diagram of the determination result management table. In FIG. 11, the determination result management table 700 is a table for managing the determination result of the pointing direction for each sector of the confirmation base station, and is the confirmation base station name 702, the sector number 704, the direction 706, the minimum It consists of a value 708, a maximum value 710, and a determination 712.

  The confirmation base station name 702 is the same as the confirmation base station name 602, and the sector number 704 is the same as the sector number 604. A direction 706 is the same as the direction 608 of the calculation information management table 600.

  The minimum value 708 is a value that defines the lower limit of the range of the direction determination reference value, and the maximum value 710 is a value that defines the upper limit of the range of the direction determination reference value. The minimum value 708 and the maximum value 710 are set in advance based on the directivity direction 210 and the beam width 212 of the base station management table 200.

  The determination 712 is a determination result indicating whether or not the value registered in the direction 706 is within the range between the minimum value 708 and the maximum value 710. When the value registered in the direction 706 deviates from the direction determination reference value, “NG” is stored in the determination 712, and the value registered in the direction 706 is within the direction determination reference value. In the determination 712, “OK” is stored.

  In the present embodiment, the display device 50 functions as an antenna connection direction detection device that detects a connection direction of a directional antenna installed in a base station with a plurality of base stations 20 and 22 as management targets. The database 44 functions as a storage unit that stores base station data including the latitude and longitude of each base station 20 and 22 and the directivity direction and beam width of each directional antenna installed in each base station.

  The CPU of the display device 50 includes a collection unit that collects handoff information indicating communication records between the base station to be aggregated and another base station from the base stations to be aggregated among the plurality of base stations 20 and 22; Based on the handoff information and handoff information collected by the collection unit, the base station to be counted is the starting point on the latitude / longitude coordinate axis, and the base station to be handed off is the end point on the latitude / longitude coordinate axis. The direction calculation unit that calculates the direction of the vector connecting each of the directional antennas installed in the base station to be aggregated, each direction calculated by the direction calculation unit, and each directivity installed in the base station to be aggregated The direction determination reference value set for the sex antenna is compared, and functions as a direction determination unit that determines whether each direction calculated by the direction calculation unit is within the range of the direction determination reference value.

  According to the present embodiment, it is possible to accurately detect the connection direction of each directional antenna installed in the base station.

(Second embodiment)
In this embodiment, not only the direction of the directional antenna of each base station is determined, but also the order of the directivity direction of each antenna is determined for a base station of three sectors or more.

  FIG. 12 is a configuration diagram of a pointing direction / directing order determination pattern. In FIG. 12, there are eight directivity direction / directivity order determination patterns 1000 for each sector with respect to the directivity direction determination pattern 110, and two patterns for the directivity order determination pattern 1020. For this reason, the directivity direction / directivity order determination pattern 1000 has 16 patterns for all patterns. In addition, there are two patterns of the directional direction / directing order determination pattern 1000 for the telescopic determination pattern 1030.

  Of the 16 patterns, when the pointing direction determination pattern 1010 is “NG”, the telescopic determination pattern 1030 is “NG” regardless of the pattern of the pointing direction determination pattern 1010. On the other hand, even if the pointing order determination pattern 1020 is “OK”, if all sectors of the pointing direction determination pattern 1010 are NG patterns, the teleco determination pattern 1030 is “NG”. For all other patterns, “telecom determination pattern 1030” is “OK”.

  FIG. 13 is a flowchart for explaining the pointing order determination process. In FIG. 13, for example, when determining the orientation order of “A” as the confirmation base station name, the CPU of the display device 50 uses the calculation information management table 600 to obtain the calculated direction value for each sector. With reference, the value of the sector number 604 and the value of the direction 608 are acquired from the row in which the confirmed base station name 602 matches “A” (S41).

  Next, when acquiring the design value, the CPU refers to the base station management table 200 and acquires the value of the sector number 204 and the value of the directivity direction 210 from the row where the base station name 202 matches “A”. (S42).

  Next, the CPU sets the sector having the smallest sector number among the confirmed base stations as the reference sector (S43), and calculates the angles of other sectors from the direction of the reference sector (S44). That is, the CPU is the difference between the value of the direction 608 of the reference sector and the value of the direction 608 of the other sector, and the angle of how many times each sector other than the reference sector is deviated clockwise from the reference sector. Is calculated.

  Next, the CPU determines whether or not the direction of the reference sector is smaller than the directions of other sectors (S45). If a positive determination result is obtained in step S45, the CPU calculates an angle as angle = (direction of other sector−direction of reference sector), and proceeds to the process of step S48.

  On the other hand, if a negative determination result is obtained in step S45, the CPU calculates the angle as angle = direction of other sector− (reference sector direction−360) (S47).

  At this time, the CPU compares the direction of the reference sector with the direction of the other sector. If the direction of the other sector is larger than the direction of the reference sector, the CPU determines the direction of the reference sector from the direction of the other sector. If the direction of the other sector is smaller than the direction of the reference sector, the angle is calculated by subtracting the direction of the reference sector obtained by subtracting 360 in advance from the direction of the other sector. calculate.

  Next, in order to calculate the calculated value order, the CPU compares the calculated angles for the other sectors, arranges the sectors in ascending order of the calculated angle, and in order from the sector corresponding to the minimum angle, A number indicating the calculation order is assigned (S48).

  Next, when calculating the design value order, the CPU first sets, as a reference sector, a sector having a sector number indicating a minimum value in the directing direction 210 from the base station management table 200 as a reference sector of the design value. (S49).

  Thereafter, the CPU calculates an angle of another sector from the pointing direction of the reference sector (S50). That is, the CPU calculates an angle of how many times the value of the directivity direction 210 is deviated clockwise from the reference sector for sectors other than the reference.

  Next, the CPU determines whether or not the pointing direction of the reference sector is smaller than the pointing directions of other sectors (S51). If a positive determination result is obtained in step S51, the CPU calculates the angle as angle = (directivity direction of other sector−directivity direction of the reference sector) (S52), and proceeds to the process of step S54.

  On the other hand, if a negative determination result is obtained in step S51, the CPU calculates the angle as angle = directivity direction of another sector− (reference sector directivity direction−360) (S53). That is, the CPU compares the pointing directions of the reference sector and the other sectors, and if the pointing direction of the other sector is larger than the pointing direction of the reference sector, the CPU determines the reference sector of the reference sector from the pointing direction of the other sector. The angle is calculated by subtracting the directivity direction. On the other hand, if the directivity direction of the other sector is smaller than the directivity direction of the reference sector, the directivity of the reference sector obtained by subtracting 360 in advance from the directivity direction of the other sector. The angle is calculated by subtracting the direction.

  Next, when calculating the design value order, the CPU compares the angles for the respective sectors calculated in step S52 or step S53, and arranges them in order from the sector number where the angle indicates the minimum value (S54).

  Next, the CPU determines whether or not the calculated value order calculated in step S48 is equal to the designed value order calculated in step S54 (S55).

  If an affirmative determination result is obtained in step S55, the CPU outputs a determination result of “OK” on the assumption that the calculated value order is the same as the design value order as the determination reference value in the directing order (S56). On the other hand, if a negative determination result is obtained in step S55, it is determined that the calculated value order and the set value order do not match, and the determination result of “NG” is output (S57). The process in is terminated.

  FIG. 14 is a flowchart illustrating processing from collection of handoff data to teleco determination. In FIG. 14, when collecting the handoff information of all base stations, the CPU of the display device 50 collects handoff data recorded in the handoff information management table 400 and also records the base stations recorded in the base station management table 200. Data is collected (S61), individual vector data is created for each sector based on the collected data (S62), and synthesized vector data is created from the created individual vector data (S63). The vectors 351 to 363 are displayed on the display screen based on the vector data and the combined vector data (S64).

  Next, the CPU determines the pointing direction based on the data in the base station management table 200 and the data calculated in step S63, and records the determination result in the determination result management table 700 (S65).

  On the other hand, the CPU determines the orientation order based on the combined vector data created in step S63 and the base station data registered in the base station management table 200, and registers the determination result in the determination result management table 200 (S66). ).

  Next, the CPU determines the teleco state based on the determination result of the pointing direction, the determination result of the pointing order, and the teleco determination mat risk (the pointing direction / directing order determination pattern 1000), and the determination result is stored in the determination result management table. Register (S67), and the processing in this routine is terminated.

  FIG. 15 is a configuration diagram of the determination result management table. In FIG. 15, the determination result management table 900 is a table for managing the determination result of the pointing order for each confirmation base station, and is the confirmation base station name 902, the sector number 904, the direction 906, and the directivity direction 908. And a calculated value order 910, a design value order 912, and a determination 914.

  The confirmed base station name 902 is the same as the confirmed base station name 702, and the sector number 904 is the same as the sector number 704. The direction 906 is the same as the direction 706, and the pointing direction 908 is the same as the pointing direction 210 of the base station management table 200.

  The calculated value order 910 is the number of times the calculated direction 906 is deviated clockwise from the reference sector for each sector other than the reference sector, with the sector having the smallest sector number among the confirmed base stations as the reference sector. Are calculated, the calculated angles are arranged in ascending order, and a natural number starting from 2 is given to the arranged sectors in order. That is, the calculated value order 910 is a value indicating a directing order indicating the order of the direction between the reference sector and the other sectors. For example, the sector number of the reference sector is “1”, the sector numbers of the other two sectors are “2” and “3”, respectively, and the calculation angle of sector 2 is larger than the calculation angle of sector 3 When it is smaller, “2, 3” is stored in the calculated value order 910.

  The design value order 912 is a value indicating a pointing order determination reference value set in advance with respect to the order in the arrangement direction between the reference sector and other sectors. For example, when the sector number of the reference sector is “1” and the sector numbers of the other two sectors are “2” and “3”, respectively, and the sectors are arranged in the sector number order, the design value order 912 Stores “2, 3”.

  The determination 914 is a value indicating a determination result of whether or not the values in the calculated value order 910 and the design value order 912 match. In the determination 914, “OK” is stored when the calculated value order 910 and the design value order 912 match, and “NG” is stored when both do not match.

  FIG. 16 is a configuration diagram for explaining a design state and a teleco state of a three-sector configuration. In FIG. 16A, a three-sector wireless communication device (hereinafter sometimes referred to as a wireless device) and a directional antenna are arranged according to design values and connected according to design values. is there. That is, each wireless device and each directional antenna are arranged and connected in order of sector number. In this case, it is determined to be OK in the direction determination process of the directional antenna, and the coverage areas of the directional antennas in sectors 1, 2, and 3 are as designed.

  On the other hand, in FIG. 16B, the three-sector wireless device and the directional antenna are connected as designed values, but the directional antennas other than the sector 1 directional antenna are designed values. It is arranged at a different position. That is, the directional antenna of sector 2 and the directional antenna of sector 3 are arranged at different positions. In this case, even if the directional antenna direction determination process determines OK, the coverage areas of the directional antennas in sectors 2 and 3 are different from the design values, and the directional antennas in sectors 2 and 3 State 800 is entered.

  In FIG. 16 (c), the three-sector radio and the directional antenna are connected according to the design values, but the directional antennas other than the sector 3 directional antennas are located at positions different from the design values. Has been placed. That is, the directional antenna of sector 1 and the directional antenna of sector 2 are arranged at different positions. In this case, even if the direction determination process of the directional antenna is determined to be OK, the coverage area of the directional antennas in sectors 1 and 2 is an area different from the design value. State 802 is entered.

  In FIG. 16 (d), the three-sector wireless device and the directional antenna are connected as designed values, but the directional antennas other than the sector 2 directional antenna are located at positions different from the designed values. Has been placed. That is, the directional antenna of sector 1 and the directional antenna of sector 3 are arranged at different positions. In this case, even if the directional antenna direction determination process determines OK, the coverage areas of the directional antennas in sectors 1 and 3 are different from the design values, and the directional antennas in sectors 1 and 3 State 803 is entered.

  In FIGS. 16B to 16D, each directional antenna is determined to be NG in the directing order determination process and determined to be OK in the direction determination process, and thus each directional antenna is in the teleco state. It is necessary to determine the combination of the determination result of the pointing order determination process and the determination result of the direction determination process.

  FIG. 17 is another configuration diagram for explaining a design state and a teleco state of a three-sector configuration.

  In FIG. 17 (a), a three-sector wireless device and a directional antenna are arranged according to design values and connected according to design values. That is, each wireless device and each directional antenna are arranged and connected in order of sector number. In this case, it is determined to be OK in the direction determination process of the directional antenna, and the coverage areas of the directional antennas in sectors 1, 2, and 3 are as designed.

  In FIG. 17B, the directional antenna of each sector is arranged at a position different from the design value, and is all connected to each sector of the radio device by shifting one sector clockwise. In this case, the determination process of the directivity direction of each sector is all “NG”, and the determination process of the directivity order of each sector is “OK”. However, in the teleco determination process of each sector, the directivity stability of the sector 1 and the sector 2 is in the teleco state 804, and the directional antenna in the sector 2 and the directional antenna in the sector 3 are in the teleco state 805. . In addition, the directional antenna of sector 3 and the directional antenna of sector 1 are in the teleco state 806.

  In FIG. 17 (c), the directional antenna of each sector is arranged at a position different from the design value, and is all connected to each sector of the radio device by shifting by one sector counterclockwise. In this case, the determination process of the directivity direction of each sector is all “NG”, and the determination process of the directivity order of each sector is “OK”. However, in the teleco determination processing of each sector, the directivity stability of sector 1 and sector 2 is in teleco state 807, and the sector 2 directivity antenna and sector 3 directivity antenna are in teleco state 808. .

  In FIGS. 17B to 17C, each directional antenna is all determined to be NG in the direction determination process, and is determined to be OK in the directivity order determination process. Therefore, each directional antenna is in a teleco state. To determine whether or not there is a combination of the determination result of the direction determination process and the determination result of the pointing order determination process needs to be determined.

  FIG. 18 is a configuration diagram of the determination result management table. In FIG. 18, a determination result management table 1100 is a table for managing a teleco determination result for each base station. The confirmation base station name 1102, a sector number 1104, a direction 1106, a pointing direction 1108, and a pointing It consists of a direction determination 1110, a calculated value order 1112, a design value order 1114, a pointing order determination 1116, and a teleco determination 1118.

  The confirmed base station name 1102 is the same as the confirmed base station name 902, and the sector number 1104 is the same as the sector number 904. The direction 1106 is the same as the direction 906, and the pointing direction 1108 is the same as the pointing direction 908. The pointing direction determination 1110 is the same as the determination 712 in the determination result management table 700.

  The calculated value order 1112 is the same as the calculated value order 910, and the design value order 1114 is the same as the designed value order 912.

  The orientation order determination 1116 is information indicating a determination result of whether or not the calculated value order 1112 and the design value order 1114 match. When the two match, information “OK” is stored. If they do not match, the information of “NG” is stored.

  The teleco-judgment 1118 is information of a judgment result indicating the presence / absence of teleco-judgment based on the directivity direction judgment 1110 and the directing order judgment 1116. In this telescopic determination 1118, a result according to the pattern of the telescopic determination pattern 1030 out of the directivity direction / directing order determination pattern 1000 is stored.

  FIG. 19 is a configuration diagram of the total data management screen. 19, the total data management screen 1200 is a screen used when the user checks the processing status of the total data and saves, displays or deletes the total data using the screen of FIG. Column 1202, searcher ID 1204, setting name 1206, aggregation start date 1208, aggregation start time 1210, aggregation completion date 1212, aggregation completion time 1214, status 1216, data save button 1218, and display button (Figure and data) 1220 and a display button (data only) 1222.

  The check column 1202 stores information regarding whether or not the user is checking. The searcher ID 1204 stores information on an identifier assigned to the user. Thus, by checking the searcher ID, it is possible to find out who is counting, and it is possible to easily find their own counting data.

  The setting name 1206 is the same as the setting name displayed in the setting name display area 313 of FIG. By confirming the setting name, the set collection data can be determined.

  The aggregation start date 1208 displays the date when the aggregation was started and the time when the aggregation was started after setting the aggregation contents. Note that if the aggregation is not started, nothing is displayed on the aggregation start date 1208.

  In the aggregation completion date 1212 and the aggregation completion time 1214, the date when calculation of the aggregation data is completed and the time when the aggregation data is completed are respectively displayed. Nothing is displayed before aggregation starts or during aggregation processing.

  The status 1216 displays the status of the aggregation process. At this time, if the aggregation is not started, the aggregation is awaited, the aggregation process is in progress, the aggregation process is in progress, if the aggregation process is completed, normal termination is completed, and if an error occurs during the aggregation process, an error is displayed. At this time, when the data aggregation is completed, the CPU accepts the operation of the data save button 1218 and accepts the depression of the display button 1220 and the display button 1222.

  At this time, the user can select the storage method of the total result by pressing the displayed button.

  For example, when the user depresses the data storage button 1218, the data is stored in the respective tables.

When the user depresses the display button 1220, vectors 351 to 363 are displayed on the screen and the contents of the determination result management table 1200 are displayed.

  When the user puts a check in the check column 1202 and presses the save button 1224, the checked total data is saved.

  Further, when the user puts a check in the check column 1202 and presses the delete button 1226, the stored total data is deleted.

  In the present embodiment, the CPU of the display device 50 determines the directing order of each directional antenna installed in each base station 20 and 22 based on the calculation result of the direction calculating unit in the first embodiment. To act as a part. In this case, the directivity order determination unit calculates the direction calculated for the reference directional antenna (reference sector) among the plurality of directional antennas installed in the base station to be counted, and the other directional antennas. Based on the difference from the direction calculated for (other sector), the directivity order indicating the order of the arrangement direction between the other directional antennas is calculated with reference to the reference directional antenna, and the calculated directivity order and directivity are calculated. A comparison is made with the order determination reference value, and it is determined whether or not the calculated directivity order matches the directivity order determination reference value.

  The design value order is set as a pointing order determination reference value. At this time, the reference value for determining the order of directivity is based on the difference between the directivity direction of the reference directivity antenna and the directivity direction of each of the other directivity antennas among the directivity antennas installed in the base station to be counted. The set order is a value defined as the order of the arrangement direction between other directional antennas with reference to the directional antenna as a reference.

  According to the present embodiment, it is possible to determine whether or not the directivity order of each directional antenna installed in the base station to be counted is normal.

  In addition, according to the present embodiment, it is determined whether or not each directional antenna is in a teleco state based on a combination of a determination result regarding the direction of each directional antenna and a determination result regarding the directivity order of each directional antenna. can do. For example, if the determination result of the directivity order determination process is affirmative (OK), each directional antenna is determined to be in a normal state except that the determination results of the direction determination process are all negative (NG), When the determination result of the directivity order determination process is negative, it can be determined that each directional antenna is in the teleco state even if the determination result of the direction determination process is affirmative or negative.

  At this time, it is possible to determine whether or not each directional antenna is in a telecoed state with less man-hours, time, and cost without analyzing statistical data or conducting a field survey.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized in hardware by designing some or all of them, for example, with an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function is stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), an IC (Integrated Circuit) card, an SD (Secure Digital) memory card, a DVD ( Digital Versatile Disc) can be recorded and placed.

  DESCRIPTION OF SYMBOLS 10 Gateway apparatus, 20, 22 Base station, 30 Mobile station, 40, 42, 44 Database, 50 Display apparatus, 200 Base station management table, 400 Handoff information management table, 500 Vector data management table, 600 Calculation information management table, 700 Determination result management table, 900 determination result management table, 1100 determination result management table.

Claims (10)

Antenna connection direction detection for detecting the connection direction of the directional antenna based on information recorded in a plurality of wireless base stations that are connected to each other and communicate with a mobile device. A device,
A storage unit for storing base station data including the latitude and longitude of each radio base station and the directivity direction of each directional antenna installed in each radio base station;
A collection unit that collects handoff information indicating communication records between the radio base station to be aggregated and other radio base stations from the radio base station to be aggregated among the plurality of radio base stations,
Based on the handoff information collected by the collection unit and the base station data, the wireless base station to be tabulated is a starting point on the latitude / longitude coordinate axis, and the handoff destination wireless base station is on the latitude / longitude coordinate axis A direction calculation unit that calculates the direction of a vector connecting the start point and the end point as the end point of each directional antenna installed in the aggregation target radio base station;
Each direction calculated by the direction calculation unit is compared with a direction determination reference value set for each directional antenna installed in the radio base station to be counted, and each direction calculated by the direction calculation unit is A direction determination unit that determines whether or not the value is within the range of the direction determination reference value. The antenna connection direction detection device according to claim 1,
A directing order determining unit that determines the directing order of the directional antennas installed in the radio base station to be counted based on the calculation result of the direction calculating unit;
The directing order determination unit
Based on the difference between the direction calculated for the reference directional antenna and the direction calculated for each other directional antenna among the plurality of directional antennas installed in the aggregation target radio base station, A directivity order indicating the order of the arrangement direction between the other directivity antennas is calculated with reference to the reference directivity antenna, the calculated directivity order is compared with a directivity order determination reference value, and the calculated directivity An antenna connection direction detecting apparatus, wherein the order determines whether or not the order matches the pointing order determination reference value. The antenna connection direction detection device according to claim 2,
The pointing order determination reference value is
Of the directional antennas installed in the aggregation target radio base station, the order is set based on the difference between the directional direction of the reference directional antenna and the directional direction of each of the other directional antennas. An antenna connection direction detecting device having a value defined as an order of arrangement direction between the other directional antennas with the directional antenna serving as a reference as a reference. The antenna connection direction detection device according to claim 2,
Based on the determination result of the direction determination unit and the determination result of the directivity order determination unit, a teleco state for determining whether or not each directional antenna and each wireless communication device of the target radio base station are misconnected An antenna connection direction detection apparatus comprising a determination unit. The antenna connection direction detection device according to claim 4,
The telescopic state determination unit
When the determination result of the pointing order determination unit is affirmative, it is determined that each directional antenna of the aggregation target radio base station is in a normal state, except that the determination results of the direction determination unit are all negative. When the determination result of the pointing order determination unit is negative, each directional antenna of the target radio base station is in a teleco state even if the determination result of the direction determination unit is affirmative or negative. An antenna connection direction detection device, characterized in that it is determined that Antenna connection direction detection for detecting the connection direction of the directional antenna based on information recorded in a plurality of wireless base stations that are connected to each other and communicate with a mobile device. A method,
Storing the base station data including the latitude and longitude of each radio base station and the directivity direction of each directional antenna installed in each radio base station;
A collection step of collecting handoff information indicating communication records between the radio base station to be aggregated and other radio base stations from the radio base stations to be aggregated among the plurality of radio base stations,
Based on the handoff information collected in the collecting step and the base station data, the target radio base station is a starting point on the latitude / longitude coordinate axis, and the handoff destination radio base station is on the latitude / longitude coordinate axis. A direction calculating step for calculating a direction of a vector connecting the starting point and the end point for each directional antenna installed in the aggregation target radio base station, as an end point of
Each direction calculated in the direction calculation step is compared with a direction determination reference value set for each directional antenna installed in the radio base station to be counted, and each direction calculated by the direction calculation unit is A direction determination step of determining whether or not the value is within a range of the direction determination reference value. The antenna connection direction detection method according to claim 6,
A directing order determining step for determining the directing order of the directional antennas installed in the radio base station to be counted based on the calculation result in the direction calculating step;
In the directing order determination step,
Based on the difference between the direction calculated for the reference directional antenna and the direction calculated for each other directional antenna among the plurality of directional antennas installed in the aggregation target radio base station, A directivity order indicating the order of the arrangement direction between the other directivity antennas is calculated with reference to the reference directivity antenna, the calculated directivity order is compared with a directivity order determination reference value, and the calculated directivity A method for detecting an antenna connection direction, comprising: determining whether or not the order matches the pointing order determination reference value. The antenna connection direction detection method according to claim 7,
The pointing order determination reference value is
Of the directional antennas installed in the aggregation target radio base station, the order is set based on the difference between the directional direction of the reference directional antenna and the directional direction of each of the other directional antennas. An antenna connection direction detection method having a value defined as an order of arrangement direction between the other directional antennas with the directional antenna as a reference as a reference. The antenna connection direction detection method according to claim 7,
Based on the determination result in the direction determination step and the determination result in the directing order determination step, it is determined whether or not each directional antenna and each wireless communication device of the aggregation target wireless base station are misconnected. An antenna connection direction detection method comprising a teleco state determination step. The antenna connection direction detection method according to claim 9,
In the teleco state determination step,
When the determination result in the directivity order determination step is affirmative, each directional antenna of the target radio base station is in a normal state except that the determination results in the direction determination step are all negative. When the determination result in the directing order determination step is negative, each directional antenna of the radio base station to be counted is determined even if the determination result in the direction determination step is affirmative or negative Is determined to be in the teleco state. A method for detecting an antenna connection direction.