KR100323593B1 - Apparatus for controlling coverage of directional antenna and its method - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling a call coverage of a directional antenna are provided to handle telephone traffic of a particular region in a particular time zone by controlling remotely a direction and an elevation of the directional antenna. CONSTITUTION: An upper and lower projecting section(210) is projected from an upper and lower portion of a rear side of an antenna(200). A left and right direction rotation shaft(220) is combined with the upper and lower projecting section(210) in order to rotate the antenna(200) to a left or a right direction. A left and right direction rotation driver(230) provides rotary power to rotate the left and right direction rotation shaft(220) to the left or the right direction. An upper and lower direction rotation driver(240) provides the rotary power to rotate the left and right direction rotation shaft(220) to the upper or the lower direction. A driving controller(250) controls rotary angles of the left and right direction rotation driver(230) and the upper and lower direction rotation driver(240). A modem(260) is used for transmitting rotary angle signals and data signals or transmitting external control signals to the driving controller(250).

Description

Apparatus for controlling coverage of directional antenna and its method

The present invention relates to an apparatus and a method for controlling a call right of a directional antenna for adjusting a coverage area whenever necessary when installing, adjusting, and operating a directional antenna of a mobile phone base station.

At present, the directional sector antenna installed in the mobile telephone base station has a strong directivity and greatly affects the coverage area according to the elevation angle. Therefore, if the radio wave reaches up to an angle, the call quality and subscriber capacity of neighboring base stations are affected, and if the angle is too low, the coverage area is reduced, and the harmony of each base station is required.

In the installation, adjustment, and operation of the sector antenna, the conventional directional antenna is a first coupling piece 120 for adjusting the left and right angles in the center of the rear, upper, lower, and left and right sides of the directional antenna 110 upright as shown in FIG. 1. The second engaging piece 130 for adjusting the elevation angle is installed, and is fastened to an external support using fastening means such as bolts and nuts. In the related art, the antenna direction, angle, and the like of the above-described structure are adjusted only at the time of installation or at the time of repair, and then fixed in order to adjust the reduction of interference with the coverage area and the adjacent base station.

However, it is required to adjust the azimuth angle of the antenna in consideration of deterioration of the call quality in the area of the traffic volume due to the change of the building topography or the event around the base station, but when using the antenna fixing method as described above, a person directly There was a problem that could not be changed from time to time, because it involves the cumbersome work and the risk of safety accident that must be approached and adjusted.

In addition, since the cellular type mobile telephone system has another base station nearby, the base station location is selected in consideration of the amount of radio interference with the neighboring base station when installing and operating the base station. Consideration should be given. Therefore, when the radio environment changes due to the change of radio environment in the vicinity of the base station, that is, the expansion of neighboring high-rise buildings and the expansion of the base station, etc., the manpower must approach the structure and make new adjustments. At the same time, coordinating the radio wave environment with manpower is virtually unreasonable, and involves a lot of work time, waste of manpower, and safety risks.

Accordingly, the present invention has been made to solve the problems described above, it is possible to remotely adjust the direction and elevation angle of the directional antenna in the place to control the base station to change the environment around the base station and the temporary subscriber increase area SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and method for controlling a call right of a directional antenna capable of adjusting call demand and adjusting interference with neighboring base stations.

1 is an illustration of an antenna structure according to the prior art.

2 is a schematic diagram showing the configuration of a call right control apparatus for a directional antenna according to an embodiment of the present invention.

3 is a block diagram of a mobile communication network using the apparatus of FIG.

4 is a block diagram of a mobile communication network using a call right control apparatus and a signal collection transceiver of a directional antenna according to the present invention;

5A and 5B are exemplary views in which the directional antenna of the present invention is controlled.

6 is a flowchart illustrating a communication right control method of a directional antenna according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

200, 340, 510, 520: antenna 210: protrusion

220: rotating shaft 230: left and right actuator

240: up and down driver 250: drive controller

260: modem 310: operator control interface

320: base station controller 330: base station

400: signal acquisition transceiver

The apparatus of the present invention for achieving the above object, the apparatus for controlling the call right of the directional antenna, the upper and lower protrusions formed to protrude rearward from the upper and lower rear surface of the antenna, respectively; A left and right rotational shaft coupled to the upper and lower protrusions so as to support the antenna so as to rotate in a horizontal direction; A left and right rotational driver for providing a rotational driving force to rotate the left and right rotational shafts in the left and right directions; An up and down rotation driver for providing a rotation driving force to rotate the left and right rotation shafts in an up and down (vertical) direction; A drive controller for controlling rotation angles of the left, right, and up and down rotation drivers according to an external control signal; A modem configured to transmit rotation angle signals of the left and right and up and down rotation drivers and data signals from the drive controller to the outside or receive control signals from the outside and transmit them to the drive controller; And a rotation angle adjusting piece having a predetermined size for further strengthening the coupling between the left and right rotational shaft and the up and down rotational driving period and increasing the up and down rotational force transmission efficiency. It is characterized by adjusting the demand and the degree of interference with neighboring base stations.

The method of the present invention for achieving the above object is, in the directional antenna call range control method applied to the call right control apparatus of the directional antenna, the environment change around the base station, the call demand in the area of the temporary subscriber increase area and the degree of interference with the adjacent base station A first step of measuring transmit power and field strength of the plurality of mobile stations and analyzing the report content of the signal collection transceiver to adjust the < RTI ID = 0.0 > A second step of measuring the number of connection failures of the call connection attempting mobile station in order to expand the antenna coverage of the area where the call volume is small according to the analysis result of the first step; And a third step of adjusting the direction angle and elevation angle of the antenna and updating the radio wave setting environment data according to the measurement result of the second step.

The present invention is to install, adjust, and operate the directional antenna of the mobile phone base station, the place to control the base station by attaching a device that can adjust the antenna direction, elevation angle, etc. in order to adjust the amount of interference with the coverage area and the adjacent base station whenever necessary Remotely automatically or manually control and monitor, and install multiple radio signal collection transceivers in the cell so that the base station controller knows the influence of the controlled antenna angle.

According to the present invention, it is possible to adjust the call area by remotely adjusting the direction and elevation of the antenna in the area of temporary subscriber increase due to changes in building topography, events, etc. around the base station, and it is possible to save labor by avoiding adjustment by manpower. have. In addition, the rapid response by the remote control can accommodate a large amount of calls in a specific time zone, and can reduce the burden of base station station, base station installation site, planning.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic diagram showing the configuration of a call right control apparatus for a directional antenna according to an embodiment of the present invention.

As shown in FIG. 2, the apparatus for controlling the call right of the directional antenna according to an embodiment of the present invention includes an upper and lower protrusions 210 and antennas 200 protruding rearward from upper and lower rear surfaces of the antenna 200, respectively. Left and right rotation to provide rotational driving force to rotate the left and right rotating shaft 220 and the left and right rotating shaft 220 which are fastened to the upper and lower protrusions 210 and the left and right rotating shaft 220 to the left and right (horizontal) directions to be supported to rotate in the horizontal direction. The driver 230, the up and down rotation driver 240 that provides a rotational driving force to rotate the left and right rotation shaft 220 in the vertical direction (vertical) direction, the left and right and up and down rotation drivers 230, 240 according to an external control signal Drive controller 250 for controlling the rotation angle of the control panel and the rotation angle signals of the left and right and up and down rotation drivers 230 and 240 and the data signal from the drive controller 250 to the outside or from the outside. The modem 260 receives the control signal and transmits the control signal to the driving controller 250.

Further, in order to further strengthen the coupling between the left and right rotation shaft 220 and the up and down rotation driver 240 and increase the up and down rotational force transmission efficiency, a rotation angle adjusting piece having a predetermined size may be separately provided.

In addition, the up and down rotation driver 230 and the left and right rotation driver 240 is a step motor that is rotated forward and backward only by a predetermined angle in response to the external signal, one side is mounted on the shaft of the motor and the other side is the rotation shaft And a power transmission reduction gear mounted to the 220, and a rotation amount measuring sensor capable of measuring the amount of rotation in the vertical direction and the amount of rotation in the horizontal direction.

In addition, the left and right rotation drivers 230 are easily coupled to the left and right rotation shaft 220 and in order to provide an optimal rotation force to the left and right rotation shaft 220, the semi-circular housing and the housing are firmly fixed to the left and right rotation shaft 220. A flat rectangular shaft fixing piece is provided for fixing.

Now, the operation of the apparatus for controlling a call right according to the present invention will be described in detail.

First, the drive controller 250, in the installation and adjustment of the directional antenna of the mobile telephone base station, in order to adjust the amount of interference with the coverage area and the adjacent base station whenever necessary, according to the external control signal 230 and the vertical driver The control signal is output to 240.

The left and right drivers 230 and the up and down drivers 240 attached to the rotation shaft 220 provide the left and right and up and down driving force to the left and right rotation shafts 220 to adjust the direction and the elevation angle of the antenna 200.

That is, when the left and right driver 230 which receives the control signal requesting the left and right direction adjustment from the drive controller 250 drives the motor according to the input control signal and rotates the reduction gear installed in the motor, the rotating shaft connected to the reduction gear ( 220 is rotated by the rotational force of the reduction gear to rotate the direction of the antenna 200 fixed to the rotating shaft 220 in the left and right directions.

In addition, when the up and down driver 240 which receives the control signal for the up and down direction adjustment from the drive controller 250 drives the motor according to the input control signal and rotates the reduction gear installed in the motor, the rotating shaft connected to the reduction gear ( 220 is rotated by the rotational force of the reduction gear to rotate the direction of the antenna 200 fixed to the rotating shaft 220 in the vertical direction.

Then, the up and down direction actual rotation amount and the left and right direction actual rotation amount sensor installed in the left and right driver 230 and the vertical driver 240 transmits the value measured after the rotation through the modem 260 to the outside.

This antenna adjustment operation is repeatedly performed until the desired propagation environment is achieved.

3 is a configuration diagram of a mobile communication network using the apparatus of FIG. 2.

As shown in FIG. 3, the mobile communication network includes an operator control interface 310 that provides an interface with an external operator and a base station controller that receives a control signal from the operator control interface 310 and controls a plurality of base stations connected thereto. (BSC: Base Station Controll) 320, a base station (BTS: Base Tranceiver) (330) and the base station (BTS) to adjust the elevation angle and left and right changes of the connected antenna 340 under the control of the base station controller 320 The antenna 340 is provided with a change in the elevation angle and the left and right directions by the 330 to secure a desired call right.

The external operator outputs a control signal necessary for the base station controller 320 through the operator control interface 310 to adjust the desired antenna 340 according to the change in the radio wave environment.

Then, the base station controller 320 outputs a control signal to the base station 330 according to the control signal from the operator, the base station 330 controls the antenna 340 to set the desired propagation environment.

4 is a block diagram of a mobile communication network using a call right control apparatus and a signal collection transceiver of a directional antenna according to the present invention.

As shown in FIG. 4, the mobile communication network is properly interspersed within the coverage area in FIG. 3 and measures the output and the electric field strength of the antenna 340 of the base station 330 to which the base station controller 310 is connected through a wired or wireless connection. And a signal acquisition transceiver 400 for transmitting to the receiver.

Now, the operation of the mobile communication network using the call right control device and the signal collection transceiver of the directional antenna according to the present invention will be described in detail.

First, the signal collection transceiver 400 which receives the transmission signal (field strength, multipath wave, etc.) of the antenna 340 of the neighboring base station 330 scattered in various regions within the service right is information on the reception state of the mobile station side. The data is output to the base station controller 320 through a wired or wireless communication network.

Then, the base station controller 320 analyzes the information signal about the reception state of the signal transmitted from each base station 330 obtained from the signal collection transceiver 400, and the influence according to the setting state of the antenna 340 of the base station 330 ( The results).

In addition, the base station controller 320 may process the influence (result) according to the setting state of the antenna 340 of the base station 330 to represent a field strength map similar to the contour map, which is not a desired state. If it is determined, a control signal for re-adjusting the antenna 340 of each base station 330 is output to the driving controller 250 through the modem 260.

In addition, the driving controller 250 outputs a control signal capable of supplying up, down, left and right rotational forces according to the received control signal to the left and right drivers 230 and the up and down drivers 240.

At this time, the left and right driver 230 and the vertical driver 240 to rotate the rotary shaft 220 by providing a rotational force to the rotary shaft 220 according to the signal received from the drive controller 250, the antenna 400 is the rotary shaft 220 Rotating in accordance with the rotation of) will secure a certain currency.

5A and 5B are exemplary views in which the directional antenna of the present invention is controlled.

As shown in the figure, when the mobile station is concentrated around the first base station, when the elevation angle of the antenna 510 of the first base station is lowered as in the case of FIG. 5B, the coverage of the first base station is reduced and the vicinity of the first base station is reduced. By allowing communication only to the densely populated mobile stations, it is possible to reduce the load burden of the first base station, to provide high quality call quality service, and at the same time, to increase the coverage by increasing the elevation of the antenna 520 of the second base station. The base station can occupy a call right that has been abandoned, and can provide a call to a mobile station that was in the call right of the first base station.

6 is a flowchart illustrating a call right control method of a directional antenna according to an embodiment of the present invention.

As shown in FIG. 6, in the method for controlling a call right of a directional antenna according to an embodiment of the present invention, first, when a base station controller is in a standby state 610 and receives a change in the radio wave setting environment from the outside (611), The transmission output and the electric field strength of the mobile station are analyzed (612) and the report contents of the signal collection transceiver are analyzed (613).

Then, it is determined whether the electric field strength of the mobile stations is smaller than the previous set value (614), and if it is not smaller than the previous set value, repeats from the standby state 610, and if it is smaller than the previous set value, the number of connection failures of the call connection attempted mobile station is determined. It is measured (615).

Next, it is determined whether the number of connection failures of the call connection attempted mobile station is greater than the set value according to the number of connection failures before the change (616), and if it is not larger than the set value, repeats from the standby state 610, and if it is larger than the set value, the antenna The direction angle of (617) is adjusted, and the elevation angle is adjusted (618).

Then, we collect short-term results for the variables that can predict the change in the short term (619), and collect the long-term results for the variables that can be measured in the long term (620). Therefore, after updating the transmission setting of the mobile station which is the radio wave setting environment data and the electric field strength and the number of connection failures of the call connection attempt mobile station (621), the process is repeated from the standby state (610).

According to the present invention as described above, it is possible to adjust the call area by remotely adjusting the direction and elevation angle of the antenna to the area of temporary subscriber increase due to changes in the building topography, events, etc. around the base station, it is possible to avoid the adjustment by manpower labor force Can reduce the cost. In addition, the rapid response by remote control can accommodate a large amount of call in a specific time zone and reduce the burden of base station station, base station installation site, and planning.

In particular, since the cellular type mobile telephone system has another base station in the vicinity, the base station location is selected and various variables are determined in consideration of the amount of radio interference with the neighboring base station when the base station is installed and operated. After all, this should take into account the configuration of all base stations. If the neighboring radio wave environment changes even after the base station is in operation, it is possible to easily adjust the amount of radio interference and coverage for the neighboring base station by remote control. Even if you make a mistake, you can make a new adjustment. As a result, the call quality can be improved.

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

As described above, the present invention can remotely adjust the direction and elevation of the antenna to avoid adjustment by manpower, thereby reducing labor, and enabling rapid response by remote adjustment to changes in the radio wave environment. It is effective in accommodating a large amount of currency in a specific region.

Claims (8)

An apparatus for controlling a call right of a directional antenna, Vertical protrusions formed to protrude rearward from upper and lower rear surfaces of the antenna; A left and right rotational shaft coupled to the upper and lower protrusions so as to support the antenna so as to rotate in a horizontal direction; A left and right rotational driver for providing a rotational driving force to rotate the left and right rotational shafts in the left and right directions; An up and down rotation driver for providing a rotation driving force to rotate the left and right rotation shafts in an up and down (vertical) direction; A drive controller for controlling rotation angles of the left, right, and up and down rotation drivers according to an external control signal; A modem configured to transmit rotation angle signals of the left and right and up and down rotation drivers and data signals from the drive controller to the outside or receive control signals from the outside and transmit them to the drive controller; And It is provided with a rotation angle adjusting piece of a predetermined size for more solidifying the coupling of the left and right rotation axis and the up and down rotation drive period and increase the efficiency of the up and down rotational force transmission, An apparatus for controlling a call right of a directional antenna, characterized by adjusting the environment around the base station, expanding call demand in a temporary subscriber increase area, and adjusting the degree of interference with adjacent base stations. The method of claim 1, The vertical rotation driver and the horizontal rotation driver, respectively A step motor which receives the external signal and rotates forward and backward only by a predetermined angle according to a control signal; A power transmission reduction gear mounted on one side of the shaft of the step motor and the other side of the left and right rotation shafts; And Rotation amount measuring sensor that can measure up and down direction and left and right rotation amount Communication range control device of the directional antenna comprising a. The method according to claim 1 or 2, The left and right rotation drive, A flat rectangular shaft fixing piece which is easily coupled to the left and right rotating shaft and which can secure the semi-circular housing and the housing firmly to the left and right rotating shaft in order to provide an optimum rotational force to the left and right rotating shaft. Communication range control device of the directional antenna comprising a. The method of claim 3, wherein The modem, Rotation angle signals of the left and right and up and down rotational actuators and the drive controller to adjust the call area by remotely adjusting the direction and elevation of the antenna in a temporary subscriber increase area such as a change in the building topography around the base station and an event venue. And a data signal transmitted to the outside or the control signal from the outside is received and transmitted to the driving controller. In the directional antenna call range control method applied to the call right control apparatus of the directional antenna, The first step is to measure the transmission power and field strength of multiple mobile stations and analyze the report contents of the signal collection transceivers in order to adjust the environment around the base station, increase the call demand in the area of temporary subscriber increase and the degree of interference with neighboring base stations. ; A second step of measuring the number of connection failures of the call connection attempting mobile station in order to expand the antenna coverage of the area where the call volume is small according to the analysis result of the first step; And A third step of adjusting the direction angle and elevation angle of the antenna and updating radio wave setting environment data according to the measurement result of the second step Directional antenna coverage control method comprising a. The method of claim 5, The first step is, A fourth step of receiving a radio wave setting environment change from the outside; A fifth step of measuring the mobile station transmission power and electric field strength; And A sixth step of analyzing the report contents of the signal collection transceiver; Call coverage control method of the directional antenna comprising a. The method of claim 6, The second step, A seventh step of determining whether the electric field strengths of the plurality of mobile stations are smaller than a predetermined previous setting value; An eighth step of repeating from the first step if the electric field strength of the mobile stations is not smaller than the predetermined previous setting value as a result of the determination in the seventh step; And As a result of the determination in the seventh step, when the electric field strength of the plurality of mobile stations is smaller than the predetermined previous setting value, the number of connection failures of the call connection attempting mobile station to expand the antenna coverage of the area where the call volume is small where the call volume is large 9th step to measure Call coverage control method of the directional antenna comprising a. The method according to any one of claims 5 to 7, The third step, A tenth step of determining whether the number of connection failures of the call connection attempt mobile station is greater than the predetermined set value according to the number of connection failures; An eleventh step of repeating from the first step if the number of connection failures of the call connection attempting mobile station is not greater than the predetermined set value according to the number of connection failures as a result of the determination in the tenth step; A twelveth step of adjusting a direction angle and an elevation angle of the antenna when the number of connection failures of the call connection attempting mobile station is greater than a set value according to the number of connection failures as a result of the determination in the tenth step; And The thirteenth step of collecting short-term and long-term results and updating the radio wave setting environment data Call coverage control method of the directional antenna comprising a.