JP2012129859A - Radio access network system, remote monitoring device, antenna angle control method, and antenna angle control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform remote adjustment of an antenna angle based on a state of communication quality.SOLUTION: A radio access network system is provided, which comprises: a base station having an external radio terminal device 12 having an antenna for receiving a signal and an internal radio terminal device 13; and a remote monitoring device including antenna angle designation means 402 for generating antenna angle designation data that designates an antenna angle for measuring a BER (Bit Error Rate) value showing communication quality of a received signal and transmitting the data to the base station having the antenna for receiving the signal, and antenna angle determination means 404 for receiving the BER value measured for each angle based on the antenna angle designation data from the base station, determining the antenna angle based on the received BER value, and transmitting the determined antenna angle to the base station.

Description

  The present invention relates to a radio access network system, and more particularly to a radio access network system, a remote monitoring apparatus, an antenna angle control method, and an antenna angle control program for remotely adjusting the angle of an antenna based on the state of communication quality.

  In a data communication system in a radio access network, an antenna angle control method such as a parabolic antenna that transmits and receives data is generally adjusted while monitoring a received electric field level.

  The method of adjusting the angle of the antenna while monitoring the received electric field level is an adjustment method inferred from a general causal relationship that obtains better quality if the electric field level is high. In general, the electric field level is within an adjustable range. The antenna was adjusted to maximize.

  As a related technique, Patent Document 1 discloses a technique for detecting a decrease in communication quality in advance and changing a communication path.

  The technique disclosed in Patent Document 1 detects the appearance of an object that blocks communication on the communication path, and changes the antenna transmission / reception angle before the communication quality deteriorates, thereby reducing the communication quality. Is prevented in advance.

JP 2010-171560 A

  However, since the method of monitoring the received electric field level does not monitor the bit error rate (hereinafter referred to as BER) indicating the communication quality, there is a problem that it is not possible to consider radio interference caused by other radio waves.

  In the method of monitoring the received electric field level, even if the target BER value of the target quality cannot be secured as a result due to the radio wave interference problem, the angle is always adjusted to the maximum electric field. As a result, if it becomes clear that the target communication quality cannot be secured after adjusting the angle of the parabolic antenna, measures other than the angle adjustment of the antenna (changing the operating frequency, etc.) have been taken. For this reason, without verifying whether measures can be taken by adjusting the angle, measures have been taken to generate a lot of costs, such as easy frequency changes, antenna size changes, and special antennas.

  In addition, when radio wave propagation near the river in the basin is required, fading such as morning mist is required, but in the past, an excessive antenna size was selected in consideration of the worst case.

  In addition, the technique described in the cited document 1 does not monitor the communication quality and adjust the antenna to an optimum angle, but detects the presence or absence of a shielding object and adjusts the angle of the antenna. It prevents the decline. For this reason, there is a problem that optimal communication quality cannot be obtained with this method, and radio wave interference or the like cannot be taken into account, as in the method of monitoring the received electric field level.

(Object of invention)
An object of the present invention is to provide a radio access network system, a remote monitoring device, an antenna control method, and an antenna control program that solve the above-described problems and remotely adjust the angle of an antenna based on the state of communication quality.

  A first radio access network system according to the present invention includes an out-of-station radio terminal device including an antenna for receiving a signal, a base station including an in-station radio terminal device, and a BER (Bit Error Rate) indicating communication quality of the received signal. An antenna angle designating unit for generating antenna angle designating data for designating an antenna angle for measuring a value and transmitting it to a base station having an antenna for receiving a signal, and each angle based on the antenna angle designating data from the base station A remote monitoring device including antenna angle determination means for receiving the BER value measured in step (b), determining an antenna angle based on the received BER value, and transmitting the determined antenna angle to the base station.

  An antenna angle control method for a first radio access network system according to the present invention is an antenna angle control method for controlling an antenna angle of a base station of a radio access network system including a base station including an antenna and a remote monitoring device. The remote monitoring device generates antenna angle designation data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmits the antenna angle designation data to the base station equipped with the antenna for receiving the signal. A transmitting step, receiving a BER value measured at each angle based on antenna angle designation data from the base station, determining an antenna angle based on the received BER value, and transmitting the determined antenna angle to the base station Transmitting.

  A first antenna angle control program of the present invention is an antenna angle control program that operates on a radio access network system including a base station including an antenna and a remote monitoring device, and controls the angle of the antenna of the base station. Then, the remote monitoring device generates antenna angle designation data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmits the antenna angle designation data to a base station having an antenna for receiving the signal. And a BER value measured at each angle based on the antenna angle designation data from the base station, determine the antenna angle based on the received BER value, and transmit the determined antenna angle to the base station The process to perform is performed.

  The remote monitoring device of the first radio access network system of the present invention generates antenna angle designation data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating communication quality of a received signal, Antenna angle specifying means for transmitting to a base station equipped with an antenna for receiving the BER value measured at each angle based on the antenna angle specification data from the base station, and the angle of the antenna based on the received BER value. Antenna angle determining means for determining and transmitting the determined angle of the antenna to the base station.

  According to the present invention, the angle of the antenna can be remotely adjusted based on the state of communication quality.

1 is a diagram showing a configuration of a radio access network system 100 according to a first embodiment of the present invention. 1 is a block diagram showing a configuration of a radio access network system 100 according to a first embodiment. It is a flowchart which shows operation | movement of the radio | wireless access network system 100 by 1st Embodiment. It is a block diagram which shows the hardware structural example of the remote monitoring apparatus of this invention.

  Embodiments of the present invention will be described in detail with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

(First embodiment)
A first embodiment of the present invention will be described in detail with reference to the drawings. In the following drawings, the configuration of parts not related to the essence of the present invention is omitted as appropriate and is not shown.

  1 and 2 are a schematic diagram and a block diagram showing a configuration of a radio access network system 100 according to the first embodiment of the present invention.

  1 and 2, a radio access network system 100 according to the present embodiment includes a base station A, a base station B, and a remote monitoring station. In FIG. 2, illustration of the antenna movable devices 11 and 21 and the parabona antennas 10 and 20 is omitted.

  The base station A includes an in-station wireless terminal device 13, an out-of-station wireless terminal device 12, an antenna movable device 11, and a paraboner antenna 10.

  The in-station wireless terminal device 13 includes a transmission / reception unit 131 for communicating with a remote management device (Network Management System (NMS)) 40 or an out-of-station wireless device 141 described below, and a BER for communication with the base station B via the parabolic antenna 10. BER value measuring means 132 for measuring the value.

  The out-of-station wireless device 12 includes a transmission / reception unit 121 that communicates with the in-station wireless device 14 and the antenna movable device, and an antenna adjustment unit 122 that drives the antenna movable device 11 and adjusts the angle of the paraboner antenna 10.

  The parabolic antenna 10 communicates with the parabona antenna 20 of the base station B.

  The base station B includes an in-station wireless terminal device 23, an out-of-station wireless terminal device 22, an antenna movable device 21, and a paraboner antenna 20. Since these are the same as the in-station wireless terminal device 13, the out-of-station wireless terminal device 12, the antenna movable device 11, and the parabona antenna 10 of the base station A, detailed description thereof is omitted.

  The remote monitoring device 40 includes transmission / reception means 401 for communicating with the in-station wireless terminal devices 13 and 23 via the IP network 50, and antenna angle designation means 402 for generating antenna angle designation data for designating an angle for measuring the BER value. And a BER value storage unit 403 that stores a BER value for each angle, and an antenna angle determination unit 404 that determines a final angle based on the BER value.

  The antenna angle designating unit 402 generates antenna angle designating data composed of n × m combinations in the vertical direction (n stages) and the horizontal direction (m stages).

  The antenna angle designation data consists of n × m combinations in the vertical direction (n stages) and the horizontal direction (m stages). The first stage is the minimum driving unit of the antenna movable devices 11 and 21. For example, when the upper two stages and the right three stages are used, the angle control data includes six combinations with respect to the reference position. Note that n and m can be set freely.

  The reference position can be set freely.

  The antenna angle designation data designates a range for measuring the BER value, and the in-station wireless terminal devices 13 and 23 measure the BER value for the range based on the antenna angle designation data.

  Further, when the measurement result of the BER value is transmitted from the in-station wireless terminal devices 13 and 23, the antenna angle designation unit 402 records the BER value for each angle in the BER value storage unit 403. Further, the measurement date and time and other necessary information may be recorded together.

  The antenna angle determination unit 404 determines an angle to be finally adjusted based on the measured BER value, and sends a request for adjusting the angle of the parabona antenna 10 or 20 to the angle via the in-station wireless terminal device 13. To the out-of-office wireless terminal device 12.

(Description of the operation of the first embodiment)
Next, the operation of the radio access network system 100 according to the present embodiment will be described in detail with reference to the drawings.

  FIG. 3 is a flowchart showing the operation of the radio access network system 100 according to the present embodiment.

  In the following, the case of adjusting the parabona antenna 10 of the base station A will be described, but the same applies to the case of adjusting the parabona antenna 20 of the base station B.

  Referring to FIG. 3, first, the antenna angle designation unit 402 generates antenna angle designation data (step S301). The angle specified here is a predetermined range from the reference position of the parabona antenna 10, and this range is set in advance. It is of course possible to designate the entire movable range of the antenna movable device 11.

  Next, the transmission / reception means 401 transmits the antenna angle designation data to the in-station wireless terminal device 13 (step S302).

  When the transmission / reception means 131 receives the antenna angle designation data, a signal indicating that the BER value measurement means 132 adjusts the angle of the parabona antenna 10 to a predetermined angle of the antenna angle designation data (hereinafter referred to as an angle adjustment signal), The data is transmitted to the external radio terminal apparatus 14 via the transmission / reception means 131 (step S303).

  When the transmission / reception unit 121 receives the angle adjustment signal, the antenna adjustment unit 122 adjusts the angle of the parabona antenna 10 based on the signal (step S304).

  Next, the BER value measuring unit 132 measures the BER value at the adjusted angle (step S305).

  When there are a plurality of angles in the antenna angle designation data (when there are a plurality of angle patterns), Steps S303 to S305 are repeated (Step S306).

  When the BER value measuring unit 132 measures the BER values for all angles included in the antenna angle designation data (step S306 “YES”), the measurement result is transmitted to the remote monitoring device 40 via the transmission / reception unit 131 (step S306). S307). The measurement result includes at least antenna angle information, date, and BER value, but is not limited thereto.

  When the transmission / reception unit 401 receives the measurement result of the BER value, the BER value storage unit 403 records the measurement result (step S308).

  Next, the antenna angle determination unit 404 extracts the angle with the best communication quality from the recorded measurement results, and makes a request to the outside radio terminal apparatus 12 to adjust the parabona antenna 10 to the angle. (Step S309).

  Next, the antenna adjustment unit 122 adjusts the angle of the parabona antenna 10 based on the request (step S310).

(Effects of the first embodiment)
Next, the effect of this embodiment will be described.

  According to the present embodiment, since the BER value indicating the communication quality is directly monitored, the angle of the antenna can be adjusted to an angle with the best communication quality in consideration of a radio wave interference failure caused by other radio waves.

  In addition, according to the present embodiment, an instruction for angle adjustment of the antenna can be issued at a remote monitoring station at a remote location, so that the angle can be adjusted without going to the site. For this reason, there is no need to dispatch antenna adjustment workers or ground station personnel, which is effective in reducing costs.

  In addition, in the antenna angle adjustment based on the received electric field value, if a radio wave interference problem occurs, it takes a lot of effort to adjust the angle, so it was usual to take measures by other methods (frequency change) On the other hand, according to the present embodiment, since communication quality data can be automatically acquired for all the movable range (n × m) combinations, it is confirmed whether the interference problem can be solved by adjusting the angle. Can be done at the same time.

  In addition, according to the present embodiment, when radio wave propagation near the river in the basin is necessary, measures are taken in advance when information on occurrence of morning mist is manually / automatically acquired as a fading response such as morning mist. It is possible to improve the communication quality (BER value) by fading by adjusting the antenna to the angle adjustment (n × m) determined as.

  In addition, according to the present embodiment, the angle that is least affected by the periodic time and the fading that occurs in the season is stored as a numerical value, and the numerical value is used to match the time and the season. It is also possible to perform optimum angle adjustment instantly. For this reason, the antenna size can be minimized. The reason is that, until now, the communication quality of the antenna has been calculated at a fixed angle, but the worst condition can be relaxed by the variation of the antenna angle.

  These can be realized by the antenna angle determination unit 404 changing the parabona antenna 10 or 20 to a predetermined angle corresponding to the input of predetermined fading information.

  In this embodiment, both base station A and base station B that transmit and receive data have the same function, but either base station A or base station B has the above-described function. It is good also as a structure to have.

  The transmission / reception means 121, 131, 221, 231 and 401 and the BER value storage means 403 are realized by using existing technology, and the antenna adjustment means 122 (222), BER value measurement means 132 (232), and antenna angle designation. The above-described problems can be solved by the minimum configuration of the means 402 and the antenna angle determination means 404.

  Next, a hardware configuration example of the remote monitoring device 40 of the present invention will be described with reference to FIG. FIG. 4 is a block diagram illustrating a hardware configuration example of the remote monitoring device 40.

  Referring to FIG. 4, the remote monitoring device 40 has a hardware configuration similar to that of a general computer device, and includes a data work area including a memory such as a CPU (Central Processing Unit) 801 and a RAM (Random Access Memory). And a main storage unit 802 used for a temporary data saving area, a communication unit 803 that transmits and receives data via a network, an input / output interface that transmits and receives data by connecting to the input device 805, the output device 806, and the storage device 807 A unit 804 and a system bus 808 for interconnecting the above components. The storage device 807 is realized by, for example, a hard disk device including a non-volatile memory such as a ROM (Read Only Memory), a magnetic disk, and a semiconductor memory.

  The antenna angle designating unit 402 and the antenna angle determining unit 403 of the remote monitoring device 40 of the present invention perform their operations by mounting circuit components that are hardware components such as LSI (Large Scale Integration) incorporating a program. Of course, it is realized by hardware by storing a program providing the function in the storage device 807, loading the program into the main storage unit 802 and executing it by the CPU 801. Is also possible.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not necessarily limited to the above embodiments, and various modifications can be made within the scope of the technical idea. .

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.

  The various components of the present invention do not necessarily have to be independent of each other. A plurality of components are formed as a single member, and a single component is formed of a plurality of members. It may be that a certain component is a part of another component, a part of a certain component overlaps with a part of another component, or the like.

  Moreover, although the several procedure is described in order in the method and computer program of this invention, the order of the description does not limit the order which performs a several procedure. For this reason, when implementing the method and computer program of this invention, the order of the several procedure can be changed in the range which does not interfere in content.

  The plurality of procedures of the method and the computer program of the present invention are not limited to being executed at different timings. For this reason, another procedure may occur during the execution of a certain procedure, or some or all of the execution timing of a certain procedure and the execution timing of another procedure may overlap.

  Further, a part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
An out-of-station wireless terminal device including an antenna for receiving a signal, a base station including an in-station wireless terminal device, and
Antenna angle designating means for generating antenna angle designating data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designating data to a base station having an antenna for receiving the signal; , Receiving the BER value measured at each angle based on the antenna angle designation data from the base station, determining the angle of the antenna based on the received BER value, and determining the determined angle of the antenna A radio access network system comprising: a remote monitoring device including an antenna angle determination means for transmitting to a base station.

(Appendix 2)
The external radio terminal device of the base station includes an antenna adjustment means for adjusting the angle of the antenna,
The in-station wireless terminal device of the base station requests the antenna adjustment means to adjust the angle of the antenna for each angle included in the antenna angle designation data from the remote monitoring device, and receives at the adjusted angle. The wireless access network system according to appendix 1, further comprising: a BER value measuring unit that measures a BER value of the received signal and sends the signal to the antenna angle determining unit.

(Appendix 3)
The antenna angle determining means is
The radio access network system according to appendix 1 or appendix 2, wherein the received angle with the lowest BER value is determined as the angle of the antenna.

(Appendix 4)
When predetermined information about fading, which is a phenomenon in which the reception level of radio waves fluctuates, is input to the remote monitoring device,
The antenna angle determining means is
From the predetermined angle preset for the fading, an angle corresponding to the input predetermined information is selected, and the angle of the selected antenna is transmitted to the base station. The radio access network system according to any one of appendix 3.

(Appendix 5)
An antenna angle control method for controlling an angle of an antenna of the base station of a radio access network system including a base station including an antenna and a remote monitoring device,
The remote monitoring device is
Generating antenna angle designation data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designation data to a base station having an antenna for receiving the signal;
The BER value measured at each angle is received from the base station based on the antenna angle designation data, the antenna angle is determined based on the received BER value, and the determined antenna angle is A method of controlling an antenna angle of a radio access network system, comprising: transmitting to a station.

(Appendix 6)
The base station is
For each angle included in the antenna angle designation data from the remote monitoring device, adjust the angle of the antenna, measure the BER value of the signal received at the adjusted angle and transmit to the remote monitoring device,
6. The antenna angle control method for a radio access network system according to appendix 5, wherein the direction of the antenna is adjusted based on the determined angle of the antenna received from the remote monitoring device.

(Appendix 7)
The remote monitoring device is
7. The radio access network system according to appendix 5 or appendix 6, wherein the received angle with the lowest BER value is determined as the angle of the antenna.

(Appendix 8)
The remote monitoring device is
When predetermined information on fading, which is a phenomenon in which the reception level of radio waves fluctuates, is input, an angle corresponding to the input predetermined information is selected from a predetermined angle set in advance for the fading. The wireless access network system according to any one of appendix 5 to appendix 7, wherein the selected angle of the antenna is transmitted to the base station.

(Appendix 9)
An antenna angle control program that operates on a radio access network system including a base station including an antenna and a remote monitoring device and controls the angle of the antenna of the base station,
In the remote monitoring device,
A process of generating antenna angle designation data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designation data to a base station having an antenna for receiving the signal;
The BER value measured at each angle is received from the base station based on the antenna angle designation data, the antenna angle is determined based on the received BER value, and the determined antenna angle is An antenna angle control program for executing a process of transmitting to a station.

(Appendix 10)
To the base station,
A process of adjusting the angle of the antenna for each angle included in the antenna angle designation data from the remote monitoring device, measuring a BER value of a signal received at the adjusted angle, and transmitting the BER value to the remote monitoring device; ,
10. The antenna angle control program for a radio access network system according to appendix 9, wherein a process of adjusting the direction of the antenna based on the determined angle of the antenna received from the remote monitoring device is executed.

(Appendix 11)
In the remote monitoring device,
11. The radio access network system according to appendix 9 or appendix 10, wherein the process of determining the received angle with the lowest BER value as the angle of the antenna is executed.

(Appendix 12)
In the remote monitoring device,
When predetermined information on fading, which is a phenomenon in which the reception level of radio waves fluctuates, is input, an angle corresponding to the input predetermined information is selected from a predetermined angle set in advance for the fading. The wireless access network system according to any one of appendix 9 to appendix 11, wherein a process of transmitting the selected angle of the antenna to the base station is executed.

(Appendix 13)
Antenna angle designating means for generating antenna angle designating data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designating data to a base station having an antenna for receiving the signal; ,
The BER value measured at each angle is received from the base station based on the antenna angle designation data, the antenna angle is determined based on the received BER value, and the determined antenna angle is An antenna angle determining means for transmitting to a station. A remote monitoring device for a radio access network system, comprising:

DESCRIPTION OF SYMBOLS 100: Radio | wireless access network system 10, 20: Parabona antenna 11, 21: Antenna movable device 12, 22: Out-of-office radio terminal device 13, 23: In-station radio terminal device 30: IP network 40: Remote monitoring device 121,221,131 231 and 401: Transmission / reception means 122 and 222: Antenna adjustment means 132, 232: BER value measurement means 402: Antenna angle designation means 403: BER value storage means 801: CPU
802: Main storage unit 803: Communication unit 804: Input / output interface unit 805: Input device 806: Output device 807: Storage device 808: System bus

Claims (10)

An out-of-station wireless terminal device including an antenna for receiving a signal, a base station including an in-station wireless terminal device, and
Antenna angle designating means for generating antenna angle designating data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designating data to a base station having an antenna for receiving the signal; , Receiving the BER value measured at each angle based on the antenna angle designation data from the base station, determining the angle of the antenna based on the received BER value, and determining the determined angle of the antenna A radio access network system comprising: a remote monitoring device including an antenna angle determination means for transmitting to a base station. The external radio terminal device of the base station includes an antenna adjustment means for adjusting the angle of the antenna,
The in-station wireless terminal device of the base station requests the antenna adjustment means to adjust the angle of the antenna for each angle included in the antenna angle designation data from the remote monitoring device, and receives at the adjusted angle. 2. The radio access network system according to claim 1, further comprising: a BER value measuring unit that measures a BER value of the received signal and sends the measured BER value to the antenna angle determining unit. When predetermined information about fading, which is a phenomenon in which the reception level of radio waves fluctuates, is input to the remote monitoring device,
The antenna angle determining means is
2. The angle corresponding to the inputted predetermined information is selected from predetermined angles set in advance for the fading, and the angle of the selected antenna is transmitted to the base station. Or the radio | wireless access network system of Claim 2. An antenna angle control method for controlling an angle of an antenna of the base station of a radio access network system including a base station including an antenna and a remote monitoring device,
The remote monitoring device is
Generating antenna angle designation data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designation data to a base station having an antenna for receiving the signal;
The BER value measured at each angle is received from the base station based on the antenna angle designation data, the antenna angle is determined based on the received BER value, and the determined antenna angle is A method of controlling an antenna angle of a radio access network system, comprising: transmitting to a station. The base station is
For each angle included in the antenna angle designation data from the remote monitoring device, adjust the angle of the antenna, measure the BER value of the signal received at the adjusted angle and transmit to the remote monitoring device,
5. The antenna angle control method according to claim 4, wherein the direction of the antenna is adjusted based on the determined angle of the antenna received from the remote monitoring device. The remote monitoring device is
When predetermined information on fading, which is a phenomenon in which the reception level of radio waves fluctuates, is input, an angle corresponding to the input predetermined information is selected from a predetermined angle set in advance for the fading. 6. The radio access network system according to claim 4, wherein the selected angle of the antenna is transmitted to the base station. An antenna angle control program that operates on a radio access network system including a base station including an antenna and a remote monitoring device and controls the angle of the antenna of the base station,
In the remote monitoring device,
A process of generating antenna angle designation data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designation data to a base station having an antenna for receiving the signal;
The BER value measured at each angle is received from the base station based on the antenna angle designation data, the antenna angle is determined based on the received BER value, and the determined antenna angle is An antenna angle control program for executing a process of transmitting to a station. To the base station,
A process of adjusting the angle of the antenna for each angle included in the antenna angle designation data from the remote monitoring device, measuring a BER value of a signal received at the adjusted angle, and transmitting the BER value to the remote monitoring device; ,
The antenna angle control program for a radio access network system according to claim 7, wherein a process of adjusting the direction of the antenna based on the determined angle of the antenna received from the remote monitoring device is executed. In the remote monitoring device,
When predetermined information on fading, which is a phenomenon in which the reception level of radio waves fluctuates, is input, an angle corresponding to the input predetermined information is selected from a predetermined angle set in advance for the fading. The radio access network system according to claim 7 or 8, wherein a process of transmitting the selected angle of the antenna to the base station is executed. Antenna angle designating means for generating antenna angle designating data for designating an antenna angle for measuring a BER (Bit Error Rate) value indicating the communication quality of the received signal, and transmitting the antenna angle designating data to a base station having an antenna for receiving the signal; ,
The BER value measured at each angle is received from the base station based on the antenna angle designation data, the antenna angle is determined based on the received BER value, and the determined antenna angle is An antenna angle determining means for transmitting to a station. A remote monitoring device for a radio access network system, comprising:

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