JP2018082223A - Control method of communication system, control device, and control program - Google Patents

Control method of communication system, control device, and control program Download PDF

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JP2018082223A
JP2018082223A JP2016221196A JP2016221196A JP2018082223A JP 2018082223 A JP2018082223 A JP 2018082223A JP 2016221196 A JP2016221196 A JP 2016221196A JP 2016221196 A JP2016221196 A JP 2016221196A JP 2018082223 A JP2018082223 A JP 2018082223A
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quality
communication system
quality information
base station
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JP6672126B2 (en
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隼人 福園
Hayato Fukusono
隼人 福園
吉岡　正文
Masabumi Yoshioka
正文 吉岡
友佑 西尾
Yusuke Nishio
友佑 西尾
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Nippon Telegraph and Telephone Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H01P5/085—Coaxial-line/strip-line transitions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
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    • H01R12/7047—Locking or fixing a connector to a PCB with a fastener through a screw hole in the coupling device
    • H—ELECTRICITY
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    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/75—Coupling devices for rigid printing circuits or like structures connecting to cables except for flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0515—Connection to a rigid planar substrate, e.g. printed circuit board
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0237—High frequency adaptations
    • H05K1/0242—Structural details of individual signal conductors, e.g. related to the skin effect
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0237—High frequency adaptations
    • H05K1/025—Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance
    • H05K1/0253—Impedance adaptations of transmission lines by special lay-out of power planes, e.g. providing openings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
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    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/18—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material
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    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure
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    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
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    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09145—Edge details
    • H05K2201/0919—Exposing inner circuit layers or metal planes at the side edge of the PCB or at the walls of large holes
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    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/0929—Conductive planes
    • H05K2201/093—Layout of power planes, ground planes or power supply conductors, e.g. having special clearance holes therein
    • H—ELECTRICITY
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    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10189—Non-printed connector
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10409—Screws

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  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a control method of a communication system, a control device, and a control program that can prevent the occurrence of interference in the entire system.SOLUTION: A method includes: obtaining quality information indicating quality of a data signal from at least one communication device of each pair in a communication system including pairs of communication devices that transmit data signal at the same frequency; calculating difference between quality information and prescribed quality for each pair; and if there is a pair about which the quality information is less than prescribed quality, controlling transmission power of the data signal within a calculated differential range for pairs of the communication devices about which the quality information is equal to or more than the prescribed quality so that the quality information about the pair about which the quality information is less than the prescribed quality will be equal to or more than the prescribed quality.SELECTED DRAWING: Figure 1

Description

本発明は、通信システム、通信システムの制御方法および通信装置に関する。   The present invention relates to a communication system, a communication system control method, and a communication apparatus.

通信システムには、例えば、ＯＦＤＭ（直交周波数分割多重：Orthogonal Frequency Division Multiplex）等の変調方式を用いて、スマートフォン等の複数の携帯通信端末との間で通信を行うアクセスポイントやセルラ基地局等の基地局間において大量のデータを同一の周波数帯域で伝送するものがある。   The communication system includes, for example, an access point or a cellular base station that communicates with a plurality of mobile communication terminals such as smartphones using a modulation scheme such as OFDM (Orthogonal Frequency Division Multiplex). Some base stations transmit a large amount of data in the same frequency band.

また、基地局が通信を担当するセル内の複数の携帯通信端末へ下り方向の信号を送信する場合、隣接するセルの基地局からの信号との干渉をマルチセルＭＩＭＯ（Multi-Input Multi-Output）を用いて抑制する技術が提案されている（例えば、非特許文献１参照）。   In addition, when a base station transmits a downlink signal to a plurality of mobile communication terminals in a cell in charge of communication, interference with a signal from a base station of an adjacent cell is expressed by multi-cell MIMO (Multi-Input Multi-Output). The technique which suppresses using is proposed (for example, refer nonpatent literature 1).

“D. Gesbert et al., “Multi-cell MIMO cooperative networks: A new look at interference” IEEE Journal on selected areas in communications, Vol. 28, No. 9, pp.1380-1408, December 2010“D. Gesbert et al.,“ Multi-cell MIMO cooperative networks: A new look at interference ”IEEE Journal on selected areas in communications, Vol. 28, No. 9, pp.1380-1408, December 2010

各基地局が同一の周波数帯域でデータを伝送する場合、基地局の数が増加するに従い、基地局間において信号の干渉が発生する確率が増加するため、システム全体における周波数利用効率が劣化するという問題がある。   When each base station transmits data in the same frequency band, as the number of base stations increases, the probability of signal interference occurring between base stations increases, so the frequency utilization efficiency of the entire system deteriorates. There's a problem.

また、マルチセルＭＩＭＯを用いる技術は、基地局から複数の携帯通信端末への下り方向の信号と隣接するセルの基地局からの信号との間の干渉を抑制するものである。すなわち、マルチセルＭＩＭＯの技術は、例えば、複数の携帯通信端末から基地局への上り方向の信号と隣接するセルの基地局からの信号との間の干渉等に対して適用することが困難な場合がある。   The technology using multi-cell MIMO suppresses interference between a downlink signal from a base station to a plurality of mobile communication terminals and a signal from a base station of an adjacent cell. That is, multi-cell MIMO technology is difficult to apply to interference between uplink signals from a plurality of mobile communication terminals to a base station and signals from a base station of an adjacent cell, for example. There is.

本発明は、システム全体における干渉の発生を抑制できる通信システムの制御方法、制御装置および制御プログラムを提供することを目的とする。   An object of the present invention is to provide a communication system control method, control apparatus, and control program that can suppress the occurrence of interference in the entire system.

第１の発明は、同一の周波数帯域でデータ信号を伝送する一対の通信装置を複数組有する通信システムの各組の少なくとも一方の通信装置からデータ信号の品質を示す品質情報を取得し、品質情報と所定の品質との差分を組毎に算出し、品質情報が所定の品質未満の組がある場合、所定の品質未満の組の品質情報が所定の品質以上となるように、品質情報が所定の品質以上の組の通信装置に対して、算出した差分の範囲内でデータ信号の送信電力を制御することを特徴とする。   1st invention acquires the quality information which shows the quality of a data signal from at least one communication apparatus of each set of the communication system which has two or more pairs of communication apparatuses which transmit a data signal in the same frequency band, Quality information For each set, and if there is a set whose quality information is less than the predetermined quality, the quality information is set so that the quality information of the set less than the predetermined quality is equal to or higher than the predetermined quality. The transmission power of the data signal is controlled within the calculated difference range for a set of communication devices of quality or higher.

第２の発明は、第１の発明において、送信電力を制御する処理は、品質情報が所定の品質以上の組の通信装置に対して、算出した差分の範囲内でデータ信号の送信電力を所定量ずつ減少させることを特徴とする。   According to a second aspect, in the first aspect, the process for controlling the transmission power is performed by assigning the transmission power of the data signal within a calculated difference range to a set of communication devices having quality information of a predetermined quality or higher. It is characterized in that it is decreased by a fixed amount.

第３の発明は、第１の発明または第２の発明において、取得した品質情報に含まれるＳＩＮＲ（Signal-to-Interference plus Noise power Ratio）またはＲＳＳＩ（Received Signal Strength Indicator）の値が大きなデータ信号から並べた品質情報とデータ信号の送信電力とを含む一覧をさらに生成し、送信電力を制御する処理は、品質情報が所定の品質以上の組のうち、ＳＩＮＲまたはＲＳＳＩの値が大きなデータ信号を送信する通信装置から順に、算出した差分の範囲内でデータ信号の送信電力を制御することを特徴とする。   According to a third invention, in the first invention or the second invention, a data signal having a large value of SINR (Signal-to-Interference plus Noise power Ratio) or RSSI (Received Signal Strength Indicator) included in the acquired quality information. The process of further generating a list including the quality information arranged from the data signal and the transmission power of the data signal and controlling the transmission power is performed by selecting a data signal having a large SINR or RSSI value from a set whose quality information is equal to or higher than a predetermined quality. The transmission power of the data signal is controlled within the calculated difference range in order from the transmitting communication device.

第４の発明は、第１の発明ないし第３の発明のいずれかにおいて、送信電力を制御する処理は、通信システムが通信システムの周波数帯域と異なる周波数帯域でデータ信号を伝送する他のシステムと隣接して設置され、かつ各組の品質情報が所定の品質以上の場合、他のシステムの周波数帯域と重畳しない範囲内で通信システムの周波数帯域を制御することを特徴とする。   According to a fourth aspect of the present invention, in any one of the first to third aspects, the process for controlling the transmission power includes: a communication system transmitting a data signal in a frequency band different from the frequency band of the communication system; The frequency band of the communication system is controlled within a range that does not overlap with the frequency band of another system when the quality information of each set is higher than a predetermined quality.

第５の発明は、同一の周波数帯域でデータ信号を伝送する一対の通信装置を複数組有する通信システムの各組の少なくとも一方の通信装置からデータ信号の品質を示す品質情報を取得する取得部と、品質情報と所定の品質との差分を組毎に算出する算出部と、品質情報が所定の品質未満の組がある場合、所定の品質未満の組の品質情報が所定の品質以上となるように、品質情報が所定の品質以上の組の通信装置に対して、算出した差分の範囲内でデータ信号の送信電力を制御する制御部とを備えることを特徴とする。   According to a fifth aspect of the present invention, there is provided an acquisition unit that acquires quality information indicating a quality of a data signal from at least one communication device of each set of a communication system having a plurality of pairs of communication devices that transmit data signals in the same frequency band. When there is a calculation unit that calculates the difference between the quality information and the predetermined quality for each pair and a pair whose quality information is less than the predetermined quality, the quality information of the pair that is less than the predetermined quality is equal to or higher than the predetermined quality. And a control unit that controls the transmission power of the data signal within a range of the calculated difference for a set of communication devices having quality information of a predetermined quality or higher.

第６の発明は、同一の周波数帯域でデータ信号を伝送する一対の通信装置を複数組有する通信システムの各組の少なくとも一方の通信装置からデータ信号の品質を示す品質情報を取得し、品質情報と所定の品質との差分を組毎に算出し、品質情報が所定の品質未満の組がある場合、所定の品質未満の組の品質情報が所定の品質以上となるように、品質情報が所定の品質以上の組の通信装置に対して、算出した差分の範囲内でデータ信号の送信電力を制御する処理をコンピュータに実行させることを特徴とする。   6th invention acquires the quality information which shows the quality of a data signal from at least one communication apparatus of each set of the communication system which has multiple sets of a pair of communication apparatus which transmits a data signal in the same frequency band, quality information For each set, and if there is a set whose quality information is less than the predetermined quality, the quality information is set so that the quality information of the set less than the predetermined quality is equal to or higher than the predetermined quality. It is characterized by causing a computer to execute a process for controlling the transmission power of a data signal within a calculated difference range for a set of communication devices of quality equal to or higher than the above.

本発明は、システム全体における干渉の発生を抑制できる。   The present invention can suppress the occurrence of interference in the entire system.

通信システムの一実施形態を示す図である。1 is a diagram illustrating an embodiment of a communication system. 図１に示した制御装置および基地局の一例を示す図である。It is a figure which shows an example of the control apparatus and base station which were shown in FIG. 図２に示した品質テーブルの一例を示す図である。It is a figure which shows an example of the quality table shown in FIG. 図２に示した通信システムＳＹＳにおける制御処理の一例を示す図である。It is a figure which shows an example of the control processing in the communication system SYS shown in FIG. 図４に示した制御処理により更新された品質テーブルの一例を示す図である。It is a figure which shows an example of the quality table updated by the control processing shown in FIG. 図４に示した制御処理により更新された品質テーブルの別例を示す図である。It is a figure which shows another example of the quality table updated by the control processing shown in FIG. 図１に示した通信システムがガードバンドを周波数帯域として利用する場合の一例を示す図である。It is a figure which shows an example in case the communication system shown in FIG. 1 utilizes a guard band as a frequency band.

以下、図面を用いて実施形態について説明する。   Hereinafter, embodiments will be described with reference to the drawings.

図１は、通信システムの一実施形態を示す。   FIG. 1 illustrates one embodiment of a communication system.

図１に示した通信システムＳＹＳは、制御装置１００および４つの基地局ＢＳ（ＢＳ（１）−ＢＳ（４））を有する。   The communication system SYS illustrated in FIG. 1 includes a control device 100 and four base stations BS (BS (1) -BS (4)).

制御装置１００は、例えば、サーバ等のコンピュータ装置であり、ネットワーク等を介して、基地局ＢＳ（１）、ＢＳ（３）に接続される。制御装置１００は、制御装置１００に含まれるハードディスク装置等の記憶装置に記憶される制御プログラムを実行することにより、基地局ＢＳの動作を制御する。制御装置１００の動作については、図２、図４で説明する。   The control device 100 is a computer device such as a server, for example, and is connected to the base stations BS (1) and BS (3) via a network or the like. The control device 100 controls the operation of the base station BS by executing a control program stored in a storage device such as a hard disk device included in the control device 100. The operation of the control device 100 will be described with reference to FIGS.

基地局ＢＳは、例えば、電話線等の物理的な回線の代わりに、音声等のデータを含む信号ｓｉｇ１または信号ｓｉｇ３の電磁波を同一の周波数帯域で送受信する通信装置である。そして、基地局ＢＳ（１）と基地局ＢＳ（２）との一組は、ＯＦＤＭの変調方式でデータを変調した信号ｓｉｇ１を、ＦＤＤ（Frequency Division Duplex）方式で双方向に伝送する。また、基地局ＢＳ（３）と基地局ＢＳ（４）との一組は、ＯＦＤＭの変調方式でデータを変調した信号ｓｉｇ３を、信号ｓｉｇ１と同じ周波数帯域のＦＤＤ方式で双方向に伝送する。そして、基地局ＢＳ（２）および基地局ＢＳ（４）は、端末局として電話線等の回線を介して接続された固定電話機等の通信機器に音声等のデータを出力する。基地局ＢＳの動作については、図２で説明する。信号ｓｉｇ１、ｓｉｇ３は、データ信号の一例である。   The base station BS is a communication device that transmits and receives the electromagnetic waves of the signal sig1 or the signal sig3 including data such as voice in the same frequency band instead of a physical line such as a telephone line. A pair of the base station BS (1) and the base station BS (2) transmits a signal sig1 obtained by modulating data using the OFDM modulation method in both directions using the FDD (Frequency Division Duplex) method. A pair of the base station BS (3) and the base station BS (4) transmits a signal sig3 obtained by modulating data using the OFDM modulation method in both directions using the FDD method in the same frequency band as the signal sig1. Then, the base station BS (2) and the base station BS (4) output data such as voice to a communication device such as a fixed telephone connected as a terminal station via a line such as a telephone line. The operation of the base station BS will be described with reference to FIG. The signals sig1 and sig3 are examples of data signals.

なお、図１に示した通信システムＳＹＳでは、制御装置１００に接続された基地局ＢＳ（１）、ＢＳ（３）を通信システムＳＹＳの上流側とし、基地局ＢＳ（２）、ＢＳ（４）の端末局を通信システムＳＹＳの下流側とする。これにより、基地局ＢＳ（１）から基地局ＢＳ（２）に送信される信号ｓｉｇ１は、“下り方向の信号ｓｉｇ１”とも称され、基地局ＢＳ（２）から基地局ＢＳ（１）に送信される信号ｓｉｇ１は、“上り方向の信号ｓｉｇ１”とも称される。同様に、基地局ＢＳ（３）から基地局ＢＳ（４）に送信される信号ｓｉｇ３は、“下り方向の信号ｓｉｇ３”とも称され、基地局ＢＳ（４）から基地局ＢＳ（３）に送信される信号ｓｉｇ３は、“上り方向の信号ｓｉｇ３”とも称される。   In the communication system SYS shown in FIG. 1, the base stations BS (1) and BS (3) connected to the control device 100 are upstream of the communication system SYS, and the base stations BS (2) and BS (4). Is the downstream side of the communication system SYS. Thereby, the signal sig1 transmitted from the base station BS (1) to the base station BS (2) is also referred to as “downlink signal sig1”, and is transmitted from the base station BS (2) to the base station BS (1). The signal sig1 is also referred to as “upstream signal sig1”. Similarly, the signal sig3 transmitted from the base station BS (3) to the base station BS (4) is also referred to as “downstream signal sig3”, and is transmitted from the base station BS (4) to the base station BS (3). The signal sig3 is also referred to as “upstream signal sig3”.

また、図１に示すように、基地局ＢＳ（２）と基地局ＢＳ（３）との間の距離は、基地局ＢＳ（１）と基地局ＢＳ（２）との間の距離および基地局ＢＳ（３）と基地局ＢＳ（４）との間の距離より短いとする。そして、基地局ＢＳ（２）および基地局ＢＳ（３）は、互いに同じ周波数帯域で信号ｓｉｇ１と信号ｓｉｇ３とをそれぞれ送受信する。このため、基地局ＢＳ（２）は、下り方向の信号ｓｉｇ１とともに下り方向の信号ｓｉｇ３を受信し、基地局ＢＳ（３）は、上り方向の信号ｓｉｇ３とともに上り方向の信号ｓｉｇ１を受信する場合がある。   Further, as shown in FIG. 1, the distance between the base station BS (2) and the base station BS (3) is the distance between the base station BS (1) and the base station BS (2) and the base station. It is assumed that it is shorter than the distance between BS (3) and base station BS (4). Base station BS (2) and base station BS (3) transmit and receive signal sig1 and signal sig3, respectively, in the same frequency band. Therefore, the base station BS (2) may receive the downlink signal sig3 together with the downlink signal sig1, and the base station BS (3) may receive the uplink signal sig1 together with the uplink signal sig3. is there.

なお、基地局ＢＳ（１）−ＢＳ（４）の各々は、例えば、アクセスポイントやセルラ基地局等でもよく、各基地局ＢＳの配下のセル内のスマートフォン等の複数の携帯通信端末との間で無線通信を行ってもよい。   Note that each of the base stations BS (1) to BS (4) may be, for example, an access point, a cellular base station, or the like. Wireless communication may be performed using

また、図１に示した通信システムＳＹＳは、６以上の複数の基地局ＢＳ、すなわち３以上の複数組を有してもよい。また、基地局ＢＳは、信号ｓｉｇ１または信号ｓｉｇ３をＴＤＤ（Time Division Duplex）方式で伝送してもよい。   The communication system SYS illustrated in FIG. 1 may include six or more base stations BS, that is, three or more sets. Further, the base station BS may transmit the signal sig1 or the signal sig3 by a TDD (Time Division Duplex) method.

図２は、図１に示した制御装置１００および基地局ＢＳ（１）の一例を示す。   FIG. 2 shows an example of the control device 100 and the base station BS (1) shown in FIG.

制御装置１００は、例えば、コンピュータ装置であり、制御部１０、記憶部２０およびＩＦ（Interface）部３０を有する。   The control device 100 is, for example, a computer device, and includes a control unit 10, a storage unit 20, and an IF (Interface) unit 30.

制御部１０は、プロセッサ等であり、制御装置１００の記憶部２０に記憶された制御プログラムを実行することで、取得部１１および算出部１２として動作するとともに、制御装置１００の各要素を制御する。   The control unit 10 is a processor or the like, and operates as the acquisition unit 11 and the calculation unit 12 and controls each element of the control device 100 by executing a control program stored in the storage unit 20 of the control device 100. .

取得部１１は、基地局ＢＳ（１）−ＢＳ（４）の各々におけるＳＩＮＲ（Signal-to-Interference plus Noise power Ratio）、ＲＳＳＩ（Received Signal Strength Indicator）および設定されている送信電力を含むデータを取得するための制御指示を、ネットワークＮＷを介して基地局ＢＳ（１）および基地局ＢＳ（３）に送信する。そして、取得部１１は、基地局ＢＳ（１）−ＢＳ（４）のＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを、ネットワークＮＷを介して基地局ＢＳ（１）および基地局ＢＳ（３）から取得する。制御部１０は、取得したＳＩＮＲ、ＲＳＳＩおよび送信電力を用いて品質テーブルＴＬを生成し、生成した品質テーブルＴＬを記憶部２０に記憶する。ＳＩＮＲ、ＲＳＳＩおよび送信電力は、品質情報の一例である。品質テーブルＴＬについては、図３で説明する。   The acquisition unit 11 receives data including SINR (Signal-to-Interference plus Noise power Ratio), RSSI (Received Signal Strength Indicator), and set transmission power in each of the base stations BS (1) -BS (4). A control instruction for acquisition is transmitted to the base station BS (1) and the base station BS (3) via the network NW. And the acquisition part 11 acquires the data of SINR, RSSI, and transmission power of base station BS (1) -BS (4) from base station BS (1) and base station BS (3) via network NW. . The control unit 10 generates a quality table TL using the acquired SINR, RSSI, and transmission power, and stores the generated quality table TL in the storage unit 20. SINR, RSSI, and transmission power are examples of quality information. The quality table TL will be described with reference to FIG.

なお、取得部１１が取得する基地局ＢＳ（２）、ＢＳ（４）の端末局の送信電力については、制御装置１００の制御指示に基づいて、基地局ＢＳ（１）および基地局ＢＳ（３）それぞれが決定した基地局ＢＳ（２）、ＢＳ（４）の送信電力でもよい。   Note that the transmission power of the base stations BS (2) and BS (4) acquired by the acquisition unit 11 is based on the control instruction of the control device 100, and the base station BS (1) and the base station BS (3 ) The transmission power of the base stations BS (2) and BS (4) determined by each may be used.

算出部１２は、例えば、品質テーブルＴＬを記憶部２０から読み出し、読み出した品質テーブルＴＬを用いて、取得した各組のＳＩＮＲから組毎に予め設定されている所定のＳＩＮＲを差し引いた差分を組毎に算出する。所定のＳＩＮＲは、所定の品質の一例である。   For example, the calculation unit 12 reads the quality table TL from the storage unit 20, and uses the read quality table TL to set a difference obtained by subtracting a predetermined SINR preset for each set from the acquired SINR. Calculate every time. The predetermined SINR is an example of predetermined quality.

そして、制御部１０は、例えば、算出された各組の差分を用いて、取得したＳＩＮＲが所定のＳＩＮＲより大きいか否か、すなわち各組の基地局ＢＳにおいて送信電力を引き下げた場合でも所定のＳＩＮＲ以上のＳＩＮＲを達成できる余力を有するか否かを判定する。制御部１０は、余力を有する組の基地局ＢＳに対して、信号ｓｉｇ１または信号ｓｉｇ３の送信電力を所定量減少させる制御指示を出力する。そして、余力を有する組の基地局ＢＳの送信電力を減らすことにより、余力を有する組の基地局ＢＳに隣接する組の基地局ＢＳにおいて、余力を有する組の基地局ＢＳからの信号ｓｉｇ１または信号ｓｉｇ３の受信電力が減り干渉の発生を抑制できる。制御部１０の動作については、図４で説明する。   Then, the control unit 10 uses, for example, the calculated difference between each set to determine whether the acquired SINR is greater than a predetermined SINR, that is, even when the transmission power is reduced in each set of base stations BS. It is determined whether or not there is sufficient capacity to achieve SINR equal to or higher than SINR. The control unit 10 outputs a control instruction for reducing the transmission power of the signal sig1 or the signal sig3 by a predetermined amount to the base station BS having a surplus capacity. Then, by reducing the transmission power of the base station BS having the surplus capacity, the signal sig1 or the signal from the base station BS having the surplus power is set in the base station BS adjacent to the base station BS having the surplus capacity. The reception power of sig3 is reduced and the occurrence of interference can be suppressed. The operation of the control unit 10 will be described with reference to FIG.

記憶部２０は、ハードディスク装置またはメモリ等であり、制御プログラムや品質テーブルＴＬ等を記憶する。   The storage unit 20 is a hard disk device or a memory, and stores a control program, a quality table TL, and the like.

なお、制御プログラムは、例えば、ＤＶＤ（Digital Versatile Disc）等の光ディスクやＵＳＢ（Universal Serial Bus）メモリ等の可搬型記憶媒体に記録して頒布されてもよい。あるいは、制御プログラムは、ＩＦ部３０を介して、ネットワークＮＷ等を通じてダウンロードされ、記憶部２０に格納されてもよい。   The control program may be recorded and distributed on an optical disk such as a DVD (Digital Versatile Disc) or a portable storage medium such as a USB (Universal Serial Bus) memory. Alternatively, the control program may be downloaded through the network NW or the like via the IF unit 30 and stored in the storage unit 20.

ＩＦ部３０は、ネットワークインタフェース等であり、ネットワークＮＷとの間でデータを送受信する。また、ＩＦ部３０は、ネットワークＮＷを介して、各基地局ＢＳのＳＩＮＲ、ＲＳＳＩおよび送信電力を含むデータを、基地局ＢＳ（１）および基地局ＢＳ（３）の各々から受信する。また、ＩＦ部３０は、制御部１０からの制御指示を含む信号を、基地局ＢＳ（１）および基地局ＢＳ（３）に送信する。   The IF unit 30 is a network interface or the like, and transmits / receives data to / from the network NW. The IF unit 30 receives data including the SINR, RSSI, and transmission power of each base station BS from each of the base station BS (1) and the base station BS (3) via the network NW. The IF unit 30 transmits a signal including a control instruction from the control unit 10 to the base station BS (1) and the base station BS (3).

基地局ＢＳ（１）は、アンテナＡＴ、送受信部５０、制御部６０およびＩＦ部７０を有する。なお、基地局ＢＳ（２）−ＢＳ（４）についても、基地局ＢＳ（１）と同様の要素を有する。   The base station BS (1) includes an antenna AT, a transmission / reception unit 50, a control unit 60, and an IF unit 70. Note that the base stations BS (2) -BS (4) also have the same elements as the base station BS (1).

送受信部５０は、例えば、ＩＦ部７０および制御部６０を介して、固定電話機等の通信機器から音声等を含むデータを受信し、受信したデータに対してＯＦＤＭの変調方式で変調し、信号ｓｉｇ１を生成する。送受信部５０は、アンテナＡＴを介して、生成した信号ｓｉｇ１をＦＤＤ方式で基地局ＢＳ（２）に送信する。   The transmission / reception unit 50 receives, for example, data including voice and the like from a communication device such as a fixed telephone via the IF unit 70 and the control unit 60, modulates the received data with an OFDM modulation scheme, and outputs the signal sig1 Is generated. The transmission / reception unit 50 transmits the generated signal sig1 to the base station BS (2) by the FDD method via the antenna AT.

一方、送受信部５０は、アンテナＡＴを介して、基地局ＢＳ（２）により送信された上り方向の信号ｓｉｇ１をＦＤＤ方式で受信し、受信した信号ｓｉｇ１に対してＯＦＤＭの復調処理を実行し、復調したデータを制御部６０に出力する。また、送受信部５０は、例えば、受信した信号ｓｉｇ１のＳＩＮＲおよびＲＳＳＩを測定する機能を有し、測定したＳＩＮＲおよびＲＳＳＩの値を制御部６０に出力する。   On the other hand, the transmission / reception unit 50 receives the uplink signal sig1 transmitted by the base station BS (2) via the antenna AT in the FDD scheme, and performs OFDM demodulation processing on the received signal sig1. The demodulated data is output to the control unit 60. In addition, the transmission / reception unit 50 has a function of measuring the SINR and RSSI of the received signal sig1, for example, and outputs the measured SINR and RSSI values to the control unit 60.

制御部６０は、プロセッサ等であり、基地局ＢＳ（１）に含まれるメモリ等の記憶装置に記憶されたプログラムを実行することで、基地局ＢＳ（１）の各要素を制御する。   The control unit 60 is a processor or the like, and controls each element of the base station BS (1) by executing a program stored in a storage device such as a memory included in the base station BS (1).

制御部６０は、例えば、基地局ＢＳ（１）の送信電力を所定量減少させる制御指示を制御装置１００から受信した場合、設定されている送信電力から所定量減少させた送信電力を、基地局ＢＳ（１）に設定する。また、制御部６０は、基地局ＢＳ（２）の送信電力を所定量減少させる制御指示を制御装置１００から受信した場合、基地局ＢＳ（２）に設定した送信電力から所定量を減少させた送信電力を、基地局ＢＳ（２）の新たな送信電力として決定する。そして、制御部６０は、送受信部５０を介して、決定した送信電力を含む信号ｓｉｇ１を基地局ＢＳ（２）に送信し、基地局ＢＳ（２）に対して決定した送信電力を設定させる。   For example, when the control unit 60 receives a control instruction for reducing the transmission power of the base station BS (1) by a predetermined amount from the control device 100, the control unit 60 sets the transmission power reduced by the predetermined amount from the set transmission power to the base station. Set to BS (1). In addition, when the control unit 60 receives a control instruction to decrease the transmission power of the base station BS (2) from the control device 100, the control unit 60 decreases the predetermined amount from the transmission power set in the base station BS (2). The transmission power is determined as a new transmission power of the base station BS (2). And the control part 60 transmits signal sig1 containing the determined transmission power to base station BS (2) via the transmission / reception part 50, and sets the determined transmission power with respect to base station BS (2).

また、制御部６０は、ＳＩＮＲ等を取得する制御指示を制御装置１００から受信した場合、送受信部５０により測定された信号ｓｉｇ１のＳＩＮＲおよびＲＳＳＩ、および基地局ＢＳ（１）の送信電力のデータを、ネットワークＮＷを介して制御装置１００に送信する。また、制御部６０は、基地局ＢＳ（２）のＳＩＮＲ、ＲＳＳＩおよび送信電力を取得する指示を含む信号ｓｉｇ１を、送受信部５０を介して基地局ＢＳ（２）に送信する。そして、制御部６０は、基地局ＢＳ（２）から受信した上り方向の信号ｓｉｇ１に含まれる基地局ＢＳ（２）のＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを制御装置１００に送信する。   In addition, when the control unit 60 receives a control instruction for acquiring SINR or the like from the control device 100, the control unit 60 obtains the SINR and RSSI of the signal sig1 measured by the transmission / reception unit 50 and the transmission power data of the base station BS (1). And transmitted to the control device 100 via the network NW. Moreover, the control part 60 transmits signal sig1 containing the instruction | indication which acquires SINR, RSSI, and transmission power of base station BS (2) to base station BS (2) via the transmission / reception part 50. Then, the control unit 60 transmits the SINR, RSSI, and transmission power data of the base station BS (2) included in the uplink signal sig1 received from the base station BS (2) to the control device 100.

なお、制御部６０は、基地局ＢＳ（２）からＳＩＮＲおよびＲＳＳＩを取得する代わりに、基地局ＢＳ（２）のＳＩＮＲおよびＲＳＳＩを推定してもよい。例えば、制御部６０は、基地局ＢＳ（２）に設定している送信電力と、送受信部５０が測定したＳＩＮＲおよびＲＳＳＩとを用いて、基地局ＢＳ（１）と基地局ＢＳ（２）との間の伝搬路における信号ｓｉｇ１の伝搬損失を算出する。そして、制御部６０は、算出した伝搬損失と、基地局ＢＳ（１）の送信電力とを用いて、基地局ＢＳ（２）におけるＳＩＮＲおよびＲＳＳＩを推定する。制御部６０は、推定した基地局ＢＳ（２）のＳＩＮＲおよびＲＳＳＩを、基地局ＢＳ（２）に設定している送信電力とともに制御装置１００に送信してもよい。   Note that the control unit 60 may estimate the SINR and RSSI of the base station BS (2) instead of acquiring the SINR and RSSI from the base station BS (2). For example, the control unit 60 uses the transmission power set in the base station BS (2), the SINR and RSSI measured by the transmission / reception unit 50, and the base station BS (1), the base station BS (2), The propagation loss of the signal sig1 in the propagation path between is calculated. And the control part 60 estimates SINR and RSSI in base station BS (2) using the calculated propagation loss and transmission power of base station BS (1). The control unit 60 may transmit the estimated SINR and RSSI of the base station BS (2) to the control apparatus 100 together with the transmission power set in the base station BS (2).

ＩＦ部７０は、例えば、入出力インタフェースまたはネットワークインタフェース等であり、ネットワークＮＷを介して制御装置１００との間でデータを送受信する。また、ＩＦ部７０は、電話線等の回線を用いて１または複数の固定電話機等の通信機器と接続され、各通信機器との間で音声等のデータを送受信する。   The IF unit 70 is, for example, an input / output interface or a network interface, and transmits / receives data to / from the control device 100 via the network NW. The IF unit 70 is connected to one or a plurality of communication devices such as a fixed telephone using a line such as a telephone line, and transmits / receives data such as voice to / from each communication device.

図３は、図２に示した品質テーブルＴＬの一例を示す。品質テーブルＴＬは、信号の領域と、最低受信感度の領域と、送信電力の領域と、所定ＳＩＮＲの領域と、ＲＳＳＩの領域と、ＳＩＮＲの領域とをそれぞれ含む複数のエントリーを有する。信号の領域には、例えば、“ｓｉｇ１（上り）”等のように各組の基地局ＢＳが伝送する信号を識別する情報と、伝搬方向を示す情報とが格納される。   FIG. 3 shows an example of the quality table TL shown in FIG. The quality table TL has a plurality of entries each including a signal area, a minimum reception sensitivity area, a transmission power area, a predetermined SINR area, an RSSI area, and an SINR area. In the signal area, for example, information for identifying a signal transmitted by each set of base stations BS, such as “sig1 (uplink)”, and information indicating a propagation direction are stored.

なお、制御装置１００の制御部１０は、例えば、ＲＳＳＩおよびＳＩＮＲの領域に格納されるＲＳＳＩまたはＳＩＮＲの値が大きい、すなわち通信環境が良好で、他の組からの信号の干渉による影響が小さい信号から信号の領域に格納する。   Note that the control unit 10 of the control device 100 has, for example, a signal with a large RSSI or SINR value stored in the RSSI and SINR regions, that is, a good communication environment and a small influence due to signal interference from another set To the signal area.

最低受信感度の領域には、各組の基地局ＢＳに要求される最低の受信感度の値が格納される。なお、最低受信感度の領域に格納される値は、例えば、制御装置１００に含まれるキーボード等の入力装置を用いて、通信システムＳＹＳの管理者等による入力操作により予め入力されることが好ましい。   In the area of minimum reception sensitivity, a value of minimum reception sensitivity required for each set of base stations BS is stored. It should be noted that the value stored in the area of minimum reception sensitivity is preferably input in advance by an input operation by an administrator of the communication system SYS or the like using an input device such as a keyboard included in the control device 100, for example.

送信電力の領域には、信号の領域に格納される信号を送信する基地局ＢＳに設定されている送信電力が格納される。所定ＳＩＮＲの領域には、信号の領域に格納される信号に対して要求される品質を示す所定のＳＩＮＲの値が格納される。なお、所定ＳＩＮＲの領域に格納される値は、例えば、制御装置１００の入力装置を用いて、通信システムＳＹＳの管理者等による入力操作により予め入力されることが好ましい。   In the transmission power area, the transmission power set in the base station BS that transmits the signal stored in the signal area is stored. In the predetermined SINR area, a predetermined SINR value indicating the quality required for the signal stored in the signal area is stored. Note that the value stored in the predetermined SINR area is preferably input in advance by an input operation by an administrator of the communication system SYS using the input device of the control device 100, for example.

ＲＳＳＩおよびＳＩＮＲの領域には、信号の領域に格納される信号を受信した基地局ＢＳの送受信部５０が測定したＲＳＳＩおよびＳＩＮＲの値が格納される。   The RSSI and SINR areas store the RSSI and SINR values measured by the transceiver 50 of the base station BS that has received the signal stored in the signal area.

図４は、図２に示した通信システムＳＹＳにおける制御処理の一例を示す。図４に示した処理は、制御装置１００が基地局ＢＳ（１）、ＢＳ（２）の組に対して制御処理を実行する場合を示す。すなわち、図４に示した処理は、通信システムの制御方法および制御プログラムの一実施形態である。なお、制御装置１００が基地局ＢＳ（３）、ＢＳ（４）の組に対して制御処理を実行する場合についても、図４と同様の処理が実行される。   FIG. 4 shows an example of control processing in the communication system SYS shown in FIG. The process shown in FIG. 4 shows a case where the control apparatus 100 executes a control process for a set of base stations BS (1) and BS (2). That is, the process shown in FIG. 4 is an embodiment of a control method and control program for a communication system. Note that the same processing as in FIG. 4 is also executed when the control device 100 executes control processing for a set of base stations BS (3) and BS (4).

ステップＳ１００では、取得部１１は、各基地局ＢＳにおけるＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを取得するための制御指示を、ネットワークＮＷを介して基地局ＢＳ（１）および基地局ＢＳ（３）にそれぞれ送信する。   In step S100, the acquisition unit 11 sends control instructions for acquiring SINR, RSSI, and transmission power data in each base station BS to the base station BS (1) and the base station BS (3) via the network NW. Send each one.

次に、ステップＳ１１０では、取得部１１は、ステップＳ１００で送信した制御指示に対する各基地局ＢＳのＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを、ネットワークＮＷを介して基地局ＢＳ（１）および基地局ＢＳ（３）からそれぞれ受信する。そして、制御部１０は、受信した各基地局ＢＳのＳＩＮＲ、ＲＳＳＩおよび送信電力を用いて、図３に示した品質テーブルＴＬを生成し、生成した品質テーブルＴＬを記憶部２０に記憶する。   Next, in step S110, the acquisition unit 11 acquires the SINR, RSSI, and transmission power data of each base station BS corresponding to the control instruction transmitted in step S100, via the network NW, the base station BS (1) and the base station BS. Receiving from (3). Then, the control unit 10 generates the quality table TL illustrated in FIG. 3 using the received SINR, RSSI, and transmission power of each base station BS, and stores the generated quality table TL in the storage unit 20.

次に、ステップＳ１２０では、算出部１２は、ステップＳ１１０で生成された品質テーブルＴＬを記憶部２０から読み出す。そして、算出部１２は、読み出した品質テーブルＴＬのＳＩＮＲの領域に格納されたＳＩＮＲから、所定ＳＩＮＲの領域に格納された所定のＳＩＮＲを減算した差分を、信号の領域に格納された信号毎に算出する。   Next, in step S120, the calculation unit 12 reads the quality table TL generated in step S110 from the storage unit 20. Then, the calculation unit 12 calculates, for each signal stored in the signal area, a difference obtained by subtracting the predetermined SINR stored in the predetermined SINR area from the SINR stored in the SINR area of the read quality table TL. calculate.

次に、ステップＳ１３０では、制御部１０は、品質テーブルＴＬのうち１番目の列に格納された信号を伝送する基地局ＢＳの組から順に処理対象の組とする。そして、制御部１０は、ステップＳ１２０で算出された差分に基づいて、処理対象の組の基地局ＢＳに設定された送信電力から１ｄＢ等の所定量を引き下げた場合でも所定のＳＩＮＲ以上のＳＩＮＲの余力を有するか否かを判定する。   Next, in step S130, the control unit 10 sets the processing target sets in order from the set of base stations BS that transmit the signals stored in the first column of the quality table TL. Based on the difference calculated in step S120, the control unit 10 has an SINR equal to or higher than the predetermined SINR even when a predetermined amount such as 1 dB is reduced from the transmission power set in the base station BS of the processing target set. It is determined whether there is a surplus.

例えば、図３に示した品質テーブルＴＬにおいて、信号の領域に“ｓｉｇ１（上り）”が格納された上り方向の信号ｓｉｇ１の場合、ＳＩＮＲの領域に格納された基地局ＢＳ（１）のＳＩＮＲは、２５ｄＢであり、所定ＳＩＮＲの領域に格納された所定のＳＩＮＲは、１５ｄＢである。すなわち、ＳＩＮＲの差分は、＋１０ｄＢとなる。この場合、例えば、上り方向の信号ｓｉｇ１を送信する基地局ＢＳ（２）の送信電力を１ｄＢの所定量引き下げた場合でも、基地局ＢＳ（１）におけるＳＩＮＲは２４ｄＢとなる。すなわち、基地局ＢＳ（２）は、所定のＳＩＮＲ以上を達成できる余力を有することを示す。このように、処理対象の組の基地局ＢＳにＳＩＮＲの余力がある場合、制御装置１００の処理は、ステップＳ１４０の処理に移る。   For example, in the quality table TL shown in FIG. 3, in the case of an uplink signal sig1 in which “sig1 (uplink)” is stored in the signal area, the SINR of the base station BS (1) stored in the SINR area is 25 dB, and the predetermined SINR stored in the predetermined SINR area is 15 dB. That is, the SINR difference is +10 dB. In this case, for example, even if the transmission power of the base station BS (2) that transmits the upstream signal sig1 is reduced by a predetermined amount of 1 dB, the SINR in the base station BS (1) is 24 dB. That is, the base station BS (2) indicates that it has a capacity capable of achieving a predetermined SINR or more. Thus, when the base station BS of the set to be processed has the SINR capacity, the processing of the control device 100 proceeds to the processing of step S140.

一方、例えば、信号の領域に“ｓｉｇ３（上り）”が格納された３番目の列の上り方向の信号ｓｉｇ３の場合、ＳＩＮＲの領域に格納された基地局ＢＳ（４）におけるＳＩＮＲは、２０ｄＢであり、所定ＳＩＮＲの領域に格納された所定のＳＩＮＲは、２０ｄＢである。すなわち、ＳＩＮＲの差分は、０ｄＢとなる。この場合、上り方向の信号ｓｉｇ３を送信する基地局ＢＳ（４）の送信電力を１ｄＢの所定量引き下げた場合、基地局ＢＳ（３）におけるＳＩＮＲは１９ｄＢとなり、所定のＳＩＮＲ未満となる。すなわち、基地局ＢＳ（４）は、所定のＳＩＮＲ以上を達成できる余力がないことを示す。このように、処理対象の組の基地局ＢＳにＳＩＮＲの余力がない場合、制御装置１００の処理は、ステップＳ１８０に移る。   On the other hand, for example, in the case of the uplink signal sig3 in the third column in which “sig3 (uplink)” is stored in the signal area, the SINR in the base station BS (4) stored in the SINR area is 20 dB. Yes, the predetermined SINR stored in the predetermined SINR area is 20 dB. That is, the SINR difference is 0 dB. In this case, when the transmission power of the base station BS (4) that transmits the upstream signal sig3 is reduced by a predetermined amount of 1 dB, the SINR in the base station BS (3) is 19 dB, which is less than the predetermined SINR. That is, the base station BS (4) indicates that there is no capacity to achieve a predetermined SINR or more. As described above, when there is no SINR remaining capacity in the base station BS of the processing target group, the processing of the control device 100 proceeds to step S180.

なお、所定量は、基地局ＢＳが設置される場所や、通信システムＳＹＳに要求される通信の品質や処理能力等に基づいて、ステップＳ１２０で算出されたＳＩＮＲの差分の範囲内で適宜設定されることが好ましい。   The predetermined amount is appropriately set within the range of the SINR difference calculated in step S120 based on the location where the base station BS is installed, the communication quality and processing capability required for the communication system SYS, and the like. It is preferable.

ステップＳ１４０では、制御部１０は、品質テーブルＴＬのうちＳＩＮＲの領域に格納されたＳＩＮＲの値が、所定ＳＩＮＲ領域に格納された所定のＳＩＮＲ未満、すなわちステップＳ１２０で算出された差分が負の値となる基地局ＢＳがあるか否かを判定する。   In step S140, the control unit 10 determines that the SINR value stored in the SINR area of the quality table TL is less than the predetermined SINR stored in the predetermined SINR area, that is, the difference calculated in step S120 is a negative value. It is determined whether or not there is a base station BS.

例えば、図３に示した品質テーブルＴＬにおいて、信号の領域に“ｓｉｇ３（下り）”が格納された４番目の列の下り方向の信号ｓｉｇ３の場合、基地局ＢＳ（３）におけるＳＩＮＲは、１０ｄＢであり、所定ＳＩＮＲの領域に格納された所定のＳＩＮＲの２０ｄＢより小さい値を示す。この場合、図１に示した通信システムＳＹＳにおいて、基地局ＢＳ（２）と基地局ＢＳ（３）との間の距離が他の基地局ＢＳとの距離と比べて短いことから、制御部１０は、例えば、基地局ＢＳ（２）が送信する上り方向の信号ｓｉｇ１が基地局ＢＳ（３）に漏れ込み、干渉が発生していると判定する。そして、ＳＩＮＲが所定ＳＩＮＲ未満となる基地局ＢＳがある場合、制御装置１００の処理は、ステップＳ１５０に移る。   For example, in the quality table TL shown in FIG. 3, in the case of the fourth column downlink signal sig3 in which “sig3 (downlink)” is stored in the signal area, the SINR in the base station BS (3) is 10 dB. And a value smaller than 20 dB of the predetermined SINR stored in the area of the predetermined SINR. In this case, in the communication system SYS shown in FIG. 1, since the distance between the base station BS (2) and the base station BS (3) is shorter than the distance to the other base stations BS, the control unit 10 For example, it is determined that an uplink signal sig1 transmitted by the base station BS (2) leaks into the base station BS (3) and interference occurs. When there is a base station BS whose SINR is less than the predetermined SINR, the process of the control device 100 proceeds to step S150.

一方、ＳＩＮＲが所定のＳＩＮＲ未満となる基地局ＢＳがない場合、制御部１０は、全ての基地局ＢＳの組において送信電力が適切に設定されていると判断する。この場合、制御装置１００の処理は、ステップＳ１８０に移る。   On the other hand, when there is no base station BS whose SINR is less than the predetermined SINR, the control unit 10 determines that the transmission power is appropriately set in the set of all base stations BS. In this case, the process of the control device 100 moves to step S180.

ステップＳ１５０では、制御部１０は、所定のＳＩＮＲ以上を示す処理対象の組の基地局ＢＳに対して、所定量減少させた送信電力を設定させる制御指示を、ネットワークＮＷを介して基地局ＢＳ（１）に送信する。   In step S150, the control unit 10 sends a control instruction for setting the transmission power reduced by a predetermined amount to the base stations BS to be processed that exhibit a predetermined SINR or higher via the network NW. To 1).

次に、ステップＳ１６０では、取得部１１は、ステップＳ１５０の処理後における各基地局ＢＳのＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを再取得するための制御指示を、ネットワークＮＷを介して基地局ＢＳ（１）および基地局ＢＳ（３）にそれぞれ送信する。   Next, in step S160, the acquisition unit 11 sends a control instruction for reacquiring SINR, RSSI, and transmission power data of each base station BS after the processing in step S150 via the network NW. 1) and the base station BS (3), respectively.

次に、ステップＳ１７０では、取得部１１は、ステップＳ１６０で送信した制御指示に対する各基地局ＢＳのＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを、ネットワークＮＷを介して基地局ＢＳ（１）および基地局ＢＳ（３）からそれぞれ受信する。そして、制御部１０は、受信した各基地局ＢＳのＳＩＮＲ、ＲＳＳＩおよび送信電力を、図３に示した品質テーブルＴＬの送信電力、ＲＳＳＩおよびＳＩＮＲの領域に格納し更新する。この場合、制御装置１００の処理は、ステップＳ１２０に移る。   Next, in step S170, the acquisition unit 11 receives the SINR, RSSI, and transmission power data of each base station BS corresponding to the control instruction transmitted in step S160 via the network NW, the base station BS (1) and the base station BS. Receiving from (3). Then, the control unit 10 stores and updates the received SINR, RSSI and transmission power of each base station BS in the areas of the transmission power, RSSI and SINR of the quality table TL shown in FIG. In this case, the process of the control device 100 moves to step S120.

ステップＳ１８０では、制御部１０は、次の処理対象があるか否かを判定する。次の処理対象がある場合、制御装置１００の処理は、ステップＳ１３０に移る。一方、次の処理対象がない場合、制御装置１００は制御処理を終了する。そして、制御装置１００は、通信システムＳＹＳに新たな基地局ＢＳの組が設置される、あるいは制御装置１００の入力装置を介して管理者等からの制御指示を受けた等の場合に、ステップＳ１００からステップＳ１８０の処理を実行する。   In step S180, the control unit 10 determines whether there is a next processing target. If there is a next processing target, the processing of the control device 100 proceeds to step S130. On the other hand, if there is no next processing target, the control device 100 ends the control processing. Then, when a new set of base stations BS is installed in the communication system SYS or when the control device 100 receives a control instruction from an administrator or the like via the input device of the control device 100, the control device 100 performs step S100. To Step S180.

一方、ステップＳ２００では、基地局ＢＳ（１）の制御部６０は、ステップＳ１００で制御装置１００により送信された制御指示に基づいて、基地局ＢＳ（１）、ＢＳ（２）のＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを含む信号を、ネットワークＮＷを介して制御装置１００に送信する。   On the other hand, in step S200, the control unit 60 of the base station BS (1), based on the control instruction transmitted by the control device 100 in step S100, the SINR, RSSI and the base stations BS (1) and BS (2) A signal including transmission power data is transmitted to the control device 100 via the network NW.

次に、ステップＳ２１０では、制御部６０は、ステップＳ１５０で制御装置１００により送信された制御指示に基づいて、基地局ＢＳ（１）または基地局ＢＳ（２）に設定されている送信電力から所定量を減少させた値を、新たな送信電力として決定する。   Next, in step S210, the control unit 60 calculates the transmission power set in the base station BS (1) or base station BS (2) based on the control instruction transmitted by the control device 100 in step S150. A value obtained by decreasing the fixed amount is determined as new transmission power.

なお、制御部６０は、ステップＳ１５０で制御装置１００により送信された制御指示に基づいて、同じ組の基地局ＢＳ（１）、ＢＳ（２）の送信電力を所定量減少させてもよい。   Note that the control unit 60 may reduce the transmission power of the same set of base stations BS (1) and BS (2) by a predetermined amount based on the control instruction transmitted by the control device 100 in step S150.

次に、ステップＳ２２０では、制御部６０は、ステップＳ２１０で決定した送信電力を基地局ＢＳ（２）に設定させる制御指示を含む信号ｓｉｇ１を、送受信部５０を介して基地局ＢＳ（２）に送信する。なお、ステップＳ２１０で決定した送信電力が基地局ＢＳ（１）に対するものである場合、制御部６０は、基地局ＢＳ（１）に設定する。   Next, in step S220, the control unit 60 sends a signal sig1 including a control instruction for setting the transmission power determined in step S210 to the base station BS (2) to the base station BS (2) via the transmission / reception unit 50. Send. When the transmission power determined in step S210 is for the base station BS (1), the control unit 60 sets the base station BS (1).

次に、ステップＳ２３０では、制御部６０は、ステップＳ１６０で制御装置１００により送信された制御指示に基づいて、基地局ＢＳ（１）、ＢＳ（２）のＳＩＮＲ、ＲＳＳＩおよび送信電力のデータを含む信号を、ネットワークＮＷを介して制御装置１００に送信する。基地局ＢＳ（１）は、制御処理を終了する。   Next, in step S230, the control unit 60 includes the SINR, RSSI, and transmission power data of the base stations BS (1) and BS (2) based on the control instruction transmitted by the control device 100 in step S160. The signal is transmitted to the control device 100 via the network NW. The base station BS (1) ends the control process.

そして、基地局ＢＳ（１）は、制御装置１００からの制御指示を受信する度に、ステップＳ２００からステップＳ２３０の処理を実行する。   And base station BS (1) performs the process of step S200 to step S230, whenever the control instruction | indication from the control apparatus 100 is received.

一方、ステップＳ３００では、基地局ＢＳ（２）の制御部６０は、ステップＳ２３０で基地局ＢＳ（１）により送信された信号ｓｉｇ１に含まれる制御指示に基づいて、新たな送信電力を基地局ＢＳ（２）に設定する。   On the other hand, in step S300, the control unit 60 of the base station BS (2) transmits new transmission power to the base station BS based on the control instruction included in the signal sig1 transmitted by the base station BS (1) in step S230. Set to (2).

そして、基地局ＢＳ（２）は、制御装置１００からの制御指示を受信する度に、ステップＳ３００の処理を実行する。   And base station BS (2) performs the process of step S300, whenever the control instruction | indication from the control apparatus 100 is received.

図５は、図４に示した制御処理により更新された品質テーブルＴＬの一例を示す。図５に示した品質テーブルＴＬにおいて、信号の領域に“ｓｉｇ１（上り）”が格納された上り方向の信号ｓｉｇ１を送信する基地局ＢＳ（２）の送信電力は、図３に示した品質テーブルＴＬの４０ｄＢｍから３０ｄＢｍに減少している。これは、図３の品質テーブルＴＬが示すように、上り方向の信号ｓｉｇ１を送信する基地局ＢＳ（２）のＳＩＮＲの差分は＋１０ｄＢであり、図４に示した処理のステップＳ１５０では、１ｄＢの所定量ずつ基地局ＢＳの送信電力を減少させることから、制御装置１００が、基地局ＢＳ（２）に対して送信電力の制御指示を１０回送信したことを示す。   FIG. 5 shows an example of the quality table TL updated by the control process shown in FIG. In the quality table TL shown in FIG. 5, the transmission power of the base station BS (2) that transmits the upstream signal sig1 in which “sig1 (upstream)” is stored in the signal area is the quality table shown in FIG. The TL is reduced from 40 dBm to 30 dBm. As shown in the quality table TL of FIG. 3, the SINR difference of the base station BS (2) that transmits the upstream signal sig1 is +10 dB. In step S150 of the process shown in FIG. Since the transmission power of the base station BS is decreased by a predetermined amount, the control device 100 indicates that the transmission power control instruction is transmitted 10 times to the base station BS (2).

一方、図５に示した品質テーブルＴＬにおいて、信号の領域に“ｓｉｇ３（下り）”が格納された下り方向の信号ｓｉｇ３を受信する基地局ＢＳ（４）のＳＩＮＲは、図３に示した品質テーブルＴＬの１０ｄＢから２０ｄＢに増加している。これは、基地局ＢＳ（２）が送信する上り方向の信号ｓｉｇ１の送信電力が小さくなったことにより、基地局ＢＳ（３）において上り方向の信号ｓｉｇ１による干渉の発生が抑制されたことを示す。これにより、通信システムＳＹＳは、システム全体におけるスループットおよび周波数利用効率を向上させることができる。   On the other hand, in the quality table TL shown in FIG. 5, the SINR of the base station BS (4) that receives the downlink signal sig3 in which “sig3 (downlink)” is stored in the signal area is the quality shown in FIG. The table TL is increased from 10 dB to 20 dB. This indicates that the transmission power of the uplink signal sig1 transmitted by the base station BS (2) has been reduced, thereby suppressing the occurrence of interference due to the uplink signal sig1 in the base station BS (3). . Thereby, the communication system SYS can improve the throughput and frequency utilization efficiency in the whole system.

また、図５に示した品質テーブルＴＬに格納される信号の順序は、図３に示した品質テーブルＴＬと同一のため、制御装置１００は、制御処理を常に同じ順序で各基地局ＢＳに実行でき、所定の時間内で制御処理を終了させることができる。   Further, since the order of the signals stored in the quality table TL shown in FIG. 5 is the same as that in the quality table TL shown in FIG. 3, the control device 100 always executes the control processing in each base station BS in the same order. The control process can be completed within a predetermined time.

なお、図４に示した制御処理のステップＳ１７０において、制御部１０は、ステップＳ１１０の場合と同様に、ステップＳ１６０で再取得したＳＩＮＲまたはＲＳＳＩの値が大きい、すなわち通信環境が良好で、他の組からの信号の干渉による影響が小さい信号から順に、品質テーブルＴＬに格納して並び変えてもよい。この場合、制御部１０は、ステップＳ１７０の処理後のステップＳ１３０において、１列目に格納された信号を送信する基地局ＢＳの組を処理対象の組とすることが好ましい。   In step S170 of the control process shown in FIG. 4, similarly to the case of step S110, the control unit 10 has a large SINR or RSSI value reacquired in step S160, that is, the communication environment is good. The signals may be stored in the quality table TL and rearranged in order from the signal that is less affected by the interference of the signals from the set. In this case, it is preferable that the control unit 10 sets a set of base stations BS that transmit signals stored in the first column as a set to be processed in step S130 after the process of step S170.

図６は、図４に示した制御処理により更新された品質テーブルＴＬの別例を示す。図６に示した品質テーブルＴＬを用いることにより、制御装置１００は、通信環境が良好で、信号の干渉による影響が小さい組から順に制御処理を実行でき、図５に示した品質テーブルＴＬを用いる場合と比べて、送信電力を容易に最適化できる。   FIG. 6 shows another example of the quality table TL updated by the control process shown in FIG. By using the quality table TL illustrated in FIG. 6, the control device 100 can execute control processing in order from a group in which the communication environment is favorable and the influence of signal interference is small, and the quality table TL illustrated in FIG. 5 is used. Compared to the case, the transmission power can be easily optimized.

また、図１に示した通信システムＳＹＳは、防災無線システム等の他の通信システムが隣接する場合、通信システムＳＹＳの周波数帯域と他の通信システムの周波数帯域との間にガードバンドを設けて設置される。そして、制御装置１００が図４に示した制御処理を通信システムＳＹＳに実行することにより、他の通信システムに対しても信号ｓｉｇ１または信号ｓｉｇ３の漏れ込みによる干渉の発生を抑制できる。この場合、制御装置１００は、図４に示した制御処理を実行した後、ガードバンドを通信システムＳＹＳの周波数帯域として利用してもよい。   1 is installed with a guard band between the frequency band of the communication system SYS and the frequency band of the other communication system when another communication system such as a disaster prevention radio system is adjacent to the communication system SYS. Is done. Then, the control device 100 executes the control process shown in FIG. 4 in the communication system SYS, so that the occurrence of interference due to the leakage of the signal sig1 or the signal sig3 can be suppressed for other communication systems. In this case, the control device 100 may use the guard band as the frequency band of the communication system SYS after executing the control process shown in FIG.

図７は、図１に示した通信システムＳＹＳがガードバンドを周波数帯域として利用する場合の一例を示す。図７の縦軸は受信電力を示し、横軸は周波数を示す。   FIG. 7 shows an example when the communication system SYS shown in FIG. 1 uses a guard band as a frequency band. In FIG. 7, the vertical axis represents received power, and the horizontal axis represents frequency.

図７（ａ）では、周波数ｆ３から周波数ｆ４の周波数帯域は、制御装置１００が制御処理を実行する前の通信システムＳＹＳの周波数帯域のスペクトルを網掛けの領域で示す。また、周波数ｆ１から周波数ｆ２の周波数帯域は、他の通信システムの周波数帯域のスペクトルを実線で示す。また、周波数ｆ２から周波数ｆ３の周波数帯域は、ガードバンドを示す。図７（ａ）では、通信システムＳＹＳの周波数帯域のスペクトルは、ＯＦＤＭの変調方式のものを示し、受信電力Ｐ２を有する。そして、通信システムＳＹＳのスペクトルのうち、受信電力Ｐ１以下の周波数ｆ２から周波数ｆ３と周波数ｆ４から周波数ｆ５との周波数帯域は、マルチパス等の影響により生じた成分を示す。   In FIG. 7A, the frequency band from the frequency f3 to the frequency f4 indicates the spectrum of the frequency band of the communication system SYS before the control device 100 executes the control process in a shaded area. Moreover, the frequency band of the frequency f1 to the frequency f2 shows the spectrum of the frequency band of another communication system with a continuous line. The frequency band from frequency f2 to frequency f3 indicates a guard band. In FIG. 7A, the spectrum of the frequency band of the communication system SYS is that of the OFDM modulation scheme, and has received power P2. In the spectrum of the communication system SYS, the frequency band from the frequency f2 to the frequency f3 and the frequency f4 to the frequency f5 below the received power P1 indicates a component generated due to the influence of multipath or the like.

図７（ｂ）は、制御装置１００が、通信システムＳＹＳに制御処理を実行した後、通信システムＳＹＳの周波数帯域をガードバンドまで拡張した場合の通信システムＳＹＳの周波数帯域のスペクトルを網掛けの領域で示す。図７（ｂ）に示すように、通信システムＳＹＳの拡張前の周波数ｆ３から周波数ｆ４の周波数帯域における受信電力は、制御装置１００の制御処理により受信電力Ｐ２から受信電力（Ｐ２−Ｐ１）に減少する。これにより、マルチパス等の影響による周波数ｆ２−ｆ３と周波数ｆ４−ｆ５との周波数帯域における受信電力は、通信システムＳＹＳの受信電力（Ｐ２−Ｐ１）および他の通信システムの受信電力と比べて非常に小さくなる。これにより、マルチパス等の影響が抑制されることから、制御装置１００は、通信システムＳＹＳの周波数帯域を、ガードバンドを含む周波数ｆ２から周波数ｆ４の周波数帯域に拡張しても、信号ｓｉｇ１等の漏れ込みによる他の通信システムとの干渉を回避できる。また、通信システムＳＹＳは、周波数帯域を拡張することによりスループットおよび周波数利用効率を向上させることができる。   FIG. 7B shows a shaded area of the spectrum of the communication system SYS frequency band when the control device 100 executes control processing on the communication system SYS and then extends the frequency band of the communication system SYS to the guard band. It shows with. As shown in FIG. 7B, the received power in the frequency band from the frequency f3 to the frequency f4 before the expansion of the communication system SYS is decreased from the received power P2 to the received power (P2-P1) by the control process of the control device 100. To do. As a result, the received power in the frequency band of the frequency f2-f3 and the frequency f4-f5 due to the influence of multipath or the like is much higher than the received power (P2-P1) of the communication system SYS and the received power of other communication systems. Becomes smaller. Thereby, since the influence of multipath etc. is suppressed, even if the control apparatus 100 extends the frequency band of the communication system SYS from the frequency f2 including the guard band to the frequency band of the frequency f4, the signal sig1 etc. Interference with other communication systems due to leakage can be avoided. Further, the communication system SYS can improve the throughput and frequency utilization efficiency by extending the frequency band.

以上、図１から図７に示した実施形態では、制御装置１００は、通信システムＳＹＳの各組の基地局ＢＳからＳＩＮＲ、ＲＳＳＩおよび送信電力を含むデータを取得する。制御装置１００は、取得したデータを用いて、ＳＩＮＲが所定のＳＩＮＲ未満となる組の基地局ＢＳがある場合、ＳＩＮＲが所定のＳＩＮＲ以上の組の基地局ＢＳが送信する信号による干渉が発生していると判定する。そこで、制御装置１００は、所定のＳＩＮＲ未満の組のＳＩＮＲが所定のＳＩＮＲ以上となるように、ＳＩＮＲが所定のＳＩＮＲ以上の組の基地局ＢＳに対して、算出したＳＩＮＲから所定のＳＩＮＲを差し引いた差分の範囲内で送信電力を制御する。これにより、通信システムＳＹＳは、システム全体における干渉の発生を抑制でき、スループットおよび周波数利用効率を向上させることができる。   As described above, in the embodiment illustrated in FIGS. 1 to 7, the control device 100 acquires data including SINR, RSSI, and transmission power from each set of base stations BS of the communication system SYS. When there is a set of base stations BS whose SINR is less than a predetermined SINR using the acquired data, the control device 100 causes interference due to a signal transmitted by a set of base stations BS whose SINR is equal to or greater than the predetermined SINR. It is determined that Therefore, the control apparatus 100 subtracts the predetermined SINR from the calculated SINR for the base station BS having the SINR equal to or greater than the predetermined SINR so that the SINR of the group less than the predetermined SINR is equal to or greater than the predetermined SINR. The transmission power is controlled within the range of the difference. Thereby, the communication system SYS can suppress the occurrence of interference in the entire system, and can improve the throughput and frequency utilization efficiency.

以上の詳細な説明により、実施形態の特徴点および利点は明らかになるであろう。これは、特許請求の範囲がその精神および権利範囲を逸脱しない範囲で前述のような実施形態の特徴点および利点にまで及ぶことを意図するものである。また、当該技術分野において通常の知識を有する者であれば、あらゆる改良および変更に容易に想到できるはずである。したがって、発明性を有する実施形態の範囲を前述したものに限定する意図はなく、実施形態に開示された範囲に含まれる適当な改良物および均等物に拠ることも可能である。   From the above detailed description, features and advantages of the embodiments will become apparent. This is intended to cover the features and advantages of the embodiments described above without departing from the spirit and scope of the claims. Also, any improvement and modification should be readily conceivable by those having ordinary knowledge in the art. Therefore, there is no intention to limit the scope of the inventive embodiments to those described above, and appropriate modifications and equivalents included in the scope disclosed in the embodiments can be used.

１０，６０…制御部；２０…記憶部；３０，７０…ＩＦ部；５０…送受信部；ＡＴ…アンテナ；ＢＳ（１）−ＢＳ（４）…基地局；ＮＷ…ネットワーク；ｓｉｇ１，ｓｉｇ３…信号；ＳＹＳ…通信システム DESCRIPTION OF SYMBOLS 10,60 ... Control part; 20 ... Memory | storage part; 30,70 ... IF part; 50 ... Transmission / reception part; AT ... Antenna; BS (1) -BS (4) ... Base station; NW ... Network; sig1, sig3 ... Signal ; SYS ... Communication system

Claims (6)

同一の周波数帯域でデータ信号を伝送する一対の通信装置を複数組有する通信システムの前記各組の少なくとも一方の通信装置からデータ信号の品質を示す品質情報を取得し、
前記品質情報と所定の品質との差分を前記組毎に算出し、
前記品質情報が前記所定の品質未満の組がある場合、前記所定の品質未満の組の前記品質情報が前記所定の品質以上となるように、前記品質情報が前記所定の品質以上の組の前記通信装置に対して、算出した前記差分の範囲内でデータ信号の送信電力を制御する
ことを特徴とする通信システムの制御方法。 Obtaining quality information indicating the quality of the data signal from at least one communication device of each set of the communication system having a plurality of pairs of communication devices transmitting a data signal in the same frequency band;
The difference between the quality information and the predetermined quality is calculated for each set,
When the quality information includes a set of less than the predetermined quality, the quality information of the set of the predetermined quality or higher is set so that the quality information of the set of less than the predetermined quality is equal to or higher than the predetermined quality. A control method for a communication system, comprising: controlling a transmission power of a data signal within a range of the calculated difference for a communication device. 請求項１に記載の通信システムの制御方法において、
前記送信電力を制御する処理は、前記品質情報が前記所定の品質以上の組の前記通信装置に対して、算出した前記差分の範囲内でデータ信号の送信電力を所定量ずつ減少させる
ことを特徴とする通信システムの制御方法。 The communication system control method according to claim 1,
The process of controlling the transmission power is characterized in that the transmission power of the data signal is decreased by a predetermined amount within the calculated difference range with respect to a set of the communication devices whose quality information is equal to or higher than the predetermined quality. A control method for a communication system. 請求項１または請求項２に記載の通信システムの制御方法において、
取得した前記品質情報に含まれるＳＩＮＲ（Signal-to-Interference plus Noise power Ratio）またはＲＳＳＩ（Received Signal Strength Indicator）の値が大きなデータ信号から並べた前記品質情報とデータ信号の送信電力とを含む一覧をさらに生成し、
前記送信電力を制御する処理は、前記品質情報が前記所定の品質以上の組のうち、前記ＳＩＮＲまたはＲＳＳＩの値が大きなデータ信号を送信する前記通信装置から順に、算出した前記差分の範囲内でデータ信号の送信電力を制御する
ことを特徴とする通信システムの制御方法。 In the control method of the communication system according to claim 1 or 2,
A list including the quality information and the transmission power of the data signal arranged from data signals having a large SINR (Signal-to-Interference plus Noise Power Ratio) or RSSI (Received Signal Strength Indicator) included in the acquired quality information Further generate
The processing for controlling the transmission power is performed within the range of the difference calculated in order from the communication device that transmits a data signal having a large SINR or RSSI value in the set in which the quality information is equal to or higher than the predetermined quality. A control method for a communication system, characterized by controlling transmission power of a data signal. 請求項１ないし請求項３のいずれか１項に記載の通信システムの制御方法において、
前記送信電力を制御する処理は、前記通信システムが前記通信システムの周波数帯域と異なる周波数帯域でデータ信号を伝送する他のシステムと隣接して設置され、かつ前記各組の前記品質情報が所定の品質以上の場合、前記他のシステムの周波数帯域と重畳しない範囲内で前記通信システムの周波数帯域を制御することを特徴とする通信システムの制御方法。 In the control method of the communication system according to any one of claims 1 to 3,
The processing for controlling the transmission power is performed such that the communication system is installed adjacent to another system that transmits a data signal in a frequency band different from the frequency band of the communication system, and the quality information of each set is predetermined. A control method for a communication system, characterized by controlling a frequency band of the communication system within a range that does not overlap with a frequency band of the other system when the quality is higher. 同一の周波数帯域でデータ信号を伝送する一対の通信装置を複数組有する通信システムの前記各組の少なくとも一方の通信装置からデータ信号の品質を示す品質情報を取得する取得部と、
前記品質情報と所定の品質との差分を前記組毎に算出する算出部と、
前記品質情報が前記所定の品質未満の組がある場合、前記所定の品質未満の組の前記品質情報が前記所定の品質以上となるように、前記品質情報が前記所定の品質以上の組の前記通信装置に対して、算出した前記差分の範囲内でデータ信号の送信電力を制御する制御部と
を備えることを特徴とする制御装置。 An acquisition unit that acquires quality information indicating the quality of the data signal from at least one communication device of each set of the communication system having a plurality of pairs of communication devices that transmit data signals in the same frequency band;
A calculation unit for calculating a difference between the quality information and a predetermined quality for each set;
When the quality information includes a set of less than the predetermined quality, the quality information of the set of the predetermined quality or higher is set so that the quality information of the set of less than the predetermined quality is equal to or higher than the predetermined quality. A control device comprising: a control unit that controls transmission power of a data signal within a range of the calculated difference with respect to the communication device. 同一の周波数帯域でデータ信号を伝送する一対の通信装置を複数組有する通信システムの前記各組の少なくとも一方の通信装置からデータ信号の品質を示す品質情報を取得し、
前記品質情報と所定の品質との差分を前記組毎に算出し、
前記品質情報が前記所定の品質未満の組がある場合、前記所定の品質未満の組の前記品質情報が前記所定の品質以上となるように、前記品質情報が前記所定の品質以上の組の前記通信装置に対して、算出した前記差分の範囲内でデータ信号の送信電力を制御する
処理をコンピュータに実行させることを特徴とする制御プログラム。 Obtaining quality information indicating the quality of the data signal from at least one communication device of each set of the communication system having a plurality of pairs of communication devices transmitting a data signal in the same frequency band;
The difference between the quality information and the predetermined quality is calculated for each set,
When the quality information includes a set of less than the predetermined quality, the quality information of the set of the predetermined quality or higher is set so that the quality information of the set of less than the predetermined quality is equal to or higher than the predetermined quality. A control program for causing a communication device to execute a process of controlling transmission power of a data signal within a range of the calculated difference.
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JP2008258937A (en) * 2007-04-05 2008-10-23 Matsushita Electric Ind Co Ltd Propagation environment estimation method, apparatus and communication method
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