JP2017103557A - Interference power measurement method and interference power measuring apparatus - Google Patents

Interference power measurement method and interference power measuring apparatus Download PDF

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JP2017103557A
JP2017103557A JP2015234155A JP2015234155A JP2017103557A JP 2017103557 A JP2017103557 A JP 2017103557A JP 2015234155 A JP2015234155 A JP 2015234155A JP 2015234155 A JP2015234155 A JP 2015234155A JP 2017103557 A JP2017103557 A JP 2017103557A
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interference power
power measurement
measurement signal
antenna directivity
base station
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友規 村上
Tomoki Murakami
友規 村上
ヒランタシティラ アベーセーカラ
Sithira Abeysekera Hirantha
ヒランタシティラ アベーセーカラ
浩一 石原
Koichi Ishihara
浩一 石原
宗大 松井
Munehiro Matsui
宗大 松井
俊朗 中平
Toshiro Nakahira
俊朗 中平
泰司 鷹取
Taiji Takatori
泰司 鷹取
匡人 溝口
Masato Mizoguchi
匡人 溝口
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Nippon Telegraph and Telephone Corp
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Abstract

PROBLEM TO BE SOLVED: To efficiently acquire an interference power for each antenna directivity pattern between a plurality of base stations.SOLUTION: A method includes: a step 1 of setting an antenna directivity pattern to a plurality of base stations, and transmitting a trigger signal for setting a transmission time for transmitting an interference power measurement signal by the antenna directivity pattern and a measurement time for measuring an interference power, by a centralized control station; a step 2 of setting a transmission antenna directivity pattern that is set by the trigger signal addressed to itself, and transmitting the interference power measurement signal during the transmission time, by a base station that transmits the interference power measurement signal among the plurality of base stations; and a step 3 of setting a reception antenna directivity pattern that is set by the trigger signal addressed to itself, receiving the interference power measurement signal during a reception time, measuring the interference power, and transmitting information on the interference power to the centralized control station, by the base station that receives the interference power measurement signal among the plurality of base stations.SELECTED DRAWING: Figure 3

Description

本発明は、アンテナ指向性パタンを選択して通信する基地局において、アンテナ指向性パタンごとに基地局間の干渉電力を測定する干渉電力測定方法および干渉電力測定装置に関する。   The present invention relates to an interference power measuring method and an interference power measuring apparatus that measure interference power between base stations for each antenna directivity pattern in a base station that selects and communicates antenna directivity patterns.

近年、ノートパソコンやスマートフォン等の持ち運び可能で高性能な無線端末の普及により企業や公共スペースだけではなく、一般家庭でもIEEE802.11標準規格の無線ＬＡＮが広く使われるようになっている。IEEE802.11標準規格の無線ＬＡＮには、 2.4ＧHz帯を用いるIEEE802.11b/g/n 規格の無線ＬＡＮと、５ＧHz帯を用いるIEEE802.11a/n/ac規格の無線ＬＡＮがある。   In recent years, with the spread of portable and high-performance wireless terminals such as laptop computers and smartphones, wireless LANs based on the IEEE 802.11 standard have been widely used not only in businesses and public spaces, but also in general homes. The IEEE802.11 standard wireless LAN includes an IEEE802.11b / g / n standard wireless LAN using the 2.4 GHz band and an IEEE802.11a / n / ac standard wireless LAN using the 5 GHz band.

IEEE802.11ｂ規格やIEEE802.11ｇ規格の無線ＬＡＮでは、2400ＭHzから2483.5ＭHz間に５ＭHz間隔で13チャネルが用意されている。ただし、同一場所で複数のチャネルを使用する際は、干渉を避けるためスペクトルが重ならないようにチャネルを使用すると最大で３チャネル、場合によっては４チャネルまで同時に使用できる。   In the wireless LAN of IEEE802.11b standard or IEEE802.11g standard, 13 channels are prepared at intervals of 5 MHz between 2400 MHz and 2483.5 MHz. However, when a plurality of channels are used at the same location, if the channels are used so that the spectra do not overlap in order to avoid interference, a maximum of 3 channels, and in some cases, 4 channels can be used simultaneously.

IEEE802.11ａ規格の無線ＬＡＮでは、日本の場合は、5170ＭHzから5330ＭHz間と、5490ＭHzから5710ＭHz間で、それぞれ互いに重ならない８チャネルおよび11チャネルの合計19チャネルが規定されている。なお、IEEE802.11ａ規格では、チャネル当たりの帯域幅が20ＭHzに固定されている。   In the wireless LAN of IEEE802.11a standard, in Japan, a total of 19 channels of 8 channels and 11 channels that do not overlap each other are defined between 5170 MHz and 5330 MHz and between 5490 MHz and 5710 MHz. In the IEEE802.11a standard, the bandwidth per channel is fixed at 20 MHz.

無線ＬＡＮの最大伝送速度は、IEEE802.11ｂ規格の場合は11Ｍbps であり、IEEE802.11ａ規格やIEEE802.11ｇ規格の場合は54Ｍbps である。ただし、ここでの伝送速度は物理レイヤ上での伝送速度である。実際にはＭＡＣ（Medium Access Control ）レイヤでの伝送効率が50〜70％程度であるため、実際のスループットの上限値はIEEE802.11ｂ規格では５Ｍbps 程度、IEEE802.11ａ規格やIEEE802.11ｇ規格では30Ｍbps 程度である。また、伝送速度は、情報を送信しようとする通信局が増えればさらに低下する。   The maximum transmission speed of the wireless LAN is 11 Mbps for the IEEE802.11b standard, and 54 Mbps for the IEEE802.11a standard or the IEEE802.11g standard. However, the transmission rate here is the transmission rate on the physical layer. Actually, since the transmission efficiency in the MAC (Medium Access Control) layer is about 50 to 70%, the upper limit of the actual throughput is about 5 Mbps in the IEEE802.11b standard, and 30 Mbps in the IEEE802.11a standard and the IEEE802.11g standard. Degree. In addition, the transmission rate further decreases as the number of communication stations that attempt to transmit information increases.

2009年に標準化が完了したIEEE802.11ｎ規格では、これまで20ＭHzと固定されていたチャネル帯域幅が最大で40ＭHzに拡大され、また、空間多重送信技術（ＭＩＭＯ：Multiple
input multiple output）技術の導入が決定された。IEEE802.11ｎ規格で規定されているすべての機能を適用して送受信を行うと、物理レイヤでは最大で 600Ｍbps の通信速度を実現可能である。 In the IEEE802.11n standard, which was standardized in 2009, the channel bandwidth, which had been fixed at 20 MHz, has been expanded to a maximum of 40 MHz, and spatial multiplexing technology (MIMO: Multiple
The introduction of input multiple output) technology was decided. When transmission / reception is performed by applying all functions defined in the IEEE802.11n standard, a maximum communication speed of 600 Mbps can be realized in the physical layer.

さらに、2013年に標準化が完了したIEEE802.11ac規格では、チャネル帯域幅を80ＭHzや最大で 160ＭHzまで拡大することや、空間分割多元接続（ＳＤＭＡ：Space Division Multiple Access）を適用したマルチユーザＭＩＭＯ（ＭＵ−ＭＩＭＯ）送信方法の導入が決定している。IEEE802.11ac規格で規定されているすべての機能を適用して送受信を行うと、物理レイヤでは最大で約 6.9Ｇbps の通信速度を実現可能である。   Furthermore, in the IEEE802.11ac standard, which was standardized in 2013, the channel bandwidth was expanded to 80 MHz or up to 160 MHz, and multi-user MIMO (MU) using Space Division Multiple Access (SDMA) was applied. -MIMO) The introduction of transmission methods has been decided. If transmission and reception are performed by applying all the functions specified in the IEEE802.11ac standard, a maximum communication speed of about 6.9 Gbps can be realized in the physical layer.

ＳＤＭＡ方式では、アンテナの指向性（ビーム）を利用し、電波空間を分割することにより同じ周波数帯と同じ時間帯で、基地局と複数の端末局との間の通信を可能にしている。すなわち、基地局は、アダプティブ・アレイ・アンテナ（スマート・アンテナ）を備え、各アンテナに接続された移相器（位相変換器）や減衰器（振幅変換器）の調整により、複数の端末局に対して個別のアンテナ指向性を生成することにより、基地局と複数の端末局が同時に通信が可能になっている。   In the SDMA system, communication between a base station and a plurality of terminal stations is enabled in the same frequency band and the same time zone by dividing the radio wave space by using antenna directivity (beam). That is, the base station is equipped with an adaptive array antenna (smart antenna), and by adjusting a phase shifter (phase converter) and attenuator (amplitude converter) connected to each antenna, On the other hand, by generating individual antenna directivities, a base station and a plurality of terminal stations can communicate simultaneously.

また、アンテナ指向性制御により、通信セル間の干渉電力を低減し、受信局に対して最も受信電力が高くなるアンテナ指向性を設定して通信を行うことにより、スループットの向上および通信品質の向上を図ることができる（非特許文献１）。   In addition, the antenna directivity control reduces the interference power between communication cells and sets the antenna directivity that maximizes the reception power for the receiving station to perform communication, thereby improving throughput and communication quality. (Non-Patent Document 1).

M.Mouhamadou and P. Vaudon, "Smart Antenna Array Patterns Synthesis: Null Steering and Multi-user Beamforming by Phase Control," Progr.Electromagn. Res., Vol.60, pp.95-106, 2006M.Mouhamadou and P. Vaudon, "Smart Antenna Array Patterns Synthesis: Null Steering and Multi-user Beamforming by Phase Control," Progr. Electromagn. Res., Vol.60, pp.95-106, 2006

通信セルが複数存在する環境において、各基地局が通信品質の向上が可能なアンテナ指向性パタンを選択するためには、アンテナ指向性パタンごとに隣接セルへの干渉電力の情報が必要となる。しかし、アンテナ指向性パタンごとの干渉電力を測定するためには、送信側の基地局のアンテナ指向性パタンと受信側の基地局のアンテナ指向性パタンの組合せごとに、基地局間で同期を確立して干渉電力を測定する必要があるが、具体的な方法は検討されていない。   In an environment where there are a plurality of communication cells, in order for each base station to select an antenna directivity pattern capable of improving communication quality, information on interference power to adjacent cells is required for each antenna directivity pattern. However, in order to measure the interference power for each antenna directivity pattern, synchronization is established between the base stations for each combination of the antenna directivity pattern of the transmitting base station and the antenna directivity pattern of the receiving base station. Thus, it is necessary to measure the interference power, but a specific method has not been studied.

本発明は、複数の基地局間におけるアンテナ指向性パタンごとの干渉電力の情報を効率よく取得することができる干渉電力測定方法および干渉電力測定装置を提供することを目的とする。   An object of the present invention is to provide an interference power measuring method and an interference power measuring apparatus capable of efficiently acquiring information on interference power for each antenna directivity pattern between a plurality of base stations.

第１の発明は、複数の基地局がそれぞれアンテナ指向性パタンを選択し、帰属する端末局と無線通信を行う無線通信システムで、アンテナ指向性パタンごとに基地局間の干渉電力を測定する干渉電力測定方法において、複数の基地局に接続される集中制御局が、複数の基地局に対してアンテナ指向性パタンを設定し、そのアンテナ指向性パタンで干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定時間を設定するトリガ信号を送信するステップ１と、複数の基地局のうち干渉電力測定用信号を送信する基地局は、自局宛のトリガ信号で設定される送信アンテナ指向性パタンを設定し、送信時間中に干渉電力測定用信号を送信するステップ２と、複数の基地局のうち干渉電力測定用信号を受信する基地局は、自局宛のトリガ信号で設定される受信アンテナ指向性パタンを設定し、受信時間中に干渉電力測定用信号を受信して干渉電力を測定し、その干渉電力の情報を集中制御局に送信するステップ３とを有する。   A first invention is a wireless communication system in which a plurality of base stations select an antenna directivity pattern and perform wireless communication with a terminal station to which the base station belongs, and interference that measures interference power between base stations for each antenna directivity pattern. In the power measurement method, a centralized control station connected to a plurality of base stations sets an antenna directivity pattern for the plurality of base stations, and transmits a signal for measuring interference power with the antenna directivity pattern and Step 1 for transmitting a trigger signal for setting a measurement time for measuring interference power, and a base station that transmits an interference power measurement signal among a plurality of base stations is set to transmit antenna direction set by a trigger signal addressed to the own station. Step 2 for transmitting the interference power measurement signal during the transmission time, and the base station receiving the interference power measurement signal among the plurality of base stations is a trigger addressed to the own station. Step 3 for setting a receiving antenna directivity pattern set by the signal, receiving the interference power measurement signal during the reception time, measuring the interference power, and transmitting information on the interference power to the centralized control station. .

第２の発明は、第１の発明の干渉電力測定方法において、ステップ１で、トリガ信号により送信時間中に干渉電力測定用信号を複数回送信する設定とし、ステップ２で、干渉電力測定用信号を送信する基地局は、送信時間中に干渉電力測定用信号を複数回送信し、ステップ３で、干渉電力測定用信号を受信する基地局は、受信時間中に干渉電力測定用信号を受信して測定した干渉電力の平均値をとり、その干渉電力の平均値を集中制御局に送信する。   According to a second aspect of the present invention, in the interference power measurement method according to the first aspect of the present invention, in step 1, the interference power measurement signal is set to be transmitted a plurality of times during the transmission time by the trigger signal, and in step 2, the interference power measurement signal is set. The base station that transmits the interference power measurement signal is transmitted a plurality of times during the transmission time. In step 3, the base station that receives the interference power measurement signal receives the interference power measurement signal during the reception time. The average value of the interference power measured in this way is taken, and the average value of the interference power is transmitted to the central control station.

第３の発明は、第２の発明の干渉電力測定方法において、ステップ１で、トリガ信号により干渉電力測定用信号の受信時間を複数回に分けて設定し、ステップ３で、干渉電力測定用信号を受信する基地局は、受信時間ごとに干渉電力測定用信号を受信して測定した干渉電力の平均値をとる。   According to a third invention, in the interference power measurement method of the second invention, in step 1, the reception time of the interference power measurement signal is set in a plurality of times by the trigger signal in step 1, and in step 3, the interference power measurement signal is set. The base station that receives the signal takes an average value of the interference power measured by receiving the interference power measurement signal every reception time.

第４の発明は、第２の発明の干渉電力測定方法において、ステップ１で、トリガ信号に
より送信時間中に干渉電力測定用信号を送信する送信間隔を基地局ごとに異なる設定とし、ステップ２で、干渉電力測定用信号を送信する基地局は、送信時間中に干渉電力測定用信号を基地局ごとに異なる送信間隔で送信する。 According to a fourth invention, in the interference power measurement method of the second invention, in step 1, the transmission interval for transmitting the interference power measurement signal during the transmission time by the trigger signal is set differently for each base station. The base station that transmits the interference power measurement signal transmits the interference power measurement signal at different transmission intervals for each base station during the transmission time.

第５の発明は、第２〜第４の発明の干渉電力測定方法において、ステップ１で、トリガ信号により複数の送信アンテナ指向性パタンを切り替える設定とし、送信アンテナ指向性パタンごとに干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定時間を設定し、ステップ２で、干渉電力測定用信号を送信する基地局は、送信アンテナ指向性パタンを切り替えながら、送信アンテナ指向性パタンごとの送信時間中に干渉電力測定用信号を送信し、ステップ３で、干渉電力測定用信号を受信する基地局は、送信アンテナ指向性パタンごとの受信時間に干渉電力測定用信号を受信して干渉電力を測定し、送信アンテナ指向性パタンごとの干渉電力の平均値を集中制御局に送信する。   According to a fifth invention, in the interference power measurement methods of the second to fourth inventions, in step 1, a setting is made to switch a plurality of transmission antenna directivity patterns by a trigger signal, and the interference power measurement is performed for each transmission antenna directivity pattern. The transmission time for transmitting the signal and the measurement time for measuring the interference power are set, and in step 2, the base station that transmits the interference power measurement signal switches the transmission antenna directivity pattern for each transmission antenna directivity pattern. The base station that transmits the interference power measurement signal during the transmission time and receives the interference power measurement signal in step 3 receives the interference power measurement signal at the reception time for each transmission antenna directivity pattern and receives the interference power measurement signal. And the average value of the interference power for each transmission antenna directivity pattern is transmitted to the central control station.

第６の発明は、第２〜第４の発明の干渉電力測定方法において、ステップ１で、トリガ信号により複数の受信アンテナ指向性パタンを切り替える設定とし、受信アンテナ指向性パタンごとに干渉電力測定用信号の干渉電力を測定する測定時間を設定し、ステップ３で、干渉電力測定用信号を受信する基地局は、受信アンテナ指向性パタンを切り替えながら、受信アンテナ指向性パタンごとの受信時間中に干渉電力測定用信号を受信して干渉電力を測定し、受信アンテナ指向性パタンごとの干渉電力の平均値を集中制御局に送信する。   According to a sixth aspect of the present invention, in the interference power measurement method according to the second to fourth aspects, in step 1, a setting is made to switch a plurality of reception antenna directivity patterns by a trigger signal, and the interference power measurement is performed for each reception antenna directivity pattern. The measurement time for measuring the interference power of the signal is set, and the base station receiving the interference power measurement signal in step 3 performs interference during the reception time for each reception antenna directivity pattern while switching the reception antenna directivity pattern. The power measurement signal is received, the interference power is measured, and the average value of the interference power for each reception antenna directivity pattern is transmitted to the central control station.

第７の発明は、複数の基地局がそれぞれアンテナ指向性パタンを選択し、帰属する端末局と無線通信を行う無線通信システムで、アンテナ指向性パタンごとに基地局間の干渉電力を測定する干渉電力測定装置において、複数の基地局に対してアンテナ指向性パタンを設定し、そのアンテナ指向性パタンで干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定時間を設定するトリガ信号を送信する集中制御局と、複数の基地局のうち、自局宛のトリガ信号で設定される送信アンテナ指向性パタンを設定し、送信時間中に干渉電力測定用信号を送信する第１の基地局と、複数の基地局のうち、自局宛のトリガ信号で設定される受信アンテナ指向性パタンを設定し、受信時間中に干渉電力測定用信号を受信して干渉電力を測定し、その干渉電力の情報を集中制御局に送信する第２の基地局とを備える。   A seventh invention is a wireless communication system in which a plurality of base stations each select an antenna directivity pattern and perform wireless communication with a terminal station to which the base station belongs, and interference that measures interference power between base stations for each antenna directivity pattern In the power measuring apparatus, an antenna directivity pattern is set for a plurality of base stations, a transmission time for transmitting an interference power measurement signal with the antenna directivity pattern, and a trigger signal for setting a measurement time for measuring the interference power are set. A central control station to transmit and a first base station that sets a transmission antenna directivity pattern set by a trigger signal addressed to the own station among a plurality of base stations and transmits an interference power measurement signal during the transmission time And, among the plurality of base stations, set the receiving antenna directivity pattern set by the trigger signal addressed to itself, receive the interference power measurement signal during the reception time, measure the interference power, And a second base station that transmits the information of the interference power to the central control station.

第８の発明の干渉電力測定装置は、集中制御局は、トリガ信号により送信時間中に干渉電力測定用信号を複数回送信する設定を行い、干渉電力測定用信号を送信する第１の基地局は、送信時間中に干渉電力測定用信号を複数回送信する構成であり、干渉電力測定用信号を受信する第２の基地局は、受信時間中に干渉電力測定用信号を受信して測定した干渉電力の平均値をとり、その干渉電力の平均値を集中制御局に送信する構成である。   In the interference power measuring apparatus according to the eighth aspect of the invention, the central control station performs setting so that the interference power measurement signal is transmitted a plurality of times during the transmission time by the trigger signal, and the first base station transmits the interference power measurement signal. Is a configuration in which the interference power measurement signal is transmitted a plurality of times during the transmission time, and the second base station receiving the interference power measurement signal receives and measures the interference power measurement signal during the reception time. In this configuration, the average value of the interference power is taken and the average value of the interference power is transmitted to the central control station.

第９の発明は、第８の発明の干渉電力測定装置において、集中制御局は、トリガ信号により干渉電力測定用信号の受信時間を複数回に分けて設定し、干渉電力測定用信号を受信する第２の基地局は、受信時間ごとに干渉電力測定用信号を受信して測定した干渉電力の平均値をとる構成である。   According to a ninth aspect of the present invention, in the interference power measuring apparatus according to the eighth aspect, the central control station sets the reception time of the interference power measurement signal in a plurality of times by the trigger signal and receives the interference power measurement signal. The second base station is configured to take an average value of the interference power measured by receiving the interference power measurement signal every reception time.

第１０の発明は、第８の発明の干渉電力測定装置において、集中制御局は、トリガ信号により送信時間中に干渉電力測定用信号を送信する送信間隔を基地局ごとに異なる設定とし、干渉電力測定用信号を送信する第１の基地局は、送信時間中に干渉電力測定用信号を基地局ごとに異なる送信間隔で送信する構成である。   According to a tenth aspect of the present invention, in the interference power measuring apparatus according to the eighth aspect of the invention, the centralized control station sets a transmission interval for transmitting the interference power measurement signal during the transmission time based on the trigger signal to be different for each base station. The first base station that transmits the measurement signal is configured to transmit the interference power measurement signal at different transmission intervals for each base station during the transmission time.

第１１の発明は、第８〜第１０の発明の干渉電力測定装置において、集中制御局は、トリガ信号により複数の送信アンテナ指向性パタンを切り替える設定とし、送信アンテナ指向性パタンごとに干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定
時間を設定し、干渉電力測定用信号を送信する第１の基地局は、送信アンテナ指向性パタンを切り替えながら、送信アンテナ指向性パタンごとの送信時間中に干渉電力測定用信号を送信する構成であり、干渉電力測定用信号を受信する第２の基地局は、送信アンテナ指向性パタンごとの受信時間に干渉電力測定用信号を受信して干渉電力を測定し、送信アンテナ指向性パタンごとの干渉電力の平均値を集中制御局に送信する構成である。 An eleventh aspect of the invention is the interference power measuring apparatus according to the eighth to tenth aspects of the invention, wherein the central control station is configured to switch a plurality of transmission antenna directivity patterns by a trigger signal and measure the interference power for each transmission antenna directivity pattern. The first base station that sets the transmission time for transmitting the signal for transmission and the measurement time for measuring the interference power and transmits the interference power measurement signal switches the transmission antenna directivity pattern for each transmission antenna directivity pattern. The configuration is such that the interference power measurement signal is transmitted during the transmission time, and the second base station receiving the interference power measurement signal receives the interference power measurement signal at the reception time for each transmission antenna directivity pattern. In this configuration, the interference power is measured, and the average value of the interference power for each transmission antenna directivity pattern is transmitted to the central control station.

第１２の発明は、第８〜第１０の発明の干渉電力測定装置において、集中制御局は、トリガ信号により複数の受信アンテナ指向性パタンを切り替える設定とし、受信アンテナ指向性パタンごとに干渉電力測定用信号の干渉電力を測定する測定時間を設定し、干渉電力測定用信号を受信する第２の基地局は、受信アンテナ指向性パタンを切り替えながら、受信アンテナ指向性パタンごとの受信時間中に干渉電力測定用信号を受信して干渉電力を測定し、受信アンテナ指向性パタンごとの干渉電力の平均値を集中制御局に送信する構成である。   According to a twelfth aspect of the present invention, in the interference power measuring apparatus according to the eighth to tenth aspects of the invention, the central control station is configured to switch a plurality of reception antenna directivity patterns by a trigger signal, and measure the interference power for each reception antenna directivity pattern. The second base station that sets the measurement time for measuring the interference power of the reception signal and receives the interference power measurement signal performs interference during the reception time for each reception antenna directivity pattern while switching the reception antenna directivity pattern. In this configuration, a power measurement signal is received to measure interference power, and an average value of interference power for each reception antenna directivity pattern is transmitted to a centralized control station.

本発明は、集中制御局がトリガ信号を用いて複数の基地局のアンテナ指向性パタンの切り替えの同期制御を行うことにより、複数の基地局間におけるアンテナ指向性パタンごとの干渉電力の情報を効率よく取得することができる。   In the present invention, the centralized control station uses the trigger signal to perform synchronous control of switching the antenna directivity patterns of a plurality of base stations, thereby efficiently obtaining information on the interference power for each antenna directivity pattern between the plurality of base stations. Can get well.

本発明が適用される無線通信システムの構成例を示す図である。It is a figure which shows the structural example of the radio | wireless communications system to which this invention is applied. 基地局１０および集中制御局２０の構成例を示す図である。FIG. 2 is a diagram illustrating a configuration example of a base station 10 and a centralized control station 20. 本発明の実施例１の干渉電力測定手順例を示すシーケンス図である。It is a sequence diagram which shows the example of an interference power measurement procedure of Example 1 of this invention. 本発明の実施例２の干渉電力測定手順例を示すシーケンス図である。It is a sequence diagram which shows the example of an interference power measurement procedure of Example 2 of this invention. 本発明の実施例３の干渉電力測定手順例を示すシーケンス図である。It is a sequence diagram which shows the example of an interference power measurement procedure of Example 3 of this invention. 本発明の実施例４の干渉電力測定手順例を示すシーケンス図である。It is a sequence diagram which shows the example of an interference power measurement procedure of Example 4 of this invention. 本発明の実施例５の干渉電力測定手順例を示すシーケンス図である。It is a sequence diagram which shows the example of an interference power measurement procedure of Example 5 of this invention. 本発明の実施例６の干渉電力測定手順例を示すシーケンス図である。It is a sequence diagram which shows the example of an interference power measurement procedure of Example 6 of this invention.

図１は、本発明が適用される無線通信システムの構成例を示す。
図１において、無線通信システムは、隣接する無線セルの基地局１０−１〜１０−Ｎ（Ｎは２以上の整数）がそれぞれ同一周波数を用いて配下の端末局（図１では省略）とデータ通信を行う構成である。ただし、各基地局１０−１〜１０−Ｎは互いに干渉を受けるので、他の基地局からの干渉電力の低減が可能なアンテナ指向性パタンを選択して通信品質を向上させる機能を備える。また、各基地局１０−１〜１０−Ｎには、ネットワーク１００を介して集中制御局２０が接続される。各基地局とネットワークの間の接続形態、ネットワークと集中制御局との間の接続形態は、それぞれ有線接続、無線接続のいずれでもよい。 FIG. 1 shows a configuration example of a wireless communication system to which the present invention is applied.
In FIG. 1, the wireless communication system includes a base station 10-1 to 10 -N (N is an integer of 2 or more) of adjacent wireless cells using the same frequency, and terminal stations (not shown in FIG. 1) and data It is the structure which communicates. However, since each base station 10-1 to 10-N receives interference, it has a function of improving communication quality by selecting an antenna directivity pattern capable of reducing interference power from other base stations. A central control station 20 is connected to each of the base stations 10-1 to 10-N via the network 100. The connection form between each base station and the network and the connection form between the network and the central control station may be either wired connection or wireless connection.

本発明の特徴は、各基地局１０−１〜１０−Ｎが集中制御局２０のトリガ信号を用いて、送信アンテナ指向性パタンおよび受信アンテナ指向性パタンを切り替えながら干渉電力を測定し、複数の基地局間におけるアンテナ指向性パタンごとの干渉電力を効率よく取得するための構成および処理手順にある。   A feature of the present invention is that each base station 10-1 to 10-N uses a trigger signal of the centralized control station 20 to measure interference power while switching between a transmission antenna directivity pattern and a reception antenna directivity pattern, The configuration and processing procedure are for efficiently acquiring the interference power for each antenna directivity pattern between base stations.

図２は、基地局１０および集中制御局２０の構成例を示す。
図２において、基地局１０は、アンテナ素子１１−１〜１１−Ａ、アンテナ制御部１２、無線信号処理部１３、ネットワーク信号処理部１４および情報処理部１５により構成される。さらに、情報処理部１５は記憶部１６を備える。集中制御局２０は、ネットワーク信号処理部２１、トリガ信号生成部２２およびデータベース２３により構成される。基地
局１０のネットワーク信号処理部１４と集中制御局２０のネットワーク信号処理部２１がネットワーク１００を介して接続される。 FIG. 2 shows a configuration example of the base station 10 and the centralized control station 20.
In FIG. 2, the base station 10 includes antenna elements 11-1 to 11 -A, an antenna control unit 12, a radio signal processing unit 13, a network signal processing unit 14, and an information processing unit 15. Further, the information processing unit 15 includes a storage unit 16. The central control station 20 includes a network signal processing unit 21, a trigger signal generation unit 22, and a database 23. The network signal processing unit 14 of the base station 10 and the network signal processing unit 21 of the central control station 20 are connected via the network 100.

基地局１０の無線信号処理部１３は、無線信号をアンテナ制御部１２を介してアンテナ素子１１−１〜１１−Ａから送信し、アンテナ素子１１−１〜１１−Ａに受信した無線信号をアンテナ制御部１２を介して入力し受信処理する。アンテナ制御部１２は、アンテナ素子１１−１〜１１−Ａごとに無線信号の振幅・位相を制御してアンテナ指向性パタンを設定する。   The radio signal processing unit 13 of the base station 10 transmits radio signals from the antenna elements 11-1 to 11-A via the antenna control unit 12, and receives the radio signals received by the antenna elements 11-1 to 11-A as antennas. Input via the control unit 12 and receive processing. The antenna control unit 12 sets the antenna directivity pattern by controlling the amplitude and phase of the radio signal for each of the antenna elements 11-1 to 11-A.

ここで、基地局１０および集中制御局２０における干渉電力測定のための構成について説明する。
集中制御局２０のトリガ信号生成部２２は、以下に示す情報を記載したトリガ信号を生成し、ネットワーク信号処理部２１からネットワーク１００を介して各基地局１０に送信する。基地局１０のネットワーク信号処理部１４は、集中制御局２０から送信されたトリガ信号を受信し、自局宛のトリガ信号を復調して情報処理部１５に出力する。 Here, a configuration for measuring interference power in the base station 10 and the centralized control station 20 will be described.
The trigger signal generation unit 22 of the centralized control station 20 generates a trigger signal in which the following information is described, and transmits the trigger signal from the network signal processing unit 21 to each base station 10 via the network 100. The network signal processing unit 14 of the base station 10 receives the trigger signal transmitted from the central control station 20, demodulates the trigger signal addressed to itself, and outputs the demodulated signal to the information processing unit 15.

干渉電力測定用信号を送信する基地局（以下、１０Ａとする）に対するトリガ信号には、次の情報が設定される。
(11)送信アンテナ指向性パタンの設定情報
(12)設定する送信アンテナ指向性パタンで干渉電力測定用信号を送信する開始時間と終了時間を含む送信時間情報 The following information is set in the trigger signal for the base station (hereinafter referred to as 10A) that transmits the interference power measurement signal.
(11) Transmission antenna directivity pattern setting information
(12) Transmission time information including the start time and end time of transmitting the interference power measurement signal with the transmission antenna directivity pattern to be set

基地局１０Ａの情報処理部１５は、上記の(11),(12) の情報に基づき、送信アンテナ指向性パタンの設定および切り替えをアンテナ制御部１２に対して行い、干渉電力測定用信号の送信を無線信号処理部１３に指示する。   Based on the information (11) and (12), the information processing unit 15 of the base station 10A sets and switches the transmission antenna directivity pattern to the antenna control unit 12, and transmits the interference power measurement signal. To the wireless signal processing unit 13.

干渉電力測定用信号を受信して干渉電力を測定する基地局（以下、１０Ｂとする）に対するトリガ信号には、次の情報が設定される。
(21)受信アンテナ指向性パタンの設定情報
(22)干渉電力測定用信号を受信して干渉電力を測定する開始時間と終了時間を含む測定時間情報 The following information is set in the trigger signal for the base station (hereinafter referred to as 10B) that receives the interference power measurement signal and measures the interference power.
(21) Receiving antenna directivity pattern setting information
(22) Measurement time information including start time and end time of receiving interference power measurement signal and measuring interference power

基地局１０Ｂの情報処理部１５は、上記の(21),(22) の情報に基づき、受信アンテナ指向性パタンの設定および切り替えをアンテナ制御部１２に対して行い、干渉電力測定用信号を受信して測定された干渉電力を通知するように無線信号処理部１３に指示する。   Based on the information (21) and (22), the information processing unit 15 of the base station 10B performs setting and switching of the reception antenna directivity pattern with respect to the antenna control unit 12, and receives the interference power measurement signal. The radio signal processing unit 13 is instructed to notify the measured interference power.

以上により、基地局１０Ａ，１０Ｂは、トリガ信号により設定された送受信アンテナ指向性パタンと送受信スケジュールにより、情報処理部１５の制御によりアンテナ制御部１２に設定されるアンテナ指向性パタンで干渉電力測定用信号を送受信し、干渉電力の測定が行われる。   As described above, the base stations 10A and 10B use the antenna directivity pattern set in the antenna control unit 12 by the control of the information processing unit 15 based on the transmission / reception antenna directivity pattern set by the trigger signal and the transmission / reception schedule. Signals are transmitted and received, and interference power is measured.

干渉電力を測定する基地局１０Ｂにおいて、受信アンテナ指向性パタンごとに測定された干渉電力は、無線信号処理部１３から情報処理部１５の記憶部１６に蓄積される。情報処理部１５は、基地局情報とトリガ信号の情報に応じて取得したアンテナ指向性パタンごとの干渉電力の情報から通知信号を生成し、ネットワーク信号処理部１４からネットワーク１００を介して集中制御局２０に伝送し、集中制御局２０のデータベース２３に保持される。集中制御局２０では、基地局１０Ａに対して設定した送信アンテナ指向性パタンによる干渉電力測定用信号の送信時間と、基地局１０Ｂに対して設定した受信アンテナ指向性パタンによる干渉電力の測定時間を照合することにより、基地局１０Ａの送信アンテナ指向性パタンと基地局１０Ｂの受信アンテナ指向性パタンにおける干渉電力を取得するこ
とができる。 In the base station 10B that measures the interference power, the interference power measured for each reception antenna directivity pattern is accumulated from the radio signal processing unit 13 into the storage unit 16 of the information processing unit 15. The information processing unit 15 generates a notification signal from the interference power information for each antenna directivity pattern acquired according to the base station information and the trigger signal information, and the central control station via the network 100 from the network signal processing unit 14 20 and stored in the database 23 of the central control station 20. In the centralized control station 20, the transmission time of the interference power measurement signal by the transmission antenna directivity pattern set for the base station 10A and the measurement time of the interference power by the reception antenna directivity pattern set for the base station 10B are set. By collating, the interference power in the transmission antenna directivity pattern of the base station 10A and the reception antenna directivity pattern of the base station 10B can be acquired.

このように、各基地局１０が集中制御局２０から送信されるトリガ信号に基づいて動作することにより、各基地局１０におけるアンテナ指向性パタンごとの干渉電力の情報を効率よく収集することができる。以下、アンテナ指向性パタンごとの干渉電力の測定手順を示す各実施例について説明する。   As described above, by operating each base station 10 based on the trigger signal transmitted from the centralized control station 20, it is possible to efficiently collect information on the interference power for each antenna directivity pattern in each base station 10. . Hereinafter, each example which shows the measurement procedure of the interference electric power for every antenna directivity pattern is described.

（実施例１）
図３は、本発明の実施例１の干渉電力測定手順例を示す。
図３において、集中制御局と各基地局は、接続確認情報を送受信して接続確認を行う（Ｓ１）。なお、接続確認は、集中制御局側から行ってもよいし、基地局側から行ってもよい。ここでは、干渉電力測定用信号を送信する基地局Ａと、干渉電力測定用信号を受信して干渉電力を測定する基地局Ｂを例に説明するが、その他の基地局があっても同様である。 Example 1
FIG. 3 shows an example of an interference power measurement procedure according to the first embodiment of the present invention.
In FIG. 3, the central control station and each base station perform connection confirmation by transmitting and receiving connection confirmation information (S1). The connection check may be performed from the central control station side or from the base station side. Here, the base station A that transmits the interference power measurement signal and the base station B that receives the interference power measurement signal and measures the interference power will be described as an example, but the same applies to other base stations. is there.

集中制御局は、干渉電力測定用信号を送信する基地局Ａに対して上記の(11),(12) の情報を含むトリガ信号を送信し、干渉電力測定用信号を受信して干渉電力を測定する基地局Ｂに対して上記の(21),(22) の情報を含むトリガ信号を送信する（Ｓ２−１）。基地局Ａは、トリガ信号に記載された送信アンテナ指向性パタンＡ1 を設定し（Ｓ３−１）、指定された開始時間と終了時間の間に干渉電力測定用信号を送信する（Ｓ５−１）。   The central control station transmits a trigger signal including the above information (11) and (12) to the base station A that transmits the interference power measurement signal, receives the interference power measurement signal, and reduces the interference power. A trigger signal including the information (21) and (22) is transmitted to the base station B to be measured (S2-1). The base station A sets the transmission antenna directivity pattern A1 described in the trigger signal (S3-1), and transmits the interference power measurement signal between the designated start time and end time (S5-1). .

一方、基地局Ｂは、トリガ信号に記載された受信アンテナ指向性パタンＢ1 を設定し（Ｓ４−１）、指定された開始時間と終了時間の間に干渉電力測定用信号を受信し、干渉電力を測定する（Ｓ６−１）。さらに、基地局Ｂは、受信アンテナ指向性パタンＢ1 で測定した干渉電力（測定結果通知）を集中制御局に対して送信する（Ｓ７−１）。   On the other hand, the base station B sets the reception antenna directivity pattern B1 described in the trigger signal (S4-1), receives the interference power measurement signal between the designated start time and end time, and receives the interference power. Is measured (S6-1). Further, the base station B transmits the interference power (measurement result notification) measured with the reception antenna directivity pattern B1 to the central control station (S7-1).

これにより、集中制御局では、基地局Ａの送信アンテナ指向性パタンＡ1 と基地局Ｂの受信アンテナ指向性パタンＢ1 における基地局Ｂの干渉電力を取得することができる。このステップＳ２〜Ｓ７の処理を繰り返し（＃１，＃２，…）、トリガ信号で干渉電力を測定する送信アンテナ指向性パタンおよび受信アンテナ指向性パタンを切り替えることにより、各アンテナ指向性パタンの組合せにおける干渉電力情報を取得することができる。   Thereby, the centralized control station can acquire the interference power of the base station B in the transmission antenna directivity pattern A1 of the base station A and the reception antenna directivity pattern B1 of the base station B. The processing of steps S2 to S7 is repeated (# 1, # 2,...), And a combination of antenna directivity patterns is selected by switching between a transmit antenna directivity pattern and a receive antenna directivity pattern for measuring interference power with a trigger signal. The interference power information at can be acquired.

なお、測定対象の各基地局が同じ１つの周波数チャネルを設定することにより、各基地局の様々なアンテナ指向性パタンにおける干渉電力を効率よく測定することができるし、異なる周波数チャネルを用いることによりアンテナの周波数依存性を測定することもできる。   By setting the same frequency channel for each base station to be measured, it is possible to efficiently measure interference power in various antenna directivity patterns of each base station, and by using different frequency channels. The frequency dependence of the antenna can also be measured.

（実施例２）
図４は、本発明の実施例２の干渉電力測定手順例を示す。
実施例１は、１つの送信アンテナ指向性パタンに対して干渉電力測定用信号の送信は１回のみであったが、実施例２では、基地局Ａが１つの送信アンテナ指向性パタンに対して干渉電力測定用信号を複数回送信することを特徴とする。さらに、干渉電力測定用信号を受信する基地局Ｂでは、指定された時間内で干渉電力測定用信号を複数回受信して干渉電力を測定し、その平均化を行うことを特徴とする。 (Example 2)
FIG. 4 shows an example of an interference power measurement procedure according to the second embodiment of the present invention.
In the first embodiment, the interference power measurement signal is transmitted only once for one transmission antenna directivity pattern. However, in the second embodiment, the base station A transmits one transmission antenna directivity pattern to one transmission antenna directivity pattern. The interference power measurement signal is transmitted a plurality of times. Further, the base station B that receives the interference power measurement signal receives the interference power measurement signal a plurality of times within a specified time, measures the interference power, and averages the interference power.

図４において、接続確認（Ｓ１）、トリガ信号送信（Ｓ２−１）、送信アンテナ指向性パタンＡ1 の設定（Ｓ３−１）、受信アンテナ指向性パタンＢ1 の設定（Ｓ４−１）は、実施例１と同様である。   In FIG. 4, connection confirmation (S1), trigger signal transmission (S2-1), transmission antenna directivity pattern A1 setting (S3-1), and reception antenna directivity pattern B1 setting (S4-1) are shown in FIG. Same as 1.

干渉電力測定用信号を送信する基地局Ａに対するトリガ信号には、次の情報が設定され
る。
(11)送信アンテナ指向性パタンの設定情報
(12)設定する送信アンテナ指向性パタンで干渉電力測定用信号を送信する開始時間と終了時間を含む送信時間情報
(13)干渉電力測定用信号の送信回数（図４ではｎ回） The following information is set in the trigger signal for the base station A that transmits the interference power measurement signal.
(11) Transmission antenna directivity pattern setting information
(12) Transmission time information including the start time and end time of transmitting the interference power measurement signal with the transmission antenna directivity pattern to be set
(13) Number of transmissions of interference power measurement signal (n times in Fig. 4)

基地局Ａは、指定された開始時間と終了時間の間に干渉電力測定用信号をｎ回送信する（Ｓ５−１１〜Ｓ５−１ｎ）。ここで、干渉電力測定用信号の送信間隔は均等でもランダムでもよい。詳しくは後述の実施例４において説明する。   The base station A transmits the interference power measurement signal n times between the designated start time and end time (S5-11 to S5-1n). Here, the transmission interval of the interference power measurement signal may be equal or random. Details will be described in Example 4 to be described later.

干渉電力測定用信号を受信して干渉電力を測定する基地局Ｂに対するトリガ信号には、実施例１と同様の次の情報が設定される。
(21)受信アンテナ指向性パタンの設定情報
(22)干渉電力測定用信号を受信して干渉電力を測定する開始時間と終了時間を含む測定時間情報 The following information similar to that in the first embodiment is set in the trigger signal for the base station B that receives the interference power measurement signal and measures the interference power.
(21) Receiving antenna directivity pattern setting information
(22) Measurement time information including start time and end time of receiving interference power measurement signal and measuring interference power

基地局Ｂは、指定された測定時間中に干渉電力測定用信号を最大ｎ回受信し、干渉電力を測定する（Ｓ６−１）。すなわち、基地局Ｂでは、ｎ回送信された干渉電力測定用信号のすべてが受信できなくても、いくつかの干渉電力測定用信号の受信が可能としている。これにより、基地局Ｂにおいて干渉電力測定用信号を取りこぼしなく受信して干渉電力を測定することができる。さらに、基地局Ｂは、受信アンテナ指向性パタンＢ1 で最大ｎ回測定した干渉電力の平均化を行い（Ｓ８−１）、その測定結果を集中制御局に対して送信する（Ｓ７−１）。これにより、測定する干渉電力の精度を高めることができる。   The base station B receives the interference power measurement signal at most n times during the designated measurement time, and measures the interference power (S6-1). That is, the base station B can receive several interference power measurement signals even if not all of the interference power measurement signals transmitted n times can be received. Thereby, the base station B can receive the interference power measurement signal without missing and measure the interference power. Further, the base station B averages the interference power measured at most n times with the receiving antenna directivity pattern B1 (S8-1), and transmits the measurement result to the centralized control station (S7-1). Thereby, the accuracy of the interference power to be measured can be increased.

このステップＳ２〜Ｓ８の処理を繰り返し、実施例１のようにトリガ信号で干渉電力を測定するアンテナ指向性パタンを切り替えることにより、異なるアンテナ指向性パタンにおける干渉電力情報を取得することができる。   By repeating the processes in steps S2 to S8 and switching the antenna directivity pattern for measuring the interference power with the trigger signal as in the first embodiment, the interference power information in different antenna directivity patterns can be acquired.

（実施例３）
図５は、本発明の実施例３の干渉電力測定手順例を示す。
実施例２は、図４のステップＳ６−１において、干渉電力測定用信号を受信し、干渉電力を測定する開始時間から終了時間が連続する測定時間であったが、実施例３は、基地局Ｂにおける測定時間を複数回（図５ではｍ回）に分ける設定である。そのため、基地局Ａがｎ回送信する干渉電力測定用信号の全部を受信できない場合もあるが、ステップＳ８−１において複数回受信した干渉電力の平均化を行うことにより大きな支障はない。 (Example 3)
FIG. 5 shows an example of an interference power measurement procedure according to the third embodiment of the present invention.
The second embodiment is a measurement time in which the interference power measurement signal is received and the end time is continuously measured from the start time for measuring the interference power in step S6-1 in FIG. In this setting, the measurement time in B is divided into a plurality of times (m times in FIG. 5). Therefore, there are cases where the base station A cannot receive all the interference power measurement signals transmitted n times, but there is no major problem by averaging the interference power received a plurality of times in step S8-1.

干渉電力測定用信号を送信する基地局Ａに対するトリガ信号には、実施例２と同様の次の情報が設定される。
(11)送信アンテナ指向性パタンの設定情報
(12)設定する送信アンテナ指向性パタンで干渉電力測定用信号を送信する開始時間と終了時間を含む送信時間情報
(13)干渉電力測定用信号の送信回数（図５ではｎ回） In the trigger signal for the base station A that transmits the interference power measurement signal, the following information similar to that in the second embodiment is set.
(11) Transmission antenna directivity pattern setting information
(12) Transmission time information including the start time and end time of transmitting the interference power measurement signal with the transmission antenna directivity pattern to be set
(13) Number of transmissions of interference power measurement signal (n times in Fig. 5)

干渉電力測定用信号を受信して干渉電力を測定する基地局Ｂに対するトリガ信号には、次の情報が設定される。
(21)受信アンテナ指向性パタンの設定情報
(22a) 干渉電力測定用信号を受信して干渉電力を測定する開始時間と終了時間を複数ｍ回に分けて設定する測定時間情報 The following information is set in the trigger signal for the base station B that receives the interference power measurement signal and measures the interference power.
(21) Receiving antenna directivity pattern setting information
(22a) Measurement time information that sets the start time and end time for receiving interference power measurement signal and measuring interference power divided into multiple m times

基地局Ｂは、ステップＳ６−１１〜Ｓ６−１ｍに示すように、ｍ回に分けて受信アンテ
ナ指向性パタンＢ1 における干渉電力が測定され、平均化される。また、各測定時間中に複数の干渉電力測定用信号を受信する場合と、干渉電力測定用信号をまったく受信できない場合が混在しても、全体でｎ回送信された干渉電力測定用信号のうちいくつかの干渉電力測定用信号を受信できれば、その干渉電力の平均をとって集中制御局に送信することができる。 As shown in steps S6-11 to S6-1m, the base station B measures and averages the interference power in the reception antenna directivity pattern B1 in m times. In addition, even if a case where a plurality of interference power measurement signals are received during each measurement time and a case where the interference power measurement signals cannot be received at all are mixed, the interference power measurement signals transmitted n times in total If several interference power measurement signals can be received, the interference power can be averaged and transmitted to the centralized control station.

（実施例４）
図６は、本発明の実施例４の干渉電力測定手順例を示す。
実施例１〜実施例３は、干渉電力測定用信号を送信する基地局Ａと、干渉電力測定用信号を受信して干渉電力を測定する基地局Ｂが異なる設定であった。実施例４は、１つの基地局が干渉電力測定用信号を送信する動作と、干渉電力測定用信号を受信して干渉電力を測定する動作を行うことを前提に、基地局Ａが複数ｎ回送信する干渉電力測定用信号の送信間隔t1と、基地局Ｂが複数ｍ回送信する干渉電力測定用信号の送信間隔t2が異なる設定とする。これにより、各基地局は干渉電力測定用信号を送信していない時間に、他の基地局が送信する干渉電力測定用信号を受信して干渉電力を測定する処理が可能となる。 Example 4
FIG. 6 shows an example of an interference power measurement procedure according to the fourth embodiment of the present invention.
In the first to third embodiments, the base station A that transmits the interference power measurement signal is different from the base station B that receives the interference power measurement signal and measures the interference power. The fourth embodiment is based on the assumption that one base station performs an operation of transmitting an interference power measurement signal and an operation of receiving the interference power measurement signal and measuring the interference power a plurality of times. Assume that the transmission interval t1 of the interference power measurement signal to be transmitted is different from the transmission interval t2 of the interference power measurement signal to be transmitted m times by the base station B. As a result, each base station can receive the interference power measurement signal transmitted by another base station and measure the interference power during the time when the interference power measurement signal is not transmitted.

図６において、接続確認（Ｓ１）、トリガ信号送信（Ｓ２−１）、送信アンテナ指向性パタンＡ1 の設定（Ｓ３−１）、受信アンテナ指向性パタンＢ1 の設定（Ｓ４−１）は、実施例１〜実施例３と同様である。   In FIG. 6, connection confirmation (S1), trigger signal transmission (S2-1), transmission antenna directivity pattern A1 setting (S3-1), and reception antenna directivity pattern B1 setting (S4-1) are shown in FIG. 1 to Example 3.

基地局Ａおよび基地局Ｂに対するトリガ信号には、次の情報が設定される。
(11)送信アンテナ指向性パタンの設定情報
(12)設定する送信アンテナ指向性パタンで干渉電力測定用信号を送信する開始時間と終了時間を含む送信時間情報
(13)干渉電力測定用信号の送信回数（基地局Ａにはｎ回、基地局Ｂにはｍ回）
(14)干渉電力測定用信号の送信間隔（基地局Ａにはt1、基地局Ｂにはt2）
(21)受信アンテナ指向性パタンの設定情報
(22)干渉電力測定用信号を受信して干渉電力を測定する開始時間と終了時間を含む測定時間情報 The trigger signal for base station A and base station B is set with the following information.
(11) Transmission antenna directivity pattern setting information
(12) Transmission time information including the start time and end time of transmitting the interference power measurement signal with the transmission antenna directivity pattern to be set
(13) Number of transmissions of interference power measurement signal (n times for base station A, m times for base station B)
(14) Interference power measurement signal transmission interval (t1 for base station A, t2 for base station B)
(21) Receiving antenna directivity pattern setting information
(22) Measurement time information including start time and end time of receiving interference power measurement signal and measuring interference power

基地局Ａは、トリガ信号に記載された送信アンテナ指向性パタンＡ11を設定し（Ｓ３−Ａ）、さらに受信アンテナ指向性パタンＡ12を設定し（Ｓ４−Ａ）、指定された開始時間と終了時間の間に干渉電力測定用信号を、送信間隔t1でｎ回送信する（Ｓ５−Ａ１〜Ｓ５−Ａｎ）。基地局Ｂは、トリガ信号に記載された送信アンテナ指向性パタンＢ11を設定し（Ｓ３−Ｂ）、さらに受信アンテナ指向性パタンＢ12を設定し（Ｓ４−Ｂ）、指定された開始時間と終了時間の間に干渉電力測定用信号を、送信間隔t2でｍ回送信する（Ｓ５−Ｂ１〜Ｓ５−Ｂｍ）。   The base station A sets the transmission antenna directivity pattern A11 described in the trigger signal (S3-A), further sets the reception antenna directivity pattern A12 (S4-A), and the designated start time and end time. In the meantime, the interference power measurement signal is transmitted n times at the transmission interval t1 (S5-A1 to S5-An). The base station B sets the transmission antenna directivity pattern B11 described in the trigger signal (S3-B), further sets the reception antenna directivity pattern B12 (S4-B), and the designated start time and end time. In the meantime, the interference power measurement signal is transmitted m times at the transmission interval t2 (S5-B1 to S5-Bm).

基地局Ａは、指定された測定時間中に干渉電力測定用信号を最大ｍ回受信し、干渉電力を測定する（Ｓ６−Ａ）。基地局Ｂは、指定された測定時間中に干渉電力測定用信号を最大ｎ回受信し、干渉電力を測定する（Ｓ６−Ｂ）。   The base station A receives the interference power measurement signal at most m times during the designated measurement time, and measures the interference power (S6-A). The base station B receives the interference power measurement signal at most n times during the designated measurement time, and measures the interference power (S6-B).

ここで、基地局Ａにおける干渉電力測定用信号の送信間隔t1と、基地局Ｂにおける干渉電力測定用信号の送信間隔t2が異なる設定とすることにより、一方の基地局において、干渉電力測定用信号を送信していない時間に他方の基地局が送信する干渉電力測定用信号を受信して干渉電力を測定することができる。さらに、基地局Ａは、受信アンテナ指向性パタンＡ12で最大ｍ回測定した干渉電力の平均化を行い（Ｓ８−Ａ）、その測定結果を集中制御局に対して送信する（Ｓ７−Ａ）。基地局Ｂは、受信アンテナ指向性パタンＢ12で最大ｎ回測定した干渉電力の平均化を行い（Ｓ８−Ｂ）、その測定結果を集中制御局に対して送信する（Ｓ７−Ｂ）。   Here, by setting the transmission interval t1 of the interference power measurement signal at the base station A and the transmission interval t2 of the interference power measurement signal at the base station B to be different, the interference power measurement signal at one base station is set. The interference power can be measured by receiving the interference power measurement signal transmitted by the other base station during the time when the signal is not transmitted. Further, the base station A averages the interference power measured at most m times with the receiving antenna directivity pattern A12 (S8-A), and transmits the measurement result to the centralized control station (S7-A). The base station B averages the interference power measured at most n times with the receiving antenna directivity pattern B12 (S8-B), and transmits the measurement result to the centralized control station (S7-B).

集中制御局は、基地局Ａの送信アンテナ指向性パタンＡ11と基地局Ｂの受信アンテナ指向性パタンＢ12の組合せにおける干渉電力と、基地局Ｂの送信アンテナ指向性パタンＢ11と基地局Ａの受信アンテナ指向性パタンＡ12の組合せにおける干渉電力を、同じ測定時間中に効率よく取得することができる。   The centralized control station uses the interference power in the combination of the transmission antenna directivity pattern A11 of the base station A and the reception antenna directivity pattern B12 of the base station B, the transmission antenna directivity pattern B11 of the base station B, and the reception antenna of the base station A. The interference power in the combination of the directivity patterns A12 can be efficiently acquired during the same measurement time.

このように、基地局Ａ，Ｂ以外の基地局があっても、トリガ信号で設定する(14)干渉電力測定用信号の送信間隔をそれぞれ固有の値とすることにより、干渉電力測定用信号の非送信中に他の基地局が送信する干渉電力測定用信号を受信して干渉電力を測定することが可能であり、複数の基地局における干渉電力を効率よく取得することができる。   Thus, even if there is a base station other than the base stations A and B, (14) by setting the transmission interval of the interference power measurement signal set by the trigger signal to a unique value, the interference power measurement signal Interference power measurement signals transmitted from other base stations during non-transmission can be received and the interference power can be measured, and interference powers at a plurality of base stations can be efficiently acquired.

ここで、基地局Ａの干渉電力測定用信号の送信間隔t1と、基地局Ｂの干渉電力測定用信号の送信間隔t2がランダムであっても、各基地局の送受信タイミングの競合を回避して同様の効果を得ることができる。その場合には、基地局Ａに対して送信間隔をt1±αの範囲でランダムに設定するように指示し、基地局Ｂに対して送信間隔をt2±αの範囲でランダムに設定するように指示すればよい。   Here, even if the transmission interval t1 of the interference power measurement signal of the base station A and the transmission interval t2 of the interference power measurement signal of the base station B are random, it avoids contention between transmission and reception timings of each base station. Similar effects can be obtained. In that case, the base station A is instructed to set the transmission interval randomly in the range of t1 ± α, and the base station B is set to randomly set the transmission interval in the range of t2 ± α. All you need to do is point.

また、各基地局における干渉電力測定用信号の測定時間は、実施例３のように複数回に分けて設定してもよい。その場合、基地局Ａ，Ｂは、それぞれ干渉電力測定用信号の送信時間を避けて干渉電力測定用信号の測定時間が設定される。   Further, the measurement time of the interference power measurement signal in each base station may be set in a plurality of times as in the third embodiment. In this case, the base stations A and B each set the measurement time of the interference power measurement signal while avoiding the transmission time of the interference power measurement signal.

（実施例５）
図７は、本発明の実施例５の干渉電力測定手順例を示す。
実施例５は、１つのトリガ信号に対して、干渉電力測定用信号を送信する基地局が複数の送信アンテナ指向性パタンを順次切り替えて設定し、干渉電力測定用信号を受信して干渉電力を測定する基地局が１つの受信アンテナ指向性パタンで、送信アンテナ指向性パタンごとに干渉電力を測定することを特徴とする。 (Example 5)
FIG. 7 shows an example of an interference power measurement procedure according to the fifth embodiment of the present invention.
In the fifth embodiment, for one trigger signal, a base station that transmits an interference power measurement signal sequentially sets a plurality of transmission antenna directivity patterns, receives the interference power measurement signal, and sets the interference power. The base station to measure is one reception antenna directivity pattern, and the interference power is measured for each transmission antenna directivity pattern.

図７において、接続確認（Ｓ１）、トリガ信号送信（Ｓ２−１）は、実施例１と同様である。   In FIG. 7, connection confirmation (S1) and trigger signal transmission (S2-1) are the same as those in the first embodiment.

干渉電力測定用信号を送信する基地局Ａに対するトリガ信号には、次の情報が設定される。
(11a) 複数の送信アンテナ指向性パタンの設定情報
(12a) 送信アンテナ指向性パタンごとに干渉電力測定用信号を送信する開始時間と終了時間を含む複数の送信時間情報
(13a) 送信アンテナ指向性パタンごとの干渉電力測定用信号の送信回数 The following information is set in the trigger signal for the base station A that transmits the interference power measurement signal.
(11a) Setting information for multiple transmit antenna directivity patterns
(12a) Multiple transmission time information including start time and end time for transmitting interference power measurement signal for each transmission antenna directivity pattern
(13a) Number of transmissions of interference power measurement signal for each transmit antenna directivity pattern

基地局Ａは、トリガ信号に記載された送信アンテナ指向性パタンＡ1 〜Ａn を順次設定し（Ｓ３−１１〜Ｓ３−１ｎ）、それぞれ指定された開始時間と終了時間の間に干渉電力測定用信号を複数回（ここでは２回）送信する（Ｓ５−１１，Ｓ５−１２，〜，Ｓ５−ｎ１，Ｓ５−ｎ２）。   The base station A sequentially sets the transmission antenna directivity patterns A1 to An described in the trigger signal (S3-11 to S3-1n), and signals for measuring interference power between the specified start time and end time, respectively. Are transmitted a plurality of times (here, twice) (S5-11, S5-12,..., S5-n1, S5-n2).

干渉電力測定用信号を受信して干渉電力を測定する基地局Ｂに対するトリガ信号には、次の情報が設定される。
(21)受信アンテナ指向性パタンの設定情報
(22b) 送信アンテナ指向性パタンごとに干渉電力測定用信号を受信して干渉電力を測定する開始時間と終了時間を複数の測定時間情報 The following information is set in the trigger signal for the base station B that receives the interference power measurement signal and measures the interference power.
(21) Receiving antenna directivity pattern setting information
(22b) Start time and end time for receiving interference power measurement signal for each transmit antenna directivity pattern and measuring interference power

ここで、基地局Ａに設定する情報(12a) の送信アンテナ指向性パタンごとの送信時間と
、基地局Ｂに設定する情報（22b)の送信アンテナ指向性パタンごとの測定時間が同期するように設定される。基地局Ｂは、ステップＳ６−１１〜Ｓ６−１ｎに示すように、送信アンテナ指向性パタンＡ1 〜Ａn ごとに受信アンテナ指向性パタンＢ1 における干渉電力を測定し、その都度平均化する。すなわち、ステップＳ６−１１の測定時間では、基地局Ａの送信アンテナ指向性パタンＡ1 と基地局Ｂの受信アンテナ指向性パタンＢ1 の組合せにおける干渉電力を測定し、平均化する（Ｓ８−１１）。ステップＳ６−１ｎ，Ｓ８−１ｎにおいても同様である。 Here, the transmission time for each transmission antenna directivity pattern of the information (12a) set in the base station A is synchronized with the measurement time for each transmission antenna directivity pattern of the information (22b) set in the base station B. Is set. As shown in steps S6-11 to S6-1n, the base station B measures the interference power in the reception antenna directivity pattern B1 for each of the transmission antenna directivity patterns A1 to An, and averages each time. That is, in the measurement time of step S6-11, the interference power in the combination of the transmission antenna directivity pattern A1 of the base station A and the reception antenna directivity pattern B1 of the base station B is measured and averaged (S8-11). The same applies to steps S6-1n and S8-1n.

このように、基地局Ｂでは１つの受信アンテナ指向性パタンＢ1 において、基地局Ａが送信アンテナ指向性パタンＡ11〜Ａ1nを切り替えるごとに干渉電力測定用信号を受信して干渉電力を測定および平均化する。さらに、基地局Ｂは、送信アンテナ指向性パタンＡ11〜Ａ1nと１つの受信アンテナ指向性パタンＢ1 の組合せにおける干渉電力をまとめて集中制御局に送信する（Ｓ７−１）。   In this way, in the base station B, the interference power measurement signal is received and the interference power is measured and averaged every time the base station A switches the transmission antenna directivity patterns A11 to A1n in one reception antenna directivity pattern B1. To do. Further, the base station B collectively transmits the interference power in the combination of the transmission antenna directivity patterns A11 to A1n and one reception antenna directivity pattern B1 to the centralized control station (S7-1).

このステップＳ２〜Ｓ８の処理を繰り返し、トリガ信号で干渉電力を測定する基地局Ｂの受信アンテナ指向性パタンを切り替えることにより、異なるアンテナ指向性パタンにおける干渉電力情報を取得することができる。   By repeating the processes in steps S2 to S8 and switching the reception antenna directivity pattern of the base station B that measures the interference power with the trigger signal, interference power information in different antenna directivity patterns can be acquired.

なお、基地局Ｂにおける各送信アンテナ指向性パタンに対する干渉電力測定用信号の測定時間については、実施例３と同様に複数回に分けて設定してもよい。また、基地局Ａにおける各送信アンテナ指向性パタンの干渉電力測定用信号の送信回数および送信間隔については、実施例４と同様に、基地局Ｂが干渉電力測定用信号を送信する構成と組合せて設定してもよい。   Note that the measurement time of the interference power measurement signal for each transmission antenna directivity pattern in the base station B may be set in a plurality of times as in the third embodiment. Further, the number of transmissions and the transmission interval of the interference power measurement signal of each transmission antenna directivity pattern in the base station A are combined with the configuration in which the base station B transmits the interference power measurement signal, as in the fourth embodiment. It may be set.

（実施例６）
図８は、本発明の実施例６の干渉電力測定手順例を示す。
実施例６は、１つのトリガ信号に対して、干渉電力測定用信号を送信する基地局が１つの送信アンテナ指向性パタンに設定し、干渉電力測定用信号を受信する基地局が複数の受信アンテナ指向性パタンを順次切り替えて設定し、受信アンテナ指向性パタンごとに干渉電力を測定することを特徴とする。 (Example 6)
FIG. 8 shows an example of an interference power measurement procedure according to the sixth embodiment of the present invention.
In the sixth embodiment, for one trigger signal, a base station that transmits an interference power measurement signal sets one transmission antenna directivity pattern, and a base station that receives an interference power measurement signal has a plurality of reception antennas. The directivity pattern is sequentially switched and set, and the interference power is measured for each reception antenna directivity pattern.

図８において、接続確認（Ｓ１）、トリガ信号送信（Ｓ２−１）、送信アンテナ指向性パタンＡ1 の設定（Ｓ３−１）、受信アンテナ指向性パタンＢ1 の設定（Ｓ４−１）は、実施例１と同様である。   In FIG. 8, connection confirmation (S1), trigger signal transmission (S2-1), transmission antenna directivity pattern A1 setting (S3-1), and reception antenna directivity pattern B1 setting (S4-1) are shown in FIG. Same as 1.

干渉電力測定用信号を送信する基地局Ａに対するトリガ信号には、実施例２，３と同様の次の情報が設定される。
(11)送信アンテナ指向性パタンの設定情報
(12)送信アンテナ指向性パタンで干渉電力測定用信号を送信する開始時間と終了時間を含む送信時間情報
(13)干渉電力測定用信号の送信回数（図８ではｎ回） In the trigger signal for the base station A that transmits the interference power measurement signal, the following information similar to the second and third embodiments is set.
(11) Transmission antenna directivity pattern setting information
(12) Transmission time information including start time and end time for transmitting interference power measurement signal with transmit antenna directivity pattern
(13) Number of transmissions of interference power measurement signal (n times in Fig. 8)

基地局Ａは、トリガ信号に記載された送信アンテナ指向性パタンＡ1 を設定し（Ｓ３−１）、指定された開始時間と終了時間の間に干渉電力測定用信号を複数回（ここではｎ回）送信する（Ｓ５−１１〜Ｓ５−１ｎ）。   The base station A sets the transmission antenna directivity pattern A1 described in the trigger signal (S3-1), and transmits the interference power measurement signal a plurality of times (here, n times) between the designated start time and end time. ) Transmit (S5-11 to S5-1n).

干渉電力測定用信号を受信して干渉電力を測定する基地局Ｂに対するトリガ信号には、次の情報が設定される。
(21a) 複数の受信アンテナ指向性パタンの設定情報
(22c) 受信アンテナ指向性パタンごとに干渉電力測定用信号を受信して干渉電力を測定
する開始時間と終了時間を設定する複数の測定時間情報 The following information is set in the trigger signal for the base station B that receives the interference power measurement signal and measures the interference power.
(21a) Setting information for multiple receiving antenna directivity patterns
(22c) Multiple measurement time information that sets the start time and end time for receiving the interference power measurement signal for each receiving antenna directivity pattern and measuring the interference power

基地局Ｂは、トリガ信号に記載された受信アンテナ指向性パタンＢ1 〜Ｂm を順次設定し（Ｓ４−１１〜Ｓ４−１ｍ）、それぞれ指定された開始時間と終了時間の間に干渉電力測定用信号を受信して干渉電力を測定し（Ｓ６−１１〜Ｓ６−１ｍ）、それぞれ平均化される（Ｓ８−１１〜Ｓ８−１ｍ）。   The base station B sequentially sets the receiving antenna directivity patterns B1 to Bm described in the trigger signal (S4-11 to S4-1m), and the interference power measurement signal between the designated start time and end time, respectively. , And the interference power is measured (S6-11 to S6-1m) and averaged (S8-11 to S8-1m).

このように、基地局Ｂでは受信アンテナ指向性パタンＢ１〜Ｂm を切り替えるごとに、基地局Ａが送信アンテナ指向性パタンＡ1 で送信した干渉電力測定用信号を受信して干渉電力を測定および平均化する。さらに、基地局Ｂは、１つの送信アンテナ指向性パタンと受信アンテナ指向性パタンＢ１〜Ｂm の組合せにおける干渉電力をまとめて集中制御局に送信する（Ｓ７−１）。   Thus, every time the base station B switches the reception antenna directivity patterns B1 to Bm, the base station A receives the interference power measurement signal transmitted by the transmission antenna directivity pattern A1, and measures and averages the interference power. To do. Further, the base station B collectively transmits the interference power in the combination of one transmission antenna directivity pattern and reception antenna directivity patterns B1 to Bm to the centralized control station (S7-1).

このステップＳ２〜Ｓ８の処理を繰り返し、トリガ信号で干渉電力測定用信号を送信する基地局Ａの送信アンテナ指向性パタンを切り替えることにより、異なるアンテナ指向性パタンにおける干渉電力情報を取得することができる。   By repeating the processes in steps S2 to S8 and switching the transmission antenna directivity pattern of the base station A that transmits the interference power measurement signal using the trigger signal, interference power information in different antenna directivity patterns can be acquired. .

なお、基地局Ｂにおける各送信アンテナ指向性パタンに対する干渉電力測定用信号の測定時間については、実施例３と同様に複数回に分けて設定してもよい。また、基地局Ａにおける干渉電力測定用信号の送信回数および送信間隔については、実施例４と同様に、基地局Ｂが干渉電力測定用信号を送信する構成と組合せて設定してもよい。   Note that the measurement time of the interference power measurement signal for each transmission antenna directivity pattern in the base station B may be set in a plurality of times as in the third embodiment. Further, the number of transmissions and the transmission interval of the interference power measurement signal in the base station A may be set in combination with the configuration in which the base station B transmits the interference power measurement signal, as in the fourth embodiment.

以上説明した実施例１〜実施例６の処理手順は、図２に示す集中制御局２０のトリガ信号生成部２２で生成されるトリガ信号に基づいて、基地局１０の情報処理部１５、無線信号処理部１３、アンテナ制御部１２が図３〜図８に示す処理を実行することにより実現することができる。これらの構成および機能は、専用のハードウェアで実現するだけでなく、各機能部を実現するためのプログラムをコンピュータ読み取り可能な記録媒体に記録し、この記録媒体に記録されたプログラムをコンピュータに読み込ませ、実行することにより実現させることができる。また、当該プログラムは記録媒体に記録するだけでなく、ネットワークを通して提供することも可能である。   The processing procedures of the first to sixth embodiments described above are based on the trigger signal generated by the trigger signal generating unit 22 of the centralized control station 20 shown in FIG. This can be realized by the processing unit 13 and the antenna control unit 12 executing the processes shown in FIGS. These configurations and functions are not only realized by dedicated hardware, but also a program for realizing each functional unit is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer. And can be realized by executing. Further, the program can be provided not only on a recording medium but also via a network.

１０ 基地局
１１ アンテナ素子
１２ アンテナ制御部
１３ 無線信号処理部
１４ ネットワーク信号処理部
１５ 情報処理部
１６ 記憶部
２０ 集中制御局
２１ ネットワーク信号処理部
２２ トリガ信号生成部
２３ データベース DESCRIPTION OF SYMBOLS 10 Base station 11 Antenna element 12 Antenna control part 13 Wireless signal processing part 14 Network signal processing part 15 Information processing part 16 Storage part 20 Centralized control station 21 Network signal processing part 22 Trigger signal generation part 23 Database

Claims (12)

複数の基地局がそれぞれアンテナ指向性パタンを選択し、帰属する端末局と無線通信を行う無線通信システムで、アンテナ指向性パタンごとに基地局間の干渉電力を測定する干渉電力測定方法において、
前記複数の基地局に接続される集中制御局が、前記複数の基地局に対してアンテナ指向性パタンを設定し、そのアンテナ指向性パタンで干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定時間を設定するトリガ信号を送信するステップ１と、
前記複数の基地局のうち前記干渉電力測定用信号を送信する基地局は、自局宛の前記トリガ信号で設定される送信アンテナ指向性パタンを設定し、前記送信時間中に前記干渉電力測定用信号を送信するステップ２と、
前記複数の基地局のうち前記干渉電力測定用信号を受信する基地局は、自局宛の前記トリガ信号で設定される受信アンテナ指向性パタンを設定し、前記受信時間中に前記干渉電力測定用信号を受信して干渉電力を測定し、その干渉電力の情報を前記集中制御局に送信するステップ３と
を有することを特徴とする干渉電力測定方法。 In a radio communication system in which a plurality of base stations select an antenna directivity pattern and perform radio communication with a terminal station to which the base station belongs, an interference power measurement method for measuring interference power between base stations for each antenna directivity pattern,
A centralized control station connected to the plurality of base stations sets an antenna directivity pattern for the plurality of base stations, and sets a transmission time and interference power for transmitting an interference power measurement signal using the antenna directivity pattern. Transmitting a trigger signal for setting a measurement time to be measured;
A base station that transmits the interference power measurement signal among the plurality of base stations sets a transmission antenna directivity pattern set by the trigger signal addressed to the local station, and the interference power measurement signal is transmitted during the transmission time. Step 2 of transmitting a signal;
A base station that receives the interference power measurement signal among the plurality of base stations sets a reception antenna directivity pattern that is set by the trigger signal addressed to the local station, and is configured to measure the interference power during the reception time. Receiving the signal, measuring the interference power, and transmitting information on the interference power to the centralized control station (3). 請求項１に記載の干渉電力測定方法において、
前記ステップ１で、前記トリガ信号により前記送信時間中に前記干渉電力測定用信号を複数回送信する設定とし、
前記ステップ２で、前記干渉電力測定用信号を送信する基地局は、前記送信時間中に前記干渉電力測定用信号を複数回送信し、
前記ステップ３で、前記干渉電力測定用信号を受信する基地局は、前記受信時間中に前記干渉電力測定用信号を受信して測定した干渉電力の平均値をとり、その干渉電力の平均値を前記集中制御局に送信する
ことを特徴とする干渉電力測定方法。 The interference power measurement method according to claim 1,
In step 1, the trigger signal is set to transmit the interference power measurement signal a plurality of times during the transmission time,
In the step 2, the base station that transmits the interference power measurement signal transmits the interference power measurement signal a plurality of times during the transmission time,
In step 3, the base station receiving the interference power measurement signal takes an average value of the interference power measured by receiving the interference power measurement signal during the reception time, and calculates the average value of the interference power. An interference power measurement method, comprising: transmitting to the centralized control station. 請求項２に記載の干渉電力測定方法において、
前記ステップ１で、前記トリガ信号により前記干渉電力測定用信号の受信時間を複数回に分けて設定し、
前記ステップ３で、前記干渉電力測定用信号を受信する基地局は、前記受信時間ごとに前記干渉電力測定用信号を受信して測定した干渉電力の平均値をとる
ことを特徴とする干渉電力測定方法。 The interference power measurement method according to claim 2,
In step 1, the reception time of the interference power measurement signal is set in a plurality of times by the trigger signal,
In the step 3, the base station that receives the interference power measurement signal takes an average value of the interference power measured by receiving the interference power measurement signal at each reception time. Method. 請求項２に記載の干渉電力測定方法において、
前記ステップ１で、前記トリガ信号により前記送信時間中に前記干渉電力測定用信号を送信する送信間隔を前記基地局ごとに異なる設定とし、
前記ステップ２で、前記干渉電力測定用信号を送信する基地局は、前記送信時間中に前記干渉電力測定用信号を前記基地局ごとに異なる送信間隔で送信する
ことを特徴とする干渉電力測定方法。 The interference power measurement method according to claim 2,
In the step 1, the transmission interval for transmitting the interference power measurement signal during the transmission time by the trigger signal is set differently for each base station,
In the step 2, the base station that transmits the interference power measurement signal transmits the interference power measurement signal at different transmission intervals for each base station during the transmission time. . 請求項２〜請求項４のいずれかに記載の干渉電力測定方法において、
前記ステップ１で、前記トリガ信号により複数の前記送信アンテナ指向性パタンを切り替える設定とし、前記送信アンテナ指向性パタンごとに干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定時間を設定し、
前記ステップ２で、前記干渉電力測定用信号を送信する基地局は、前記送信アンテナ指向性パタンを切り替えながら、送信アンテナ指向性パタンごとの送信時間中に前記干渉電力測定用信号を送信し、
前記ステップ３で、前記干渉電力測定用信号を受信する基地局は、前記送信アンテナ指向性パタンごとの受信時間に前記干渉電力測定用信号を受信して干渉電力を測定し、前記
送信アンテナ指向性パタンごとの干渉電力の平均値を前記集中制御局に送信する
ことを特徴とする干渉電力測定方法。 In the interference power measuring method according to any one of claims 2 to 4,
In step 1, a plurality of transmission antenna directivity patterns are set to be switched by the trigger signal, and a transmission time for transmitting an interference power measurement signal and a measurement time for measuring interference power are set for each transmission antenna directivity pattern. And
In Step 2, the base station that transmits the interference power measurement signal transmits the interference power measurement signal during a transmission time for each transmission antenna directivity pattern while switching the transmission antenna directivity pattern.
In step 3, the base station that receives the interference power measurement signal receives the interference power measurement signal at a reception time for each transmission antenna directivity pattern, measures the interference power, and transmits the transmission antenna directivity. An average value of interference power for each pattern is transmitted to the centralized control station. 請求項２〜請求項４のいずれかに記載の干渉電力測定方法において、
前記ステップ１で、前記トリガ信号により複数の前記受信アンテナ指向性パタンを切り替える設定とし、受信アンテナ指向性パタンごとに干渉電力測定用信号の干渉電力を測定する測定時間を設定し、
前記ステップ３で、前記干渉電力測定用信号を受信する基地局は、前記受信アンテナ指向性パタンを切り替えながら、前記受信アンテナ指向性パタンごとの受信時間中に前記干渉電力測定用信号を受信して干渉電力を測定し、前記受信アンテナ指向性パタンごとの干渉電力の平均値を前記集中制御局に送信する
ことを特徴とする干渉電力測定方法。 In the interference power measuring method according to any one of claims 2 to 4,
In step 1, a setting is made to switch a plurality of reception antenna directivity patterns by the trigger signal, and a measurement time for measuring the interference power of the interference power measurement signal is set for each reception antenna directivity pattern.
In step 3, the base station that receives the interference power measurement signal receives the interference power measurement signal during the reception time for each reception antenna directivity pattern while switching the reception antenna directivity pattern. An interference power measurement method, comprising: measuring interference power and transmitting an average value of interference power for each reception antenna directivity pattern to the centralized control station. 複数の基地局がそれぞれアンテナ指向性パタンを選択し、帰属する端末局と無線通信を行う無線通信システムで、アンテナ指向性パタンごとに基地局間の干渉電力を測定する干渉電力測定装置において、
前記複数の基地局に対してアンテナ指向性パタンを設定し、そのアンテナ指向性パタンで干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定時間を設定するトリガ信号を送信する集中制御局と、
前記複数の基地局のうち、自局宛の前記トリガ信号で設定される送信アンテナ指向性パタンを設定し、前記送信時間中に前記干渉電力測定用信号を送信する第１の基地局と、
前記複数の基地局のうち、自局宛の前記トリガ信号で設定される受信アンテナ指向性パタンを設定し、前記受信時間中に前記干渉電力測定用信号を受信して干渉電力を測定し、その干渉電力の情報を前記集中制御局に送信する第２の基地局と
を備えたことを特徴とする干渉電力測定装置。 In a wireless communication system in which a plurality of base stations select an antenna directivity pattern and perform wireless communication with a terminal station to which the base station belongs, an interference power measurement apparatus that measures interference power between base stations for each antenna directivity pattern,
Centralized control for transmitting a trigger signal for setting an antenna directivity pattern for the plurality of base stations, setting a transmission time for transmitting an interference power measurement signal using the antenna directivity pattern, and a measurement time for measuring the interference power Bureau,
Among the plurality of base stations, a first base station that sets a transmission antenna directivity pattern set by the trigger signal addressed to the own station, and transmits the interference power measurement signal during the transmission time;
Among the plurality of base stations, set a reception antenna directivity pattern set by the trigger signal addressed to the own station, receive the interference power measurement signal during the reception time, measure the interference power, An interference power measurement apparatus comprising: a second base station that transmits information on interference power to the centralized control station. 請求項７に記載の干渉電力測定装置において、
前記集中制御局は、前記トリガ信号により前記送信時間中に前記干渉電力測定用信号を複数回送信する設定を行い、
前記干渉電力測定用信号を送信する前記第１の基地局は、前記送信時間中に前記干渉電力測定用信号を複数回送信する構成であり、
前記干渉電力測定用信号を受信する前記第２の基地局は、前記受信時間中に前記干渉電力測定用信号を受信して測定した干渉電力の平均値をとり、その干渉電力の平均値を前記集中制御局に送信する構成である
ことを特徴とする干渉電力測定装置。 The interference power measuring device according to claim 7,
The centralized control station performs setting to transmit the interference power measurement signal a plurality of times during the transmission time by the trigger signal,
The first base station that transmits the interference power measurement signal is configured to transmit the interference power measurement signal a plurality of times during the transmission time,
The second base station that receives the interference power measurement signal takes an average value of the interference power measured by receiving the interference power measurement signal during the reception time, and calculates the average value of the interference power. An interference power measuring apparatus, characterized by being configured to transmit to a centralized control station. 請求項８に記載の干渉電力測定装置において、
前記集中制御局は、前記トリガ信号により前記干渉電力測定用信号の受信時間を複数回に分けて設定し、
前記干渉電力測定用信号を受信する前記第２の基地局は、前記受信時間ごとに前記干渉電力測定用信号を受信して測定した干渉電力の平均値をとる構成である
ことを特徴とする干渉電力測定装置。 The interference power measuring apparatus according to claim 8, wherein
The centralized control station sets the reception time of the interference power measurement signal in a plurality of times by the trigger signal,
The second base station that receives the interference power measurement signal is configured to take an average value of the interference power measured by receiving the interference power measurement signal for each reception time. Power measuring device. 請求項８に記載の干渉電力測定装置において、
前記集中制御局は、前記トリガ信号により前記送信時間中に前記干渉電力測定用信号を送信する送信間隔を前記基地局ごとに異なる設定とし、
前記干渉電力測定用信号を送信する前記第１の基地局は、前記送信時間中に前記干渉電力測定用信号を前記基地局ごとに異なる送信間隔で送信する構成である
ことを特徴とする干渉電力測定装置。 The interference power measuring apparatus according to claim 8, wherein
The centralized control station sets a transmission interval for transmitting the interference power measurement signal during the transmission time by the trigger signal to be different for each base station,
The first base station that transmits the interference power measurement signal transmits the interference power measurement signal at different transmission intervals for each base station during the transmission time. measuring device. 請求項８〜請求項１０のいずれかに記載の干渉電力測定装置において、
前記集中制御局は、前記トリガ信号により複数の前記送信アンテナ指向性パタンを切り替える設定とし、前記送信アンテナ指向性パタンごとに干渉電力測定用信号を送信する送信時間および干渉電力を測定する測定時間を設定し、
前記干渉電力測定用信号を送信する前記第１の基地局は、前記送信アンテナ指向性パタンを切り替えながら、送信アンテナ指向性パタンごとの送信時間中に前記干渉電力測定用信号を送信する構成であり、
前記干渉電力測定用信号を受信する前記第２の基地局は、前記送信アンテナ指向性パタンごとの受信時間に前記干渉電力測定用信号を受信して干渉電力を測定し、前記送信アンテナ指向性パタンごとの干渉電力の平均値を前記集中制御局に送信する構成である
ことを特徴とする干渉電力測定装置。 In the interference power measuring device according to any one of claims 8 to 10,
The centralized control station is configured to switch a plurality of transmission antenna directivity patterns according to the trigger signal, and sets a transmission time for transmitting an interference power measurement signal and a measurement time for measuring interference power for each transmission antenna directivity pattern. Set,
The first base station that transmits the interference power measurement signal transmits the interference power measurement signal during a transmission time for each transmission antenna directivity pattern while switching the transmission antenna directivity pattern. ,
The second base station that receives the interference power measurement signal receives the interference power measurement signal at a reception time for each transmission antenna directivity pattern, measures the interference power, and transmits the transmission antenna directivity pattern. An interference power measuring device characterized in that an average value of interference power for each is transmitted to the centralized control station. 請求項８〜請求項１０のいずれかに記載の干渉電力測定装置において、
前記集中制御局は、前記トリガ信号により複数の前記受信アンテナ指向性パタンを切り替える設定とし、受信アンテナ指向性パタンごとに干渉電力測定用信号の干渉電力を測定する測定時間を設定し、
前記干渉電力測定用信号を受信する前記第２の基地局は、前記受信アンテナ指向性パタンを切り替えながら、前記受信アンテナ指向性パタンごとの受信時間中に前記干渉電力測定用信号を受信して干渉電力を測定し、前記受信アンテナ指向性パタンごとの干渉電力の平均値を前記集中制御局に送信する構成である
ことを特徴とする干渉電力測定装置。 In the interference power measuring device according to any one of claims 8 to 10,
The central control station is configured to switch a plurality of the reception antenna directivity patterns by the trigger signal, and sets a measurement time for measuring the interference power of the interference power measurement signal for each reception antenna directivity pattern,
The second base station that receives the interference power measurement signal receives the interference power measurement signal during the reception time for each reception antenna directivity pattern while switching the reception antenna directivity pattern, and performs interference. An interference power measurement apparatus, characterized by measuring power and transmitting an average value of interference power for each reception antenna directivity pattern to the centralized control station.
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