JP3212019B2 - Cdma mobile transmission power control method in a communication system and cdma mobile communication system - Google Patents

Cdma mobile transmission power control method in a communication system and cdma mobile communication system

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Publication number
JP3212019B2
JP3212019B2 JP12435996A JP12435996A JP3212019B2 JP 3212019 B2 JP3212019 B2 JP 3212019B2 JP 12435996 A JP12435996 A JP 12435996A JP 12435996 A JP12435996 A JP 12435996A JP 3212019 B2 JP3212019 B2 JP 3212019B2
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transmission power
power control
base station
control information
station
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JPH09312609A (en
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武宏 中村
悦宏 中野
公士 大野
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株式会社エヌ・ティ・ティ・ドコモ
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Priority to JP12435996A priority Critical patent/JP3212019B2/en
Priority claimed from IN912CA1997 external-priority patent/IN192958B/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/40TPC being performed in particular situations during macro-diversity or soft handoff

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、符号分割多元接続方式(以下、CDMAと略称する)の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時の移動局および各基地局における送信電力を制御するCDMA移動通信システムにおける送信電力制御方法およびCDMA移動通信システムに関する。 The present invention relates to the CDMA system (hereinafter, abbreviated as CDMA) mobile station and each base during soft handover where the mobile station is simultaneously connected to a plurality of base stations in a mobile communication system relating to the transmission power control method and a CDMA mobile communication system in a CDMA mobile communication system for controlling transmission power in the station.

【0002】 [0002]

【従来の技術】CDMA移動通信システムのソフトハンドオーバ時においては、例えば特願平7−77934号に記載されているように、移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信し、これにより加入者容量の増大を図っている。 During soft handover BACKGROUND ART CDMA mobile communication system, for example, as described in Japanese Patent Application No. 7-77934, the mobile station based on the transmission power control information from a plurality of base stations transmit It performs transmission power control so that power becomes smaller, the plurality of reception quality after combining the radio channel determines the transmission power control information for the base station to be equal to the reference quality each base of base station transmitted to the station, the base station performs transmission power control based on transmission power control information from the mobile station determines a transmission power control information transmitted to the mobile station based on the reception quality of the radio channel with the mobile station , thereby working to increase the subscriber capacity.

【0003】送信電力制御情報は基地局毎に独立に決定されるため、移動局において合成する前に受信する必要がある。 [0003] Since the transmission power control information is to be determined independently for each base station needs to receive before the synthesis in a mobile station. 図1(a)の点線で示すように、移動局は基地局1,2からそれぞれ送信される送信電力制御情報1, 1 as indicated by the dotted line in (a), the mobile station transmission power control information 1 to be transmitted from the base stations 1 and 2,
2を受信すると、これらの送信電力制御情報1,2のうち送信電力を小さくするように指示している送信電力制御情報を選択し、これにより送信電力がより小さくなるように送信電力制御を行っている。 When receiving the 2, selects a transmission power control information that instructs to decrease the transmission power of these transmission power control information 1 and 2, thereby performing transmission power control so that the transmission power becomes smaller ing. 例えば、基地局1からの送信電力制御情報が「送信電力制御を下げろ」であり、基地局2からの送信電力制御情報が「送信電力制御を上げろ」であるとすると、移動局は基地局1からの「送信電力制御を下げろ」という送信電力制御情報に従って送信電力を下げ、この下げた送信電力で実線で示すように基地局1,2に送信を行っている。 For example, transmission power control information from the base station 1 is "Sagero transmission power control", the transmission power control information from the base station 2 is "Raise the transmission power control", the mobile station is the base station 1 lowering the transmission power according to the transmission power control information "Sagero transmission power control" from, it is transmitting in the lowered transmission power to the base stations 1 and 2 as shown by the solid line.

【0004】また、図1(b)の実線で示すように、移動局は基地局1,2から信号を受信すると、該信号を合成した後の受信品質、例えば希望波受信レベルに対する干渉波受信レベルの比である受信SIRを測定し、この合成後の受信SIRが基準SIRに等しくなるように基地局1,2用の送信電力制御情報を決定して基地局1, Further, as shown by the solid line of FIG. 1 (b), when the mobile station receives a signal from the base station 2, reception quality after combining the signals, for example interference wave receiving for desired wave reception level the received SIR is the ratio of the level measurement, the base station 1 determines the transmission power control information for the base stations 1 so that the reception SIR after the combining becomes equal to the reference SIR,
2に送信している。 It has been sent to the 2. そして、各基地局1,2は移動局から送信された送信電力制御情報を受信し、該送信電力制御情報に基づいて送信電力制御を行うとともに、また各基地局1,2は移動局からの信号を受信し、該信号の受信SIRに基づいて送信電力制御情報を決定して移動局に送信している。 Each base station 1 receives the transmission power control information transmitted from the mobile station, performs transmission power control based on the transmission power control information, also from the base stations 1 and 2 the mobile station receiving a signal, and transmits to the mobile station determines the transmission power control information based on the reception SIR of the signal.

【0005】 [0005]

【発明が解決しようとする課題】上述したソフトハンドオーバ中の送信電力制御において、移動局は各基地局からの信号を同一品質で受信できるわけでなく、一方の受信品質だけが劣化する可能性があり、この場合には送信電力制御情報の誤り率が大きくなる。 [SUMMARY OF THE INVENTION In the transmission power control during soft handover described above, the mobile station is not necessarily a signal from each base station can be received with the same quality, may only one reception quality deteriorates There, the error rate of the transmission power control information becomes large in this case. 従って、上述したように、送信電力をより小さくなるような制御を行っている場合には、必要以上に送信電力を小さくしてしまい、通信品質が劣化してしまうという問題が移動局からの上り送信電力制御において存在する。 Therefore, as described above, when you have made smaller becomes such controlling transmission power will be reduced transmit power than necessary, a problem that the communication quality deteriorates uplink from the mobile station present in the transmission power control.

【0006】また、ソフトハンドオーバ中の基地局からの下り送信電力制御における問題として以下に説明するような問題がある。 Further, there are problems as described below as a problem in the downlink transmission power control from the base station in soft handover.

【0007】上述したように、移動局は測定した受信S [0007] As described above, the receiving mobile station to measure S
IRを基に送信電力制御情報を決定して各基地局に送信し、各基地局では移動局からの送信電力制御情報に基づいて送信電力を決定している。 Transmitted to the base station determines the transmission power control information based on the IR, and determines the transmission power based on transmission power control information from the mobile station at each base station. ところで、移動局においては送信電力を大きくするような送信電力制御情報は無視し、送信電力をより小さくする送信電力制御情報に従って送信電力制御を行っているので、受信品質が悪い基地局では、移動局の送信電力を増加するように指示しても無視されてしまう。 Meanwhile, transmission power control information to increase the transmission power in the mobile station shall ignore, since performing transmission power control in accordance with the transmission power control information to further reduce the transmission power, the reception quality is poor base station, the mobile You are instructed to increase the transmission power of the station would be ignored. 従って、一方の基地局では、上りの無線回線の受信品質が劣化してしまう可能性があり、 Thus, in one base station, there is a possibility that reception quality of the uplink radio channel is degraded,
移動局の送信した送信電力制御情報を誤って受信したり、受信できなくなることが考えられる。 Or erroneously received the transmitted transmission power control information of the mobile station, it is conceivable that can not be received. このような場合には、基地局の送信電力を制御する術がなくなるという問題がある。 In such a case, there is a problem that the operator is not necessary to control the transmission power of the base station.

【0008】本発明は、上記に鑑みてなされたもので、 [0008] The present invention has been made in view of the above,
その目的とするところは、ソフトハンドオーバ中における送信電力制御を適確に行い得るCDMA移動通信システムにおける送信電力制御方法およびCDMA移動通信システムを提供することにある。 And an object thereof is to provide a transmission power control method and a CDMA mobile communication system in a CDMA mobile communication system capable of performing the accurately transmit power control during soft handover.

【0009】 [0009]

【課題を解決するための手段】上記目的を達成するため、請求項1記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、移動局は各基地局からの送信電力制御情報のう To achieve the above object a solution to a means for, the present invention is claimed in claim 1, during soft handover by the mobile station in the mobile communication system of CDMA system is simultaneously connected to a plurality of base stations the mobile station performs transmission power control so that the transmission power becomes smaller based on the transmission power control information from a plurality of base stations, the reception quality reference quality after combining the radio channel with the plurality of base stations in equal manner to determine the transmission power control information for the base station transmits to each base station, the base station performs transmission power control based on transmission power control information from the mobile station, a radio line to the mobile station in the transmission power control method in a CDMA mobile communication system to be transmitted to the mobile station determines the transmission power control information based on the reception quality of the mobile station transmission power control information from each base station 信頼度の低い送信電力制御情報を無視することを要旨とする。 And gist to ignore low reliability transmission power control information.

【0010】請求項1記載の本発明にあっては、移動局は各基地局からの送信電力制御情報のうち信頼度の低い送信電力制御情報を無視しているため、信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなる。 [0010] In the present invention according to claim 1, since the mobile station which ignores the low transmission power control information reliability of the transmission power control information from each base station, transmission power lower reliability reducing inadvertently the transmission power in accordance with the control information is eliminated.

【0011】また、請求項2記載の本発明は、請求項1 [0011] According to a second aspect of the invention, claim 1
記載の発明において、移動局は各基地局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、該無線回線に対応する基地局からの送信電力制御情報を無視することを要旨とする。 In the invention described, the mobile station measures the reception quality of the radio channel between each base station, when the reception quality of the measured radio channel is less than a predetermined reference value, from a base station corresponding to the wireless line and gist to ignore the transmission power control information.

【0012】請求項2記載の本発明にあっては、移動局は受信品質が所定の基準値以下の無線回線に対応する基地局からの送信電力制御情報を無視しているため、受信品質が低く信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなる。 [0012] In the present invention of claim 2, the mobile station because the reception quality is ignoring transmission power control information from the base station for the following radio channel a predetermined reference value, the reception quality is reducing erroneously transmit power in accordance lower transmission power control information having low reliability is eliminated.

【0013】更に、請求項3記載の本発明は、請求項1 Furthermore, the present invention according to claim 3, claim 1
記載の発明において、移動局は各基地局との無線回線の受信品質を測定し、その測定した無線回線の受信品質の、最大受信品質からの差が所定の基準値以上である無線回線に対応する基地局からの送信電力制御情報を無視することを要旨とする。 In the invention described, the mobile station measures the reception quality of the radio channel between each base station, reception quality of the measured radio channel, corresponding difference in the maximum reception quality to the radio network is equal to or higher than a predetermined reference value and gist to ignore the transmission power control information from the base station.

【0014】請求項3記載の本発明にあっては、移動局は最大受信品質からの差が所定の基準値以上ある受信品質の無線回線に対応する基地局からの送信電力制御情報を無視しているため、信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなり、通信品質の劣化を防止することができるとともに、また最大受信品質からの差に基づくというように相対的レベルによって送信電力制御情報の選択を行っているため、受信品質と送信電力制御情報との関係が例えば移動速度に依存する場合にも精度良く選択することができる。 [0014] In the present invention described in claim 3, the mobile station ignores transmission power control information from the base station the difference from the maximum reception quality corresponding to the radio channel of the reception quality is above a predetermined reference value and for that, it is not possible to reduce the wrong transmit power in accordance with unreliable transmission power control information, relative to that it is possible to prevent deterioration of communication quality, also based on the difference from the maximum reception quality because doing the selection of the transmission power control information by the level, it is possible to accurately select even when the relationship between the reception quality and the transmission power control information is dependent on for example the moving speed.

【0015】請求項4記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、各基地局は移動局からの送信電力制御情報の信頼度が低い場合または送信電力制御情報を受 [0015] According to a fourth aspect of the invention, the transmission power from the mobile station a plurality of base stations during soft handover the mobile station in the mobile communication system of CDMA system is simultaneously connected to a plurality of base stations performs transmission power control so that the transmission power becomes smaller based on the control information, transmission power control information for the base station as the reception quality after combining the radio channel with the plurality of base stations is equal to the reference quality and transmits the determined each base station, the base station performs transmission power control based on transmission power control information from the mobile station, the transmission power control information determined based on reception quality of the radio channel with the mobile station receiving the transmission power control method in a CDMA mobile communication system to be transmitted to the mobile station, where the reliability is low or the transmission power control information of the transmission power control information from each base station the mobile station Te できない場合、各基地局は独立に送信電力を決定することを要旨とする。 If not, each base station summarized as determining the transmission power independently.

【0016】請求項4記載の本発明にあっては、基地局は移動局からの送信電力制御情報の信頼度が低い場合または送信電力制御情報を受信できない場合、各基地局は独立に送信電力を決定しているため、信頼度の低い送信電力制御情報に従って送信電力を上げ過ぎたり下げ過ぎたりすることがなくなる。 [0016] In the present invention according to claim 4, wherein when the base station can not receive the case where the reliability is low or the transmission power control information of the transmission power control information from the mobile station transmission, each base station independently power due to the determined, it is unnecessary to too lower or too high a transmission power in accordance with a lower transmission power control information reliability.

【0017】また、請求項5記載の本発明は、請求項4 [0017] According to a fifth aspect of the invention, claim 4
記載の発明において、各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、同一送信電力での送信を継続することを要旨とする。 In the invention described, each base station measures the reception quality of the radio channel with the mobile station, if the reception quality of the measured radio channel is less than a predetermined reference value, ignoring the transmission power control information from the mobile station and, the gist to continue the transmission at the same transmission power.

【0018】請求項5記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、同一送信電力で送信を継続するため、受信品質が低く信頼度の低い送信電力制御情報に従って送信電力を上げ過ぎたり下げ過ぎたりすることがなくなる。 [0018] In the present invention according to claim 5, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station, the same to continue transmission at transmission power, it is unnecessary to too lower or too high a transmission power in accordance with a lower transmission power control information reliability low reception quality.

【0019】更に、請求項6記載の本発明は、請求項4 Furthermore, the invention described in claim 6, claim 4
記載の発明において、各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信を停止することを要旨とする。 In the invention described, each base station measures the reception quality of the radio channel with the mobile station, if the reception quality of the measured radio channel is less than a predetermined reference value, ignoring the transmission power control information from the mobile station and, the gist to stop the transmission.

【0020】請求項6記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信を停止するため、干渉が低減し、加入者容量を増大することができる。 [0020] In the present invention described in claim 6, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station, transmission the order to stop the interference is reduced, thereby increasing the subscriber capacity.

【0021】請求項7記載の本発明は、請求項4記載の発明において、各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値減少することを要旨とする。 The invention set forth in claim 7, wherein in the invention in claim 4, each base station measures the reception quality of the radio channel with the mobile station, reception quality is a predetermined reference value of the measured radio channel If it is less, ignoring transmission power control information from the mobile station, the transmission power summarized as reducing the predetermined value.

【0022】請求項7記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値低減しているため、干渉が低減し、加入者容量を増大することができる。 [0022] In the present invention according to claim 7, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station, transmission since the power is reduced a predetermined value, the interference is reduced, thereby increasing the subscriber capacity.

【0023】請求項8記載の本発明は、請求項4記載の発明において、各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値増加することを要旨とする。 The invention according to claim 8, wherein in the invention in claim 4, each base station measures the reception quality of the radio channel with the mobile station, reception quality is a predetermined reference value of the measured radio channel If it is less, ignoring transmission power control information from the mobile station, and summarized in that the transmission power is increased by a predetermined value.

【0024】請求項8記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値増加しているため、下り通信回線の品質を向上することができる。 [0024] In the present invention according to claim 8, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station, transmission due to the increased predetermined value of power, it is possible to improve the quality of the downlink communication channel.

【0025】また、請求項9記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、移動 Further, the invention of claim 9, the mobile station in the mobile communication system of the CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of wired transmission paths mobile station during soft handover is connected to the synthesis station via performs transmission power control so that the transmission power becomes smaller based on the transmission power control information from a plurality of base stations, and a plurality of base stations and of transmitting a radio channel synthesis reception quality after the determined transmission power control information for the base station to be equal to the reference quality to each base station, the base station based on transmission power control information from the mobile station in Te performs transmission power control, transmission power control method in a CDMA mobile communication system to be transmitted to the mobile station determines the transmission power control information based on the reception quality of the radio channel with the mobile station, the mobile は各基地局のとまり木チャネルの受信品質を測定し、その測定結果を制御信号として各基地局を介して合成局に送信し、合成局は前記測定結果であるとまり木チャネルの各受信品質を比較し、該受信品質の、最大受信品質からの差が所定の基準値以上である基地局の送信を停止させるように制御することを要旨とする。 Measures the reception quality of the perch channel of each base station, and sends the synthesized station via each base station of the measurement result as a control signal, combining station compares each reception quality of the perch channel which is the measurement result , and summarized in that the said reception quality, the difference from the maximum reception quality controls to stop transmission of the base station is above a predetermined reference value.

【0026】請求項9記載の本発明にあっては、合成局は移動局から送信された各基地局のとまり木チャネルの受信品質の測定結果を比較し、最大受信品質からの差が所定の基準値以上である基地局の送信を停止するため、 [0026] In the present invention according to claim 9, synthesized station compares the measurement result of the reception quality of the perch channel of each base station transmitted from the mobile station, the difference is a predetermined reference from the maximum reception quality to stop transmission of the base station is greater than or equal to the value,
干渉が低減し、加入者容量を増大する。 Interference is reduced, to increase the subscriber capacity.

【0027】更に、請求項10記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、移 Furthermore, the present invention is claimed in claim 10, the mobile station in the mobile communication system of the CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of wired transmission paths mobile station during soft handover is connected to the synthesis station via performs transmission power control so that the transmission power becomes smaller based on the transmission power control information from a plurality of base stations, and a plurality of base stations and of transmitting a radio channel synthesis reception quality after the determined transmission power control information for the base station to be equal to the reference quality to each base station, the base station based on transmission power control information from the mobile station performs transmission power control Te, the transmission power control method in a CDMA mobile communication system for transmitting the determined by the mobile station the transmission power control information based on the reception quality of the radio channel with the mobile station, transfer 局は各基地局のとまり木チャネルの受信品質を測定し、この測定結果を制御信号として各基地局を介して合成局に送信し、合成局は前記測定結果であるとまり木チャネルの各受信品質の最大のものに基づいて各基地局の送信電力制御情報を決定し、各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された前記送信電力制御情報に従って送信電力制御を行うことを要旨とする。 Maximum station measures the reception quality of the perch channel of each base station, and transmits the measurement result to combining station via the respective base stations as a control signal, synthesis station of the reception quality of the perch channel which is the measurement result the transmission power control information of each base station determined on the basis of those, the notifies each base station, each base station is low reliability of the transmission power control information from the mobile station, which is notified from the synthesized station and gist to carry out transmission power control in accordance with the transmission power control information.

【0028】請求項10記載の本発明にあっては、合成局は各基地局のとまり木チャネルの受信品質の最大のものに基づいて各基地局の送信電力制御情報を決定して各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された送信電力制御情報に従って送信電力制御を行うため、移動局からの送信電力制御情報を受信できない基地局においても、合成局で合成された送信電力制御情報に基づいて送信電力制御が可能となり、精度の高い送信電力制御が可能となる。 [0028] In the present invention according to claim 10, synthesis station and each base station determines the transmission power control information of each base station based on received ones maximum quality of the perch channel of each base station notified, if each base station has a low reliability of the transmission power control information from the mobile station, for transmission power control in accordance with the transmission power control information reported from the synthesis station, receives the transmission power control information from the mobile station even can not base station, it is possible to transmit power control based on transmission power control information synthesized in synthesis station, thereby enabling a high transmission power control accuracy.

【0029】請求項11記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、移動局は The invention of claim 11, wherein the mobile station in the mobile communication system of the CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of through a wired transmission path radio with the mobile station performs transmission power control so that the transmission power becomes smaller based on the transmission power control information from a plurality of base stations, a plurality of base stations during soft handover is connected to the synthesis station Te and transmits the determined transmission power control information for the base station as the reception quality is equal to the reference quality after combining the lines to each base station, the base station is transmitted based on the transmission power control information from the mobile station perform power control, the transmission power control method in a CDMA mobile communication system for transmitting the determined by the mobile station the transmission power control information based on the reception quality of the radio channel with the mobile station, the mobile station 基地局のとまり木チャネルの受信品質を測定し、この測定結果を制御信号として各基地局を介して合成局に送信し、合成局は前記測定結果であるとまり木チャネルの各受信品質の比率に応じて各基地局の送信電力制御情報を決定し、各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された前記送信電力制御情報に従って送信電力制御を行うことを要旨とする。 The reception quality of the perch channel of the base station is measured, and sends the measurement result to combining station via the respective base stations as a control signal, combining station according to the ratio of the reception quality of the perch channel which is the measurement result determines the transmission power control information of each base station, it notifies each base station, if each base station has a low reliability of the transmission power control information from the mobile station, according to the transmission power control information reported from the synthesized station and gist to carry out transmission power control.

【0030】請求項11記載の本発明にあっては、合成局は各基地局のとまり木チャネルの各受信品質の比率に応じて各基地局の送信電力制御情報を決定して各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された送信電力制御情報に従って送信電力制御を行うため、移動局からの送信電力制御情報を受信できない基地局においても、合成局で合成された送信電力制御情報に基づいて送信電力制御が可能となり、精度の高い送信電力制御が可能となる。 [0030] In the present invention according to claim 11, the synthesis station notifies each base station determines the transmission power control information of each base station in accordance with the ratio of the reception quality of the perch channel of each base station and, when each base station has a low reliability of the transmission power control information from the mobile station, for transmission power control in accordance with the transmission power control information reported from the synthesis station can not receive the transmission power control information from the mobile station also in the base station, it is possible to transmit power control based on transmission power control information synthesized in synthesis station, thereby enabling a high transmission power control accuracy.

【0031】また、請求項12記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、各基地局からの送信電力制御情報の信頼度を測定する信頼度測定手段と、この測定した信頼度の低い送信電力 Further, the invention of claim 12, the mobile station during soft handover the mobile station in the mobile communication system of CDMA system is simultaneously connected to a plurality of base stations each of a plurality of base stations It performs transmission power control so that the transmission power becomes smaller based on the transmission power control information, transmission power of the base station so that the reception quality after combining the radio channel is equal to the reference quality of the plurality of base stations to determine the control information transmitted to each base station, the base station performs transmission power control based on transmission power control information from the mobile station, the transmission power control information based on the reception quality of the radio channel with the mobile station in CDMA mobile communication system determines and transmits to the mobile station, a confidence measurement means for measuring the reliability of the transmission power control information from each base station, transmission power lower reliability that this measure 御情報を無視するように制御する制御手段とを有することを要旨とする。 And summarized in that a control means for controlling to ignore the control information.

【0032】請求項12記載の本発明にあっては、移動局は各基地局からの送信電力制御情報のうち信頼度の低い送信電力制御情報を無視しているため、信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなる。 [0032] In the present invention of claim 12, since the mobile station which ignores the low transmission power control information reliability of the transmission power control information from each base station, transmission power lower reliability reducing inadvertently the transmission power in accordance with the control information is eliminated.

【0033】更に、請求項13記載の本発明は、請求項12記載の発明において、前記信頼度測定手段は、各基地局との無線回線の受信品質を測定する受信品質測定手段を有し、前記制御手段は、前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、該無線回線に対応する基地局からの送信電力制御情報を無視するように制御する手段を有することを要旨とする。 Furthermore, the present invention is recited in claim 13, in the invention of claim 12, wherein said reliability measurement unit comprises a reception quality measuring section that measures reception quality of a radio channel between each base station, wherein if the reception quality of the radio channel measured by the reception quality measuring means is below a predetermined reference value, means for controlling to ignore the transmission power control information from the base station corresponding to the wireless line and summarized in that with.

【0034】請求項13記載の本発明にあっては、受信品質が所定の基準値以下の無線回線に対応する基地局からの送信電力制御情報を無視しているため、信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなる。 [0034] In the present invention of claim 13, since the reception quality is ignoring transmission power control information from the base station for the following radio channel a predetermined reference value, transmission power lower reliability reducing inadvertently the transmission power in accordance with the control information is eliminated.

【0035】請求項14記載の本発明は、請求項12記載の発明において、前記信頼度測定手段が各基地局との無線回線の受信品質を測定する受信品質測定手段を有し、前記制御手段が前記受信品質測定手段で測定した無線回線の受信品質の、最大受信品質からの差が所定の基準値以上である無線回線に対応する基地局からの送信電力制御情報を無視するように制御する手段を有することを要旨とする。 The invention of claim 14 is the invention according to claim 12, having a reception quality measuring means for the confidence measurement means for measuring a reception quality of a radio channel between each base station, the control means controls but to ignore the transmission power control information from the base station of the reception quality of the radio channel measured by the reception quality measuring means, a difference from the maximum reception quality corresponding to the radio network is equal to or higher than a predetermined reference value and summarized in that having means.

【0036】請求項14記載の本発明にあっては、最大受信品質からの差が所定の基準値以上ある受信品質の無線回線に対応する基地局からの送信電力制御情報を無視しているので、信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなり、通信品質の劣化を防止することができるとともに、また最大受信品質からの差に基づくというように相対的レベルによって送信電力制御情報の選択を行っているため、受信品質と送信電力制御情報との関係が例えば移動速度に依存する場合にも精度良く選択することができる。 [0036] In the present invention according to claim 14, the difference from the maximum reception quality is ignoring transmission power control information from the base station corresponding to the radio channel of the reception quality is above a predetermined reference value , prevents lowering erroneously transmit power in accordance with unreliable transmission power control information transmitted, it is possible to prevent deterioration of communication quality, also the relative level so that based on the difference from the maximum reception quality because doing the selection of the power control information, it is possible to accurately select even when the relationship between the reception quality and the transmission power control information is dependent on for example the moving speed.

【0037】また、請求項15記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、移動局からの送信電力制御情報の信頼度を測定する信頼度測定手段と、この測定した信頼度が低い場合または Further, the invention of claim 15, the mobile station during soft handover the mobile station in the mobile communication system of CDMA system is simultaneously connected to a plurality of base stations each of a plurality of base stations It performs transmission power control so that the transmission power becomes smaller based on the transmission power control information, transmission power of the base station so that the reception quality after combining the radio channel is equal to the reference quality of the plurality of base stations to determine the control information transmitted to each base station, the base station performs transmission power control based on transmission power control information from the mobile station, the transmission power control information based on the reception quality of the radio channel with the mobile station in CDMA mobile communication system determines and transmits to the mobile station, a confidence measurement means for measuring the reliability of the transmission power control information from the mobile station, if the measured unreliable or 信電力制御情報を受信できない場合、送信電力を独立に決定する送信電力制御手段とを有することを要旨とする。 If you can not receive the transmission power control information, and summarized in that and a transmission power control means for determining the transmission power independently.

【0038】請求項15記載の本発明にあっては、基地局は移動局からの送信電力制御情報の信頼度が低い場合または送信電力制御情報を受信できない場合、各基地局は独立に送信電力を決定しているため、信頼度の低い送信電力制御情報に従って送信電力を上げ過ぎたり下げ過ぎたりすることがなくなる。 [0038] In the present invention according to claim 15, wherein when the base station can not receive the case where the reliability is low or the transmission power control information of the transmission power control information from the mobile station transmission, each base station independently power due to the determined, it is unnecessary to too lower or too high a transmission power in accordance with a lower transmission power control information reliability.

【0039】更に、請求項16記載の本発明は、請求項15記載の発明において、前記信頼度測定手段が移動局との無線回線の受信品質を測定する受信品質測定手段を有し、前記送信電力制御手段が前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、同一送信電力での送信を継続する手段を有することを要旨とする。 [0039] Further, the present invention is claimed in claim 16, in the invention of claim 15, having a reception quality measuring means for the confidence measurement means for measuring a reception quality of a radio channel with the mobile station, the transmission If the reception quality of a radio channel by the power control unit measured by the reception quality measuring means is below a predetermined reference value, ignoring the transmission power control information from the mobile station, a means to continue the transmission at the same transmission power and summarized in that a.

【0040】請求項16記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、 [0040] In the present invention according to claim 16, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station,
同一送信電力で送信を継続するため、受信品質が低く信頼度の低い送信電力制御情報に従って送信電力を上げ過ぎたり下げ過ぎたりすることがなくなる。 To continue transmission with the same transmission power, there is no possible or too lower or too high a transmission power in accordance with a lower transmission power control information reliability low reception quality.

【0041】請求項17記載の本発明は、請求項15記載の発明において、前記信頼度測定手段が移動局との無線回線の受信品質を測定する受信品質測定手段を有し、 The present invention of claim 17 is the invention according to claim 15, having a reception quality measuring means for the confidence measurement means for measuring a reception quality of a radio channel with the mobile station,
前記送信電力制御手段が前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、 If the reception quality of a radio line wherein the transmission power control unit measured by the reception quality measuring means is below a predetermined reference value,
移動局からの送信電力制御情報を無視し、送信を停止する手段を有することを要旨とする。 Ignoring transmission power control information from the mobile station, and summarized in that a means for stopping the transmission.

【0042】請求項17記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、 [0042] In the present invention according to claim 17, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station,
送信を停止するため、干渉が低減し、加入者容量を増大することができる。 To stop the transmission, interference is reduced, thereby increasing the subscriber capacity.

【0043】また、請求項18記載の本発明は、請求項15記載の発明において、前記信頼度測定手段が移動局との無線回線の受信品質を測定する受信品質測定手段を有し、前記送信電力制御手段が前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値減少する手段を有することを要旨とする。 [0043] Further, the present invention is claimed in claim 18, in the invention of claim 15, having a reception quality measuring means for the confidence measurement means for measuring a reception quality of a radio channel with the mobile station, the transmission If the reception quality of a radio channel by the power control unit measured by the reception quality measuring means is below a predetermined reference value, ignoring the transmission power control information from the mobile station, the transmission power comprises means for decreasing the predetermined value the the gist.

【0044】請求項18記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、 [0044] In the present invention according to claim 18, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station,
送信電力を所定値低減しているため、干渉が低減し、加入者容量を増大することができる。 Since the transmission power is reduced a predetermined value, the interference is reduced, thereby increasing the subscriber capacity.

【0045】請求項19記載の本発明は、請求項15記載の発明において、前記信頼度測定手段は、移動局との無線回線の受信品質を測定する受信品質測定手段を有し、前記送信電力制御情報手段は、前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値増加する手段を有することを要旨とする。 The invention of claim 19 is the invention of claim 15, wherein said reliability measurement unit comprises a reception quality measuring section that measures reception quality of a radio channel with the mobile station, the transmission power control information unit, when the reception quality of the radio channel measured by the reception quality measuring means is below a predetermined reference value, ignoring the transmission power control information from the mobile station comprises means for increasing a predetermined value the transmission power it is the gist of.

【0046】請求項19記載の本発明にあっては、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、 [0046] In the present invention according to claim 19, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station,
送信電力を所定値増加しているため、下り通信回線の品質を向上することができる。 Since the transmission power is increased by a predetermined value, it is possible to improve the quality of the downlink communication channel.

【0047】更に、請求項20記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、移動局装置は、各基地局のと [0047] Further, the present invention is recited in claim 20, the mobile station in the mobile communication system of the CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of wired transmission paths mobile station during soft handover is connected to the synthesis station via performs transmission power control so that the transmission power becomes smaller based on the transmission power control information from a plurality of base stations, and a plurality of base stations and of transmitting a radio channel synthesis reception quality after the determined transmission power control information for the base station to be equal to the reference quality to each base station, the base station based on transmission power control information from the mobile station performs transmission power control Te, in a CDMA mobile communication system to be transmitted to the mobile station determines the transmission power control information based on the reception quality of the radio channel with the mobile station, the mobile station apparatus, bets of each base station り木チャネルの受信品質を測定する測定手段と、該測定手段で測定した結果を制御信号として各基地局を介して合成局に送信する送信手段とを有し、合成局装置は、前記送信手段から送信された前記測定結果であるとまり木チャネルの各受信品質を比較し、 Ri and measuring means for measuring a reception quality of the wood channels, and a transmitting means for transmitting the synthesized station via each base station the results of measurement by said measuring means as a control signal, synthesizing station apparatus, the transmitting means comparing each reception quality of the perch channel which is the measurement result transmitted from,
該受信品質の、最大受信品質からの差が所定の基準値以上である基地局の送信を停止させるように制御する制御手段を有することを要旨とする。 Of the reception quality, the difference between the maximum reception quality is summarized in that with a control means for controlling to stop the transmission of the base station is above a predetermined reference value.

【0048】請求項20記載の本発明にあっては、合成局は移動局から送信された各基地局のとまり木チャネルの受信品質の測定結果を比較し、最大受信品質からの差が所定の基準値以上である基地局の送信を停止するため、干渉が低減し、加入者容量を増大する。 [0048] In the present invention according to claim 20, synthesized station compares the measurement result of the reception quality of the perch channel of each base station transmitted from the mobile station, the difference is a predetermined reference from the maximum reception quality to stop transmission of the base station is greater than or equal, interference is reduced, increasing the subscriber capacity.

【0049】請求項21記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、移動局装置は、各基地局のとまり木 [0049] The present invention of claim 21, wherein the mobile station in the mobile communication system of the CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of through a wired transmission path radio with the mobile station performs transmission power control so that the transmission power becomes smaller based on the transmission power control information from a plurality of base stations, a plurality of base stations during soft handover is connected to the synthesis station Te and transmits the determined transmission power control information for the base station as the reception quality is equal to the reference quality after combining the lines to each base station, the base station is transmitted based on the transmission power control information from the mobile station perform power control in a CDMA mobile communication system to be transmitted to the mobile station determines the transmission power control information based on the reception quality of the radio channel with the mobile station, the mobile station apparatus, perch of each base station ャネルの受信品質を測定する測定手段と、該測定手段で測定した結果を制御信号として各基地局を介して合成局に送信する送信手段とを有し、合成局装置は、前記送信手段から送信された測定結果であるとまり木チャネルの各受信品質の最大のものに基づいて各基地局の送信電力制御情報を決定し、各基地局に通知する手段を有し、基地局装置は、移動局からの送信電力制御情報の信頼度が低い場合、前記合成局装置から通知された前記送信電力制御情報に従って送信電力制御を行う制御手段を有することを要旨とする。 A measuring means for measuring a reception quality of Yaneru, and transmission means for transmitting the synthesized station via each base station the results of measurement by said measuring means as the control signal, the combining station, transmitted from the transmission unit are measurement results in which, based on that of the perch channel maximum of the reception quality to determine the transmission power control information of each base station comprises means for notifying each base station, the base station apparatus, the mobile station for low reliability of the transmission power control information, and summarized in that a control means for controlling the transmission power according to said transmission power control information reported from the synthesis station.

【0050】請求項21記載の本発明にあっては、合成局は各基地局のとまり木チャネルの受信品質の最大のものに基づいて各基地局の送信電力制御情報を決定して各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された送信電力制御情報に従って送信電力制御を行うため、移動局からの送信電力制御情報を受信できない基地局においても、合成局で合成された送信電力制御情報に基づいて送信電力制御が可能となり、精度の高い送信電力制御が可能となる。 [0050] In the present invention according to claim 21, synthesis station and each base station determines the transmission power control information of each base station based on received ones maximum quality of the perch channel of each base station notified, if each base station has a low reliability of the transmission power control information from the mobile station, for transmission power control in accordance with the transmission power control information reported from the synthesis station, receives the transmission power control information from the mobile station even can not base station, it is possible to transmit power control based on transmission power control information synthesized in synthesis station, thereby enabling a high transmission power control accuracy.

【0051】また、請求項22記載の本発明は、符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、移 [0051] Further, the present invention is claimed in claim 22, the mobile station in the mobile communication system of the CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of wired transmission paths mobile station during soft handover is connected to the synthesis station via performs transmission power control so that the transmission power becomes smaller based on the transmission power control information from a plurality of base stations, and a plurality of base stations and of transmitting a radio channel synthesis reception quality after the determined transmission power control information for the base station to be equal to the reference quality to each base station, the base station based on transmission power control information from the mobile station performs transmission power control Te, the transmission power control method in a CDMA mobile communication system for transmitting the determined by the mobile station the transmission power control information based on the reception quality of the radio channel with the mobile station, transfer 局装置は、各基地局のとまり木チャネルの受信品質を測定する測定手段と、該測定手段で測定した結果を制御信号として各基地局を介して合成局に送信する送信手段とを有し、合成局装置は、前記送信手段から送信された前記測定結果であるとまり木チャネルの各受信品質の比率に応じて各基地局の送信電力制御情報を決定し、各基地局に通知する手段を有し、基地局装置は、移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された前記送信電力制御情報に従って送信電力制御を行う制御手段を有することを要旨とする。 Station apparatus includes a measuring section that measures reception quality of the perch channel of each base station, and transmitting means for transmitting the synthesized station via each base station the results of measurement by said measuring means as a control signal, synthesis station device comprises means for the transmission power control information of each base station determined in accordance with the ratio of the reception quality of the perch channel which is the measurement result transmitted, and notifies each base station from the transmitting unit, the base station apparatus, when the low reliability of the transmission power control information from the mobile station, and summarized in that a control means for controlling the transmission power according to said transmission power control information reported from the synthesis station.

【0052】請求項22記載の本発明にあっては、合成局は各基地局のとまり木チャネルの各受信品質の比率に応じて各基地局の送信電力制御情報を決定して各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された送信電力制御情報に従って送信電力制御を行うため、移動局からの送信電力制御情報を受信できない基地局においても、合成局で合成された送信電力制御情報に基づいて送信電力制御が可能となり、精度の高い送信電力制御が可能となる。 [0052] In the present invention of claim 22 wherein the synthetic station notifies each base station determines the transmission power control information of each base station in accordance with the ratio of the reception quality of the perch channel of each base station and, when each base station has a low reliability of the transmission power control information from the mobile station, for transmission power control in accordance with the transmission power control information reported from the synthesis station can not receive the transmission power control information from the mobile station also in the base station, it is possible to transmit power control based on transmission power control information synthesized in synthesis station, thereby enabling a high transmission power control accuracy.

【0053】 [0053]

【発明の実施の形態】以下、図面を用いて本発明の実施の形態について説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention are described with reference to the drawings.

【0054】図2および図3は、それぞれ本発明の一実施形態に係わるCDMA移動通信システムにおける送信電力制御方法を実施する移動局および基地局の構成を示すブロック図である。 [0054] Figures 2 and 3 is a block diagram showing a configuration of a mobile station and a base station for implementing transmission power control method in a CDMA mobile communication system according to an embodiment of the present invention, respectively.

【0055】図2に示す移動局は、基地局からの信号を受信するアンテナ11を有し、該アンテナ11で受信した基地局からの信号を送受分離部13を介して受信無線部15に供給し、受信無線部15から逆拡散部17,1 [0055] The mobile station shown in Figure 2 has an antenna 11 for receiving signals from the base station, supplies signals from the received base station via the transmission and reception separating portion 13 to the receive radio section 15 with the antenna 11 and despreading the reception radio section 15 section 17,1
9に供給される。 It is supplied to the 9. 逆拡散部17,19は、該移動局が図1に示すように2つの基地局1,2に同時に接続されているソフトハンドオーバ状態において基地局1,2からの信号をそれぞれ供給され、ここでそれぞれの拡散コードを用いて各信号を逆拡散するものである。 Despreading section 17 and 19, the mobile station is respectively supplied with signals from the base stations 1 and 2 in a soft handover state of being simultaneously connected to two base stations 1 and 2 as shown in FIG. 1, where it is to despread the signals using the respective spreading codes. この逆拡散された信号はそれぞれ復調部37,39で復調され、送信電力制御ビット抽出部43に供給されるようになっている。 The despread signal is demodulated at each demodulator 37 and 39, it is supplied to the transmission power control bit extractor 43.

【0056】また、逆拡散部17,19は、それぞれ希望波受信電力検出部21、干渉波受信電力検出部23および希望波受信電力検出部25、干渉波受信電力検出部27を有し、ここで基地局1,2からのそれぞれの希望波受信電力および干渉波受信電力が検出される。 [0056] Further, the despreading section 17 and 19, respectively desired wave received power detecting section 21, the interference wave received power detector 23 and the desired wave received power detecting section 25 has an interference wave received power detector 27, here in each of the desired wave received power and the interference wave received power from the base stations 1 and 2 is detected. そして、逆拡散部17の希望波受信電力検出部21および干渉波受信電力検出部23で検出された希望波受信電力および干渉波受信電力はSIR算出部33に供給され、ここで希望波受信電力に対する干渉波受信電力の比である受信SIRが算出される。 Then, desired wave received power and the interference wave received power detected by the desired wave received power detecting section 21 and the interference wave received power detecting section 23 of the despreading section 17 is supplied to the SIR calculation unit 33, wherein the desired wave received power received SIR is the ratio of the interference wave received power for is calculated. また、逆拡散部19の希望波受信電力検出部25および干渉波受信電力検出部27で検出された希望波受信電力および干渉波受信電力はSI Further, desired wave received power and the interference wave received power detected by the desired wave received power detector 25 and the interference wave received power detecting section 27 of the despreading unit 19 SI
R算出部35に供給され、ここで希望波受信電力と干渉波受信電力との比である受信SIRが算出される。 Is supplied to the R computing section 35, the reception SIR is calculated here is the ratio of the desired wave received power and the interference wave received power.

【0057】SIR算出部33,35でそれぞれ検出された受信SIRは送信電力制御ビット選択部45に供給される。 [0057] reception SIR detected respectively SIR calculation unit 33 and 35 is supplied to the transmission power control bit selection unit 45.

【0058】更に、逆拡散部17,19の希望波受信電力検出部21,25および干渉波受信電力検出部23, [0058] Further, the despreader 17, 19 desired wave received power detecting section 21, 25 and the interference wave received power detecting section 23,
27でそれぞれ検出された各希望波受信電力および干渉波受信電力は最大比合成部31に供給され、ここで最大比合成され、この合成された受信SIRは送信電力制御ビット決定部41に供給される。 Each desired wave received power and the interference wave received power detected respectively at 27 is supplied to the maximum ratio combining unit 31, where it is maximum ratio combining, the combined received SIR is supplied to the transmission power control bit determination section 41 that. 送信電力制御ビット決定部41は、最大比合成部31からの合成後の受信SI Transmission power control bit determination section 41 receives SI after synthesis from the maximum ratio combining unit 31
Rに基づいて送信電力制御情報である送信電力制御ビットを決定し、信号発生部49に供給する。 The transmission power control bit is the transmission power control information determined based on the R, supplied to the signal generator 49.

【0059】信号発生部49は、送信電力制御ビット決定部41からの送信電力制御ビットを含む送信信号を構成して変調部51に供給する。 [0059] The signal generating section 49 supplies the modulation section 51 constitutes a transmission signal containing the transmission power control bits from the transmission power control bit determination section 41. 該送信信号は変調部51 The transmission signal modulation unit 51
で変調され、拡散部52で拡散されて、送信無線部53 In modulated, it is diffused by the diffusion unit 52, a transmission radio unit 53
に供給される。 It is supplied to.

【0060】送信電力制御ビット抽出部43は、それぞれ復調部37,39からの復調信号に含まれる基地局1,2からの送信電力制御情報である送信電力制御ビットを抽出し、送信電力制御ビット選択部45に供給する。 [0060] The transmission power control bit extractor 43, respectively extracts the transmission power control bit is the transmission power control information from the base stations 1 and 2 contained in the demodulated signal from the demodulator 37 and 39, the transmission power control bits It is supplied to the selection unit 45. 送信電力制御ビット選択部45は、送信電力制御ビット抽出部43からの送信電力制御ビットをSIR算出部33,35からの受信SIRに基づいて選択し、この選択した送信電力制御ビットを送信電力制御部47に供給する。 Transmission power control bit selection unit 45, a transmission power control bit from the transmission power control bit extractor 43 selects, based on the reception SIR from the SIR calculation unit 33 and 35, transmit power control the selected transmission power control bit supplied to the part 47.

【0061】送信電力制御部47は、この送信電力制御ビットに基づいて送信無線部53からの送信電力を制御する。 [0061] The transmission power controller 47 controls the transmission power of the transmission radio unit 53 on the basis of the transmission power control bit. 送信無線部53は送信電力制御部47によって制御された送信電力で送信信号を出力し、該送信信号を送受分離部13を介してアンテナ11から各基地局に向けて送信する。 Transmission radio section 53 outputs the transmission signal at the transmission power controlled by the transmission power control unit 47, the transmission signal via the transmission and reception separator unit 13 transmits from the antenna 11 to each base station.

【0062】図3に示す基地局は、移動局からの信号を受信するアンテナ61を有し、該アンテナ61で受信した信号は送受分離部63を介して共通受信アンプ65で増幅した後、複数のチャネルユニット69a〜69nに供給される。 [0062] The base station shown in FIG. 3 includes an antenna 61 for receiving signals from the mobile station, after a signal received by the antenna 61 through the transmission and reception separator 63 and amplified by a common reception amplifier 65, a plurality It is supplied to the channel unit 69A~69n.

【0063】各チャネルユニット69a〜69nでは、 [0063] In each channel unit 69a~69n,
共通受信アンプ65から供給される移動局からの受信信号を受信無線部71を介して逆拡散部73に供給し、ここで拡散コードを用いて逆拡散する。 Supplying a received signal from the mobile station to be supplied from a common reception amplifier 65 to the receive radio section 71 despreading section 73 via the despread using here spreading code. この逆拡散された信号は復調部79で復調され、送信電力制御ビット抽出部81に供給される。 The despread signal is demodulated by the demodulator 79, it is supplied to the transmission power control bit extractor 81. 送信電力制御ビット抽出部81は復調部79からの復調信号に含まれる移動局からの送信電力制御情報である送信電力制御ビットを抽出し、送信電力制御部83に供給する。 Transmission power control bit extractor 81 extracts the transmission power control bit is the transmission power control information from the mobile station included in the demodulated signal from the demodulator 79, and supplies the transmission power control unit 83.

【0064】また、逆拡散部73は、希望波受信電力検出部75および干渉波受信電力検出部77を有し、ここで移動局からの希望波受信電力および干渉波受信電力が検出され、SIR算出部85に供給される。 [0064] Further, the despreading portion 73 has a desired wave received power detector 75 and the interference wave received power detecting section 77, the desired wave received power and the interference wave reception power from the mobile station is detected here, SIR It is supplied to the calculation unit 85. SIR算出部85は希望波受信電力検出部75および干渉波受信電力検出部77からの希望波受信電力および干渉波受信電力に基づいて両者の比である受信SIRを算出し、送信電力制御ビット決定部87および送信電力制御部83に供給する。 SIR calculation unit 85 calculates the received SIR is the ratio of the two on the basis of the desired wave received power and the interference wave received power from the desired wave received power detector 75 and the interference wave received power detecting section 77, the transmission power control bit decision parts 87 and supplied to the transmission power control unit 83.

【0065】送信電力制御ビット決定部87は、SIR [0065] transmission power control bit determination unit 87, SIR
算出部85からの受信SIRに基づいて送信電力制御ビットを決定し、信号発生部89に供給する。 The transmission power control bits determined based on the reception SIR from the calculation unit 85, and supplies the signal generator 89. 信号発生部89は、送信電力制御ビット決定部87からの送信電力制御ビットを含む送信信号を構成して変調部91に供給する。 Signal generating unit 89 supplies the modulation section 91 constitutes a transmission signal containing the transmission power control bits from the transmission power control bit determination section 87. この送信信号は変調部91で変調され、拡散部9 The transmission signal is modulated by the modulation unit 91, spreading section 9
3で拡散され、送信無線部95に供給される。 Is spread by 3, it is supplied to the transmission radio section 95.

【0066】送信電力制御部83は、送信電力制御ビット抽出部81からの送信電力制御ビットおよびSIR算出部85からの受信SIRに基づいて送信無線部95からの送信電力を制御する。 [0066] The transmission power controller 83 controls the transmission power of the transmission radio unit 95 based on the reception SIR from the transmission power control bits and SIR calculating section 85 from the transmission power control bit extractor 81. 送信無線部95は送信電力制御部83で制御される送信電力で送信信号を出力し、該送信信号を共通送信アンプ67および送受分離部63を介してアンテナ61から移動局に送信する。 Transmission radio section 95 outputs a transmission signal with the transmission power controlled by the transmission power control unit 83, to the mobile station from the antenna 61 via the common transmission amplifier 67 and transmission and reception separator unit 63 the transmission signal.

【0067】次に、以上のように構成される移動局および基地局を有するCDMA移動通信システムの作用について説明する。 Next, the operation of the CDMA mobile communication system having a configured mobile station and a base station as described above will be described.

【0068】CDMA移動通信システムにおいて、図1 [0068] In CDMA mobile communication system, Figure 1
に示すように、移動局が複数の(本例では、2つの)基地局1,2に同時に接続されているソフトハンドオーバ時では、上述したように、移動局は各基地局1,2からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、各基地局1,2との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局1,2に送信し、各基地局1,2は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信し、これにより加入者容量の増大を図っているが、このようなソフトハンドオーバ時の処理において本実施形態では、図2に示す移動局に設けられているSIR算出部 As shown in (in this example, two) mobile station a plurality of the soft handover which the base station 1 and 2 are connected at the same time, as described above, the mobile station from each base station 2 It performs transmission power control so that the transmission power becomes smaller based on the transmission power control information, base station so that the reception quality after combining the radio channel between each base station 1, 2 is equal to the reference quality transmits the determined power control information transmitted to the base stations 1 and 2, each base station 2 performs transmission power control based on transmission power control information from the mobile station, the radio channel with the mobile station and determines the transmission power control information transmitted to the mobile station based on the reception quality, but thereby working to increase the subscriber capacity, in the present embodiment in the processing at the time of such a soft handover, shown in FIG. 2 SIR calculation unit provided in the mobile station 3,35で各基地局1,2からの受信SIRを算出し、この算出した受信SIRを送信電力制御ビット選択部45に供給し、これにより送信電力制御ビット選択部45は送信電力制御ビット抽出部43から供給される各基地局1,2からの送信電力制御ビットを前記受信SIRに基づき、該受信SIRが所定の基準値以下である場合には該受信SIRに対応する送信電力制御ビットを選択しないように制御している。 Calculates a reception SIR from the base stations 1 and 2 at 3,35, and supplies the received SIR which is the calculated transmission power control bit selection unit 45, thereby the transmission power control bit selection unit 45 is the transmission power control bit extractor based transmission power control bits from the base stations 1 and 2 supplied from the parts 43 to the reception SIR, when the received SIR is less than the predetermined reference value the transmission power control bit corresponding to the received SIR It is controlled so as not to be selected.

【0069】具体的に説明すると、例えば受信SIRの所定の基準値を3dBとすると、SIR算出部35,3 [0069] Specifically, for example, the 3dB a predetermined reference value of the reception SIR, SIR calculation section 35, 3
7で算出した受信SIRが3dB以下である場合には、 If the received SIR calculated at 7 is 3dB or less,
この受信SIRに対応する送信電力制御ビットを選択しない。 Do not select the transmission power control bit corresponding to the reception SIR. そして、残った方の送信電力制御ビットが送信電力制御部47に供給され、これにより送信電力制御を行っている。 The remaining person transmission power control bits are supplied to the transmission power controller 47, thereby performing transmission power control.

【0070】また、すべての受信SIRが3dB以下である場合には、送信電力制御ビットはすべて選択されないことになるが、この場合には送信電力制御を行わず、 [0070] Further, if all the reception SIR is 3dB or less, but will not be selected every transmission power control bit does not perform the transmission power control in this case,
現在の送信電力を維持するようにしている。 So as to maintain the current transmission power. このように制御することにより、信頼度の低い送信電力制御ビットに従い、送信電力を誤って下げることがなくなり、通信品質の劣化を防止することができる。 By such control, in accordance with low reliability transmission power control bit, it is not possible to reduce accidental transmission power, it is possible to prevent deterioration of communication quality.

【0071】また、他の実施形態の送信電力制御方法においては、移動局は、SIR算出部33,35で各基地局1,2からの受信SIRを算出し、この算出した受信SIRを送信電力制御ビット選択部45に供給し、送信電力制御ビット選択部45は該受信SIRについて最大受信SIRからの差が所定の基準値以上である場合には該受信SIRに対応する基地局からの送信電力制御情報を無視して選択しないように制御している。 [0071] In the transmission power control method according to another embodiment, the mobile station calculates a received SIR from the base stations 1 and 2 by the SIR calculation section 33 and 35, transmits the reception SIR that this calculated power is supplied to the control bit selection unit 45, the transmission power control bit selection unit 45 transmit power from the base station corresponding to the receiving SIR is when the difference between the maximum received SIR for the received SIR is equal to or greater than a predetermined reference value to ignore the control information is controlled so as not to be selected.

【0072】具体的に説明すると、例えば、受信SIR [0072] Specifically, for example, reception SIR
の最大受信SIRからの差の基準値を5dBとすると、 When the reference value of the difference from the maximum reception SIR of a 5 dB,
最大受信SIRが8dBの場合には、受信SIRが3d If the maximum reception SIR is 8dB, the reception SIR is 3d
B以下の送信電力制御ビットは選択しないようにしている。 Following the transmission power control bit B is not select.

【0073】このように選択制御することにより、信頼度の低い送信電力制御ビットに従い、送信電力を誤って下げることがなくなるため、通信品質の劣化を防止することができる。 [0073] By selecting such control, in accordance with low reliability transmission power control bit, because there is no lowering accidental transmission power, it is possible to prevent deterioration of communication quality. また、受信SIRの差で選択の有無を制御しているため、すなわち最大受信SIRからの差に基づくというように相対的レベルによって送信電力制御情報の選択を行っているため、受信SIRと送信電力制御情報との関係が例えば移動速度に依存する場合にも精度良く選択することができる。 Further, since the control the presence or absence of the selected difference reception SIR, namely because it makes a selection of the transmission power control information by the relative level so that based on the difference from the maximum received SIR, and reception SIR transmit power it can be accurately selected even when the relationship between the control information depends for example on the moving speed.

【0074】更に他の実施形態の送信電力制御方法として、ソフトハンドオーバ中の基地局が下り送信電力制御を行う場合において、基地局は図3に示すSIR算出部85で移動局からの無線回線の受信SIRを算出し、この算出した受信SIRを送信電力制御部83に供給する。 [0074] As further transmission power control method of the other embodiment, when the base station in soft handover performs downlink transmission power control, the base station of the radio channel from the mobile station by the SIR calculation section 85 shown in FIG. 3 It calculates a reception SIR, and supplies the received SIR which is the calculated transmission power control unit 83. 送信電力制御部83は、該受信SIRを所定の基準値以下と比較し、該受信SIRが所定の基準値以下である場合には、移動局からの送信電力制御ビットを無視し、同一送信電力での送信を継続するように送信無線部95を制御する。 Transmission power control section 83, the reception SIR as compared with less than a predetermined reference value, if the received SIR is less than the predetermined reference value, ignoring the transmission power control bit from the mobile station, the same transmission power controlling the transmission radio unit 95 to continue the transmission on.

【0075】例えば、前記所定の基準値を3dBとすると、SIR算出部85で算出した移動局からの受信SI [0075] For example, when the 3dB the predetermined reference value, the reception SI from the mobile station calculated by the SIR calculation section 85
Rが3dB以下の場合には、送信電力制御部83は移動局からの送信電力制御ビットを無視し、同一送信電力を継続するように制御する。 When R is 3dB or less, the transmission power control unit 83 ignores the transmission power control bit from the mobile station is controlled so as to continue the same transmission power. このように送信電力制御することにより、誤った送信電力制御ビットに従って送信電力を上げ過ぎたり、下げ過ぎたりすることがなくなる。 By this way, transmission power control, or too high a transmission power in accordance with erroneous transmission power control bit, it is unnecessary to excessively lowered.
また、受信SIRが基準値を上回った場合には、送信電力制御を再開するが、この時の送信電力は送信電力制御ビットの無視を開始したときの送信電力と同一にすることができる。 Further, if the reception SIR is higher than the reference value, resumes the transmission power control, transmission power at this time may be the same as the transmission power at the start ignoring transmission power control bits.

【0076】また更に他の実施形態の送信電力制御方法として、ソフトハンドオーバ中の基地局が下り送信電力制御を行う場合において、基地局はSIR算出部85で移動局からの無線回線の受信SIRを算出し、この算出した受信SIRを送信電力制御部83に供給する。 [0076] As the transmission power control method of a still further embodiment, in a case where the base station in soft handover performs downlink transmission power control, the reception SIR of the radio channel from the base station the mobile station by the SIR calculation section 85 calculated, and supplies the received SIR which is the calculated transmission power control unit 83. 送信電力制御部83は、該受信SIRを所定の基準値以下と比較し、該受信SIRが所定の基準値以下である場合には、移動局からの送信電力制御ビットを無視し、送信を停止するように制御する。 Transmission power control section 83, the reception SIR as compared with less than a predetermined reference value, if the received SIR is less than the predetermined reference value, ignoring the transmission power control bit from the mobile station, stops transmission It is controlled to be.

【0077】例えば、前記所定の基準値を3dBとすると、SIR算出部85で算出した移動局からの受信SI [0077] For example, when the 3dB the predetermined reference value, the reception SI from the mobile station calculated by the SIR calculation section 85
Rが3dB以下の場合には、送信電力制御部83は移動局からの送信電力制御ビットを無視し、送信を停止する。 When R is 3dB or less, the transmission power control unit 83 ignores the transmission power control bit from the mobile station stops transmission.

【0078】一般に上りと下りの伝搬損失には相関があるため、受信SIRの小さい基地局から送信するよりも、受信SIRの大きい基地局から送信を行った方が送信電力を小さくすることができる。 [0078] Since the propagation loss of the generally upward and downward there is a correlation, than sending from a small base station reception SIR, who has transmitted a large base station of the received SIR can be reduced transmit power . 従って、上述したように、受信SIRの小さい基地局からの送信を停止することにより、干渉が低減し、加入者容量を増大することができる。 Therefore, as described above, by stopping the transmission from the small base station reception SIR, interference is reduced, thereby increasing the subscriber capacity.

【0079】また更に他の実施形態の送信電力制御方法として、ソフトハンドオーバ中の基地局が下り送信電力制御を行う場合において、基地局はSIR算出部85で移動局からの無線回線の受信SIRを算出し、この算出した受信SIRを送信電力制御部83に供給する。 [0079] As the transmission power control method of a still further embodiment, in a case where the base station in soft handover performs downlink transmission power control, the reception SIR of the radio channel from the base station the mobile station by the SIR calculation section 85 calculated, and supplies the received SIR which is the calculated transmission power control unit 83. 送信電力制御部83は、該受信SIRを所定の基準値以下と比較し、該受信SIRが所定の基準値以下である場合には、移動局からの送信電力制御ビットを無視し、送信電力を所定値減少するように送信電力制御する。 Transmission power control section 83, the reception SIR as compared with less than a predetermined reference value, if the received SIR is less than the predetermined reference value, ignoring the transmission power control bit from the mobile station, the transmission power transmitting power control to decrease the predetermined value.

【0080】例えば、前記所定の基準値を3dBとすると、SIR算出部85で算出した移動局からの受信SI [0080] For example, when the 3dB the predetermined reference value, the reception SI from the mobile station calculated by the SIR calculation section 85
Rが3dB以下の場合には、送信電力制御部83は移動局からの送信電力制御ビットを無視し、送信電力を例えば1dB減少させるように送信電力制御する。 When R is 3dB or less, the transmission power control unit 83 ignores the transmission power control bit from the mobile station transmits power control so that the transmission power for example is 1dB reduced.

【0081】このように受信SIRの小さい基地局からの送信電力を減少させることにより、干渉が低減し、加入者容量を増大することができる。 [0081] By reducing the transmission power from a small base station reception SIR Thus, interference is reduced, thereby increasing the subscriber capacity. また、完全に送信を停止しないため、上りと下りの伝搬損失が不一致の場合や、両基地局間の受信SIR値が頻繁に逆転する場合にも安定した送信電力制御を維持することができる。 Further, since no completely stopped transmission can propagation loss of upstream and downstream is maintained and if a mismatch, the stable transmission power control when the reception SIR value between the two base stations is reversed frequently.

【0082】他の実施形態の送信電力制御方法として、 [0082] As transmission power control method according to another embodiment,
ソフトハンドオーバ中の基地局が下り送信電力制御を行う場合において、基地局はSIR算出部85で移動局からの無線回線の受信SIRを算出し、この算出した受信SIRを送信電力制御部83に供給する。 In the case where the base station in soft handover performs downlink transmission power control, the base station calculates a received SIR of the radio channel from the mobile station by the SIR calculation section 85, supplies the received SIR which is the calculated transmission power control unit 83 to. 送信電力制御部83は、該受信SIRを所定の基準値以下と比較し、 Transmission power control unit 83 compares the received SIR equal to or less than a predetermined reference value,
該受信SIRが所定の基準値以下である場合には、移動局からの送信電力制御ビットを無視し、送信電力を所定値増加するように送信電力制御する。 If the received SIR is less than the predetermined reference value, ignoring the transmission power control bit from the mobile station transmits power control as the transmit power is increased by a predetermined value.

【0083】例えば、前記所定の基準値を3dBとすると、SIR算出部85で算出した移動局からの受信SI [0083] For example, when the 3dB the predetermined reference value, the reception SI from the mobile station calculated by the SIR calculation section 85
Rが3dB以下の場合には、送信電力制御部83は移動局からの送信電力制御ビットを無視し、送信電力を例えば1dB増加させるように送信電力制御する。 When R is 3dB or less, the transmission power control unit 83 ignores the transmission power control bit from the mobile station transmits power control so that the transmission power for example is 1dB increase.

【0084】このように受信SIRの小さい基地局からの送信電力を増加することにより、下り通信回線の品質が向上する。 [0084] By increasing the transmission power from the small base station reception SIR Thus, improved quality of the downlink communication line. 従って、基地局から移動局に対して送信する送信電力制御情報の信頼度が向上し、精度の高い移動局送信電力制御を行うことができる。 Thus, improved reliability of the transmission power control information to be transmitted to the mobile station from the base station, it is possible to perform highly mobile station transmission power control accuracy.

【0085】また、本発明の別の実施形態の送信電力制御方法として、ソフトハンドオーバ中の基地局からの下り送信電力制御を合成局を介して行う場合について図4 [0085] As another embodiment the transmission power control method of the present invention, the case of performing the downlink transmission power control from the base station in soft handover via a synthetic station 4
を参照して説明する。 With reference to the description.

【0086】図4は、CDMA移動通信システムにおいてソフトハンドオーバ中にある移動局3、2つの基地局1,2、合成局5、および制御信号終端ノード7を示す図である。 [0086] Figure 4 is a diagram showing a mobile station 3, two base stations 1 and 2 is in a soft handover in a CDMA mobile communication system, combining station 5, and a control signal termination node 7. 同図において、移動局3は基地局1からの下り無線回線12および基地局2からの下り無線回線14 In the figure, the downlink radio channel from the mobile station 3 is downlink radio channel 12 and the base station 2 from the base station 1 14
を受信するとともに、基地局1,2に対して共通の上り無線回線16を送信している。 Which receives the, sending a common uplink radio channel 16 to the base stations 1 and 2. また、基地局1は有線回線22を介して合成局5に接続され、基地局2は有線回線24を介して合成局5に接続され、合成局5は制御信号終端ノード7に接続されている。 Further, the base station 1 is connected to the synthesis station 5 via the wire line 22, the base station 2 is connected to the synthesis station 5 via a wired line 24, synthetic station 5 is connected to the control signal terminal node 7 .

【0087】このように接続されるソフトハンドオーバ中の移動通信システムにおいて、基地局1,2から移動局3への複数の信号は移動局3において合成され、移動局3から基地局1,2への信号は更に基地局1,2から合成局5へ送信され、基地局1,2から合成局5への複数の信号は合成局5において合成される。 [0087] In the mobile communication system during soft handover, which is thus connected, a plurality of signals to the mobile station 3 by the base stations 1 and 2 are combined in the mobile station 3, from the mobile station 3 to the base stations 1 and 2 the signals are further transmitted from the base station 1 to the synthesis station 5, a plurality of signals from the base stations 1 and 2 to the synthesis station 5 are synthesized in the synthesis station 5. また、移動局3が送信した制御信号は基地局1,2を介して合成局5 The control signal which the mobile station 3 transmits the synthesized station 5 via the base stations 1 and 2
に伝送されて合成され、合成局5から制御信号終端ノード7に送信される。 Are transmitted are combined to be transmitted from the synthesis station 5 to the control signal terminal node 7. なお、送信電力制御ビットは移動局3と基地局1,2間で送受信される。 The transmission power control bit is transmitted and received between the mobile station 3 and the base stations 1 and 2.

【0088】ところで、移動局は基地局からの受信SI [0088] By the way, received SI from the mobile station the base station
Rを基に送信電力制御情報を決定して各基地局に送信し、各基地局では移動局からの送信電力制御情報に基づいて送信電力を決定するとともに、また移動局は送信電力を大きくするような送信電力制御情報を無視し、送信電力をより小さくする送信電力制御情報に従って送信電力制御を行っているので、受信品質が悪い基地局では、 And determines the transmission power control information based on the R and sends it to each base station, and determines the transmission power based on transmission power control information from the mobile station at each base station, also the mobile station increases the transmission power ignoring transmission power control information as, since performing transmission power control in accordance with the transmission power control information the transmission power smaller, the reception quality is poor base station,
移動局の送信電力を増加するように指示しても無視されてしまうため、一方の基地局では、上りの無線回線の受信品質が劣化してしまう可能性があり、移動局の送信した送信電力制御情報を誤って受信したり、受信できなくなることが考えられ、このような場合には基地局において送信電力を制御する術がなくなるという問題が上述したようにある。 Since thus ignored be instructed to increase the transmission power of the mobile station, the one base station, there is a possibility that reception quality of the uplink radio channel is degraded, the transmission power that has transmitted the mobile station or erroneously received control information, it is considered no longer be received, a problem that the operator is not necessary to control the transmission power at the base station in this case is as described above.

【0089】このような問題を解決するために、本実施形態においては、移動局3は、各基地局1,2のとまり木チャネルの受信SIRを測定し、この測定したとまり木チャネル受信SIRを制御信号として基地局1,2および合成局5を介して制御信号終端ノード7に送信する。 [0089] In order to solve such a problem, in the present embodiment, the mobile station 3, the reception SIR of the perch channel of each base station 1 measures the control signal the perch channel receiving SIR that this measure and it transmits the control signal termination node 7 via the base stations 1, 2 and synthetic station 5 as. 制御信号終端ノード7は、各基地局1,2のとまり木チャネル受信SIRを比較して、各基地局1,2からの送信電力を決定し、各基地局1,2に通知する。 Control signal terminal node 7 compares the perch channel receiving SIR of each base station 1 determines the transmission power from the base stations 1 and 2, and notifies each base station 1. 各基地局1,2は、この送信電力に従って送信電力制御を行う。 Each base station 2 performs transmission power control in accordance with the transmission power. なお、この場合において、各基地局1,2のとまり木チャネル受信SIRの比較および該比較に基づく送信電力の決定処理を制御信号終端ノード7で行う代わりに、合成局5で行ってもよく、また制御信号終端ノード7は合成局5の一部と考えてもよい。 Incidentally, in this case, instead of performing the process of determining the transmission power based on the comparison and the comparison of the perch channel receiving SIR of each base station 1 by the control signal terminal node 7 may be carried out in the synthesis station 5, also control signal terminal node 7 may be considered as part of the synthesis station 5.

【0090】本実施形態について更に詳しく説明すると、移動局3は各基地局1,2のとまり木チャネルの受信SIRを測定すると、この測定したとまり木チャネル受信SIRを制御信号として基地局および合成局5を介して制御信号終端ノード7に送信する。 [0090] In more detail about the present embodiment, when the mobile station 3 measures the reception SIR of the perch channel of each base station 1, the base station and synthetic station 5 the perch channel receiving SIR that the measurement as the control signal and it transmits the control signal termination node 7 through. 制御信号終端ノード7は、該制御信号である各基地局1,2のとまり木チャネル受信SIRを受信すると、この両基地局1,2 Control signal terminal node 7 receives the perch channel receiving SIR of each base station 1, 2 is a control signal, the two base stations 1 and 2
の受信SIRを比較し、最大受信SIRからの差が所定の基準値以上である受信SIRに対応する基地局の送信を停止させる。 Compares the reception SIR, the difference from the maximum reception SIR stops the transmission of the base station corresponding to the received SIR is equal to or greater than a predetermined reference value. また、その他の基地局では、上述したように移動局と基地局との間の送信電力制御ビットに基づいて通常の送信電力制御を行う。 Further, the other base station performs normal transmission power control based on transmission power control bits between the mobile station and the base station as described above.

【0091】具体的に説明すると、受信SIR差の基準値を5dBとすると、最大受信SIRが8dBである場合、受信SIRが3dB以下の基地局に対しては送信を停止させるように合成局5を介して該基地局に指示する。 [0091] Specifically, when 5dB the reference value of the reception SIR difference, when the maximum reception SIR is 8 dB, synthetic station to stop the transmission reception SIR is against 3dB below the base station 5 to instruct the base station via a.

【0092】上述したように、とまり木チャネル受信S [0092] As described above, the perch channel reception S
IRの小さい基地局からの送信を停止することにより、 By stopping the transmission from IR small base station,
干渉が低減し、加入者容量を増大することができるとともに、またとまり木チャネルの受信品質により送信停止の判定を行うため、下り伝搬損失に応じた正確な判定が可能となる。 Interference is reduced, it is possible to increase the subscriber capacity, also because it is determined stop transmitting the reception quality of the perch channel, it is possible to accurately determine in accordance with the downlink propagation loss.

【0093】また、ソフトハンドオーバ中の基地局からの下り送信電力制御を合成局を介して行う場合の更に別の実施形態として、図4において、移動局3は、各基地局1,2のとまり木チャネル受信SIRを測定し、この測定したとまり木チャネル受信SIRを制御信号として基地局および合成局5を介して制御信号終端ノード7に送信する。 [0093] Further, as still another embodiment for performing the downlink transmission power control from the base station in soft handover via a synthetic station, in FIG. 4, the mobile station 3, perch of each base station 1, 2 the channel receiving SIR measured, transmits the perch channel receiving SIR that this measurement to the control signal terminal node 7 via a base station and synthetic station 5 as a control signal. 制御信号終端ノード7は、とまり木チャネル受信SIRの高い方の値を基に各基地局1,2の送信電力を決定し、各基地局1,2に通知する。 Control signal terminal node 7 determines the transmission power of each base station 1 based on the value of the higher perch channel receiving SIR, it notifies each base station 1. そして、各基地局1,2では、受信している移動局3からの送信電力制御ビットの信頼度の低い基地局において、制御信号終端ノード7からの送信電力で送信電力制御を行う。 Then, in each base station 1, the lower base station reliability of the transmission power control bit from the mobile station 3 has received, it performs transmission power control by the transmission power from the control signal terminal node 7. その他の基地局では、上述したように移動局と基地局との間の送信電力制御ビットに基づいて通常の送信電力制御を行う。 The other base station performs normal transmission power control based on transmission power control bits between the mobile station and the base station as described above.

【0094】更に具体的に説明すると、例えば基地局1 [0094] More specifically, for example, base station 1
のとまり木チャネル受信SIRの測定結果が10dBであり、基地局2のとまり木チャネル受信SIRの測定結果が15dBであり、通信チャネルの所要受信SIRが5dBである場合には、送信電力をとまり木チャネルの送信電力から10dB低い値として、各基地局1,2に通知する。 The perch channel receiving SIR measurement result of a 10 dB, perch channel receiving SIR measurement result of the base station 2 is 15 dB, when the required received SIR of a communication channel is 5dB, the transmission of the transmission power of the perch channel as 10dB lower value from the power, and notifies each base station 1. 例えば、受信SIRが0dBで、送信電力制御ビットの信頼度が低い基地局では、この通知結果に従って送信電力を制御する。 For example, the receiving SIR is 0 dB, the low reliability base station of the transmission power control bits, controls the transmission power according to the notification result.

【0095】このように送信電力制御を行うことにより、送信電力制御ビットを受信できない基地局においても、合成された制御信号を基に送信電力制御が可能となるため、精度の高い送信電力制御が可能となる。 [0095] By performing such transmission power control, even in the base station can not receive the transmission power control bit, because the transmission power control based on the combined control signal becomes possible, high transmission power control precision It can become.

【0096】更に、ソフトハンドオーバ中の基地局からの下り送信電力制御を合成局を介して行う場合のまた更に別の実施形態として、図4において、移動局3は、各基地局1,2のとまり木チャネル受信SIRを測定し、 [0096] Further, as still yet another embodiment for performing the downlink transmission power control from the base station in soft handover via a synthetic station, in FIG. 4, the mobile station 3 of the base stations 1 and 2 perch measures the channel reception SIR,
この測定したとまり木チャネル受信SIRを制御信号として基地局および合成局5を介して制御信号終端ノード7に送信する。 It transmits this measured perch channel receiving SIR of the control signal termination node 7 via a base station and synthetic station 5 as a control signal. 制御信号終端ノード7では、とまり木チャネル受信SIR比に応じて送信電力制御を決定し、各基地局1,2に通知する。 The control signal termination node 7, the transmission power control decided in accordance with the perch channel receiving SIR ratio, notifies each base station 1. 各基地局1,2では、受信している送信電力制御ビットの信頼度が低い基地局において、制御信号終端ノード7から指定された送信電力で送信電力制御を行う。 Each base station 1, the reliability is low base station of the transmission power control bit is received, performs transmission power control by the transmission power specified by the control signal terminal node 7. その他の基地局では、上述したように移動局と基地局との間の送信電力制御ビットに基づいて通常の送信電力制御を行う。 The other base station performs normal transmission power control based on transmission power control bits between the mobile station and the base station as described above.

【0097】具体的に説明すると、例えば基地局1のとまり木チャネル受信SIRの測定結果が10dBであり、基地局2のとまり木チャネル受信SIRの測定結果が15dBであり、通信チャネルの所要受信SIRが5 [0097] Specifically, for example perch channel receiving SIR measurement result of the base station 1 is 10 dB, perch channel receiving SIR measurement result of the base station 2 is 15 dB, the required reception SIR of the communication channel 5
dBである場合には、基地局1の送信電力をとまり木チャネルから15dB低い値とし、基地局2の送信電力をとまり木チャネルから10dB低い値として、各基地局1,2に通知する。 If it is dB is the transmission power of the base station 1 and 15dB lower value from the perch channel, the transmission power of the base station 2 as 10dB lower value from the perch channel, and notifies each base station 1. 例えば、受信SIRが0dBで、送信電力制御ビットの信頼度が低い基地局では、この通知結果に従い送信電力を制御する。 For example, the receiving SIR is 0 dB, the low reliability base station of the transmission power control bits, to control the transmission power in accordance with the notification result.

【0098】このように送信電力制御を行うことにより、移動局3からの送信電力制御ビットを受信できない基地局においても、合成された送信電力制御情報に基づいて送信電力制御が可能となり、精度の高い送信電力制御が可能となるとともに、またとまり木チャネルの受信SIRの小さい基地局では送信電力を更に下げるため、 [0098] By performing such transmission power control, even in the base station can not receive the transmission power control bit from the mobile station 3, it is possible to transmit power control based on the combined transmission power control information, the accuracy of it becomes possible to high transmit power control, also to further reduce the transmission power by a small base station reception SIR of the perch channel,
干渉が低減し、加入者容量を増大することができる。 Interference is reduced, thereby increasing the subscriber capacity.

【0099】 [0099]

【発明の効果】以上説明したように、本発明によれば、 As described in the foregoing, according to the present invention,
移動局は各基地局からの送信電力制御情報のうち信頼度の低い送信電力制御情報を無視しているので、信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなり、通信品質の劣化を防止することができる。 Since the mobile station ignores the low transmission power control information reliability of the transmission power control information from each base station, it is not possible to reduce the wrong transmit power in accordance with unreliable transmission power control information, the communication it is possible to prevent the deterioration of quality.

【0100】また、本発明によれば、移動局は受信品質が所定の基準値以下の無線回線に対応する基地局からの送信電力制御情報を無視しているので、受信品質が低く信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなり、通信品質の劣化を防止することができる。 Furthermore, according to the present invention, the mobile station because the reception quality is ignoring transmission power control information from the base station for the following radio channel a predetermined reference value, the reliability low reception quality it is not possible to reduce the wrong transmit power in accordance low transmit power control information, it is possible to prevent deterioration of communication quality.

【0101】更に、本発明によれば、移動局は最大受信品質からの差が所定の基準値以上ある受信品質の無線回線に対応する基地局からの送信電力制御情報を無視しているので、信頼度の低い送信電力制御情報に従って送信電力を誤って低下させることがなくなり、通信品質の劣化を防止することができるとともに、また最大受信品質からの差に基づくというように相対的レベルによって送信電力制御情報の選択を行っているため、受信品質と送信電力制御情報との関係が例えば移動速度に依存する場合にも精度良く選択することができる。 [0102] Further, according to the present invention, since the mobile station ignores the transmission power control information from the base station the difference from the maximum reception quality corresponding to the radio channel of the reception quality is above a predetermined reference value, it is not possible to reduce the wrong transmit power in accordance with unreliable transmission power control information, transmission it is possible to prevent deterioration of communication quality, also the relative level so that based on the difference from the maximum received quality power because doing the selection of the control information, it is possible to accurately select even when the relationship between the reception quality and the transmission power control information is dependent on for example the moving speed.

【0102】本発明によれば、基地局は移動局からの送信電力制御情報の信頼度が低い場合または送信電力制御情報を受信できない場合、各基地局は独立に送信電力を決定しているので、信頼度の低い送信電力制御情報に従って送信電力を上げ過ぎたり下げ過ぎたりすることがなく、通信品質の劣化を防止することができる。 According to [0102] the present invention, when the base station can not receive the case where the reliability is low or the transmission power control information of the transmission power control information from the mobile station, each base station determines the transmission power independently It may be too lowered or too high a transmission power in accordance with unreliable transmission power control information without preventing deterioration of communication quality.

【0103】また、本発明によれば、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、 [0103] Further, according to the present invention, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value,
移動局からの送信電力制御情報を無視し、同一送信電力で送信を継続するので、受信品質が低く信頼度の低い送信電力制御情報に従って送信電力を上げ過ぎたり下げ過ぎたりすることがなく、通信品質の劣化を防止することができる。 Ignoring transmission power control information from the mobile station, so it continues to transmit at the same transmission power, without or too lower or too high a transmission power in accordance with a lower transmission power control information reliability low reception quality, communication it is possible to prevent the deterioration of quality.

【0104】更に、本発明によれば、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、 [0104] Further, according to the present invention, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value,
移動局からの送信電力制御情報を無視し、送信を停止するので、干渉が低減し、加入者容量を増大することができる。 Ignoring transmission power control information from the mobile station, since stops transmission, interference is reduced, thereby increasing the subscriber capacity.

【0105】本発明によれば、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値低減しているので、干渉が低減し、加入者容量を増大することができるとともに、また完全に送信を停止しないため、上りと下りの伝搬損失が不一致の場合や、両基地局間の受信品質が頻繁に逆転する場合にも安定した送信電力制御を維持することができる。 According to [0105] the present invention, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station, the transmission power is reduced a predetermined value since it is, interference is reduced, because it is possible to increase the subscriber capacity, and does not stop completely transmitted, and when the propagation loss of the uplink and downlink do not match, the reception quality between the two base stations frequently it is possible to maintain a stable transmission power control even when reversed.

【0106】本発明によれば、基地局は移動局との無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値増加しているため、下り通信回線の品質を向上することができ、従って基地局から移動局に対して送信する送信電力制御情報の信頼度が向上し、精度の高い移動局送信電力制御を行うことができる。 According to [0106] the present invention, the base station when the reception quality of the radio channel with the mobile station is less than a predetermined reference value, ignoring the transmission power control information from the mobile station, a transmission power increase to a predetermined value and for that, it is possible to improve the quality of the downlink communication channel, thus improving the reliability of the transmission power control information to be transmitted to the mobile station from the base station, be performed with high accuracy mobile station transmission power control it can.

【0107】また、本発明によれば、合成局は移動局から送信された各基地局のとまり木チャネルの受信品質の測定結果を比較し、最大受信品質からの差が所定の基準値以上である基地局の送信を停止するので、干渉が低減し、加入者容量を増大することができるとともに、またとまり木チャネルの受信品質により送信停止の判定を行うため、下り伝搬損失に応じた正確な判定が可能となる。 [0107] Further, according to the present invention, the synthetic station compares the measurement result of the reception quality of the perch channel of each base station transmitted from the mobile station, the difference from the maximum reception quality is equal to or greater than a predetermined reference value since stopping the transmission of the base station, interference is reduced, it is possible to increase the subscriber capacity, also because it is determined stop transmitting the reception quality of the perch channel, an accurate determination in accordance with the downlink propagation loss It can become.

【0108】更に、本発明によれば、合成局は各基地局のとまり木チャネルの受信品質の最大のものに基づいて各基地局の送信電力制御情報を決定して各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された送信電力制御情報に従って送信電力制御を行うので、移動局からの送信電力制御情報を受信できない基地局においても、合成局で合成された送信電力制御情報に基づいて送信電力制御が可能となり、精度の高い送信電力制御が可能となる。 [0108] Further, according to the present invention, synthesized station notifies each base station determines the transmission power control information of each base station based on received ones maximum quality of the perch channel of each base station, each If the base station has a low reliability of the transmission power control information from the mobile station, since the transmission power control in accordance with the transmission power control information reported from the synthesis station, the base station can not receive the transmission power control information from the mobile station also, it is possible to transmit power control based on transmission power control information synthesized in synthesis station, thereby enabling a high transmission power control accuracy.

【0109】本発明によれば、合成局は各基地局のとまり木チャネルの各受信品質の比率に応じて各基地局の送信電力制御情報を決定して各基地局に通知し、各基地局は移動局からの送信電力制御情報の信頼度が低い場合、 According to [0109] the present invention, synthesized station notifies each base station determines the transmission power control information of each base station in accordance with the ratio of the reception quality of the perch channel of each base station, each base station If the reliability of the transmission power control information from the mobile station is low,
合成局から通知された送信電力制御情報に従って送信電力制御を行うので、移動局からの送信電力制御情報を受信できない基地局においても、合成局で合成された送信電力制御情報に基づいて送信電力制御が可能となり、精度の高い送信電力制御が可能となるとともに、またとまり木チャネルの受信品質の小さい基地局では送信電力を更に下げるため、干渉が低減し、加入者容量を増大することができる。 Because transmission power control is performed in accordance with the transmission power control information reported from the synthesis station, in the base station can not receive the transmission power control information from the mobile station, transmission power control based on transmission power control information synthesized in Synthesis station becomes possible, it becomes possible to high transmission power control precision, also to further reduce the transmission power by a small base station reception quality of the perch channel, interference is reduced, thereby increasing the subscriber capacity.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】CDMA移動通信システムのソフトハンドオーバ時における基地局および移動局を示す図である。 1 is a diagram showing a base station and a mobile station during soft handover in a CDMA mobile communication system.

【図2】本発明の一実施形態に係わるCDMA移動通信システムにおける送信電力制御方法を実施する移動局の構成を示すブロック図である。 2 is a block diagram showing a configuration of a mobile station carrying out transmit power control method in a CDMA mobile communication system according to an embodiment of the present invention.

【図3】本発明の一実施形態に係わるCDMA移動通信システムにおける送信電力制御方法を実施する基地局の構成を示すブロック図である。 3 is a block diagram showing a configuration of a base station for implementing transmission power control method in a CDMA mobile communication system according to an embodiment of the present invention.

【図4】本発明の別の実施形態に係わるCDMA移動通信システムにおける送信電力制御方法を実施する移動局、基地局、合成局および制御信号終端ノードの接続関係を示す図である。 [4] The mobile station to carry out transmission power control method in a CDMA mobile communication system according to another embodiment of the present invention, a base station is a diagram showing the connection relationship of the synthetic station and control signal termination node.

【符号の説明】 DESCRIPTION OF SYMBOLS

1,2 基地局 3 移動局 5 合成局 7 制御信号終端ノード 33 移動局のSIR算出部 41 移動局の送信電力制御ビット決定部 43 移動局の送信電力制御ビット抽出部 45 移動局の送信電力制御ビット選択部 47 移動局の送信電力制御部 81 基地局の送信電力制御ビット抽出部 83 基地局の送信電力制御部 85 基地局のSIR算出部 87 基地局の送信電力制御ビット決定部 1,2 transmission power control of the base station 3 the mobile station 5 Synthesis station 7 control signal terminal node 33 of the transmission power control bit decision unit 43 mobile station of the SIR calculation unit 41 of the mobile stations transmission power control bit extractor 45 mobile station transmission power control bit decision unit of the SIR calculation unit 87 base station of the transmission power control unit 85 base station of the transmission power control bit extractor 83 base station of the transmission power control unit 81 base station of the bit selector 47 mobile station

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−218932(JP,A) 特開 平4−92518(JP,A) 特開 平7−298333(JP,A) 特表 平7−502631(JP,A) 特表 平9−507115(JP,A) (58)調査した分野(Int.Cl. 7 ,DB名) H04B 7/24 - 7/26 102 H04Q 7/00 - 7/38 ────────────────────────────────────────────────── ─── of the front page continued (56) reference Patent Sho 60-218932 (JP, a) JP flat 4-92518 (JP, a) JP flat 7-298333 (JP, a) JP-T flat 7- 502631 (JP, a) JP-T flat 9-507115 (JP, a) (58 ) investigated the field (Int.Cl. 7, DB name) H04B 7/24 - 7/26 102 H04Q 7/00 - 7/38

Claims (22)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、 移動局は各基地局からの送信電力制御情報のうち信頼度の低い送信電力制御情報を無視することを特徴とするC 1. A transmission based on the mobile station the transmit power control information from a plurality of base stations during soft handover where the mobile station is simultaneously connected to a plurality of base stations in a mobile communication system of CDMA system power There performs transmission power control to be smaller, each of the plurality of base stations to decide the transmission power control information for the base station as the reception quality after combining the radio channel is equal to the reference quality of the base station transmitted to, the base station performs transmission power control based on transmission power control information from the mobile station, to the mobile station determines the transmission power control information based on the reception quality of the radio channel with the mobile station CDMA in the transmission power control method in a mobile communication system, the mobile station is characterized by ignoring the low transmission power control information reliability of the transmission power control information from each base station C
    DMA移動通信システムにおける送信電力制御方法。 Transmission power control method in DMA mobile communication system.
  2. 【請求項2】 移動局は各基地局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、該無線回線に対応する基地局からの送信電力制御情報を無視することを特徴とする請求項1記載のCDMA移動通信システムにおける送信電力制御方法。 Wherein the mobile station measures the reception quality of the radio channel between each base station, when the reception quality of the measured radio channel is less than a predetermined reference value, from a base station corresponding to the wireless line transmission power control method in a CDMA mobile communication system according to claim 1, wherein ignoring the transmission power control information.
  3. 【請求項3】 移動局は各基地局との無線回線の受信品質を測定し、その測定した無線回線の受信品質の、最大受信品質からの差が所定の基準値以上である無線回線に対応する基地局からの送信電力制御情報を無視することを特徴とする請求項1記載のCDMA移動通信システムにおける送信電力制御方法。 3. A mobile station measures the reception quality of the radio channel between each base station, reception quality of the measured radio channel, the difference from the maximum reception quality corresponding to the radio network is equal to or higher than a predetermined reference value transmission power control method in a CDMA mobile communication system according to claim 1, wherein ignoring the transmission power control information from the base station.
  4. 【請求項4】 符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、 各基地局は移動局からの送信電力制御情報の信頼度が低い場合または送信電力制御情報を受信できない場合、各基地 4. A transmission based on the mobile station the transmit power control information from a plurality of base stations during soft handover where the mobile station is simultaneously connected to a plurality of base stations in a mobile communication system of CDMA system power There performs transmission power control to be smaller, each of the plurality of base stations to decide the transmission power control information for the base station as the reception quality after combining the radio channel is equal to the reference quality of the base station transmitted to, the base station performs transmission power control based on transmission power control information from the mobile station, to the mobile station determines the transmission power control information based on the reception quality of the radio channel with the mobile station CDMA If the transmission power control method in a mobile communication system, each base station can not receive when the reliability is low or the transmission power control information of the transmission power control information from the mobile station, each base は独立に送信電力を決定することを特徴とするC C, characterized by determining the transmission power independently
    DMA移動通信システムにおける送信電力制御方法。 Transmission power control method in DMA mobile communication system.
  5. 【請求項5】 各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、同一送信電力での送信を継続することを特徴とする請求項4記載のCDMA移動通信システムにおける送信電力制御方法。 5. Each base station measures the reception quality of the radio channel with the mobile station, if the reception quality of the measured radio channel is less than a predetermined reference value, ignoring the transmission power control information from the mobile station and transmission power control method in a CDMA mobile communication system according to claim 4, characterized in that continues to transmit at the same transmission power.
  6. 【請求項6】 各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信を停止することを特徴とする請求項4記載のCDMA移動通信システムにおける送信電力制御方法。 6. Each base station measures the reception quality of the radio channel with the mobile station, if the reception quality of the measured radio channel is less than a predetermined reference value, ignoring the transmission power control information from the mobile station and transmission power control method in a CDMA mobile communication system according to claim 4, wherein the stopping the transmission.
  7. 【請求項7】 各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値減少することを特徴とする請求項4記載のCDMA移動通信システムにおける送信電力制御方法。 7. Each base station measures the reception quality of the radio channel with the mobile station, if the reception quality of the measured radio channel is less than a predetermined reference value, ignoring the transmission power control information from the mobile station and transmission power control method in a CDMA mobile communication system according to claim 4, wherein the transmission power decreases predetermined value.
  8. 【請求項8】 各基地局は移動局との無線回線の受信品質を測定し、この測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値増加することを特徴とする請求項4記載のCDMA移動通信システムにおける送信電力制御方法。 8. Each base station measures the reception quality of the radio channel with the mobile station, if the reception quality of the measured radio channel is less than a predetermined reference value, ignoring the transmission power control information from the mobile station and transmission power control method in a CDMA mobile communication system according to claim 4, wherein the transmission power is increased by a predetermined value.
  9. 【請求項9】 符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、 移動局は各基地局のとまり木チャネ 9. A mobile station in a mobile communication system of CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of connected to the synthesis station via the wire transmission line mobile station in soft handover performs transmission power control such that smaller the transmission power based on the transmission power control information from a plurality of base stations are, received after combining the radio channel with the plurality of base stations transmitted to the base station determines the transmission power control information for the base station as the quality is equal to the reference quality, the base station performs transmission power control based on transmission power control information from the mobile station, the mobile station in the transmission power control method in a CDMA mobile communication system determines the transmission power control information to the mobile station based on the reception quality of the radio link between the mobile station perch channel of each base station の受信品質を測定し、その測定結果を制御信号として各基地局を介して合成局に送信し、 合成局は前記測定結果であるとまり木チャネルの各受信品質を比較し、該受信品質の、最大受信品質からの差が所定の基準値以上である基地局の送信を停止させるように制御することを特徴とするCDMA移動通信システムにおける送信電力制御方法。 The reception quality is measured, and transmitted to the synthesizing station via each base station of the measurement result as a control signal, combining station compares each reception quality of the perch channel which is the measurement result, of the reception quality, the maximum transmission power control method in a CDMA mobile communication system, wherein a difference between the received quality is controlled so as to stop the transmission of the base station is above a predetermined reference value.
  10. 【請求項10】 符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、 移動局は各基地局のとまり木チャ 10. A mobile station in a mobile communication system of CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of connected to the synthesis station via the wire transmission line mobile station in soft handover performs transmission power control such that smaller the transmission power based on the transmission power control information from a plurality of base stations are, received after combining the radio channel with the plurality of base stations transmitted to the base station determines the transmission power control information for the base station as the quality is equal to the reference quality, the base station performs transmission power control based on transmission power control information from the mobile station, the mobile station in the transmission power control method in a CDMA mobile communication system determines the transmission power control information to the mobile station based on the reception quality of the radio link between the mobile station perch tea of ​​each base station ルの受信品質を測定し、この測定結果を制御信号として各基地局を介して合成局に送信し、 合成局は前記測定結果であるとまり木チャネルの各受信品質の最大のものに基づいて各基地局の送信電力制御情報を決定し、各基地局に通知し、 各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された前記送信電力制御情報に従って送信電力制御を行うことを特徴とするCDMA移動通信システムにおける送信電力制御方法。 Measures the reception quality of Le, the measurement result is transmitted to the synthesized station via each base station as a control signal, combining station maximum of each base based on what each reception quality of the perch channel which is the measurement result determines the transmission power control information for the station, and notifies each base station, the transmission power according to said transmission power control information is low reliability notified from the synthesis station transmission power control information from each base station the mobile station transmission power control method in a CDMA mobile communication system and performs control.
  11. 【請求項11】 符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、 移動局は各基地局のとまり木チャ 11. A mobile station in a mobile communication system of CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of connected to the synthesis station via the wire transmission line mobile station in soft handover performs transmission power control such that smaller the transmission power based on the transmission power control information from a plurality of base stations are, received after combining the radio channel with the plurality of base stations transmitted to the base station determines the transmission power control information for the base station as the quality is equal to the reference quality, the base station performs transmission power control based on transmission power control information from the mobile station, the mobile station in the transmission power control method in a CDMA mobile communication system determines the transmission power control information to the mobile station based on the reception quality of the radio link between the mobile station perch tea of ​​each base station ルの受信品質を測定し、この測定結果を制御信号として各基地局を介して合成局に送信し、 合成局は前記測定結果であるとまり木チャネルの各受信品質の比率に応じて各基地局の送信電力制御情報を決定し、各基地局に通知し、 各基地局は移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された前記送信電力制御情報に従って送信電力制御を行うことを特徴とするCDMA移動通信システムにおける送信電力制御方法。 Measures the reception quality of the Le, transmits the measurement result to combining station via the respective base stations as a control signal, synthesis station of each base station in accordance with the ratio of the reception quality of the perch channel which is the measurement result It determines the transmission power control information, and notifies each base station, if each base station has a low reliability of the transmission power control information from the mobile station, the transmission power control in accordance with the transmission power control information reported from the synthesized station transmission power control method in a CDMA mobile communication system, which comprises carrying out.
  12. 【請求項12】 符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、 各基地局からの送信電力制御情報の信頼度を測定する信頼度測定手段と、 この測定した信頼度の低い送信電力制御情報を無視するように制御 Transmission 12. The mobile station during soft handover the mobile station in the mobile communication system of CDMA system is simultaneously connected to a plurality of base stations based on the transmission power control information from a plurality of base station power There performs transmission power control to be smaller, each of the plurality of base stations to decide the transmission power control information for the base station as the reception quality after combining the radio channel is equal to the reference quality of the base station transmitted to, the base station performs transmission power control based on transmission power control information from the mobile station, to the mobile station determines the transmission power control information based on the reception quality of the radio channel with the mobile station CDMA in a mobile communication system, a confidence measurement means for measuring the reliability of the transmission power control information from each base station, control to ignore low transmission power control information reliability that this measure る制御手段とを有することを特徴とするC C, characterized in that it comprises a that control means
    DMA移動通信システム。 DMA mobile communication system.
  13. 【請求項13】 前記信頼度測定手段は、各基地局との無線回線の受信品質を測定する受信品質測定手段を有し、 前記制御手段は、前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、該無線回線に対応する基地局からの送信電力制御情報を無視するように制御する手段を有することを特徴とする請求項12記載のCDMA移動通信システム。 Wherein said reliability measurement unit comprises a reception quality measuring section that measures reception quality of a radio channel between each base station, the control unit may receive the radio channel measured by the reception quality measuring means If the quality is below a predetermined reference value, CDMA mobile communication system according to claim 12, wherein further comprising means for controlling so as to ignore the transmission power control information from the base station corresponding to the wireless line.
  14. 【請求項14】 前記信頼度測定手段は、各基地局との無線回線の受信品質を測定する受信品質測定手段を有し、 前記制御手段は、前記受信品質測定手段で測定した無線回線の受信品質の、最大受信品質からの差が所定の基準値以上である無線回線に対応する基地局からの送信電力制御情報を無視するように制御する手段を有することを特徴とする請求項12記載のCDMA移動通信システム。 14. The confidence measurement means includes a reception quality measuring section that measures reception quality of a radio channel between each base station, the control unit may receive the radio channel measured by the reception quality measuring means quality, the difference according to claim 12, characterized in that it comprises means for controlling so as to ignore the transmission power control information from the base station corresponding to the radio network is equal to or greater than a predetermined reference value from the maximum reception quality CDMA mobile communication system.
  15. 【請求項15】 符号分割多元接続方式の移動通信システムにおいて移動局が複数の基地局に同時に接続されるソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、 移動局からの送信電力制御情報の信頼度を測定する信頼度測定手段と、 この測定した信頼度が低い場合または送信電力制御情報を受信できな Transmission 15. The mobile station during soft handover the mobile station in the mobile communication system of CDMA system is simultaneously connected to a plurality of base stations based on the transmission power control information from a plurality of base station power There performs transmission power control to be smaller, each of the plurality of base stations to decide the transmission power control information for the base station as the reception quality after combining the radio channel is equal to the reference quality of the base station transmitted to, the base station performs transmission power control based on transmission power control information from the mobile station, to the mobile station determines the transmission power control information based on the reception quality of the radio channel with the mobile station CDMA in the mobile communication system, Do not receive a confidence measurement means for measuring the reliability of the transmission power control information from the mobile station, where confidence is low that the measurement or transmit power control information 場合、送信電力を独立に決定する送信電力制御手段とを有することを特徴とするCDMA移動通信システム。 If, CDMA mobile communication system; and a transmission power control means for determining the transmission power independently.
  16. 【請求項16】 前記信頼度測定手段は、移動局との無線回線の受信品質を測定する受信品質測定手段を有し、 前記送信電力制御手段は、前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、同一送信電力での送信を継続する手段を有することを特徴とする請求項15記載のCDMA移動通信システム。 16. The confidence measurement means includes a reception quality measuring section that measures reception quality of a radio channel with the mobile station, the transmission power control unit, the radio channel measured by the reception quality measuring means If the reception quality is below a predetermined reference value, CDMA mobile communication system according to claim 15, wherein further comprising means for ignoring transmission power control information from the mobile station continues to transmit at the same transmission power .
  17. 【請求項17】 前記信頼度測定手段は、移動局との無線回線の受信品質を測定する受信品質測定手段を有し、 前記送信電力制御手段は、前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信を停止する手段を有することを特徴とする請求項15記載のCDMA移動通信システム。 17. The confidence measurement means includes a reception quality measuring section that measures reception quality of a radio channel with the mobile station, the transmission power control unit, the radio channel measured by the reception quality measuring means If the reception quality is below a predetermined reference value, CDMA mobile communication system according to claim 15, wherein further comprising means for ignoring transmission power control information from the mobile station stops transmission.
  18. 【請求項18】 前記信頼度測定手段は、移動局との無線回線の受信品質を測定する受信品質測定手段を有し、 前記送信電力制御手段は、前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値減少する手段を有することを特徴とする請求項15記載のCDMA移動通信システム。 18. The confidence measurement means includes a reception quality measuring section that measures reception quality of a radio channel with the mobile station, the transmission power control unit, the radio channel measured by the reception quality measuring means If the reception quality is below a predetermined reference value, CDMA mobile communication system according to claim 15, wherein further comprising means for decreasing the predetermined value, ignoring the transmission power of the transmission power control information from the mobile station.
  19. 【請求項19】 前記信頼度測定手段は、移動局との無線回線の受信品質を測定する受信品質測定手段を有し、 前記送信電力制御情報手段は、前記受信品質測定手段で測定した無線回線の受信品質が所定の基準値以下である場合、移動局からの送信電力制御情報を無視し、送信電力を所定値増加する手段を有することを特徴とする請求項15記載のCDMA移動通信システム。 19. The confidence measurement means includes a reception quality measuring section that measures reception quality of a radio channel with the mobile station, the transmission power control information unit, the radio network as measured by the reception quality measuring means If the quality of reception is below the predetermined reference value, CDMA mobile communication system according to claim 15, wherein further comprising means for ignoring transmission power control information from the mobile station increases the transmission power predetermined value.
  20. 【請求項20】 符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、 移動局装置は、各基地局のとまり木チャネルの受信品質を測 20. A mobile station in a mobile communication system of CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of connected to the synthesis station via the wire transmission line mobile station in soft handover performs transmission power control such that smaller the transmission power based on the transmission power control information from a plurality of base stations are, received after combining the radio channel with the plurality of base stations transmitted to the base station determines the transmission power control information for the base station as the quality is equal to the reference quality, the base station performs transmission power control based on transmission power control information from the mobile station, the mobile station in CDMA mobile communication system determines the transmission power control information to the mobile station based on the reception quality of the radio link between the mobile station apparatus measures the reception quality of the perch channel of each base station する測定手段と、該測定手段で測定した結果を制御信号として各基地局を介して合成局に送信する送信手段とを有し、 合成局装置は、前記送信手段から送信された前記測定結果であるとまり木チャネルの各受信品質を比較し、該受信品質の、最大受信品質からの差が所定の基準値以上である基地局の送信を停止させるように制御する制御手段を有することを特徴とするCDMA移動通信システム。 Measuring means for, and a transmitting means for transmitting the synthesized station via each base station the results of measurement by said measuring means as a control signal, synthesizing station apparatus, in the measurement result transmitted from said transmitting means comparing each received quality of a perch channel, in the reception quality, the difference between the maximum reception quality is characterized by having a control means for controlling to stop the transmission of the base station is above a predetermined reference value CDMA mobile communication system.
  21. 【請求項21】 符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおいて、 移動局装置は、各基地局のとまり木チャネルの受信品質を測 21. A mobile station in a mobile communication system of CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of connected to the synthesis station via the wire transmission line mobile station in soft handover performs transmission power control such that smaller the transmission power based on the transmission power control information from a plurality of base stations are, received after combining the radio channel with the plurality of base stations transmitted to the base station determines the transmission power control information for the base station as the quality is equal to the reference quality, the base station performs transmission power control based on transmission power control information from the mobile station, the mobile station in CDMA mobile communication system determines the transmission power control information to the mobile station based on the reception quality of the radio link between the mobile station apparatus measures the reception quality of the perch channel of each base station する測定手段と、該測定手段で測定した結果を制御信号として各基地局を介して合成局に送信する送信手段とを有し、 合成局装置は、前記送信手段から送信された測定結果であるとまり木チャネルの各受信品質の最大のものに基づいて各基地局の送信電力制御情報を決定し、各基地局に通知する手段を有し、 基地局装置は、移動局からの送信電力制御情報の信頼度が低い場合、前記合成局装置から通知された前記送信電力制御情報に従って送信電力制御を行う制御手段を有することを特徴とするCDMA移動通信システム。 A measuring means for, and transmission means for transmitting the synthesized station via each base station the results of measurement by said measuring means as the control signal, the combining station apparatus is the measurement result transmitted from said transmitting means the transmission power control information of each base station determined based on what the largest of the reception quality of the perch channel, and means for notifying each base station, the base station apparatus, the transmission power control information from the mobile station when the reliability is low, CDMA mobile communication system characterized by having a control means for performing transmission power control in accordance with the transmission power control information reported from the synthesis station.
  22. 【請求項22】 符号分割多元接続方式の移動通信システムにおいて移動局は無線回線を介して複数の基地局に同時に接続され、該複数の基地局は有線伝送路を介して合成局に接続されているソフトハンドオーバ時において移動局は複数の基地局からの各送信電力制御情報に基づいて送信電力がより小さくなるように送信電力制御を行い、複数の基地局との無線回線を合成した後の受信品質が基準品質に等しくなるように基地局用の送信電力制御情報を決定して各基地局に送信し、基地局は移動局からの送信電力制御情報に基づいて送信電力制御を行い、移動局との無線回線の受信品質に基づいて送信電力制御情報を決定して移動局に送信するCDMA移動通信システムにおける送信電力制御方法において、 移動局装置は、各基地局のとまり 22. A mobile station in a mobile communication system of CDMA system is simultaneously connected to a plurality of base stations via a radio network, the base station of said plurality of connected to the synthesis station via the wire transmission line mobile station in soft handover performs transmission power control such that smaller the transmission power based on the transmission power control information from a plurality of base stations are, received after combining the radio channel with the plurality of base stations transmitted to the base station determines the transmission power control information for the base station as the quality is equal to the reference quality, the base station performs transmission power control based on transmission power control information from the mobile station, the mobile station in the transmission power control method in a CDMA mobile communication system for transmitting determined by the mobile station transmission power control information based on the reception quality of the radio link between the mobile station apparatus, stops of each base station チャネルの受信品質を測定する測定手段と、該測定手段で測定した結果を制御信号として各基地局を介して合成局に送信する送信手段とを有し、 合成局装置は、前記送信手段から送信された前記測定結果であるとまり木チャネルの各受信品質の比率に応じて各基地局の送信電力制御情報を決定し、各基地局に通知する手段を有し、 基地局装置は、移動局からの送信電力制御情報の信頼度が低い場合、合成局から通知された前記送信電力制御情報に従って送信電力制御を行う制御手段を有することを特徴とするCDMA移動通信システム。 A measuring section that measures reception quality of a channel, and a transmission means for transmitting the synthesized station via each base station the results of measurement by said measuring means as a control signal, synthesizing station apparatus, transmitted from said transmitting means has been the transmission power control information of each base station determined in accordance with the ratio of the reception quality of the measurement is the result perch channel includes a means for notifying each base station, the base station apparatus, from the mobile station If a low reliability of the transmission power control information, CDMA mobile communication system characterized by having a control means for performing transmission power control in accordance with the transmission power control information reported from the synthesis station.
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