JPH09233010A - Mobil radio frequency selective repeater - Google Patents

Mobil radio frequency selective repeater

Info

Publication number
JPH09233010A
JPH09233010A JP3516596A JP3516596A JPH09233010A JP H09233010 A JPH09233010 A JP H09233010A JP 3516596 A JP3516596 A JP 3516596A JP 3516596 A JP3516596 A JP 3516596A JP H09233010 A JPH09233010 A JP H09233010A
Authority
JP
Japan
Prior art keywords
amplifiers
base station
frequency
mobile station
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3516596A
Other languages
Japanese (ja)
Other versions
JP3095126B2 (en
Inventor
Masakatsu Yamazaki
正勝 山崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP3516596A priority Critical patent/JP3095126B2/en
Publication of JPH09233010A publication Critical patent/JPH09233010A/en
Application granted granted Critical
Publication of JP3095126B2 publication Critical patent/JP3095126B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To eliminate deterioration in speech quality of all relay waves by separating received radio waves from a mobile station for each frequency channel, amplifying them and using an automatic gain control means so as to keep levels of the radio waves to be a prescribed level or below. SOLUTION: Received radio waves with channel frequencies f2 , f4 from a mobile station by an antenna 16 are given to a distributer 36, from which they are distributed to frequency mixers 372 , 374 . Intermediate frequency signals corresponding to the channel frequencies f2 , f4 are selected by filters 382 , 384 , amplified by intermediate frequency amplifiers 412 , 414 and fed to frequency mixers 422 , 424 . The signals with the channel frequencies f2 , f4 are selected by filters 432 , 434 and synthesized by a synthesizer 44, and the synthesized signal is emitted to a base station from an antenna 12. Outputs from the intermediate frequency amplifiers 412 , 414 are given to automatic gain controllers 462 , 464 and outputs of them control respectively the attenuation of variable attenuators 392 , 394 .

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】この発明は移動電話や無線呼
び出しなどの移動通信方式において、山影、地下街など
の不感地域を救済するために、その不感地域を移動する
移動局からの電波を基地局へ中継増幅し、また基地局か
らの電波を移動局へ中継増幅する、あるいは基地局から
の電波を移動局へのみ中継増幅する中継装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system such as a mobile telephone or a radio call, in order to relieve a blind area such as a mountain shadow or an underground mall, a radio wave from a mobile station moving in the blind area is transmitted to a base station. The present invention relates to a relay device that relays and amplifies, and relays and amplifies radio waves from a base station to a mobile station, or relays and amplifies radio waves from a base station only to a mobile station.

【0002】[0002]

【従来の技術】図4に移動通信方式における従来の無線
中継増幅装置を示す。無線基地局11からの電波F1は
アンテナ12から受信入力され、送受共用器13を通じ
増幅器14によって増幅されて送受共用器15を通じア
ンテナ16から移動局17にむけて放射される。同様に
移動局16からの電波f1はアンテナ16から受信入力
され、送受共用器15を通じ増幅器18によって増幅さ
れて送受共用器13を通じアンテナ12から無線基地局
11に向けて放射される。
2. Description of the Related Art FIG. 4 shows a conventional wireless relay amplifier in a mobile communication system. The radio wave F1 from the radio base station 11 is received and input from the antenna 12, amplified by the amplifier 14 through the duplexer 13, and radiated from the antenna 16 toward the mobile station 17 through the duplexer 15. Similarly, the radio wave f1 from the mobile station 16 is received and input from the antenna 16, amplified by the amplifier 18 through the duplexer 15, and radiated from the antenna 12 toward the wireless base station 11 through the duplexer 13.

【0003】増幅器の最大出力レベルは、増幅器14
(下り方向増幅器)については入力波数と移動局17が
受信できる範囲(サービスエリア)に応じて決定され、
増幅器18(上り方向増幅器)については、サービスエ
リア内の移動局17からアンテナ16への入力波数、入
力信号レベルと装置の最大増幅度から決定される。特
に、上り方向増幅器18については、移動局17が中継
装置19の近くにいる場合での入力レベルを考慮した場
合には増幅器の規模がかなり大きくなるため、中継装置
19と移動局17の距離がある程度以下の場合には利得
制御によって出力レベルを抑えることで、中継装置19
の経済化を図っている。
The maximum output level of the amplifier is the amplifier 14
(Downward amplifier) is determined according to the input wave number and the range (service area) that the mobile station 17 can receive,
The amplifier 18 (upstream amplifier) is determined from the number of waves input from the mobile station 17 in the service area to the antenna 16, the input signal level and the maximum amplification degree of the device. In particular, regarding the upstream amplifier 18, when the input level when the mobile station 17 is close to the relay device 19 is taken into consideration, the scale of the amplifier becomes considerably large, so that the distance between the relay device 19 and the mobile station 17 is increased. When the output level is suppressed to a certain level or less by controlling the output level, the relay device 19
Is trying to make the economy more economical.

【0004】[0004]

【発明が解決しようとする課題】従来の中継装置19で
は利得制御は高出力増幅器段でのみ行っているため、例
えば図5に示すように、中継装置19のサービスエリア
21内に、中継装置19の近くの移動局172 と遠くの
移動局174 と、これらの中間の距離にある移動局17
3 とからの各電波を同時に無線基地局へ中継する状態に
おいては、移動局172 からの電波のレベルが他の移動
局からの電波よりも著しく大きくなり、この大きなレベ
ルに対し高出力増幅器段での利得制御が作用して、増幅
器の利得が低下され、一方、サービスエリア21の端部
の移動局174 からの電波は中継装置19で弱いレベル
で受信され、これが前記利得制御により上り増幅器18
の利得が低下されており、一層小さいレベルとされ、無
線基地局11への中継が不可能となる。
Since the conventional relay device 19 controls the gain only in the high-power amplifier stage, the relay device 19 is provided in the service area 21 of the relay device 19 as shown in FIG. 5, for example. Mobile station 17 2 near and remote station 17 4 and mobile station 17 at an intermediate distance between them.
In the state in which the radio waves from 3 and 3 are simultaneously relayed to the radio base station, the level of the radio wave from the mobile station 17 2 becomes significantly higher than the radio waves from the other mobile stations, and the high output amplifier stage with respect to this large level. Gain control of the amplifier is reduced, while the radio wave from the mobile station 17 4 at the end of the service area 21 is received by the relay device 19 at a weak level. 18
Gain is lowered to a lower level and relay to the radio base station 11 becomes impossible.

【0005】また中継装置19の近くの移動局172
らの1つの電波のみを中継する場合は、他の中継電波が
ないため、その1波だけで増幅器を一杯に動作させるた
め、その1波については著しく大きな電波レベルが中継
装置19から放射され、基地局11を越えて他の基地局
まで達しその他の基地局のサービスエリアで使用されて
いる同一チャネルの信号に干渉を与えるという問題があ
った。
When relaying only one radio wave from the mobile station 17 2 near the relay device 19, since there is no other relay radio wave, the one wave is used to fully operate the amplifier. With respect to the above, there is a problem that a remarkably large radio wave level is radiated from the relay device 19 and reaches the other base station beyond the base station 11 to interfere with the signal of the same channel used in the service area of the other base station. It was

【0006】更に中継装置19に、本来の無線基地局1
1から電波のみならず、他の無線基地局又はサービスエ
リア21外の移動局からの電波が到来し、この不要電波
をも中継増幅すると、それだけ無線基地局11からの本
来の中継増幅すべき電波の中継装置出力電力が低下し、
サービスエリア21内の移動局に対して、通信品質を保
持できなくなることがあった。
Further, the relay device 19 is provided with the original radio base station 1
Not only the radio wave from 1, but also the radio wave from another radio base station or a mobile station outside the service area 21 arrives, and if this unnecessary radio wave is also relay-amplified, the radio wave from the radio base station 11 to be originally amplified and relayed. Output power of the relay device of
Communication quality may not be maintained for mobile stations in the service area 21.

【0007】この発明の目的は、中継波すべての通話品
質を劣化させることなく、また、他のサービスエリアで
使用されている同一信号に干渉を与えることなく不感地
救済、サービス領域形成を行うことができる移動無線通
信用中継装置を提供することにある。
An object of the present invention is to perform dead area relief and service area formation without deteriorating the communication quality of all relay waves and without interfering with the same signal used in other service areas. It is to provide a relay device for mobile radio communication capable of performing the above.

【0008】[0008]

【課題を解決するための手段】請求項1の発明によれば
移動局からの受信電波は周波数チャネルごとに分離さ
れ、これら分離された周波数チャネルごとの信号がそれ
ぞれ各別の増幅器で増幅され、これら増幅器の出力が、
自動利得制御手段によりそれぞれ所定レベル以下にされ
る。
According to the invention of claim 1, the radio waves received from the mobile station are separated for each frequency channel, and the separated signals for each frequency channel are amplified by respective amplifiers. The output of these amplifiers
The automatic gain control means adjusts the levels to below a predetermined level.

【0009】この構成によれば、移動通信の特徴である
サービスエリア内の移動局からのあらゆる受信レベルに
対して、それぞれに最適な利得制御を行うことができ、
無線中継増幅装置と移動局の距離が近くなって過入力が
あっても、サービスエリア内の他の移動局の通話に影響
を与えることなく、また、他のサービスエリアで使用さ
れている同一チャネル信号に干渉を与えることなくサー
ビスを行うことができる。
With this configuration, it is possible to perform optimum gain control for each reception level from mobile stations within the service area, which is a feature of mobile communication.
Even if the distance between the wireless relay amplifier and the mobile station becomes short and there is excessive input, it does not affect the calls of other mobile stations in the service area, and the same channel used in other service areas. Service can be performed without interfering with the signal.

【0010】更にこの利得制御を前提とし、移動通信の
特徴であるサービスエリア内の移動局からのあらゆる受
信レベルを、無線基地局に伝送するレベルが所要品質を
満足するように過入力について利得制御を行うことで装
置の経済化ができ、また、他のサービスエリアで使用さ
れている同一信号に干渉を与えずに伝送することができ
る。
Further, on the premise of this gain control, gain control is performed for excessive input so that the level of transmission of all reception levels from mobile stations within the service area, which is a feature of mobile communication, to the radio base station satisfies the required quality. By doing so, the device can be made economical, and the same signal used in other service areas can be transmitted without interference.

【0011】請求項3の発明によれば無線基地局からの
受信電波は周波数チャネルごとに分離され、この分離さ
れた周波数チャネルごとの信号はそれぞれ各別に増幅器
で増幅され、これら増幅器の出力は自動利得制御手段に
よりそれぞれ所定レベル以下にされる。この構成によれ
ば下り中継増幅(基地局から移動局への中継)におい
て、不要な電波を中継増幅するおそれがなく、移動局へ
放射する電波のレベルが低下して通信品質が劣化するお
それはない。
According to the third aspect of the present invention, the radio waves received from the radio base station are separated for each frequency channel, the separated signals for each frequency channel are respectively amplified by amplifiers, and the outputs of these amplifiers are automatically output. The gain control means adjusts the levels to below a predetermined level. According to this configuration, in downlink relay amplification (relay from the base station to the mobile station), there is no risk of relay amplification of unnecessary radio waves, and there is no risk that the level of radio waves radiated to the mobile station will decrease and communication quality will deteriorate. Absent.

【0012】[0012]

【発明の実施の形態】図1にこの発明を適用した周波数
変換形の中継装置の実施例を示す。無線基地局と送受信
するアンテナ12により受信された無線基地局からの下
り周波数チャネル電波F1 ,F3 は送受共用器13を通
り必要に応じて受信増幅器23で増幅された後、分配器
24により周波数混合器251 ,253 へ分配供給さ
れ、周波数混合器251 ,253 の出力からそれぞれ中
間周波信号がフィルタ261 ,263 でそれぞれ各チャ
ネル信号F1,F2と対応したものに選出され、これら
中間周波信号は可変減衰器271 ,273 を通じ、更に
中間周波増幅器281 ,283 で増幅されて周波数混合
器291 ,293 に供給され、周波数混合器291,2
3 の出力からそれぞれフィルタ311 ,313 により
チャネル周波数F2,F4 の信号が選出され、合成器3
2で合成され、その合成出力は出力増幅器33で増幅さ
れ、送受共用器15を通じアンテナ16から移動局へ放
射される。中間周波増幅器281 ,283 の各出力はそ
れぞれ自動利得増幅器341 ,343へ分岐供給され、
自動利得増幅器341 ,343 の各出力によりそれぞれ
可変減衰器271 ,273 の減衰量が制御される。
FIG. 1 shows an embodiment of a frequency conversion type repeater to which the present invention is applied. Downlink frequency channel radio waves F 1 and F 3 from the radio base station received by the antenna 12 transmitting and receiving to and from the radio base station pass through the duplexer 13, are amplified by the reception amplifier 23 as necessary, and then are distributed by the distributor 24. is distributed and supplied to the frequency mixer 25 1, 25 3, elected to that intermediate frequency signals, respectively from the output of the frequency mixer 25 1, 25 3 corresponding to the filter 26 1, each channel signal respectively 26 3 F1, F2 , These intermediate frequency signals pass through variable attenuators 27 1 and 27 3, are further amplified by intermediate frequency amplifiers 28 1 and 28 3 , and are supplied to frequency mixers 29 1 and 29 3 , and frequency mixers 29 1 and 2 3.
Signals of channel frequencies F 2 and F 4 are selected from the output of 9 3 by filters 31 1 and 31 3 , respectively, and the combiner 3
The combined output is amplified by the output amplifier 33 and radiated from the antenna 16 to the mobile station through the duplexer 15. The outputs of the intermediate frequency amplifiers 28 1 and 28 3 are branched and supplied to the automatic gain amplifiers 34 1 and 34 3 , respectively.
The outputs of the automatic gain amplifiers 34 1 and 34 3 control the attenuation amounts of the variable attenuators 27 1 and 27 3 , respectively.

【0013】一方、移動局からアンテナ16に受信され
たチャネル周波数(f2 ,f4 )の受信電波は送受共用
器15を通じ、必要に応じ受信増幅器35で増幅され、
分配器36で周波数混合器372 ,374 へ分配供給さ
れ、周波数混合器372 ,374 の出力からそれぞれチ
ャネル信号f2 ,f4 と対応した中間周波信号がフィル
タ382 ,384 でそれぞれ選出され、それぞれ可変減
衰器392 ,394 を通じ、中間周波増幅器412 ,4
4 で増幅され、周波数混合器422 ,424へ供給さ
れ、周波数混合器422 ,424 の出力からフィルタ4
2 ,434 でそれぞれチャネル周波数f1 ,f3 の各
信号が選出され、合成器44で合成され、その合成出力
は出力増幅器45で増幅され、送受共用器13を通じア
ンテナ12から基地局へ放射される。中間周波増幅器4
2 ,424 の各出力は自動利得制御器462 ,464
へ分岐供給され、自動利得制御器462 ,464 の出力
で可変減衰器392 ,394 の減衰量がそれぞれ制御さ
れる。
On the other hand, the received radio wave of the channel frequency (f 2 , f 4 ) received by the antenna 16 from the mobile station passes through the duplexer 15 and is amplified by the reception amplifier 35 as necessary,
Distributor 36 is distributed and supplied to the frequency mixer 37 2, 37 4, the intermediate frequency signal corresponding to each channel signal f 2, f 4 from the output of the frequency mixer 37 2, 37 4 in the filter 38 2, 38 4 The intermediate frequency amplifiers 41 2 , 4 are respectively selected and passed through the variable attenuators 39 2 , 39 4 , respectively.
1 is amplified by 4, it is supplied to the frequency mixer 42 2, 42 4, frequency mixer 42 2, 42 filter 4 from fourth output
The signals of the channel frequencies f 1 and f 3 are selected by 3 2 and 43 4 , and are combined by the combiner 44, and the combined output is amplified by the output amplifier 45, and is transmitted from the antenna 12 to the base station through the transmission / reception duplexer 13. Is emitted. Intermediate frequency amplifier 4
The outputs of 1 2 and 42 4 are automatic gain controllers 46 2 and 46 4 respectively.
The output of the automatic gain controllers 46 2 and 46 4 controls the attenuation amounts of the variable attenuators 39 2 and 39 4 , respectively.

【0014】上り下りの各1対のチャネルごとに、この
例では基地局からの下りチャネルF 1 と基地局への上り
チャネルf1 との組、また基地局からの下りチャネルF
3 と基地局への上りチャネルf3 との組ごとと自動利得
増幅手段471 ,473 が設けられ、各チャネルごとに
分離され、かつ自動利得増幅される。この例では自動利
得増幅手段471 ,473 で周波数変換増幅を行ってい
るため、各チャネルごとに基準発振器481 ,483
設けられ、基準発振器481 ,483 の出力が周波数シ
ンセサイザ491 ,511 ,522 ,532 ,493
513 ,524,534 へ分配供給され、これら周波数
シンセサイザの出力が局部信号として各対応する周波数
混合器へ供給され、各周波数シンセサイザにそれぞれ設
定された周波数に応じた1つのチャネルと対応する中間
周波信号のみが中間周波フィルタより取り出される。
For each pair of upstream and downstream channels,
In the example, the downlink channel F from the base station 1And going up to the base station
Channel f1, And downlink channel F from the base station
ThreeAnd the up channel f to the base stationThreeEach pair with and automatic gain
Amplifying means 471, 47ThreeIs provided for each channel
Separated and auto-gain amplified. In this example
Gain amplification means 471, 47ThreeIs performing frequency conversion amplification
Therefore, the reference oscillator 481, 48ThreeBut
The reference oscillator 48 is provided.1, 48ThreeOutput is
Synthesizer 491, 511, 52Two, 53Two, 49Three,
51Three, 52Four, 53FourThese frequencies are distributed and supplied to
The output of the synthesizer is the local signal for each corresponding frequency
It is supplied to the mixer and installed in each frequency synthesizer.
One channel corresponding to a specified frequency and corresponding intermediate
Only the frequency signal is extracted from the intermediate frequency filter.

【0015】いま例えば図5に示すように中継装置19
のアンテナ16に、中継装置19に近い移動局172
らチャネル周波数f2 の電波がレベルE2 で、サービス
エリア21の端の移動局174 からチャネル周波数f4
の電波がレベルE4 で移動局172 ,174 の中間の位
置の移動局173 からチャネル周波数f3 の電波がE 3
でそれぞれ受信されたとする。中継装置19の各1波当
りの最大出力電力をP 0 、中継装置19の初期利得をG
0 とし、簡単のためにアンテナ16の利得はないものと
する。ここで最大出力電力P0 は無線基地局に伝送する
電波レベルが所要の品質を満足する範囲でなるべく小さ
く、つまり、他のサービスエリアの無線基地局で使用さ
れている同一チャネル周波数の電波に干渉を与えないよ
うな値とする。
Now, for example, as shown in FIG.
The antenna 16 of the mobile station 17 near the relay device 19TwoOr
Channel frequency fTwoLevel ETwoAnd service
Mobile station 17 at the end of area 21FourTo the channel frequency fFour
Level EFourAt mobile station 17Two, 17FourThe middle place of
Mobile station 17ThreeTo the channel frequency fThreeRadio wave is E Three
It is assumed that each is received by. Each one of the relay device 19
Maximum output power of P 0, The initial gain of the relay device 19 is G
0And, for simplicity, the antenna 16 has no gain.
I do. Where the maximum output power P0Transmits to the wireless base station
The radio wave level is as low as possible within the range that satisfies the required quality.
That is, used in a radio base station in another service area.
Do not interfere with radio waves of the same channel frequency
It is a value.

【0016】この時、各移動局172 ,173 ,174
からの電波の中継装置19からの出力電力P2 ,P3
4 はそれぞれP2 =E2 +G0 、P3 =E3 +G0
4=E4 +G0 となる。中継装置19と各移動局との
距離の関係からE2 >E3 >E4 であり、いまP2 >P
0 、P3 =P0 、P4 <P0 になったとする。つまり図
2に示す関係になったとする。この時、この発明では、
0 を超える移動局172 からの受信電波の中継増幅に
対しては自動利得制御器462 (図1参照)が動作し
て、P2 ≦P0 となるように中継利得が下げられる。つ
まりP0 を越えるおそれがある信号に対してのみP0
下又はP0 と等しくなるように自動利得制御が行われ
る。このようにして中継装置の総合出力を抑えることが
でき、かつ中継装置19から遠くに在る移動局からの受
信レベルが弱い電波に対する増幅利得は下げられること
なく、G0 だけ必ず大とされ、よって所要の通信品質が
保持される。
At this time, each mobile station 17 2 , 17 3 , 17 4
Output power P 2 , P 3 , from the relay device 19 of the radio wave from the
P 4 is P 2 = E 2 + G 0 , P 3 = E 3 + G 0 , respectively.
P 4 = E 4 + G 0 . From the relationship between the distance between the relay device 19 and each mobile station, E 2 > E 3 > E 4 , and now P 2 > P
It is assumed that 0 , P 3 = P 0 , and P 4 <P 0 . That is, it is assumed that the relationship shown in FIG. At this time, in the present invention,
Operating the automatic gain controller 46 2 (see FIG. 1) for receiving radio relay amplification from the mobile station 17 2 exceeding P 0, the relay gain is lowered so that P 2 ≦ P 0. That automatic gain control is performed so as to be equal to P 0 or less or P 0 only for signals which may exceed the P 0. In this way, the total output of the relay device can be suppressed, and the amplification gain for a radio wave whose reception level from the mobile station far from the relay device 19 is weak is not lowered, and only G 0 is always large. Therefore, the required communication quality is maintained.

【0017】図3にこの発明をダイバーシチ受信中継装
置に適用した例を示し、図1と対応する部分に同一符号
を付けてある。この例ではアンテナ16の他に移動局か
らの電波を受信するアンテナ61がアンテナ16から所
定距離以上離して設けられ、アンテナ61の受信電波は
帯域制限フィルタ62を通じ、受信増幅器63で増幅さ
れ、分配器64で分配され、自動利得増幅手段47で図
1について説明したように、各チャネルごとに必要に応
じて中間周波信号に変換され、自動利得制御増幅が行わ
れ、受信周波数と異なる周波数に変換された後、合成器
65で合成され、出力増幅器66で増幅され、帯域制限
フィルタ67を通じアンテナ68から無線基地局へ放射
される。アンテナ68はアンテナ12から所定距離以上
離して設けられる。
FIG. 3 shows an example in which the present invention is applied to a diversity receiving / relaying apparatus, and parts corresponding to those in FIG. In this example, an antenna 61 for receiving radio waves from mobile stations is provided apart from the antenna 16 by a predetermined distance or more, and the radio waves received by the antenna 61 are amplified by a reception amplifier 63 through a band limiting filter 62 and distributed. 1 and is converted by the automatic gain amplifying means 47 into an intermediate frequency signal as needed for each channel, and automatic gain control amplification is performed to convert it into a frequency different from the reception frequency. After being combined, they are combined by the combiner 65, amplified by the output amplifier 66, and radiated from the antenna 68 to the radio base station through the band limiting filter 67. The antenna 68 is provided apart from the antenna 12 by a predetermined distance or more.

【0018】上述においては自動利得制御増幅手段にお
いて、受信電波の周波数と、送信電波の周波数とを異な
らしたが、受信電波の周波数と送信電波の周波数とを一
致させてもよい。この場合は、送信電波が受信側と結合
しないように、アンテナの指向性、配置などを選定す
る。この発明は不感地帯をなくすために用いる中継装置
のみならず、例えば使用可能チャネルに比較的余裕があ
る基地局のその余裕のチャネルを、サービスゾーンの拡
張のために新たに設けたゾーンの基地局に中継装置で中
継し、新ゾーンに対するサービスを行う場合の前記中継
装置などにもこの発明を適用できる。
In the above description, in the automatic gain control amplifying means, the frequency of the received radio wave and the frequency of the transmitted radio wave are different, but the frequency of the received radio wave and the frequency of the transmitted radio wave may be the same. In this case, the antenna directivity, placement, etc. are selected so that the transmitted radio waves are not coupled to the receiving side. The present invention is not limited to the relay device used to eliminate the dead zone, but for example, a base station of a zone newly provided for expanding the service zone is provided with a channel of the base station having a relatively large available channel. The present invention can also be applied to the above-mentioned relay device or the like in the case of performing a service to a new zone by relaying to a new zone.

【0019】更に請求項3の発明は無線呼び出しのよう
に無線基地局からの電波を移動局へのみ中継する。つま
り下り中継のみ(上り中継を行わない)の中継装置にも
適用できる。
Further, the invention of claim 3 relays the radio wave from the radio base station only to the mobile station like radio calling. In other words, it can be applied to a relay device that only performs downlink relay (does not perform uplink relay).

【0020】[0020]

【発明の効果】以上述べたようにこの発明によれば、各
移動局からの電波を各別に増幅し、1波当りの最大許容
電力を越える場合は、越えないように自動的に利得を下
げているため、高出力電波が放射され、他のサービスエ
リアの同一チャネル電波に干渉を与えるおそれがなく、
かつ移動局から弱い受信レベルの電波も十分な増幅をし
て基地局へ放射することができる。
As described above, according to the present invention, the radio waves from each mobile station are individually amplified, and when the maximum permissible power per wave is exceeded, the gain is automatically lowered so as not to exceed it. Therefore, high-power radio waves are radiated, and there is no risk of interfering with co-channel radio waves in other service areas.
In addition, even a weak reception level radio wave from the mobile station can be sufficiently amplified and radiated to the base station.

【0021】また基地局からの電波を受信するアンテナ
12に他の基地局からの他のチャネルの電波が受信され
た場合、この他のチャネルの電波は従来においては本来
の基地局からの電波と同時に中継増幅され、それだけ、
本来の電波に対する増幅利得が減少するが、この発明で
は、この中継装置で用いられるチャネルのみしか中継増
幅しないため、つまり本来の基地局からの電波のみしか
中継増幅しないため、前述した利得低下が生じるおそれ
はない。
Further, when the antenna 12 for receiving the radio wave from the base station receives the radio wave of another channel from another base station, the radio wave of this other channel is conventionally different from the original radio wave from the base station. It is relayed and amplified at the same time.
Although the amplification gain with respect to the original radio wave is reduced, in the present invention, only the channel used in this relay device is relay-amplified, that is, only the radio wave from the original base station is relay-amplified, so that the above-mentioned gain decrease occurs. There is no fear.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の実施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of the present invention.

【図2】移動局上りの受信電波レベルと増幅出力との関
係を示す図。
FIG. 2 is a diagram showing a relationship between a received radio wave level upstream of a mobile station and an amplified output.

【図3】この発明をダイバーシチ受信に適用した例を示
すブロック図。
FIG. 3 is a block diagram showing an example in which the present invention is applied to diversity reception.

【図4】従来の移動通信中継装置を示すブロック図。FIG. 4 is a block diagram showing a conventional mobile communication relay device.

【図5】中継装置と、そのサービスエリア内の各種位置
の移動局とを示す図。
FIG. 5 is a diagram showing a relay device and mobile stations at various positions within its service area.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 移動局からの受信電波を周波数チャネル
ごとに分離する手段と、 上記分離された周波数チャネルごとの信号をそれぞれ増
幅する複数の増幅器と、 上記各増幅器の出力をそれぞれ所定レベル以下にする複
数の自動利得制御手段と、 上記複数の増幅器の出力を合成して基地局へ送信する電
力増幅器とを具備する移動無線周波数選択形中継装置。
1. A means for separating a radio wave received from a mobile station for each frequency channel, a plurality of amplifiers for amplifying the separated signals for each frequency channel, and outputs of each of the amplifiers below a predetermined level. A mobile radio frequency selective repeater comprising: a plurality of automatic gain control means for controlling a plurality of outputs; and a power amplifier for combining outputs of the plurality of amplifiers and transmitting the combined power to a base station.
【請求項2】 基地局からの受信電波を周波数チャネル
ごとに分離する第2分離手段と、 その第2分離手段で分離された周波数チャネルごとの信
号をそれぞれ増幅する複数の第2増幅器と、 これら第2増幅器の出力をそれぞれ所定レベル以下にす
る複数の第2自動利得制御手段と、 上記複数の第2増幅器の出力を合成して移動局へ送信す
る第2電力増幅器とを具備する請求項1記載の移動無線
周波数選択形中継装置。
2. A second separating means for separating a radio wave received from a base station for each frequency channel, and a plurality of second amplifiers for amplifying the signals for each frequency channel separated by the second separating means, respectively. 2. A plurality of second automatic gain control means for controlling the outputs of the second amplifiers to be below a predetermined level, respectively, and a second power amplifier for combining the outputs of the plurality of second amplifiers and transmitting them to the mobile station. The mobile radio frequency selective repeater described.
【請求項3】 基地局からの受信電波を周波数チャネル
ごとに分離する分離手段と、 その分離手段で分離された周波数チャネルごとの信号を
それぞれ増幅する複数の増幅器と、 これら複数の増幅器の出力をそれぞれ所定レベル以下に
する複数の自動利得制御手段と、 上記複数の増幅器の出力を合成して移動局へ送信する電
力増幅器と、 を具備する移動無線周波数選択形中継装置。
3. Separation means for separating a radio wave received from a base station for each frequency channel, a plurality of amplifiers for respectively amplifying the signals for each frequency channel separated by the separation means, and outputs of the plurality of amplifiers. A mobile radio frequency selective repeater comprising: a plurality of automatic gain control means each having a predetermined level or less; and a power amplifier for combining outputs of the plurality of amplifiers and transmitting the combined power to a mobile station.
JP3516596A 1996-02-22 1996-02-22 Mobile radio frequency selective repeater Expired - Lifetime JP3095126B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3516596A JP3095126B2 (en) 1996-02-22 1996-02-22 Mobile radio frequency selective repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3516596A JP3095126B2 (en) 1996-02-22 1996-02-22 Mobile radio frequency selective repeater

Publications (2)

Publication Number Publication Date
JPH09233010A true JPH09233010A (en) 1997-09-05
JP3095126B2 JP3095126B2 (en) 2000-10-03

Family

ID=12434268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3516596A Expired - Lifetime JP3095126B2 (en) 1996-02-22 1996-02-22 Mobile radio frequency selective repeater

Country Status (1)

Country Link
JP (1) JP3095126B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002101032A (en) * 2000-09-21 2002-04-05 Maspro Denkoh Corp Gap filler for ground-wave digital broadcasting
KR20020069572A (en) * 2001-02-26 2002-09-05 주식회사 웨이브텔레콤 Wireless repeater having wide range of gain adjustment margin
JP2007060212A (en) * 2005-08-24 2007-03-08 Sharp Corp Radio communication system and repeater device for up-link

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002101032A (en) * 2000-09-21 2002-04-05 Maspro Denkoh Corp Gap filler for ground-wave digital broadcasting
JP4663087B2 (en) * 2000-09-21 2011-03-30 マスプロ電工株式会社 Gap filler for digital terrestrial broadcasting
KR20020069572A (en) * 2001-02-26 2002-09-05 주식회사 웨이브텔레콤 Wireless repeater having wide range of gain adjustment margin
JP2007060212A (en) * 2005-08-24 2007-03-08 Sharp Corp Radio communication system and repeater device for up-link
JP4611842B2 (en) * 2005-08-24 2011-01-12 シャープ株式会社 Repeater device

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