JPS6342449B2 - - Google Patents
Info
- Publication number
- JPS6342449B2 JPS6342449B2 JP58050375A JP5037583A JPS6342449B2 JP S6342449 B2 JPS6342449 B2 JP S6342449B2 JP 58050375 A JP58050375 A JP 58050375A JP 5037583 A JP5037583 A JP 5037583A JP S6342449 B2 JPS6342449 B2 JP S6342449B2
- Authority
- JP
- Japan
- Prior art keywords
- radio
- relay
- channel
- base station
- booster
- 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.)
- Expired
Links
- 238000001228 spectrum Methods 0.000 description 6
- 230000005684 electric field Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明は自動車電話サービスなどの移動無線通
信方式において、基地局と移動局との間に介在し
て、弱電界地域を救済する目的で用いられるブー
スタ無線中継装置に関するものである。Detailed Description of the Invention (Technical Field) The present invention relates to a booster radio interposed between a base station and a mobile station in a mobile radio communication system such as a car telephone service, and used for the purpose of relieving weak electric field areas. This relates to a relay device.
（背景技術）
従来のこの種の中継装置としては基地局から移
動局への回線（以下下り回線と呼ぶ）の電波の中
継およびブースタのサービスエリアに在圏する移
動局から基地局への回線（以下上り回線と呼ぶ）
の電波の中継をいずれも共通増幅器で行なうもの
が用いられていた。(Background Art) Conventional relay devices of this type are used to relay radio waves from base stations to mobile stations (hereinafter referred to as downlinks) and to relay radio waves from mobile stations located in the booster service area to base stations ( (hereinafter referred to as uplink)
A common amplifier was used to relay the radio waves.
この場合、周波数の異なる多数の電波を同時に
共通増幅器が増幅するために、増幅器の入出力非
線形に起因して相互変調歪が発生する問題があ
る。特に上り回線については、移動局がブースタ
のサービスエリア内を移動して電波を送出するた
め増幅器の入力信号レベルが下り回線のように一
定ではなく、移動局が中継装置に異常接近する際
などに極めて高い値になる場合がありレベルの高
い相互変調歪が発生し易い。また相互変調歪の影
響についても、一般にブースタのサービスエリア
がトンネル内等の比較的狭いエリアに限定されそ
のエリアで使用される無線チヤネル数が少ないの
に対し、親の基地局エリアで使用される無線チヤ
ネル数ははるかに多くなるのが通常であるから、
基地局エリアにて電波干渉を生ずる上り回線中継
器の歪についてより注意を払う必要がある。これ
らの理由により、ブースタ中継装置を構成する場
合、上り回線中継器として相互変調歪の発生の少
ない大出力増幅器を用いなければならない欠点が
あつた。 In this case, since a common amplifier simultaneously amplifies a large number of radio waves having different frequencies, there is a problem in that intermodulation distortion occurs due to input/output nonlinearity of the amplifier. In particular, for uplinks, the mobile station moves within the booster's service area and transmits radio waves, so the input signal level of the amplifier is not constant like in the downlink, and when the mobile station approaches a relay equipment abnormally, etc. The value may be extremely high, and high-level intermodulation distortion is likely to occur. Regarding the effects of intermodulation distortion, the booster's service area is generally limited to a relatively narrow area such as a tunnel, and the number of wireless channels used in that area is small, whereas the number of wireless channels used in the area of the parent base station is Since the number of wireless channels is usually much larger,
More attention needs to be paid to the distortion of uplink repeaters that causes radio wave interference in the base station area. For these reasons, when constructing a booster repeater, there is a drawback that a high-output amplifier with little generation of intermodulation distortion must be used as an uplink repeater.
（発明の課題）
本発明はこの欠点を解決するため、ブースタサ
ービスエリアに在圏する移動局の使用する無線チ
ヤネルを検出しその無線チヤネルについて個別の
中継を行なう選択個別中継器を上り回線中継器と
して用いたことを特徴とし、その目的は小出力増
幅器を使用して経済的に上り回線中継器を実現す
ることにある。(Problems to be Solved by the Invention) In order to solve this drawback, the present invention provides a selective individual repeater that detects a radio channel used by a mobile station located in a booster service area and performs individual relay for that radio channel. The purpose is to economically realize an uplink repeater using a small output amplifier.
（発明の構成および作用）
第１図は本発明の実施例であつて、１は対基地
局アンテナ、２は対移動局アンテナ、３，４は送
受アンテナ共用分波器、５は共通増幅器を用いた
下り回線中継器、６は選択個別増幅器を用いた上
り回線中継器、７は電界検出器、８は無線チヤネ
ル制御器である。第２図は選択個別増幅器の構成
例であつて９は入力端子、１０は出力端子、１１
は受信周波数変換器、１２はチヤネル帯域通過
波器、１３は送信周波数変換器、１４は増幅器、
１５は周波数可変の局部発振器である。第３図は
上り、下り回線電波のスペクトラム例であつて、
１６は下に回線電波、１７は上り回線電波であ
る。(Structure and operation of the invention) FIG. 1 shows an embodiment of the present invention, in which 1 is an antenna for a base station, 2 is an antenna for a mobile station, 3 and 4 are duplexers for transmitting and receiving antennas, and 5 is a common amplifier. 6 is an uplink repeater using a selective individual amplifier, 7 is an electric field detector, and 8 is a radio channel controller. FIG. 2 shows an example of the configuration of a selective individual amplifier, in which 9 is an input terminal, 10 is an output terminal, and 11
is a receiving frequency converter, 12 is a channel band pass waver, 13 is a transmitting frequency converter, 14 is an amplifier,
15 is a variable frequency local oscillator. Figure 3 shows an example of the spectrum of uplink and downlink radio waves.
16 is a lower line radio wave, and 17 is an uplink radio wave.
これの動作について説明すると以下のようにな
る。 The operation of this is explained as follows.
第１図において下り回線中継器５は共通増幅器
を用いた中継器であつて、対基地局アンテナ１で
受信された後分波器３で分波された下り回線信号
を無条件で増幅する。増幅された信号は分波器４
および対移動局向けアンテナ２を介してブースタ
のサービスエリアに向けて送出される。例えば、
第３図の１６の無線信号スペクトラム図に示され
るように、基地局より1，2，3，4の無線チヤ
ネル信号が送出されると、中継器５はこられの無
線チヤネル信号を無条件で増幅し、ブースタのサ
ービスエリアに向け送出する。 In FIG. 1, a downlink repeater 5 is a repeater using a common amplifier, and unconditionally amplifies the downlink signal received by the base station antenna 1 and demultiplexed by the demultiplexer 3. The amplified signal is sent to the demultiplexer 4
The signal is then transmitted to the booster's service area via the mobile station antenna 2. for example,
As shown in the 16 radio signal spectrum diagram in FIG . It is amplified and sent to the booster's service area.
一方、上り回線では電界検出器７は上り回線信
号を監視しあらかじめ設定された特定のレベル以
上の受信レベルで受信される無線チヤネル信号の
チヤネル周波数を検出する。このような機能は、
スペクトラムアナライザの如き掃引検出器を用い
て容易に実現できるもので、この機能により例え
ば第３図の上り回線電波１７のように周波数
4′の電波が立ち上がるとすぐさまそれが検知さ
れ、無線チヤネル制御器８にその周波数情報が伝
達される。ここで、選択個別増幅器６は例えば第
２図のような構成をとり、中間周波数通過帯域を
一定とし、送受周波数変換器１１，１３の局部搬
送波源１５の発振周波数を変化させることにより
中継チヤネルを任意の周波数に設定できるもので
ある。そこで、無線チヤネル制御器８はこの選択
個別増幅器６の中継チヤネルを周波数4′に設定
する。このようにして、周波数4′の上り回線が
接続される。下り回線は既に下り回線中継器５に
より接続されているから、この結果周波数4′を
使用する移動局と基地局との間にブースタ局を介
した上り、下り通話路が実現されることとなる。 On the other hand, on the uplink, the electric field detector 7 monitors the uplink signal and detects the channel frequency of a radio channel signal received at a reception level equal to or higher than a preset specific level. Such functionality is
This function can be easily realized using a sweep detector such as a spectrum analyzer.
As soon as the radio wave 4 ' rises, it is detected and its frequency information is transmitted to the wireless channel controller 8. Here, the selective individual amplifier 6 has a configuration as shown in FIG. 2, for example, and has a constant intermediate frequency passband, and changes the relay channel by changing the oscillation frequency of the local carrier wave source 15 of the transmitting/receiving frequency converters 11 and 13. It can be set to any frequency. Therefore, the radio channel controller 8 sets the relay channel of this selective individual amplifier 6 to frequency 4 '. In this way, the uplink of frequency 4 ' is connected. Since the downlink is already connected by the downlink repeater 5, as a result, an uplink and downlink communication path via the booster station is realized between the mobile station using frequency 4 ' and the base station. .
このように、本中継装置は移動局および基地局
に何ら影響を与えることなく無線チヤネルの中継
を行なうことができるから自動車電話等における
電波不感地対策用ブースタに応用できる。尚、以
上の説明は上り回線中継器が１つの場合について
行なつたが、２つ以上の中継器を用いる場合も同
様の動作が実現できる。又、第１図では電界検出
器７と選択個別増幅器６が独立した構成をとつて
いるが、選択個別増幅器６の構成回路である受信
周波数変換器１１を電界検出器７の受信周波数変
換器として共用することも可能である。 In this manner, the present relay device can relay wireless channels without affecting mobile stations and base stations, so it can be applied to boosters for countermeasures against radio wave dead zones in car phones and the like. Note that although the above explanation was given for the case where there is one uplink repeater, the same operation can be realized when two or more repeaters are used. Furthermore, although the electric field detector 7 and the selective individual amplifier 6 are configured independently in FIG. It is also possible to share them.
（発明の効果）
以上説明したように本発明による中継装置は、
上り回線について各無線チヤネル対応の中継器を
設定して電波の中継を行なうため相互変調歪の発
生することがなく、このために増幅器として特に
飽和出力の高いものを用いる必要がない利点があ
る。さらに、上り回線中継器は中継チヤネル周波
数を任意に設定できるため上り回線中継器の使用
効率は高く中継装置を経済的に構成できる利点が
ある。(Effects of the Invention) As explained above, the relay device according to the present invention has the following features:
Since radio waves are relayed by setting a repeater corresponding to each wireless channel for the uplink, intermodulation distortion does not occur, and therefore there is an advantage that there is no need to use an amplifier with particularly high saturation output. Furthermore, since the uplink repeater can arbitrarily set the relay channel frequency, the use efficiency of the uplink repeater is high and there is an advantage that the repeater can be constructed economically.
第１図は本発明装置の一実施例、第２図は選択
個別増幅器の構成例、第３図はａ及びｂは上り・
下り回線電波のスペクトラム例である。
１…対基地局アンテナ、２…対移動局アンテ
ナ、３，４…送受アンテナ共用分波器、５…下り
回線中継器、６…上り回線中継器、７…電界検出
器、８…無線チヤネル制御器、９…入力端子、１
０…出力端子、１１…受信周波数変換器、１２…
チヤネル帯域通過波器、１３…送信周波数変換
器、１４…増幅器、１５…局部発振器、１６…下
り回線信号スペクトラム例、１７…上り回線信号
スペクトラム例。
FIG. 1 shows an embodiment of the device of the present invention, FIG. 2 shows an example of the configuration of a selective individual amplifier, and FIG.
This is an example of the spectrum of downlink radio waves. 1... Antenna for base station, 2... Antenna for mobile station, 3, 4... Duplexer for transmitting and receiving antennas, 5... Downlink repeater, 6... Uplink repeater, 7... Electric field detector, 8... Radio channel control Device, 9...Input terminal, 1
0...Output terminal, 11...Reception frequency converter, 12...
Channel bandpass waver, 13... Transmission frequency converter, 14... Amplifier, 15... Local oscillator, 16... Downlink signal spectrum example, 17... Uplink signal spectrum example.
Claims (1)
る移動無線通信の基地局と該基地局のサービスエ
リア外に存在する移動局との通話を中継するブー
スタ無線中継装置において、基地局から送出され
る電波の中継に関しては、全チヤネルに共通な共
通増幅器を使用し無条件にすべての無線チヤネル
信号の中継を行ない、移動局から送出される電波
の中継に関しては、移動局から送出される電波を
傍受しその電波の無線チヤネルを特定する手段
と、特定された該無線チヤネルについてのみ個別
に中継チヤネルを設定できる選択個別中継器を使
用し、該ブースタ無線中継装置のサービスエリア
内に存在する移動局が送出する無線チヤネル信号
のみを個別に中継することを特徴とするブースタ
無線中継方式。1. In a booster radio relay device that relays calls between a base station for mobile radio communication set up between a base station and multiple mobile stations and a mobile station that exists outside the service area of the base station, When it comes to relaying radio waves sent from a mobile station, a common amplifier common to all channels is used to unconditionally relay all radio channel signals. A means for intercepting radio waves and specifying the radio channel of the radio waves, and a selective individual repeater that can individually set a relay channel only for the identified radio channel, A booster wireless relay system that is characterized by individually relaying only the wireless channel signals sent out by stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5037583A JPS59176934A (en) | 1983-03-28 | 1983-03-28 | Booster radio relay system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5037583A JPS59176934A (en) | 1983-03-28 | 1983-03-28 | Booster radio relay system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59176934A JPS59176934A (en) | 1984-10-06 |
| JPS6342449B2 true JPS6342449B2 (en) | 1988-08-23 |
Family
ID=12857130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5037583A Granted JPS59176934A (en) | 1983-03-28 | 1983-03-28 | Booster radio relay system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59176934A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147042A (en) * | 1979-05-04 | 1980-11-15 | Nippon Telegr & Teleph Corp <Ntt> | Radio relay system |
-
1983
- 1983-03-28 JP JP5037583A patent/JPS59176934A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147042A (en) * | 1979-05-04 | 1980-11-15 | Nippon Telegr & Teleph Corp <Ntt> | Radio relay system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59176934A (en) | 1984-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5809398A (en) | Channel selective repeater | |
| US4704733A (en) | Cell enhancer for cellular radio telephone system having diversity function | |
| CA1271526A (en) | Cell enhancer for cellular radio telephone system having bandpass filter arrangement | |
| US5515365A (en) | Method and apparatus for reducing interference in a time division duplex communication system | |
| US20190103910A1 (en) | Frequency Translating Bi-Directional Amplifier | |
| KR20010107015A (en) | Apparatus for transmitting/receiving radio signals in pico base station transceiver system | |
| WO2002071632A2 (en) | Improved channel booster amplifier | |
| US10879995B2 (en) | Feedback cancellation on multiband booster | |
| JP3742372B2 (en) | In-building wireless communication system and method for suppressing reverse link interference | |
| KR0144208B1 (en) | Repeater | |
| KR101956875B1 (en) | Relaying device for 5g network of dynamic tdd type considering line of sight | |
| KR100799679B1 (en) | Microwave repeater using frequency division duplexing and time division duplexing method | |
| KR20130078889A (en) | Emergency disaster communication system | |
| KR20060115945A (en) | Wireless repeater system using wireless link | |
| JPS6342449B2 (en) | ||
| KR100287751B1 (en) | CDMA mobile phone special area service system | |
| EP0692163B1 (en) | Radio repeater | |
| Baghai et al. | Cost effective solutions for coverage enhancement | |
| JP2981259B2 (en) | Same frequency radio repeater | |
| JP3095126B2 (en) | Mobile radio frequency selective repeater | |
| US10879996B2 (en) | Feedback cancellation on multiband booster | |
| EP1501216A1 (en) | Access method and umts repeater system with spectral exchange between umts wave frequencies | |
| JPH1070498A (en) | Frequency conversion repeater | |
| KR20030060612A (en) | Aparatus for processing IF with multi channel, and repeater with multi channel using its | |
| KR20020073878A (en) | A frequency translation repeater for wireless mobile data telecommunication |