JPH04207532A - Communication equipment - Google Patents
Communication equipmentInfo
- Publication number
- JPH04207532A JPH04207532A JP2335792A JP33579290A JPH04207532A JP H04207532 A JPH04207532 A JP H04207532A JP 2335792 A JP2335792 A JP 2335792A JP 33579290 A JP33579290 A JP 33579290A JP H04207532 A JPH04207532 A JP H04207532A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- signal
- base station
- master
- station
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 239000013307 optical fiber Substances 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 239000000284 extract Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ゾーン方式をとる移動通信方式において、経
済的かつ保守の容易な通信方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an economical and easy-to-maintain communication method in a zone-based mobile communication system.
自動車電話当移動通信方式では、サービス範囲を複数の
ゾーンに分け、一つのゾーンに親局を配し、子局（移動
局）と通信する所謂ゾーン方式が採用されている。The mobile communication system for car telephones employs a so-called zone system in which the service range is divided into a plurality of zones, and a master station is placed in one zone to communicate with slave stations (mobile stations).
周波数の有効利用を図り、出来るだけ多くの子局を収容
するためにはゾーンを小さくすることが有効である。こ
の場合、第４図に示すように、親局の数が著しく増大し
、親局設置及び基地局と親局との伝送回線の経費が増大
する。更に、親局では、基地局との通信用に変調装置、
復調装置、送受信装置等の伝送機器を設置しなければな
らなかった。これらの機器は比較的大型で親局の小型・
経済化を阻害していた。また、これらの機器が多くの親
局に分散されて設置されている為、保守が面倒であると
いう問題があった。また、従来は、呼の制御は各親局で
行われていた為、子局が他のゾーンに移動したときの切
替えが複雑という問題があった。In order to make effective use of frequencies and accommodate as many slave stations as possible, it is effective to make the zone small. In this case, as shown in FIG. 4, the number of master stations increases significantly, and the cost of installing the master stations and the transmission line between the base stations and the master stations increases. Furthermore, the master station includes a modulation device for communication with the base station,
Transmission equipment such as demodulators and transmitter/receiver equipment had to be installed. These devices are relatively large and the master station is small and
It was hindering economicization. Furthermore, since these devices are distributed and installed in many master stations, there is a problem in that maintenance is troublesome. Furthermore, in the past, call control was performed by each master station, which caused the problem that switching when a slave station moved to another zone was complicated.
本発明は、伝送線路を削減すると共に、親局に個別に設
けた伝送機器を基地局に集約して経済的な通信システム
化を実現するものである。The present invention realizes an economical communication system by reducing the number of transmission lines and consolidating transmission equipment individually provided in a master station into a base station.
本発明は、一つの基地局と複数の子局が複数の親局を介
して結ばれる無線通信用装置において、前記基地局には
、複数の親局で送信しようとする複数の信号を一つ又は
複数の出力に多重化する多重化装置と、該多重化装置の
出力を入力として光信号に変換する電気／光変換器を備
え、前記電気／光変換器の出力を前記親局に伝送する光
ファイバを有し、親局では、前記光ファイバ出力を入力
とし電気信号に変換する光／電気変換器と、該光／電気
変換器の出力を入力とし必要な信号のみを分離する多重
分離装置と、該多重分離装置の出力を入力とし電波を放
射する送信手段及び子局からの信号を受信する手段と、
受信信号を光信号に変換する電気／光変換器とを備え、
該電気／光変換器の出力を前記光ファイバによって前記
基地局に伝送するもので、以下詳細に説明する。The present invention provides a wireless communication device in which one base station and a plurality of slave stations are connected via a plurality of master stations. Alternatively, it includes a multiplexing device that multiplexes the output into a plurality of outputs, and an electrical/optical converter that converts the output of the multiplexing device into an optical signal as an input, and transmits the output of the electrical/optical converter to the master station. A master station includes an optical/electrical converter that receives the optical fiber output and converts it into an electrical signal, and a demultiplexer that receives the output of the optical/electrical converter and separates only necessary signals. and a transmitting means for receiving the output of the demultiplexing device and emitting radio waves, and a means for receiving a signal from a slave station;
Equipped with an electrical/optical converter that converts the received signal into an optical signal,
The output of the electrical/optical converter is transmitted to the base station via the optical fiber, and will be described in detail below.
［作用〕
本発明は、親局から送信される信号である多重化された
変調波を一つの基地局で作成し、変調波を光信号に変換
し、光ファイバを用いて複数の親局に分配すると共に親
局では光信号を電気信号に変換し必要な信号のみを抽出
し子局に向けて送信するもので、基地局と親局を結ぶ伝
送路を削減出来るとともに、従来親局で行っていた機能
を基地局に集約できるという特有の効果を有するもので
ある。[Operation] The present invention creates a multiplexed modulated wave, which is a signal transmitted from a master station, at one base station, converts the modulated wave into an optical signal, and transmits it to multiple master stations using an optical fiber. At the same time, the master station converts the optical signal into an electrical signal, extracts only the necessary signals, and sends them to the slave stations.This reduces the number of transmission lines connecting the base station and the master station, and also reduces the number of transmission lines that were previously required at the master station. This has the unique effect of consolidating the functions previously used in the base station into the base station.
第１図は、本発明の詳細な説明する図である。 FIG. 1 is a diagram illustrating the present invention in detail.
４は基地局、５ａ、５ｂ、、、、は、それぞれ子局であ
る。ｌａ、ｌｂ、、、は、基地局から伝送しようとする
信号の束を示し、ｌａは親局５ａに対する信号群である
。これらの多数の信号は交換機２１を経た後、基地局内
で変調器２４で変調され、それらの変調波は多重化袋Ｗ
３で多重化される。4 is a base station, and 5a, 5b, . . . are slave stations, respectively. la, lb, . . . indicate a bundle of signals to be transmitted from the base station, and la is a signal group for the master station 5a. After passing through the exchange 21, these many signals are modulated by a modulator 24 within the base station, and these modulated waves are sent to the multiplexing bag W.
3 multiplexed.
多重化の方法として周波数多重、時分割多重等の周知技
術が使用出来る。多重化された信号は電気／光変換器６
に入力され、多重化信号を変調波、光を搬送波とする線
型変調が行われる。変換された信号は光ファイバ９によ
り伝送される。各親局は、光ファイバの光信号を分岐し
、光／電気変換器１２によって基地局での変調信号に戻
される。Known techniques such as frequency multiplexing and time division multiplexing can be used as a multiplexing method. The multiplexed signal is sent to an electrical/optical converter 6.
linear modulation is performed using the multiplexed signal as a modulation wave and the light as a carrier wave. The converted signal is transmitted through optical fiber 9. Each master station branches the optical signal of the optical fiber and returns it to a modulated signal at the base station by an optical/electrical converter 12.
各親局は変換された信号の内自局に関するものを多重／
多重分離装置１１によって抽出し、これらの信号は子局
に無線で送信される。Each master station multiplexes/multiples the converted signals related to its own station.
Extracted by the demultiplexer 11, these signals are transmitted wirelessly to the slave station.
子局からの信号は、多重／多重分離装置１１でゾーン内
信号をまとめた後、電気／光変換器１２によって光信号
に変換後、光ファイバ９によって基地局４に伝送される
。各親局からの信号は光ファイバ中に合成される。基地
局４では、光／電気変換器７によって電気信号に変換後
多重分離装置８によって各信号が分離される。多重分離
された信号は復調を行った後に必要に応して交換機２３
で切り換えられる。即ち、全ての子局の回線切替え・変
復調は基地局で集中して行える。Signals from the slave stations are combined into zone signals by a multiplex/demultiplexer 11, converted into optical signals by an electrical/optical converter 12, and then transmitted to the base station 4 via an optical fiber 9. Signals from each master station are combined into an optical fiber. At the base station 4, the optical/electrical converter 7 converts the signals into electrical signals, and the demultiplexer 8 separates each signal. The demultiplexed signal is demodulated and then sent to the exchange 23 as necessary.
You can switch with . That is, line switching and modulation/demodulation of all slave stations can be performed centrally at the base station.
第２図は多重方式として周波数多重を用いた場合の構成
図である。３１〜Ｓｎは基地局で変調された入力信号、
Ｓｌ’〜Ｓｎ″は出力信号である。FIG. 2 is a configuration diagram when frequency multiplexing is used as the multiplexing method. 31 to Sn are input signals modulated by the base station,
Sl' to Sn'' are output signals.
基地局側ではその基地局内で送信するｎ個の信号を時分
割多重装置３−１で多重化し、電気／光変換して光ファ
イバ９で伝送する。親局では光／電気変換した後にその
親局で送信する信号を抽出する時分割多重信号分離装置
１１で分離し、電力増幅し、空中線で送信する。受信信
号は空中線１０で受信し、時分割多重を行った後に光フ
ァイバ９で基地局へ伝送し、時分割多重分離装置で信号
を分離し伝送する。On the base station side, n signals to be transmitted within the base station are multiplexed by a time division multiplexer 3-1, subjected to electrical/optical conversion, and transmitted through an optical fiber 9. At the master station, after optical/electrical conversion, the signal to be transmitted at the master station is separated by a time division multiplex signal demultiplexing device 11, power amplified, and transmitted via an antenna. The received signal is received by an antenna 10, subjected to time division multiplexing, and then transmitted to a base station via an optical fiber 9. The signal is separated and transmitted by a time division multiplexing/demultiplexing device.
第３図は、多重化の手段として周波数多重を用いた場合
の構成図である。基地局側では、その基地局内で送信す
るｎ個の信号（ｆｌ〜ｆｎ）をハイブリッド２３で合成
し、電気／光変換後、光ファイバ９で伝送する。親局で
は光／電気変換した後に電力増幅じ、空中線】０で送信
する。受信信号は空中線１０で受信し、時分割多重を行
った後に光ファイバで基地局へ伝送し、周波数分割スイ
ッチで切り換えて伝送する。FIG. 3 is a configuration diagram when frequency multiplexing is used as a means of multiplexing. On the base station side, n signals (fl to fn) to be transmitted within the base station are combined by a hybrid 23 and transmitted through an optical fiber 9 after electrical/optical conversion. The master station performs optical/electrical conversion, amplifies the power, and transmits the signal over the antenna. The received signal is received by an antenna 10, subjected to time division multiplexing, and then transmitted to a base station via an optical fiber, switched by a frequency division switch, and transmitted.
以上説明したように、本発明によれば、基地局から遠隔
地の親局へ高周波信号を供給できるので親局を小型・簡
易化出来、親局より放射する電波の切替えも容易にでき
、基地局の光／電気変換器が節減できる。親局の保守も
簡易になる。また、光ファイバの敷設方法に対する制約
が無くなる。As explained above, according to the present invention, a high frequency signal can be supplied from a base station to a remote master station, so the master station can be made smaller and simpler, and the radio waves emitted from the master station can be easily switched. The cost of optical/electrical converters at the station can be saved. Maintenance of the master station also becomes easier. Furthermore, there are no restrictions on the method of installing optical fibers.
第１図は、本発明の詳細な説明する図である。
第２図は、多重方式として周波数多重を用いた場合の本
発明の構成図である。
第３図は、多重方式として時分割多重を用いた場合の本
発明の構成図である。
第４図は、従来の構成を示す図である。
１ａ〜１０−基地局からの信号
３−多重化装置、
３−１ 時分割多重化装置
４−基地局。
５ａ〜５Ｃ−親局
６−電気／光変換器。
７−光／電気変換器１
８−多重分離装置。
８−１−・−時分割多重分離装置。
９−光ファイバ。
１〇−空中線。
１１−多重／多重分離装置。
１２−・−光／電気変換器・電気／光変換器１２−ｔ−
−−光／電気変換器。
１２−２−電気／光変換器。
１４・−・電力増幅器。
１５・−送信／受信分波器。
１６−周波数分割スイッチ。
１７−選択器１
２１、２２−・交換機。
２３− ハイブリッド。
２４−変調器。
２５−復調器。FIG. 1 is a diagram illustrating the present invention in detail. FIG. 2 is a block diagram of the present invention when frequency multiplexing is used as the multiplexing method. FIG. 3 is a block diagram of the present invention when time division multiplexing is used as the multiplexing method. FIG. 4 is a diagram showing a conventional configuration. 1a to 10 - signals from base stations 3 - multiplexer, 3-1 time division multiplexer 4 - base station. 5a to 5C - Master station 6 - Electrical/optical converter. 7-Optical/Electrical Converter 1 8-Demultiplexer. 8-1--Time division multiplexing/demultiplexing device. 9-Optical fiber. 10-Aerial line. 11-Mux/Demultiplexer. 12-・- Optical/electrical converter/electrical/optical converter 12-t-
--Optical/electrical converter. 12-2-Electrical/optical converter. 14.--Power amplifier. 15.--Transmission/reception duplexer. 16-Frequency division switch. 17-Selector 1 21, 22--Switching machine. 23- Hybrid. 24-Modulator. 25-Demodulator.
Claims (1)
る無線通信用装置において、前記基地局には、複数の親
局で送信しようとする複数の信号を一つ又は複数の出力
に多重化する多重化装置と、該多重化装置の出力を入力
として光信号に変換する電気／光変換器を備え、前記電
気／光変換器の出力を前記親局に伝送する光ファイバを
有し、親局では、前記光ファイバ出力を入力とし電気信
号に変換する光／電気変換器と、該光／電気変換器の出
力を入力とし必要な信号のみを分離する多重分離装置と
、該多重分離装置の出力を入力とし電波を放射する送信
手段及び子局からの信号を受信する手段と、受信信号を
光信号に変換する電気／光変換器とを備え、該電気／光
変換器の出力を前記光ファイバによって前記基地局に伝
送することを特徴とする通信装置。In a wireless communication device in which one base station and a plurality of slave stations are connected via a plurality of master stations, the base station has one or more outputs for transmitting a plurality of signals to be transmitted by the plurality of master stations. a multiplexing device for multiplexing the multiplexing device; an electrical/optical converter for inputting the output of the multiplexing device and converting it into an optical signal; and an optical fiber for transmitting the output of the electrical/optical converter to the master station. The master station includes an optical/electrical converter that takes the optical fiber output as input and converts it into an electrical signal, a demultiplexer that takes the output of the optical/electrical converter as input and separates only the necessary signals, and the multiplexer. comprising a transmitting means for receiving the output of the separation device and emitting radio waves, a means for receiving a signal from a slave station, and an electric/optical converter for converting the received signal into an optical signal, and an output of the electric/optical converter. A communication device, characterized in that the information is transmitted to the base station via the optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2335792A JPH04207532A (en) | 1990-11-30 | 1990-11-30 | Communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2335792A JPH04207532A (en) | 1990-11-30 | 1990-11-30 | Communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04207532A true JPH04207532A (en) | 1992-07-29 |
Family
ID=18292487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2335792A Pending JPH04207532A (en) | 1990-11-30 | 1990-11-30 | Communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04207532A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6909893B2 (en) | 2000-03-15 | 2005-06-21 | Denso Corporation | Wireless communication system, fixed base station and mobile terminal station |
| JP2006191694A (en) * | 2006-03-29 | 2006-07-20 | Fujitsu Ltd | Base station transmitting and receiving device |
| JP2010074719A (en) * | 2008-09-22 | 2010-04-02 | Hitachi Kokusai Electric Inc | Optical transmission apparatus |
| JP2017011747A (en) * | 2010-08-17 | 2017-01-12 | ダリ システムズ カンパニー リミテッド | Daisy-chained ring of remote units for distributed antenna system |
| US9820171B2 (en) | 2010-09-14 | 2017-11-14 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US10080178B2 (en) | 2006-12-26 | 2018-09-18 | Dali Wireless, Inc. | Distributed antenna system |
| US11159129B2 (en) | 2002-05-01 | 2021-10-26 | Dali Wireless, Inc. | Power amplifier time-delay invariant predistortion methods and apparatus |
| US11297603B2 (en) | 2010-08-17 | 2022-04-05 | Dali Wireless, Inc. | Neutral host architecture for a distributed antenna system |
| US11418155B2 (en) | 2002-05-01 | 2022-08-16 | Dali Wireless, Inc. | Digital hybrid mode power amplifier system |
-
1990
- 1990-11-30 JP JP2335792A patent/JPH04207532A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6909893B2 (en) | 2000-03-15 | 2005-06-21 | Denso Corporation | Wireless communication system, fixed base station and mobile terminal station |
| US11159129B2 (en) | 2002-05-01 | 2021-10-26 | Dali Wireless, Inc. | Power amplifier time-delay invariant predistortion methods and apparatus |
| US11418155B2 (en) | 2002-05-01 | 2022-08-16 | Dali Wireless, Inc. | Digital hybrid mode power amplifier system |
| JP2006191694A (en) * | 2006-03-29 | 2006-07-20 | Fujitsu Ltd | Base station transmitting and receiving device |
| US10080178B2 (en) | 2006-12-26 | 2018-09-18 | Dali Wireless, Inc. | Distributed antenna system |
| US11818642B2 (en) | 2006-12-26 | 2023-11-14 | Dali Wireless, Inc. | Distributed antenna system |
| US10334499B2 (en) | 2006-12-26 | 2019-06-25 | Dali Wireless, Inc. | Distributed antenna system |
| US11006343B2 (en) | 2006-12-26 | 2021-05-11 | Dali Wireless, Inc. | Distributed antenna system |
| JP2010074719A (en) * | 2008-09-22 | 2010-04-02 | Hitachi Kokusai Electric Inc | Optical transmission apparatus |
| JP2017011747A (en) * | 2010-08-17 | 2017-01-12 | ダリ システムズ カンパニー リミテッド | Daisy-chained ring of remote units for distributed antenna system |
| US11297603B2 (en) | 2010-08-17 | 2022-04-05 | Dali Wireless, Inc. | Neutral host architecture for a distributed antenna system |
| US9820171B2 (en) | 2010-09-14 | 2017-11-14 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US11013005B2 (en) | 2010-09-14 | 2021-05-18 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US10743317B1 (en) | 2010-09-14 | 2020-08-11 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US11368957B2 (en) | 2010-09-14 | 2022-06-21 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US10701695B2 (en) | 2010-09-14 | 2020-06-30 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US20220295487A1 (en) | 2010-09-14 | 2022-09-15 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US11805504B2 (en) | 2010-09-14 | 2023-10-31 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
| US10159074B2 (en) | 2010-09-14 | 2018-12-18 | Dali Wireless, Inc. | Remotely reconfigurable distributed antenna system and methods |
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