JPH01300720A - Communicating system for moving body - Google Patents

Communicating system for moving body

Info

Publication number
JPH01300720A
JPH01300720A JP13207688A JP13207688A JPH01300720A JP H01300720 A JPH01300720 A JP H01300720A JP 13207688 A JP13207688 A JP 13207688A JP 13207688 A JP13207688 A JP 13207688A JP H01300720 A JPH01300720 A JP H01300720A
Authority
JP
Japan
Prior art keywords
station
base station
data
moving
response
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
Application number
JP13207688A
Other languages
Japanese (ja)
Inventor
Tsutomu Inaba
稲葉　務
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP13207688A priority Critical patent/JPH01300720A/en
Publication of JPH01300720A publication Critical patent/JPH01300720A/en
Pending legal-status Critical Current

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  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To always make excellent communication between a base and moving stations by causing a repeater station to receive and store data from the base and moving stations and transmit the stored signals from the base or moving station upon receiving an outputting command from the base station. CONSTITUTION:The repeater station 2 receives data transmitted from the radio equipment 6 of the base station by means of its repeater-station radio equipment 7 and causes a storing section 9 to store the data through a control section 8. When the response from the moving station 3 cannot be received at the base station within a fixed time, a host computer 4 asks a control section 5 to resend the response. Upon receiving the resending request, the control section 8 transmits the data B stored in the storing section 9 to a control section 11 through the repeater-station radio equipment 7 and moving-station radio equipment 10. In addition, the repeater station 2 receives the response transmitted from the moving station 3 by means of the radio equipment 7 and stores the response in the storing section 8 through the control section 8. Then the repeater station 2 performs operations similar to the above-mentioned operations. Therefore, excellent communication which is free from same-channel interference can be performed always between a base station and moving station.

Description

【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） この発明は移動体通信システムに関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a mobile communication system.

（従来の技術） 移動体通信システムにおいては、不感地帯にいる移動局
をカバーするために中継局を設けたり、あるいは前進基
地局を設けて、基地局から移動局へデータを送信すると
同時に、中継局においても基地局からのデータを中継し
て不感地帯にいる移動局へ送信することが行われている
。(Prior Art) In a mobile communication system, a relay station is installed to cover mobile stations in a dead zone, or a forward base station is installed, and data is transmitted from the base station to the mobile station at the same time. At the mobile station, data from the base station is also relayed and transmitted to the mobile station located in the dead zone.

しかしながら、上述した従来の移動体通信システムでは
、基地局と移動局との間、あるいは中継局（または前進
基地局）と移動局との間の無線周波数は、同一の周波数
を使用することになり、基地局および中継局（または前
進基地局）からの受信入力レベルがほぼ等しい地域では
、移動局において同一チャネル干渉による不感地帯が形
成されてしまうという課題がある。However, in the conventional mobile communication system described above, the same radio frequency is used between a base station and a mobile station, or between a relay station (or forward base station) and a mobile station. In areas where the reception input levels from the base station and the relay station (or forward base station) are approximately equal, there is a problem in that a dead zone is formed due to co-channel interference in the mobile station.

（発明が解決しようとする課題） 上述したように従来の移動体通信システムでは、基地局
と中継局が、同一無線周波数で同時に送信するため、移
動局において、基地局と中継局からの受信人力レベルが
ほぼ等しい地域が不感地帯になるという課題があった。(Problems to be Solved by the Invention) As mentioned above, in conventional mobile communication systems, base stations and relay stations simultaneously transmit on the same radio frequency. There was a problem that areas with almost equal levels became dead zones.

この発明は上述した従来の課題を解決するためのもので
、常に良好な通信を行うことのできる移動体通信システ
ムを提供することを目的とする。This invention is intended to solve the above-mentioned conventional problems, and aims to provide a mobile communication system that can always perform good communication.

［発明の構成］ （課題を解決するための手段） この発明は、所定のデータの送信および受信を行う基地
局と、この基地局に対して無線回線を経てデータの送受
信を行う移動局と、前記基地局からのデータを受信して
記憶し、前記基地局から出力指令を受けたときに前記記
憶した基地局からのデータを送信するとともに、前記移
動局からの送信信号を受信して記憶し、前記基地局から
出力指令を受けたときに前記記憶した移動局からの信号
を送信する中継局とを備えたものである。[Structure of the Invention] (Means for Solving the Problems) The present invention comprises: a base station that transmits and receives predetermined data; a mobile station that transmits and receives data to and from the base station via a wireless line; Receives and stores data from the base station, transmits the stored data from the base station when receiving an output command from the base station, and receives and stores a transmission signal from the mobile station. , and a relay station that transmits the stored signal from the mobile station when receiving an output command from the base station.

（作　用） この発明では、中継局が、基地局からのデータを受信し
て記憶し、基地局から出力指令を受けたときに記憶した
基地局からのデータを送信するとともに、移動局からの
送信信号を受信して記憶し、基地局から出力指令を受け
たときに記憶した移動局からの信号を送信するので、常
に良好な通信を行うことができる。(Function) In this invention, the relay station receives and stores data from the base station, transmits the stored data from the base station when receiving an output command from the base station, and also transmits the stored data from the base station when receiving an output command from the base station. Since the mobile station receives and stores the transmitted signal and transmits the stored signal from the mobile station when receiving an output command from the base station, it is possible to always perform good communication.

（実施例） 以下、この発明の実施例を図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the drawings.

第１図はこの発明の一実施例の移動体通信システムの構
成を説明するための図である。FIG. 1 is a diagram for explaining the configuration of a mobile communication system according to an embodiment of the present invention.

同図に示すように、この移動体通信システムは、基地局
１、中継局２、移動局３から構成される。As shown in the figure, this mobile communication system is comprised of a base station 1, a relay station 2, and a mobile station 3.

上述した基地局１は、第２図に示すように、ホストコン
ピュータ４、制御部５、基地局無線機６からなる。The base station 1 described above includes a host computer 4, a control section 5, and a base station radio 6, as shown in FIG.

また、中継局２は、第３図に示すように、中継局無線機
７、制御部８、記憶部９からなる。Further, the relay station 2 includes a relay station radio 7, a control section 8, and a storage section 9, as shown in FIG.

また、移動局３は、第４図に示すように、移動局無線機
１０、制御部１１、データ端末装置１２からなる。Furthermore, the mobile station 3 includes a mobile station radio 10, a control section 11, and a data terminal device 12, as shown in FIG.

次に上述の移動体通信システムの動作を第５図のタイム
チャートを用いて説明する。Next, the operation of the above mobile communication system will be explained using the time chart of FIG.

同図に示すように、まず、基地局１のホストコンピュー
タ４から、移動局３のデータ端末装置１りにデータを伝
送する場合には、ホストコンピュ−タ４から送信された
データＡが、制御部５、基地局無線機６、移動局無線機
１０を通って制御部１１に送出される。制御部１１は受
信したデータＡが自局宛のデータである場合は、受信し
たデータをデータ端末装置１２に出力する。As shown in the figure, when data is first transmitted from the host computer 4 of the base station 1 to the data terminal device 1 of the mobile station 3, data A transmitted from the host computer 4 is transmitted to the data terminal device 1 of the mobile station 3. 5 , the base station radio 6 , and the mobile station radio 10 . If the received data A is addressed to the own station, the control unit 11 outputs the received data to the data terminal device 12.

また、中継局２においても、基地局無線機６から送信さ
れた上述のデータを中継局無線機７で受信して、制御部
８を介して記憶部９に記憶させる。Further, in the relay station 2 as well, the above-mentioned data transmitted from the base station radio 6 is received by the relay station radio 7 and stored in the storage section 9 via the control section 8.

そして基地局１からのデータＡを受信した移動局３は制
御部１１の制御により移動局無線機１０から応答Ａを送
信する。応答Ａは、移動局無線機１０から基地局無線機
６、制御部５に送られる。The mobile station 3 that has received the data A from the base station 1 transmits a response A from the mobile station radio 10 under the control of the control unit 11. Response A is sent from the mobile station radio 10 to the base station radio 6 and the control unit 5.

制御部５は、移動局３からの信号が応答Ａであれば、ホ
ストコンピュータ４に応答信号を送出する。If the signal from the mobile station 3 is response A, the control unit 5 sends a response signal to the host computer 4.

また、第５図のデータＢのように、移動局３からの応答
が、一定時間内に基地局で受信できなかった場合は、ホ
ストコンピュータ４が制御部５に対して、再送要求を出
す。制御部５は、ホストコンピュータ４から再送要求を
受信したら、基地局無線機６、中継局無線機７を通して
再送要求を制御部８へ送信する。制御部８は、再送要求
を受信したら、記憶部９に記憶したデータＢを中継局無
線機７、移動局無線機１０を介して制御部１１に送信す
る。Further, as shown in data B in FIG. 5, when the base station cannot receive a response from the mobile station 3 within a certain period of time, the host computer 4 issues a retransmission request to the control unit 5. Upon receiving the retransmission request from the host computer 4, the control section 5 transmits the retransmission request to the control section 8 through the base station radio 6 and the relay station radio 7. Upon receiving the retransmission request, the control unit 8 transmits the data B stored in the storage unit 9 to the control unit 11 via the relay station radio 7 and the mobile station radio 10.

データＢを受信した制御部１１は、データＢが自局宛て
のデータであれば、受信したデータをデータ端末装置１
２に送信する。またこれと同時に応答Ｂを移動局無線機
１０から基地局無線機６に送信し、制御部５に出力する
。The control unit 11 that has received the data B transfers the received data to the data terminal device 1 if the data B is data addressed to the own station.
Send to 2. At the same time, a response B is transmitted from the mobile station radio 10 to the base station radio 6 and output to the control section 5.

また中継局２も移動局３から送信された応答を中継局無
線機７で受信して制御部８を介して記憶部９に記憶させ
る。Further, the relay station 2 also receives the response transmitted from the mobile station 3 using the relay station radio 7 and stores it in the storage section 9 via the control section 8 .

制御部５は、移動局３からの信号が応答Ｂであれば、ホ
ストコンピュータ４に応答信号を送る。If the signal from the mobile station 3 is response B, the control unit 5 sends a response signal to the host computer 4.

さらに、第５図の応答Ｃのように移動局３からの応答を
再度一定時間内に基地局１において受信できなかった場
合は、ホストコンピュータ４が、制御部５に対して再送
要求を出す。制御部５は、ホストコンピュータ４からの
再送要求を受信すると、基地局無線機６から中継局無線
機７を介して、再送要求を制御部８に送信する。制御部
８は、再送要求を受信すると、移動局３からの応答Ｃを
受信していれば応答Ｃを、移動局無線機１０から基地局
無線機６を介して制御部５に送る。制御部５は受信した
信号が応答Ｃであればホストコンピュータ４に応答信号
を送る。一方、中継局２が移動局３からの応答Ｃを受信
していない場合は、データＣを移動局３に送信する。Furthermore, if the base station 1 is unable to receive a response from the mobile station 3 again within a certain period of time, as in response C in FIG. 5, the host computer 4 issues a retransmission request to the control unit 5. When the control unit 5 receives the retransmission request from the host computer 4 , it transmits the retransmission request from the base station radio 6 to the control unit 8 via the relay station radio 7 . Upon receiving the retransmission request, the control section 8 sends the response C from the mobile station radio 10 to the control section 5 via the base station radio 6 if it has received the response C from the mobile station 3 . If the received signal is response C, the control unit 5 sends a response signal to the host computer 4. On the other hand, if the relay station 2 has not received the response C from the mobile station 3, it transmits the data C to the mobile station 3.

したがって、この実施例では、上述した処理動作が行わ
れるので、同一チャネル干渉がなく、良好な通信を常時
、行うことができる。Therefore, in this embodiment, since the processing operations described above are performed, there is no co-channel interference and good communication can be performed at all times.

［発明の効果コ 以上説明したようにこの発明の移動体通信システムは、
中継局が、基地局からのデータを受信して記憶し、基地
局から出力指令を受けたときに記憶した基地局からのデ
ータを送信するとともに、移動局からの送信信号を受信
して記憶し、基地局から出力指令を受けたときに記憶し
た移動局からの信号を送信するので、常に良好な通信を
行うことができる。[Effects of the Invention As explained above, the mobile communication system of the present invention has
The relay station receives and stores data from the base station, transmits the stored data from the base station when receiving an output command from the base station, and also receives and stores transmission signals from the mobile station. Since the memorized signal from the mobile station is transmitted when receiving an output command from the base station, good communication can always be performed.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの発明の一実施例の移動体通信システムを説
明するための図、第２図は第１図の基地局を説明するた
めのブロック図、第３図は第１図の中継局を説明するた
めのブロック図、第４図は第１図の移動局を説明するた
めのブロック図、第５図は第１図の移動体通信システム
における処理動作を説明するためのタイムチャートであ
る。 １・・・基地局、２・・・中継局、３・・・移動局、４
・・・ホストコンピュータ、５．８．１１・・・制御部
、６・・・基地局無線機、７・・・中継局無線機、９・
・・記憶部、１０・・・移動局無線機、１２・・・デー
タ端末装置。 出願人　　　　　　株式会社　東芝 代理人　弁理士　　須　山　佐　− 第１図 〆１ 第２図 第３図 第４図 基地局　　　　　　　　中継局　　　　　　　　移動局
第５図FIG. 1 is a diagram for explaining a mobile communication system according to an embodiment of the present invention, FIG. 2 is a block diagram for explaining the base station in FIG. 1, and FIG. 3 is a diagram for explaining the relay station in FIG. 1. 4 is a block diagram for explaining the mobile station in FIG. 1, and FIG. 5 is a time chart for explaining processing operations in the mobile communication system in FIG. 1. . 1...Base station, 2...Relay station, 3...Mobile station, 4
... host computer, 5.8.11 ... control unit, 6 ... base station radio device, 7 ... relay station radio device, 9.
. . . Storage unit, 10 . . . Mobile station radio, 12 . . . Data terminal device. Applicant Toshiba Corporation Patent Attorney Satoshi Suyama - Figure 1 〆1 Figure 2 Figure 3 Figure 4 Base station Relay station Mobile station Figure 5

Claims (1)

【特許請求の範囲】[Claims] 所定のデータの送信および受信を行う基地局と、この基
地局に対して無線回線を経てデータの送受信を行う移動
局と、前記基地局からのデータを受信して記憶し、前記
基地局から出力指令を受けたときに前記記憶した基地局
からのデータを送信するとともに、前記移動局からの送
信信号を受信して記憶し、前記基地局から出力指令を受
けたときに前記記憶した移動局からの信号を送信する中
継局とを具備する移動体通信システム。A base station that transmits and receives predetermined data, a mobile station that transmits and receives data to and from this base station via a wireless line, and a mobile station that receives and stores data from the base station and outputs it from the base station. When a command is received, data from the stored base station is transmitted, and a transmission signal from the mobile station is received and stored, and when an output command is received from the base station, the data is transmitted from the stored mobile station. A mobile communication system comprising a relay station that transmits a signal.
JP13207688A 1988-05-30 1988-05-30 Communicating system for moving body Pending JPH01300720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13207688A JPH01300720A (en) 1988-05-30 1988-05-30 Communicating system for moving body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13207688A JPH01300720A (en) 1988-05-30 1988-05-30 Communicating system for moving body

Publications (1)

Publication Number Publication Date
JPH01300720A true JPH01300720A (en) 1989-12-05

Family

ID=15072949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13207688A Pending JPH01300720A (en) 1988-05-30 1988-05-30 Communicating system for moving body

Country Status (1)

Country Link
JP (1) JPH01300720A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003005758A1 (en) * 2001-07-03 2003-01-16 Matsushita Electric Industrial Co., Ltd. Radio communication system and radio communication method
JP2019175303A (en) * 2018-03-29 2019-10-10 三菱電機エンジニアリング株式会社 production management system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003005758A1 (en) * 2001-07-03 2003-01-16 Matsushita Electric Industrial Co., Ltd. Radio communication system and radio communication method
US7174128B2 (en) 2001-07-03 2007-02-06 Matsushita Electric Industrial Co., Ltd. Radio communication system and radio communication method
JP2019175303A (en) * 2018-03-29 2019-10-10 三菱電機エンジニアリング株式会社 production management system

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