JPS63179630A - Mobile radio system - Google Patents

Mobile radio system

Info

Publication number
JPS63179630A
JPS63179630A JP62010774A JP1077487A JPS63179630A JP S63179630 A JPS63179630 A JP S63179630A JP 62010774 A JP62010774 A JP 62010774A JP 1077487 A JP1077487 A JP 1077487A JP S63179630 A JPS63179630 A JP S63179630A
Authority
JP
Japan
Prior art keywords
base station
station
switch
mobile station
mobile
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
JP62010774A
Other languages
Japanese (ja)
Inventor
Junya Koyama
児山 淳弥
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62010774A priority Critical patent/JPS63179630A/en
Publication of JPS63179630A publication Critical patent/JPS63179630A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To continue communication between a control station and an operator by adding a tone signal generator designated by a base station to a mobile station and providing a function receiving and replying the said tone signal to the base station so as to start automatically the next base station. CONSTITUTION:A receiver 203 of a mobile station uses a changeover switch 204 to select and receive a reception frequency fa and a changeover control section 212 uses a switch 214 to switch a transmission tone signal into a signal Tb and the reception frequency is switched into a frequency fb by the switch 204 to be in standby. The sent radio wave is received by an adjacent base station 100, the tone signal detector 113 detects the signal Tb and uses a switch 103 to connect a communication line to a control station 10, a transmitter 104 is started and a signal is sent by a transmission frequency fb. Thus, a communication line between the mobile station 200 and the next base station 100 is established and the communication line is prolonged up to the control station 10 by the switch 103 to attain the communication between the mobile station and the control station.

Description

【発明の詳細な説明】 [産業上の利用分野〕 この発明は列車無線のように線状1こ移動する無線後と
地上固定局との移動無線方式rこ胸するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention concerns a mobile radio system between a radio station that moves in a linear manner, such as a train radio system, and a ground fixed station.

「従来の技術」 第2図は列車無線の地上指令所と基地局、移動無線機と
の間の関係を示す図であり、図において、  (10)
は指令所S  (2O)は指令所と基地局を結ぶ通イd
クープル、 (100)#L′i無線機をもつ基地局、
(101)は基地縁空中線、(200)は列車に積みこ
まれた移動局、 (201)はその空中線、(250)
は列車を示す。
"Prior Art" Figure 2 is a diagram showing the relationship between a train radio ground command center, base station, and mobile radio equipment.
is the command center S (2O) is the communication center connecting the command center and the base station.
Couple, (100) #Base station with L'i radio,
(101) is the base edge antenna, (200) is the mobile station loaded on the train, (201) is the antenna, (250)
indicates a train.

第6図は、従来の指令所と、移動機間の通信方式を示す
図である。凶において、 (11)は指令所の送受話器
、(lυ2)は基地局の送受話器、(103)は切換ス
イッチ、(104)は基地局送信機、(105)はその
送信同反故(fa)を決定する水晶発振器、(106)
は左中線共用器、(107)は基地局受信機、 (10
8)#−fその受信向技敗(f 1 )を決定する水晶
発振器、(109)は制御トーン値り発生器、(lto
)はそのON/a rp制御スイッチ、(ill)は信
ち検出器、(112)は無線機の切換制御部、(202
)け移動局の空中線共用器、(203)は移動局の受信
機、(204)ld移移動局受信8数、 (205)は
移動局受信周波数を決定する水晶発振器3ケ( fa%
fb.fo) 、(206)Hスピーカー回路on10
FF’制御スイッチ、(207)#−tスピーカー、(
208)Fi送受話器、(20り)は制御トーン信号発
生器, (210)けその0N10 FF制釧スイッチ
、(ztl)I/i信号検出器、(212)は無線振の
切換ル11仇部である。
FIG. 6 is a diagram showing a conventional communication system between a command center and a mobile device. (11) is the handset at the command center, (lυ2) is the handset at the base station, (103) is the changeover switch, (104) is the base station transmitter, and (105) is its transmission failure (fa). a crystal oscillator that determines (106)
is the left center line duplexer, (107) is the base station receiver, (10
8) #-f a crystal oscillator that determines its reception performance (f 1 ), (109) a control tone value generator, (lto
) is the ON/a rp control switch, (ill) is the signal detector, (112) is the radio switching control section, (202
) is the antenna duplexer of the mobile station, (203) is the receiver of the mobile station, (204) is the number of 8 ld mobile station receptions, and (205) is the 3 crystal oscillators (FA%) that determine the mobile station receiving frequency.
fb. fo), (206) H speaker circuit on10
FF' control switch, (207) #-t speaker, (
208) Fi handset, (20) is control tone signal generator, (210) Kesono 0N10 FF control switch, (ztl) I/i signal detector, (212) is wireless switching switch 11 part It is.

次に創作について説明する。第2図シこおいて指令所の
指−&貝は通信ケーブル及び基地局謀倫、移動局設備を
通して移gJ局の運転士を呼出し通話する。又運転士は
その逆ルートにより指令員を呼出して指令員と通話する
Next, I will explain about the creation. In FIG. 2, the command center's fingers and shells call and talk to the operator of the mobile GJ station through the communication cable, base station communication, and mobile station equipment. Also, the driver calls the dispatcher via the reverse route and speaks with the dispatcher.

基地局設備は、移動局と通信できる事eゴ勿論であるが
、本発明はこの機能に更に移動局と指令所が、基地局を
経由して直接通信でさるような機能を追加した方式に胸
するものである 第6図において指令所(10)の指−f)貝が運転士を
呼出す場合,指−@−員は、本図にζ示していないが、
別の制御回路により基地局(10o)の切換111飢都
(112)を制御し、切換スイッチ(103)を指令側
へ切換えると共に、制御トーン信号発生器(109)を
起動し、その出力制御スイッチ(110)をONとして
、送信41x(104)、共用器(106) 、空中線
(101)を通して、送信周波数faで送信する。切換
スイッチ(1(13)は基地局と移動局が通話する最に
は、基地局の送受話器(102)側へ接続される。移動
局では空中線(201)、共用器(202)、受信機(
203)を通し、水晶発振器らを切換スイッチ(204
)で選定して受信する。受信機(203)の復調出力は
信号検出器(211)でトーン信号発生器(109乃・
らの信りを検出し,切換制@部(212)へ入力する。
It goes without saying that base station equipment can communicate with mobile stations, but the present invention is based on a system that adds a function that allows mobile stations and a command center to communicate directly via a base station. In Figure 6, which is a matter of concern, when the command center (10)'s finger -f) shell calls the driver, the finger -@- member is not shown in this figure, but
Another control circuit controls the switching 111 and 112 of the base station (10o), switches the changeover switch (103) to the command side, starts the control tone signal generator (109), and switches its output control switch. (110) is turned on, and the signal is transmitted at the transmission frequency fa through the transmission 41x (104), the duplexer (106), and the antenna (101). When the base station and mobile station communicate, the changeover switch (1 (13)) is connected to the handset (102) side of the base station.In the mobile station, the antenna (201), duplexer (202), and receiver (
203), and a switch (204) to switch the crystal oscillator etc.
) to select and receive. The demodulated output of the receiver (203) is sent to the signal detector (211) and the tone signal generator (109).
Detects the confidence of these and inputs it to the switching system@ section (212).

切換制@J都(212)ではこれを受けて、スピーカ回
路(206)をONとし,スピーカーにつなぐ。この状
態で指令員から、スピーカーまで接続されるので、指令
員は音声で、運転士を呼出すと、それは、スピーカーか
ら放送される。呼び出されたと判断した運転士は送受話
器(208)を持ち上げ指令員に応答する。送受話器を
とり上げるとスピーカ回W!r(206)けOFFとな
り音声は送受話器(208)より聞こえる。
In response to this, the switching system @ J City (212) turns on the speaker circuit (206) and connects it to the speaker. In this state, the dispatcher is connected to the speaker, so when the dispatcher calls the driver by voice, the call is broadcast from the speaker. The driver who determines that he has been called picks up the handset (208) and answers the dispatcher. When you pick up the handset, it's on speaker W! r (206) is turned off and the voice can be heard from the handset (208).

又応答音声は送信機(203)より周波数f.の送信同
波数1こより共用器(202)、空中線(201)を経
由して送出される。基地局では空中線(lot)、共用
器(106)、受a機(1(17)でこれを受信復調し
、復調音声を切換スイッチ(103)を通して指令へ送
出する。送出された音声は、通信ケーブル(20)を通
し、指4?所(lO)へ入り指令員の送受話器(11)
へ戻ってくる。これで通話路が形成され、複信動作で通
話できる。
Also, the response voice is transmitted from the transmitter (203) at frequency f. It is transmitted from one transmission wave number via a duplexer (202) and an antenna (201). At the base station, the antenna (lot), duplexer (106), and receiver A1 (17) receive and demodulate this, and the demodulated voice is sent to the command via the changeover switch (103). Pass the cable (20) through the finger 4? place (lO) and connect the dispatcher's handset (11).
come back to. A communication path is now established and you can make calls using duplex operation.

基地局から呼出されたが自局でないと判断した運転士は
応答しなければ、数秒後に切換副側回路(212)から
スピーカー所信9を受け,スイッチ(206)をOFF
とする。一方運転士が指令員を呼出す時には運転士は、
制(filトーン信号発生器(209)を起動し、スイ
ッチ(210)をONとして送信機(203)、共用器
(202 )、空中線(201)を通して送信周波数f
.で送信する。この送信波は基地局において空中線(1
01)、共用器(106)、受信機(107)により受
信復調する。複調信jlFi、信号検出器(111)で
トーン信9発生器(209)からの信号を検出し切換制
御部(112)へ入力する。
If the driver who is called by the base station does not respond as he judges that it is not his own station, he will receive speaker message 9 from the switching sub-side circuit (212) after a few seconds and turn off the switch (206).
shall be. On the other hand, when the driver calls the dispatcher, the driver
Start the tone signal generator (209), turn on the switch (210), and transmit the transmission frequency f through the transmitter (203), duplexer (202), and antenna (201).
.. Send by. This transmitted wave is transmitted to the antenna (1
01), a duplexer (106), and a receiver (107) for reception and demodulation. The signal from the tone signal 9 generator (209) is detected by the signal detector (111) and inputted to the switching control section (112).

入力された信ちにより切換制御部(112)は切換スイ
ッチ(103)を指令接続側へ倒し,移動からの復調音
声を指令側へつなぐ。この音声は通信ケーブル(20)
を辿して指令所(10)の送受話器(11)νこより指
令員へ届くので指令員は音声で応答することになる。こ
れで運転士−指令間が複信通信できることになる。
In response to the input signal, the switching control section (112) turns the changeover switch (103) to the command connection side, and connects the demodulated audio from the movement to the command side. This audio is from the communication cable (20)
Since the message is traced to the dispatcher via the handset (11) ν of the dispatch center (10), the dispatcher responds by voice. This allows duplex communication between the driver and the command.

この通信においては、線状に配置された基地局で全線通
話可能なように回線設計されるが,基地局中筒では、2
基地局からの電波が到達し,同−周波数では干渉妨害を
生ずるので,一般?ζ基地局の送信同波数は3波( f
asfbm’c )が繰返し使用されている。従って、
移動局がある基地局から、次基地局ゾーンへ移った時、
移動局は受信周波数を切換える(例えはfa − f 
b )必要があると共−こ、次基地局設備を,指令所へ
接続して通話できるようにする必要がある。このため移
動局受信扱け、その受信レベルが規定値以下となったら
,切換制御器(212)により、受信周波数を切換スイ
ッチ(204)を切換えて次の周波数か受信されている
かを調べ。
In this communication, the line is designed so that calls can be made on all lines at base stations arranged in a line, but at the base station center
Radio waves from the base station arrive and cause interference on the same frequency, so is it normal? ζ The base station transmits the same number of waves as 3 waves ( f
asfbm'c) is used repeatedly. Therefore,
When a mobile station moves from one base station to the next base station zone,
The mobile station switches the reception frequency (for example, fa - f
b) If necessary, it is necessary to connect the base station equipment to the command center and make it possible to make calls. Therefore, when the mobile station can receive signals and the reception level falls below the specified value, the switching controller (212) switches the receiving frequency switch (204) to check whether the next frequency is being received.

受信されておればその周波数に固定し、なければ次の周
波数を調べるという動作を行なっている。
If it is received, it fixes to that frequency, and if it is not, it checks the next frequency.

又、通話を経由する基地局を変更するために運転士又は
指4?貝/−i最初の接続動作を再度iテなう必要があ
る。
Also, the driver or finger 4 to change the base station through which the call is made? Shell/-i It is necessary to repeat the initial connection operation.

[発明が解決しようとする問題点〕 従来の地上指令員と車上運転土間の通話は、以上のよう
に構成されているので通信中に列車がある基地局ゾーン
から、次の基地局ゾーンへ移った時1通話不能となるの
で、運転士又は指令員は次基地局経由で通話できるよう
な再設定を行なう必要があった。
[Problem to be solved by the invention] Conventional communication between the ground dispatcher and the on-board driver is structured as described above. When the base station was moved, one call became unavailable, so the driver or dispatcher had to reconfigure the settings so that calls could be made via the next base station.

この発明は上記のような問題点を解消するためになされ
たもので1列車がある基地局から、次基地局へ移っても
自動的に次の基地局を起動し指令−運転上聞の通話を継
続可能とすることを目的としている。
This invention was made to solve the above-mentioned problems, and even when a train moves from one base station to the next base station, the next base station is automatically activated and communication between commands and operation reports is carried out. The aim is to make it possible to continue.

c問題点を解決するための手段J この発明に係る移動通信方式は、移動局装置に基地局指
定のトーン信号発生器を付加するとともに、基地局側に
このトーン信号を受けて応答する機能を設けたものであ
る。
c. Means for Solving Problems J The mobile communication system according to the present invention adds a tone signal generator specified by the base station to the mobile station device, and also provides the base station with a function to receive and respond to this tone signal. It was established.

〔作用] この発F!−3における移動局装置は基地局指定のトー
ン信5発生器を設は基地局ゾーンを移る与にトーン信り
を切換えて送出するとともに、受信@波数も切換えて待
機し、この信ちを受けた基地局が移動局に応答するとと
も−こ、移動局と指骨所間の通話路を形成するようにし
たものである。
[Effect] This release F! The mobile station device in -3 is equipped with a tone signal 5 generator designated by the base station, and when moving from base station zone to another, switches the tone signal and sends it out, and also switches the reception @ wave number and stands by to receive this signal. When the base station responds to the mobile station, a communication path is established between the mobile station and the phalanx.

〔実施例〕〔Example〕

以下この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.

第1図において(213)は基地局指定トーン信ら発生
器(3種類)、(214’)tI′iこのうちの1種を
選択する選択スイッチ、 (113)は基地局の信号検
出器である。
In Fig. 1, (213) is a base station designated tone generator (3 types), (214') is a selection switch that selects one of these, and (113) is a base station signal detector. be.

この発明においては1例えばfarL送信の基地局ゾー
ンにおいて、移動局は送信波flに基地局指定トーン制
御信号発生器(213)の中から、選択スイッチ(21
4)により、Ta信号を選択し常時送出する。このトー
ン制飢信号は、wJ3図に示す様に音声帯域の帯域外に
設けられたものであり、基地局の送信周波数が3波(f
a、fb、fo)繰り返される方式の場合にはそれぞれ
その送信波に対応してTa、 Tb、 Tcの3種類を
用意する。移動局から送信された送信波は、基地局(1
00)で受信復調され復調借りからトーン信す悔出器(
113)で、トーン信53T、を検出する。
In the present invention, 1, for example, in a base station zone for farL transmission, a mobile station uses a selection switch (21
4), the Ta signal is selected and sent out at all times. This tone control signal is provided outside the voice band as shown in Figure wJ3, and the base station's transmission frequency is 3 waves (f
a, fb, fo) In the case of a repeating method, three types, Ta, Tb, and Tc, are prepared corresponding to the respective transmission waves. The transmission wave transmitted from the mobile station is transmitted to the base station (1
00) is received and demodulated and the tone is transmitted from the demodulated signal.
113), a tone signal 53T is detected.

トーン信りTaを検出した基地局は、 9J換ルリ(至
)部により、スイッチ回路(103)を切換え移動局か
らの通信回線を指令所(10)まで延長することができ
る。
The base station that detects the tone signal Ta can switch the switch circuit (103) using the 9J conversion unit and extend the communication line from the mobile station to the command center (10).

次にこの状態から、移動局が移動し−の基地局ゾーンか
ら、 fbの基地局ゾーンへ移行する場合について説明
する。移動局(200)の受信板(203)は受信量波
数を切換スイッチ(204)&こて、faを選択し受信
しているが、受信電界レベルを常時監視する。このレベ
ルが規定値以下となつ九ら、切換制御部(212)にて
、送信トーン信号をスイッチ(214)により、’I’
bに切換えて送出すると共に受信同波数をスイッチ(2
04)によりfbに切換えて待機する。すると、この送
信電波は隣の基地局(100)で受信され、そのトーン
信ち検出器(113)がちを検出できるようνこなって
おり、これを検出した基地局は、通信回線をスイッチ(
LO3)により、指令所(10)へ接続すると共に送信
機(L04)を起動し送信@彼攻f’1)で送信する。
Next, a case will be described in which the mobile station moves from this state to the fb base station zone from the - base station zone. The receiving plate (203) of the mobile station (200) selects the reception amount wave number with the switch (204) & fa, and constantly monitors the received electric field level. When this level becomes below the specified value, the switching control section (212) switches the transmission tone signal to 'I' by the switch (214).
At the same time, switch the receiving same wave number (2
04) to switch to fb and wait. Then, this transmitted radio wave is received by the neighboring base station (100), and its tone detector (113) is activated so that it can detect the difference, and the base station that detects this changes the communication line (
LO3) connects to the command center (10), activates the transmitter (L04), and sends a message using Send@Ko f'1).

移動局は受歯周波数fbで待機しており、これで移動局
(200)と、次の基地局(100)との間の通信回線
ができ上り、更にこのJ瓜信回1Mはスイッチ(103
)により指令所(10)まで延反され、移動局と指令所
との間の通話ができる。
The mobile station is on standby at the receiving frequency fb, and a communication line is now established between the mobile station (200) and the next base station (100).
) is extended to the command center (10), allowing communication between the mobile station and the command center.

一方今迄通話中に使ってい之基他局(fa送信波局)は
、移動局からのトーン制御信号(Ta)が受信できなく
なったのを検出し、スイッチ(103)の指令所との接
続を断とし送信& (104)の送信を断とするこに切
換え、受信周波式をfaからfbに切換えて、基地局か
らの送侶信りを待機することを説明したが、この次の基
地局がfbゾーンでなく、f0ゾーンの場合もありうる
。従って移動局は送出トーン信ち及受信8波数をTb、
fbに切換えて待機し、数秒間経っても基地局の応答が
ない場合には、それぞれ次のT。%foK切換えてみる
ことにより、先の説明と同様にして継続して通話するこ
とができる。
On the other hand, the other station (FA transmitting wave station) that has been used during the call detects that it is no longer able to receive the tone control signal (Ta) from the mobile station, and connects the switch (103) with the command center. I explained that the transmission is interrupted and the transmission of (104) is interrupted, the reception frequency type is changed from fa to fb, and the system waits for a sender signal from the base station. It is also possible that the station is not in the fb zone but in the f0 zone. Therefore, the mobile station sets the 8 wave numbers of transmitted and received tones as Tb,
Switch to fb and wait, and if there is no response from the base station after several seconds, switch to the next T. By switching to %foK, you can continue talking in the same way as described above.

本発明において基地局と移動局の通信方式については説
明を付加していないが、これば、移動局及び基地局の送
信機、受信機−こ、今迄説明したトーン信号発生器と、
信号検出器を付加する夢により勿論可能であるが、この
場合、移動局は、特定の基地局と通話するものであり、
指令所との通話のように基地局を順次切換える必要ばな
いので基地局指定用のトーン信号’l’al Tb、T
cを用いる必要はない0 なお、上記実施例でけ、基地局の尚反数繰返しを3彼の
場合について説明したが、こ7′Lは2改でも又4波で
も同じように構成することができる。この実施例を第4
図に示す。第4図で#′14tjiL繰返しの場合であ
り%3波では電波のオーバーリーチがある場合に有効で
ある。
In the present invention, no explanation is added regarding the communication system between the base station and the mobile station, but in this case, the transmitter and receiver of the mobile station and the base station, the tone signal generator described so far,
Of course, it is possible to add a signal detector, but in this case, the mobile station is communicating with a specific base station,
Since there is no need to switch base stations sequentially like when communicating with a command center, the tone signal 'l'al Tb, T for specifying the base station is used.
There is no need to use c. In the above embodiment, we have explained the case where the base station repeats the inverse number of 3 waves, but this 7'L can be configured in the same way for 2 waves or 4 waves. Can be done. This example is the fourth example.
As shown in the figure. FIG. 4 shows the case of #'14tjiL repetition, and is effective when there is overreach of radio waves at %3 waves.

又本天施例では基地局の送信機は通信時のみ送信するこ
とで説明したが、常時送信としてもかまわない。この実
施例として//′i第5図に示すようなものがあり、制
御トーン信り発生器(L(Jl)の出力は常時送出され
ること−こなる0 [発明の効果J 以上の様に、この発明によれば、移動局と基地局に切換
IIJ御信号の送出、検出機能を設けることにより、移
動局が移動しても、指令所との通話は自動的に基地局を
選んでm話を継続でき、通話途中で再接続といったわず
られしさをなくすことができる。
Furthermore, in the present embodiment, the transmitter of the base station is described as transmitting only during communication, but it is also possible to transmit constantly. An example of this is shown in FIG. 5, in which the output of the control tone generator (L(Jl) is always sent out. According to the present invention, by providing the mobile station and the base station with a switching IIJ control signal transmission and detection function, even if the mobile station moves, the base station is automatically selected for calls to the command center. It is possible to continue the conversation, and eliminate the hassle of having to reconnect in the middle of a call.

【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を示す方式説鴨図、第2図
は列車無線の地上指令所と基地局移1)無線機の関係を
示す系統図、第3図は木発男に使用する音声帯域内での
制御部ちと音声侶ちとの関係を示す図、第4図と第5図
は他の実施例を示す説明図、第6図は従来の方式説明図
である。 (lO)は指令所、(11)け送受あ器、(20)は通
信ケーブル、(100)は基地局、 (lot)Iri
訳中線、(103)は切換スイッチ、(104)#−を
送信後%(105)け水晶発振器、(106)は空中線
共用器、(107)は受信機、 (108)は水晶発振
器、(109)#:を副側トーン信号発生器、(110
)けON / OFY制供スイッチ、(Ill)け信9
模出器、 (112)Fi切換制#部、(200)は移
動局、(201)は空中線、(202)l″i空中線共
用器、(203)は受信機、 (204)はスイッチ、
(205)け水晶発振器、(206)#−i制御スイッ
チ、(209)け制御トーン佑ら発生器、(210)は
制御スイッチ、(211)は伯9検出器、(212)は
切換制御部である。 なお図中、同−符ちは同一、又は相当部分を示す。 代 理 人  大  岩   増  雄第4図 第5図
Figure 1 is a system diagram showing one embodiment of this invention, Figure 2 is a system diagram showing the relationship between the train radio ground control center and the base station station, and Figure 3 is a system diagram showing the relationship between the train radio ground control center and base station radio equipment. FIG. 4 and FIG. 5 are explanatory diagrams showing other embodiments, and FIG. 6 is an explanatory diagram of a conventional system. (lO) is the command center, (11) is the transmitter/receiver, (20) is the communication cable, (100) is the base station, (lot) Iri
(103) is the changeover switch, (104) after transmitting #-, (105) is the crystal oscillator, (106) is the antenna duplexer, (107) is the receiver, (108) is the crystal oscillator, ( 109) #: Secondary tone signal generator, (110
)KEON/OFY supply switch, (Ill)KEIN9
Modeler, (112) Fi switching system unit, (200) mobile station, (201) antenna, (202) l″i antenna duplexer, (203) receiver, (204) switch,
(205) Crystal oscillator, (206) #-i control switch, (209) Control tone generator, (210) Control switch, (211) Haku9 detector, (212) Switching control unit It is. Note that in the figures, the same numbers indicate the same or corresponding parts. Agent Masuo Oiwa Figure 4 Figure 5

Claims (1)

【特許請求の範囲】[Claims] 所定の距離を置いて線状に配置された基地局と、その基
地局間を結ぶケーブルを通して結ばれた指令所と、これ
ら基地局をむすぶ線状の区間を移動する移動局を備え、
これらの間で通信する移動無線方式において、前記移動
局は前記基地局の送信周波数に対応した基地局指定トー
ン信号を発生する装置を設け、このトーン信号と受信周
波数を前記基地局に対応して順次切換える一方、それを
受信した基地局はその受信基地局の通信回線を指令所ま
で接続すると共に、折り返しその基地局の送信機を動作
させるように構成し、移動局が基地局ゾーンを移り変わ
る毎に自動的に次の基地局を選択し、継続して指令所・
移動局間の通信ができるようにした移動無線方式。
It comprises base stations arranged in a line at a predetermined distance, a command center connected through a cable connecting the base stations, and a mobile station that moves in a linear section connecting these base stations,
In a mobile radio system for communicating between these, the mobile station is equipped with a device that generates a base station specified tone signal corresponding to the transmission frequency of the base station, and the mobile station transmits the tone signal and reception frequency corresponding to the base station. While switching sequentially, the base station that receives it connects the communication line of the receiving base station to the command center, and is configured to operate the transmitter of the base station in return, so that every time the mobile station changes base station zones, automatically selects the next base station and continues
A mobile radio system that allows communication between mobile stations.
JP62010774A 1987-01-20 1987-01-20 Mobile radio system Pending JPS63179630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62010774A JPS63179630A (en) 1987-01-20 1987-01-20 Mobile radio system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62010774A JPS63179630A (en) 1987-01-20 1987-01-20 Mobile radio system

Publications (1)

Publication Number Publication Date
JPS63179630A true JPS63179630A (en) 1988-07-23

Family

ID=11759676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62010774A Pending JPS63179630A (en) 1987-01-20 1987-01-20 Mobile radio system

Country Status (1)

Country Link
JP (1) JPS63179630A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0338117A (en) * 1989-07-04 1991-02-19 Mitsubishi Electric Corp Radio equipment
JP2019054645A (en) * 2017-09-15 2019-04-04 三菱電機株式会社 Train communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0338117A (en) * 1989-07-04 1991-02-19 Mitsubishi Electric Corp Radio equipment
JP2019054645A (en) * 2017-09-15 2019-04-04 三菱電機株式会社 Train communication system

Similar Documents

Publication Publication Date Title
JP3025712B2 (en) Cordless telephone communication between slave units
US5890069A (en) Cordless telephone micro-cellular system
JPH06506817A (en) How to choose an alternative wireless telephone system
JPS62225096A (en) Radiotelephony system
JPH0761029B2 (en) Transceiver
JPS6248133A (en) Radiotelephony system
JPH04360352A (en) Slave set transfer system for cordless telephone set
JPS63179630A (en) Mobile radio system
KR970006041B1 (en) Two handset cordless telephone system
WO2004075588A1 (en) Method and apparatus for controlling call control in mobile communication device
JP3842616B2 (en) Personal radio
JP2895051B1 (en) Group communication method and mobile station
JP3250916B2 (en) Double drive-through type wireless order device
JPH01171333A (en) Radio telephone set
JPS5850061B2 (en) communication facilities
JPS6339173B2 (en)
JPS614334A (en) Cordless telephone set
JPH0295056A (en) Cordless telephone set
JPH03204245A (en) Two-way voice ordering communication equipment
JPH0847050A (en) Cordless telephone set
JPH05244086A (en) Radio telephone system
JPS592412B2 (en) Communication device
JPS639239A (en) Cordless telephone set
JPH02244832A (en) Radio channel control system in mobile communication
JPH07312779A (en) Cordless telephone set