JPH03131133A - Radio communication equipment - Google Patents

Radio communication equipment

Info

Publication number
JPH03131133A
JPH03131133A JP1268046A JP26804689A JPH03131133A JP H03131133 A JPH03131133 A JP H03131133A JP 1268046 A JP1268046 A JP 1268046A JP 26804689 A JP26804689 A JP 26804689A JP H03131133 A JPH03131133 A JP H03131133A
Authority
JP
Japan
Prior art keywords
signal
mobile station
base station
transmission
emergency call
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
JP1268046A
Other languages
Japanese (ja)
Inventor
Takeo Suzuki
武夫 鈴木
Hiroaki Nakamura
中村　洋秋
Yoshihiro Hoshi
良弘 星
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 JP1268046A priority Critical patent/JPH03131133A/en
Publication of JPH03131133A publication Critical patent/JPH03131133A/en
Pending legal-status Critical Current

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  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To attain the reception of an emergency call sent from a mobile station with a base station without being affected with crosstalk and interference by generating a pulse signal for a prescribed time interval after the start of transmission of the mobile station and stopping the transmission of the mobile station for a prescribed time when no voice and signal input is detected. CONSTITUTION:An input detection circuit 7 detects whether or not a voice signal or a signal (c) is inputted and outputs a detection signal (d). The detection signal (d) is fed to a press-to-talk control circuit 8, from which a press-to-talk control circuit output signal (e) is outputted. After the lapse of a prescribed time, the press-to-talk control circuit output signal (e) goes to an L level and the operation of a transmission section 12 is interrupted. Thus, when a mobile station 71 sending an emergency call to a base station 10 exists for this period, the command console 60 of the base station in receives the emergency call without being affected by crosstalk and interference.

Description

【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は無線通信装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) TECHNICAL FIELD The present invention relates to wireless communication devices.

（従来の技術） 従来、基地局と複数の移動局との間で送受信を行う無線
通信装置であって、複数の移動局がら基地局への送信に
は同一の周波数が用いられる無線通信装置がある。(Prior Art) Conventionally, there has been a wireless communication device that performs transmission and reception between a base station and a plurality of mobile stations, in which the same frequency is used for transmission from the plurality of mobile stations to the base station. be.

この無線通信装置においては、複数の移動局のうちのあ
る移動局が基地局で通話中に他の移動局が緊急連絡のた
めに基地局に対して後から割り込んで緊急呼出しを行お
うとした場合、移動局から基地局への送信周波数が同一
のために、混信あるいは抑圧現象が起こり、後から割り
込んで緊急呼出しを行おうとした移動局の緊急呼出しが
基地局で容易に受信されないという問題があった。In this wireless communication device, when one mobile station among multiple mobile stations is talking at the base station, when another mobile station later interrupts the base station to make an emergency call and attempts to make an emergency call. Because the transmission frequency from the mobile station to the base station is the same, interference or suppression occurs, and there is a problem in that the base station cannot easily receive an emergency call from a mobile station that attempts to interrupt and make an emergency call later. Ta.

この問題に対処するために、複数の移動局側で一定間隔
で送信を停止させ、これにより混信、抑圧現象の影響を
なくして、この停止期間に緊急呼出しを行いたい移動局
と基地局との通話を容易に可能とするという方法も考え
られるが、一定間隔で送信を停止させるために、移動局
と基地局とが通話中の場合、通話音声が途切れるという
問題が生じた。In order to deal with this problem, multiple mobile stations stop transmission at regular intervals, thereby eliminating the effects of interference and suppression phenomena, and communicating between the mobile station and the base station that want to make an emergency call during this stop period. Although it is possible to easily make calls, the problem arises that the transmission is stopped at regular intervals, which causes the audio of the call to be interrupted when the mobile station and the base station are engaged in a call.

（発明が解決しようとする課題） 上述の如く、従来の無線通信装置では移動局が緊急連絡
のために、ある移動局とすでに通話中の基地局に対して
緊急呼出しを行おうとした場合、移動局から基地局への
送信周波数が同一のために、混信あるいは抑圧現象が起
こり、緊急呼出しを行おうとした移動局の緊急呼出しが
基地局で容易に受信されないという問題があった。(Problem to be Solved by the Invention) As described above, in conventional wireless communication devices, when a mobile station attempts to make an emergency call to a base station that is already in communication with a certain mobile station, the mobile station Since the transmission frequencies from each station to the base station are the same, interference or suppression occurs, and there is a problem in that the base station cannot easily receive an emergency call from a mobile station attempting to make an emergency call.

そこで、本発明はこの問題点に鑑みてなされたもので、
混信及び抑圧現象の影響を受けずに、移動局から送信さ
れる緊急呼出しを基地局で受信できる無線電話装置を提
供することを目的とする。Therefore, the present invention was made in view of this problem.
It is an object of the present invention to provide a radio telephone device that allows a base station to receive an emergency call transmitted from a mobile station without being affected by interference and suppression phenomena.

〔発明の構成〕[Structure of the invention]

（課題を解決するための手段） 基地局と複数の移動局との間で送受信を行う無線通信装
置であって、前記複数の移動局から前記基地局への送信
は、少なくとも同一の周波数が用いられる無線通信装置
において、前記移動局の送信開始後一定時間間隔でパル
ス信号を発生するパルス信号発生手段と、この移動局か
ら送信する音声または信号が入力されているか否かを検
出する入力検出手段と、前記パルス信号発生手段からパ
ルス信号が発生されたとき、前記入力検出手段により音
声または信号の人力が検出されていないことを条件にこ
の移動局の送信を一定時間停止させる送信停止手段とを
前記移動局に設けたことを特徴とする。(Means for Solving the Problem) A wireless communication device that performs transmission and reception between a base station and a plurality of mobile stations, wherein at least the same frequency is used for transmission from the plurality of mobile stations to the base station. A wireless communication device comprising: pulse signal generating means for generating a pulse signal at fixed time intervals after the mobile station starts transmitting; and input detecting means for detecting whether or not a voice or signal to be transmitted from the mobile station is input. and transmission stopping means for stopping transmission of the mobile station for a certain period of time when the pulse signal is generated by the pulse signal generating means, provided that no voice or signal is detected by the input detecting means. It is characterized in that it is provided in the mobile station.

（作用） 本発明の無線通信装置では、移動局の送信開始後一定時
間間隔てパルス信号を発生するパルス信号発生手段から
パルス信号が発生されたとき、人力検出手段により音声
または信号の人力が検出されていないことを条件に、前
記移動局の送信を一定時間停止させる。(Function) In the wireless communication device of the present invention, when a pulse signal is generated from the pulse signal generation means that generates a pulse signal at fixed time intervals after the mobile station starts transmitting, the human power detection means detects the human power of the voice or signal. On the condition that the mobile station is not in use, the transmission of the mobile station is stopped for a certain period of time.

（実施例） 以下、添付図面を参照して本発明の実施例について詳細
に説明する。(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

第１図に本発明の無線通信装置の一実施例のブロック図
を示す。FIG. 1 shows a block diagram of an embodiment of a wireless communication device of the present invention.

第１図において、１０は基地局、３ｏは基地局１０のア
ンテナ、６０は基地局３０に接続されている指令卓、７
０．７１は基地局１０と送受信を行う移動局であり、こ
の移動局７０．７１にはそれぞれアンテナ４０と無線機
５０が設けられている。In FIG. 1, 10 is a base station, 3o is an antenna of the base station 10, 60 is a command console connected to the base station 30, and 7
0.71 is a mobile station that performs transmission and reception with the base station 10, and these mobile stations 70 and 71 are each provided with an antenna 40 and a radio device 50.

また、移動局７０．７１から基地局１０への送信には同
一の周波数ｆ１が用いられている。Furthermore, the same frequency f1 is used for transmission from the mobile stations 70 and 71 to the base station 10.

第２図は移動局７０．７１の各無線機５０の詳細ブロッ
ク図である。FIG. 2 is a detailed block diagram of each radio device 50 of mobile station 70.71.

第３図は本発明の無線通信装置の一実施例に係る移動局
７０．７１の各無線機５０のタイミングチャートである
。FIG. 3 is a timing chart of each radio device 50 of a mobile station 70, 71 according to an embodiment of the radio communication device of the present invention.

以下、第１図、第２図、第３図を参照して本発明の無線
通信装置の構成及び動作について説明する。The configuration and operation of the wireless communication device of the present invention will be described below with reference to FIGS. 1, 2, and 3.

今、移動局７０が基地局１０と通信を行う際、第２図に
示す無線機５０で、最初にブレストークスイッチ９をオ
ンする。これにより生じたブレストーク信号ａはブレス
トーク制御回路８を動作させるとともに、パルス発生回
路１１を動作させ、第３図に示すようＴ１時時間−ベル
で１２時間（説明の便宜上、Ｔ　をＴ　　　、Ｔ　　　
としてい２　　２−１　　２−２ る）Ｌレベルのパルス発生回路出力信号すを発生させる
。一方、マイクロを介した音声信号又は信号発生器２３
から発生される信号Ｃは送信部１２に加わるとともに、
人力検出回路７に加わる。人力検出回路７は前記音声信
号または信号Ｃか人力されているか否かを検出し、第３
図に示すような検出信号ｄを出力する。この検出信号ｄ
はブレストーク制御回路８に加わり、これにより第３図
に示すタイミングでブレストーク制御回路８からブレス
トーク制御回路出力信号ｅが出力される。この出力信号
ｅは送信部１２に伝えられ、送信部１２の動作を制御す
る。この場合、第３図でパルス発生回路出力信号すにお
ける期間Ｔ　　では、検−１ 比信号ｄがＨレベルのため、ブレストーク制御回路出力
信号ｅはＡのようなＨレベルの状態となり、送信部１２
は動作を続ける。しかし、期間Ｔ２−２では検出信号ｄ
がＬレベルのためブレストーク制御回路出力信号ｅはＢ
のようなＬレベルの状態となり、期間Ｔ　　の間、送信
部１２の動作は断と−２ なる。これにより期間Ｔ　　の間、移動局７０の−２ 無線機５０の送信部１２から周波数ｆ１の高周波信号は
アンテナ共用器１４を介してアンテナ４０から送信され
ることはない。このため、この期間Ｔ　　の間に基゛他
局１０へ緊急呼出しを送信して−２ いる移動局７１があれば、この緊急呼出しを、基地局１
０はその指令卓６０で、混信あるいは抑圧現象による障
害を受けることなく受信できる。Now, when the mobile station 70 communicates with the base station 10, it first turns on the breath talk switch 9 in the radio device 50 shown in FIG. The breathtalk signal a generated thereby operates the breathtalk control circuit 8 and the pulse generation circuit 11, and as shown in FIG. T
2) Generates an L level pulse generation circuit output signal. On the other hand, the audio signal or signal generator 23 via the micro
The signal C generated from is applied to the transmitter 12, and
It is added to the human power detection circuit 7. The human power detection circuit 7 detects whether or not the audio signal or signal C is human-powered.
A detection signal d as shown in the figure is output. This detection signal d
is added to the breathtalk control circuit 8, whereby the breathtalk control circuit 8 outputs the breathtalk control circuit output signal e at the timing shown in FIG. This output signal e is transmitted to the transmitter 12 and controls the operation of the transmitter 12. In this case, in the period T of the output signal from the pulse generation circuit in FIG. 12
continues to operate. However, in period T2-2, the detection signal d
is L level, the breathtalk control circuit output signal e is B
During the period T, the operation of the transmitting section 12 is cut off at -2. As a result, during the period T, the high frequency signal of frequency f1 from the transmitter 12 of the -2 radio device 50 of the mobile station 70 is not transmitted from the antenna 40 via the antenna duplexer 14. Therefore, if there is a mobile station 71 that has transmitted an emergency call to another base station 10 during this period T, this emergency call is transmitted to the base station 10.
0 can be received by the command console 60 without interference due to interference or suppression phenomena.

この後、基地局１０は緊急呼出しのあった移動局７１と
確実に通話を行うことができる。この際、基地局１０か
らの音声信号は移動局７１のアンテナ４０、アンテナ共
用器１４を介して高周波信号として受信部１３で受信さ
れる。After this, the base station 10 can reliably communicate with the mobile station 71 that received the emergency call. At this time, the audio signal from the base station 10 is received by the receiving unit 13 as a high frequency signal via the antenna 40 of the mobile station 71 and the antenna duplexer 14.

また、本発明の無線通信装置によれば、入力検出回路７
にマイクロを介した音声信号Ｃが入力されたか否かを検
出するようにしているので、例えば移動局７０と基地局
１０とが通話中の場合、その音声が途切れるという問題
は生じない。Further, according to the wireless communication device of the present invention, the input detection circuit 7
Since it is detected whether or not the audio signal C is input via the micro, for example, when the mobile station 70 and the base station 10 are talking, the problem of the audio being interrupted does not occur.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明の無線システムでは、移動
局から送信される緊急呼出しを、混信及び抑圧現象の影
響を受けずに基地局で受信できる。As described above, in the wireless system of the present invention, an emergency call transmitted from a mobile station can be received by a base station without being affected by interference or suppression phenomena.

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

第１図は本発明の無線通信装置の一実施例のブロック図
、第２図は一実施例に係る移動局の無線機の詳細ブロッ
ク図、第３図は一実施例に係る移動局の無線機のタイミ
ングチャートである。 １０・・・基地局、３０・・・基地局１０のアンテナ、
４０・・・移動局７０．７１のアンテナ、５０・・・無
線機、６０・・・指令卓、７０．７１・・・移動局、６
・・・マイク、２３・・・信号発生器、７・・・入力検
出回路、８・・・ブレストーク制御回路、９・・・ブレ
ストークスイッチ、１１・・・パルス発生回路、１２・
・・送信部、１３・・・受信部、１４・・・アンテナ共
用器、ａ・・・ブレストーク信号、ｂ・・・パルス発生
回路出力信号、Ｃ・・・音声信号又は信号、ｄ・・・検
出信号、ｅ・・・ブレストーク制御回路出力信号。FIG. 1 is a block diagram of an embodiment of a wireless communication device of the present invention, FIG. 2 is a detailed block diagram of a mobile station radio according to an embodiment, and FIG. 3 is a detailed block diagram of a mobile station radio according to an embodiment. This is a timing chart of the machine. 10...Base station, 30...Antenna of base station 10,
40...Mobile station 70.71 antenna, 50...Radio device, 60...Command console, 70.71...Mobile station, 6
... Microphone, 23... Signal generator, 7... Input detection circuit, 8... Breathtalk control circuit, 9... Breathtalk switch, 11... Pulse generation circuit, 12.
... Transmission section, 13... Receiving section, 14... Antenna duplexer, a... Breathtalk signal, b... Pulse generation circuit output signal, C... Audio signal or signal, d... -Detection signal, e...Breathtalk control circuit output signal.

Claims (1)

【特許請求の範囲】 基地局と複数の移動局との間で送受信を行う無線通信装
置であって、前記複数の移動局から前記基地局への送信
は、少なくとも同一の周波数が用いられる無線通信装置
において、前記移動局の送信開始後一定時間間隔でパル
ス信号を発生するパルス信号発生手段と、 この移動局から送信する音声または信号が入力されてい
るか否かを検出する入力検出手段と、前記パルス信号発
生手段からパルス信号が発生されたとき、前記入力検出
手段により音声または信号の入力が検出されていないこ
とを条件にこの移動局の送信を一定時間停止させる送信
停止手段と を前記移動局に設けたことを特徴とする無線通信装置。[Scope of Claims] A wireless communication device that performs transmission and reception between a base station and a plurality of mobile stations, wherein the transmission from the plurality of mobile stations to the base station is wireless communication using at least the same frequency. In the apparatus, a pulse signal generating means generates a pulse signal at fixed time intervals after the mobile station starts transmitting, an input detecting means detects whether or not a voice or signal to be transmitted from the mobile station is input; a transmission stop means for stopping transmission of the mobile station for a certain period of time on the condition that no voice or signal input is detected by the input detection means when the pulse signal is generated from the pulse signal generation means; A wireless communication device characterized by being provided with.
JP1268046A 1989-10-17 1989-10-17 Radio communication equipment Pending JPH03131133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1268046A JPH03131133A (en) 1989-10-17 1989-10-17 Radio communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1268046A JPH03131133A (en) 1989-10-17 1989-10-17 Radio communication equipment

Publications (1)

Publication Number Publication Date
JPH03131133A true JPH03131133A (en) 1991-06-04

Family

ID=17453131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1268046A Pending JPH03131133A (en) 1989-10-17 1989-10-17 Radio communication equipment

Country Status (1)

Country Link
JP (1) JPH03131133A (en)

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