JPH1075194A - Radio communication equipment - Google Patents
Radio communication equipmentInfo
- Publication number
- JPH1075194A JPH1075194A JP8246837A JP24683796A JPH1075194A JP H1075194 A JPH1075194 A JP H1075194A JP 8246837 A JP8246837 A JP 8246837A JP 24683796 A JP24683796 A JP 24683796A JP H1075194 A JPH1075194 A JP H1075194A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- signal
- switching
- communication
- dtmf
- 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.)
- Granted
Links
Landscapes
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】無線通信機の交信中に、必要
に応じてチャネルを相手局と同時に切換えるチャネル制
御に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to channel control for switching a channel simultaneously with a partner station as required during communication of a radio communication device.
【0002】[0002]
【従来の技術】複数のチャネルから選択したチャネルに
より相手局と交信している時、混信状態になって通信の
続行が出来なくなった場合に、別のチャネルに移行しな
ければならないが、そのためには一旦通信を保留し、別
の空きチャネルを探し、再度混信のある交信中のチャネ
ルに戻り、交信相手局に切り換えるチャネルを伝達しな
ければならず、混信がひどい場合は相手局が理解できな
い場合もあり、また、相手局からなんの応答もなければ
お互いの局が混信を回避できない状態が続くことにな
る。2. Description of the Related Art When communicating with a partner station through a channel selected from a plurality of channels, if a communication condition cannot be continued due to interference, it is necessary to shift to another channel. Must suspend communication, search for another free channel, return to the communicating channel with interference again, and communicate the channel to be switched to the communicating partner station.If the interference is severe, the partner station can not understand There is also a situation where each station cannot avoid interference if there is no response from the partner station.
【0003】基地局と移動局との間で交信する制御チャ
ネルでチャネルを割り当てるMCA通信方式などの場合
は、その基地局のサービスエリア内で移動局移動し、移
動局が信号対雑音比を測定して測定値が劣化すると引き
続き交信要求を出すと他の基地局で感度の良い基地局が
応答信号を出してその基地局が指定したチャネルで交信
が続行される。In the case of an MCA communication system in which a channel is allocated using a control channel for communication between a base station and a mobile station, the mobile station moves within a service area of the base station, and the mobile station measures a signal-to-noise ratio. If the measured value deteriorates and a communication request is subsequently issued, a base station having high sensitivity at another base station issues a response signal, and communication is continued on a channel designated by the base station.
【0004】[0004]
【発明が解決しようとする課題】送受信が同一周波数で
交信している場合に、混信が激しくなって思うような通
信ができなくなり、交信しているチャネル周波数を変更
したくても思うように交信相手局との連絡がつかない事
がある。本発明はこのような異常な交信状態を速やかに
離脱するチャネル変更を可能にする無線通信機の提供を
目的とする。When the transmission and reception are performed at the same frequency, the communication becomes intense and the desired communication cannot be performed. Contact with the partner station may not be possible. An object of the present invention is to provide a wireless communication device that enables a channel change that quickly leaves such an abnormal communication state.
【0005】[0005]
【課題を解決するための手段】交信中のチャネルで不要
電波により交信不能となって他の空きチャネルに切換え
る無線通信機において、空きチャネルを検索して、検出
した空きチャネルに切換制御信号を付してチャネル切換
信号を作成する手段と、交信中のチャネルの不要電波の
レベルが降下して交信可能なレベルを検出する交信状態
検出手段と、交信状態検出手段の検出信号で前記チャネ
ル切換信号を送信する手段と、交信の相手局が前記チャ
ネル切換信号を受信検出すると切換了解信号を送信して
チャネル切換信号で指定されたチャネルに切換わるチャ
ネル切換手段と、チャネル切換信号を送信して待ち受け
状態の時、前記切換了解信号を受信検出するとチャネル
切換信号で指定したチャネルに切換わる手段とを具備し
た無線通信機である。SUMMARY OF THE INVENTION In a wireless communication device which is unable to communicate due to unnecessary radio waves in a channel being communicated and switches to another empty channel, it searches for an empty channel and attaches a switching control signal to the detected empty channel. Means for generating a channel switching signal, a communication state detecting means for detecting a communicable level by lowering the level of unnecessary radio waves of the channel under communication, and a communication state detecting means for detecting the channel switching signal by the detection signal of the communication state detecting means. Means for transmitting, a channel switching means for transmitting a switching acknowledge signal when a partner station of communication detects the reception of the channel switching signal and switching to a channel specified by the channel switching signal, and a standby state for transmitting the channel switching signal Means for switching to a channel specified by a channel switching signal upon detection of reception of the switching acknowledge signal. .
【0006】[0006]
【発明の実施の形態】図1は本発明の一実施例を示す無
線通信機のブロック図であり、図1について説明する。
図中1はアンテナ、2は送信部、3は受信部、4は制御
部、5はメモリで、6はモード切換や送受信用の必要な
少数のスイッチ類と、数字の組み合わせやメモリ5に記
憶してあるデータを読み出して各種の設定をするキーボ
ードとからなる操作部、7はDTMFジェネレータ、8
はDTMFレシーバである。FIG. 1 is a block diagram of a wireless communication apparatus according to an embodiment of the present invention, and FIG. 1 will be described.
In the figure, 1 is an antenna, 2 is a transmission unit, 3 is a reception unit, 4 is a control unit, 5 is a memory, 6 is a small number of switches required for mode switching and transmission / reception, and a combination of numbers and stored in the memory 5 An operation unit comprising a keyboard for reading the data and setting various settings; 7, a DTMF generator;
Is a DTMF receiver.
【0007】図1ではセレクティブコール信号としてD
TMFを用いた無線通信機の構成としたが、一般的には
複数のセレクティブコール信号を使い分けている。DT
MFとDCSとを必要に応じて使い分けたり、STCS
Sとを併用したりするが、ここではDTMFを代表とし
て説明する。In FIG. 1, D is used as a selective call signal.
Although the configuration of the wireless communication device using the TMF is adopted, a plurality of selective call signals are generally used properly. DT
MF and DCS can be properly used as needed, or STCS
Although S is used in combination, DTMF will be described as a representative here.
【0008】DTMF信号で選択した相手局との交信中
に混信状態またはノイズによる不要電波によって相手局
との通信が思うようにできなくなって通話チャネルを変
更する場合に、先ず操作部6を操作してチャネルを順次
スキャンして空きチャネルを検索する。空きチャネルが
あると、そのチャネル番号を制御部4に入力し、操作部
6から切換制御信号を設定して空きチャネルと組合わせ
てチャネル切換信号とし、その信号をDTMFジェネレ
ータ7に入力してDTMFのチャネル切換信号を生成し
てその信号を保持する。そのDTMFのチャネル切換信
号は数100mS程度の長さである。送信部2が駆動す
ると出力するように設定しておく。When the communication channel with the partner station cannot be changed due to an unnecessary radio wave due to interference or noise during communication with the partner station selected by the DTMF signal and the communication channel is changed, first, the operation unit 6 is operated. To scan for channels to search for available channels. If there is an available channel, the channel number is input to the control unit 4, a switching control signal is set from the operation unit 6, and combined with the available channel to form a channel switching signal. , And holds the signal. The DTMF channel switching signal has a length of about several hundred milliseconds. It is set so as to output when the transmission unit 2 is driven.
【0009】受信部3では運用中のチャネルの混信状態
を引き続き受信し、操作部6から混信電波による不要電
波レベル判別を設定して不要電波レベル判別手段を始動
させる。この不要電波レベル判別手段は、受信検波出力
が交信可能なレベルのしきい値を設定しておき、受信検
出信号がしきい値と比較して高いか低いかを判別してし
きい値以下になると信号を制御部4に送る。制御部4で
は取り込んだ信号で不要電波レベルの判別を終了して送
信可の制御信号を送信部2に出力する。送信可の制御信
号で送信部2は駆動し、前記のDTMFのチャネル切換
信号を現在交信中のチャネルで送信する。The receiving section 3 continuously receives the interference state of the operating channel, sets the unnecessary radio wave level discrimination by the interference radio wave from the operation section 6, and starts the unnecessary radio wave level discriminating means. The unnecessary radio wave level determination means sets a threshold value of a level at which the reception detection output can communicate, determines whether the reception detection signal is higher or lower than the threshold value, and determines whether the reception detection signal is lower than the threshold value. Then, a signal is sent to the control unit 4. The control unit 4 ends the determination of the unnecessary radio wave level with the received signal and outputs a control signal indicating that transmission is possible to the transmission unit 2. The transmission unit 2 is driven by the control signal indicating that transmission is possible, and transmits the DTMF channel switching signal on the currently communicating channel.
【0010】他方の相手局は、混信状態となって待ち受
け状態が続く中で、受信部3で受信した信号をDTMF
レシーバ8に入力してDTMF信号を検出する。そこに
チャネル切換信号があれば、DTMFジェネレータ7で
切換了解信号をDTMFに変換して送信部2から送信す
る。また、同時に制御部4に受信したチャネル切換信号
を供給すると指定されたチャネルに送信部2も受信部3
も切換わる。While the other station is in the interference state and the standby state continues, the signal received by the receiving unit 3 is transmitted to the DTMF.
The signal is input to the receiver 8 to detect the DTMF signal. If there is a channel switching signal, the DTMF generator 7 converts the switching acknowledgment signal into DTMF and transmits it from the transmitting unit 2. At the same time, the transmitting unit 2 also sends the receiving unit 3 to the channel designated to supply the received channel switching signal to the control unit 4.
Also switches.
【0011】チャネル切換信号を送信した無線局では、
その送信後は待ち受け状態となり、相手局からの応答信
号を待ち、受信信号からDTMFレシーバ8に取り込ん
だ信号中に切換了解信号があると制御部4に取り込み、
メモリ5に一時記憶されたチャネル切換信号で指定した
チャネルに切換わって新しいチャネルで交信が可能とな
る。In the radio station that has transmitted the channel switching signal,
After the transmission, it enters a standby state, waits for a response signal from the partner station, and when the signal received from the received signal into the DTMF receiver 8 includes a switching acknowledge signal, the signal is captured by the control unit 4,
Switching to the channel specified by the channel switching signal temporarily stored in the memory 5 enables communication on a new channel.
【0012】図2は本発明の一実施例である交信中の無
線局間のチャネル切換を示すフローチャートである。図
2について(a)のフローチャートから説明する。
(a)は交信中の一方の無線局であり、判断ボックスH
1で交信中に混信が発生すると、チャネル切換のために
判断ボックスH2で空きチャネルを検索する。処理S1
で検索した空きチャネルに切換制御信号を附加してチャ
ネル切換信号を生成する。そのチャネル切換信号を処理
S2でDTMF信号に編成する。判断ボックスH3で混
信の途絶えを検出し、混信が途絶えると処理S3でその
チャネル変更信号を送信して処理S4で待ち受け状態に
戻る。FIG. 2 is a flow chart showing channel switching between communicating radio stations according to an embodiment of the present invention. FIG. 2 will be described from the flowchart of FIG.
(A) is one of the communicating radio stations, and the decision box H
If interference occurs during communication in step 1, an empty channel is searched in the decision box H2 for channel switching. Processing S1
A channel control signal is generated by adding a switching control signal to the vacant channel searched in step (1). The channel switching signal is formed into a DTMF signal in processing S2. The interruption of the interference is detected in the decision box H3, and when the interference is interrupted, the channel change signal is transmitted in the process S3, and the process returns to the standby state in the process S4.
【0013】交信の相手局では、(b)のフローチャー
トが実行される。判断ボックスH5で交信中に混信が発
生あり、判断ボックスH6で受信した信号中からチャネ
ル切換信号を検出すると、処理S6で指定されたチャネ
ルに送受信の設定を変更し、処理S7で変更了解信号を
送信して、処理S8で待ち受け状態に入る。The communication partner station executes the flowchart of FIG. If interference occurs during communication in the decision box H5 and a channel switching signal is detected from the signals received in the decision box H6, the transmission / reception setting is changed to the channel specified in step S6, and the change acknowledge signal is sent in step S7. It transmits and enters a standby state in step S8.
【0014】再び(a)側のフローチャートに戻り、処
理S4による待ち受け状態から判断ボックスH4で受信
した信号から変更了解信号を検出すると、処理S5で送
信したチャネル切換信号で指定したチャネルに送受信の
設定を切換えて、再び交信状態になる。Returning to the flowchart on the side (a) again, when a change acknowledgment signal is detected from the signal received in the decision box H4 from the standby state in the processing S4, the transmission / reception setting is made to the channel specified by the channel switching signal transmitted in the processing S5. Is switched to the communication state again.
【0015】[0015]
【発明の効果】本発明によれば、混信状態やノイズの不
要電波による交信不能になった時のチャネル切換に際し
て、セレクティブコール信号を用いて一方の局からチャ
ネル切換信号を出し、それを受信して相手局は切換了解
信号を出力してチャネル切換信号で指示されたチャネル
に切換わる。また、チャネル切換信号を送信した側が待
ち受け状態で切換了解信号を受信すると同様に同じチャ
ネルに切換わって交信が再開できる。この切換に要する
時間の中で、空きチャネル検索以外は全て自動処理され
るので、せいぜい1sec程度で同時にチャネル切換が
終了するため速やかに交信の再開が可能になる。According to the present invention, at the time of channel switching when communication becomes impossible due to interference or unnecessary radio waves of noise, a channel switching signal is output from one station using a selective call signal and received. In response, the partner station outputs a switching acknowledge signal to switch to the channel specified by the channel switching signal. Similarly, when the side that transmitted the channel switching signal receives the switching acknowledge signal in the standby state, it can switch to the same channel and resume communication. During the time required for this switching, all processes other than the search for an empty channel are automatically processed. Therefore, the channel switching is completed at the same time in at most about 1 sec, so that the communication can be promptly restarted.
【図1】本発明の一実施例を示す無線通信機のブロック
図である。FIG. 1 is a block diagram of a wireless communication device according to an embodiment of the present invention.
【図2】本発明の一実施例である交信中の無線局間のチ
ャネル切換を示すフローチャートである。FIG. 2 is a flowchart showing channel switching between communicating radio stations according to an embodiment of the present invention.
1 アンテナ 2 送信部 3 受信部 4 制御部 5 メモリ 6 操作部 7 DTMFジェネレータ 8 DTMFレシーバ DESCRIPTION OF SYMBOLS 1 Antenna 2 Transmission part 3 Receiving part 4 Control part 5 Memory 6 Operation part 7 DTMF generator 8 DTMF receiver
Claims (1)
能となって他の空きチャネルに切換える無線通信機にお
いて、 空きチャネルを検索して、検出した空きチャネルに切換
制御信号を付してチャネル切換信号を作成する手段と、 交信中のチャネルの不要電波のレベルが降下して交信可
能なレベルを検出する交信状態検出手段と、 交信状態検出手段の検出信号で前記チャネル切換信号を
送信する手段と、 交信の相手局が前記チャネル切換信号を受信検出すると
切換了解信号を送信してチャネル切換信号で指定された
チャネルに切換わるチャネル切換手段と、 チャネル切換信号を送信して待ち受け状態の時、前記切
換了解信号を受信検出するとチャネル切換信号で指定し
たチャネルに切換わる手段とを具備して、早急なチャネ
ル切換を可能にしたことを特徴とする無線通信機。1. A wireless communication device in which communication is disabled due to unnecessary radio waves in a channel being communicated and switching to another empty channel is performed, and a channel control is performed by searching for an empty channel and adding a switching control signal to the detected empty channel. Means for creating a signal; communication state detection means for detecting a level at which communication is possible when the level of unnecessary radio waves of the channel being communicated drops; and means for transmitting the channel switching signal with a detection signal of the communication state detection means. A channel switching means for transmitting a switching acknowledge signal when a partner station of communication detects the reception of the channel switching signal and switching to a channel specified by the channel switching signal; A means for switching to the channel specified by the channel switching signal when a switching completion signal is detected is received, enabling quick channel switching. Wireless communication device, characterized in that the.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8246837A JP2990592B2 (en) | 1996-08-30 | 1996-08-30 | Wireless communication equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8246837A JP2990592B2 (en) | 1996-08-30 | 1996-08-30 | Wireless communication equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1075194A true JPH1075194A (en) | 1998-03-17 |
JP2990592B2 JP2990592B2 (en) | 1999-12-13 |
Family
ID=17154441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8246837A Expired - Lifetime JP2990592B2 (en) | 1996-08-30 | 1996-08-30 | Wireless communication equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2990592B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100332406B1 (en) * | 1999-11-27 | 2002-04-13 | 서평원 | Apparatus and method for detecting DTMF signal in Wireless Local Loop |
JP2005257485A (en) * | 2004-03-11 | 2005-09-22 | Seiko Clock Inc | Clocking device, clocking system, and clocking method |
-
1996
- 1996-08-30 JP JP8246837A patent/JP2990592B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100332406B1 (en) * | 1999-11-27 | 2002-04-13 | 서평원 | Apparatus and method for detecting DTMF signal in Wireless Local Loop |
JP2005257485A (en) * | 2004-03-11 | 2005-09-22 | Seiko Clock Inc | Clocking device, clocking system, and clocking method |
JP4517162B2 (en) * | 2004-03-11 | 2010-08-04 | セイコークロック株式会社 | Timing device, timing system, and timing method |
Also Published As
Publication number | Publication date |
---|---|
JP2990592B2 (en) | 1999-12-13 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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EXPY | Cancellation because of completion of term |