JPS5823776B2 - Wireless communication method - Google Patents
Wireless communication methodInfo
- Publication number
- JPS5823776B2 JPS5823776B2 JP54054013A JP5401379A JPS5823776B2 JP S5823776 B2 JPS5823776 B2 JP S5823776B2 JP 54054013 A JP54054013 A JP 54054013A JP 5401379 A JP5401379 A JP 5401379A JP S5823776 B2 JPS5823776 B2 JP S5823776B2
- Authority
- JP
- Japan
- Prior art keywords
- channel
- frequency
- mobile station
- station
- wireless communication
- 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.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 3
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
Description
【発明の詳細な説明】
本発明はブレストーク方式の無線通話において、トーン
・スケルチ装置の解除をチャンネル切替スイッチにより
行う無線通話方式に関するもので、さらに詳しくいえば
第１および第２の二つのチャンネル周波数を有し、これ
ら各チャンネル周波数を切替えて運用する単一回線のブ
レストーク無線通話方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wireless communication system in which a tone squelch device is canceled by a channel changeover switch in a breathtalk wireless communication system. The present invention relates to a single-line BreathTalk wireless communication system that has a frequency and operates by switching between these channel frequencies.
従来のこの種のブレストーク無線通話方式の一例を第１
図に示し説明すると、図において、１は統制局呼たは中
継局、２はアンテナ、３，４は移動局である。An example of this type of conventional BreathTalk wireless communication system is shown in the first example.
To illustrate and explain, in the figure, 1 is a control station or a relay station, 2 is an antenna, and 3 and 4 are mobile stations.
そして、統制局または中継局１がアンテナ２を経由して
移動局３と搬送波であるチャンネル周波数ｆ１を音声帯
域外の低周波数ｆ’ｒｔで変調してなる交信周波数５で
通話するように構成されている。The control station or relay station 1 is configured to communicate with the mobile station 3 via the antenna 2 at a communication frequency 5 obtained by modulating the channel frequency f1, which is a carrier wave, with a low frequency f'rt outside the voice band. ing.
才だ、移動局４は上記と同一の搬送波であるチャンネル
周波数ｆ１を音声帯域外の低周波数ｆ’ｌで変調してな
る交信周波数６で、自局の統制局捷たは中継局あるいは
他の移動局との間で通話を行うように構成されている。The mobile station 4 uses a communication frequency 6, which is obtained by modulating the channel frequency f1, which is the same carrier wave as above, with a low frequency f'l outside the voice band, and transmits it to its own control station, relay station, or other station. The device is configured to communicate with a mobile station.
しかしながら、このような構成の無線通話方式において
は、チャンネル切替スイッチ（図示せず）によってチャ
ンネルを切替えると、交信周波数５は搬送波であるチャ
ンネル周波数ｆ２を音声帯域外の低周波数ｆＴｔで変調
したものきなり、捷た、交信周波数６は搬送波であるチ
ャンネル周波数ｆ２を音声帯域外め低周波数ｆＴ２で変
調したものとなり、力１つ搬送波に音声帯域外の変調を
かけておきそれを受信機で検出して制御する制御回路に
よって受信入力が無くなった場合音声出力を切断する、
いわゆるトーン・スケルチ装置が動作しているため、統
制局または中継局１と移動局４との間、あるいは移動局
３と移動局４との間の通話は不可能であった。However, in a wireless communication system with such a configuration, when the channel is changed using a channel changeover switch (not shown), the communication frequency 5 becomes the carrier wave, which is the channel frequency f2, modulated by a low frequency fTt outside the voice band. The communication frequency 6 is obtained by modulating the carrier wave, channel frequency f2, with a low frequency fT2 outside the voice band. The control circuit cuts off the audio output when there is no reception input,
Since the so-called tone squelch device was operating, communication between the control station or relay station 1 and the mobile station 4, or between the mobile station 3 and the mobile station 4 was impossible.
本発明は以上の点に鑑み、このような問題を解決すると
共にかかる欠点を除去すべくなされた無線通話方式を提
供するもので、一方のチャンネル周波数ではトーン・ス
ケルチ装置を動作状態で使用し、他方のチャンネル周波
数の共通波はチャンネル切替スイッチを切替えると同時
にトーン・スケルチ装置の動作を解除して通話を行うよ
うにしたものである。In view of the above points, the present invention provides a wireless communication system designed to solve such problems and eliminate such drawbacks, in which a tone squelch device is used in operation at one channel frequency, For the common wave of the other channel frequency, the operation of the tone/squelch device is canceled at the same time as the channel changeover switch is changed, so that a conversation can be made.
以下、図面に基づき本発明の実施例を詳細に説明する。Embodiments of the present invention will be described in detail below based on the drawings.
第２図は本発明による無線通話方式の一実施例を示す構
成図で、説明に必要な部分のみを示す。FIG. 2 is a block diagram showing an embodiment of the wireless communication system according to the present invention, and only the parts necessary for explanation are shown.
図において１１は統制局または中継局、１２はアンテナ
、１３は第１の移動局、１４は第２の移動局である。In the figure, 11 is a control station or a relay station, 12 is an antenna, 13 is a first mobile station, and 14 is a second mobile station.
そして、実線で示す１５は統制局寸たは中継局１１：第
１の移動局１３との交信周波数で、この交信周波数１５
は搬送波であるチャンネル周波数ｆ１を音声帯域外の低
周波数ｆＴｔで変調してなる周波数である。15 indicated by a solid line is the communication frequency between the control station or relay station 11: the first mobile station 13, and this communication frequency 15
is a frequency obtained by modulating the channel frequency f1, which is a carrier wave, with a low frequency fTt outside the voice band.
１だ、破線で示す１６は統制局または中継局１１と第１
および第２の移動局１３．１４、ならびに第１の移動局
１３と第２の移動局１４との交信周波数で、この交信周
波数１６は上記交信周波数１５のチャンネル周波数ｆ１
と異なるチャンネル周波数ｆ２の共通波である。1, 16 shown by the broken line is the control station or relay station 11 and the first
and the second mobile station 13, 14, and the communication frequency between the first mobile station 13 and the second mobile station 14, and this communication frequency 16 is the channel frequency f1 of the communication frequency 15.
This is a common wave with a different channel frequency f2.
そして、第１の移動局１３からなる第１の無線装置およ
び第２の移動局１４からなる第２の無線装置は、それぞ
れ第１および第２のチャンネル周波数からなる交信周波
数１５．１６を有し、かつチャンネル切替スイッチ（図
示せず）によって第１のチャンネル周波数を第２のチャ
ンネル周波数からなる交信周波数１５．１６を有し、か
つチャンネル切替スイッチ（図示せず）によって第１の
チャンネル周波数を第２のチャンネル周波数に切替える
と同時にトーン・スケルチ装置（図示せず）を非動作状
態に制御するチャンネル切替手段を備えている。The first wireless device consisting of the first mobile station 13 and the second wireless device consisting of the second mobile station 14 each have a communication frequency of 15.16 consisting of the first and second channel frequencies. , and has an exchange frequency of 15.16 consisting of a first channel frequency and a second channel frequency by a channel changeover switch (not shown), and a channel changeover switch (not shown) changes the first channel frequency to a second channel frequency. A channel switching means is provided for switching to the second channel frequency and at the same time controlling a tone squelch device (not shown) to be inactive.
つきにこの第２図ζこ示す実施例の動作を説明する。The operation of the embodiment shown in FIG. 2 will now be explained.
寸ず、常時は、統制局または中継局１１と移動局１３と
が第１のチャンネル周波数である交信周波数１５で通話
している。At all times, the control station or relay station 11 and the mobile station 13 are communicating on the communication frequency 15, which is the first channel frequency.
この場合、第２の移動局１４のトーン・スケルチ装置が
動作しているので、第２の移動局１４と第１の移動局１
３との間、もしくは第２の移動局１４と統制局または中
継局１１との間の通話はできない。In this case, since the tone squelch device of the second mobile station 14 is operating, the second mobile station 14 and the first mobile station 1
3 or between the second mobile station 14 and the control station or relay station 11.
つきに、例えば、第１の移動局１３においてチャンネル
切替スイッチを第２のチャンネル周波数である交信周波
数１６に切替えると、この切替えに同期してトーン・ス
ケルチ装置が解除され非動作状態に移行する。For example, when the channel selector switch in the first mobile station 13 is switched to the communication frequency 16, which is the second channel frequency, the tone squelch device is released in synchronization with this switch and enters a non-operating state.
そして、通信可能範囲（サービス・エリア）を分割した
他のゾーンとの共通波、すなわち第２のチャンネル周波
数である共通の交信周波数１６で交信することにより、
統制局または中継局１１と第２の移動局１４との間、第
１の移動局１３と第２の移動局１４との間、統制局捷た
は中継局１１との第１の移動局１３との間の通話がそれ
ぞれ可能となる。By communicating with other zones into which the communication range (service area) is divided, using the common wave, that is, the common communication frequency 16, which is the second channel frequency,
between the control station or relay station 11 and the second mobile station 14; between the first mobile station 13 and the second mobile station 14; between the control station or relay station 11 and the first mobile station 13; It is now possible to make calls between the two.
なお、この第２図に示す実施例においては、チャンネル
切替によって音声帯域外の低周波数によるチャンネル周
波数への変調もなくしているが、これはトーン・スケル
チ装置を非作動とする技術においては変調した才までも
よいことは明らかであり、本発明の範囲はこの実施例に
より制限されるものではない。In the embodiment shown in FIG. 2, channel switching also eliminates modulation of the channel frequency by low frequencies outside the audio band; It is clear that the scope of the present invention is not limited to this example.
以上の説明から明らかなように、本発明によれば、統制
局呼たは中継局と各移動局との間および各移動局相互間
で無線通話を行うことができ、緊急時に倒れの移動局と
の間においても交信が可能Ｏこなるので、実用上の効果
は極めて犬である。As is clear from the above description, according to the present invention, wireless communication can be performed between a control station or a relay station and each mobile station, and between each mobile station, and when a mobile station falls down in an emergency. Since it is possible to communicate even between
第１図は従来の無線通話方式の一例を示す構成図、第２
図は本発明による無線通話方式の一実施例を示す構成図
である。
１１・・・・・・統制局捷たは中継局、１３，１４・・
・・・・移動局、１５，１６・・・・・・交信周波数。Figure 1 is a configuration diagram showing an example of a conventional wireless communication system;
The figure is a configuration diagram showing an embodiment of the wireless communication system according to the present invention. 11... Control station or relay station, 13, 14...
...Mobile station, 15, 16...Communication frequency.
Claims (1)
れら各チャンネル周波数を切替えて運用する単一回線の
ブレストーク無線通話方式において、前記第１および第
２の二つのチャンネル周波数を有しかつ第１のチャンネ
ル周波数を第２のチャンネル周波数に切替えると同時に
トーン・スケルチ装置を非動作状態に制御するチャンネ
ル切替手段を備えた第１および第２の無線装置を含み、
前記第１のチャンネル周波数ではトーン・スケルチ装置
を動作状態で使用し、前記第１捷たは第２の無線装置の
チャンネル切替スイッチを第２のチャンネル周波数に切
替えると同時にトーン・スケルチ装置を非動作状態に制
御して通話を行い得るようにしたことを特徴とする無線
通話方式。1 In a single-line BreathTalk radio communication system that has two channel frequencies, a first and a second, and operates by switching between these channel frequencies, first and second wireless devices comprising channel switching means for switching one channel frequency to a second channel frequency and simultaneously controlling a tone squelch device to an inactive state;
A tone squelch device is used in an active state at the first channel frequency, and the tone squelch device is deactivated at the same time as the channel selector switch of the first or second radio device is switched to the second channel frequency. A wireless communication system characterized in that a call can be made by controlling the state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54054013A JPS5823776B2 (en) | 1979-05-04 | 1979-05-04 | Wireless communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54054013A JPS5823776B2 (en) | 1979-05-04 | 1979-05-04 | Wireless communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55147044A JPS55147044A (en) | 1980-11-15 |
| JPS5823776B2 true JPS5823776B2 (en) | 1983-05-17 |
Family
ID=12958695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54054013A Expired JPS5823776B2 (en) | 1979-05-04 | 1979-05-04 | Wireless communication method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5823776B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62146290U (en) * | 1986-02-26 | 1987-09-16 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4905302A (en) * | 1987-06-03 | 1990-02-27 | General Electric Company | Trunked radio repeater system |
| JPH0338117A (en) * | 1989-07-04 | 1991-02-19 | Mitsubishi Electric Corp | Radio equipment |
-
1979
- 1979-05-04 JP JP54054013A patent/JPS5823776B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62146290U (en) * | 1986-02-26 | 1987-09-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55147044A (en) | 1980-11-15 |
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