JPS60169241A - Service channel replay system in digital microwave communication system - Google Patents

Service channel replay system in digital microwave communication system

Info

Publication number
JPS60169241A
JPS60169241A JP59023433A JP2343384A JPS60169241A JP S60169241 A JPS60169241 A JP S60169241A JP 59023433 A JP59023433 A JP 59023433A JP 2343384 A JP2343384 A JP 2343384A JP S60169241 A JPS60169241 A JP S60169241A
Authority
JP
Japan
Prior art keywords
service channel
squelch
alarm
relay station
line
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
JP59023433A
Other languages
Japanese (ja)
Inventor
Ikufumi Makino
槙野　幾文
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP59023433A priority Critical patent/JPS60169241A/en
Publication of JPS60169241A publication Critical patent/JPS60169241A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To prevent relay of a service channel by reinserting a service channel from a reception system generating an alarm to a transmission system of the system in a relay station where a squelch alarm takes place. CONSTITUTION:A relay station consists of the 1st the 2nd lines, antennas 10a, 10b (suffixes a, b indicate the 1st and the 2nd system respectively), receivers 12a, 12b, transmitters 13a, 13b and tranmission antennas 11a, 11b. Service channel signals 14a, 14b are transmitted from the receivers 12a, 12b and the signals are switched by an SW100, branched (102) to an intra-office service channel 107 and further branched (103). The service channel 108 generated in the relay station is superimposed on the 1st and 2nd line by branching devices 104-106. Moreover, the service channel from a high-order station is controlled by switching SW101a, 101b. If a squelch alarm takes place, the SW100 is changed over and the service channel signal from the high-order is transmitted to the low-order. Thus, the continuity of the service channel is maintained.

Description

【発明の詳細な説明】 （技術分野） 本発明はディジタルマイクロ波通信システムにおける中
継局が２つ以上継続して存在するシステムにおいて、ｖ
＠線系の障害時にサービスチャンネルを確保出来る様に
したサービスチャンネル中継方式に関するものである。Detailed Description of the Invention (Technical Field) The present invention provides a digital microwave communication system in which two or more relay stations continuously exist.
This invention relates to a service channel relay system that allows a service channel to be secured in the event of a failure in the @ line system.

（従来技術） 従来、この種のサービスチャンネル中継方式は中継局が
継続して存在する場合、スケルチアラームが発生した中
継局でンよ無線系にあるいわゆる将棋倒し現象を防止す
る機構によシ受信系よシのサービスチャンネルを選択す
る機能が働かないので、場合によりスケルチアラームが
発生した中継局よｐ前の局からのサービスチャンネル信
号が取力出せない欠点があった。(Prior art) Conventionally, in this type of service channel relay system, if a relay station continues to exist, the relay station where the squelch alarm has occurred will not be activated. Since the function to select a different service channel does not work, there is a drawback that in some cases, a service channel signal from a station before the relay station where the squelch alarm has occurred cannot be retrieved.

（発明の目的） 本発明は、スケルチアラームの発生した中継局に於いて
、それによシ選択された受信系よシのサービスチャネル
信号を、スケルチアラームの出た系の送信系に再挿入す
ることによシ、上記欠点を解決し、後続の中継局に於い
てサービスチャンネルを確保出来るようにするものであ
る。(Object of the Invention) The present invention is directed to reinserting the service channel signal of the receiving system or other system selected by the relay station into the transmitting system of the system where the squelch alarm occurred in the relay station where the squelch alarm occurred. The present invention is intended to solve the above-mentioned drawbacks and to ensure a service channel at subsequent relay stations.

（発明の構成） と呼ぶ）で、同方向に向う２つの無線回線（以下第１回
線及び第２回線と呼ぶ）に固有であり、打合電話等の目
的に使用される伝送路（以下サービスチャンネルと呼ぶ
）について、無線回線の受信系（以下受信系と呼ぶ）か
ら出されるスケルチアラームを用いて、スケルチアラー
ムが出ていない方の受信系よシのサービスチャンネルを
選択する手段を具備し、さらにスケルチアラームが出て
いる受信系に接続される無線回線の送信系（以下送信系
と呼ぶ）に対して、上記で選択されたサービスチャンネ
ルの信号及び当該中継局で発生するサービスチャンネル
信号とを合成し挿入する手段を具備することをｆＦ宅と
するディジタルマイクロ波通信システムにおけるサービ
スチャンネル中継方式である。(hereinafter referred to as ``Structure of the Invention''), which is unique to two wireless lines going in the same direction (hereinafter referred to as the first line and second line), and is a transmission line used for purposes such as meeting telephone calls (hereinafter referred to as service line). means for selecting a service channel using a squelch alarm issued from a reception system (hereinafter referred to as reception system) of a wireless line, as compared to a reception system for which no squelch alarm is issued; Furthermore, the signal of the service channel selected above and the service channel signal generated at the relevant relay station are transmitted to the transmission system of the wireless line connected to the reception system where the squelch alarm is occurring (hereinafter referred to as the transmission system). This is a service channel relay system in a digital microwave communication system in which the fF is equipped with means for combining and inserting.

（実施例の説明） 次に本発明の実施例について図面を参照して説明する。(Explanation of Examples) Next, embodiments of the present invention will be described with reference to the drawings.

第１図は、中継局１，２が継続して接続される様子を示
している。例えば中継局１の受信系でスケルチアラーム
が発生すると無線系にあるいわゆる将棋倒し防止機構が
作動して、中継局２ではスケルチアラームが発生しない
特性がある。FIG. 1 shows how relay stations 1 and 2 are continuously connected. For example, when a squelch alarm occurs in the receiving system of the relay station 1, a so-called chess-toppling prevention mechanism in the wireless system is activated, and the relay station 2 has a characteristic that no squelch alarm occurs.

一方、中継局は第２図に示されるとと（受信アンテナ１
０ａ、１０ｂ（以下ａ、ｂはそれぞれ第１゜２回線に関
係するものを指す）、無線受信系、１２ａ、１２ｂ無線
送信系１３ａ、１３ｂ及び送（’ｉｔ７ンテナｌｌａ、
ｌｌｂよシ構成される。無線受信系よシ出力されるサー
ビスチャンネル信号１４ａ。On the other hand, the relay station is shown in FIG.
0a, 10b (hereinafter a, b refer to those related to the 1st and 2nd lines, respectively), radio reception system, 12a, 12b radio transmission system 13a, 13b, and transmission ('it7 antenna lla,
It is composed of llb. Service channel signal 14a output from the radio reception system.

１４ｂはスイッチ１ｏｏにょシ選択され分波器１０２経
由中継局２用のサービスチャンネルとして出力されると
ともに分波器１０３に入力される。14b is selected by the switch 1oo and is output as a service channel for the relay station 2 via the duplexer 102, and is also input to the duplexer 103.

分波器１０３の出力信号はスイッチｘｏ１ａ。The output signal of the duplexer 103 is sent to the switch xo1a.

１０１ｂを経由それぞれ合成器１０５，１０６で、この
中継局で発生するサービスチャネル信号１０８を分波器
１０４で分割されたものと合成され、それぞれ信号１５
ａ、１５ｂとして無線送信系に渡さレル。スインｆ１０
０，１０１ａ、ＩＯＩＭ；を無１受信系よシ出力される
スケルチアラームにょシ制御される。スイッチ１００は
スケルチアラーム発生時そのアラームが発生していない
側よ）のサービスチャンネル信号を選択する様に制御さ
れ、又スイッチ１０１ａ及びＩＯＩＭよそれぞれ第１及
び第２回線系のスケルチアラームが発生したとき接続さ
れる様に制御される。The service channel signal 108 generated at this relay station is combined with the signal divided by the demultiplexer 104 in combiners 105 and 106, respectively, through signal 101b.
rel passed to the wireless transmission system as a, 15b. swing f10
0, 101a, IOIM; is controlled by the squelch alarm output from the receiving system. The switch 100 is controlled to select the service channel signal of the side where the alarm is not generated when a squelch alarm occurs, and the switch 101a and IOIM are controlled to select the service channel signal of the side where the squelch alarm is not generated, and when the squelch alarm of the first and second line systems is generated, respectively, It is controlled so that it is connected.

（発明の効果） 本発明は以上説明した様に中継局でステルチア２−ムが
発生した場合、その局でその局よシ前から伝送されて　
ているサービスチャンネル信号をスケルチアラームが発
生している側の系（第１又は第２あるいは両方の回Ｍ系
）に再挿入する様に構成することにょシサービスチャン
ネルの連続性を確保することが出来る効果がある。(Effects of the Invention) As explained above, the present invention provides that when stealthiam occurs at a relay station, the station transmits the signal from the previous station.
Continuity of the service channel can be ensured by configuring the system so that the service channel signal that is in use is re-inserted into the system on which the squelch alarm is occurring (first, second, or both systems). There is a possible effect.

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

第１図と第２図は、本発明の一実施例を示す構成図であ
る。 １．２・・・・・・中継局、１０ａ、ｌＱｂ・・・・・
・受信アンテナ、ｌｌａ、ｌｌｂ・・・・・・送信アン
テナ、１２ａ。 １２ｂ・・・・・・無線受信系、１３ａ、１３ｂ・・・
・・・無線送４Ｍ系、１４ａ、１４ｂ・・・・・・受信
サービスチャンネル信４’ｔ、１５ａ、１５ｂ・・・・
・・送信サービスチャンネル信号、１００，１０１ａ、
１０１ｂ−・・・・スイッチ、１０２．１０３，１０４
・・・・・・分波器、１０５，１０６・・・・・・合成
器、１ｏ７，１０８町・・局内サービスチャンネル信号
。FIGS. 1 and 2 are configuration diagrams showing one embodiment of the present invention. 1.2...Relay station, 10a, lQb...
- Receiving antenna, lla, llb...Transmitting antenna, 12a. 12b... Radio reception system, 13a, 13b...
...Radio transmission 4M system, 14a, 14b...Reception service channel signal 4't, 15a, 15b...
...Transmission service channel signal, 100, 101a,
101b-...Switch, 102.103,104
...Brancher, 105,106...Synthesizer, 1o7,108 town...Internal service channel signal.

Claims (1)

【特許請求の範囲】[Claims] 同方向に向う２つの無線回線（以下第１回線及び第２回
線と呼ぶ）に固有であシ、打金電話等の目的に使用され
る伝送路（以下サービスチャンネルと呼ぶ）について、
無線回線の受信系（以下受信系と呼ぶ）から出されるス
ケルチアラームを用（・て、スケルチアラームが出てい
ない方の受信系よシのサービスチャンネルを選択する手
段を具備し、さらにスケルチアラームが出ている受信系
に接続される無線回線の送信系（以下送信系と呼ぶ）に
対して、上記で選択されたサービスチャンネルの信号及
び尚該中継局で発生するサービスチャ／ネル信号とを合
成し挿入する手段を具備することを特徴とするディジタ
ルマイクロ波通信システムにおけるサービスチャンネル
中継方式。Regarding the transmission path (hereinafter referred to as service channel) that is unique to two wireless lines going in the same direction (hereinafter referred to as the first line and second line) and used for purposes such as wired telephones,
It uses the squelch alarm issued from the receiving system of the radio line (hereinafter referred to as the receiving system), and is equipped with means for selecting a service channel from the receiving system on which the squelch alarm is not issued. The signal of the service channel selected above and the service channel/channel signal generated at the relay station are combined for the transmission system (hereinafter referred to as the transmission system) of the wireless line connected to the receiving system that is outgoing. A service channel relay method in a digital microwave communication system, characterized by comprising means for inserting a service channel.
JP59023433A 1984-02-10 1984-02-10 Service channel replay system in digital microwave communication system Pending JPS60169241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59023433A JPS60169241A (en) 1984-02-10 1984-02-10 Service channel replay system in digital microwave communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59023433A JPS60169241A (en) 1984-02-10 1984-02-10 Service channel replay system in digital microwave communication system

Publications (1)

Publication Number Publication Date
JPS60169241A true JPS60169241A (en) 1985-09-02

Family

ID=12110364

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59023433A Pending JPS60169241A (en) 1984-02-10 1984-02-10 Service channel replay system in digital microwave communication system

Country Status (1)

Country Link
JP (1) JPS60169241A (en)

Similar Documents

Publication Publication Date Title
US5590173A (en) Delay insensitive base station-to-handset interface for radio telephone systems
US5946622A (en) Method and apparatus for providing cellular telephone service to a macro-cell and pico-cell within a building using shared equipment
JPS619039A (en) Multi-channel access radio system
JP2695048B2 (en) Cordless telephone system and range switching control method
AU1872997A (en) Method and apparatus for directional radio communication
JPS60169241A (en) Service channel replay system in digital microwave communication system
JP2912229B2 (en) Mobile radio terminal
JPH0816970A (en) Small scale radio repeater system
JP2533803B2 (en) Cordless telephone equipment
JP3397307B2 (en) Data and voice shared wireless communication device
JPH04321326A (en) Ground-to-air radio equipment controller
JPH0124391B2 (en)
JP3457255B2 (en) Mobile wireless communication device
GB1502255A (en) Network radio systems
JPH0735499Y2 (en) CATV bidirectional relay amplifier
JP2000013245A (en) Microwave transmitter
JPH04127622A (en) Mobile communication system
JPH05167632A (en) Transmission system
JPS62133833A (en) Method for switching base station during talking
JPS63303524A (en) Train radio telephone system
JP2001144664A (en) Wireless relay system
JPH02253725A (en) Service channel signal transmission system
JPS5947904B2 (en) Dual transmission communication method
JPS6245227A (en) Radio transimitter
JPH0714160B2 (en) Remote monitoring controller