JPH02285828A - Line changeover system - Google Patents
Line changeover systemInfo
- Publication number
- JPH02285828A JPH02285828A JP10600189A JP10600189A JPH02285828A JP H02285828 A JPH02285828 A JP H02285828A JP 10600189 A JP10600189 A JP 10600189A JP 10600189 A JP10600189 A JP 10600189A JP H02285828 A JPH02285828 A JP H02285828A
- Authority
- JP
- Japan
- Prior art keywords
- line
- backup
- signal
- working
- transmission
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、デジタル無線通信システムに関し、特に予備
通信回線系の使用時でも全回線の故障を監視できる回線
切替システムに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital wireless communication system, and particularly to a line switching system that can monitor failures of all lines even when a backup communication line system is in use.
従来、デジタル無線通信システムは、第２図に示すよう
に、現用通信回線系】Ｏと、予備通信回線系２０と、切
替器３０ａ、３０ｂ、３０ｃ、３０ｄとを有している。Conventionally, a digital wireless communication system has, as shown in FIG. 2, a working communication line system O, a backup communication line system 20, and switching devices 30a, 30b, 30c, and 30d.
ここで、現用通信回線系ｌＯは、無線区間用付加信号が
付加された信号を送出できる現用送信系１１から送出さ
れた信号を、現用回線１２を介して現用受信系１３に与
える構成をとるとともに、切替器３０ａ・伝送路４０・
予備回線２２・切替器３０ｃ・伝送路４１を介して現用
受信系１３に与える構成をとっている。また、予備通信
回線系２０は、無線区間用付加信号が付加された信号を
送出できる予備送信系２１から送出された信号を、予備
回線２２を介して予備受信系２３に与える構成となって
いる。Here, the working communication line system 10 has a configuration in which the signal sent from the working transmitting system 11, which can send a signal to which an additional signal for the radio section is added, is given to the working receiving system 13 via the working line 12. , switch 30a/transmission line 40/
The configuration is such that the signal is supplied to the working receiving system 13 via the protection line 22, the switching device 30c, and the transmission line 41. Further, the backup communication line system 20 is configured to give a signal sent from the backup transmission system 21, which can send out a signal to which an additional signal for the wireless section is added, to the backup reception system 23 via the backup line 22. .
そして、現用送信系１１は、送信符号変換回路１１１と
、現用送信信号処理回路１１２とを含んでいる。現用受
信系１３は、現用フレーム同期回路１３１と、現用受信
信号処理回路１３２と、受信信号変換回路１３３とを含
んでいる。また、予備送信系２１は、予備用送信信号処
理回路２１２を含んでいる。予備受信系２３は、予備用
フレーム同期回路２３１と、予備用受信信号処理回路２
３２とを含んでいる。The current transmission system 11 includes a transmission code conversion circuit 111 and a current transmission signal processing circuit 112. The current receiving system 13 includes a current frame synchronization circuit 131, a current received signal processing circuit 132, and a received signal conversion circuit 133. Further, the backup transmission system 21 includes a backup transmission signal processing circuit 212 . The backup reception system 23 includes a backup frame synchronization circuit 231 and a backup reception signal processing circuit 2.
32.
このようなシステムでは、現用回線１２に故障が発生し
た場合、現用通信回線系ＩＯを現用回線１１から予備回
線２２に切り替えて使用するため、次のようにしている
。すなわち、切替器３０ａ。In such a system, when a failure occurs in the working line 12, the working communication line system IO is switched from the working line 11 to the protection line 22 for use, as follows. That is, the switch 30a.
３０ｂ、３０ｃ、３０ｄを切り替えて、現用送信信号処
理回路１１２から切替器３０ａ・伝送路４０・予備回線
２２・切替器３０ｃ・伝送路４１を介して現用受信系１
３の現用受信信号処理回路１３２に信号を供給している
。30b, 30c, and 30d, and from the working transmitting signal processing circuit 112 to the working reception system 1 via the switch 30a, transmission line 40, protection line 22, switch 30c, and transmission line 41.
The signal is supplied to the currently used received signal processing circuit 132 of No. 3.
また、現用通信回線系１０等の機器の保守を行う場合に
は、予備送信系２１から送出された信号を、予備回線２
２を介して予備受信系２３に与えて゛いる。In addition, when performing maintenance on equipment such as the active communication line system 10, the signals sent from the backup transmission system 21 are transferred to the backup line 10, etc.
2 to the preliminary reception system 23.
しかしながら、上記の回線切替システムでは、予備通信
回線系２０を使用する場合、切替器３０ａ、３０ｂ、３
０ｃ、３０ｄを通していないので、伝送路４０．４１で
故障が発生しても、予備回線２２等の故障を示す警報が
発生しない。このため、予備口１ｓ２２は正常であるに
もかかわらず、現用回線１２から予備回線２２へ切り替
えができないという問題点があった。However, in the above line switching system, when using the backup communication line system 20, the switching devices 30a, 30b, 3
0c and 30d, even if a failure occurs in the transmission line 40, 41, an alarm indicating a failure in the backup line 22, etc. is not generated. For this reason, there was a problem in that it was not possible to switch from the working line 12 to the protection line 22 even though the protection port 1s22 was normal.
本発明は、上記問題点にかんがみてなされたもので、予
備通信回線系の使用時でも全回線の故障を監視できる回
線切替システムの提供を目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a line switching system that can monitor failures of all lines even when a backup communication line system is in use.
上記目的を達成するため、本発明の回線切替システムは
、無線区間用付加信号が付加された信号を送出できる現
用送信系から送出された信号を現用回線を介し”ζ現用
受信系に与える現用通信回線系と、無線区間用付加信号
が付加された信号を送出できる予備送信系から送出され
た信号を予備回線を介して予備受信系に与える予備通信
回線系と、現用通信回線系を現用回線から予備回線に切
り替えて使用するために設けた切替器と有するデジタル
無線通信システムにおいて、前記予備通信回線系を、前
記切替器を介して信号を伝送できる回路構成としたこと
を特徴とするものである。In order to achieve the above object, the line switching system of the present invention transmits a signal sent from a working transmitting system that can send a signal to which an additional signal for the wireless section is added, to a working receiving system via a working line. A backup communication line system that sends signals sent from the backup transmission system that can send signals with additional signals for the radio section to the backup reception system via the backup line; A digital wireless communication system having a switching device provided for switching to a protection line for use, characterized in that the protection communication line system has a circuit configuration that can transmit signals via the switching device. .
［実施例］
以下、本発明の一実施例について図面を参照し゛ζ詳細
に説明する。[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
第１図は、本発明の回線切替システムの実施例を示すブ
ロック図である。なお、第１図の実施例では、第２図の
構成要素と同一のものに同一の符号を付して説明をする
。FIG. 1 is a block diagram showing an embodiment of the line switching system of the present invention. In the embodiment shown in FIG. 1, the same components as those shown in FIG. 2 will be described with the same reference numerals.
第１図に示すデジタル無線通信システムは、現用通信回
線系１０Ａと、予備通信回線系２０Ａと、切替器３０Ａ
、３０Ｃとを有している。The digital wireless communication system shown in FIG. 1 includes a working communication line system 10A, a backup communication line system 20A, and a switching device 30A.
, 30C.
ここで、現用通信回線系１０Ａは、無線区間用付加信号
が付加された信号を送出できる現用送信系１１から送出
された信号を、切替、６３０Ａ、３０Ｃを接続した現用
回線１２を介して現用受信系１３に与える構成をとると
ともに、切替器３０Ａ・伝送路４０・予備回線２２・伝
送路４１・切替器３０Ｃを介して現用受信系１３に与え
る構成をとっている。また、予備通信回線系２０は、無
線区間用付加信号が付加された信号を送出できる予備送
信系２１から送出された信号を、切替器３０Ａ・伝送路
４０・予備回線２２・伝送路４１・切替器３０Ｃを介し
て予備受信系２３に与える構成となっている。Here, the working communication line system 10A receives the signal sent from the working transmission system 11, which can send a signal to which an additional signal for the wireless section is added, via the working line 12 connected to the switching circuits 630A and 30C. The configuration is such that the signal is supplied to the active receiving system 13 via the switch 30A, the transmission line 40, the protection line 22, the transmission line 41, and the switch 30C. In addition, the backup communication line system 20 transmits the signal sent from the backup transmission system 21 that can send the signal to which the additional signal for the wireless section is added to the switch 30A, the transmission line 40, the backup line 22, the transmission line 41, and the switch. The configuration is such that the signal is supplied to the preliminary reception system 23 via the receiver 30C.
そして、現用送信系１１は、送信符号変換回路１１１と
、現用送信信号処理回路１１２とを含んでいる。現用受
信系１３は、現用フレーム同期回路１３１と、現用受信
信号処理回路１３２と、受信信号変換回路１３３とを含
んでいる。また、予備送信系２１は、予備用送信信号処
理回路２１２を含んでいる。予備受信系２３は、予備用
フレーム同期回路２３１と、予備用受信信号処理回路２
３２とを含んでいる。The current transmission system 11 includes a transmission code conversion circuit 111 and a current transmission signal processing circuit 112. The current receiving system 13 includes a current frame synchronization circuit 131, a current received signal processing circuit 132, and a received signal conversion circuit 133. Further, the backup transmission system 21 includes a backup transmission signal processing circuit 212 . The backup reception system 23 includes a backup frame synchronization circuit 231 and a backup reception signal processing circuit 2.
32.
このようなシステムの作用を説明する。The operation of such a system will be explained.
現用回線１２に故障が発生した場合、現用通信回線系１
０Ａを現用口ｌｌＡｌ１から予備回線２２に切り替えて
使用するため、次のようにしている。If a failure occurs in the working line 12, the working communication line system 1
In order to use 0A by switching from the working port IIAl1 to the protection line 22, the following procedure is performed.
すなわち、切替器３０Ａ、３０Ｃを切り替えて、現用送
信信号処理回路１１２から切替器３０Ａ・切替ＷＮ ３
０ Ｃを介して現用受信系１３の現用受信信号処理回路
１３２に信号を供給している。That is, by switching the switches 30A and 30C, the current transmission signal processing circuit 112 is switched to the switch 30A/switch WN 3.
The signal is supplied to the currently used received signal processing circuit 132 of the currently used receiving system 13 via the 0C.
また、現用通信回線系１０等の機器の保守を行う場合に
は、予備送信系２１から送出された信号を、切替器３０
Ａ・伝送路４０・予備回線２２・伝送路４１・切替器３
０Ｃを介して予備受信系２３に与えている。なお、当≧
亥システムにおいて、伝送路４０．４１・予備回線２２
等の監視は、予備用送信信号処理回路２１２から送出さ
れる速度変換後の予備回線監視用信号を予備用受信信号
処理回路２３２で受信して行っている。したがって、本
実施例の回線切替システムは、切替器３０Ａ・伝送路４
０・予備回線２２・伝送路４１・切替器３０Ｃの故障等
の障害をすべて監視できる。In addition, when performing maintenance on equipment such as the active communication line system 10, the signal sent from the backup transmission system 21 is transferred to the switch 30.
A, transmission line 40, backup line 22, transmission line 41, switching device 3
It is provided to the backup reception system 23 via 0C. In addition, this ≧
In the Pig system, transmission lines 40, 41 and protection line 22
Such monitoring is performed by receiving a speed-converted protection line monitoring signal sent from the protection transmission signal processing circuit 212 by the protection reception signal processing circuit 232. Therefore, in the line switching system of this embodiment, the switching device 30A and the transmission line 4
0, backup line 22, transmission line 41, and switching device 30C can all be monitored for failures.
以上のように本発明によれば、予備通信回線系を、全切
替器を介して信号を伝送できる回路構成としたので、切
替器・伝送路・予備回線等の回線の障害を確実に監視で
きる。As described above, according to the present invention, the backup communication line system has a circuit configuration that allows signals to be transmitted through all switching devices, so that failures in lines such as switching devices, transmission lines, backup lines, etc. can be reliably monitored. .
第１図は本発明にかかる回線切替システムの一実施例を
示すブロック図、第２図は従来の回線切替システムを示
すブロック図である。
１０Ａ・・・現用通信回線系 １１・・・現用送信系１
２・・・現用回線 １３・・・現用受信系２Ｏ
Ａ・・・予備通信回線系 ２１・・・予備送信系２２・
・・予備回線 ２３・・・予備受信系３ＯＡ、
３０Ｃ・・・切替器FIG. 1 is a block diagram showing an embodiment of a line switching system according to the present invention, and FIG. 2 is a block diagram showing a conventional line switching system. 10A...Working communication line system 11...Working transmission system 1
2... Working line 13... Working receiving system 2O
A... Backup communication line system 21... Backup transmission system 22.
...protection line 23...protection reception system 3OA,
30C...switcher
Claims (1)
送信系から送出された信号を現用回線を介して現用受信
系に与える現用通信回線系と、無線区間用付加信号が付
加された信号を送出できる予備送信系から送出された信
号を予備回線を介して予備受信系に与える予備通信回線
系と、現用通信回線系を現用回線から予備回線に切り替
えて使用するために設けた切替器と有するデジタル無線
通信システムにおいて、前記予備通信回線系を、前記切
替器を介して信号を伝送できる回路構成としたことを特
徴とする回線切替システム。A working communication line system that sends a signal to which an additional signal for the wireless section has been added, and a working communication line system that sends a signal sent out from a working transmitting system to a working receiving system via a working line, and a signal to which an additional signal for the wireless section has been added. A digital communication system that has a backup communication line system that provides signals sent from the backup transmission system to the backup reception system via the backup line, and a switching device that is provided to switch the working communication line system from the working line to the protection line. 1. A line switching system in a wireless communication system, characterized in that the backup communication line system has a circuit configuration capable of transmitting signals via the switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10600189A JP2782775B2 (en) | 1989-04-27 | 1989-04-27 | Line switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10600189A JP2782775B2 (en) | 1989-04-27 | 1989-04-27 | Line switching system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02285828A true JPH02285828A (en) | 1990-11-26 |
| JP2782775B2 JP2782775B2 (en) | 1998-08-06 |
Family
ID=14422460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10600189A Expired - Lifetime JP2782775B2 (en) | 1989-04-27 | 1989-04-27 | Line switching system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2782775B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5327275A (en) * | 1990-10-30 | 1994-07-05 | Fujitsu Limited | Switching system of optical transmission lines for protecting from trouble |
-
1989
- 1989-04-27 JP JP10600189A patent/JP2782775B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5327275A (en) * | 1990-10-30 | 1994-07-05 | Fujitsu Limited | Switching system of optical transmission lines for protecting from trouble |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2782775B2 (en) | 1998-08-06 |
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