JPH0522376A - Alarm transmission system - Google Patents
Alarm transmission systemInfo
- Publication number
- JPH0522376A JPH0522376A JP3173003A JP17300391A JPH0522376A JP H0522376 A JPH0522376 A JP H0522376A JP 3173003 A JP3173003 A JP 3173003A JP 17300391 A JP17300391 A JP 17300391A JP H0522376 A JPH0522376 A JP H0522376A
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- sending end
- signal
- circuit
- parity
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000012937 correction Methods 0.000 claims abstract description 3
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、警報伝送方式に関し、
特に１対Ｎの予備，現用間の回線切替システムを有する
ディジタル無線通信回線において、送端側の障害を受端
側に伝える警報伝送方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm transmission system,
In particular, the present invention relates to an alarm transmission system for transmitting a fault on the sending end side to a receiving end side in a digital wireless communication line having a line switching system between 1: N protection and active lines.
【０００２】[0002]
【従来の技術】従来、この種の回線切替システムにおけ
る警報伝送方式では、送端側で障害が発生した場合に、
図２に示すように送信信号処理回路１内の警報検出回路
４が入力信号Ａの断又は送端警報Ｂを検出し制御信号４
Ａを出力する。一方、多重回路２の出力部に設けられた
出力制御回路６は警報検出回路４の制御信号４Ａにより
出力信号Ｃを止めて受端側のフレーム同期をはずし警報
を発生させることにより、送端側の障害を受端側に伝え
ていた。2. Description of the Related Art Conventionally, in the alarm transmission method in this type of line switching system, when a failure occurs on the sending end side,
As shown in FIG. 2, the alarm detection circuit 4 in the transmission signal processing circuit 1 detects the disconnection of the input signal A or the sending end alarm B, and outputs the control signal 4
Output A. On the other hand, the output control circuit 6 provided in the output section of the multiplexing circuit 2 stops the output signal C by the control signal 4A of the alarm detection circuit 4 to remove the frame synchronization on the receiving end side and generate an alarm, thereby transmitting side Was told to the receiver side.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の警報伝
送方式では、変復調装置へのベースバンド信号のランダ
ム性が失われ、ＩＦスペクトラムが単調となり、変復調
装置のキャリア同期等に影響が出たりする障害がある。
また、この同期すずれが正常に戻った時にフレームの再
引込みを行うまでに時間がかかる等の欠点があった。In the conventional alarm transmission system described above, the randomness of the baseband signal to the modulator / demodulator is lost, the IF spectrum becomes monotonous, and the carrier synchronization of the modulator / demodulator is affected. I have a disability.
In addition, there is a drawback that it takes time to re-draw the frame when the synchronization deviation returns to normal.
【０００４】[0004]
【課題を解決するための手段】本発明の警報伝送方式
は、ディジタル無線通信回線の送端側でパリティ信号を
挿入し受端側で誤り訂正を行う方式を備え、かつ送端側
の障害を受端側へ伝送して１対Ｎの無線通信回線を救済
する回線切替装置を備えた警報伝送方式において、送端
側の警報検出回路の制御により送端側で挿入されるパリ
ティ信号の極性を反転させる反転回路を有し、このパリ
ティ信号の反転情報を受端側で受け送端側の警報と判定
する。The alarm transmission system of the present invention is equipped with a system for inserting a parity signal at the sending end of a digital wireless communication line and performing error correction at the receiving end, and to prevent a failure at the sending end. In an alarm transmission system equipped with a line switching device that transmits to the receiving end side to rescue a 1: N wireless communication line, the polarity of a parity signal inserted at the sending end side is controlled by the control of an alarm detection circuit on the sending end side. It has an inverting circuit for inverting, and the inversion information of this parity signal is determined on the receiving end side as an alarm on the receiving end side.
【０００５】[0005]
【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００６】図１は本発明の一実施例のブロック図であ
る。図１の送信信号処理回路１Ａの多重回路２は速度変
換して無線区間用のフレーム信号、パリティ信号等を多
重化する回路である。パリティ計数回路５は信号をパリ
ティ計数して、パリティ挿入信号を発生させる回路であ
る。反転回路３は多重回路２へ挿入するパリティ信号を
そのまま挿入したり、反転させて挿入する回路である。
警報検出回路４は従来例と同様に送信信号処理回路１Ａ
内の警報検出及び送端警報Ｂの収集回路である。正常で
あれば、パリティ挿入信号はそのまま多重回路２へ挿入
されるが、警報検出回路４により警報が検出されると、
パリティ挿入信号は反転回路３で極性を反転して多重回
路２へ挿入される。従って受信側ではフレーム同期をと
った後、信号のパリティ計数を行い、挿入されているパ
リティ信号と比較するが、送信側でパリティ挿入信号の
正規極性を反転しているために受端側では不一致となり
警報を発生する。したがって受端側で回線切替を行い無
線通信回線を救済することができる。FIG. 1 is a block diagram of an embodiment of the present invention. The multiplexing circuit 2 of the transmission signal processing circuit 1A of FIG. 1 is a circuit that performs speed conversion to multiplex a frame signal, a parity signal, etc. for a wireless section. The parity counting circuit 5 is a circuit that counts the parity of the signal and generates a parity insertion signal. The inverting circuit 3 is a circuit for inserting the parity signal to be inserted into the multiplexing circuit 2 as it is or inverting it and inserting it.
The alarm detection circuit 4 is a transmission signal processing circuit 1A as in the conventional example.
2 is a collection circuit for alarm detection and sending end alarm B in FIG. If normal, the parity insertion signal is inserted into the multiplexing circuit 2 as it is, but when the alarm detection circuit 4 detects an alarm,
The polarity of the parity insertion signal is inverted by the inverting circuit 3 and inserted into the multiplexing circuit 2. Therefore, on the receiving side, after performing frame synchronization, the signal is counted for parity and compared with the inserted parity signal. Next, an alarm is generated. Therefore, the receiving end side can switch the line to rescue the wireless communication line.
【０００７】[0007]
【発明の効果】以上説明したように本発明の警報伝送方
式は、送端側に反転回路とパリティ計数回路とを備える
ことにより、ベースバンド信号のランダム性を損なうこ
となく、又、フレーム同期を外すこともなく送信側の障
害を受端側に伝達することができるという効果がある。As described above, the alarm transmission method of the present invention is provided with the inverting circuit and the parity counting circuit on the transmission end side, so that the randomness of the baseband signal is not impaired and the frame synchronization is performed. There is an effect that a failure on the transmitting side can be transmitted to the receiving side without removing it.
【図１】本発明の一実施例の構成を示すブロック図であ
る。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
【図２】従来の警報伝送方式の送信信号処理回路を示す
ブロック図である。FIG. 2 is a block diagram showing a transmission signal processing circuit of a conventional alarm transmission system.
１，１Ａ 送信信号処理回路 ２ 多重回路 ３ 反転回路 ４ 警報検出回路 ５ パリティ計数回路 ６ 出力制御回路 1,1A transmission signal processing circuit 2 multiple circuits 3 Inversion circuit 4 Alarm detection circuit 5 Parity counting circuit 6 Output control circuit
Claims (2)
ティ信号を挿入し受端側で誤り訂正を行う方式を備え、
かつ送端側の障害を受端側へ伝送して１対Ｎの無線通信
回線を救済する回線切替装置を備えた警報伝送方式にお
いて、送端側の警報検出回路の制御により送端側で挿入
されるパリティ信号の極性を反転させる反転回路を有
し、このパリティ信号の反転情報を受端側で受け送端側
の警報と判定することを特徴とする警報伝送方式。1. A system is provided in which a parity signal is inserted at the sending end of a digital wireless communication line and error correction is performed at the receiving end.
In addition, in the alarm transmission system equipped with a line switching device that transmits a fault on the sending end side to the receiving end side and rescues the 1: N wireless communication line, it is inserted on the sending end side by controlling the alarm detection circuit on the sending end side. An alarm transmission system having an inversion circuit for inverting the polarity of a parity signal to be transmitted, wherein the inversion information of the parity signal is determined by the receiving end as an alarm on the receiving end.
一部を入力して常時パリティ信号の計数を行い正常であ
ればパリティ挿入信号を前記反転回路へそのまま出力す
るパリティ計数回路を有することを特徴とする請求項１
記載の警報伝送方式。2. A parity counting circuit for inputting a part of the output signal on the sending end side of the wireless communication line to constantly count the parity signal and, if normal, directly outputting a parity insertion signal to the inverting circuit. Claim 1 characterized by the above.
Alarm transmission method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173003A JPH0522376A (en) | 1991-07-15 | 1991-07-15 | Alarm transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173003A JPH0522376A (en) | 1991-07-15 | 1991-07-15 | Alarm transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0522376A true JPH0522376A (en) | 1993-01-29 |
Family
ID=15952391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3173003A Pending JPH0522376A (en) | 1991-07-15 | 1991-07-15 | Alarm transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0522376A (en) |
-
1991
- 1991-07-15 JP JP3173003A patent/JPH0522376A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19980203 |