JPH05236067A - Line quality measurement equipment - Google Patents
Line quality measurement equipmentInfo
- Publication number
- JPH05236067A JPH05236067A JP4018030A JP1803092A JPH05236067A JP H05236067 A JPH05236067 A JP H05236067A JP 4018030 A JP4018030 A JP 4018030A JP 1803092 A JP1803092 A JP 1803092A JP H05236067 A JPH05236067 A JP H05236067A
- Authority
- JP
- Japan
- Prior art keywords
- data
- line quality
- communication
- circuit
- measurement
- 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.)
- Withdrawn
Links
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- Dc Digital Transmission (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は回線品質測定装置に関
し、特に無通信時間帯を利用してデータ通信路の回線品
質を測定する回線品質測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line quality measuring device, and more particularly to a line quality measuring device for measuring the line quality of a data communication line by utilizing a non-communication time zone.
【０００２】[0002]
【従来の技術】従来の回線品質測定装置は、回線品質測
定の為に、専用のデータ通信路を確保して測定を行って
いた。2. Description of the Related Art A conventional line quality measuring apparatus secures a dedicated data communication path for measuring the line quality.
【０００３】また、伝送系を構成する搬送装置に回線品
質の測定回路を付加することもあるが、この場合も、回
線品質測定用の専用ビットをアサインすることにより測
定が行なわれていた。Further, a circuit for measuring the line quality may be added to a carrier forming a transmission system, but in this case also, the measurement is performed by assigning a dedicated bit for measuring the line quality.
【０００４】[0004]
【発明が解決しようとする課題】この従来の回線品質測
定装置では、測定の都度、専用のデータ通信路を確保せ
ねばならず、確保できない場合は運用中のデータ通信路
を一時的に運用停止して測定しなければならないという
欠点がある。With this conventional line quality measuring device, a dedicated data communication channel must be secured each time measurement is made, and if it cannot be secured, the operating data communication channel is temporarily suspended. It has the disadvantage of having to be measured.
【０００５】また、搬送装置に専用の測定回路を設け、
回線品質測定用の専用ビットをアサインする方法では、
恒常的に測定ビットを割り当てて使用することになり、
不経済であるとともに通信路を自由に選択して測定する
ことができないという欠点がある。Further, a dedicated measuring circuit is provided in the carrier device,
In the method of assigning a dedicated bit for line quality measurement,
The measurement bit will be allocated and used constantly,
It is disadvantageous in that it is uneconomical and that the communication channel cannot be freely selected and measured.
【０００６】本発明の目的は、上述した欠点を除去し、
データ通信路の運用停止と恒常的な測定ビット割当を排
除し、かつ通信路を自由に選択して測定することができ
る回線品質測定装置を提供することにある。The object of the invention is to eliminate the above-mentioned drawbacks,
An object of the present invention is to provide a line quality measuring device which eliminates the operation stop of a data communication path and constant measurement bit allocation, and which can freely select and measure a communication path.
【０００７】[0007]
【課題を解決するための手段】本発明の回線品質測定装
置は、データ通信路の無通信状態を検出し、検出した無
通信時間帯に、前記データ通信路の回線品質を測定する
ための回線品質計測用データを前記データ通信路を介し
て交信する送受信間で送受信することによって、前記デ
ータ通信路の正常なデータ通信を確保して回線品質を測
定する手段を備えて構成される。A line quality measuring apparatus of the present invention detects a non-communication state of a data communication line and measures a line quality of the data communication line during the detected non-communication time zone. By transmitting and receiving the quality measurement data between the transmitter and the receiver which communicate via the data communication path, a means for ensuring normal data communication of the data communication path and measuring the line quality is configured.
【０００８】[0008]
【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.
【０００９】図１は、本発明の一実施例の回線品質測定
装置の構成を示すブロック図である。図１に示す実施例
は、データ伝送路２を介して対向し、送受信を行なう端
末装置３と端末装置４のそれぞれに並設した回線品質測
定装置１ａと回線品質測定装置１ｂから成る。FIG. 1 is a block diagram showing the configuration of a line quality measuring apparatus according to an embodiment of the present invention. The embodiment shown in FIG. 1 is composed of a line quality measuring device 1a and a line quality measuring device 1b which are opposed to each other via a data transmission path 2 and are arranged in parallel with a terminal device 3 and a terminal device 4 for transmitting and receiving.
【００１０】回線品質測定装置１ａ，１ｂは同一構成
で、端末装置の正常なデータ通信の開始と終了を検出す
る通信開始・終了検出回路５と、通信データを一時退避
させておく通信データバッファ回路６と、送信データを
適宜組合せ多重化して送出するデータ多重化回路７と、
回線品質測定用データを多重化回路７に送出する回線品
質計測用データ出力回路８と、データ通信路２を介して
回線品質測定装置１ｂ側から提供される多重化データを
通信データと回線品質計測用データとに分離するデータ
分離回路９と、回線品質を計測する回線品質計測回路１
０とを備えて構成される。The line quality measuring devices 1a and 1b have the same configuration, and a communication start / end detection circuit 5 for detecting the start and end of normal data communication of a terminal device, and a communication data buffer circuit for temporarily saving communication data 6 and a data multiplexing circuit 7 for appropriately combining and multiplexing transmission data and transmitting the data,
A line quality measurement data output circuit 8 for sending line quality measurement data to the multiplexing circuit 7, and communication data and line quality measurement for the multiplexed data provided from the line quality measuring device 1b side via the data communication path 2. Data separation circuit 9 for separating the data for use and line quality measuring circuit 1 for measuring the line quality
0 and.
【００１１】図２は、図１の実施例の各部の動作を説明
するためのタイミングチャートである。以下、図２を併
せ参照しつつ、本実施例の動作について説明する。FIG. 2 is a timing chart for explaining the operation of each part of the embodiment shown in FIG. The operation of this embodiment will be described below with reference to FIG.
【００１２】端末装置４から出力された正常の送信デー
タとしての信号Ｓ１は、通信開始・終了検出回路６に入
力され、データの先頭が検知された通信開始時点でデー
タ多重化回路８にデータ送信要求を送出する。The signal S1 as normal transmission data output from the terminal device 4 is input to the communication start / end detection circuit 6 and transmitted to the data multiplexing circuit 8 at the communication start time when the beginning of the data is detected. Send the request.
【００１３】また、通信開始・終了検出回路６は、端末
装置４から入力した信号Ｓ１を、一旦通信データバッフ
ァ回路７に格納し、データ多重化回路８からのデータ送
信了解応答を得たのちデータ多重化回路８に信号Ｓ２と
してデータを出力する。Further, the communication start / end detection circuit 6 temporarily stores the signal S1 input from the terminal device 4 in the communication data buffer circuit 7, and obtains a data transmission acknowledge response from the data multiplexing circuit 8 and then data. The data is output to the multiplexing circuit 8 as the signal S2.
【００１４】データ多重化回路８は、通信開始・終了検
出回路５から入力した信号Ｓ２のデータの前に正常の送
信データであることを識別するためのフラグａを付加
し、データ通信路３を経由して対向端末装置４側の回線
品質測定装置２に送信する。The data multiplexing circuit 8 adds a flag a for identifying the normal transmission data before the data of the signal S2 input from the communication start / end detection circuit 5, and connects the data communication path 3 with the flag a. It is transmitted to the line quality measuring device 2 on the side of the opposite terminal device 4 via.
【００１５】次に、データの終了時は、通信開始・終了
検出回路６からデータ多重化回路８に対してデータ送信
終了を通知する。Next, at the end of data, the communication start / end detection circuit 6 notifies the data multiplexing circuit 8 of the end of data transmission.
【００１６】データ多重化回路８は、このデータ送信終
了通知により、回線品質計測用データ出力回路９から品
質計測データを入力し、これにフラグｂを付加して回線
品質測定装置２に送信する。In response to the data transmission end notification, the data multiplexing circuit 8 inputs the quality measurement data from the line quality measurement data output circuit 9, adds the flag b to the quality measurement data, and transmits it to the line quality measuring device 2.
【００１７】次に、受信側の動作について説明する。前
述した送信側の動作と同様に、回線品質測定装置２から
データ通信路３を経由して受信した信号Ｒ１は、データ
分離回路１０に入力される。Next, the operation on the receiving side will be described. Similar to the operation on the transmitting side described above, the signal R1 received from the line quality measuring device 2 via the data communication path 3 is input to the data separation circuit 10.
【００１８】データ分離回路１０は、フラグａとフラグ
ｂによって端末装置４に対する出力か、回線品質計測回
路１１に対する出力かを識別する。The data separation circuit 10 discriminates between the output to the terminal device 4 and the output to the line quality measuring circuit 11 by the flag a and the flag b.
【００１９】受信した信号からフラグａを検出した場合
は端末装置４へ出力し、フラグｂを検出した場合は回線
品質計測回路１１へ品質計測データを出力する。When the flag a is detected from the received signal, it is outputted to the terminal device 4, and when the flag b is detected, the quality measurement data is outputted to the line quality measuring circuit 11.
【００２０】回線品質計測回路１１は、品質計測データ
の入力中のみ回線品質を測定し、結果を表示する。The line quality measuring circuit 11 measures the line quality only while the quality measurement data is being input, and displays the result.
【００２１】以上の動作により、データを送信していな
い空き時間帯を利用して回線品質を測定することができ
る。By the above operation, the line quality can be measured by utilizing the idle time zone in which no data is transmitted.
【００２２】[0022]
【発明の効果】以上説明したように本発明は、無通信状
態を検出し、検出した無通信時間を使用して回線品質を
測定する回線品質計測用データを送出して回線品質を計
測することにより、運用中のデータ通信路を利用し運用
停止を伴わずに回線品質を測定することができるという
効果がある。As described above, the present invention detects the non-communication state and sends the line quality measurement data for measuring the line quality using the detected non-communication time to measure the line quality. As a result, there is an effect that it is possible to measure the line quality without stopping the operation by using the operating data communication path.
【図１】本発明の一実施例の回線品質測定装置の構成を
示すブロック図である。FIG. 1 is a block diagram showing a configuration of a channel quality measuring device according to an embodiment of the present invention.
【図２】図１の各部の動作を説明するためのタイミング
チャートである。FIG. 2 is a timing chart for explaining the operation of each unit in FIG.
１ａ，１ｂ 回線品質測定装置 ２ データ通信路 ３，４ 端末装置 ５ 通信開始・終了検出回路 ６ 通信データバッファ回路 ７ データ多重化回路 ８ 回線品質計測用データ出力回路 ９ データ分離回路 １０ 回線品質計測回路 1a, 1b Line quality measurement device 2 Data communication path 3,4 Terminal device 5 Communication start / end detection circuit 6 Communication data buffer circuit 7 Data multiplexing circuit 8 Line quality measurement data output circuit 9 Data separation circuit 10 Line quality measurement circuit
Claims (1)
出した無通信時間帯に、前記データ通信路の回線品質を
測定するための回線品質計測用データを前記データ通信
路を介して交信する送受信間で送受信することによっ
て、前記データ通信路の正常なデータ通信を確保して回
線品質を測定する手段を備えて成ることを特徴とする回
線品質測定装置。1. A non-communication state of a data communication path is detected, and line quality measurement data for measuring the line quality of the data communication path is communicated through the data communication path during the detected non-communication time zone. A line quality measuring device comprising means for ensuring normal data communication on the data communication path and measuring the line quality by performing transmission and reception between the transmission and reception.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4018030A JPH05236067A (en) | 1992-02-04 | 1992-02-04 | Line quality measurement equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4018030A JPH05236067A (en) | 1992-02-04 | 1992-02-04 | Line quality measurement equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05236067A true JPH05236067A (en) | 1993-09-10 |
Family
ID=11960272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4018030A Withdrawn JPH05236067A (en) | 1992-02-04 | 1992-02-04 | Line quality measurement equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05236067A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010016654A (en) * | 2008-07-03 | 2010-01-21 | Nec Access Technica Ltd | Communication quality measurement system, communication quality measuring method, and communication quality measurement program |
-
1992
- 1992-02-04 JP JP4018030A patent/JPH05236067A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010016654A (en) * | 2008-07-03 | 2010-01-21 | Nec Access Technica Ltd | Communication quality measurement system, communication quality measuring method, and communication quality measurement program |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990518 |