JPH07321802A - System and device for detecting nonagreement of transmission unit - Google Patents

System and device for detecting nonagreement of transmission unit

Info

Publication number
JPH07321802A
JPH07321802A JP6109471A JP10947194A JPH07321802A JP H07321802 A JPH07321802 A JP H07321802A JP 6109471 A JP6109471 A JP 6109471A JP 10947194 A JP10947194 A JP 10947194A JP H07321802 A JPH07321802 A JP H07321802A
Authority
JP
Japan
Prior art keywords
transmission unit
information
unit information
signal
mismatch
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
Application number
JP6109471A
Other languages
Japanese (ja)
Other versions
JP2944420B2 (en
Inventor
Tomoki Yoshihara
知樹 吉原
Kou Murakami
紅 村上
Hitoshi Uematsu
仁 上松
Hiromi Ueda
裕巳 上田
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone Corp
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 Telegraph and Telephone Corp filed Critical NEC Corp
Priority to JP6109471A priority Critical patent/JP2944420B2/en
Publication of JPH07321802A publication Critical patent/JPH07321802A/en
Application granted granted Critical
Publication of JP2944420B2 publication Critical patent/JP2944420B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To provide a transmission unit nonagreement detector capable of easily applying correction when set transmission unit information instructed by setting by a device outside is set erroneously and detecting agreement between received transmission unit information and correct set transmission unit information precisely. CONSTITUTION:A comparison detection circuit 40 detects the agreement of a transmission unit by comparing a device transmission unit signal (d) transmitted to a device inside with a reception transmission unit signal (alpha) latched from a cell data signal (a) at a latch circuit 10. A set transmission unit comparator 70 outputs a transmission unit agreement signal (delta) by a result comparing the set transmission unit information from a set transmission unit signal (b) with device transmission unit information held with a transmission unit holding circuit 61 or the received transmission unit information by a selection control signal (beta) from a state judging control circuit 50. An OR gate 80 outputs a transmission unit agreement signal (c) from the OR of a transmission unit abnormality signal (gamma) outputted from the state judging control circuit 50 and the transmission unit agreement signal (delta).

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ATM(Asynch
ronous Transfer Mode:非同期転
送モード)通信方式に適用されると共に、信号速度の異
なる複数のユーザ情報,及びこれらの信号速度を表わす
伝達単位情報をセル化して伝送する伝達単位不一致検出
方式,及び伝達単位不一致検出装置に関する。
BACKGROUND OF THE INVENTION The present invention relates to an ATM (Asynch)
A transfer unit inconsistency detection method and a transfer unit, which are applied to a transfer system (ronous Transfer Mode) and transmit a plurality of user information having different signal speeds and transfer unit information indicating these signal speeds in cells. The present invention relates to a mismatch detection device.

【0002】[0002]

【従来の技術】従来、異なる信号速度を持つ複数のユー
ザ情報をセル化して伝送するATM通信装置において
は、ATM通信網の輻輳等により受信されるセルの到着
間隔が時間的に変動する。このため、ATM通信装置に
はユーザ情報を再生するため、遅延変動吸収用のバッフ
ァメモリが備えられている。一般に、こうしたバッファ
メモリでは、ATM通信網の品質監視のためにオーバフ
ロー及びアンダフローの監視が行われる。
2. Description of the Related Art Conventionally, in an ATM communication apparatus which transmits a plurality of user information having different signal rates in cells, the arrival intervals of received cells fluctuate with time due to congestion of the ATM communication network. For this reason, the ATM communication device is provided with a buffer memory for absorbing delay variation in order to reproduce the user information. Generally, in such a buffer memory, overflow and underflow are monitored to monitor the quality of the ATM communication network.

【0003】ところで、各ユーザ情報のそれぞれの信号
速度を伝達単位と呼ぶことにし、バッファメモリに対す
るユーザ情報の読み書きが受信セルの到着間隔に応じた
速度で書き込まれ、且つ装置外部からの設定伝達単位情
報に従った速度でユーザ情報が読み出される場合、伝達
単位の不一致が生じるとバッファメモリではオーバフロ
ーやアンダフローを定常的に引き起こすことになる。こ
のため、セル受信側ではバッファメモリのオーバフロ
ー,アンダフローの発生要因が保守者による誤操作でな
いことを区別するため、伝達単位の不一致を監視する必
要がある。
By the way, each signal speed of each user information is referred to as a transmission unit, and reading / writing of user information from / to the buffer memory is written at a speed according to an arrival interval of a receiving cell, and a setting transmission unit from the outside of the device. When user information is read at a speed according to the information, if the transmission units do not match, overflow or underflow will constantly occur in the buffer memory. For this reason, on the cell receiving side, it is necessary to monitor the disagreement of transmission units in order to distinguish that the cause of the overflow or underflow of the buffer memory is not an erroneous operation by the maintenance person.

【0004】そこで、伝達単位の不一致を検出するため
には、図3に示すように、セルCのヘッダHにセル化さ
れる伝達単位情報用の伝達単位情報領域を割り当て、セ
ル送信側ではこのヘッダHにセル化したユーザ情報の伝
達単位情報を受信伝達単位情報として挿入した後、設定
伝達単位情報と受信伝達単位情報とを比較することによ
り不一致の判定を行っている。
Therefore, in order to detect the disagreement of the transmission units, as shown in FIG. 3, the transmission unit information area for the cellized transmission unit information is assigned to the header H of the cell C, and the cell transmission side uses this transmission unit information area. After inserting the transmission unit information of the cellized user information into the header H as the reception transmission unit information, the set transmission unit information and the reception transmission unit information are compared to determine the mismatch.

【0005】図4は、従来の伝達単位不一致検出装置の
基本構成をブロック図により示したものである。この伝
達単位不一致検出装置は、受信されるセルデータ信号a
から伝達単位情報を受信伝達単位情報としてラッチする
ラッチ回路1と、ラッチした受信伝達単位情報と装置外
部で設定された設定伝達単位信号bに含まれる設定伝達
単位情報とを比較する比較回路2と、この比較結果に応
じて前方/後方保護処理を行って伝達単位不一致警報信
号cを発生する前方/後方保護処理回路3とから構成さ
れる。
FIG. 4 is a block diagram showing the basic construction of a conventional transmission unit mismatch detection apparatus. This transmission unit mismatch detection device is used for receiving the received cell data signal a.
A latch circuit 1 for latching the transfer unit information as the received transfer unit information from the device, and a comparison circuit 2 for comparing the latched received transfer unit information with the set transfer unit information included in the set transfer unit signal b set outside the apparatus. , And a front / rear protection processing circuit 3 which performs front / rear protection processing according to the comparison result and generates a transmission unit mismatch warning signal c.

【0006】ここで、前方/後方保護処理回路3は、伝
送路のビット誤りにより伝達単位が不一致中に誤って不
一致を解除してしまうことや、不一致中に誤って一致と
判定してしまうことを防止するために働く。
Here, the forward / backward protection processing circuit 3 may erroneously cancel the mismatch when the transmission units are mismatched due to a bit error in the transmission path, or may be erroneously determined as the match during the mismatch. Work to prevent.

【0007】図5は、この伝達単位不一致検出装置内で
STM(SynchronousTransfer M
ode:同期転送モード)通信方式によるSTM信号を
用いた場合にセル化規定される異なる伝達単位として、
ニューロN1及びN2にはTU(Tributary
Unit)−11,ニューロN3及びN4にはTU−
2,ニューロN5及びN6にはAU(Administ
rative Unit)−3を使用した場合の状態遷
移図を示したものである。
FIG. 5 shows an STM (Synchronous Transfer M) in the transmission unit mismatch detection apparatus.
ode: Synchronous transfer mode) As a different transmission unit defined as a cell when an STM signal according to a communication method is used,
The Neuro N1 and N2 have TUs (Tributary)
Unit) -11, TU- for Neuro N3 and N4
2, AU (Administist for Neuro N5 and N6
FIG. 6 is a state transition diagram when using a "rative unit" -3.

【0008】ここで、ニューロN1及びN2,ニューロ
N3及びN4,ニューロN5及びN6は、何れも異なる
伝達単位専用として用いられる。ニューロN1はニュー
ロN2からの一致状態への遷移W21によりTU−11伝
達単位一致状態となり、ニューロN2はニューロN1か
らの不一致状態への遷移W12によりTU−11伝達単位
不一致状態となる。又、ニューロN3はニューロN4か
らの一致状態への遷移W43によりTU−2伝達単位一致
状態となり、ニューロN4はニューロN3からの不一致
状態への遷移W34によりTU−2伝達単位不一致状態と
なる。更に、ニューロN5はニューロN6からの一致状
態への遷移W65によりAU−3伝達単位一致状態とな
り、ニューロN6はニューロN5からの不一致状態への
遷移W56によりAU−3伝達単位不一致状態となる。
Here, the neuros N1 and N2, the neuros N3 and N4, and the neuros N5 and N6 are used exclusively for different transmission units. Neuro N1 becomes TU-11 transmission units consistent state by transition W 21 to match the state of the neuro N2, neuro N2 becomes TU-11 transmission units mismatch condition by a transition W 12 to mismatch condition from neuro N1. Moreover, neuro N3 becomes TU-2 transmission unit matching state by transition W 43 to match the state of the neuro N4, neuro N4 becomes TU-2 transmission unit mismatch condition by a transition W 34 to mismatch condition from neuro N3 . Moreover, neuro N5 becomes AU-3 transmission units match state by transition W 65 to match the state of the neuro N6, neuro N6 becomes AU-3 transfer unit mismatch condition by a transition W 56 to mismatch condition from neuro N5 .

【0009】即ち、この状態遷移においては、設定伝達
単位と受信伝達単位との比較結果に応じて同一設定伝達
単位に属する一致状態と不一致状態との間を遷移する。
伝達単位が不一致状態となると、装置外部に対して伝達
単位不一致警報を発出し、保守者に異常を通知する。
That is, in this state transition, a transition is made between the matching state and the non-matching state belonging to the same setting transmission unit according to the comparison result of the setting transmission unit and the reception transmission unit.
When the transmission units become inconsistent, a transmission unit inconsistency alarm is issued to the outside of the device to notify the maintenance person of the abnormality.

【0010】[0010]

【発明が解決しようとする課題】上述した従来の伝達単
位不一致検出装置では、受信されるセルからの受信伝達
単位情報と装置外部からの設定伝達単位情報とを比較し
た結果による不一致状態を装置内部で保持している。こ
のため、誤った設定伝達単位情報が設定された場合、こ
れを正しい設定伝達単位情報に訂正するためには、保守
者が試行錯誤を繰り返しながら設定伝達単位情報を更新
する必要がある。
SUMMARY OF THE INVENTION In the above-described conventional transmission unit mismatch detection apparatus, the mismatch state resulting from the comparison between the received transmission unit information from the received cell and the set transmission unit information from the outside of the apparatus is detected inside the apparatus. Holding in. Therefore, when incorrect setting transfer unit information is set, in order to correct it to the correct setting transfer unit information, the maintenance person needs to update the setting transfer unit information by repeating trial and error.

【0011】ところが、このときの試行錯誤は最悪の場
合、装置で取り扱っている全ての伝達単位の種類から1
を引いた回数分の試行が必要となる。このように、従来
の伝達単位不一致検出機能では設定伝達単位情報が誤設
定されると、簡単に訂正を行い得ないという問題があ
る。
However, in the worst case, the trial and error at this time is 1 from all kinds of transmission units handled by the device.
Trials are required for the number of times. As described above, the conventional transmission unit mismatch detection function has a problem that if the set transmission unit information is erroneously set, it cannot be easily corrected.

【0012】本発明は、かかる問題点を解決すべくなさ
れたもので、その技術的課題は、装置外部により設定指
示されるユーザ情報の信号速度を表わす設定伝達単位情
報が誤設定されても、この誤設定の訂正が簡単であり、
実際にセル化されているユーザ情報の信号速度を表わす
受信伝達単位情報と正しい設定伝達単位情報との間の不
一致を適確に検出し得る伝達単位不一致検出方式,及び
伝達単位不一致検出装置を提供することにある。
The present invention has been made to solve the above problems, and its technical problem is that even if the setting transmission unit information indicating the signal speed of the user information set and instructed by the outside of the apparatus is erroneously set. It's easy to correct this misconfiguration,
Provided are a transmission unit mismatch detection method and a transmission unit mismatch detection device capable of accurately detecting a mismatch between reception transmission unit information indicating the signal speed of user information that is actually made into cells and correct setting transmission unit information. To do.

【0013】[0013]

【課題を解決するための手段】本発明によれば、信号速
度の異なる複数のユーザ情報と該複数のユーザ情報のそ
れぞれの信号速度を表わす伝達単位情報とをセル化して
伝送するATM通信方式に適用される伝達単位不一致検
出方式おいて、受信されたセルから伝達単位情報の有効
性を判定し、該判定の結果により該伝達単位情報を受信
伝達単位情報として取り込んで保持した後、外部から設
定指示される設定伝達単位情報と該受信伝達単位情報と
を比較した結果に基づいて伝達単位不一致を検出する伝
達単位不一致検出方式が得られる。
According to the present invention, there is provided an ATM communication system for transmitting a plurality of user information having different signal speeds and transmission unit information representing the respective signal speeds of the plurality of user information in cells. In the applied transmission unit mismatch detection method, the validity of the transmission unit information is determined from the received cell, the transmission unit information is fetched and held as the reception transmission unit information according to the result of the determination, and then set from the outside. A transmission unit mismatch detection method for detecting a transmission unit mismatch based on the result of comparing the instructed set transmission unit information and the received transmission unit information is obtained.

【0014】又、本発明によれば、上記伝達単位不一致
検出方式において、更に、内部に伝達される装置内伝達
単位情報を取り込み保持し、受信伝達単位情報及び該装
置内伝達単位情報を比較した結果と、設定伝達単位情報
と該受信伝達単位情報又は該装置内伝達単位情報とを比
較した結果との両方に基づいて伝達単位不一致を検出す
る伝達単位不一致検出方式が得られる。
Further, according to the present invention, in the above-mentioned transmission unit mismatch detection method, further, the transmission unit information in the device transmitted internally is stored and the received transmission unit information is compared with the transmission unit information in the device. A transfer unit mismatch detection method for detecting a transfer unit mismatch based on both the result and the result of comparing the set transfer unit information with the received transfer unit information or the in-device transfer unit information is obtained.

【0015】一方、本発明によれば、信号速度の異なる
複数のユーザ情報と該複数のユーザ情報のそれぞれの信
号速度を表わす伝達単位情報とをセル化して伝送するた
めのATM通信装置において、受信されたセルから伝達
単位情報の有効性を判定する判定手段と、判定の結果に
応じて伝達単位情報を受信伝達単位情報として装置内部
に取り込んで保持する保持手段と、装置外部から設定指
示される設定伝達単位情報と受信伝達単位情報とを比較
する比較手段とを含む伝達単位不一致検出装置が得られ
る。
On the other hand, according to the present invention, an ATM communication device for transmitting a plurality of user information having different signal speeds and transmission unit information representing the respective signal speeds of the plurality of user information in cells is received. Determination means for determining the validity of the transmission unit information from the stored cell, holding means for receiving and holding the transmission unit information as reception transmission unit information in the device according to the result of the determination, and setting instruction from outside the device It is possible to obtain a transmission unit mismatch detection device including a comparison unit that compares the set transmission unit information with the reception transmission unit information.

【0016】更に、本発明によれば、上記伝達単位不一
致検出装置において、更に、装置内部に伝達される装置
内伝達単位情報と受信伝達単位情報との何れか一方を取
り込み保持する装置内伝達単位保持手段と、受信伝達単
位情報及び装置内伝達単位情報を比較する装置内伝達単
位比較手段と、設定伝達単位情報と受信伝達単位情報又
は装置内伝達単位情報とを比較する装置内設定伝達単位
比較手段と、両方の比較結果に基づいて伝達単位不一致
を検出する伝達単位不一致検出手段とを含む伝達単位不
一致検出装置が得られる。
Further, according to the present invention, in the above-mentioned transmission unit mismatch detecting device, further, an intra-device transmission unit for taking in and holding either one of the intra-device transmission unit information transmitted to the inside of the device and the reception transmission unit information. Holding means, in-apparatus transfer unit comparison means for comparing the received transfer unit information and in-apparatus transfer unit information, and in-apparatus set transfer unit comparison for comparing set transfer unit information with received transfer unit information or in-apparatus transfer unit information It is possible to obtain a transmission unit mismatch detection device including means and transmission unit mismatch detection means for detecting a transmission unit mismatch based on the comparison results of both.

【0017】[0017]

【実施例】以下に実施例を挙げ、本発明の伝達単位不一
致検出方式及び伝達単位不一致検出装置とについて、図
面を参照して詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a detailed description of the transmission unit mismatch detection method and the transmission unit mismatch detection device of the present invention with reference to the drawings.

【0018】最初に、本発明の伝達単位不一致検出方式
の概要を簡単に説明する。この伝達単位不一致検出方式
は、信号速度の異なる複数のユーザ情報とこれら複数の
ユーザ情報のそれぞれの信号速度を表わす伝達単位情報
とをセル化して伝送するATM通信方式に適用されるも
ので、受信されたセルから伝達単位情報の有効性を判定
し、この判定結果により伝達単位情報を受信伝達単位情
報として取り込んで保持した後、外部から設定指示され
る設定伝達単位情報と受信伝達単位情報とを比較した結
果に基づいて伝達単位不一致を検出するものである。
First, the outline of the transmission unit mismatch detection method of the present invention will be briefly described. This transmission unit mismatch detection method is applied to an ATM communication method in which a plurality of user information having different signal speeds and transmission unit information indicating the respective signal speeds of the plurality of user information are cellized and transmitted. The validity of the transmission unit information is determined from the stored cell, the transmission unit information is fetched and held as the reception transmission unit information based on this determination result, and then the setting transmission unit information set by the outside and the reception transmission unit information are set. The transmission unit mismatch is detected based on the comparison result.

【0019】但し、ここで更に、内部に伝達される装置
内伝達単位情報を取り込み保持し、受信伝達単位情報及
び装置内伝達単位情報を比較した結果と、設定伝達単位
情報と受信伝達単位情報又は装置内伝達単位情報とを比
較した結果との両方に基づいて伝達単位不一致を検出す
れば一層適確に不一致検出を行うことができる。
However, here, further, the internal transfer unit information transferred inside is stored and held, and the result of comparison between the received transfer unit information and the internal transfer unit information, the set transfer unit information and the received transfer unit information or If the transmission unit mismatch is detected based on both the result of comparison with the in-apparatus transmission unit information, the mismatch can be detected more accurately.

【0020】図1は、この伝達単位不一致検出方式を適
用した本発明の一実施例に係る伝達単位不一致検出装置
の基本構成をブロック図により示したものである。
FIG. 1 is a block diagram showing the basic structure of a transmission unit mismatch detection apparatus according to an embodiment of the present invention to which this transmission unit mismatch detection method is applied.

【0021】この伝達単位不一致検出装置は、セルデー
タ信号aから伝達単位情報を受信伝達単位情報としてラ
ッチし、受信伝達単位信号αを送出するラッチ回路10
と、受信伝達単位信号αからの受信伝達単位情報が有効
な値か否かを判定する適性判定回路20と、受信伝達単
位信号αに基づいて前回の受信伝達単位情報と今回の受
信伝達単位情報との一致を判定する受信判定回路30
と、その判定結果による連続的な一致性を判定する一致
性判定回路31とを備えている。
This transmission unit mismatch detection device latches transmission unit information from the cell data signal a as reception transmission unit information, and outputs a reception transmission unit signal α.
An aptitude determination circuit 20 for determining whether or not the reception transmission unit information from the reception transmission unit signal α is a valid value, and the previous reception transmission unit information and the current reception transmission unit information based on the reception transmission unit signal α. Reception determination circuit 30 for determining a match with
And a coincidence determination circuit 31 for determining continuous coincidence based on the determination result.

【0022】又、この伝達単位不一致検出装置は、装置
内部に伝達される装置内伝達単位信号dからの装置内伝
達単位情報と受信伝達単位信号αからの受信伝達単位情
報とを比較して伝達単位の不一致性を検出する比較検出
回路40と、その検出結果から不一致が連続する場合に
保護を指定する保護回路41と、装置内伝達単位信号d
からの装置内伝達単位情報と受信伝達単位信号αからの
受信伝達単位情報との何れか一方を選択する選択回路6
0と、これらの各伝達単位情報のうちの何れか一方を保
持する伝達単位保持回路61と、適性判定回路20,一
致性判定回路31,保護回路41からの出力に基づいて
装置内伝達単位情報の状態を決定し、選択回路60によ
る選択を指示する選択制御信号βを選択回路60へ出力
すると共に、伝達異常の場合には伝達単位異常信号γを
出力する状態判定制御回路50とを備えている。
The transmission unit mismatch detection apparatus compares the transmission unit information in the apparatus from the transmission unit signal d in the apparatus transmitted to the inside of the apparatus with the reception transmission unit information from the reception transmission unit signal α and transmits the information. A comparison / detection circuit 40 that detects unit inconsistency, a protection circuit 41 that specifies protection when the inconsistencies continue from the detection result, and an intra-device transmission unit signal d
A selection circuit 6 for selecting one of the in-apparatus transmission unit information from the device and the reception transmission unit information from the reception transmission unit signal α.
0, the transmission unit holding circuit 61 that holds any one of these pieces of transmission unit information, and the intra-apparatus transmission unit information based on the outputs from the suitability determination circuit 20, the conformity determination circuit 31, and the protection circuit 41. And a state determination control circuit 50 that outputs a selection control signal β for instructing selection by the selection circuit 60 to the selection circuit 60, and outputs a transmission unit abnormality signal γ in the case of transmission abnormality. There is.

【0023】更に、この伝達単位不一致検出装置は、設
定伝達単位信号bからの設定伝達単位情報と装置内伝達
単位信号dからの装置内伝達単位情報,又は受信伝達単
位信号αからの受信伝達単位情報とを比較した結果に基
づいて装置内の伝達単位不一致を示す伝達単位不一致信
号δを出力する設定伝達単位比較回路70と、伝達単位
異常信号γと伝達単位不一致信号δとの論理和から伝達
単位不一致警報信号cを出力する論理和ゲート80とを
備えている。
Further, the transmission unit mismatch detection device is configured such that the setting transmission unit information from the setting transmission unit signal b and the in-device transmission unit information from the in-device transmission unit signal d, or the reception transmission unit from the reception transmission unit signal α. Based on the result of comparison with the information, the set transmission unit comparison circuit 70 that outputs the transmission unit mismatch signal δ indicating the transmission unit mismatch in the device, and the transmission unit abnormality signal γ and the transmission unit mismatch signal δ are transmitted from the logical sum. And a logical sum gate 80 for outputting a unit mismatch warning signal c.

【0024】この伝達単位不一致検出装置において、伝
達単位保持回路61は装置内部に伝達される装置内伝達
単位情報と受信伝達単位情報との何れか一方を取り込み
保持する装置内伝達単位保持手段として機能する。又、
比較検出回路40は、受信伝達単位情報及び装置内伝達
単位情報を比較する装置内伝達単位比較手段として機能
する。更に、設定伝達単位比較回路70は設定伝達単位
情報と受信伝達単位情報又は装置内伝達単位情報とを比
較する装置内設定伝達単位比較手段として機能する。加
えて、論理和ゲート80は上述した両方の比較結果に基
づいて伝達単位不一致を検出する伝達単位不一致検出手
段として機能する。
In this transmission unit mismatch detection device, the transmission unit holding circuit 61 functions as an in-device transmission unit holding means for taking in and holding either one of the in-device transmission unit information transmitted to the inside of the device and the received transmission unit information. To do. or,
The comparison / detection circuit 40 functions as an intra-apparatus transfer unit comparing means for comparing the received transfer unit information and the intra-apparatus transfer unit information. Further, the setting transfer unit comparing circuit 70 functions as an in-device setting transfer unit comparing means for comparing the setting transfer unit information with the received transfer unit information or the in-device transfer unit information. In addition, the OR gate 80 functions as a transmission unit mismatch detecting means for detecting a transmission unit mismatch based on both the comparison results described above.

【0025】即ち、この伝達単位不一致検出装置ではセ
ルを受信すると、このセルからラッチした受信伝達単位
情報とセルの受信前に保持していた装置内伝達単位情報
とから次の装置内伝達単位情報を決定する。装置内伝達
単位情報の更新は、受信伝達単位情報が所要の保護段数
分連続一致となった場合に、その受信伝達単位情報を取
り込むことにより行う。尚、この伝達単位不一致検出装
置では、誤った設定伝達単位情報が設定されると、その
設定伝達単位情報が装置内伝達単位情報として装置内に
保持されるため、保守者に対してその誤った設定伝達単
位情報を通知することができる。
That is, when this transmission unit mismatch detection device receives a cell, the next transmission unit information in the device is determined from the reception transmission unit information latched from this cell and the in-device transmission unit information held before the reception of the cell. To decide. The intra-apparatus transmission unit information is updated by fetching the reception transmission unit information when the reception transmission unit information is continuously matched by the required number of protection steps. In this transmission unit inconsistency detection device, when incorrect setting transmission unit information is set, the setting transmission unit information is held in the device as in-device transmission unit information. The setting transmission unit information can be notified.

【0026】図2は、この伝達単位不一致検出装置内で
STM通信方式によるSTM信号を用いた場合にセル化
規定される異なる伝達単位として、ニューロN2にはT
U−11,ニューロN3にはTU−2,ニューロN4に
はAU3を使用し、ニューロN1を伝達単位異常状態用
とした場合の状態遷移図を示したものである。
FIG. 2 shows T as a different transmission unit which is defined as cellization when an STM signal according to the STM communication system is used in this transmission unit mismatch detection apparatus.
FIG. 7 is a state transition diagram when TU-2 is used for U-11, neuro N3, and AU3 is used for neuro N4, and neuro N1 is used for a transmission unit abnormal state.

【0027】ここで、各ニューロN1〜N4のうち、ニ
ューロN1は他のニューロN2,N3,N4からのそれ
ぞれ伝達単位異常状態への遷移W21,W31,W41により
装置内伝達単位情報と受信伝達単位情報との連続不一致
性に基づいて異常状態となる。因みに、ニューロN2は
ニューロN1,N2,N3からのそれぞれのTU−11
正常状態への遷移W12,W32,W42によりTU−11伝
達単位を連続的に受信し、ニューロN3はニューロN
1,N2,N4からのそれぞれのTU−2正常状態への
遷移W13,W23,W43によりTU−2伝達単位を連続的
に受信する。又、ニューロN4はニューロN1,N2,
N3からのそれぞれのAU−3正常状態への遷移W14
24,W34によりAU−3伝達単位を連続的に受信す
る。
[0027] Here, among the neuro N1-N4, neuro N1 is a device transmitting information units by a transition W 21, W 31, W 41 to the respective transmission units abnormal condition from the other neuro N2, N3, N4 An abnormal state occurs based on the continuous inconsistency with the reception transmission unit information. Incidentally, the neuro N2 is the TU-11 from each of the neuros N1, N2 and N3.
The TU-11 transmission unit is continuously received by the transitions W 12 , W 32 , and W 42 to the normal state, and the neuro N3 is the neuro N.
TU-2 transmission units are continuously received by the transitions W 13 , W 23 , W 43 from 1, N 2, N 4 to the respective TU-2 normal states. Also, the neuro N4 is the neuro N1, N2,
Transition W 14 from N 3 to each AU-3 normal state,
Continuously receiving the AU-3 transmission units by W 24, W 34.

【0028】この状態遷移において、装置内伝達単位情
報の状態はニューロN2,N3,N4の何れか1つの正
常状態へ遷移する。又、受信伝達単位情報が未定義の値
(無効値)になったり、或いは有効値であっても装置内
伝達単位情報とは異なる値となることが所要の保護段数
分起きた場合、伝達単位異常状態へ遷移する。更に、装
置内伝達単位情報と設定伝達単位情報が不一致となった
場合と、伝達単位異常状態となった場合には、装置外部
に対して伝達単位不一致警報を発出し、保守者に異常を
通知する。
In this state transition, the state of the in-apparatus transmission unit information transits to any one of the normal states of the neuros N2, N3 and N4. In addition, if the required number of protection steps occurs that the received transmission unit information becomes an undefined value (invalid value), or even if it is a valid value, it becomes a value different from the in-device transmission unit information, the transmission unit Transition to an abnormal state. Furthermore, if the in-apparatus transmission unit information does not match the set transmission unit information, or if there is a transmission unit abnormal state, a transmission unit mismatch alarm is issued to the outside of the device to notify the maintenance person of the abnormality. To do.

【0029】[0029]

【発明の効果】以上に説明したように、本発明の伝達単
位不一致検出方式及び伝達単位不一致検出装置によれ
ば、設定伝達単位情報が誤って設定された場合、従来の
ように不一致警報を検出するだけでなく、その設定伝達
単位情報が装置内伝達単位情報として装置内に保持され
るため、保守者に対してその誤った設定伝達単位情報を
通知することができるようになる。これにより、保守者
は誤った設定伝達単位情報を読み出し、訂正すべき設定
伝達単位情報の値を簡便に知り、速やかに訂正を行うこ
とができるので、実際にセル化されているユーザ情報の
信号速度を表わす受信伝達単位情報と正しい設定伝達単
位情報との間で不一致を適確に検出し得るようになる。
As described above, according to the transmission unit inconsistency detection method and the transmission unit inconsistency detection device of the present invention, when the set transmission unit information is erroneously set, the inconsistency alarm is detected as in the conventional case. In addition, since the setting transmission unit information is held in the apparatus as the intra-apparatus transmission unit information, it becomes possible to notify the maintenance person of the incorrect setting transmission unit information. As a result, the maintenance person can read the wrong setting transmission unit information, easily know the value of the setting transmission unit information to be corrected, and perform the correction promptly, so that the signal of the user information actually cellized can be obtained. This makes it possible to accurately detect a mismatch between the reception transmission unit information indicating the speed and the correct setting transmission unit information.

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

【図1】本発明の一実施例に係る伝達単位不一致検出装
置の基本構成を示したブロック図である。
FIG. 1 is a block diagram showing a basic configuration of a transmission unit mismatch detection device according to an exemplary embodiment of the present invention.

【図2】図1に示す伝達単位不一致検出装置内の状態遷
移図を示したものである。
FIG. 2 is a state transition diagram in the transmission unit mismatch detection device shown in FIG.

【図3】従来の伝達単位不一致検出方式に関し、ヘッダ
に受信伝達単位情報が挿入されたセルフォーマットの一
例を示したものである。
FIG. 3 is a diagram showing an example of a cell format in which reception transmission unit information is inserted in a header in the conventional transmission unit mismatch detection method.

【図4】従来の伝達単位不一致検出装置の基本構成を示
したブロック図である。
FIG. 4 is a block diagram showing a basic configuration of a conventional transmission unit mismatch detection device.

【図5】図4に示す伝達単位不一致検出装置内の状態遷
移図を示したものである。
5 is a state transition diagram in the transmission unit mismatch detection device shown in FIG.

【符号の説明】[Explanation of symbols]

1,10 ラッチ回路 2 比較回路 3 前方/後方保護処理回路 20 適性判定回路 30 受信判定回路 31 一致性判定回路 40 比較検出回路 41 保護回路 50 状態判定制御回路 60 選択回路 61 伝達単位保持回路 70 設定伝達単位比較回路 80 論理和ゲート N1〜N6 ニューロ 1, 10 Latch circuit 2 Comparison circuit 3 Front / rear protection processing circuit 20 Suitability determination circuit 30 Reception determination circuit 31 Consistency determination circuit 40 Comparison detection circuit 41 Protection circuit 50 State determination control circuit 60 Selection circuit 61 Transmission unit holding circuit 70 Setting Transmission unit comparison circuit 80 OR gates N1 to N6 Neuro

───────────────────────────────────────────────────── フロントページの続き (72)発明者 上松 仁 東京都千代田区内幸町一丁目1番6号 日 本電信電話株式会社内 (72)発明者 上田 裕巳 東京都千代田区内幸町一丁目1番6号 日 本電信電話株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hitoshi Uematsu 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corp. (72) Hiromi Ueda 1-1-6 Uchisai-cho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 信号速度の異なる複数のユーザ情報と該
複数のユーザ情報のそれぞれの信号速度を表わす伝達単
位情報とをセル化して伝送するATM通信方式に適用さ
れる伝達単位不一致検出方式おいて、受信されたセルか
ら前記伝達単位情報の有効性を判定し、該判定の結果に
より該伝達単位情報を受信伝達単位情報として取り込ん
で保持した後、外部から設定指示される設定伝達単位情
報と該受信伝達単位情報とを比較した結果に基づいて伝
達単位不一致を検出することを特徴とする伝達単位不一
致検出方式。
1. A transmission unit mismatch detection method applied to an ATM communication system for transmitting a plurality of user information having different signal speeds and transmission unit information representing each signal speed of the plurality of user information in cells. , Determining the validity of the transmission unit information from the received cell, fetching and holding the transmission unit information as reception transmission unit information according to the result of the determination, A transmission unit mismatch detection method characterized by detecting a transmission unit mismatch based on a result of comparison with received transmission unit information.
【請求項2】 請求項1記載の伝達単位不一致検出方式
において、更に、内部に伝達される装置内伝達単位情報
を取り込み保持し、前記受信伝達単位情報及び該装置内
伝達単位情報を比較した結果と、前記設定伝達単位情報
と該受信伝達単位情報又は該装置内伝達単位情報とを比
較した結果との両方に基づいて伝達単位不一致を検出す
ることを特徴とする伝達単位不一致検出方式。
2. The transmission unit mismatch detection method according to claim 1, further comprising: capturing and holding in-device transmission unit information transmitted internally, and comparing the received transmission unit information and the in-device transmission unit information. And a transmission unit mismatch detection method, which detects a transmission unit mismatch based on both the set transmission unit information and the result of comparing the received transmission unit information or the intra-device transmission unit information.
【請求項3】 信号速度の異なる複数のユーザ情報と該
複数のユーザ情報のそれぞれの信号速度を表わす伝達単
位情報とをセル化して伝送するためのATM通信装置に
おいて、受信されたセルから前記伝達単位情報の有効性
を判定する判定手段と、前記判定の結果に応じて前記伝
達単位情報を受信伝達単位情報として装置内部に取り込
んで保持する保持手段と、装置外部から設定指示される
設定伝達単位情報と前記受信伝達単位情報とを比較する
比較手段とを含むことを特徴とする伝達単位不一致検出
装置。
3. An ATM communication device for converting a plurality of user information having different signal speeds and transfer unit information indicating each signal speed of the plurality of user information into cells and transmitting the cells from the received cells. A determination unit that determines the validity of the unit information, a holding unit that captures and holds the transmission unit information as reception transmission unit information in the device according to the result of the determination, and a setting transmission unit that is instructed to be set from outside the device. A transmission unit disagreement detection device comprising: a comparison unit for comparing information with the reception transmission unit information.
【請求項4】 請求項3記載の伝達単位不一致検出装置
において、更に、装置内部に伝達される装置内伝達単位
情報と前記受信伝達単位情報との何れか一方を取り込み
保持する装置内伝達単位保持手段と、前記受信伝達単位
情報及び前記装置内伝達単位情報を比較する装置内伝達
単位比較手段と、前記設定伝達単位情報と前記受信伝達
単位情報又は前記装置内伝達単位情報とを比較する装置
内設定伝達単位比較手段と、前記両方の比較結果に基づ
いて伝達単位不一致を検出する伝達単位不一致検出手段
とを含むことを特徴とする伝達単位不一致検出装置。
4. The transmission unit mismatch detection device according to claim 3, further comprising: an internal transmission unit holding device for taking in and holding either one of the internal transmission unit information transmitted inside the device and said reception transmission unit information. Means, an intra-apparatus transfer unit comparing means for comparing the received transfer unit information and the intra-apparatus transfer unit information, and an apparatus for comparing the set transfer unit information with the received transfer unit information or the intra-apparatus transfer unit information A transmission unit mismatch detection device comprising: setting transmission unit comparison means; and transmission unit mismatch detection means for detecting a transmission unit mismatch based on the comparison results of both.
JP6109471A 1994-05-24 1994-05-24 Transmission unit mismatch detection method and transmission unit mismatch detection device Expired - Lifetime JP2944420B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6109471A JP2944420B2 (en) 1994-05-24 1994-05-24 Transmission unit mismatch detection method and transmission unit mismatch detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6109471A JP2944420B2 (en) 1994-05-24 1994-05-24 Transmission unit mismatch detection method and transmission unit mismatch detection device

Publications (2)

Publication Number Publication Date
JPH07321802A true JPH07321802A (en) 1995-12-08
JP2944420B2 JP2944420B2 (en) 1999-09-06

Family

ID=14511083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6109471A Expired - Lifetime JP2944420B2 (en) 1994-05-24 1994-05-24 Transmission unit mismatch detection method and transmission unit mismatch detection device

Country Status (1)

Country Link
JP (1) JP2944420B2 (en)

Also Published As

Publication number Publication date
JP2944420B2 (en) 1999-09-06

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