JP3699049B2

JP3699049B2 - Duplex transmission equipment

Info

Publication number: JP3699049B2
Application number: JP2002018763A
Authority: JP
Inventors: 正孝今野
Original assignee: NEC Communication Systems Ltd
Current assignee: NEC Communication Systems Ltd
Priority date: 2002-01-28
Filing date: 2002-01-28
Publication date: 2005-09-28
Anticipated expiration: 2022-01-28
Also published as: JP2003218744A

Description

【０００１】
【発明の属する技術分野】
本発明は二重化伝送装置に関し、特に共通の切替制御装置を有しない二重化伝送装置に関する。
【０００２】
【従来の技術】
この種の従来の技術について図面を参照して説明する。
【０００３】
図６は従来の二重化装置の一例を示すブロック図である。
【０００４】
図６において、この従来の二重化装置は、特開昭５９−２００５６号公報の開示内容を示し、二重化されたユニット１０１，１０２のいずれかに障害が発生した時、相手ユニットの障害監視用回路が障害情報ライン２０３，２０５を介して互いに相手方のユニットに障害が発生したこと及びその程度を自己のユニット１０１又は１０２に伝送するとともに、相手方のユニットが現在、現用状態であるか予備状態であるかを状態情報ライン２０４，２０６を介して自己のユニット１０１又は１０２に伝送する。そしてそれぞれの自己のユニット内で障害検出用回路が検出する自己ユニットの障害発生及びその程度の大小、状態及び相手のユニットの障害発生及びその程度の大小、状態の４種類の情報を基にして障害発生及び障害程度を判断して、自己ユニットを動作状態又は非動作状態のいずれかにするかを決定する。この場合、両ユニットの決定が一致したときには以下のように処置する。
【０００５】
すなわち、両ユニット共に動作状態にすることを決定する場合（両ユニット共に正常の場合）は先に決定した方を優先する。また、両ユニット共に非動作状態にすることを決定する場合（両ユニット共に障害の場合）は、予めそれぞれのユニットに優先順位を設定しておき、その情報と前記４つの情報により正常ユニットは動作状態にすることを決定し、異常ユニットは非動作状態にすることを決定するように設定されており、動作状態にすることを決定したユニットが現用ユニットになり、非動作状態にすることを決定したユニットが予備ユニットになる。つまり本従来の技術においては前述した両回路から発する制御指令で障害発生及び障害程度を判定して両ユニット間で、両ユニット共に正常ならば、現在の状態を維持し、どちらか一方が障害を起せば、正常なユニットを現用ユニットに設定し、異常ユニットを予備にし、又両ユニットが障害になれば予め設定された条件のもとでの正常ユニットを現用ユニットに設定し異常ユニットを予備にする。
【０００６】
【発明が解決しようとする課題】
この従来例の二重化装置は、両ユニットに障害監視回路を有して、両ユニットで障害監視を行っているので、片方の障害監視回路に故障が発生した場合、切替制御ができなくなるという問題点がある。
【０００７】
また、両ユニットの障害監視回路が共に動作しているので、どちらの命令を優先させるかの処理が必要になるという問題点がある。更に、二重化以上のＮ（Ｎ≧３の整数）重化への対応を考えた場合に、Ｎ個の障害監視回路が存在するため、その優先処理が複雑になるという問題点がある。
【０００８】
（発明の目的）
本発明の目的は、二重化されたそれぞれの伝送装置に、独立して現用、予備の設定できる切替制御手段を有して、システム全体を小型化すると共に、障害に対するシステムの信頼性を高めた二重化伝送装置を提供することにある。
【０００９】
【課題を解決するための手段】
本発明の二重化伝送装置は、第１の伝送装置と第２の伝送装置とからなる二重化伝送装置において、前記第１の伝送装置内に前記第１の伝送装置内の状態及び伝送路の状態を監視する第１の切替制御手段を備え、前記第２の伝送装置内の前記第２の伝送装置内の状態及び伝送路の状態を監視する第２の切替制御手段を備え、
前記第１の切替制御手段及び第２の切替制御手段のそれぞれは、前記第１の伝送装置及び前記第２の伝送装置とは独立に現用又は予備に設定する設定手段を有し、また現用設定されている切替制御手段は自己の前記切替制御手段を収容している伝送装置内の状態の前記監視の結果異常を検出すると、前記設定手段の基に、現用に設定されている切替制御手段が他の切替制御手段を制御して、前記第１の伝送装置及び前記第２の伝送装置に対する現状の現用／予備の切替えを指示する切替信号を送出する切替信号送出手段を有している。
【００１０】
本発明の二重化伝送装置は、第１の伝送装置と第２の伝送装置とからなる二重化伝送装置において、前記第１の伝送装置内に前記第１の伝送装置内の状態及び伝送路の状態を監視する第１の切替制御手段を備え、前記第２の伝送装置内に前記第２の伝送装置内の状態及び伝送路の状態を監視する第２の切替制御手段を備え、
前記第１の切替制御手段及び前記第２の切替制御手段のそれぞれは、前記第１及び第２の伝送装置とは独立に現用か又は予備かを設定する第１の設定手段を有して、自己の切替制御手段を収容する自伝送装置が現用に設定されている場合には前記監視の結果異常を検出すると、前記自伝送装置に対して現用から予備への切替えを指示する自装置切替制御信号を、また、他の切替制御手段に対して予備から現用への切替えを指示する第１の切替制御信号を出力する切替判定部と、
前記第１の設定手段と同様に現用か又は予備かを設定する第２の設定手段を示し、前記自伝送装置が現用に設定されていて前記監視の結果異常を検出すると、前記第２の設定手段によって切替権利判定結果信号を出力する切替権利判定部と、
前記第１及び第２の設定手段２同様に自己に対する現用か又は予備かを設定すると共に前記第１及び第２の伝送装置の既に設定されている状態の現用か予備かを設定する第３の設定手段を有し、前記第３の設定手段によって前記自伝送装置が現用に設定されている場合には、前記自装置切替制御信号を受信し且つ前記現用であることを示す切替権利判定結果信号を受信して前記自伝送装置に対し現用から予備への切替えを指示する第１の切替信号を出力し、
前記自伝送装置が予備に設定されている場合には、他の切替制御手段からの予備から現用への切替制御信号を受信して予備の前記自伝送装置を予備から現用への切替えを指示する第２の切替信号を出力する切替制御信号選択部とを有している。
【００１１】
本発明の二重化伝送装置は、第１の伝送装置と第２の伝送装置とからなる二重化伝送装置において、前記第１の伝送装置内に前記第１の伝送装置内の状態及び伝送路の状態を監視する第１の切替制御手段を備え、前記第２の伝送装置内に前記第２の伝送装置内の状態及び伝送路の状態を監視する第２の切替制御手段を備え、
前記第１の切替制御手段及び前記第２の切替制御手段のそれぞれは、前記第１及び第２の伝送装置とは独立に現用か又は予備かを設定する第１の設定手段とを有し、この第１の設定手段によって現用に設定されている場合に、自己の切替制御手段を収容する自伝送装置が現用に設定されていて前記監視の結果異常を検出すると、前記自伝送装置に対して現用から予備への切替を指示する自装置切替制御信号を、また、他の切替制御手段に対して予備から現用への切替えを指示する切替制御信号を出力する切替判定部と、
前記第１の設定手段と同様に現用か又は予備かを設定する第２の設定手段を有し、前記第２の設定手段に前記第１の設定手段と同一に現用にされている場合に、前記自伝送装置が現用に設定されていて前記監視の結果異常を検出すると、現用であることを示す第１の切替権利判定結果信号を出力する切替権利判定部と、前記第１及び第２の設定手段２同様に自己に対する現用か又は予備かを設定すると共に、前記第１及び第２の伝送装置の既に設定されている状態の現用か予備かを設定する第３の設定手段と、前記第３の設定手段によって前記自伝送装置及び自己が現用に設定されている場合に、前記自装置切替制御信号を受信し且つ前記現用であることを示す第１の切替権利判定結果信号を受信していると自伝送装置に対し現用から予備への切替えを指示する第１の切替信号を出力する切替制御信号選択部とを有し、前記自伝送装置が予備に設定され且つ前記切替判定部、切替権利判定部及び切替制御信号選択部が予備に設定されている場合に、前記切替制御信号選択部は、他の切替制御手段が現用の自伝送装置の異常の検出の結果によって送出する前記他の切替制御手段内の他の切替判定部から送出する予備から現用への切替えを指示する第２の切替制御信号を受信し且つ前記切替権利判定部からの予備であることを示す第２の切替権利判定結果信号によって予備の前記自伝送装置に対して予備から現用への切替えを示す第２の切替信号を出力し、前記自伝送装置が現用に設定され、且つ、前記切替判定部、切替権利判定部及び切替制御選択部が予備に設定されている場合に前記切替判定部は前記自伝送装置の前記監視の結果異常を検出すると前記自装置切替制御信号を、また、他の切替制御手段に対して前記第１の切替制御信号を出力し、
前記切替権利判定部は予備であることを示す前記第２の切替権利判定結果信号を出力し、
前記切替制御信号選択部は前記自装置切替制御信号と前記第２の切替権利判定結果信号を受信すると前記第１の切替信号を出力し、前記自伝送装置が予備に設定され、且つ前記切替判定部、切替権利判定部及び切替制御信号選択部が現用に設定されている場合に、前記切替制御信号選択部は、他の切替制御手段が現用の自伝送装置の異常の検出の結果によって送出する前記他の切替制御手段内の他の切替判定部から送出する予備から現用への切替を指示する前記第２の切替制御信号を受信し且つ前記切替権利判定部からの予備であることを示す前記第２の切替権利判定結号信号によって予備の前記自伝送装置に対して予備から現用への切替えを示す前記第２の切替信号を出力する。
【００１２】
【発明の実施の形態】
次に、本発明について図面を参照にして説明する。
【００１３】
図１は本発明の一実施の形態の二重化伝送装置を示すブロック図である。
【００１４】
図１においては、本実施の形態の二重化伝送装置は予め設定された現用側の伝送装置１と、予備側の伝送装置２とからなり、伝送装置１は伝送装置１の現用設定とは独立に、現用又は予備の可変設定が可能な切替制御部１１を備え、同様に、伝送装置２には、伝送装置２の予備設定とは独立に、切替制御部１１とは反対に予備又は現用の可変設定が可能な切替制御部２１とを備え、切替制御部１１は現用設定されていると現用の伝送装置１内の障害等による切替判定情報ａ₁₁を受信すると自伝送装置１内に対して現用から予備への切替信号ａ₁₂を出力すると共に、予備に設定されている他伝送装置２の切替制御部２１に対して予備から現用への切替制御信号ａ₁を出力し、また、これとは反対に切替制御部２１は切替制御部１１と同様に、現用設定されていると、現用設定された自伝送装置２内の障害等による切替判定情報ｂ₂₁を受信すると、自伝送装置２内に対して現用から予備への切替信号ｂ₂₂を出力すると共に、予備設定されている他伝送装置１の切替制御部１１に対して予備から現用への切替制御信号ｂ₁を出力する。
【００１５】
図２は本実施の形態の二重化伝送装置における切替制御部を示すブロック図である。
【００１６】
図２において、本実施の形態の伝送装置１の切替制御部１１は、予め初期設定された現用か又は予備かの設定情報の基に、現用設定されている伝送装置１内の障害等の情報による切替判定情報ａ₁₁を受信すると自装置（伝送装置１）への切替制御信号ａ₁₃を切替制御信号選択部１１３へ送出する切替判定部１１１と、自伝送装置１を現用又は予備のどちらが予め初期設定され、伝送装置１内の障害等の情報により、切替権利判定情報ａ₁₄が入力され、予め初期設定された現用又は予備のどちらの切替権利判定結果信号ａ₁₅を切替制御選択部１１３へ送出する切替権利判定部１１２と、切替権利判定結果信号ａ₁₅の基に受信している自装置への切替制御信号ａ₁₃か又は他装置（伝送信号２）からの切替制御信号ｂ₁を受信して自装置（伝送装置）が現用か又は予備かによって自装置（伝送装置１）への現用から予備又は予備から現用への切替信号ａ₁₂を出力する切替制御信号選択部１１３とを有している。
【００１７】
尚、切替制御部２１においても、切替制御部１１と同様に、切替判定部２１１と、切替権利判定部２１２と、切替制御信号選択部２１３とを有している。
【００１８】
図３は図２に示す本実施の形態における切替制御部内の切替権利判定部の動作を示すフローチャートである。
【００１９】
次に、切替権利判定部１１２の動作について、図２，図３を参照して説明する。
【００２０】
図３において、先ず切替権利判定部１１２は、予め内部の設定入力手段によって、自伝送装置１とは独立に、自切替権利判定部１１２を現用か又は予備かに設定するコード情報を入力して記憶させておく（Ｓ１）。
【００２１】
次に、現用化されている自伝送装置１の内部からの障害情報等を切替権利判定情報（ａ₁₄）として受信した場合に、初期設定情報の基に、自切替制御部１１の自装置切替制御信号ａ₁₃を選択するか又は他切替制御部２１への切替制御信号を選択するか判断する（Ｓ２）。
【００２２】
初期設定の情報が現用に設定されている場合には、自切替制御部１１を選択すべく切替権利判定結果信号ａ₁₅を出力（Ｓ３）。もし、初期設定の情報が予備に設定されて且つ自伝送装置が予備の場合には、他切替制御部２１による他切替制御部からの切替制御部ｂ₁を選択するか判断する（Ｓ４）。
【００２３】
再度、初期設定の情報の共に予備に設定されていると、他切替制御部２１からの切替制御信号ｂ₁を選択すべく切替権利判定結果信号ａ₁₅を出力する（Ｓ５）。
【００２４】
図４は図２に示す本実施の形態における切替制御部内の切替判定部の動作を示すフローチャートである。
【００２５】
次に、切替判定部１１１の動作について、図２，図４を参照して説明する。
【００２６】
図４において、先ず、切替判定部１１１は、予め内部の設定入力手段によって、自伝送装置１とは独立して、自切替判定部１１を現用か又は予備かに設定するコード情報を入力して記憶させておく（Ｓ１１）。
【００２７】
次に、現用に設定されている場合の自伝送装置１の内部からの障害情報等を切替判定情報ａ₁₁として受信した場合に、初期設定情報の基に、自切替制御部１１の自装置への切替制御信号ａ₁₃を選択するか判断する（Ｓ１２）。
【００２８】
初期設定の情報が現用に設定されている場合には、自装置切替制御信号ａ₁₃及び他切替制御部への切替制御信号ａ₁を出力する（Ｓ３）。もし、初期設定の情報が予備に設定されていて且つ自伝送装置１が予備に設定されている場合には、自切替制御部１１への出力はなく、他切替制御部２１からの切替制御信号ｂ₁を選択するか判断する（Ｓ１４）。
【００２９】
再度、初期設定の情報の共に予備に設定されていると、他切替制御部２１からの切替制御部ｂ₁を選択する（Ｓ１５）。
【００３０】
図５は図２に示す本実施の形態における切替制御信号選択部の動作を示すフローチャートである。
【００３１】
次に、切替制御信号選択部１１３の動作について図２，図５を参照して説明する。
【００３２】
図５において、先ず、切替制御信号選択部１１３は、予め、内部の設定入力手段によって、自伝送装置１とは独立に、自切替制御信号選択部１１３を現用か又は予備かに設定するコード情報を入力して記憶させておく（Ｓ２１）。
【００３３】
次に、初期設定の情報及び切替権利判定結果信号ａ₁₅の基に、切替判定部１１１からの自装置への切替制御信号ａ₁₃を選択するか判断する（Ｓ２２）。
【００３４】
自装置及び自己の初期設定の情報及び切替権利判定結果信号ａ₁₅が現用に設定されている場合には、切替判定部１１１からの自装置への切替制御信号ａ₁₃を選択し、自装置（伝送装置１）への現用から予備への切替信号ａ₁₂として出力する（Ｓ２３）。
【００３５】
もし、自装置及び自己の初期設定の情報及び切替権利判定結果信号ａ₁₅が共に予備に設定されている場合には、切替判定部１１１からの自装置への切替制御信号ａ₁₃の受信はなく、切替制御部２１から出力される他切替制御部からの切替制御信号ｂ₁を選択するか判断する（Ｓ２４）。
【００３６】
他切替制御部２１からの切替制御信号ｂ₁を選択して受信すると、自装置（伝送装置１）への予備から現用に切替える切替信号ａ₁₂を出力する（Ｓ２５）。
【００３７】
以上、切替制御部１１内の切替判定部１１１，切替権利判定部１１２及び切替制御信号選択部１１３の動作について説明したが、切替制御部２１内の切替判定部２１１，切替権利判定部２１２及び切替制御信号選択部２１３も同様な動作を行うので、その説明を省略する。
【００３８】
次に、図１に示すシステム全体の切替動作について、図１〜図５を参照して説明する。
【００３９】
この切替動作の説明においては、伝送装置１が現用に、伝送装置２が予備に予め設定されていて、これとは独立に切替制御部１１が現用に、切替制御部２１が予備に設定している場合に、現用の伝送装置１内に障害が発生して現用から予備に切替える場合の動作について、以下に説明する。
【００４０】
この場合においては、切替制御部１１が現用として稼動しているため、切替判定部１１１，切替権利判定部１１２及び切替制御信号選択部１１３のそれぞれの初期設定は現用に予め設定されてあり、また切替判定部２１１，切替権利判定部２１２及び切替制御信号選択部２１３のそれぞれの初期設定は予備として予め設定されているものとする。
【００４１】
以上のように設定された図１に示すシステムにおいて、伝送装置１内に障害が発生すると、その障害情報が切替制御部１１の切替判定部１１１に対しては切替判定情報ａ₁₁として入力され、図４に示す動作によって自装置（伝送装置１）への切替制御信号ａ₁₃を出力し、また、他切替制御部２１に対して切替制御信号ａ₁を出力する。
【００４２】
また、切替権利判定部１１２は、障害情報を切替権利判定情報ａ₁₄として受信し、図３に示す動作によって、自切替制御部１１が現用であることを示す切替権利判定結果信号ａ₁₅を出力する。
【００４３】
切替制御信号選択部１１３においては、切替権利判定結果信号ａ₁₅の受信によって、受信している自装置への切替制御信号ａ₁₃を自装置（伝送装置１）への切替信号ａ₁₂として出力し、伝送装置１を現用から予備へ切替させる。
【００４４】
切替制御部２１側では、切替制御信号選択部２１３は、切替制御部１１の切替判定部１１１からの他切替制御部からの切替制御信号ａ₁を受信すると初期設定が予備に設定していることから、自装置（伝送装置２）への予備から現用に変るべく切替信号ｂ₁₂を出力する。
【００４５】
以上の結果、伝送装置１は予備に、伝送装置２は現用に切替る。
【００４６】
しかし、切替制御部１１は現用で、切替制御部２１は予備のままであり、それを変更するためには、切替制御部１１及び２１内のそれぞれの切替判定部１１１，２１１，切替権利判定部１１２，２１２及び切替制御信号選択部１１３，２１３の初期設定を変更する必要がある。
【００４７】
以上に示したように、本実施の形態においては、二重化された伝送装置１及び２とは独立に現用又は予備の変更が可能なそれぞれの装置内に切替制御部１１及び２１を備えることにより、従来より信頼性の高い切替制御を行うことができる。
【００４８】
また、切替制御部１１及び２１に対して、予め初期設定によって、現用又は予備に設定しているので、どちらの命令を優先させるかの優先処理をなくすことができる。
【００４９】
また、以上の実施の形態のおいては、二重化された伝送装置１及び２について説明したが、それぞれの装置内に独立に現用又は予備の設定ができる切替制御部を備えたＮ重化された伝送装置１，２・・・Ｎの構成も容易に構築するこができる。
【００５０】
【発明の効果】
以上説明したように本発明は、第１の伝送装置と第２の伝送装置とからなる二重化伝送装置において、第１の伝送装置内に第１の伝送装置内の状態及び伝送路の状態を監視する第１の切替制御手段を備え、第２の伝送装置内に第２の伝送装置内の状態及び伝送路の状態を監視する第２の切替制御手段を備え、第１の切替制御手段及び第２の切替制御手段のそれぞれは、第１の伝送装置及び第２の伝送装置とは独立に現用又は予備に設定する設定手段を有し、また現用設定されている自己の切替制御手段は自己の前記切替制御手段を収容している伝送装置内の状態の前記監視の結果異常を検出すると設定手段の基に現用に設定されている切替制御手段が他の切替制御手段を制御して、第１の伝送装置及び第２の伝送装置に対する現状の現用／予備の切替信号を送出する切替信号送出手段を有することにより、
第１に、第１および第２の伝送装置とは別に、これらの伝送装置を監視して切替えの制御を行う独立した切替制御装置を用意する必要がなくなり、システム全体を物理的に規模を小さくすることができる効果がある。
【００５１】
第２に、切替制御手段を各伝送装置に設けることにより、切替制御が分散され、二重化システムの信頼性を高めることができる効果がある。
【図面の簡単な説明】
【図１】本発明の一実施の形態の二重化伝送装置を示すブロック図である。
【図２】本実施の形態の二重化伝送装置における切替制御を示すブロック図である。
【図３】図２に示す本実施の形態における切替制御部内の切替権利判定部の切替権利判定の処理手順を示すフローチャートである。
【図４】図２に示す本実施の形態における切替制御内の切替判定部の切替判定の処理手順を示すフローチャートである。
【図５】図２に示す本実施の形態における切替制御部内の切替制御信号選択部の切替制御信号の選択の処理手順を示すフローチャートである。
【図６】従来の二重化装置の一例を示すブロック図である。
【符号の説明】
１，２伝送装置
１１，２１切替制御部
１１１，２１１切替判定部
１１２，２１２切替権利判定部
１１３，２１３切替制御信号選択部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a duplex transmission apparatus, and more particularly to a duplex transmission apparatus that does not have a common switching control apparatus.
[0002]
[Prior art]
This type of conventional technology will be described with reference to the drawings.
[0003]
FIG. 6 is a block diagram showing an example of a conventional duplexer.
[0004]
In FIG. 6, this conventional duplexer shows the contents disclosed in Japanese Patent Application Laid-Open No. 59-20056. When a fault occurs in any of the duplexed units 101 and 102, a fault monitoring circuit of the counterpart unit is displayed. The fact that a failure has occurred in the other unit via failure information lines 203 and 205 and the extent of the failure are transmitted to own unit 101 or 102, and whether the other unit is currently in the active state or in the standby state. Is transmitted to the own unit 101 or 102 via the status information lines 204 and 206. Then, based on the four types of information of the occurrence and extent of the failure of the own unit detected by the failure detection circuit within each unit, the status and the failure occurrence and extent of the other unit The occurrence of the failure and the degree of the failure are judged, and it is determined whether the own unit is to be in an operating state or a non-operating state. In this case, when the determinations of both units coincide, the following treatment is performed.
[0005]
That is, when it is determined that both units are in the operating state (when both units are normal), the one determined first is given priority. If both units are determined to be inactive (both units are faulty), priorities are set for the respective units in advance, and the normal unit operates based on that information and the above four information. The unit that has been determined to be in the operating state is set to be in the non-operating state, and the unit that has been determined to be in the operating state becomes the active unit and is determined to be in the non-operating state. Unit becomes a spare unit. In other words, in the conventional technology, the occurrence of failure and the degree of failure are determined by the control commands issued from both circuits described above, and if both units are normal between both units, the current state is maintained, and one of the failure occurs. If it happens, the normal unit is set as the working unit, the abnormal unit is set as a spare, and if both units fail, the normal unit under the preset conditions is set as the working unit and the abnormal unit is set as a spare. To.
[0006]
[Problems to be solved by the invention]
This conventional duplexing device has a fault monitoring circuit in both units and performs fault monitoring in both units. Therefore, if a fault occurs in one of the fault monitoring circuits, switching control cannot be performed. There is.
[0007]
In addition, since the fault monitoring circuits of both units are operating together, there is a problem that it is necessary to process which instruction has priority. Furthermore, there is a problem in that the priority processing becomes complicated because there are N fault monitoring circuits when considering the correspondence to N (N> 3 integer) duplication beyond duplication.
[0008]
(Object of invention)
An object of the present invention is to provide switching control means capable of setting active and standby independently for each duplexed transmission device, thereby reducing the size of the entire system and increasing the reliability of the system against a failure. It is to provide a transmission apparatus.
[0009]
[Means for Solving the Problems]
The duplex transmission apparatus according to the present invention is a duplex transmission apparatus comprising a first transmission apparatus and a second transmission apparatus, wherein the first transmission apparatus includes a state in the first transmission apparatus and a transmission path state. A first switching control means for monitoring, and a second switching control means for monitoring the state in the second transmission device and the state of the transmission line in the second transmission device,
Each of the first switching control means and the second switching control means has setting means for setting the current transmission or the standby independently of the first transmission apparatus and the second transmission apparatus, and the current setting. When the switching control means that has been detected detects an abnormality as a result of the monitoring of the state in the transmission apparatus that accommodates the switching control means of itself, the switching control means that is currently set based on the setting means There is provided a switching signal transmission means for controlling other switching control means to transmit a switching signal for instructing the current working / standby switching for the first transmission apparatus and the second transmission apparatus.
[0010]
The duplex transmission apparatus according to the present invention is a duplex transmission apparatus comprising a first transmission apparatus and a second transmission apparatus, wherein the first transmission apparatus includes a state in the first transmission apparatus and a transmission path state. A first switching control means for monitoring, and a second switching control means for monitoring the state in the second transmission device and the state of the transmission line in the second transmission device;
Each of the first switching control means and the second switching control means has a first setting means for setting whether the current switching or the backup independently of the first and second transmission devices, When the own transmission apparatus that accommodates its own switching control means is set to active, if an abnormality is detected as a result of the monitoring, the own apparatus switching control that instructs the own transmission apparatus to switch from active to standby A switching determination unit that outputs a first switching control signal for instructing the switching from the backup to the working to the other switching control means;
Similar to the first setting means, the second setting means for setting whether the current transmission apparatus or the spare is used, and when the own transmission apparatus is set to the current operation and an abnormality is detected as a result of the monitoring, the second setting means A switching right determination unit that outputs a switching right determination result signal by means;
Similarly to the first and second setting means 2, a third setting is made to set whether the current or spare is used for the self and the first or second transmission apparatus is already set in the current or spare state. A switching right determination result signal that includes setting means, and that receives the own apparatus switching control signal and indicates that it is in use when the own transmission apparatus is set to be active by the third setting means And a first switching signal for instructing the own transmission device to switch from working to standby,
When the own transmission apparatus is set to spare, it receives a switching control signal from spare to working from another switching control means, and instructs the spare own transmission apparatus to switch from spare to working A switching control signal selection unit that outputs a second switching signal.
[0011]
The duplex transmission apparatus according to the present invention is a duplex transmission apparatus comprising a first transmission apparatus and a second transmission apparatus, wherein the first transmission apparatus includes a state in the first transmission apparatus and a transmission path state. A first switching control means for monitoring, and a second switching control means for monitoring the state in the second transmission device and the state of the transmission line in the second transmission device;
Each of the first switching control means and the second switching control means includes first setting means for setting whether the current switching or the backup is independent of the first and second transmission devices, If the own transmission device that accommodates its own switching control means is set to the current operation and an abnormality is detected as a result of the monitoring when the first setting device is set to the current one, A switching determination unit for outputting a switching control signal for instructing switching from the standby to the working for the other device, and a switching determination unit for instructing switching from the working to the standby.
In the same manner as the first setting means, it has second setting means for setting whether it is active or backup, and when the second setting means is used in the same way as the first setting means, A switching right determination unit that outputs a first switching right determination result signal indicating that the own transmission apparatus is currently used and detects an abnormality as a result of the monitoring; and the first and second Similarly to the setting means 2, the third setting means for setting the current or spare for the self and the third and the second setting means for setting whether the first and second transmission devices are currently set or spare, and 3. When the own transmission apparatus and the self are set to active by the setting means of 3, the own apparatus switching control signal is received, and the first switching right determination result signal indicating the active is received. From the working to the spare for the own transmission equipment A switching control signal selection unit that outputs a first switching signal for instructing switching, wherein the own transmission apparatus is set as a backup, and the switching determination unit, a switching right determination unit, and a switching control signal selection unit are set as a backup When set, the switching control signal selection unit sends out from another switching determination unit in the other switching control unit that the other switching control unit sends out according to the result of the abnormality detection of the current own transmission device. Receiving the second switching control signal instructing switching from the backup to the working and using the second switching right determination result signal indicating the backup from the switching right determination unit to the spare own transmission apparatus A second switching signal indicating switching from standby to working is output, the own transmission apparatus is set to active, and the switching determination unit, switching right determination unit, and switching control selection unit are set to standby Before if Switching determination unit of said self-device switching control signal and the result of detecting an abnormality of the monitoring of the own transmission apparatus, also, it outputs the first switch control signal to the other switch control means,
The switching right determination unit outputs the second switching right determination result signal indicating that it is a reserve,
The switching control signal selection unit outputs the first switching signal upon receiving the own device switching control signal and the second switching right determination result signal, the own transmission device is set as a spare, and the switching determination The switching control signal selection unit is sent by the other switching control means according to the result of detection of an abnormality in the current own transmission device. The second switching control signal for instructing the switching from the backup to the active one sent from the other switching determination unit in the other switching control means is received and indicates the backup from the switching right determination unit The second switching signal indicating the switching from the spare to the working is output to the spare self-transmission apparatus by the second switching right determination result signal.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is a block diagram showing a duplex transmission apparatus according to an embodiment of the present invention.
[0014]
In FIG. 1, the duplex transmission apparatus of the present embodiment includes a preset transmission apparatus 1 on the active side and a transmission apparatus 2 on the standby side. The transmission apparatus 1 is independent of the current setting of the transmission apparatus 1. In addition, the transmission control unit 11 includes a switching control unit 11 that can perform a variable setting for current or backup, and similarly, the transmission device 2 has a variable for standby or current as opposed to the switching control unit 11 independently of the preliminary setting of the transmission device 2. set comprising a and a switching control unit 21 as possible, the switching control unit 11 working against receives the switching determination information a _11-failure or the like in the transmission apparatus 1 of the working and are working set own transmission apparatus 1 A switching signal a ₁₂ from the standby mode to the standby mode is output, and a switching control signal a ₁ from the standby mode to the active mode is output to the switching control unit 21 of the other transmission apparatus 2 set as the standby mode. On the contrary, the switching control unit 21 is the same as the switching control unit 11 in the present. When set, when receiving the switching determination information b ₂₁ due to a failure or the like of its own transmission apparatus 2 that has been working set, and outputs a switching signal b ₂₂ to the protection from the working against its own transmission apparatus 2, A switch control signal b ₁ from backup to work is output to the switch control unit 11 of the other transmission apparatus 1 that is set in reserve.
[0015]
FIG. 2 is a block diagram showing a switching control unit in the duplex transmission apparatus of this embodiment.
[0016]
In FIG. 2, the switching control unit 11 of the transmission apparatus 1 according to the present embodiment is configured to provide information on a failure or the like in the transmission apparatus 1 that is currently set based on setting information that is initially set in advance or active. When the switching determination information a ₁₁ is received, the switching determination unit 111 that sends the switching control signal a ₁₃ to the own device (transmission device 1) to the switching control signal selection unit 113, and whether the own transmission device 1 is used or reserved in advance. The switching right determination information a ₁₄ is input based on information such as a failure in the transmission apparatus 1 that is initially set, and the switching right determination result signal a ₁₅ , which is initially set in advance or spare, is supplied to the switching control selection unit 113. The switching right determination unit 112 to be transmitted and the switching control signal a ₁₃ to the own device received based on the switching right determination result signal a ₁₅ or the switching control signal b ₁ from another device (transmission signal 2) are received. And own device (transmission device) There and a switching control signal selecting unit 113 for outputting a switching signal a ₁₂ to the working from the preliminary or pre from the working to the self-device (transmission device 1) depending on whether the working or spare.
[0017]
Note that the switching control unit 21 also includes a switching determination unit 211, a switching right determination unit 212, and a switching control signal selection unit 213, similar to the switching control unit 11.
[0018]
FIG. 3 is a flowchart showing the operation of the switching right determination unit in the switching control unit in the present embodiment shown in FIG.
[0019]
Next, the operation of the switching right determination unit 112 will be described with reference to FIGS.
[0020]
In FIG. 3, the switching right determination unit 112 first inputs code information for setting the self-switching right determination unit 112 as active or standby in advance by an internal setting input unit independently of the own transmission device 1. It is memorized (S1).
[0021]
Next, when failure information or the like from the inside of the currently used own transmission device 1 is received as the switching right determination information (a ₁₄ ), the own device switching of the own switching control unit 11 is performed based on the initial setting information. It is determined whether to select the control signal a ₁₃ or the switching control signal to the other switching control unit 21 (S2).
[0022]
When the initial setting information is set to the current use, the switching right determination result signal a ₁₅ is output to select the own switching control unit 11 (S3). If the initial setting information is set as spare and the own transmission apparatus is spare, the other switching control unit 21 determines whether to select the switching control unit b ₁ from the other switching control unit (S4).
[0023]
Again, if both of the initial setting information are set as spares, the switching right determination result signal a ₁₅ is output to select the switching control signal b ₁ from the other switching control unit 21 (S5).
[0024]
FIG. 4 is a flowchart showing the operation of the switching determination unit in the switching control unit in the present embodiment shown in FIG.
[0025]
Next, the operation of the switching determination unit 111 will be described with reference to FIGS.
[0026]
In FIG. 4, first, the switching determination unit 111 inputs in advance code information for setting the own switching determination unit 11 to be active or standby independently of the own transmission device 1 by an internal setting input unit. It is memorized (S11).
[0027]
Then, when receiving the fault information or the like from the interior of the own transmission device 1 when it is set to the working as a switching determination information a _11, based on the initial setting information of its own apparatus of its own switching control unit 11 It determines whether to select a switching control signal a ₁₃ (S12).
[0028]
If the information in the initial setting is set to the active outputs a switching control signal a ₁ to the own device switching control signal a ₁₃ and the other switching control section (S3). If the initial setting information is set as spare and the own transmission device 1 is set as spare, there is no output to the own switching control unit 11 and the switching control signal from the other switching control unit 21. It is determined whether or not b ₁ is selected (S14).
[0029]
Again, if both of the initial setting information are set as spare, the switching control unit b ₁ from the other switching control unit 21 is selected (S15).
[0030]
FIG. 5 is a flowchart showing the operation of the switching control signal selection unit in the present embodiment shown in FIG.
[0031]
Next, the operation of the switching control signal selection unit 113 will be described with reference to FIGS.
[0032]
In FIG. 5, first, the switching control signal selection unit 113 sets in advance code information for setting the own switching control signal selection unit 113 as active or standby independently of the own transmission device 1 by an internal setting input unit. Is input and stored (S21).
[0033]
Then, based on the information of the initial setting and switching the right judgment result signal a _15, it determines whether to select a switching control signal a ₁₃ in the own apparatus from the switching determination unit 111 (S22).
[0034]
When the own device and its own initial setting information and the switching right determination result signal a ₁₅ are set to the current use, the switching control signal a ₁₃ from the switching determination unit 111 to the own device is selected, and the own device ( The switching signal a ₁₂ from the current use to the backup to the transmission apparatus 1) is output (S23).
[0035]
If both the own device and its own initial setting information and the switching right determination result signal a ₁₅ are set as spare, the switching determination unit 111 does not receive the switching control signal a ₁₃ to the own device. Then, it is determined whether to select the switching control signal b ₁ output from the switching control unit 21 from the other switching control unit (S24).
[0036]
When the switching control signal b ₁ from the other switching control unit 21 is selected and received, the switching signal a ₁₂ for switching from the spare to the current device (the transmission device 1) is output (S25).
[0037]
The operation of the switching determination unit 111, the switching right determination unit 112, and the switching control signal selection unit 113 in the switching control unit 11 has been described above. However, the switching determination unit 211, the switching right determination unit 212, and the switching in the switching control unit 21 have been described. Since the control signal selection unit 213 performs the same operation, the description thereof is omitted.
[0038]
Next, the switching operation of the entire system shown in FIG. 1 will be described with reference to FIGS.
[0039]
In the description of the switching operation, the transmission device 1 is set in advance and the transmission device 2 is set in advance, and the switching control unit 11 is set in active and the switching control unit 21 is set in standby independently of this. In the case where there is a failure in the active transmission apparatus 1 and the operation is switched from the active to the standby, the operation will be described below.
[0040]
In this case, since the switching control unit 11 is in operation, the initial settings of the switching determination unit 111, the switching right determination unit 112, and the switching control signal selection unit 113 are preset for the current use. It is assumed that initial settings of the switching determination unit 211, the switching right determination unit 212, and the switching control signal selection unit 213 are set in advance as spares.
[0041]
In the system shown in FIG. 1 that is set as described above, when a failure occurs in the transmission device 1, the fault information is inputted as the switching determination information a ₁₁ for switching determination unit 111 of the switching control unit 11, 4 outputs a switching control signal a ₁₃ to the own apparatus (transmission apparatus 1) and outputs a switching control signal a ₁ to the other switching control unit 21.
[0042]
Further, the switching right determination unit 112 receives the failure information as the switching right determination information a ₁₄ , and outputs a switching right determination result signal a ₁₅ indicating that the own switching control unit 11 is active by the operation shown in FIG. To do.
[0043]
Upon receiving the switching right determination result signal a ₁₅ , the switching control signal selection unit 113 outputs the received switching control signal a ₁₃ to the own device as the switching signal a ₁₂ to the own device (transmission device 1). Then, the transmission apparatus 1 is switched from the current use to the spare.
[0044]
On the switching control unit 21 side, when the switching control signal selection unit 213 receives the switching control signal a ₁ from the other switching control unit from the switching determination unit 111 of the switching control unit 11, the initial setting is set to reserve. Then, the switching signal b ₁₂ is output so as to change from the spare to the current apparatus (transmission apparatus 2) to the current one.
[0045]
As a result, the transmission apparatus 1 is switched to the standby and the transmission apparatus 2 is switched to the active one.
[0046]
However, the switching control unit 11 is currently used and the switching control unit 21 is reserved, and in order to change it, the switching determination units 111 and 211, the switching right determination unit in the switching control units 11 and 21, respectively. 112 and 212 and the initial settings of the switching control signal selection units 113 and 213 need to be changed.
[0047]
As described above, in the present embodiment, by providing the switching control units 11 and 21 in each of the devices that can be used or reserved independently of the duplexed transmission devices 1 and 2, Switching control with higher reliability than before can be performed.
[0048]
In addition, since the switching control units 11 and 21 are set in advance as active or backup in advance by initial setting, it is possible to eliminate the priority processing of which command is prioritized.
[0049]
Further, in the above embodiments, the duplex transmission apparatuses 1 and 2 have been described. However, the N-duplex having a switching control unit capable of independently setting active or standby is provided in each apparatus. The configuration of the transmission devices 1, 2,... N can be easily constructed.
[0050]
【The invention's effect】
As described above, the present invention monitors the state in the first transmission device and the state of the transmission line in the first transmission device in the duplex transmission device composed of the first transmission device and the second transmission device. First switching control means, and second switching control means for monitoring the state in the second transmission apparatus and the state of the transmission path in the second transmission apparatus, and the first switching control means and the second switching control means Each of the two switching control means has setting means for setting the current or backup independently of the first transmission apparatus and the second transmission apparatus, and the own switching control means set for current use is its own. When an abnormality is detected as a result of the monitoring of the state in the transmission apparatus that accommodates the switching control means, the switching control means that is currently set based on the setting means controls the other switching control means, and the first Current working / preliminary for the second transmission device and the second transmission device By having the switching signal sending means for sending a switching signal,
First, in addition to the first and second transmission apparatuses, it is not necessary to prepare an independent switching control apparatus that monitors these transmission apparatuses and performs switching control, and the entire system is physically reduced in size. There is an effect that can be done.
[0051]
Secondly, by providing the switching control means in each transmission device, switching control is distributed, and the reliability of the duplex system can be improved.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a duplex transmission apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram showing switching control in the duplex transmission apparatus of the present embodiment.
FIG. 3 is a flowchart showing a processing procedure for switching right determination of a switching right determination unit in the switching control unit in the present embodiment shown in FIG. 2;
4 is a flowchart illustrating a switching determination processing procedure of a switching determination unit in the switching control according to the present embodiment illustrated in FIG. 2;
5 is a flowchart showing a processing procedure for selecting a switching control signal of a switching control signal selection unit in the switching control unit in the present embodiment shown in FIG. 2;
FIG. 6 is a block diagram showing an example of a conventional duplexer.
[Explanation of symbols]
1, 2 Transmission devices 11, 21 Switching control unit 111, 211 Switching determination unit 112, 212 Switching right determination unit 113, 213 Switching control signal selection unit

Claims

In a duplex transmission apparatus comprising a first transmission apparatus and a second transmission apparatus, a first switching control means for monitoring a state in the first transmission apparatus and a state of a transmission path in the first transmission apparatus. A second switching control means for monitoring the state in the second transmission device and the state of the transmission line in the second transmission device,
Each of the first switching control means and the second switching control means has setting means for setting the current transmission or the standby independently of the first transmission apparatus and the second transmission apparatus, and the current setting. When the switching control means that has been detected detects an abnormality as a result of the monitoring of the state in the transmission apparatus that accommodates the switching control means of itself, the switching control means that is currently set based on the setting means And a switching signal sending means for sending a switching signal for instructing switching of the current working / standby for the first transmission apparatus and the second transmission apparatus by controlling another switching control means. Duplex transmission equipment.

In a duplex transmission apparatus comprising a first transmission apparatus and a second transmission apparatus, a first switching control means for monitoring a state in the first transmission apparatus and a state of a transmission path in the first transmission apparatus. A second switching control means for monitoring the state in the second transmission device and the state of the transmission line in the second transmission device,
Each of the first switching control means and the second switching control means has a first setting means for setting whether the current switching or the backup independently of the first and second transmission devices, When the own transmission apparatus that accommodates its own switching control means is set to active, if an abnormality is detected as a result of the monitoring, the own apparatus switching control that instructs the own transmission apparatus to switch from active to standby A switching determination unit that outputs a first switching control signal for instructing the switching from the backup to the working to the other switching control means;
Similar to the first setting means, the second setting means for setting whether the current transmission apparatus or the spare is used, and when the own transmission apparatus is set to the current operation and an abnormality is detected as a result of the monitoring, the second setting means A switching right determination unit that outputs a switching right determination result signal by means;
Similarly to the first and second setting means 2, a third setting is made to set whether the current or spare is used for the self and the first or second transmission apparatus is already set in the current or spare state. A switching right determination result signal that includes setting means, and that receives the own apparatus switching control signal and indicates that it is in use when the own transmission apparatus is set to be active by the third setting means And a first switching signal for instructing the own transmission device to switch from working to standby,
When the own transmission apparatus is set to spare, it receives a switching control signal from spare to working from another switching control means, and instructs the spare own transmission apparatus to switch from spare to working A duplex transmission apparatus comprising: a switching control signal selection unit that outputs a second switching signal.

In a duplex transmission apparatus comprising a first transmission apparatus and a second transmission apparatus, a first switching control means for monitoring a state in the first transmission apparatus and a state of a transmission path in the first transmission apparatus. A second switching control means for monitoring the state in the second transmission device and the state of the transmission line in the second transmission device,
Each of the first switching control means and the second switching control means includes first setting means for setting whether the current switching or the backup is independent of the first and second transmission devices, If the own transmission device that accommodates its own switching control means is set to the current operation and an abnormality is detected as a result of the monitoring when the first setting device is set to the current one, A switching determination unit for outputting a switching control signal for instructing switching from the standby to the working for the other device, and a switching determination unit for instructing switching from the working to the standby.
In the same manner as the first setting means, it has second setting means for setting whether it is active or backup, and when the second setting means is used in the same way as the first setting means, A switching right determination unit that outputs a first switching right determination result signal indicating that the own transmission apparatus is currently used and detects an abnormality as a result of the monitoring; and the first and second Similarly to the setting means 2, the third setting means for setting the current or spare for the self and the third and the second setting means for setting whether the first and second transmission devices are currently set or spare, and 3. When the own transmission apparatus and the self are set to active by the setting means of 3, the own apparatus switching control signal is received, and the first switching right determination result signal indicating the active is received. From the working to the spare for the own transmission equipment Duplex transmission system, characterized in that it comprises a switching control signal selecting section that outputs a first switching signal for instructing the switching.

When the own transmission apparatus is set as backup and the switching determination unit, switching right determination unit, and switching control signal selection unit are set as backup, the switching control signal selection unit uses other switching control means. Receiving a second switching control signal for instructing switching from the standby to the working, which is sent from another switching judgment unit in the other switching control means which is sent according to the result of the abnormality detection of the own transmission device, and the switching 4. The second switching signal indicating switching from standby to working is output to the spare self-transmission apparatus by a second switching right determination result signal indicating backup from the right determination unit. Duplex transmission equipment.

When the own transmission device is set as active, and the switching determination unit, the switching right determination unit, and the switching control selection unit are set as backup, the switching determination unit is abnormal as a result of the monitoring of the own transmission device. Detecting the own device switching control signal, and outputting the first switching control signal to other switching control means,
The switching right determination unit outputs the second switching right determination result signal indicating that it is a reserve,
4. The duplexer according to claim 3, wherein the switching control signal selection unit outputs the first switching signal when receiving the own device switching control signal and the second switching right determination result signal. 5.

When the own transmission apparatus is set as standby and the switching determination unit, the switching right determination unit, and the switching control signal selection unit are set as active, the switching control signal selection unit includes other switching control means. Receiving the second switching control signal instructing switching from the backup to the working, which is sent from another switching judgment unit in the other switching control means which is sent according to the detection result of the abnormality of the working own transmission apparatus; and In response to the second switching right determination sign signal indicating that it is a backup from the switching right determination unit, the second switching signal indicating the switching from the standby to the working is output to the spare own transmission apparatus. The duplex transmission apparatus according to claim 3.