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CN1874201A - Method and equipment for triggering protection of optical network under shared configuration of receiving devices - Google Patents

Method and equipment for triggering protection of optical network under shared configuration of receiving devices Download PDF

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Publication number
CN1874201A
CN1874201A CNA2006100893350A CN200610089335A CN1874201A CN 1874201 A CN1874201 A CN 1874201A CN A2006100893350 A CNA2006100893350 A CN A2006100893350A CN 200610089335 A CN200610089335 A CN 200610089335A CN 1874201 A CN1874201 A CN 1874201A
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channel
protection
working channel
switching
good
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CN1874201B (en
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王振宇
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2006/003785 priority patent/WO2008000120A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability

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  • Computer Networks & Wireless Communication (AREA)
  • Optical Communication System (AREA)

Abstract

本发明公开了一种在接收设备共享配置下的光网络保护触发方法及装置，方法包括：选择单板将工作通道或保护通道连接到业务接收设备，自动保护倒换控制器根据工作通道光检测点、保护通道光检测点和所述接收设备的业务信号检测点的检测结果，判断所述工作通道和保护通道是否发生故障，并控制所述选择单板遵照如下方式进行切换：如果所述工作通道良好，则切换保持在所述工作通道；如果所述工作通道故障，所述保护通道良好，则切换保持在所述保护通道；如果所述工作通道故障，所述保护通道故障，则切换保持在所述工作通道。本发明能够有效判别倒换引发的恢复信号和工作通路被修复所引发的恢复信号，避免系统的错误操作。

Figure 200610089335

The invention discloses a method and device for triggering optical network protection under the shared configuration of receiving equipment. The method includes: selecting a single board to connect a working channel or a protection channel to a service receiving device, and the automatic protection switching controller according to the optical detection point of the working channel , the detection results of the optical detection point of the protection channel and the service signal detection point of the receiving device, judge whether the working channel and the protection channel fail, and control the switching of the selection board in the following manner: if the working channel If the working channel is good, the switch remains on the working channel; if the working channel fails and the protection channel is good, the switching remains on the protection channel; if the working channel fails and the protection channel fails, the switching remains on the working channel. The invention can effectively distinguish the recovery signal caused by switching and the recovery signal caused by the restoration of the working path, so as to avoid the wrong operation of the system.

Figure 200610089335

Description

Optical network protection triggering method and device under the shared configuration of receiving equipment
Technical field
The present invention relates to the optical communication field, particularly relate to the realization technology that the Optical Transmission Network OTN protection of adopting wave division multiplexing WDM (WavelengthDivision Multiplexing) technology is switched.
Background technology
In the application that optical transport network protection is at present switched, have two kinds of system configuration modes for the receiving equipment of protected service signal: receiving equipment redundant configuration and receiving equipment are shared configuration, respectively as depicted in figs. 1 and 2.For receiving equipment redundant configuration mode shown in Figure 1; on active channel and protection path, respectively dispose a service signal receiving equipment 101; can detect the service signal quality condition on its place path; be respectively the triggering signal that APS (Automatic Protection Switching, the APS) controller 102 (be used for realizing APS protocol algorithm processing capacity) of system provides protection to switch and recover.Share configuration mode for receiving equipment shown in Figure 2; service signal from active channel and protection path at first arrives receiving equipment 101 after overprotection final controlling element (the protection selector switch 103 in the corresponding diagram) carries out the signal selection; be that active channel and protection path are shared the same receiving equipment of use; be used to detect the service signal quality condition on the current path, protect the triggering signal of switching and recovering for system's APS controller provides.For the applicable cases of Fig. 1,, can not exist protection to switch the associated treatment problem that triggers criterion because active channel and protection path have separately independently input ability.But the configuration for the shared receiving equipment of Fig. 2 is used, after the system works path fault is switched in a flash, service reception equipment can detect signal in detection and recover, but does not answer the protection of triggering system to recover (turning back to active channel) operation; After service signal was switched to the protection path, receiving equipment can only detect the signal(l)ing condition of protection path, and system will be difficult to effectively to realize the guard mode recovery operation of active channel after normal.
Summary of the invention
Technical problem to be solved by this invention provides a kind of optical network protection triggering method and device under the shared configuration of receiving equipment; the solution prior art can not effectively be differentiated restoring signal and the active channel of switching initiation and be repaired the restoring signal that is caused, and can not avoid the technical problem of the faulty operation of system.
For achieving the above object, the invention provides a kind of optical network protection triggering method under the shared configuration of receiving equipment, its characteristics are, select veneer that service aisle or protection passage are connected to service reception equipment, Automatic Protection Switching Control is according to service aisle light test point, the testing result of the service signal test point of protection passage light test point and described receiving equipment, judge whether described service aisle and protection passage break down, and control described selection veneer and abide by following mode and switch: mode one, if described service aisle is good, then switching remains on described service aisle; Mode two, if described service aisle fault, described protection passage is good, then switches to remain on described protection passage; Mode three, if described service aisle fault, described protection channel failure, then switching remains on described service aisle.
Above-mentioned method; its characteristics are; utilize the warning information of described service aisle light test point and described protection passage light test point to determine the transformation of the good or malfunction of described service aisle and described protection passage, and utilize the warning information of described service signal test point and alarm disappearance information that described state change is further confirmed with alarm disappearance information.
Above-mentioned method, its characteristics are that good at described service aisle, switching remains under the initial condition of described service aisle, and described mode two further comprises the steps:
Step a1 if described service signal test point detects signal fault, illustrates that then described service aisle breaks down, and described receiving equipment sends to described switch controller and switches triggering message;
Step b1, described switch controller send command message and come the execute protection switching operation to described selection veneer, connect described receiving equipment by described protection passage, and to start a time length simultaneously be the timer of T;
Step c1 in the time T of timer, if described switch controller receives the alarm disappearance message that described service reception equipment reports, illustrates that then described protection passage is good, the connection that keeps described protection passage.
Above-mentioned method; its characteristics are; good at described service aisle; switch and remain under the initial condition of described service aisle; described mode three is for further to comprise in described step c1: in the time T of timer, if described switch controller does not receive the alarm disappearance message that described service reception equipment reports, illustrate that then fault has also taken place described protection passage; then carry out recovery operation, keep the connection of described service aisle again.
Above-mentioned method; its characteristics are; all break down at described service aisle and described protection passage; switch and remain under the initial condition of described service aisle; described mode one comprises: if described switch controller receives the detected alarm disappearance of signal of described service signal test point; the state that described service aisle then is described changes into well, continues to keep the connection of described service aisle.
Above-mentioned method, its characteristics are, all break down at described service aisle and described protection passage, switch to remain under the initial condition of described service aisle, and described mode two comprises:
Step a2, do not receive at described switch controller under the prerequisite of the detected alarm disappearance of signal of described service signal test point, if described switch controller receives the alarm disappearance message that described protection passage light test point reports, illustrate that then the state of described protection passage changes into well;
Step b2, described switch controller send command message and come the execute protection switching operation to described selection veneer, connect described receiving equipment by described protection passage, and to start a time length simultaneously be the timer of T;
Step c2 in the time T of timer, if described switch controller receives the alarm disappearance message that described service reception equipment reports, illustrates that then described protection passage is good, the connection that keeps described protection passage.
Above-mentioned method; its characteristics are; all break down at described service aisle and described protection passage; switch and remain under the initial condition of described service aisle; described mode three is for further to comprise in described step c2: in the time T of timer, if described switch controller does not receive the alarm disappearance message that described service reception equipment reports, described protection passage or fault are described then; then carry out recovery operation, keep the connection of described service aisle again.
Above-mentioned method; its characteristics are; in described service aisle fault; described protection passage is good; switch and remain under the initial condition of described protection passage; described mode three comprises: if described switch controller receives the alarm generation message that described protection passage light test point reports, then described switch controller sends command message and switches recovery operation to described selection veneer execution, returns to the connection of described service aisle.
Above-mentioned method, its characteristics are that in described service aisle fault, described protection passage is good, switch to remain under the initial condition of described protection passage, and described mode one comprises:
Step a3, not receiving the detected alarm of described service signal test point at described switch controller produces under the prerequisite of message, if described switch controller receives the alarm disappearance message that described service aisle light test point reports, illustrate that then the state of described service aisle changes into well;
Step b3, described switch controller send command message and come the execute protection recovery operation to described selection veneer, connect described receiving equipment by described service aisle, and to start a time length simultaneously be the timer of T;
Step c3 in the time T of timer, if described switch controller receives the alarm disappearance message that described service reception equipment reports, confirms that then described service aisle is good, keeps the connection of described service aisle.
Above-mentioned method; its characteristics are; in described service aisle fault; described protection passage is good; switch and remain under the initial condition of described protection passage; described mode two is for further to comprise in described step c3: in the time T of timer; if described switch controller does not receive the alarm disappearance message that described service reception equipment reports; then described service aisle is fault still; described switch controller is controlled described selection veneer and is carried out switching operation, the connection that is switched to described protection passage and keeps described protection passage.
Above-mentioned method, its characteristics are that the length of described time T is carried out more than or equal to described selection veneer and switched required maximum time and the required maximum time sum of described receiving equipment detection affirmation alarm disappearance.
In order to realize that better purpose of the present invention, the present invention also provide a kind of optical network protection trigger equipment under the shared configuration of receiving equipment, its characteristics are, comprise and select veneer, service reception equipment and Automatic Protection Switching Control; Described selection veneer is connected to described receiving equipment with service aisle or protection passage; Described switch controller is used for: according to the testing result of the service signal test point of service aisle light test point, protection passage light test point and described receiving equipment, judge whether described service aisle and protection passage break down, and control described selection veneer and abide by following mode and switch:, then switch and remain on described service aisle if described service aisle is good; If described service aisle fault, described protection passage is good, then switches to remain on described protection passage; If described service aisle fault, described protection channel failure, then switching remains on described service aisle.
Technique effect of the present invention is: the present invention is directed to the situation that receiving equipment is shared configuration, can effectively differentiate restoring signal and the active channel of switching initiation and be repaired the restoring signal that is caused, avoid the faulty operation of system.
Description of drawings
Fig. 1 is the schematic diagram of receiving equipment redundant configuration;
Fig. 2 shares the schematic diagram of configuration for receiving equipment;
Fig. 3 is that shared receiving equipment protection provided by the invention triggers flow chart;
Fig. 4 is a 1+1 protection applicating example schematic diagram provided by the invention.
Embodiment
Below in conjunction with accompanying drawing and applicating example, concrete technology implementation scheme of the present invention is explained in detail.
The present invention is directed to the system protection of sharing under the receiving equipment configuration application scenarios and switch reliable triggering problem, proposed corresponding solution, Fig. 3 triggers flow chart for sharing the receiving equipment protection, as shown in the figure, mainly comprises following performing step:
1) at first need the trigger message of each test point that comprehensive share protect apparatus can provide, device shown in Figure 2 can provide following three test points: service signal test point, service aisle light test point, protection passage light test point.
2) when " service signal test point " when detecting signal fault, OTU sends APS by the Communication Control bus and triggers message to the APS controller, and the APS controller sends command message by the Communication Control bus and comes the execute protection switching operation to protection selector switch module; Starting a time length simultaneously is the timer of T, and the time span setting of T should be not less than " the protection selector switch is carried out and switched required maximum time T1 " and " OTU detects and confirms to alarm the maximum required time T2 that disappears " sum.
3) in timer picks up counting the time that timing finishes,, then protect selector switch to remain on the protection switch status if the APS controller receives the alarm disappearance message that service reception equipment reports; If do not receive the alarm disappearance message that service reception equipment reports, assert that then there is fault in the protection path, the APS controller sends command message by the Communication Control bus and carries out the operation that turns back to active channel to the protection selector switch.
If the optical switch state is service aisle state (this moment, the alarm status of corresponding service reception equipment was in alarm generation state) after step 3) always, then carry out according to following steps:
4) if during after this APS controller receives " service signal test point " detected alarm disappearance of signal, then the alarm of decidable active channel disappears, and protection selector switch state continues to maintain the service aisle state.Turn back to the treatment state of step 1).
5) after this do not receive under the prerequisite of " service signal test point " detected alarm disappearance of signal at the APS controller; after the APS controller receives the alarm disappearance message that " protection passage light test point " report; then selector switch execute protection switching operation is protected in the control of APS controller, starts the regulation of the timer that a time length is T (time span of T is provided with front step 2) simultaneously).In timer picks up counting the time that timing finishes, if the APS controller receives the alarm disappearance message that service reception equipment reports, then protect selector switch to keep the protection switch status, treatment step proceeds to step 6) then; If do not receive the alarm disappearance message that service reception equipment reports; assert that then still there is fault in the protection path; the APS controller sends command message by the Communication Control bus and carries out recovery operation to the protection selector switch, returns service aisle, and treatment step turns back to step 4).
If the optical switch state maintains protection channel status (this moment, the alarm status of corresponding service aisle was in alarm generation state) after step 3), then carry out according to following steps:
6) if the APS controller receives after alarm that " protection passage light test point " report produces message, the APS controller sends command message by the Communication Control bus and carries out to the protection selector switch and switch recovery operation, returns to service aisle.Treatment step forwards step 4) to.
7) do not receive the alarm that " protection passage light test point " report produces under the prerequisite of message at the APS controller, after if the APS controller receives the alarm disappearance message that " service aisle light test point " report, then the APS controller sends command message to the recovery operation of protection selector switch execute protection by the Communication Control bus, starting a time length simultaneously is the timer of T, the time span of T is provided with front step 2) regulation, in timer picks up counting the time that timing finishes, if the APS controller receives the alarm disappearance message that service reception equipment reports, then control protection selector switch keeps returning to form, and treatment step turns back to step 1); If do not receive the alarm disappearance message that service reception equipment reports, then still there is fault in the identification path, and APS controller control protection selector switch is carried out switching operation, is switched to the protection passage, and treatment step turns back to step 6).
As shown in Figure 4 be that the point-to-point 1+1 protected is used schematic diagram in the light conveying system; wherein source node with service signal be divided into two parts of whiles along service aisle and the protection passage transmit to destination node; select veneer (OP veneer) to receive respectively in destination node by light from the service signal of service aisle with the protection passage; the OP veneer itself provides the luminous power to service aisle and protection passage to detect; after the OP veneer, will select the service signal after receiving to be sent to the business reception veneer OTU that is connected; the OTU veneer can carry out the dropout (LOS) to service signal; LOF (LOF); the out-of-limit alarms such as (BER) of error code detects and reports APS controller veneer in real time, and APS control veneer is carried out veneer (OP veneer) according to the protection protocol algorithm to APS and sent the switch switching operation then.
When only 1. break down the position, OTU detects the LOS alarm and produces message, send message by control bus and control veneer to APS, APS control veneer control APS carries out veneer OP execute protection switching operation, start timer T=T1+T2=50ms+300ms=350ms simultaneously, wherein T1 carries out for the OP veneer and switches required maximum time, and T2 confirms the maximum required time of alarm disappearance for the OTU veneer detects; In T timing time scope, APS control veneer receives OTU and detects the signal recovery normal messages that reports, and controls OP simultaneously and maintains the protection switch status.Subsequent position is after 1. fault is repaired, OP service aisle light test point detects luminous power and recovers normal and report APS control veneer, APS control veneer is then controlled the OP veneer and is carried out the operation of returning service aisle, start timer T (T value 350ms) simultaneously, in T timing time scope, APS control veneer receives OTU and detects the signal recovery normal messages that reports, and controls OP subsequently and maintains the active channel state.
When 1. broke down the position, the OTU point detection signal detected signal fault and reports APS control single board signals to lose (LOS) alarm, and APS control veneer control OP veneer is carried out the operation that is switched to the protection passage.When 2. subsequent position broke down again, APS control veneer received after the protection passage luminous power alarm signal of OP, can control the OP veneer immediately and carry out recovery operation, and OP recovers at the service aisle state.Subsequent position is after 2. fault is repaired; OP protection passage light test point detects luminous power and recovers normal and report APS control veneer; APS control veneer is then controlled the OP veneer and is carried out the operation that is switched to the protection passage; start timer T (T value 350ms) simultaneously; in T timing time scope; APS control veneer receives OTU and detects the signal recovery normal messages that reports, and controls OP subsequently and maintains the protection channel status.
When only 2. broke down the position, it was " alarm produces " with protection channel alarm status indication that system APS control veneer only needs, and APS control veneer can not controlled the OP veneer and carry out any operation, and OP maintains the service aisle state.After 2. break down the position; it is " alarm produces " with protection channel alarm status indication that system APS control veneer only needs; when 1. subsequent position breaks down again; APS control veneer receives after the alarm signal of protection passage luminous power fault of OP; can control the OP veneer immediately and carry out recovery operation, the OP veneer recovers at the service aisle state.Subsequent position is after 2. fault is repaired; OP protection passage light test point detects luminous power and recovers normal and report APS control veneer; APS control veneer is then controlled the OP veneer and is carried out the operation that is switched to the protection passage; start timer T (T value 350ms) simultaneously; in T timing time scope; APS control veneer receives OTU and detects the signal recovery normal messages that reports, and controls OP subsequently and maintains the protection channel status.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Every according to equivalence variation and modification that the present invention did, all contained by claim of the present invention.

Claims (12)

1、一种在接收设备共享配置下的光网络保护触发方法，其特征在于，选择单板将工作通道或保护通道连接到业务接收设备，自动保护倒换控制器根据工作通道光检测点、保护通道光检测点和所述接收设备的业务信号检测点的检测结果，判断所述工作通道和保护通道是否发生故障，并控制所述选择单板遵照如下方式进行切换：1. A triggering method for optical network protection under the shared configuration of receiving equipment, characterized in that a single board is selected to connect the working channel or the protection channel to the service receiving equipment, and the automatic protection switching controller is based on the optical detection point of the working channel and the protection channel Based on the detection results of the light detection point and the service signal detection point of the receiving device, it is judged whether the working channel and the protection channel are faulty, and the switching of the selection board is controlled in the following manner: 方式一，如果所述工作通道良好，则切换保持在所述工作通道；Mode 1, if the working channel is good, the switching remains in the working channel; 方式二，如果所述工作通道故障，所述保护通道良好，则切换保持在所述保护通道；Mode 2, if the working channel is faulty and the protection channel is good, switching remains in the protection channel; 方式三，如果所述工作通道故障，所述保护通道故障，则切换保持在所述工作通道。Mode 3, if the working channel fails and the protection channel fails, the switching remains on the working channel. 2、根据权利要求1所述的方法，其特征在于，利用所述工作通道光检测点和所述保护通道光检测点的告警信息和告警消失信息来确定所述工作通道和所述保护通道的良好或故障状态的转变，并利用所述业务信号检测点的告警信息和告警消失信息对所述状态改变进行进一步的确认。2. The method according to claim 1, characterized in that the alarm information and alarm disappearance information of the optical detection points of the working channel and the protection channel are used to determine the distance between the working channel and the protection channel. Transition of the good or fault state, and use the alarm information and alarm disappearance information of the service signal detection point to further confirm the state change. 3、根据权利要求2所述的方法，其特征在于，在所述工作通道良好，切换保持在所述工作通道的初始条件下，所述方式二进一步包括如下步骤：3. The method according to claim 2, characterized in that, when the working channel is good and the switching remains at the initial condition of the working channel, the second method further includes the following steps: 步骤a1，如果所述业务信号检测点检测到信号故障，则说明所述工作通道发生故障，所述接收设备向所述倒换控制器发送倒换触发消息；Step a1, if the service signal detection point detects a signal failure, it means that the working channel has a failure, and the receiving device sends a switching trigger message to the switching controller; 步骤b1，所述倒换控制器发送命令报文给所述选择单板来执行保护倒换操作，由所述保护通道连接所述接收设备，并同时启动一时间长度为T的计时器；Step b1, the switching controller sends a command message to the selected single board to perform a protection switching operation, connects the receiving device through the protection channel, and starts a timer with a time length of T at the same time; 步骤c1，在计时器的时间T内，如果所述倒换控制器接收到所述业务接收设备上报的告警消失消息，则说明所述保护通道良好，保持所述保护通道的连接。Step c1, within the time T of the timer, if the switching controller receives the alarm disappearance message reported by the service receiving device, it means that the protection channel is good, and the connection of the protection channel is maintained. 4、根据权利要求3所述的方法，其特征在于，在所述工作通道良好，切换保持在所述工作通道的初始条件下，所述方式三为在所述步骤c1中进一步包括：在计时器的时间T内，如果所述倒换控制器没有接收到所述业务接收设备上报的告警消失消息，则说明所述保护通道也发生了故障，则执行恢复操作，重新保持所述工作通道的连接。4. The method according to claim 3, characterized in that, when the working channel is good and the switching remains at the initial condition of the working channel, the third way is to further include in the step c1: Within the time T of the switch, if the switching controller does not receive the alarm disappearance message reported by the service receiving device, it means that the protection channel has also failed, and then performs a recovery operation to maintain the connection of the working channel again . 5、根据权利要求2所述的方法，其特征在于，在所述工作通道和所述保护通道均发生故障，切换保持在所述工作通道的初始条件下，所述方式一包括：如果所述倒换控制器接收到所述业务信号检测点检测到的告警消失信号，则说明所述工作通道的状态改为良好，继续保持所述工作通道的连接。5. The method according to claim 2, characterized in that, when both the working channel and the protection channel fail, switching remains under the initial condition of the working channel, and the first method includes: if the When the switching controller receives the alarm disappearance signal detected by the service signal detection point, it indicates that the status of the working channel is changed to good, and the connection of the working channel is continued. 6、根据权利要求5所述的方法，其特征在于，在所述工作通道和所述保护通道均发生故障，切换保持在所述工作通道的初始条件下，所述方式二包括：6. The method according to claim 5, characterized in that, when both the working channel and the protection channel fail, switching remains under the initial conditions of the working channel, and the second method includes: 步骤a2，在所述倒换控制器没有接收到所述业务信号检测点检测到的告警消失信号的前提下，如果所述倒换控制器接收到所述保护通道光检测点上报的告警消失消息，则说明所述保护通道的状态改为良好；Step a2, on the premise that the switching controller does not receive the alarm disappearance signal detected by the service signal detection point, if the switching controller receives the alarm disappearance message reported by the protection channel optical detection point, then Indicates that the status of the protection channel is changed to good; 步骤b2，所述倒换控制器发送命令报文给所述选择单板来执行保护倒换操作，由所述保护通道连接所述接收设备，并同时启动一时间长度为T的计时器；Step b2, the switching controller sends a command message to the selected single board to perform a protection switching operation, connects the receiving device through the protection channel, and starts a timer with a time length of T at the same time; 步骤c2，在计时器的时间T内，如果所述倒换控制器接收到所述业务接收设备上报的告警消失消息，则说明所述保护通道良好，保持所述保护通道的连接。Step c2, within the time T of the timer, if the switching controller receives the alarm disappearance message reported by the service receiving device, it means that the protection channel is good, and the connection of the protection channel is maintained. 7、根据权利要求6所述的方法，其特征在于，在所述工作通道和所述保护通道均发生故障，切换保持在所述工作通道的初始条件下，所述方式三为在所述步骤c2中进一步包括：在计时器的时间T内，如果所述倒换控制器没有接收到所述业务接收设备上报的告警消失消息，则说明所述保护通道还是故障，则执行恢复操作，重新保持所述工作通道的连接。7. The method according to claim 6, characterized in that, when both the working channel and the protection channel fail, switching remains under the initial condition of the working channel, and the third method is that in the step c2 further includes: within the time T of the timer, if the switching controller does not receive the alarm disappearance message reported by the service receiving device, it means that the protection channel is still faulty, and then perform a recovery operation to maintain all connection to the working channel described above. 8、根据权利要求2所述的方法，其特征在于，在所述工作通道故障，所述保护通道良好，切换保持在所述保护通道的初始条件下，所述方式三包括：如果所述倒换控制器接收到所述保护通道光检测点上报的告警产生消息，则所述倒换控制器发送命令报文给所述选择单板执行倒换恢复操作，恢复到所述工作通道的连接。8. The method according to claim 2, characterized in that, when the working channel fails, the protection channel is good, and switching remains under the initial condition of the protection channel, and the third method includes: if the switching When the controller receives the alarm generation message reported by the optical detection point of the protection channel, the switching controller sends a command message to the selection board to perform a switching recovery operation, and restore the connection to the working channel. 9、根据权利要求8所述的方法，其特征在于，在所述工作通道故障，所述保护通道良好，切换保持在所述保护通道的初始条件下，所述方式一包括：9. The method according to claim 8, characterized in that, when the working channel fails, the protection channel is good, and switching remains under the initial conditions of the protection channel, and the first method includes: 步骤a3，在所述倒换控制器没有接收到所述业务信号检测点检测到的告警产生消息的前提下，如果所述倒换控制器接收到所述工作通道光检测点上报的告警消失消息，则说明所述工作通道的状态改为良好；Step a3, on the premise that the switching controller does not receive the alarm generation message detected by the service signal detection point, if the switching controller receives the alarm disappearance message reported by the optical detection point of the working channel, then Indicates that the status of the working channel is changed to good; 步骤b3，所述倒换控制器发送命令报文给所述选择单板来执行保护恢复操作，由所述工作通道连接所述接收设备，并同时启动一时间长度为T的计时器；Step b3, the switching controller sends a command message to the selected single board to perform a protection recovery operation, connects the receiving device through the working channel, and starts a timer with a time length of T at the same time; 步骤c3，在计时器的时间T内，如果所述倒换控制器接收到所述业务接收设备上报的告警消失消息，则确认所述工作通道良好，保持所述工作通道的连接。Step c3: within the time T of the timer, if the switching controller receives the alarm disappearance message reported by the service receiving device, it confirms that the working channel is good, and keeps the connection of the working channel. 10、根据权利要求9所述的方法，其特征在于，在所述工作通道故障，所述保护通道良好，切换保持在所述保护通道的初始条件下，所述方式二为在所述步骤c3中进一步包括：在计时器的时间T内，如果所述倒换控制器没有接收到所述业务接收设备上报的告警消失消息，则所述工作通道仍然故障，所述倒换控制器控制所述选择单板执行倒换操作，倒换到所述保护通道并保持所述保护通道的连接。10. The method according to claim 9, characterized in that, when the working channel is faulty, the protection channel is good, and the switching remains under the initial conditions of the protection channel, and the second method is that in the step c3 It further includes: within the time T of the timer, if the switching controller does not receive the alarm disappearance message reported by the service receiving equipment, the working channel is still faulty, and the switching controller controls the selection menu The board performs a switching operation, switching to the protection channel and maintaining the connection of the protection channel. 11、根据权利要求3至10中任意一项权利要求所述的方法，其特征在于，所述时间T的长度大于或等于所述选择单板执行倒换所需的最大时间和所述接收设备检测确认告警消失所需的最大时间之和。11. The method according to any one of claims 3 to 10, wherein the length of the time T is greater than or equal to the maximum time required for the selected board to perform switching and the maximum time required for the receiving device to detect The sum of the maximum time required to confirm that the alarm disappears. 12、一种在接收设备共享配置下的光网络保护触发装置，其特征在于，包括选择单板、业务接收设备和自动保护倒换控制器；12. An optical network protection trigger device under shared configuration of receiving equipment, characterized in that it includes a selection board, service receiving equipment and an automatic protection switching controller; 所述选择单板将工作通道或保护通道连接到所述接收设备；The selection single board connects the working channel or the protection channel to the receiving device; 所述倒换控制器用于：根据工作通道光检测点、保护通道光检测点和所述接收设备的业务信号检测点的检测结果，判断所述工作通道和保护通道是否发生故障，并控制所述选择单板遵照如下方式进行切换：如果所述工作通道良好，则切换保持在所述工作通道；如果所述工作通道故障，所述保护通道良好，则切换保持在所述保护通道；如果所述工作通道故障，所述保护通道故障，则切换保持在所述工作通道。The switching controller is used to: judge whether the working channel and the protection channel fail according to the detection results of the working channel optical detection point, the protection channel optical detection point, and the service signal detection point of the receiving device, and control the selection The board performs switching in the following manner: if the working channel is good, the switching remains in the working channel; if the working channel fails and the protection channel is good, the switching remains in the protection channel; channel failure, if the protection channel fails, then the switching remains in the working channel.
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