WO2024002275A1

WO2024002275A1 - Trunk optical path protection method and system, optical matrix device, electronic device, and medium

Info

Publication number: WO2024002275A1
Application number: PCT/CN2023/104088
Authority: WO
Inventors: 余辰东
Original assignee: 中兴通讯股份有限公司
Priority date: 2022-06-29
Filing date: 2023-06-29
Publication date: 2024-01-04
Also published as: CN117353806A

Abstract

The present disclosure provides a trunk optical path protection method and system, an optical matrix device, an electronic device, and a computer readable medium. The trunk optical path protection method comprises: receiving switching action information which is sent by an optical line terminal and is based on a first correspondence and a second correspondence, wherein the first correspondence is the correspondence between main PON ports in a main PON port cluster and incoming interfaces of the optical matrix device, the second correspondence is the correspondence between backup PON ports in a backup PON port cluster and outgoing interfaces of the optical matrix device, and the number of the backup PON ports in the backup PON port cluster is smaller than or equal to the number of the main PON ports in the main PON port cluster; and controlling, according to the switching action information, a first optical network unit group connected to a first main PON port to be connected to a first backup PON port selected from the backup PON port cluster, wherein the first main PON port is an abnormal main PON port in the main PON port cluster. Figure 5

Description

Backbone optical path protection methods and systems, optical matrix equipment, electronic equipment, media

Relevant public cross-references

This disclosure requires the priority of a Chinese patent application submitted to the State Intellectual Property Office on June 29, 2022, with the publication number CN202210755723.7 and the invention title "Backbone optical path protection method and system, optical matrix equipment, electronic equipment, media" , the entire contents of which are incorporated into this disclosure by reference.

Technical field

Embodiments of the present disclosure relate to, but are not limited to, the field of communication technology, and in particular to backbone optical path protection methods and systems, optical matrix equipment, electronic equipment, and computer-readable media.

Background technique

In xPON of passive optical network (PON, Passive Optical Network), the common networking system is shown in Figure 1. The system consists of network management server 101, optical line terminal (OLT, Optical Line Terminal) 102, optical distribution network ( ODN, Optical Distribution Network) 103 and several optical network units (ONU, Optical Network Unit) 104. As a central office device, OLT 102 connects and aggregates multiple ONUs 104 in units of PON ports through ODN103. ONU 104 realizes access to user services, thereby realizing functions such as data services and configuration management.

In traditional PON, multiple ONUs 104 are connected by PON port as a unit to realize a point-to-multipoint (P2MP, Point To Multiply Point) topology, where point refers to the PON port of OLT 102 and multipoint refers to PON. Multiple ONU104 connected under the port. In this P2MP topology, in the ODN 103 connected between the PON port of the OLT 102 and the ONU 104, the aggregation of multiple ONU 104 connections is generally achieved through optical splitters. The optical splitters in the network generally achieve multi-level splitting through cascade. The optical splitter directly connected to the PON port of the OLT 102 is called a primary optical splitter, the optical splitter connected to the primary optical splitter is called a secondary optical splitter, and so on. The optical link connecting the PON port of the OLT102 and the first-level optical splitter is called the backbone optical path or the backbone optical fiber (the backbone optical path will be used to describe the following, and the backbone optical path and the backbone optical fiber are equivalent), and other optical links are called branches. Optical path or branch optical fiber (the following paragraphs will use branch optical path for description, and branch optical path and branch optical fiber are equivalent).

Contents of the invention

Embodiments of the present disclosure provide a backbone optical path protection method and system, optical matrix equipment, electronic equipment, and computer-readable media.

In a first aspect, embodiments of the present disclosure provide a backbone optical path protection method, which is applied to optical matrix equipment. The method includes: receiving switching action information based on a first correspondence relationship and a second correspondence relationship sent by an optical line terminal, wherein: The first correspondence is the correspondence between the main PON port in the primary passive optical network PON port cluster and the inlet interface of the optical matrix device, and the second correspondence is the backup PON port in the backup PON port cluster and the The corresponding relationship between the outbound interfaces of the optical matrix device, the number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster; according to the switching action information control and the first The first optical network unit group connected to the main PON port is connected to the first backup PON port selected from the backup PON port cluster, wherein the first main PON port is the main PON port in the main PON port cluster that has an abnormality.

In a second aspect, embodiments of the present disclosure provide a backbone optical path protection method, which is applied to optical line terminals. The method includes: obtaining a first correspondence relationship and a second correspondence relationship, wherein the first correspondence relationship is a primary passive optical path protection method. The corresponding relationship between the main PON port in the network PON port cluster and the incoming interface of the optical matrix device, and the second corresponding relationship is the corresponding relationship between the backup PON port in the backup PON port cluster and the outgoing interface of the optical matrix device. Relationship; when it is detected that the first primary PON port in the primary PON port cluster is abnormal, select the first backup PON port from the backup PON port cluster, wherein the number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster; migrate the data of the first primary PON port to the first backup PON port; and The optical matrix device sends switching action information, and the switching action information is used to instruct the optical matrix device to connect the first optical network unit group connected to the first main PON port to the first backup PON port.

In a third aspect, embodiments of the present disclosure provide a backbone optical path protection method, which is applied to optical line terminals. The method includes: obtaining a first correspondence relationship and a second correspondence relationship, wherein the first correspondence relationship is a primary passive optical path protection method. The corresponding relationship between the main PON port in the network PON port cluster and the incoming interface of the optical matrix device, and the second corresponding relationship is the corresponding relationship between the backup PON port in the backup PON port cluster and the outgoing interface of the optical matrix device. Relationship; when an abnormality is detected in the first primary PON port in the primary passive optical network PON port cluster, select the first backup PON port from the backup PON port cluster, wherein the backup PON port in the backup PON port cluster The number of PON ports is less than or equal to the main PON port in the main PON port cluster. Quantity; migrate the data of the first main PON port to the first backup PON port; control the first optical fiber connected to the first main PON port according to the first corresponding relationship and the second corresponding relationship. The network unit group is connected to the first backup PON port.

In a fourth aspect, embodiments of the present disclosure provide an electronic device, including: at least a first processor; a first memory, where at least one first program is stored on the first memory. When the at least one first program is When the at least one first processor is executed, any one of the above trunk optical path protection methods is implemented.

In a fifth aspect, embodiments of the present disclosure provide a computer-readable medium. A computer program is stored on the computer-readable medium. When the computer program is executed by a processor, any one of the above-mentioned backbone optical path protection methods is implemented.

In a sixth aspect, embodiments of the present disclosure provide an optical matrix device, including: at least a second processor; a second memory, at least one second program stored on the second memory. When the at least one second program When executed by the at least one second processor, any one of the above trunk optical path protection methods is implemented.

In a seventh aspect, an embodiment of the present disclosure provides an electronic device, including: at least a third processor; a third memory, at least one third program stored on the third memory. When the at least one third program is When the at least one third processor is executed, any one of the above trunk optical path protection methods is implemented.

In an eighth aspect, embodiments of the present disclosure provide a backbone optical path protection system, including: an optical line terminal and an optical matrix device, wherein the optical line terminal is configured to obtain a first correspondence relationship and a second correspondence relationship; wherein, the optical line terminal The first correspondence is the correspondence between the main PON port in the primary passive optical network PON port cluster and the inlet interface of the optical matrix device, and the second correspondence is the backup PON port in the backup PON port cluster and the optical matrix device. The corresponding relationship between the outgoing interfaces; when an abnormality is detected in the first primary PON port in the primary passive optical network PON port cluster, select the first backup PON port from the backup PON port cluster, wherein, the The number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster; the data of the first primary PON port is migrated to the first backup PON port; according to the first A corresponding relationship and the second corresponding relationship send switching action information to the optical matrix device. The switching action information is used to instruct the optical matrix device to connect the first optical network unit group connected to the first main PON port. to the first backup PON port; the optical matrix device is configured to receive switching action information based on the first correspondence and the second correspondence sent by the optical line terminal; and control the communication with the first correspondence according to the switching action information. The first optical network unit group connected to the main PON port is connected to the first backup PON port.

Description of drawings

Figure 1 is a schematic diagram of the architecture of a networking system in related technologies;

Figure 2 is a schematic architectural diagram of a backbone optical path protection system provided by an embodiment of the present disclosure;

Figure 3 is a schematic diagram 1 of the composition of an optical matrix device provided by an embodiment of the present disclosure;

Figure 4 is a schematic diagram 2 of the composition of an optical matrix device provided by an embodiment of the present disclosure;

Figure 5 is a flow chart of a backbone optical path protection method for an OLT when the optical matrix device provided by an embodiment of the present disclosure is used as an external device;

Figure 6 is a flow chart of a backbone optical path protection method applied to an optical matrix device when the optical matrix device provided by another embodiment of the present disclosure is used as an external device;

Figure 7(a) is a schematic diagram 1 of the composition of the first optical matrix module provided by an embodiment of the present disclosure;

Figure 7(b) is a schematic diagram 2 of the composition of the first optical matrix module provided by an embodiment of the present disclosure;

Figure 7(c) is a schematic diagram 3 of the composition of the first optical matrix module provided by an embodiment of the present disclosure;

Figure 8(a) is a schematic diagram 1 of the composition of the second optical matrix module provided by an embodiment of the present disclosure;

Figure 8(b) is a schematic diagram 2 of the composition of the second optical matrix module provided by an embodiment of the present disclosure;

Figure 9 is a flow chart of a backbone optical path protection method applied to an OLT when the optical matrix device provided by another embodiment of the present disclosure is built into the OLT;

Figure 10 is a schematic diagram of the composition of an optical matrix device provided by another embodiment of the present disclosure;

FIG. 11 is a schematic diagram of the composition of an electronic device provided by another embodiment of the present disclosure.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the backbone optical path protection method and system, optical matrix equipment, electronic equipment, and computer-readable media provided by the present disclosure are described in detail below in conjunction with the accompanying drawings.

Example embodiments will be described more fully below with reference to the accompanying drawings, which may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully understand the scope of the disclosure to those skilled in the art.

The embodiments of the present disclosure and the features in the embodiments may be combined with each other without conflict.

As used herein, the term "and/or" includes any and all of at least one associated listed item combination.

The terminology used herein is used to describe particular embodiments only and is not intended to limit the disclosure. As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms "comprising" and/or "made of" are used in this specification, the presence of stated features, integers, steps, operations, elements and/or components is specified but does not exclude the presence or Add at least one other feature, integer, step, operation, element, component and/or group thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be construed to have meanings consistent with their meanings in the context of the relevant art and the present disclosure, and will not be construed as having idealized or excessive formal meanings, Unless expressly so limited herein.

It can be seen from the above networking that if the backbone light path is interrupted, all ONU104 services under the backbone light path will be interrupted. Therefore, it is necessary to protect the backbone light path and change the original first-level optical splitter from 1:N to 2: N, where 1 and 2 refer to the number of main optical fibers of the optical splitter, that is, the main optical path becomes 2, and the 2 main optical paths work in primary and backup mode. ONU104 is connected to the corresponding PON port of OLT 102 through the main optical path and is in working mode. The PON port in this state is called the active PON port, and the trunk optical path connected to the active PON port is called the active trunk optical path.

When the main trunk optical path is abnormal, the OLT 102 controls the service switching to the backup trunk optical path. The ONU 104 is connected to the corresponding PON port of the OLT 102 through the backup trunk optical path. The PON port is called the backup PON port. This protection mechanism is called trunk fiber protection. (i.e. TYPEB protection). The TYPEB protection mechanism can protect ONU services under the PON port. However, this will bring about two problems: 1) Since the main and backup optical paths are used to connect the main and backup PON ports respectively, the resource utilization rate of the OLT's PON port will decrease, up to 50%, which may lead to the increase of existing PON ports. With the number of ports, it is difficult to increase the data transmission rate or throughput, and it is difficult to access more ONUs; 2) Since the TYPEB protection mechanism requires the use of two backbone optical paths, and in fact the operator's optical fiber resources are limited, it may There is no guarantee that all trunk optical paths will adopt this protection method, which means that some trunk optical paths will not be protected. If you want all trunk optical paths to be protected, the layout cost will be very high.

This disclosed embodiment improves the architecture of the backbone optical path protection system implemented using the TYPEB protection mechanism in related technologies. As shown in Figure 2, the backbone optical path protection system in this disclosed embodiment includes: OLT 201 and optical matrix device 202. It may also include a network management server (not shown in Figure 2), ODN 203 and ONU (not shown in Figure 2).

Among them, the network management server is responsible for the configuration, management or maintenance of OLT 201 and its affiliated ONUs; And manage the historical information of OLT 201 and ONU as well as related alarm and notification messages. And based on the PON protection switching-related alarms or notification messages reported by the OLT 201, dynamic maintenance and reminder manual intervention of the relevant network can be realized.

OLT 201, realizes ONU registration and maintenance based on PON port.

ODN 203 is used to connect different numbers of ONUs under OLT 201. As a direct physical connection channel between OLT 201 and ONU, it may be composed of multiple physical devices, including but not limited to:

The trunk optical path (main and backup) is used to connect the primary optical splitter and the corresponding PON port of the OLT. Generally, a single PON port is used, but when the protection mode is used, two main and backup PON ports are enabled.

Optical splitters (one or more levels) are generally based on ODN network planning and network construction. One or more optical splitters are combined to achieve the splitting ratio. Generally, the maximum splitting ratio is 1:128 or 1:256. Since the splitter will Introducing light attenuation, so the optical splitter cascade generally does not exceed three levels. Among them, the optical splitter directly connected to the OLT PON port is a first-level optical splitter, and the other cascaded optical splitters are called second-level optical splitters or third-level optical splitters (referred to as n-level optical splitters).

Branch optical fiber, the optical path connecting the multi-stage optical splitters and the optical path directly connected to the ONU are called branch optical fibers.

ONU, used to access the terminal equipment of home users, accepts the management of OLT 201, receives the link identifier assigned by OLT 201 during the registration process to complete ONU registration, and uploads data in the uniformly allocated time slot window according to OLT 201 to complete service forwarding.

Among them, the optical matrix device 202 is used to connect two or more backup backbone optical paths to the corresponding backup PON port on the OLT 201.

In some exemplary embodiments, the optical matrix device 202 may be built into the OLT 201, and may be connected to the m spare PON ports of the OLT 201 through m internal links, or may be connected to the OLT 201 through m+1 internal links. The connection of m+1 backup PON ports. In other exemplary embodiments, the optical matrix device 202 can also be used as an external device to be connected to the m spare PON ports of the OLT 201 through m optical fibers, or to the m+1 spare PON ports of the OLT 201 through m+1 optical fibers. PON port connection.

In some exemplary embodiments, as shown in Figures 3 and 4, the optical matrix device 202 includes: a trunk optical splitter 301, a registration access module 302, a control module 303, a first optical matrix module 304 and a second optical matrix module. 305.

In some exemplary embodiments, the registration access module 302 and the control module 303 can be implemented using a processor and a memory. Programs are stored in the memory. When the program stored in the memory is executed by the processor, Now register the functions of the access module 302 and the control module 303.

In some exemplary embodiments, the backbone optical splitter 301 may be a 1:2 optical splitter. In this case, the optical matrix device 202 includes m outlet interfaces and n inlet interfaces. Among them, these m outgoing interfaces are respectively connected to m backup PON ports of OLT201. Specifically, each of the m outgoing interfaces is connected to one of the m standby PON ports of the OLT201, and different standby PON ports are connected to different outgoing interfaces. The backbone optical path of the backbone optical splitter 301 is connected to one of the output interfaces of the optical matrix device 202. As shown in Figure 3, the output interface I1 is connected. The remaining m-1 output interfaces of the optical matrix device 202 are respectively connected to the first optical matrix module 304. m-1 trunk optical path connections. These n incoming interfaces are respectively connected to the backup backbone optical path corresponding to the first-level optical splitter through n optical fibers, and are finally connected to each ONU. Each of the n incoming interfaces is connected to the backup backbone optical path of a first-level optical splitter. Different The primary optical splitter connected to the input interface is different, and m is smaller than n.

In some exemplary embodiments, the trunk optical splitter 301 may also be a 2:2 optical splitter, and the two trunk optical paths of the trunk optical splitter 301 have a master-standby relationship. In this case, the optical matrix device 202 includes m+1 egress interfaces and n ingress interfaces. Among them, these m+1 outgoing interfaces are respectively connected to m+1 backup PON ports of OLT201. Specifically, each of the m+1 outbound interfaces is connected to one of the m+1 spare PON ports of the OLT201, and the spare PON ports connected to different outbound interfaces are different. The two trunk optical paths of the trunk optical splitter 301 are respectively connected to two outgoing interfaces of the optical matrix device 202. As shown in Figure 4, the outgoing interfaces I1 and I2 are connected, and the remaining m-1 outgoing interfaces of the optical matrix device 202 are connected. They are respectively connected to the m-1 trunk optical paths of the first optical matrix module 304. These n incoming interfaces are respectively connected to the backup backbone optical path corresponding to the first-level optical splitter through n optical fibers, and are finally connected to each ONU. Each of the n incoming interfaces is connected to the backup backbone optical path of a first-level optical splitter. Different The primary optical splitter connected to the input interface is different, and m is smaller than n.

In some exemplary embodiments, the outbound interface connected to the backbone optical path of the backbone optical splitter is called the basic management outbound interface, and the backup PON port connected to the basic management outbound interface is called the basic registration management PON port. The basic registration management PON port can be manually specified through network planning, or it can be automatically identified by the OLT after receiving the registration signal of the optical matrix device.

It should be noted that the main trunk optical path of the first-level optical splitter is directly connected to the main PON port of the OLT.

In some exemplary embodiments, the registration access module 302 is connected to the outbound interface of the optical matrix device 202 through the trunk optical splitter 301, and is used to realize the registration access of the optical matrix device 202 on the OLT 201 through the internal virtual registration link D0. Connect to the first optical matrix module 304 for periodically connecting to any one of the m outgoing interfaces when the status of the m outgoing interfaces is idle. The port initiates a virtual registration signal. Specifically, when the trunk optical splitter 301 is a 1:2 optical splitter, the m outlet interfaces refer to the interface I1 to the outlet interface Im; when the trunk optical splitter 301 is a 2:2 optical splitter, the m outlet interfaces It refers to interface I1, outgoing interface I3 to outgoing interface I(m+1), or outgoing interface I2, outgoing interface I3 to outgoing interface I(m+1).

In some exemplary embodiments, the control module 303 is used to control the registration access module 302 to implement corresponding functions, and to control the connection or disconnection of the first optical matrix module 304 and the second optical matrix module 305.

In some exemplary embodiments, the first optical matrix module 304 is used to connect or disconnect the outgoing interface and the internal interface under the control of the control module 303. As shown in Figures 3 and 4, the m-1 output interfaces of the optical matrix device 202 are respectively connected to the m-1 trunk optical paths of the first optical matrix module 304, and the m internal interfaces of the optical matrix device 202 are respectively connected to the first optical matrix module 304. The m branch optical paths of the optical matrix module 304 are connected, and the connection between any one of the m output interfaces of the optical matrix device 202 and any one of the m internal interfaces of the optical matrix device 202 realizes any first An internal link is connected.

In some exemplary embodiments, the second optical matrix module 305 is used to connect or disconnect the internal interface and the incoming interface under the control of the control module 303. As shown in Figures 3 and 4, the m internal interfaces of the optical matrix device 202 are respectively connected to the m trunk optical paths of the second optical matrix module 304, and the n input interfaces of the optical matrix device 202 are respectively connected to the second optical matrix module 304. The n branch optical paths are connected, and the connection between any one of the m internal interfaces of the optical matrix device 202 and any one of the n incoming interfaces of the optical matrix device 202 realizes any second internal link. of connection.

The following is an introduction to the implementation process of the backbone light path protection method in OLT and optical matrix equipment based on the architecture of the backbone light path protection system of the present disclosure.

First, the implementation process of the backbone optical path protection method in OLT and optical matrix equipment is described when the optical matrix equipment is used as an external device.

Figure 5 is a flow chart of a backbone optical path protection method applied to an OLT when the optical matrix device provided by an embodiment of the present disclosure is used as an external device.

In the first aspect, referring to Figure 5, an embodiment of the present disclosure provides a backbone optical path protection method, which can be applied to OLT. The method includes:

Step 500: Obtain the first correspondence relationship and the second correspondence relationship; wherein, the first correspondence relationship is the correspondence relationship between the main PON port in the main PON port cluster and the inlet interface of the optical matrix device, and the second correspondence relationship is the backup PON port. Correspondence between the backup PON port in the cluster and the outbound interface of the optical matrix device.

In some exemplary embodiments, the main PON port cluster includes A collection of main PON ports connected to the main backbone optical path corresponding to the backup backbone optical path.

In some exemplary embodiments, the number of primary PON ports in the primary PON port cluster can be determined based on the number of PON ports in the same OLT that have trunk optical path interruptions at the same time. The number of PON ports with trunk optical path interruptions at the same time can refer to the number of PON ports with unrecovered PON offline (PON LOS) alarms within the same time period. For example, the number of main PON interfaces in the main PON interface cluster is the number of PON interfaces in the same OLT whose main optical path is interrupted at the same time. For another example, the number of main PON ports in the main PON port cluster is the sum of the number of PON ports that have trunk optical path interruptions in the PON ports of the same OLT at the same time and the preset value. The preset value is within the tolerable range.

In some exemplary embodiments, the backup PON port cluster includes a set of backup PON ports connected to the egress interface of the optical matrix device.

The following describes respectively how to obtain the first correspondence relationship and the second correspondence relationship.

(1) How to obtain the first correspondence relationship.

In some exemplary embodiments, the first correspondence relationship may be confirmed through network planning.

In some exemplary embodiments, obtaining the first correspondence includes: receiving the first correspondence sent by the light matrix device.

In some exemplary embodiments, obtaining the first correspondence includes: receiving a third correspondence between the ingress interface and the optical network unit sent by the optical matrix device, and according to the third correspondence, and between the main PON port and the optical network unit. The fourth correspondence relationship is to establish or update the first correspondence relationship corresponding to the second incoming interface; wherein the second incoming interface is any incoming interface.

In some exemplary embodiments, according to the third correspondence relationship and the fourth correspondence relationship between the main PON port and the optical network unit, establishing or updating the first correspondence relationship corresponding to the second ingress interface includes: according to whether there is a second ingress interface. The first corresponding relationship corresponding to the interface, and whether the main PON port and the third main PON port in the first corresponding relationship corresponding to the second incoming interface are the same, establishing or updating the first corresponding relationship corresponding to the second incoming interface; wherein, the first corresponding relationship corresponding to the second incoming interface The three main PON ports are the main PON ports in the fourth corresponding relationship corresponding to the optical network unit in the third corresponding relationship corresponding to the second incoming interface.

In some exemplary embodiments, establishing or updating is performed based on whether there is a first corresponding relationship corresponding to the second incoming interface, and whether the main PON port and the third main PON port in the first corresponding relationship corresponding to the second incoming interface are the same. The first correspondence relationship corresponding to the second inlet interface includes at least one of the following:

If there is no first corresponding relationship corresponding to the second incoming interface, establish a first corresponding relationship between the second incoming interface and the third main PON port;

When there is a first correspondence relationship corresponding to the second inlet interface, and the main PON port and the third main PON port in the first correspondence relationship corresponding to the second inlet interface are the same, the first correspondence corresponding to the second inlet interface is maintained. The main PON port in the relationship remains unchanged;

When there is a first corresponding relationship corresponding to the second incoming interface, and the main PON port and the third main PON port in the first corresponding relationship corresponding to the second incoming interface are different, the first corresponding relationship corresponding to the second incoming interface is changed. The primary PON port in the corresponding relationship is updated to the third primary PON port.

In some exemplary embodiments, the first correspondence relationship further includes: the status of the incoming interface.

In some exemplary embodiments, the method further includes: determining the status of the link connected to the second inbound interface according to the status of the second inbound interface.

In some exemplary embodiments, determining the status of the link connected to the second inbound interface based on the status of the second inbound interface includes at least one of the following:

When the status of the second incoming interface is invalid and there is an optical network unit online under the main PON port in the first correspondence corresponding to the second incoming interface, it is determined that the status of the link connected to the second incoming interface is invalid; The presence of an optical network unit under the main PON port here may refer to the existence of an optical network unit connected to the main PON port, or the existence of an optical network unit connected to the main PON port and online;

When the status of the second incoming interface is unstable and there is an optical network unit stably online under the main PON port in the first correspondence corresponding to the second incoming interface, it is determined that the status of the link connected to the second incoming interface is Unstable;

When the status of the second incoming interface is unstable and there is an optical network unit under the main PON port in the first corresponding relationship corresponding to the second incoming interface that is unstable and online, determine the first corresponding relationship corresponding to the second incoming interface. The branch optical path of the main PON port is unstable or has other interference problems.

In some exemplary embodiments, after determining the status of the link connected to the second inbound interface based on the status of the second inbound interface, the method further includes: reporting a notification message or an alarm message to the network management server.

(2) How to obtain the second correspondence relationship.

In some exemplary embodiments, obtaining the second correspondence relationship includes: detecting the status of the second backup PON port; wherein the second backup PON port is any backup PON port in the backup PON port cluster; the second backup PON port The status includes the management status and the actual usage status; when the management status of the second backup PON port is available and the actual usage status of the second backup PON port is idle, according to whether the second backup PON port is idle within a predetermined number of cycles. The virtual registration signal sent by the optical matrix device is received to establish or update the second corresponding relationship corresponding to the second backup PON port.

In some exemplary embodiments, the status of the second backup PON port is periodically detected.

In some exemplary embodiments, the status of the second backup PON port can be detected using methods well known to those skilled in the art, which will not be described again here.

For example, you can use methods such as whether there is an ONU online physically on the second backup PON port. Specifically, when the management status of the second backup PON port is occupied or disabled, the management status of the second backup PON port is unavailable and the actual usage status is NA; when there is an ONU online physically on the second backup PON port; or, When the second backup PON port is the basic registration management PON port, and there are other ONUs other than the optical matrix device online physically on the second backup PON port, the management status of the second backup PON port is occupied and the actual usage status is NA.

In some exemplary embodiments, the status of the second backup PON port includes a management status and an actual usage status. The second management state refers to the state set on the standby PON port during the management of the second standby PON port, and the actual usage state refers to the state of whether the second standby PON port is actually occupied.

In some exemplary embodiments, the management status includes, but is not limited to: at least one of available, unavailable, disabled, allocated, and the like.

In some exemplary embodiments, the actual usage status includes, but is not limited to: at least one of idle, allocated, occupied, NA, suspended, faulty, and the like.

In some exemplary embodiments, the management status of the second backup PON port can be represented by the management status flag bit, and the actual usage status of the second backup PON port can be represented by the actual usage status flag bit. For example, when the management status of the second backup PON port is occupied or disabled, the management status flag bit is a character indicating unavailability, and the actual usage status flag bit is NA; when there is an ONU online physically on the second backup PON port; or, When the second standby PON port is the basic registration management PON port, and there are other ONUs other than the optical matrix device online on the second standby PON port, the management status flag bit of the second standby PON port is a character indicating occupation. In fact, The usage status flag is NA.

In some exemplary embodiments, establishing or updating the second correspondence relationship corresponding to the second backup PON port according to whether the second backup PON port receives a virtual registration signal sent by the optical matrix device within a predetermined number of periods includes at least one of the following: :

When the second backup PON port receives the virtual registration signal sent by the optical matrix device within one cycle, the outbound interface index is obtained by parsing the virtual registration signal, and is established or updated based on the index of the second backup PON port and the outbound interface index. The second corresponding relationship corresponding to the second backup PON port;

The second backup PON port does not receive the virtual registration information sent by the optical matrix device within one cycle. In the case of the second backup PON port, the management status of the backup PON port in the second correspondence relationship corresponding to the second backup PON interface is updated to NA, and the actual usage status is updated to suspended; wherein, the backup PON port whose actual usage status is suspended is in When selecting the first backup PON port in step 500, it will not be selected;

When the second backup PON port does not receive the virtual registration signal sent by the optical matrix device within X cycles, update the management status of the backup PON port in the second correspondence relationship corresponding to the second backup PON port to NA, The actual usage status is updated to fault; where X is an integer greater than or equal to 2.

In some exemplary embodiments, the virtual registration signal includes: a registration identifier and an egress interface index.

In some exemplary embodiments, the registration identifier includes, but is not limited to, at least one of a PON media access control (MAC, Media Access Control) address, a logical ONU identifier (LOID, Logical ONU IDentifier), a serial number (SN, Serial Number), etc. one.

In some exemplary embodiments, the way to define the outbound interface index includes but is not limited to using the undefined 13th byte of the ONU serial number (Serial_number_ONU) in G.983.1 according to a certain format convention.

In some exemplary embodiments, establishing or updating the second correspondence relationship corresponding to the second backup PON port according to the index of the second backup PON port and the outbound interface index includes at least one of the following:

When the second correspondence relationship corresponding to the second backup PON port does not exist, establish a second correspondence relationship corresponding to the second backup PON port; wherein, the outbound interface in the second correspondence relationship corresponding to the established second backup PON port For the outbound interface corresponding to the parsed outbound interface index, the management status of the standby PON port in the second corresponding relationship established for a certain second PON port is available, and the actual usage status is idle;

When the second correspondence relationship corresponding to the second backup PON port exists, and the outbound interface index of the outbound interface in the second correspondence relationship corresponding to the second backup PON port is the same as the outbound interface index obtained by parsing, the second backup is maintained. The outbound interface in the second mapping relationship corresponding to the PON port remains unchanged, the management status of the second backup PON port in the second mapping relationship corresponding to the second backup PON port remains unchanged, and the actual usage status remains unchanged at "idle" ;

When a second correspondence relationship corresponding to the second backup PON port exists, and the outbound interface index of the outbound interface in the second correspondence relationship corresponding to the second standby PON port is different from the parsed outbound interface index, update the second The outbound interface in the second correspondence relationship corresponding to the standby PON port is the outbound interface corresponding to the parsed outbound interface index, and the management status of the second standby PON port in the second correspondence relationship corresponding to the second standby PON port is updated to available. , the actual usage status is updated to idle.

In some exemplary embodiments, a second correspondence relationship corresponding to the second backup PON port exists, and When the outbound interface index of the outbound interface in the second correspondence relationship corresponding to the second standby PON port is different from the outbound interface index obtained by parsing, the method further includes: reporting the second standby PON port to the network management server or operation and maintenance system. Notification message that the corresponding second correspondence relationship changes.

Step 501: When an abnormality is detected in the first primary PON port in the primary PON port cluster, select the first standby PON port from the standby PON port cluster; wherein the number of standby PON ports in the standby PON port cluster is less than or Equal to the number of primary PON ports in the primary PON port cluster.

In some exemplary embodiments, when the backbone optical splitter is a 1:2 optical splitter, the number of backup PON ports in the backup PON port cluster is less than the number of main PON ports in the main PON port cluster; when the backbone optical splitter is 2 : In the case of 2 optical splitters, the number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster.

In some exemplary embodiments, after selecting the first backup PON port from the backup PON port cluster, the method further includes: assigning the actual usage status of the first backup PON port in the second correspondence relationship corresponding to the first backup PON port. Updated to occupied.

The second correspondence here is the correspondence between the status of the backup PON port in the backup PON port cluster, the outgoing interface of the optical matrix device, and the status of the backup PON port. The status of the backup PON port includes management status and actual use status.

In some exemplary embodiments, selecting the first backup PON port from the backup PON port cluster includes at least one of the following:

In the case where there is a fifth correspondence relationship corresponding to the first main PON port among the pre-saved fifth correspondence relationships between the main PON port and the backup PON port, select the fifth correspondence relationship corresponding to the first main PON port. Spare PON port;

In the case where there is no fifth correspondence relationship between the pre-saved primary PON port and the backup PON port and there is no fifth correspondence relationship corresponding to the first primary PON port, the first primary PON port cluster is selected from the backup PON port cluster according to the preset rules. Spare PON port;

Select the first backup PON port from the backup PON port cluster according to the preset rules.

In some exemplary embodiments, before selecting the first backup PON port from the backup PON port cluster according to the preset rules, the method further includes: based on the status of all backup PON ports in the backup PON port cluster and the optical matrix device and the first backup PON port. The status of the third incoming interface connected to an optical network unit group determines whether switching is possible; if it is determined that switching is possible, continue to perform the step of selecting the first backup PON port from the backup PON port cluster according to the preset rules.

In some exemplary embodiments, determining whether switching is possible based on the status of all backup PON interfaces in the backup PON interface cluster and the status of the third incoming interface of the optical matrix device connected to the first optical network unit group includes at least one of the following:

If there is a backup PON port in the backup PON port cluster whose management status is available but whose actual usage status is idle, and the status of the third incoming interface is valid, it is determined that the switch can be performed;

If there is no standby PON port in the standby PON port cluster that has a management status of available and an actual use status of idle, or the status of the third incoming interface is not valid, it is determined that the switch cannot be performed.

In some exemplary embodiments, when it is determined that switching is not possible, the method further includes: reporting an alarm message to the network management server.

The following describes the preset rules used to select the first backup PON port.

(1) Select the first backup PON port based on the status of the backup PON port and the priority of the outgoing interface.

In some exemplary embodiments, selecting the first backup PON port from the backup PON port cluster according to preset rules includes: based on the status of all backup PON ports in the backup PON port cluster and the second correspondence relationship corresponding to all backup PON ports. Based on the priority of the outbound interface, select the first backup PON port from the backup PON port cluster.

In some exemplary embodiments, the first backup PON interface is selected from the backup PON interface cluster based on the status of all backup PON interfaces in the backup PON interface cluster and the priority of the outbound interface in the second correspondence relationship corresponding to all backup PON interfaces. The PON ports include: from the backup PON ports in the corresponding second mapping relationship in the backup PON port cluster, the management status is available and the actual use status is idle. Select the backup with the highest priority of the outbound interface in the corresponding second mapping relationship. PON port.

In some exemplary embodiments, when an abnormality occurs in the selected backup PON port and the first primary PON port has not yet recovered, the backup PON is re-selected from other backup PON ports that are available in the management status but idle in actual use. mouth.

In some exemplary embodiments, the number of priority levels of the outbound interfaces of the optical matrix device is the same as the number of working outbound interfaces of the optical matrix device.

In some exemplary embodiments, 0 to m may be used to represent the priority of the outbound interface. For example, the lowest priority is 0 and the highest priority is m. The higher the priority, the higher the corresponding value; or, the lowest priority is m and the highest priority is 0. The higher the priority, the lower the corresponding value.

In some exemplary embodiments, before selecting the first backup PON port from the backup PON port cluster, the method further includes: determining whether the backup PON port in the second corresponding relationship corresponding to the third outgoing interface occurs. changes, and the status of the backup PON port in the second correspondence relationship corresponding to the third outbound interface determines or updates the priority of the third outbound interface.

The following describes how to determine the priority of an outbound interface.

In some exemplary embodiments, the status of the backup PON port includes management status and actual usage status.

In some exemplary embodiments, the third egress interface is determined or updated based on whether the backup PON port in the second correspondence relationship changes and the status of the backup PON port in the second correspondence relationship corresponding to the third egress interface. The priority of the three outgoing interfaces includes at least one of the following:

The backup PON port in the second correspondence relationship corresponding to the third outbound interface remains unchanged within the first preset time period, and the management status of the backup PON port in the second correspondence relationship corresponding to the third outbound interface remains unchanged in the first preset time period. If it is available within the preset time period and the actual usage status is idle within the first preset time period, increase the priority of the third outbound interface by one level; for example, the lowest priority is 0 and the highest priority is m , the higher the priority, the higher the corresponding value, then increasing the priority by one level means increasing the priority by 1; or, the lowest priority is m, the highest priority is 0, the higher the priority, the higher the corresponding value. If it is low, then raising the priority by one level means reducing the priority by 1;

The backup PON port in the second correspondence relationship corresponding to the third outbound interface changes within the first preset time period, and the management status of the backup PON port in the second correspondence relationship corresponding to the third outbound interface changes in the first preset time period. Assuming that it is available during the time period and the actual usage status is idle during the first preset time period, the priority of the third outbound interface is lowered by one level; for example, the lowest priority is 0 and the highest priority is m, The higher the priority, the higher the corresponding value. Then lowering the priority by one level means reducing the priority by 1; or, the lowest priority is m and the highest priority is 0. The higher the priority, the lower the corresponding value. , then lowering the priority by one level means increasing the priority by 1;

When the management status of the backup PON port in the second correspondence relationship corresponding to the third outbound interface is NA within the first preset time period, and the actual usage status is suspended within the first preset time period, the second The priority of the three-output interface is reduced by two levels; for example, the lowest priority is 0 and the highest priority is m. The higher the priority, the higher the corresponding value. Then reducing the priority by two levels means reducing the priority by 2; Or, the lowest priority is m and the highest priority is 0. The higher the priority, the lower the corresponding value. Then lowering the priority by two levels means increasing the priority by 2;

When the management status of the backup PON port in the second correspondence relationship corresponding to the third outbound interface is NA within the first preset time period, and the actual usage status is fault within the first preset time period, the third Reduce the priority of the outbound interface by three levels; for example, the lowest priority is 0 and the highest priority is m. The higher the priority, the higher the corresponding value. Then reducing the priority by three levels means reducing the priority by 3; or , lowest priority is m, the highest priority is 0. The higher the priority, the lower the corresponding value. Then reducing the priority by three levels means increasing the priority by 3;

In the case where the third outbound interface is the basic management outbound interface, the priority of the third outbound interface is determined to be the lowest priority among the priorities of the outbound interfaces that meet the preset conditions; where the basic management outbound interface is connected to the optical matrix device The outgoing interface of the trunk optical path of the trunk optical splitter, the outgoing interface that meets the preset conditions is the outgoing interface corresponding to the management status of the backup PON port in the second correspondence relationship is available, and the actual usage status is idle.

In some exemplary embodiments, the first preset time period is greater than X times the status detection period of the backup PON port.

(2) Divide the backup PON port cluster into two sub-clusters, the guaranteed sub-cluster and the shared sub-cluster, and prioritize the selection of the backup PON port that guarantees the high-priority main PON port.

In some exemplary embodiments, the spare PON port cluster includes a guaranteed sub-cluster and a shared sub-cluster, and the number of spare PON ports in the guaranteed sub-cluster is less than the number of spare PON ports in the shared sub-cluster.

That is to say, the backup PON port cluster is divided into two sub-clusters: guaranteed sub-cluster and shared sub-cluster. The backup PON port in the guaranteed sub-cluster is first allocated to the high-priority main PON port. When the backup PON port in the guaranteed sub-cluster is After exhaustion, the backup PON port in the shared sub-cluster can be allocated to the high-priority main PON port, that is, the high-priority main PON port is allocated from the guaranteed sub-cluster to the shared sub-cluster; the non-high-priority main PON port Allocate from shared subcluster to guaranteed subcluster.

In some exemplary embodiments, a high-priority main PON port refers to a main PON port with a priority higher than a preset priority threshold.

In some exemplary embodiments, the priority of the main PON port may be determined based on the relevant parameters of the main PON port, such as at least one of the number of ONUs, service type, uplink and downlink service traffic, etc.

In some exemplary embodiments, selecting the first backup PON port from the backup PON port cluster according to preset rules includes at least one of the following:

When the priority of the first primary PON port is higher than the preset priority threshold and the resources of the guaranteed sub-cluster are not exhausted, select the first backup PON port from the guaranteed sub-cluster;

When the priority of the first primary PON port is higher than the preset priority threshold and the resources of the sub-cluster are guaranteed to be exhausted, select the first backup PON port from the shared sub-cluster;

When the priority of the first primary PON port is lower than the preset priority threshold and the resources of the shared subcluster are not exhausted, select the first backup PON port from the shared subcluster.

In some exemplary embodiments, whether the resources of the guaranteed sub-cluster are exhausted may be determined based on the duty cycle of the guaranteed sub-cluster.

In some exemplary embodiments, the guaranteed duty cycle of the sub-cluster is the ratio of the number of spare PON ports in the guaranteed sub-cluster with the management status being available and the actual use status being idle, and the guaranteed number of spare PON ports in the sub-cluster.

In some exemplary embodiments, determining whether the resources of the guaranteed sub-cluster are exhausted according to the duty cycle of the guaranteed sub-cluster includes at least one of the following:

Under the condition that the duty cycle of the sub-cluster is guaranteed to be equal to 1, it is determined that the resources of the sub-cluster are exhausted;

When the duty cycle of the sub-cluster is guaranteed to be greater than 1, it is determined that the resources of the sub-cluster are not exhausted.

In some exemplary embodiments, when the duty cycle of the sub-cluster is guaranteed to be greater than the first preset threshold, it is determined that the resources of the sub-cluster are sufficient; when the duty cycle of the sub-cluster is guaranteed to be greater than the second preset threshold, and If the duty cycle is less than the first preset threshold, it is determined that the resources of the guaranteed sub-cluster are less; if the duty cycle of the guaranteed sub-cluster is greater than 1 and less than the second preset threshold, it is determined that the resources of the guaranteed sub-cluster are about to be exhausted.

In some exemplary embodiments, whether the resources of the shared sub-cluster are exhausted may be determined based on the duty cycle of the shared sub-cluster.

In some exemplary embodiments, the duty cycle of the shared sub-cluster is the ratio of the number of spare PON ports in the shared sub-cluster whose management status is available and whose actual use status is idle and the number of spare PON ports in the shared sub-cluster.

In some exemplary embodiments, determining whether the resources of the shared subcluster are exhausted according to the duty cycle of the shared subcluster includes at least one of the following:

In the case where the duty cycle of the shared sub-cluster is equal to 1, it is determined that the resources of the shared sub-cluster are exhausted;

When the duty cycle of the shared sub-cluster is greater than 1, it is determined that the resources of the shared sub-cluster are not exhausted.

In some exemplary embodiments, when the duty cycle of the shared sub-cluster is greater than the first preset threshold, it is determined that the resources of the shared sub-cluster are sufficient; when the duty cycle of the shared sub-cluster is greater than the second preset threshold, and If the duty cycle is less than the first preset threshold, it is determined that the shared sub-cluster has fewer resources; if the duty cycle of the shared sub-cluster is greater than 1 and less than the second preset threshold, it is determined that the resources of the shared sub-cluster are about to be exhausted.

In some exemplary embodiments, selecting the first backup PON port from the guaranteed sub-cluster includes: based on the status of the backup PON port in the guaranteed sub-cluster and the priority of the outbound interface in the second corresponding relationship corresponding to the backup PON port, Select the first backup PON port from the guaranteed subcluster.

In some exemplary embodiments, selecting the first backup PON port from the guaranteed sub-cluster according to the status of the backup PON port in the guaranteed sub-cluster and the priority of the outbound interface in the second correspondence relationship corresponding to the backup PON port includes: Select the backup PON port with the highest priority of the outbound interface in the corresponding second mapping relationship from the backup PON ports that are guaranteed to have a management status of available and an actual usage status of idle in the corresponding second mapping relationship in the sub-cluster.

In some exemplary embodiments, selecting the first backup PON port from the shared sub-cluster includes: based on the status of the backup PON port in the shared sub-cluster and the priority of the outbound interface in the second corresponding relationship corresponding to the backup PON port, Select the first backup PON port from the shared subcluster.

In some exemplary embodiments, selecting the first backup PON port from the shared sub-cluster according to the status of the backup PON port in the shared sub-cluster and the priority of the outbound interface in the second correspondence relationship corresponding to the backup PON port includes: From the backup PON ports in the corresponding second mapping relationship in the shared subcluster that have a management status of available and an actual usage status of idle, select the backup PON port with the highest priority of the outbound interface in the corresponding second mapping relationship.

In some exemplary embodiments, when an abnormality occurs in the selected backup PON port and the first primary PON port has not yet recovered, the first primary PON port is re-selected from other backup PON ports that are available in the management status but idle in actual use. Spare PON port.

Step 502: Migrate the data of the first primary PON port to the first backup PON port.

In some exemplary embodiments, after the data of the first primary PON port is migrated to the first backup PON port, the data of the first PON port is not deleted.

Step 503: Send switching action information to the optical matrix device according to the first corresponding relationship and the second corresponding relationship. The switching action information is used to instruct the optical matrix device to connect the first optical network unit group connected to the first main PON port to the first main PON port. On the backup PON port.

In some exemplary embodiments, the switching action information includes: a first incoming interface and a first outgoing interface; where the first incoming interface is an incoming interface of the optical matrix device used to connect to the first optical network unit group, and the first outgoing interface It is the outlet interface of the optical matrix unit used to connect to the first backup PON port.

In some exemplary embodiments, switching action information is sent to the optical matrix device through the basic registration management PON port.

In some exemplary embodiments, after sending the switching action information to the optical matrix device, the method further includes: saving the fifth correspondence between the first main PON port and the first backup PON port, and mapping the first backup PON port to The actual usage status of the first backup PON port in the second corresponding relationship is updated to account for use.

In some exemplary embodiments, after sending the switching action information to the optical matrix device, the method further includes: when the first main PON port returns to normal, sending the switching action information to the optical matrix device according to the fifth correspondence relationship, The rewind action information is used to instruct the optical matrix device to disconnect the first optical network unit group from the first backup PON port.

In some exemplary embodiments, the rewind action information includes: the first incoming interface and the first outgoing interface; keeping the fifth corresponding relationship corresponding to the first main PON port and the data of the first backup PON port unchanged, changing the first The actual usage status of the backup PON port is updated to allocated.

In some exemplary embodiments, the rewind action information is sent to the optical matrix device through the basic registration management PON port.

In some exemplary embodiments, after sending switching action information or reversal action information to the optical matrix device, the method further includes: determining the resource status of the standby PON port cluster based on the duty cycle of the standby PON port cluster.

In some exemplary embodiments, the duty cycle of the backup PON port cluster is the number of spare PON ports in the backup PON port cluster whose management status is available and the actual usage status is idle and the number of backup PON ports in the backup PON port cluster. ratio.

In some exemplary embodiments, determining the resource status of the backup PON port cluster based on the duty cycle of the backup PON port cluster includes at least one of the following:

When the duty cycle of the backup PON port cluster is equal to 1, it is determined that the resource status of the backup PON port cluster is exhausted;

When the duty cycle of the backup PON port cluster is greater than the first preset threshold, it is determined that the resource status of the backup PON port cluster is sufficient;

When the duty cycle of the backup PON port cluster is greater than the second preset threshold and less than the first preset threshold, it is determined that the resource status of the backup PON port cluster is less;

When the duty cycle of the backup PON port cluster is greater than 1 and less than the second preset threshold, it is determined that the resource status of the backup PON port cluster is about to be exhausted.

In some exemplary embodiments, when the resource status of the backup PON interface cluster is sufficient, the status and data of all backup PON interfaces in the backup PON interface cluster are kept unchanged, and the outbound interfaces and internal interfaces in the optical matrix device are maintained. The connection relationship with the incoming interface remains unchanged.

In some exemplary embodiments, when the resource status of the backup PON port cluster is low or about to be exhausted, the second correspondence relationship and the fourth correspondence relationship corresponding to the backup PON port whose actual usage status is allocated are deleted. The corresponding relationship is to send the first release information to the optical matrix device. The first release information is used to instruct the optical matrix device to release the connection relationship corresponding to the egress interface connected to the backup PON port whose actual use status is allocated, and clear the actual use status is allocated. The data of the backup PON port updates the actual usage status of the allocated backup PON port to idle.

In some exemplary embodiments, when the resource status of the backup PON port cluster is about to be exhausted, the method also includes: when two or more primary PON ports are abnormal, first ensure that the high-priority primary PON port is abnormal. The PON port completes the switching operation and reports a notification message or alarm message to the network management device. The switching operation here includes migrating data from the main PON port to the backup PON port and sending switching action information to the optical matrix device.

In some exemplary embodiments, when the resource status of the backup PON port cluster is exhausted and there is an abnormality in the high-priority main PON port, the backup PON port that has completed the switching is released, and the second PON port is sent to the optical matrix device. Release information. The second release information is used to instruct the optical matrix device to release the connection relationship corresponding to the egress interface connected to the released standby PON port, clear the data of the released standby PON port, and update the actual usage status of the released standby PON port. for idle.

In some exemplary embodiments, when the resource status of the backup PON port cluster is exhausted and there is an abnormality in the high-priority primary PON port, the method further includes: reporting a notification message or an alarm message to the network management device.

The backbone optical path protection method provided by the embodiment of the present disclosure, when an abnormality is detected in the first primary PON port in the primary PON port cluster, the first backup PON port is selected from the backup PON port cluster, and the first primary PON port is The optical network unit under the switch is switched to the first backup PON port, that is, the data of the first main PON port is migrated to the first backup PON port, and the switching action information is sent to the optical matrix device; because the backup PON port in the backup PON port cluster The number is less than or equal to the number of main PON ports in the main PON port cluster, which improves the resource utilization of PON ports while ensuring that all backbone optical paths are protected.

Figure 6 is a flow chart of a backbone optical path protection method applied to an optical matrix device when the optical matrix device is used as an external device according to another embodiment of the present disclosure.

In the second aspect, referring to Figure 6, one embodiment of the present disclosure provides a backbone optical path protection method, which can be applied to optical matrix equipment. The method includes:

Step 600: Receive switching action information based on the first correspondence relationship and the second correspondence relationship sent by the optical line terminal; wherein the first correspondence relationship is the correspondence between the main PON port in the main PON port cluster and the inlet interface of the optical matrix device relationship, the second correspondence is the correspondence between the spare PON port in the spare PON port cluster and the outbound interface of the optical matrix device; the number of spare PON ports in the spare PON port cluster is less than Or equal to the number of primary PON ports in the primary PON port cluster.

In some exemplary embodiments, the switching action information sent by the optical line terminal is received through the basic management outbound interface.

In some exemplary embodiments, before receiving the switching action information based on the first correspondence and the second correspondence sent by the optical line terminal, the method further includes: obtaining the first correspondence, and sending the first correspondence to the optical line The terminal; or, obtain the third correspondence relationship between the incoming interface and the optical network unit, and send the third correspondence relationship to the optical line terminal, so that the optical line terminal can generate the first correspondence relationship.

In some exemplary embodiments, obtaining the first correspondence includes: establishing or Update the first correspondence relationship corresponding to the second incoming interface; wherein the second incoming interface is any incoming interface.

In some exemplary embodiments, the fourth correspondence relationship may be delivered by the optical line terminal.

In some exemplary embodiments, according to the uplink optical signal of the corresponding optical network unit received by the second inlet interface and the fourth corresponding relationship between the main PON port and the optical network unit, the second inlet interface corresponding to The first correspondence includes: parsing the identification of the optical network unit from the uplink optical signal; searching for the second main PON port corresponding to the parsed identification of the optical network unit in the fourth correspondence; corresponding to whether there is a second inlet interface. The first correspondence relationship, and whether the main PON port and the second main PON port in the first correspondence relationship corresponding to the second inlet interface are the same, establish or update the first correspondence relationship corresponding to the second inlet interface.

In some exemplary embodiments, establishing or updating is performed based on whether there is a first corresponding relationship corresponding to the second incoming interface, and whether the main PON port and the second main PON port in the first corresponding relationship corresponding to the second incoming interface are the same. The first correspondence relationship corresponding to the second inlet interface includes at least one of the following:

If there is no first corresponding relationship corresponding to the second incoming interface, establish a first corresponding relationship between the second incoming interface and the second main PON port;

When there is a first correspondence relationship corresponding to the second inlet interface, and the main PON port in the first correspondence relationship corresponding to the second inlet interface is the same as the second main PON port, the first correspondence corresponding to the second inlet interface is maintained. The main PON port in the relationship remains unchanged;

When there is a first corresponding relationship corresponding to the second incoming interface, and the main PON port in the first corresponding relationship corresponding to the second incoming interface is different from the second main PON port, the first corresponding relationship corresponding to the second incoming interface is changed. The primary PON port in the corresponding relationship is updated to the second primary PON port.

In some exemplary embodiments, obtaining the third corresponding relationship between the incoming interface and the optical network unit includes: establishing or updating the corresponding uplink optical signal of the second incoming interface according to the uplink optical signal of the corresponding optical network unit received by the second incoming interface. The third correspondence relationship; wherein, the second incoming interface is any incoming interface.

In some exemplary embodiments, establishing or updating the third correspondence relationship corresponding to the second inlet interface according to the uplink optical signal of the corresponding optical network unit received by the second inlet interface includes: parsing the uplink optical signal to obtain the optical network The identification of the unit; based on whether there is a third correspondence corresponding to the second inlet interface, and whether the identification of the optical network unit in the third correspondence corresponding to the second inlet interface is the same as the identification of the optical network unit obtained by analysis, establish or Update the third correspondence relationship corresponding to the second incoming interface.

In some exemplary embodiments, according to whether there is a third correspondence relationship corresponding to the second inlet interface, and whether the identification of the optical network unit in the third correspondence relationship corresponding to the second inlet interface and the identification of the optical network unit obtained by analysis Similarly, establishing or updating the third corresponding relationship corresponding to the second incoming interface includes at least one of the following:

If there is no third corresponding relationship corresponding to the second incoming interface, establish a third corresponding relationship between the second incoming interface and the parsed identification of the optical network unit;

When there is a third correspondence relationship corresponding to the second inlet interface, and the identifier of the optical network unit in the third correspondence relationship corresponding to the second inlet interface is the same as the identifier of the optical network unit obtained by analysis, the second inlet interface is maintained The optical network unit in the corresponding third correspondence relationship remains unchanged;

When there is a third correspondence relationship corresponding to the second inlet interface, and the identifier of the optical network unit in the third correspondence relationship corresponding to the second inlet interface is different from the identifier of the optical network unit obtained by analysis, the second inlet port is The optical network unit in the third correspondence relationship corresponding to the interface is updated to the optical network unit corresponding to the parsed identification of the optical network unit.

In some exemplary embodiments, the first correspondence relationship or the third correspondence relationship further includes: the status of the second inlet interface.

In some exemplary embodiments, obtaining the first corresponding relationship or obtaining the third corresponding relationship further includes: determining whether the uplink optical signal of the optical network unit detected by the second incoming interface within a preset period is interrupted. The initial state within the preset period; determine the state of the second inlet interface based on the initial states of the second inlet interface corresponding to all preset periods within the second preset time period.

In some exemplary embodiments, determining the initial state of the second inlet interface within the preset period based on whether the uplink optical signal of the optical network unit detected by the second inlet interface within the preset period is interrupted includes at least one of the following:

When the second inlet interface continues to detect the uplink optical signal of the optical network unit within the preset period, that is, when the uplink optical signal is not interrupted, it is determined that the initial state of the second inlet interface within the preset period is valid;

When the uplink optical signal of the optical network unit detected by the second inlet interface is interrupted within the preset period, it is determined that the initial state of the second inlet interface within the preset period is invalid.

In some exemplary embodiments, the uplink validity flag bit may be used to indicate the initial state of the second ingress interface within a preset period. For example, when the initial state of the second inbound interface is valid within the preset period, the uplink validity flag bit of the second inbound interface is 1; when the initial state of the second inbound interface is invalid within the preset period, the uplink validity flag bit of the second inbound interface is invalid. The upstream validity flag of the two-input interface is 0.

In some exemplary embodiments, the second preset time period is greater than Y times the preset period, and Y is an integer greater than or equal to 2.

In some exemplary embodiments, determining the status of the second inlet interface based on the initial status corresponding to all preset periods of the second inlet interface within the second preset time period includes at least one of the following:

The initial states corresponding to all preset periods of the second inlet interface have not changed during the second preset time period, and the initial states corresponding to all preset periods of the second inlet interface are valid within the second preset time period. In this case, determine that the status of the second incoming interface is valid;

The initial states corresponding to all preset periods of the second inlet interface have not changed during the second preset time period, and the initial states corresponding to all preset periods of the second inlet interface within the second preset time period are invalid. In this case, it is determined that the status of the second incoming interface is invalid;

When the initial state of the second inlet interface changes in all preset periods within the second preset time period, it is determined that the state of the second inlet interface is unstable.

Step 601: Control the first optical network unit group connected to the first main PON port to connect to the first backup PON port selected from the backup PON port cluster according to the switching action information; wherein the first main PON port is the main PON port cluster An abnormal main PON port occurs.

In some exemplary embodiments, controlling the first optical network unit group connected to the first main PON port to connect to the first backup PON port selected from the backup PON port cluster according to the switching action information includes: controlling the first ingress interface and The first outgoing interface is connected.

In some exemplary embodiments, the first optical matrix module and the second optical matrix module can be controlled to Control the connection between the first incoming interface and the first outgoing interface.

In some exemplary embodiments, the first optical matrix module includes: m-1 2-to-1 optical switches. The input end of each 2-to-1 optical switch is connected to an outlet interface, and one of the output ends is connected to the internal virtual registration link. D0, the other output end is connected to one of the internal interfaces, as shown in Figure 7(a), the input end of the 2-to-1 optical switch 701a is connected to the outgoing interface I2, one of the output ends is connected to the internal virtual registration link D0, and the other output end is connected to the internal interface S2; the input end of the 2-to-1 optical switch 702a is connected to the outgoing interface I3, one of the output ends is connected to the internal virtual registration link D0, and the other output end is connected to the internal interface S3; and so on, the 2-to-1 optical switch The input end of 70(m-1)a is connected to the outgoing interface Im, one of the output ends is connected to the internal virtual registration link D0, and the other output end is connected to the internal interface Sm.

In other words, the connection relationship between the outbound interface and the internal interface is fixed and cannot be changed later.

In some exemplary embodiments, m (m-1) select 1 optical switches, each (m-1) select 1 optical switch has (m-1) output terminals and (m-1) output interfaces respectively. Connection, the input end is connected to the internal virtual registration link D0 or one of the internal interfaces. As shown in Figure 7(b), the input end of (m-1) select 1 optical switch 701b is connected to the internal virtual registration link D0, the first output end is connected to the outgoing interface I2, and the second output end is connected to the outgoing interface I3. By analogy, the (m-1)th output terminal is connected to the output interface Im; the input terminal of (m-1) selected optical switch 702b is connected to the internal interface S2, the first output terminal is connected to the output interface I2, and the second output The input end of (m-1) 1 optical switch 70mb is connected to the internal interface Sm, and the first output The output terminal is connected to the outgoing interface I2, the second output terminal is connected to the outgoing interface I3, and so on, the (m-1)th output terminal is connected to the outgoing interface Im.

That is to say, the connection relationship between the outgoing interface and the internal interface is not fixed. By controlling the corresponding optical switch, the corresponding internal interface and the outgoing interface can be connected.

In some exemplary embodiments, (m-1) m-choose-1 optical switches, m output terminals of each m-choose-1 optical switch are respectively connected to the internal virtual registration link D0 and (m-1) internal interfaces , the input end is connected to one of the output interfaces. As shown in Figure 7(c), the input end of the m-select 1 optical switch 701c is connected to the outgoing interface I2, the first output end is connected to the internal virtual registration link D0, the second output end is connected to the internal interface S2, and so on, The m-th output terminal is connected to the internal interface Sm; the input terminal of the m-selected optical switch 702c is connected to the outgoing interface I3, the first output terminal is connected to the internal virtual registration link D0, the second output terminal is connected to the internal interface S2, and so on. , the m-th output terminal is connected to the internal interface Sm; and so on, the input terminal of m-selected optical switch 70(m-1)c is connected to the outgoing interface Im, the first output terminal is connected to the internal virtual registration link D0, and the second The first output terminal is connected to the internal interface S2, and so on, and the m-th output terminal is connected to the internal interface Sm.

In other words, the connection relationship between the outgoing interface and the internal interface is not fixed. By controlling the phase The corresponding optical switch can realize the corresponding internal interface and output interface connection.

In some exemplary embodiments, the second optical matrix module includes: n m-choose-1 optical switches, m output terminals of each m-choose-1 optical switch are respectively connected to m internal interfaces, and the input terminal is connected to one of the incoming interfaces. connect. As shown in Figure 8(a), the input end of the m-select 1 optical switch 801a is connected to the incoming interface E1, the first output end is connected to the internal interface S1, the second output end is connected to the internal interface S2, and so on, the mth The output end is connected to the internal interface Sm; the input end of the m-selected optical switch 802a is connected to the incoming interface E2, the first output end is connected to the internal interface S1, the second output end is connected to the internal interface S2, and so on, the mth output end Connect the internal interface Sm; and so on, the input end of m selects 1 optical switch 80na is connected to the input interface En, the first output end is connected to the internal interface S1, the second output end is connected to the internal interface S2, and so on, the mth The output terminal is connected to the internal interface Sm.

In some exemplary embodiments, the second optical matrix module includes: m n-choose-1 optical switches, the n output terminals of each n-choose-1 optical switch are respectively connected to n input interfaces, and the input terminal is connected to one of the internal interfaces. connect. As shown in Figure 8(b), the input end of the n-select 1 optical switch 801b is connected to the internal interface S1, the first output end is connected to the interface E1, the second output end is connected to the interface E2, and so on, the nth The output terminal is connected to the interface En; the input terminal of the n-select 1 optical switch 802b is connected to the internal interface S2, the first output terminal is connected to the interface E1, the second output terminal is connected to the interface E2, and so on, the nth output terminal Connect to the interface En; and so on, the input end of the n-select 1 optical switch 80mb is connected to the internal interface Sm, the first output end is connected to the interface E1, the second output end is connected to the interface E2, and so on, the nth The output is connected to interface En.

That is to say, the connection relationship between the incoming interface and the internal interface is not fixed, and the corresponding internal interface and the incoming interface can be connected by controlling the corresponding optical switch.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(a) and the second optical matrix module is as shown in Figure 8(a). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port, controlling the connection between the first inlet interface and the first outlet interface includes: controlling the 2-choose-1 optical switch connected to the first outlet interface in the first optical matrix module to close to the target internal interface, The target internal interface and the first outlet interface are connected to the same 2-to-1 optical switch, and the m-to-1 optical switch connected to the first inlet interface in the second optical matrix module is controlled to close to the target internal interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(a) and the second optical matrix module is as shown in Figure 8(b). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port, controlling the connection between the first inlet interface and the first outlet interface includes: controlling the 2-choose-1 optical switch connected to the first outlet interface in the first optical matrix module to close to the target internal interface, inside target The interface is connected to the same 2-to-1 optical switch as the first outlet interface, and the m-to-1 optical switch connected to the target internal interface in the second optical matrix module is controlled to close to the first inlet interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(b) and the second optical matrix module is as shown in Figure 8(a). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port. Controlling the connection between the first incoming interface and the first outgoing interface includes: selecting an internal interface, and controlling the (m-1) selection of the first optical matrix module connected to the selected internal interface. 1 optical switch is closed to the first outlet interface, and the m-selected 1 optical switch connected to the first inlet interface in the second optical matrix module is controlled to be closed to the selected internal interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(b) and the second optical matrix module is as shown in Figure 8(b). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port. Controlling the connection between the first incoming interface and the first outgoing interface includes: selecting an internal interface, and controlling the (m-1) selection of the first optical matrix module connected to the selected internal interface. 1 optical switch is closed to the first outlet interface, and the m-selected 1 optical switch connected to the selected internal interface in the second optical matrix module is controlled to be closed to the first inlet interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(c), and the second optical matrix module is as shown in Figure 8(a). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port. Controlling the connection between the first incoming interface and the first outgoing interface includes: selecting an internal interface, and controlling the closing of the m-selected 1 optical switch connected to the first outgoing interface in the first optical matrix module. to the selected internal interface, and control the m-select 1 optical switch connected to the first inlet interface in the second optical matrix module to close to the selected internal interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(c), and the second optical matrix module is as shown in Figure 8(b). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port. Controlling the connection between the first incoming interface and the first outgoing interface includes: selecting an internal interface, and controlling the closing of the m-selected 1 optical switch connected to the first outgoing interface in the first optical matrix module. to the selected internal interface, and control the m-select 1 optical switch connected to the selected internal interface in the second optical matrix module to close to the first inlet interface.

In some exemplary embodiments, after controlling the connection between the first incoming interface and the first outgoing interface according to the first corresponding relationship corresponding to the first main PON port and the second corresponding relationship corresponding to the first backup PON port, the method further includes: Save the connection relationship between the first outgoing interface, the target internal interface, or the selected internal interface and the first incoming interface.

In some exemplary embodiments, the connection relationship also includes the status of the outbound interface.

In some exemplary embodiments, the connection between the first incoming interface and the first outgoing interface is controlled according to the pre-saved connection relationship, the first corresponding relationship corresponding to the first main PON port, and the second corresponding relationship corresponding to the first backup PON port.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(b) and the second optical matrix module is as shown in Figure 8(a). Then, according to the first correspondence relationship corresponding to the first main PON port , the second corresponding relationship corresponding to the first backup PON port. Controlling the connection between the first incoming interface and the first outgoing interface includes: selecting an internal interface according to the pre-saved connection relationship, and controlling the first optical matrix module connected to the selected internal interface. The (m-1) 1-select optical switch is closed to the first outlet interface, and the m-1 select 1 optical switch connected to the first inlet interface in the second optical matrix module is controlled to be closed to the selected internal interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(b) and the second optical matrix module is as shown in Figure 8(b). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port. Controlling the connection between the first inlet interface and the first outlet interface includes: selecting an internal interface according to the pre-saved connection relationship, and controlling the first optical matrix module connected to the selected internal interface. The (m-1) 1-select optical switch is closed to the first outlet interface, and the m-1 select 1 optical switch connected to the selected internal interface in the second optical matrix module is controlled to be closed to the first inlet interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(c), and the second optical matrix module is as shown in Figure 8(a). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port. Controlling the connection between the first inlet interface and the first outlet interface includes: selecting an internal interface according to the pre-saved connection relationship, and controlling the connection between the first optical matrix module and the first outlet interface. The m-select 1 optical switch is closed to the selected internal interface, and the m-select 1 optical switch connected to the first inlet interface in the second optical matrix module is controlled to be closed to the selected internal interface.

In some exemplary embodiments, the first optical matrix module is as shown in Figure 7(c), and the second optical matrix module is as shown in Figure 8(b). Then, according to the first correspondence relationship corresponding to the first main PON port , the second correspondence relationship corresponding to the first backup PON port. Controlling the connection between the first inlet interface and the first outlet interface includes: selecting an internal interface according to the pre-saved connection relationship, and controlling the connection between the first optical matrix module and the first outlet interface. The m-select 1 optical switch is closed to the selected internal interface, and the m-select 1 optical switch connected to the selected internal interface in the second optical matrix module is controlled to be closed to the first inlet interface.

In some exemplary embodiments, selecting an internal interface according to a pre-saved connection relationship includes: selecting an internal interface in a connection relationship corresponding to the first outgoing interface and the first incoming interface.

In some exemplary embodiments, you can also optionally select an internal interface that is not connected to other outgoing interfaces and incoming interfaces.

In some exemplary embodiments, before receiving the switching action information sent by the optical line terminal, the method further includes: sending a registration request to the basic registration management PON port of the OLT through the basic management outgoing interface to realize registration on the basic registration management PON port. .

In some exemplary embodiments, before receiving the switching action information based on the first correspondence and the second correspondence sent by the optical line terminal, the method further includes: when the management status of the second outbound interface is available, the actual usage status is When idle, the first optical matrix module is controlled to connect the internal virtual registration link D0 to the second outbound interface, and send a virtual registration signal to the optical line terminal through the second outbound interface; where the virtual registration signal includes: a registration identifier and The outbound interface index of the second outbound interface.

In some exemplary embodiments, controlling the first optical matrix module to connect the internal virtual registration link D0 to the second outbound interface includes: the first optical matrix module, as shown in Figure 7(a), controlling the first optical matrix module. The 2-to-1 optical switch connected to the second outgoing interface is closed to the internal virtual registration link D0; or, as shown in Figure 7(b), the first optical matrix module controls the internal virtual registration link in the first optical matrix module. The (m-1) 1-select optical switch connected to D0 is closed to the outlet port connected to the second backup PON port; or, as shown in Figure 7(c), the first optical matrix module controls the first optical matrix module to communicate with the second backup PON port. The m-select 1 optical switch connected to the second outgoing interface is closed to the internal virtual registration link D0.

In some exemplary embodiments, when the number of second backup PON ports is two or more, the first optical matrix module can be controlled to connect the internal virtual registration link D0 to each second egress interface in turn, and pass The second outgoing interface sends a virtual registration signal to the optical line terminal. For example, assuming that the number of second backup PON ports is 3, you can first control the first optical matrix module to connect the internal virtual registration link D0 to the first second outbound interface (assumed to be outbound interface I2), and use the second The egress interface I2 sends a virtual registration signal to the optical line terminal; then the first optical matrix module is controlled to connect the internal virtual registration link D0 to the second second egress interface (assumed to be the egress interface I3), and through the second egress interface I3 Send a virtual registration signal to the optical line terminal; finally control the first optical matrix module to connect the internal virtual registration link D0 to the third second outbound interface (assumed to be the outbound interface I4), and send the signal to the optical line through the second outbound interface I4. The terminal sends a virtual registration signal.

In an exemplary embodiment, a virtual registration signal is periodically sent to the optical line terminal through the second egress interface.

In some exemplary embodiments, the registration identification includes, but is not limited to, at least one of PON MAC address, LOID, SN, etc.

In some exemplary embodiments, the egress interface index is defined including but not limited to using G.983.1 The undefined 13th byte in Serial_number_ONU is agreed according to a certain format.

In some exemplary embodiments, after controlling the first optical network unit group connected to the first main PON port to connect to the first backup PON port selected from the backup PON port cluster according to the switching action information, the method further includes: receiving The rewind action information sent by the optical line terminal. The rewind action information is used to instruct the optical matrix device to disconnect the first optical network unit group from the first backup PON port; control the first optical network unit group according to the rewind action information. Disconnect from the first backup PON port.

In some exemplary embodiments, the rewind action information includes: a first incoming interface and a first outgoing interface.

Controlling the disconnection of the first optical network unit group from the first backup PON port according to the rewind action information includes: controlling the disconnection of the first incoming interface and the first outgoing interface.

In some exemplary embodiments, controlling the disconnection of the first incoming interface and the first outgoing interface includes: determining the internal interface in the connection relationship corresponding to the first incoming interface and the first outgoing interface according to the pre-saved connection relationship, and The connection between the first incoming interface and the determined internal interface is disconnected, and/or the connection between the first outgoing interface and the determined internal interface is disconnected.

In some exemplary embodiments, after controlling to disconnect the first incoming interface and the first outgoing interface, the method further includes: updating the connection relationship.

In some exemplary embodiments, the rewind action information sent by the optical line terminal is received through the basic management outgoing interface.

In some exemplary embodiments, the method further includes: receiving first release information sent by the optical line terminal. The first release information is used to instruct the optical matrix device to release the egress interface corresponding to the actual use status of the allocated backup PON port connection. The connection relationship; the first optical matrix module and the second optical matrix module are controlled to disconnect the outgoing interface connected to the allocated spare PON port, the corresponding connected internal interface, and the corresponding connected incoming interface.

In some exemplary embodiments, the first optical matrix module and the second optical matrix module are controlled to disconnect the egress interface connected to the allocated backup PON port, the corresponding connected internal interface, and the corresponding connected incoming interface. After the connection, the method also includes: deleting the connection relationship corresponding to the outbound interface connected to the allocated standby PON port in actual use status.

In some exemplary embodiments, the method further includes: receiving second release information sent by the optical line terminal, where the second release information is used to instruct the optical matrix device to release the connection relationship corresponding to the egress interface connected to the released standby PON port; Control the first optical matrix module and the second optical matrix module to disconnect the outgoing interface connected to the released standby PON port, the corresponding connected internal interface, and the corresponding connected incoming interface.

In some exemplary embodiments, after controlling the first optical matrix module and the second optical matrix module to disconnect the egress interface connected to the released standby PON port, the corresponding connected internal interface, and the corresponding connected incoming interface, the The method also includes: deleting the connection relationship corresponding to the outbound interface connected to the released standby PON port.

The backbone optical path protection method applied to optical matrix equipment provided by embodiments of the present disclosure controls the connection of the first optical network unit group connected to the first main PON port and the first backup PON port according to the switching action information sent by the OLT, so as to realize The optical network unit under the first primary PON port is switched to the first backup PON port. Since the number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster, all backbone optical paths are ensured. The resource utilization of the PON port is improved under the premise of protection.

Next, the implementation process of the backbone optical path protection method in the OLT and the optical matrix device is described when the optical matrix device is built into the OLT.

FIG. 9 is a flow chart of a backbone optical path protection method applied to an OLT when the optical matrix device provided by another embodiment of the present disclosure is built into the OLT.

In the third aspect, referring to Figure 9, another embodiment of the present disclosure provides a backbone optical path protection method, which can be applied to OLT. The method includes:

Step 900: Obtain the first correspondence relationship and the second correspondence relationship; wherein, the first correspondence relationship is the correspondence relationship between the main PON port in the main PON port cluster and the inlet interface of the optical matrix device, and the second correspondence relationship is the backup PON port. Correspondence between the backup PON port in the cluster and the outbound interface of the optical matrix device.

The specific implementation process of step 900 is the same as the specific implementation process of step 500 in the previous embodiment, and will not be described again here.

Step 901: When an abnormality is detected in the first primary PON port in the primary PON port cluster, select the first standby PON port from the standby PON port cluster; wherein the number of standby PON ports in the standby PON port cluster is less than or Equal to the number of primary PON ports in the primary PON port cluster.

The specific implementation process of step 901 is the same as the specific implementation process of step 501 in the previous embodiment, and will not be described again here.

Step 902: Migrate the data of the first primary PON port to the first backup PON port.

The specific implementation process of step 902 is the same as the specific implementation process of step 502 in the previous embodiment, and will not be described again here.

Step 903: Control the PON port connected to the first main PON port according to the first corresponding relationship and the second corresponding relationship. The first optical network unit group is connected to the first backup PON port.

The specific implementation process of step 903 is the same as the specific implementation process of step 601 in the previous embodiment, and will not be described again here.

Other implementation processes of this embodiment are the same as the specific implementation process of the trunk optical path protection method in the previous embodiment, and will not be described again here.

The backbone optical path protection method applied to OLT provided by the embodiment of the present disclosure, when an abnormality is detected in the first main PON port in the main PON port cluster, the first backup PON port is selected from the backup PON port cluster, and the first backup PON port is selected. The optical network unit under one main PON port is switched to the first backup PON port, that is, the data of the first main PON port is migrated to the first backup PON port to control the first optical network unit group connected to the first main PON port. Connected to the first backup PON port; since the number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster, the resources of the PON port are increased while ensuring that all backbone optical paths are protected. Utilization.

In a fourth aspect, another embodiment of the present disclosure provides an electronic device, including: at least a first processor; a first memory, at least one first program is stored in the first memory, and when the at least one first program is processed by at least one When the first processor is executed, any one of the trunk optical path protection methods described in the first aspect is implemented.

Wherein, the first processor is a device with data processing capabilities, which includes but is not limited to a central processing unit (CPU), etc.; the first memory is a device with data storage capabilities, which includes but is not limited to random access memory (RAM, More specifically, such as SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH).

In some embodiments, the first processor and the first memory are connected to each other through a bus and are further connected to other components of the computing device.

In a fifth aspect, another embodiment of the present disclosure provides a computer-readable medium. A computer program is stored on the computer-readable medium. When the computer program is executed by a processor, any one of the trunk optical path protection methods described in the first aspect is implemented.

Figure 10 is a schematic diagram of the composition of an optical matrix device provided by another embodiment of the present disclosure.

In a sixth aspect, another embodiment of the present disclosure provides an optical matrix device, including: at least a second processor 1001; a second memory 1002. The second memory 1002 stores at least a second program. When at least a second When the program is executed by at least one second processor 1001, any one of the trunk optical path protection methods described in the second aspect is implemented.

In some exemplary embodiments, it also includes: a first optical matrix module 1003 and a second optical matrix module 1004, configured to realize connecting the first incoming interface and the first outgoing interface under the control of the second processor 1001 or disconnect.

In some exemplary embodiments, the optical matrix device further includes: a trunk optical splitter 1005. One branch optical path of the trunk optical splitter 1005 is connected to the second processor 1001 and the second memory 1002 through a bus, and the other branch optical path passes through The optical fiber is connected to one of the internal interfaces of the second optical matrix module (S1 in Figure 10), and the trunk optical path of the trunk optical splitter 1005 is connected to the backup PON port of the corresponding OLT through the optical fiber.

In some exemplary embodiments, m-1 output interfaces (I2 to Im in Figure 10) of the first optical matrix module 1003 are connected to m-1 backup PON ports of OLTs through optical fibers. The first optical matrix module The m-1 internal interfaces of 1003 (S2 to Sm in Figure 10) are connected to the m-1 internal interfaces of the second optical matrix module (S2 to Sm in Figure 8).

In some exemplary embodiments, the n input interfaces (E1 to En in Figure 10) of the second optical matrix module 1004 are connected to the ONU through optical fibers and optical splitters.

In some exemplary embodiments, the first optical matrix module 1003 connects to the bus through an internal virtual registration link D0.

Among them, the second processor 1001 is a device with data processing capabilities, which includes but is not limited to a central processing unit (CPU), etc.; the second memory 1002 is a device with data storage capabilities, which includes but is not limited to a random access memory ( RAM (more specifically such as SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH).

In some embodiments, the second processor 1001 and the second memory 1002 are connected to each other through a bus and are further connected to other components of the computing device.

In a seventh aspect, another embodiment of the present disclosure provides an electronic device, including: at least a third processor 1101; a third memory 1102. At least one third program is stored on the third memory 1102. When the at least one third program When executed by at least one third processor 1101, any one of the trunk optical path protection methods described in the third aspect is implemented.

In some exemplary embodiments, it also includes: a first optical matrix module 1103 and a second optical matrix module 1104. The optical matrix module realizes connecting or disconnecting the first incoming interface and the first outgoing interface under the control of the third processor. open.

In some exemplary embodiments, the electronic device further includes: a trunk optical splitter 1105. One branch optical path of the trunk optical splitter 1105 is connected to the third processor 1101 and the third memory 1102 through a bus, and the other branch optical path passes through an optical fiber. Connected to one of the internal interfaces of the second optical matrix module (S1 in Figure 11), the trunk optical path of the trunk optical splitter 1105 is connected to the backup PON port of the corresponding OLT through an optical fiber.

In some exemplary embodiments, m-1 output interfaces (I2 to Im in Figure 11) of the first optical matrix module 1103 are connected to m-1 backup PON ports of OLTs through optical fibers. The first optical matrix module The m-1 internal interfaces of 1103 (S2 to Sm in Figure 11) are connected to the m-1 internal interfaces of the second optical matrix module (S2 to Sm in Figure 11).

In some exemplary embodiments, the n input interfaces (E1 to En in Figure 11) of the second optical matrix module 1104 are connected to the ONU through optical fibers and optical splitters.

In some exemplary embodiments, the first optical matrix module 1103 connects to the bus through an internal virtual registration link D0.

Among them, the third processor 1101 is a device with data processing capabilities, which includes but is not limited to a central processing unit (CPU), etc.; the third memory 1102 is a device with data storage capabilities, which includes but is not limited to a random access memory ( RAM (more specifically such as SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH).

In some embodiments, the third processor 1101 and the third memory 1102 are connected to each other through a bus and are further connected to other components of the computing device.

In the eighth aspect, referring to FIG. 2 , another embodiment of the present disclosure provides a trunk optical line protection system, including: an optical line terminal and an optical matrix device.

Wherein, the optical line terminal 201 is configured to obtain a first corresponding relationship and a second corresponding relationship; wherein the first corresponding relationship is one of the main PON port in the main passive optical network PON port cluster and the inlet interface of the optical matrix device. The second corresponding relationship is the corresponding relationship between the backup PON port in the backup PON port cluster and the outbound interface of the optical matrix device; when the first primary PON in the primary passive optical network PON port cluster is detected When an abnormality occurs on the port, select the first backup PON port from the backup PON port cluster; wherein the number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster; Migrate the data of the first main PON port to the first backup PON port; send switching action information to the optical matrix device according to the first corresponding relationship and the second corresponding relationship, where the switching action information is used to Instruct the optical matrix device to connect the first optical network unit group connected to the first main PON port to the first backup PON port.

The optical matrix device 202 is configured to receive switching action information based on the first correspondence relationship and the second correspondence relationship sent by the optical line terminal; and to control the first optical network connected to the first main PON port according to the switching action information. The unit group is connected to the first backup PON port.

The specific implementation process of the above-mentioned optical line terminal and optical matrix equipment is the same as the specific implementation process of the trunk optical path protection method in the previous embodiment, and will not be described again here.

Those of ordinary skill in the art can understand that all or some steps, systems, and functional modules/units in the devices disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may consist of several physical components. Components execute cooperatively. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is known to those of ordinary skill in the art, the term computer storage media includes volatile and nonvolatile media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. removable, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disk (DVD) or other optical disk storage, magnetic cassettes, tapes, disk storage or other magnetic storage, or may be used Any other medium that stores the desired information and can be accessed by a computer. Additionally, it is known to those of ordinary skill in the art that communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should be interpreted in a general illustrative sense only and not for purpose of limitation. In some instances, it will be apparent to those skilled in the art that features, characteristics and/or elements described in connection with a particular embodiment may be used alone, or may be used in conjunction with other embodiments, unless expressly stated otherwise. Features and/or components used in combination. Accordingly, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

A backbone optical path protection method, applied to optical matrix equipment, the method includes:

Receive switching action information based on the first correspondence relationship and the second correspondence relationship sent by the optical line terminal, wherein the first correspondence relationship is one of the main PON port in the main passive optical network PON port cluster and the inlet interface of the optical matrix device. The second corresponding relationship is the corresponding relationship between the spare PON port in the spare PON port cluster and the outbound interface of the optical matrix device; the number of spare PON ports in the spare PON port cluster is less than or Equal to the number of primary PON ports in the primary PON port cluster;

According to the switching action information, the first optical network unit group connected to the first main PON port is controlled to be connected to the first backup PON port selected from the backup PON port cluster, wherein the first main PON port is the main PON An abnormal main PON port occurs in the port cluster.
The backbone optical path protection method according to claim 1, wherein

The switching action information includes: a first incoming interface and a first outgoing interface, wherein the first incoming interface is an incoming interface of the optical matrix device used to connect to the first optical network unit group, and the first The outlet interface is the outlet interface of the optical matrix unit used to connect to the first backup PON port;

Controlling the first optical network unit group connected to the first main PON port to be connected to the first backup PON port selected from the backup PON port cluster according to the switching action information includes: controlling the first inlet interface and the The first outgoing interface is connected.
The backbone optical path protection method according to claim 2, before receiving the switching action information based on the first correspondence relationship and the second correspondence relationship sent by the optical line terminal, the method further includes:

Obtain the first correspondence relationship and send the first correspondence relationship to the optical line terminal;

Alternatively, obtain a third correspondence between the ingress interface and the optical network unit, and send the third correspondence to the optical line terminal, so that the optical line terminal can generate the first correspondence.
The backbone optical path protection method according to claim 3, wherein said obtaining the first correspondence includes:

According to the uplink optical signal of the corresponding optical network unit received by the second incoming interface and the main PON port and a fourth corresponding relationship between the optical network unit and the optical network unit, establishing or updating a first corresponding relationship corresponding to the second incoming interface, wherein the second incoming interface is any incoming interface.
The backbone optical path protection method according to claim 1, before receiving the switching action information based on the first correspondence relationship and the second correspondence relationship sent by the optical line terminal, the method further includes:

When the management status of the second outbound interface is available and the actual usage status is idle, the first optical matrix module is controlled to connect the internal virtual registration link to the second outbound interface, and communicate to the second outbound interface through the second outbound interface. The optical line terminal sends a virtual registration signal, where the virtual registration signal includes: a registration identifier and an outbound interface index of the second outbound interface.
The backbone optical path protection method according to claim 1, wherein the first optical network unit group connected to the first main PON port is controlled according to the switching action information to be connected to the first backup PON port selected from the backup PON port cluster. Finally, the method also includes:

Receive rewind action information sent by the optical line terminal, where the rewind action information is used to instruct the optical matrix device to disconnect the first optical network unit group from the first backup PON port;

The first optical network unit group is controlled to be disconnected from the first backup PON port according to the rewind action information.
A backbone optical path protection method, applied to optical line terminals, the method includes:

Obtain a first correspondence relationship and a second correspondence relationship, wherein the first correspondence relationship is the correspondence relationship between the main PON port in the primary passive optical network PON port cluster and the inlet interface of the optical matrix device, and the second correspondence relationship is The relationship is the corresponding relationship between the backup PON port in the backup PON port cluster and the outbound interface of the optical matrix device;

When an abnormality is detected in the first primary PON port in the primary PON port cluster, select the first backup PON port from the backup PON port cluster, where the number of backup PON ports in the backup PON port cluster is less than or equal to The number of primary PON ports in the primary PON port cluster;

Migrate the data of the first primary PON port to the first backup PON port;

Send switching action information to the optical matrix device according to the first corresponding relationship and the second corresponding relationship. The switching action information is used to indicate that the optical matrix device will connect to the first main PON port. The first optical network unit group is connected to the first backup PON port.
The backbone optical path protection method according to claim 7, wherein the switching action information includes: a first incoming interface and a first outgoing interface, wherein the first incoming interface is the optical matrix device used to connect the The inlet interface of the first optical network unit group, and the first outlet interface is the outlet interface of the optical matrix unit used to connect to the first backup PON port.
The backbone optical path protection method according to claim 7, wherein said obtaining the first correspondence includes:

Receive the first correspondence sent by the optical matrix device;

Or, receive the third correspondence relationship between the inlet interface and the optical network unit sent by the optical matrix device, and establish or update the third correspondence relationship between the main PON port and the optical network unit according to the third correspondence relationship and the fourth correspondence relationship between the main PON port and the optical network unit. Describe the first corresponding relationship.
The backbone optical path protection method according to claim 7, wherein obtaining the second correspondence relationship includes:

Detect the status of the second backup PON port, where the second backup PON interface is any backup PON interface in the backup PON port cluster; the status of the second backup PON port includes management status and actual use status;

When the management status of the second backup PON port is available and the actual usage status of the second backup PON port is idle, it is determined whether the second backup PON port receives all the data within a predetermined number of periods. The virtual registration signal sent by the optical matrix device is used to establish or update the second correspondence relationship corresponding to the second backup PON port; wherein the virtual registration signal includes: a registration identifier and an outbound interface index of the second outbound interface.
The backbone optical path protection method according to any one of claims 7-10, wherein the selecting the first backup PON port from the backup PON port cluster includes at least one of the following:

In the fifth corresponding relationship between the pre-saved main PON port and the backup PON port, if there is a fifth corresponding relationship corresponding to the first main PON port, select the fifth corresponding relationship corresponding to the first main PON port. The backup PON port in the corresponding relationship;

Select the first backup PON port from the backup PON port cluster according to preset rules.
The backbone optical path protection method according to claim 11, before selecting the first backup PON port from the backup PON port cluster according to preset rules, the method further includes:

Determine whether switching is possible based on the status of all backup PON interfaces in the backup PON interface cluster and the status of the third incoming interface of the optical matrix device connected to the first optical network unit group;

If it is determined that switching is possible, continue to perform the step of selecting the first backup PON port from the backup PON port cluster according to the preset rules.
The backbone optical path protection method according to claim 11, wherein selecting the first backup PON port from the backup PON port cluster according to preset rules includes:

Select the first standby PON port from the standby PON port cluster according to the status of all standby PON ports in the standby PON port cluster and the priority of the outgoing interface in the second correspondence relationship corresponding to all standby PON ports. .
The backbone optical path protection method according to claim 13, before selecting the first backup PON port from the backup PON port cluster, the method further includes:

Determine or update the third outbound interface based on whether the backup PON port in the second correspondence relationship corresponding to the third outbound interface changes and the status of the backup PON port in the second correspondence relationship corresponding to the third outbound interface. priority, wherein the third interface is any outbound interface of the optical matrix device.
The backbone optical path protection method according to any one of claims 7-10, after sending the switching action information to the optical matrix device, the method further includes:

Save the fifth correspondence between the first main PON port and the first backup PON port;

When the first main PON port returns to normal, rewind action information is sent to the optical matrix device according to the fifth correspondence relationship, and the rewind action information is used to instruct the optical matrix device to transfer the The first optical network unit group is disconnected from the first backup PON port;

Maintaining the fifth correspondence relationship corresponding to the first main PON port and the data of the first backup PON port The actual usage status of the first backup PON port remains unchanged, and the actual usage status of the first backup PON port is updated to allocation.
A backbone optical path protection method, applied to optical line terminals, the method includes:

Obtain a first correspondence relationship and a second correspondence relationship, wherein the first correspondence relationship is the correspondence relationship between the main PON port in the primary passive optical network PON port cluster and the inlet interface of the optical matrix device, and the second correspondence relationship is The relationship is the corresponding relationship between the backup PON port in the backup PON port cluster and the outbound interface of the optical matrix device;

When an abnormality is detected in the first primary PON port in the primary passive optical network PON port cluster, the first backup PON port is selected from the backup PON port cluster; wherein, the backup PON port in the backup PON port cluster The number is less than or equal to the number of primary PON ports in the primary PON port cluster;

Migrate the data of the first primary PON port to the first backup PON port;

The first optical network unit group connected to the first main PON port is controlled to be connected to the first backup PON port according to the first corresponding relationship and the second corresponding relationship.
An electronic device including:

at least one first processor;

A first memory, at least one first program is stored in the first memory. When the at least one first program is executed by the at least one first processor, the method described in any one of claims 7-15 is implemented. Backbone optical path protection method.
A computer-readable medium. A computer program is stored on the computer-readable medium. When the computer program is executed by a processor, the backbone optical path protection method described in any one of claims 7-15 is implemented.
An optical matrix device including:

at least one second processor;

A second memory, at least one second program is stored in the second memory, and when the at least one second program is executed by the at least one second processor, the method described in any one of claims 1-6 is implemented. Backbone optical path protection method.
The optical matrix device of claim 19, further comprising:

The first optical matrix module and the second optical matrix module are configured to connect or disconnect the first incoming interface and the first outgoing interface under the control of the second processor.
An electronic device including:

at least one third processor;

The third memory stores at least one third program on the third memory. When the at least one third program is executed by the at least one third processor, the backbone optical path protection method of claim 16 is implemented.
The electronic device of claim 21, further comprising:

The first optical matrix module and the second optical matrix module are configured to connect or disconnect the first incoming interface and the first outgoing interface under the control of the third processor.
A backbone optical path protection system, including: optical line terminals and optical matrix equipment;

Wherein, the optical line terminal is configured to obtain a first correspondence relationship and a second correspondence relationship; wherein the first correspondence relationship is between the main PON port in the main passive optical network PON port cluster and the inlet interface of the optical matrix device The second corresponding relationship is the corresponding relationship between the backup PON port in the backup PON port cluster and the outbound interface of the optical matrix device; when the first primary passive optical network PON port cluster is detected, When an abnormality occurs in the PON port, select the first backup PON port from the backup PON port cluster; wherein the number of backup PON ports in the backup PON port cluster is less than or equal to the number of primary PON ports in the primary PON port cluster ; Migrate the data of the first main PON port to the first backup PON port; send switching action information to the optical matrix device according to the first corresponding relationship and the second corresponding relationship, and the switching action information is Instructing the optical matrix device to connect the first optical network unit group connected to the first main PON port to the first backup PON port;

The optical matrix device is configured to receive switching action information based on the first correspondence relationship and the second correspondence relationship sent by the optical line terminal; and to control the first optical fiber connected to the first main PON port according to the switching action information. The network unit group is connected to the first backup PON port.