WO2017050253A1

WO2017050253A1 - Method and system for detecting optical line terminal (olt) port

Info

Publication number: WO2017050253A1
Application number: PCT/CN2016/099727
Authority: WO
Inventors: 朱梅冬; 陆建鑫
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-25
Filing date: 2016-09-22
Publication date: 2017-03-30
Also published as: CN106559131A

Abstract

A method for detecting an optical line terminal (OLT) port. The method comprises: an information receiver accessing a port to be detected; a network management system instructing an optical line terminal (OLT) to issue identification information; and the information receiver receiving the identification information sent by the OLT through an on-line optical generation device. By means of the solution, information about a maintenance port can be quickly known, which is irrelevant to a service, and there is no need to modify the PON protocol, so that maintenance is simpler and more convenient, and the maintenance efficiency is improved.

Description

Method and system for detecting OLT port of optical line terminal

Technical field

This document relates to, but is not limited to, the field of communications, and in particular to a port detection method and system.

Background technique

As an emerging technology, optical fiber communication has developed rapidly in recent years and is widely used in the history of communication. It is also an important symbol of the world's new technological revolution and the main transmission tool for various information in the future information society. Fiber to The Building (FTTB) and Fiber to The Home (FTTH) have become the best means to solve the bandwidth bottleneck problem of access networks, while passive optical network technology uses its high bandwidth and long distance. The advantages of transmission and point-to-multipoint topology are favored, and it has become the main application architecture for FTTH and FTTB deployment in various countries. Passive Optical Network (PON) is a passive optical access technology that uses a point-to-multipoint topology. At present, xPON systems have been deployed in large numbers at home and abroad. At the same time, the operation and maintenance technologies of PON networks have continued to grow and develop.

Since many optical cables are laid underground, the branches under the optical line terminal (OLT) may not be clear to the user side or the cable transfer box, and it is troublesome in maintenance. If the OLT sends the identification information through the broadcast frame, the terminal receives the broadcast packet and learns the OLT information. This procedure is complicated, and the protocol of the PON needs to be modified. At the same time, the terminal needs to be able to resolve the protocol, and the cost is also high.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a method and system for detecting an OLT port of an optical line terminal, so as to implement a more convenient port detection.

Embodiments of the present invention provide an optical line terminal OLT port detecting method, and the method package include:

The information receiver accesses the port to be detected;

The network management system instructs the optical line terminal OLT to send identification information;

The information receiver receives the identification information that the OLT transmits through the online light generating device.

Optionally,

After receiving the OLT identification information sent by the OLT by the online light generating device, the information receiver further includes:

The information receiver parses logical connection information and/or physical connection information in the identification information.

Optionally, after the network line system instructs the optical line terminal to send the identification information, the OLT further includes:

If the information receiver does not receive the identification information sent by the OLT through the online light generating device, it determines that the physical link is faulty.

Optionally, the sending, by the optical line terminal OLT, the identification information includes:

The OLT online light generating device repeatedly transmits the identification information at a time or repeatedly for a predetermined period of time.

Optionally, the network management system instructs the optical line terminal to send the identification information by the OLT, including:

The network management system receives an instruction to remotely log in to the network management system through the Internet to all or part of the OLT under the jurisdiction of the network management system, and the network management system instructs the optical line terminal OLT to send the identification information according to the instruction.

An embodiment of the present invention further provides an optical line terminal OLT port detecting system, where the system includes an information receiver, a network management system, and an OLT online light generating device;

The information receiver is configured to access a port to be detected; and the identification information sent by the optical line terminal OLT through the OLT online light generating device;

The network management system is configured to: after the information receiver accesses the port to be detected, instruct the OLT to send the identification information;

The OLT online light generating device is configured to transmit the identification information.

Optionally,

The information receiver is further configured to: after receiving the OLT identification information sent by the OLT by the online light generating device, parse the logical connection information and/or the physical connection information in the identification information.

Optionally,

The information receiver is further configured to: after the network management system instructs the optical line terminal OLT to send the identification information, if the information receiver does not receive the identification information sent by the OLT through the online light generating device, determine the physical chain. Road failure.

Optionally, the OLT online light generating device is configured to send the identification information repeatedly for one time or repeatedly for a predetermined period of time.

Optionally,

The system further includes a terminal device, and the terminal device is configured to log in to the network management system through the Internet to send the self-report to all or part of the OLT under the jurisdiction of the network management system after the information receiver is connected to the port to be detected. An instruction to identify information;

The network management system is configured to implement the indication information sent by the OLT indicating the optical line terminal by:

The network management system instructs the OLT to self-report the identification information according to the instruction.

Optionally, the network management system is configured to: notify the optical line terminal OLT to send identification information by:

The network management system receives an instruction for remotely logging in to the network management system through the Internet to all or part of the OLT under the jurisdiction of the network management system to issue self-reporting identification information;

The network management system instructs the optical line terminal OLT to send the identification information according to the instruction.

The above solution can quickly learn the information of the maintenance port, and has nothing to do with the service. It does not need to modify the PON protocol, which makes maintenance easier and improves the maintenance efficiency.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a flowchart of a method for detecting an OLT port of an optical line terminal in Embodiment 1;

2 is a schematic structural diagram of an OLT port detecting device for an optical line terminal in Embodiment 1;

Figure 3 is a schematic structural view of the second embodiment;

Figure 4 is a schematic view of the connection in the second embodiment;

5a is a schematic structural diagram of an inline optical generating apparatus in which an optical transmitting circuit that is independent of other PON service lights is multiplexed in Embodiment 2;

FIG. 5b is a schematic structural diagram of an online light generating device multiplexed with a PON service optical transmitting circuit;

FIG. 6 is a schematic structural diagram of an information receiver in Embodiment 2.

Embodiments of the invention

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

Embodiment 1

As shown in FIG. 1 , this embodiment provides a method for detecting an OLT port of an optical line terminal, where the method includes:

Step S11: The information receiver accesses the port to be detected;

Step S12: The network management system instructs the optical line terminal OLT to send the identification information;

Optionally, the terminal device can remotely log in to the network management system through the Internet, and send instructions to the OLT under the jurisdiction of the network management system to send the identification information. The network management system instructs the optical line terminal OLT to send the identification information according to the instruction. After receiving the command, the OLT may transmit the identification information once by the OLT online light generating device or repeatedly for a predetermined period of time.

Step S13: The information receiver receives the identification information that is sent by the OLT through the online light generating device.

Optionally, after step S13, the method further includes:

Step S14: The information receiver parses the logical connection information and/or the physical connection information in the identification information.

Optionally, after step S12, the method further includes:

Step S15: If the information receiver does not receive the identification information sent by the OLT through the online light generating device, determine that the physical link is faulty.

It should be noted that step S14 is performed after step S13, step S15 is performed after step S12, and the sequence is not limited between step S14 and step S15.

As shown in Figure 2, this embodiment further provides an optical line terminal OLT port detection system, the system includes an information receiver 11, a network management system 12, and an OLT online light generating device 13;

The information receiver 11 is configured to access a port to be detected; and the identification information transmitted by the optical line terminal OLT through the OLT online light generating device 13.

The network management system 12 is configured to instruct the OLT to deliver identification information after the information receiver 11 accesses the port to be detected.

Optionally,

The information receiver 11 is further configured to parse the logical connection information and/or the physical connection information in the identification information after receiving the OLT identification information sent by the OLT through the online light generating device 13.

Optionally,

The information receiver 11 is further configured to: after the network management system 12 instructs the optical line terminal OLT to send the identification information, if the information receiver 11 does not receive the identification information sent by the OLT through the online light generating device 13, Then determine the physical link failure.

Optionally,

The OLT online light generating device 13 is configured to transmit the identification information in a single transmission or repeatedly for a predetermined period of time.

Optionally,

The system further includes a terminal device 14; the terminal device 14 is configured to log in to the network management system 12 through the Internet to send all or part of the OLT under the jurisdiction of the network management system 12 after the information receiver 11 accesses the port to be detected. An instruction to issue self-reporting identification information;

The network management system instructs the optical line terminal to send the identification information to the OLT, including:

The network management system instructs the OLT to self-report identification information according to the instruction.

In the embodiment of the present invention, the central-end online light generating device can multiplex the downstream light generating device of the OLT, and modulate at a downstream wavelength, and can also add a laser of another wavelength without affecting the service.

The information receiver only receives the OLT identification information sent by the central office optical generating device, and is not directly associated with the PON service, and the service light or service packet is filtered out. The terminal device such as the PDA can directly read the information received by the information receiver, and can also log in to the Internet through wired or wireless, and can be used to check the topology of each ODN network and all optical line terminals OLT/optical network unit ONU/optical network equipment. You can log in to the NMS for management, such as the status of the ONT.

In the embodiment of the present invention, the OLT identification information is sent by the central office online light generating device, and the information about the OLT, the ODN, and the like can be known by accessing the information receiver at any point of the ODN independently of the PON protocol.

Embodiment 2

The technical solutions of the embodiments of the present invention are further described below with reference to the accompanying drawings.

As shown in FIG. 3 and FIG. 4, the terminal device takes a handheld PDA as an example, and the information receiver and the PDA may be independent or integrated. The PDA can remotely log in to the network management by wired or wireless.

The central end optical light generating device shown in FIG. 5a is built in an OLT optical module, and the online light is The generating device includes a generating controller, a driver, and a laser LD; the central-end in-line light generating device does not affect the PON service light. Compared to a conventional OLT optical module, a laser of another wavelength (the other wavelength is relative to the PON service wavelength) and a corresponding transmitting circuit are added. It is also possible to multiplex lasers and transmission circuits that are independent of the PON service light. For example, an optical time domain reflectometer (OTDR) function can multiplex the OTDR laser and the transmission circuit. The central-end in-line light generating device shown in Fig. 5b multiplexes the transmission circuit of the PON service light and modulates the traffic light. In order not to affect the pin definition of the relevant optical module, the I2C interface in the optical module can be used to transmit the information packet.

As shown in FIG. 6, the information receiver includes an optical filter, a photodiode PD, an amplifier, and a parser; in operation, the optical filter is used to filter the light of the service wavelength, and then the photodiode is turned. The electricity information is amplified and analyzed.

When constructing or maintaining on a PON network, it is often necessary to know the specific information of the on-site network to avoid operational errors. At this time, the information receiver is connected to the port to be checked in the optical distribution network (ODN) network, PDA. Accessing the Internet through WIFI, mobile base station, or wired, remotely logging in to the network management system, and sending commands to the OLT in the network management system. The OLT sends the identification information to its own OLT optical module, such as the I2C interface of the optical module. The central-end in-line light generating device in the optical module (the laser of the following wavelength, the laser of the OTDR, etc.) converts the identification packet into an optical signal and transmits it to the ODN network where it is located.

The information receiver receives the identification information packet sent by the OLT from the ODN, and can find all the information of the OLT, the ONU/ONT, and the ODN and the topology of the network in the network according to the information packet. If no information is received, the network failure is reported or is not under the jurisdiction.

The OLT identification information packet may include physical connection information and logical connection information, such as an OLT site, a frame number, a slot number, and a port number, and logical connection information such as a VLAN. In order to reduce the parsing error, the signature and the check code can be added.

The above technical solutions can quickly learn the OLT information of the maintenance port, the network topology information, and the information about the ONU/ONT. It is independent of the PON service and is convenient for on-site personnel maintenance and construction.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.

The above description is only an alternative embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

One of ordinary skill in the art will appreciate that all or a portion of the steps described above can be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic or optical disk, and the like. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Accordingly, each module/module in the foregoing embodiment may be implemented in the form of hardware, or may be implemented by using a software function module. Formal realization. This application is not limited to any specific combination of hardware and software.

Industrial applicability

The above technical solution can quickly learn the OLT information of the maintenance port, the network topology information, and the information about the ONU/ONT. It is independent of the PON service and is convenient for on-site personnel maintenance and construction.

Claims

An optical line terminal OLT port detecting method, the method comprising:

The information receiver accesses the port to be detected;

The network management system instructs the optical line terminal OLT to send identification information;

The information receiver receives the identification information that the OLT transmits through the online light generating device.
The method of claim 1 further comprising:

After the information receiver receives the OLT identification information sent by the OLT through the online light generating device, the information receiver parses the logical connection information and/or the physical connection information in the identification information.
The method of claim 1 further comprising:

After the network management system instructs the optical line terminal to send the identification information, if the information receiver does not receive the identification information sent by the OLT through the online light generating device, it determines that the physical link is faulty.
The method of claim 1, wherein the transmitting, by the optical line terminal OLT, the identification information comprises:

The OLT online light generating device repeatedly transmits the identification information at a time or repeatedly for a predetermined period of time.
The method according to any one of claims 1 to 4, wherein the network management system instructs the optical line terminal OLT to transmit the identification information, including:

The network management system receives an instruction to remotely log in to the network management system through the Internet to all or part of the OLT under the jurisdiction of the network management system, and the network management system instructs the optical line terminal OLT to send the identification information according to the instruction.
An optical line terminal OLT port detecting system, the system comprising an information receiver, a network management system and an OLT online light generating device;

The information receiver is configured to access a port to be detected; and the identification information sent by the optical line terminal OLT through the OLT online light generating device;

The network management system is configured to: after the information receiver accesses the port to be detected, instruct the OLT to send the identification information;

The OLT online light generating device is configured to transmit the identification information.
The system of claim 6

The information receiver is further configured to: after receiving the OLT identification information sent by the OLT by the online light generating device, parse the logical connection information and/or the physical connection information in the identification information.
The system of claim 6

The information receiver is further configured to: after the network management system instructs the optical line terminal OLT to send the identification information, if the information receiver does not receive the identification information sent by the OLT through the online light generating device, determine the physical chain. Road failure.
The system of claim 6 wherein

The OLT online light generating device is configured to transmit the identification information repeatedly for one time or repeatedly for a predetermined period of time.
A system according to any one of claims 6 to 9, the system further comprising a terminal device;

The terminal device is configured to: after the information receiver accesses the port to be detected, log in to the network management system through the Internet to send instructions for self-reporting identification information to all or part of the OLT under the jurisdiction of the network management system;

The network management system is configured to implement the indication information sent by the OLT indicating the optical line terminal by:

The network management system instructs the OLT to self-report identification information according to the instruction.
A system according to any one of claims 6 to 9, wherein

The network management system is configured to implement the indication information sent by the OLT indicating the optical line terminal by:

The network management system receives an instruction for remotely logging in to the network management system through the Internet to all or part of the OLT under the jurisdiction of the network management system to issue self-reporting identification information;

The network management system instructs the optical line terminal OLT to send the identification information according to the instruction.