WO2016169405A1

WO2016169405A1 - Passive optical network identification method and apparatus

Info

Publication number: WO2016169405A1
Application number: PCT/CN2016/077900
Authority: WO
Inventors: 李明生; 耿丹; 马壮
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-04-20
Filing date: 2016-03-30
Publication date: 2016-10-27
Also published as: CN106161071A

Abstract

The present invention provides a passive optical network identification method and apparatus. The method comprises: receiving a downlink wavelength of a downlink wavelength channel of a branch optical fiber, wherein the downlink wavelength carries carrier identifier information; matching the carrier identifier information carried in the downlink wavelength with pre-stored carrier identifier information; and when the matching result indicates that the carrier identifier information is consistent with the pre-stored carrier identifier information, displaying carrier information of the downlink wavelength and/or attribute information of the downlink wavelength. The problem of failing to effectively identify TWDM channel information of a carrier in a TWDM system is solved, and accordingly the TWDM channel information of the carrier is effectively identified.

Description

Method and device for identifying passive optical network

Technical field

The present invention relates to the field of communications, and in particular to a method and an apparatus for identifying a passive optical network.

Background technique

With the development of network technology, the use of the network to transmit a large number of voice, data, video and other services, so the bandwidth requirements continue to increase, Passive Optical Network (Passive Optical Network, referred to as PON) is generated under this demand.

1 is a schematic diagram of a topology of a PON system according to the related art. As shown in FIG. 1 , a PON system usually includes an optical line terminal (OLT) on the central side and an optical network unit on the user side (Optical Network Unit). It is composed of an ONU and an Optical Distribution Network (ODN). It usually adopts a point-to-multipoint network structure. ODN consists of passive optical components such as single-mode fiber and optical splitter, optical connector, etc., providing optical transmission medium for the physical connection between OLT and ONU.

As the bandwidth requirement is further increased, a Time and Wavelength Division Multiplexed Passive Optical Network (TWDM PON) system is proposed. FIG. 2 is a schematic diagram of a topology structure of a TWDM system according to the related art. As shown in FIG. 2, the TWDM system has an OLT, a light distribution network, and a plurality of ONUs, and each OLT has multiple OLT channel terminals. There are multiple TWDM channels in the TWDM system. Each OLT channel terminal and a group of ONUs work on one TWDM channel. Each TWDM channel includes one downstream wavelength channel and one or more upstream wavelength channels. A TWDM channel terminal on each TWDM channel manages a group of ONUs. The uplink wavelengths of a group of ONUs for transmitting uplink data are the same, and the downlink wavelengths for receiving downlink data are also the same. Different ONUs in the group of ONUs are time-division multiplexed. The way to transmit upstream data. The downstream wavelengths of different TWDM channels are different, and the uplink wavelengths used by each group of ONUs managed by different OLTs are also different. Each ONU sends uplink data in a specific uplink time slot according to the command of the OLT.

In the related art, in order to make better use of the already laid ODN resources, multiple operators can share ODN devices in one PON system, and each operator uses some TWDM channels in the TWDM system, in different ODNs, each The TWDM channels used by the home carrier can be the same or different. This becomes Open Access. In this case of Open access, when there are multiple TWDM channels in the ODN of a cell, and there are multiple operators using different TWDM channels, when the network of one user of the cell fails or there is a newly installed user The TWDM channel used by the same operator in different ODNs may be different, and one operator can use multiple TWDM channels in one ODN. When the TWDM channel information used by the operator is dynamically changed, the engineer needs to dynamically update and maintain in real time. The TWDM channel information used by each operator in each cell brings inconvenience to routine maintenance.

In the related art, in the TWDM system, the operator's TWDM channel information cannot be effectively identified, and an effective solution has not been proposed yet.

Summary of the invention

In the related art, in the TWDM system, the operator's TWDM channel information problem cannot be effectively identified, and the present invention provides a method and apparatus for identifying a passive optical network to solve at least the above problems.

According to an embodiment of the present invention, a method for identifying a passive optical network includes: receiving a downlink wavelength of a downlink wavelength channel of a branch fiber, where the downlink wavelength carries carrier identification information; The carrier identifier information carried in the downlink wavelength is matched with the pre-stored operator identifier information. If the matching result indicates that the carrier identifier information is consistent with a pre-stored carrier identifier information, the downlink wavelength operation is displayed. Attribute information and/or attribute information of the downstream wavelength.

In an embodiment of the present invention, the downlink wavelength of the downlink wavelength channel of the receiving branch fiber includes at least one of: receiving user tuning setting information, and tuning a downlink wavelength of the downlink wavelength channel of the receiving branch fiber according to the setting information; The stored tuning strategy automatically tunes the downstream wavelength of the downstream wavelength channel of the receiving branch fiber.

In an embodiment of the present invention, the pre-stored carrier identification information is obtained by receiving one or more operator identification information that is input before tuning the downlink wavelength of the downlink wavelength channel of the branch fiber, and inputting The carrier identification information is used as the pre-stored carrier identification information.

In the embodiment of the present invention, the operator identification information carried in the downlink wavelength is carried in the passive optical network identifier field of the downlink frame of the downlink wavelength.

In an embodiment of the present invention, displaying the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength includes: displaying operator information of the downlink wavelength described below: carrier identifier information; and/or displaying the following At least one attribute information of the downlink wavelength: frequency information of the downlink wavelength, wavelength information, and optical power value of the downlink wavelength.

In the embodiment of the present invention, the method further includes: displaying the connection information of the downlink wavelength channel or displaying the optical fiber line when the matching result indicates that the operator identification information is inconsistent with all the pre-stored operator identification information. Error message.

According to an embodiment of the present invention, there is also provided a device for identifying a passive optical network, comprising: a receiving module, configured to receive a downlink wavelength of a downlink wavelength channel of a branch fiber, wherein the downlink wavelength carries an operator And the matching module is configured to match the carrier identification information carried in the downlink wavelength with a pre-stored carrier identification information; the first display module is configured to indicate the carrier identifier information in the matching result When the pre-stored carrier identification information is consistent, the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength are displayed.

In an embodiment of the present invention, the receiving module includes: a user setting unit configured to receive user tuning setting information, and adjust a downlink wavelength of a downlink wavelength channel of the receiving branch fiber according to the setting information; and an automatic setting unit is set to use The pre-stored tuning strategy automatically tunes the downstream wavelength of the downstream wavelength channel of the receiving branch fiber.

In an embodiment of the invention, the apparatus further includes: an input module configured to receive the input one or more operator identification information before tuning the downlink wavelength of the downlink wavelength channel of the receiving branch fiber, and input the operator The identification information is used as pre-stored carrier identification information.

In an embodiment of the present invention, the device further includes: a second display module, configured to display the downlink wavelength channel if the matching result indicates that the operator identification information is inconsistent with all pre-stored operator identification information Connection information or display fiber line error information.

The downlink wavelength of the downlink wavelength channel of the branch fiber is received by the present invention, wherein the downlink wavelength carries carrier identification information, and the carrier identification information carried in the downlink wavelength is matched with the pre-stored carrier identification information. If the matching result indicates that the operator identification information is consistent with a pre-stored carrier identification information, the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength are displayed, which is not effective in the TWDM system. The TWDM channel information problem of the operator is identified, and the TWDM channel information of the operator is effectively identified.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a topology structure of a PON system according to the related art;

2 is a schematic diagram of a topology structure of a TWDM system according to the related art;

3 is a flowchart of a method for identifying a passive optical network according to an embodiment of the present invention;

4 is a structural block diagram 1 of an identification device for a passive optical network according to an embodiment of the present invention;

FIG. 5 is a structural block diagram 2 of an apparatus for identifying a passive optical network according to an embodiment of the present invention; FIG.

FIG. 6 is a structural block diagram 3 of an apparatus for identifying a passive optical network according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a method for identifying a passive optical network is provided, which is applied to a time division wavelength division multiplexing passive optical network TWDM PON system, and FIG. 3 is a method for identifying a passive optical network according to an embodiment of the present invention. The flow chart is shown in Figure 3. The process includes the following steps:

Step S302, receiving a downlink wavelength of a downlink wavelength channel of the branch fiber, where the downlink wavelength carries carrier identification information;

Step S304, matching carrier identification information carried in the downlink wavelength with pre-stored carrier identification information.

Step S306, the matching result indicates that the operator identification information is consistent with a pre-stored carrier identification information. Next, the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength are displayed.

Through the above steps, in the time division wavelength division multiplexing passive optical network, connected to a branch optical fiber of the passive optical network PON system, by carrying the pre-stored carrier identification information and the carrier carried in the received downlink wavelength The identification information is matched. When the matching is consistent, the problem that the TWDM channel information of the operator cannot be effectively identified in the TWDM system is solved, and the TWDM channel information of the operator is effectively identified.

In the embodiment of the present invention, the downlink wavelength of the downlink wavelength channel of the receiving branch fiber may be received by the user to receive the downlink wavelength, or may be automatically tuned to receive the downlink wavelength. For example, the user tuning setting information may be received, and the receiving branch is tuned according to the setting information. The downstream wavelength of the downstream wavelength channel of the fiber can also be used to automatically tune the downstream wavelength of the downstream wavelength channel of the receiving branch fiber using a pre-stored tuning strategy.

In the embodiment of the present invention, there are many ways to pre-store the operator identification information, and the operator identification information stored in the identified device may be updated by means of system upgrade, or may be manually input before being recognized. The device operator identification information may be obtained by: receiving one or more operator identification information of the input before the tuning of the downlink wavelength of the downlink wavelength channel of the branch fiber, and inputting the operation The merchant identification information is used as the pre-stored carrier identification information.

In this embodiment, the carrier identification information carried in the downlink wavelength may be carried in the passive optical network identifier field of the downlink frame of the downlink wavelength.

In this embodiment, the operator information indicating the downlink wavelength may include: operator identification information. The attribute information indicating the downlink wavelength may include: frequency information of the downlink wavelength, wavelength information, and an optical power value of the downlink wavelength.

In this embodiment, when the matching result indicates that the operator identification information is inconsistent with all the pre-stored carrier identification information, the connection information of the downlink wavelength channel or the error information of the optical fiber line may be displayed, and the downlink information may also be displayed. Downstream wavelength frequency information corresponding to the wavelength channel, and optical power value of the downlink wavelength

An identification device for a passive optical network is also provided in this embodiment. The device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

4 is a structural block diagram 1 of an apparatus for identifying a passive optical network according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes

The receiving module 42 is configured to receive a downlink wavelength of a downlink wavelength channel of the branch fiber, where the downlink wavelength carries carrier identification information;

The matching module 44 is configured to match the carrier identification information carried in the downlink wavelength with the pre-stored carrier identification information.

The first display module 46 is configured to display the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength, if the matching result indicates that the operator identifier information is consistent with the pre-stored one carrier identifier information.

The receiving module 42 receives the downlink wavelength of the downlink wavelength channel of the branch fiber, and the matching module 44 is configured to match the carrier identifier information carried in the downlink wavelength with the pre-stored carrier identifier information, and the matching result indicates the When the carrier identification information is consistent with the pre-stored carrier identification information, the first display module 46 displays the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength, and the device fails to solve the problem in the TWDM system. The TWDM channel information problem of the operator is effectively identified, and the TWDM channel information of the operator is effectively identified.

In this embodiment, the receiving module 42 includes: a user setting unit configured to receive user tuning setting information, and adjust a downlink wavelength of a downlink wavelength channel of the receiving branch fiber according to the setting information; and an automatic setting unit configured to use pre-storage The tuning strategy automatically tunes the downstream wavelength of the downstream wavelength channel of the receiving branch fiber.

FIG. 5 is a block diagram showing the structure of a device for identifying a passive optical network according to an embodiment of the present invention. As shown in FIG. 5, the device includes the same function and function of FIG. 4, and the device further includes:

The input module 52 is configured to receive the input one or more operator identification information and use the input operator identification information as the pre-stored operator identification information before tuning the downlink wavelength of the downlink wavelength channel of the branch fiber.

FIG. 6 is a structural block diagram 3 of a device for identifying a passive optical network according to an embodiment of the present invention. As shown in FIG. 6, the device includes the same function and function of FIG. 4, and the device further includes:

The second display module 62 is configured to display the connection information of the downlink wavelength channel or display the optical fiber line error information if the matching result indicates that the operator identification information is inconsistent with all the pre-stored operator identification information. .

The invention will now be described in detail in connection with the preferred embodiments.

The handheld identification device proposed in the preferred embodiment solves the problem that the engineering personnel need to dynamically update and maintain the TWDM channel information used by each operator in each cell in the case of Open Access.

In a preferred embodiment, the relevant information of an operator's identification information is input to the handheld device, and the handheld device is connected to a branch fiber of the PON system, or all or part of the operators are pre-stored in the handheld device. Identification information. The handheld device can manually adjust the receiving wavelength. When the handheld device detects a downlink wavelength, the handheld device compares the carrier identification information carried in the downlink wavelength with the carrier information in the handheld device. When the two information matches, the display is displayed. Some or all of the following information: current carrier identification information, current downlink wavelength information, frequency information of the current downlink wavelength, and optical power value of the current downlink wavelength.

In another preferred embodiment, inputting information about an operator's identification information to the handheld device and connecting the handheld device to a branch fiber of the PON system, the handheld device can automatically tune the receiving wavelength when When the handheld device detects a downlink wavelength, the handheld device compares the carrier identification information carried in the downlink wavelength with the carrier information in the input handheld device. When the two information matches, the receiving wavelength of the handheld device is fixed at the current receiving wavelength. Display some or all of the following information: current carrier identification information, current downlink wavelength information, frequency information of the current downlink wavelength, and optical power value of the current downlink wavelength.

In the above preferred implementation, when each TWDM OLT channel terminal in the TWDM PON system transmits downlink data by using one downlink wavelength, the OLT channel terminal carries the information of the operator identifier to which the downlink wavelength belongs to the passive light of the downlink frame. Network identification domain. When the handheld device detects a downlink wavelength, the handheld device compares the carrier identification information carried in the downlink frame with the carrier information entered in the handheld device.

With the method of the preferred embodiment, the engineering personnel can automatically detect the downlink signal of an operator at any branch fiber of the ODN, and can quickly determine the optical path connection.

In the TWDM PON system, there are multiple TWDM channels. Each TWDM channel uses one downlink wavelength and one or more upstream wavelengths. In the case of Open Access, multiple operators can share one TWDM ODN network, each operating. The quotient can use one or more TWDM channels. In the above case, when a user on a TWDM channel corresponding to an operator is a newly installed user or the network corresponding to the user fails, a handheld device can be used to detect the optical path connection by using the following method: the characteristic of the handheld device is: storage The identification information of all or part of the operators can be read from the carrier information carried in the downlink frame of the PON system, and the operator information can be input, and the read carrier information can be compared with the input operator information. The wavelength information, frequency information, power information, and the like of the current downlink wavelength used by the operator can be displayed. When transmitting downlink data for each downlink wavelength in the TWDM PON system, the information of the carrier identifier to which the downlink wavelength belongs is carried, for example, the passive optical network identity (PON ID) of the carrier identifier information is encapsulated in the downlink frame. ) in the section.

In a preferred implementation of automatically tuning the receive wavelength, the following steps are included:

Step 72: Input an operator's information to the handheld device and connect the handheld device to a branch fiber in the TWDM PON system.

Step 74: The handheld device can automatically tune the receiving wavelength. When the handheld device detects a downlink wavelength, the handheld device carries the carrier identification information of the PON ID part in the downlink frame and the operator information in the input handheld device in the downlink wavelength. For comparison, when the two information matches, the receiving wavelength of the handheld device is fixed at the current receiving wavelength, and some or all of the following information is displayed: current carrier identification information, current downlink wavelength information, current downlink wavelength frequency information, current downlink wavelength. Optical power value.

In a preferred implementation of manually tuning the receive wavelength, the following steps are included:

Step 82: Enter an operator's information to the handheld device and connect the handheld device to a branch fiber in the TWDM PON system.

Step 84: The handheld device can manually tune the receiving wavelength. When the handheld device detects a downlink wavelength, the handheld device carries the carrier identification information of the PON ID part in the downlink frame and the operator information in the input handheld device in the downlink wavelength. For comparison, when the two information matches, some or all of the following information is displayed: current carrier identification information, current downlink wavelength information, frequency information of the current downlink wavelength, and optical power value of the current downlink wavelength.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM, including a number of instructions to make a terminal device (can be a mobile phone, a computer, The server, or network device, etc.) performs the method of various embodiments of the present invention.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred 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.

Industrial applicability

According to the foregoing technical solution provided by the embodiment of the present invention, the downlink wavelength of the downlink wavelength channel of the branch fiber is received, where the downlink wavelength carries the operator identification information; the carrier identification information carried in the downlink wavelength and the pre-stored The operator identification information is matched; if the matching result indicates that the operator identification information is consistent with a pre-stored carrier identification information, the operator information of the downlink wavelength and/or the attribute information of the downlink wavelength are displayed, and the solution is solved. In the TWDM system, the operator's TWDM channel information cannot be effectively identified, and the TWDM channel information of the operator is effectively identified.

Claims

A method for identifying a passive optical network, comprising:

Receiving a downlink wavelength of a downlink wavelength channel of the branch fiber, where the downlink wavelength carries carrier identification information;

Matching carrier identification information carried in the downlink wavelength with pre-stored carrier identification information;

And displaying the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength, if the matching result indicates that the identifier information of the carrier is consistent with one of the pre-stored identifiers.
The method according to claim 1, wherein the downlink wavelength of the downlink wavelength channel of the receiving branch fiber comprises at least one of:

Receiving user tuning setting information, and tuning a downlink wavelength of the downlink wavelength channel of the receiving branch fiber according to the setting information;

The downstream wavelength of the downstream wavelength channel of the receiving branch fiber is automatically tuned using a pre-stored tuning strategy.
The method of claim 1, wherein the pre-stored operator identification information is obtained by:

Before the downlink wavelength of the downlink wavelength channel of the branch fiber is tuned, the input one or more operator identification information is received, and the input operator identification information is used as the pre-stored operator identification information.
The method according to claim 1, wherein the carrier identification information carried in the downlink wavelength is carried in a passive optical network identification field of a downlink frame of the downlink wavelength.
The method according to any one of claims 1 to 4, wherein displaying the operator information of the downlink wavelength and/or the attribute information of the downlink wavelength comprises:

Displaying carrier information of the following downlink wavelengths: carrier identification information; and/or displaying attribute information of at least one of the following downlink wavelengths: frequency information of the downlink wavelength, wavelength information, and optical power of the downlink wavelength value.
The method of any of claims 1 to 4, wherein the method further comprises:

When the matching result indicates that the operator identification information is inconsistent with all the pre-stored carrier identification information, the connection information of the downlink wavelength channel or the display of the optical fiber line error information is displayed.
A recognition device for a passive optical network, comprising:

a receiving module, configured to receive a downlink wavelength of a downlink wavelength channel of the branch fiber, where the downlink wavelength carries carrier identification information;

The matching module is configured to match the carrier identification information carried in the downlink wavelength with a pre-stored carrier identification information;

a first display module, configured to indicate, in the matching result, the operator identification information and a pre-stored operator When the identifier information is consistent, the carrier information of the downlink wavelength and/or the attribute information of the downlink wavelength are displayed.
The apparatus of claim 7, wherein the receiving module comprises:

a user setting unit, configured to receive user tuning setting information, and adjust a downlink wavelength of the downlink wavelength channel of the receiving branch fiber according to the setting information;

An automatic setting unit configured to automatically tune the downstream wavelength of the downstream wavelength channel of the receiving branch fiber using a pre-stored tuning strategy.
The apparatus of claim 7 wherein said apparatus further comprises:

The input module is configured to receive the input one or more operator identification information before tuning the downlink wavelength of the downlink wavelength channel of the receiving branch fiber, and use the input operator identification information as the pre-stored operator identification information.
The device according to any one of claims 7 to 9, wherein the device further comprises:

The second display module is configured to display the connection information of the downlink wavelength channel or display the optical fiber line error information if the matching result indicates that the operator identification information is inconsistent with all the pre-stored operator identification information.