WO2012003735A1

WO2012003735A1 - Method and device for determining wavelength collision in reconfiguration optical add/drop multiplexer system

Info

Publication number: WO2012003735A1
Application number: PCT/CN2011/073005
Authority: WO
Inventors: 董天龙
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-07-09
Filing date: 2011-04-19
Publication date: 2012-01-12
Also published as: CN102316389A; CN102316389B

Abstract

A method and device for determining wavelength collision in a Reconfiguration Optical Add/Drop Multiplexer (ROADM) system are provided in the present invention which relates to optical communication technology field. The device at least comprises a wavelength detection unit, an information processing unit and an information storage unit; the wavelength detection unit is applied to obtain the wavelength information currently inputted to the ROADM system by wavelength scan, and to send the wavelength information currently inputted to ROADM to the information processing unit (S10); the information processing unit is applied to query the information storage unit for the wavelength information previously inputted to ROADM, then to compare the wavelength information currently inputted to ROADM with the wavelength information previously inputted to ROADM, and to determine whether the wavelength information currently inputted to ROADM collides with the wavelength information previously inputted to ROADM (S11). The present invention can effectively avoid the influence to normal service transmission caused by wavelength collision.

Description

Method and device for determining wavelength conflict in reconfigurable add/drop multiplex system

The present invention relates to the field of optical communication technologies, and more particularly to a method and apparatus for determining wavelength collisions in a Reconfiguration Optical Add/drop Multiplexer (ROADM). Background technique

With the continuous development of optical communication technologies, ROADMs have been more and more widely applied to optical fiber communication systems, providing more intelligent functions to quickly respond to network topology and business distribution changes, to achieve business Flexible scheduling.

ROADM can implement uplink and downlink and direct-through configurations in wavelengths in the optical domain. It can realize the connection between any two points without manual field deployment. Its flexibility can fully meet the needs of data services by providing nodes. The refactoring capability allows the DWDM network to be easily reconstructed without manual operations, greatly improving work efficiency and response speed to new customer requirements, while effectively reducing operating and maintenance costs.

At present, the implementation of ROADM is mainly divided into three categories: Planar Lightwave Circuits (PLC), Wavelength Blocker (WB), and Wavelength Selective Switch (WSS). Among them, ROADM based on WSS technology has developed rapidly in recent years. WSS is based on the Micro-Electro-Mechanical Systems (MEMS) optical platform with features such as low bandwidth, low dispersion, and simultaneous support for 10/40 Gbit/s optical signals. Using free-space optical switching technology, the number of uplink and downlink waves is small, but it can support higher dimensions. ROADM based on WSS technology has gradually become the technology of choice for ROADMs above 4D.

At present, there are many specific implementations of ROADM based on WSS technology, one is common. The ROADM based on WSS technology, its main configuration is shown in Figure 1. Although ROADM provides solutions for intelligent networks with its flexible and powerful wavelength reconfigurability, it adapts to the intelligent development trend of DWDM networks. However, ROADM has the inherent drawback that wavelength conflicts may occur. As can be seen from Figure 1, in the ROADM, to achieve complete and flexible wavelength scheduling, a coupler optical multiplexer (OMU) is generally required at the wavelength input. The advantage of this is that when tuning the wavelength of the Optical Transport Unit (OTU) to reconstruct the route, it is not necessary to change the actual fiber connection. At the same time, however, a drawback is that in existing ROADMs, wavelength conflicts are inevitably generated because it is impossible to determine which event or operation causes a wavelength conflict. For example, the prior art cannot determine that there are two OTUs of the same wavelength in multiple OTUs on the road, and therefore, wavelength conflicts are inevitably generated in the ROADM. Summary of the invention

The main object of the present invention is to provide a method for determining a wavelength conflict in a reconfigurable add/drop multiplex system, and a device for determining a wavelength conflict in a reconfigurable add/drop multiplex system, which can be implemented in The ROADM quickly locates events or operations that cause wavelength collisions, effectively avoiding the impact on normal traffic transmission.

The invention provides a method for determining a wavelength conflict in a reconfigurable add/drop multiplex system (ROADM), comprising:

The wavelength detecting unit obtains the wavelength information of the current input ROADM by using the wavelength scanning, and sends the wavelength information of the current input ROADM to the information processing unit;

The information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM to determine whether the wavelength information of the current input ROADM is original. The wavelength information of the input ROADM conflicts.

Preferably, the information processing unit queries the information storage unit to obtain the original input ROADM. The wavelength information is compared with the wavelength information of the original input ROADM to determine whether the wavelength information of the current input ROADM conflicts with the wavelength information of the original input ROADM.

The information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, determines the wavelength information of the original input ROADM, and has the wavelength information before the optical forwarding unit (OTU) is tuned, and then the wavelength of the current input ROADM. Comparing the information with the wavelength information of the original input ROADM, determining that the wavelength information of the current input ROADM does not have the wavelength information before the OTU is tuned, but the wavelength information of the OTU is tuned, and further determining the location The wavelength information of the original input ROADM has the same wavelength as the wavelength after the OTU is tuned, and further determines that the optical power value of the wavelength information after the OTU is tuned is greater than the wavelength that is the same as the wavelength after the OTU is tuned. The corresponding optical power value, and the difference between the two is not less than the preset optical power value, and then determines that the wavelength of the input ROADM and the tuned wavelength conflicts with the wavelength of the original input ROADM.

Preferably, the information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM to determine the wavelength of the current input ROADM. The steps of whether the information conflicts with the wavelength information of the original input ROADM are as follows:

The information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines the wavelength information of the current input ROADM. And not increasing the new wavelength information, and further determining that the optical power value of the original OTU wavelength information in the wavelength information of the current input ROADM is greater than the optical power of the original OTU wavelength information in the original input ROADM wavelength information. Value, and the difference between the two is not less than the preset optical power value, and then determine the wavelength of the new OTU input to the ROADM and the wavelength of the original input ROADM Preferably, the information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM to determine the wavelength of the current input ROADM. The steps of whether the information conflicts with the wavelength information of the original input ROADM are as follows:

The information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines the wavelength information of the current input ROADM. The optical power value of the at least one OTU of the wavelength information of the current input ROADM is greater than the original input ROADM. The optical power value of the wavelength information of the original at least one OTU in the wavelength information, and the difference between the two is not less than the preset optical power value, and then determining that at least one of the plurality of wavelengths of the input ROADM has drifted, and The drifting wavelength conflicts with the wavelength of the original input ROADM.

Preferably, the method further includes:

After receiving the wavelength tuning success message returned by the tuned OTU, the network management unit sends the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned to the information processing unit; the information processing unit sends the wavelength scan to the wavelength detecting unit. Commands that scan for wavelengths that are output after multiple wavelengths have been coupled.

Preferably, before the network management unit receives the wavelength tuning success message, the method further includes:

The network management unit sends a query command carrying the target tuning wavelength information to the information processing unit;

The information processing unit queries the information storage unit according to the query command to save the same wavelength as the target harmonic length;

The network management unit sends an OTU related to the purpose tuning wavelength information according to the query result. Send a wavelength tuning command;

The OTU associated with the destination tuning wavelength information tunes the original wavelength to the destination wavelength based on the tuning wavelength command and then returns a wavelength tuning success message to the network management unit.

The network management unit sends a wavelength tuning command to the OTU that needs to be tuned;

The OTU that needs to be tuned tunes the original wavelength to the destination wavelength according to the tuning wavelength command, and then returns a wavelength tuning success message to the network management unit.

Preferably, after determining that there is a conflict in the wavelength, the method further includes:

The information processing unit sends an alarm display command for the wavelength conflict of the ROADM to the alarm display unit, and sends the information of the wavelength conflict of the ROADM to the network management unit;

The alarm display unit displays a wavelength conflict alarm on the ROADM according to the alarm display command. Preferably, the method further comprises:

The information processing unit sends a blocking command to the blocking unit corresponding to the port of the ROADM, and sends the blocked information of the ROADM to the network management unit;

The blocking unit blocks the port of the ROADM according to the blocking command in an enabled state.

Preferably, the method further includes: the information processing unit determines that the wavelength information of the current input ROADM does not have the wavelength information before the OTU is tuned, but has the wavelength information after the OTU is tuned, and further determines the The wavelength information of the original input ROADM does not have the same wavelength as the wavelength after the OTU is tuned, and then the wavelength of the input ROADM and the tuned wavelength does not conflict with the wavelength of the original input ROADM.

Preferably, the method further includes:

The power detecting unit detects that the port corresponding to the ROADM is changed from no light to light, determines that the new OTU accesses the ROADM, and sends the port number corresponding to the new OTU to the letter. The information processing unit transmits a wavelength scan command to the wavelength detecting unit according to the port number, and scans the wavelengths that are output after the coupling processing by the plurality of wavelengths.

Preferably, the method further includes: the information processing unit determines that new wavelength information is added to the wavelength information of the current input ROADM, and then determines that the wavelength of the new OTU input to the ROADM does not conflict with the wavelength of the original input ROADM.

Preferably, the method further comprises:

The power detecting unit detects that the port corresponding to the ROADM changes from light to no light, determines that the original OTU removes the ROADM, and sends the port number of the original OTU to remove the ROADM to the information processing unit;

The information processing unit sends an information update command to the information storage unit according to the port number; the information storage unit clears the port number of the original OTU removal ROADM and the original OTU wavelength information of the input ROADM according to the information update command. .

Preferably, the method further includes: in a state in which the blocking unit corresponding to the port of the original OTU removal ROADM is enabled and blocked, the information processing unit sends an unblocking command to the blocking unit, and The information that the original OTU removes the port of the ROADM from being unblocked is sent to the network management unit; and the blocking unit cancels the blocking state of the port of the original OTU to remove the ROADM according to the unblocking command.

Preferably, the method further includes: the information processing unit determines that the wavelength information of the current input ROADM is reduced by the wavelength information of the at least one OTU and adds new wavelength information, and then determines that at least one of the multiple wavelengths of the input ROADM One wavelength drifts and the wavelength at which the drift occurs does not conflict with the wavelength of the original input ROADM.

The present invention also provides an apparatus for determining a wavelength conflict in a ROADM of a reconfigurable add/drop multiplex system, the apparatus comprising at least: a wavelength detecting unit, an information processing unit, and an information storage unit;

The wavelength detecting unit is configured to obtain a wave of the current input ROADM by wavelength scanning Long information, and the wavelength information of the current input ROADM is sent to the information processing unit; the information processing unit is configured to query the information storage unit to obtain the wavelength information of the original input ROADM, and then the wavelength information of the current input ROADM Comparing with the wavelength information of the original input ROADM, determining whether the wavelength information of the current input ROADM conflicts with the wavelength information of the original input ROADM.

Preferably, the device further includes:

a network management unit, configured to send the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned to the information processing unit after receiving the wavelength tuning success message returned by the tuned OTU; the information processing unit to the wavelength detecting unit Sending a wavelength scan command to scan for wavelengths that are output after coupling processing of multiple wavelengths;

The power detecting unit is configured to detect that the port corresponding to the ROADM is changed from no light to light, determine that the new OTU accesses the ROADM, and send the port number corresponding to the new OTU to the information processing unit; And transmitting, according to the port number, a wavelength scan command to the wavelength detecting unit, and scanning for a wavelength that is output after the plurality of wavelengths are coupled and processed.

Preferably, the information processing unit is further configured to:

The query information storage unit obtains the wavelength information of the original input ROADM, determines the wavelength information of the original input ROADM, and has the wavelength information of the OTU before being tuned, and then the wavelength information of the current input ROADM and the original Entering the wavelength information of the ROADM for comparison, determining that the wavelength information of the current input ROADM does not have the wavelength information before the OTU is tuned, but having the wavelength information after the OTU is tuned, further determining the original input The wavelength information of the ROADM has the same wavelength as the wavelength after the OTU is tuned, and further determines that the optical power value of the wavelength information after the OTU is tuned is greater than the wavelength corresponding to the wavelength of the OTU to be tuned. The power value, and the difference between the two is not less than the preset optical power value, and then determines that the wavelength of the input ROADM and the tuned wavelength conflicts with the wavelength of the original input ROADM; The query information storage unit obtains the wavelength information of the original input ROADM, and compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines that the wavelength information of the current input ROADM is not added. The wavelength information, and further determining that the optical power value of the original OTU wavelength information in the wavelength information of the current input ROADM is greater than the optical power value of the original OTU wavelength information in the original input ROADM wavelength information, and The difference between the two is not less than the preset optical power value, and then it is determined that the wavelength of the new OTU of the input ROADM conflicts with the wavelength of the original input ROADM;

The query information storage unit obtains the wavelength information of the original input ROADM, and compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines that the wavelength information of the current input ROADM is reduced. The wavelength information of the at least one OTU does not increase the new wavelength information, and further determines that the optical power value of the wavelength information of the at least one OTU in the wavelength information of the current input ROADM is greater than the wavelength information of the original input ROADM. The optical power value of the wavelength information of the original at least one OTU, and the difference between the two is not less than the preset optical power value, and then determining that at least one of the multiple wavelengths of the input ROADM has drifted and drift occurs. The wavelength conflicts with the wavelength of the original input ROADM.

Preferably, the device further includes:

The alarm display unit displays a wavelength conflict alarm on the ROADM according to the alarm display command of the ROADM with a wavelength conflict sent by the information processing unit.

Preferably, the device further includes:

The blocking unit, in the enabled state, blocks the port of the ROADM according to a blocking command sent by the information processing unit.

Preferably, the information storage unit clears the port number of the original OTU removal ROADM and the wavelength information of the original OTU of the input ROADM according to the information update command sent by the information processing unit. In the present invention, an event or an operation for causing a wavelength conflict may be quickly located in the ROADM, and a wavelength conflict may be pre-determined before the event occurs. In the case of a wavelength conflict, the alarm may be indicated in time. Blocking the port corresponding to the input wavelength that causes the wavelength conflict effectively avoids the impact on the normal service of the transmission. DRAWINGS

1 is a schematic diagram of a main configuration structure of a ROADM based on a WSS technology in the prior art; FIG. 2 is a flow chart showing the steps of a method for determining a wavelength conflict in a ROADM of a reconfigurable add/drop multiplex system according to an embodiment of the present invention;

3A is a flow chart showing the processing of a pre-judgment of a method for determining a wavelength conflict in a ROADM according to an embodiment of the present invention;

FIG. 3B is a schematic diagram of a processing flow after the pre-judgment based on FIG. 3A; FIG.

FIG. 3C is a schematic diagram of a process flow after determining whether the wavelength information of the current input ROADM and the wavelength information of the original input ROADM are the same according to FIG. 3B;

4 is a schematic diagram of wavelength information of an input ROADM of the embodiment of the present invention, and the tuned wavelength does not conflict with the wavelength of the original input ROADM;

5 is a schematic diagram of wavelength information of an input ROADM of the embodiment of the present invention and having a wavelength that is tuned to conflict with a wavelength of an original input ROADM;

6A is a schematic diagram of a process flow for determining a wavelength conflict in a ROADM according to another embodiment of the present invention to determine that there is no conflict between a wavelength of a new OTU input to a ROADM and a wavelength of an original input ROADM;

6B is a schematic diagram of a process flow after determining that the new wavelength information is not added to the wavelength information of the current input ROADM based on FIG. 6A;

7 is a schematic diagram of wavelength information of a wavelength of a new OTU of an input ROADM that does not conflict with a wavelength of an original input ROADM according to an embodiment of the present invention;

8 is a diagram showing the wavelength and original input of a new OTU of an input ROADM according to an embodiment of the present invention; Schematic diagram of wavelength information of conflicting wavelengths of ROADMs;

FIG. 9A is a schematic diagram showing a process flow for determining a wavelength conflict in a ROADM according to another embodiment of the present invention, and determining that a wavelength at which a drift occurs does not conflict with a wavelength of an original input ROADM; FIG.

FIG. 9A is a schematic diagram of a process flow after determining whether the original wavelength information is reduced or the new wavelength information is added in the wavelength information of the current input ROADM;

FIG. 10 is a schematic diagram of wavelength information of a wavelength at which drift occurs does not conflict with a wavelength of an original input ROADM according to an embodiment of the present invention; FIG.

11 is a schematic diagram of wavelength information in which a drifting wavelength collides with a wavelength of an original input ROADM according to an embodiment of the present invention;

FIG. 12 is a schematic diagram showing the configuration of a wavelength input at a ROADM according to an embodiment of the present invention. detailed description

It should be understood that the embodiments described below are only a part of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the invention.

In order to solve the defects of the prior art, the technical solution of the embodiment of the present invention is directed to a ROADM, where at least an information processing unit, a wavelength detecting unit, an information storage unit, a power detecting unit, an alarm display unit, and a blocking unit are added at a wavelength input, which may The event or operation that causes the wavelength conflict to be quickly located in the ROADM can also be used to pre-determine whether there is a wavelength conflict before the event occurs. In the case of a wavelength conflict, the alarm can be used to indicate and block the wavelength. The port corresponding to the input wavelength of the collision effectively avoids the impact on the normal service of the transmission.

Referring to FIG. 2, an embodiment of a method for determining a wavelength conflict in a reconfigurable add/drop multiplex system ROADM is provided, including:

S10. The wavelength detecting unit obtains wavelength information of the current input ROADM by using wavelength scanning. And transmitting the wavelength information of the current input ROADM to the information processing unit;

S11. The information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM to determine whether the wavelength information of the current input ROADM is original. Input

The wavelength information of the ROADM conflicts.

Embodiments of the present invention provide a method for determining a wavelength conflict in a ROADM. The method in this embodiment is mainly directed to an application scenario in which the network management tuner OTU. The method of this embodiment includes:

5101: After receiving the wavelength tuning success message returned by the tuned OTU, the network management processing unit sends the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned to the information processing unit.

5102: The information processing unit sends a wavelength scan command to the wavelength detecting unit after receiving the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned.

S103: The wavelength detecting unit scans the wavelengths of the plurality of wavelengths after the coupling processing according to the wavelength scanning command, obtains the wavelength information of the current input ROADM, and returns the wavelength information currently input to the ROADM to the information processing unit.

S104: After receiving the wavelength information of the current input ROADM, the information processing unit obtains the wavelength information of the original input ROADM, determines that the wavelength information of the original input ROADM has the wavelength information before the OTU is tuned, and then scans The obtained wavelength information of the current input ROADM is compared with the wavelength information of the original input ROADM saved by the information storage unit, and it is determined that the wavelength information of the current input ROADM has no wavelength information before the OTU is tuned, but the wavelength after the OTU is tuned The information further determines that the wavelength information of the original input ROADM has the same wavelength as the wavelength after the OTU is tuned, and further determines that the optical power value of the wavelength information after the OTU is tuned is greater than the above-mentioned wavelength that is tuned by the OTU. The optical power value corresponding to the wavelength, and the difference between the two is not less than the preset optical power value, and then the wavelength of the input ROADM and the tuned wavelength is determined to conflict with the wavelength of the original input ROADM. Preferably, the method in this embodiment may further include:

After receiving the wavelength information of the current input ROADM, the information processing unit obtains the wavelength information of the original input ROADM, determines the wavelength information of the original input ROADM, and has the wavelength information before the OTU is tuned, and then obtains the scanned information. The wavelength information of the current input ROADM is compared with the wavelength information of the original input ROADM saved by the information storage unit, and it is determined that the wavelength information of the current input ROADM does not have the wavelength information before the OTU is tuned, but the wavelength information of the OTU is tuned. It is further determined that the wavelength information of the original input ROADM does not have the same wavelength as the wavelength after the OTU is tuned, and then the wavelength of the input ROADM and the tuned wavelength does not conflict with the wavelength of the original input ROADM.

Referring to FIG. 3A, FIG. 3B and FIG. 3C, another embodiment of the present invention provides a method for determining a wavelength conflict in a ROADM. This embodiment is mainly applicable to the application scenario of the network management tuning OTU. In this embodiment, the network management system has obtained the connection configuration relationship of the OTU to be tuned to the ROADM in advance. Therefore, before the network management sends the tuning command to the OTU, it is preferable to pre-determine whether there is a wavelength conflict. Referring first to FIG. 3A, the specific method of this embodiment includes:

S201: The network management unit sends a query command carrying the target tuning wavelength information to the information processing unit.

S202: The information processing unit queries whether the information storage unit saves the same wavelength as the target tuning wavelength according to the query command, and if yes, executes S203; if not, executes S205.

S203: The information processing unit determines that the target tuning wavelength conflicts with the wavelength of the original input ROADM, and then returns the information of the query result and the ROADM wavelength conflict to the network management unit.

S204: The network management unit terminates sending the wavelength tuning command to the OTU related to the target tuning wavelength information according to the information of the wavelength conflict of the ROADM.

S205: The information processing unit determines that the target tuning wavelength does not conflict with the wavelength of the original input ROADM, and returns information that the query result does not conflict with the wavelength of the ROADM to the network management. Processing unit.

S206: The network management processing unit sends a wavelength tuning command to the OTU related to the target tuning wavelength information.

S207: The OTU related to the target tuning wavelength information tunes the original wavelength to the destination wavelength according to the tuning wavelength command, and then returns a wavelength tuning success message to the network management unit.

At this point, the network management has completed the pre-judgment processing. However, in actual applications, the connection configuration relationship of the OTU access ROADM obtained by the network management may not match the actual connection configuration relationship, which may cause pre-judgment errors. Therefore, in the case where the pre-judgment determines that the target tuning wavelength does not conflict with the wavelength of the original input ROADM, for the tuned OTU, it is also necessary to determine whether there is a wavelength conflict in the ROADM to which it is connected. 3B and 3C, and further illustrated in conjunction with Figs. 4 and 5. 4 is a schematic diagram of wavelength information of a wavelength of an input ROADM in which an input ROADM of the embodiment of the present invention does not collide with a wavelength of an original input ROADM. The specific method of this embodiment includes:

S208: After receiving the wavelength tuning success message, the network management unit sends the wavelength information before the OTU is tuned (W1 as shown in FIG. 4 and FIG. 5) and the wavelength information after the OTU is tuned (as shown in FIG. 4 and FIG. 5). The indicated W2) is sent to the information processing unit.

It should be noted that the wavelength information W1 before the OTU is tuned includes the wavelength value and the optical power value before the OTU is tuned, and the wavelength information W2 after the OTU is tuned includes the wavelength value and the optical power value after the OTU is tuned.

S209: The information processing unit sends a wavelength scan command to the wavelength detecting unit after receiving the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned.

S210: The wavelength detecting unit scans the wavelengths of the plurality of wavelengths after the coupling processing according to the wavelength scanning command, obtains the wavelength information of the current input ROADM, and outputs the current information. The wavelength information of the incoming ROADM is returned to the information processing unit.

It should be noted that the wavelength information of the current input ROADM includes the wavelength value and optical power value of each wavelength of the current input ROADM.

S211: After receiving the wavelength information of the current input ROADM, the information processing unit obtains the wavelength information of the original input ROADM, and determines whether the wavelength information of the original input ROADM has the wavelength information before the OTU is tuned, and if so, Then, S213 is executed; if not, S212 is performed.

It should be noted that the wavelength information of the original input ROADM includes the wavelength values and optical power values of the respective wavelengths of the original input ROADM.

S212: The information processing unit determines that the tuned OTU does not access the ROADM and terminates the processing. S213: The information processing unit compares the wavelength information of the current input ROADM obtained by the scan with the wavelength information of the original input ROADM saved by the information storage unit, and determines whether the wavelength information of the two is the same. If yes, execute S214; if not, Execute S215.

S214: The information processing unit determines that the tuned OTU does not access the ROADM, or determines that the tuned OTU accesses the ROADM but fails to tune and terminates the processing.

S215: The information processing unit determines that the wavelength information of the current input ROADM does not have the wavelength information before the OTU is tuned (such as W1 shown in FIG. 4 and FIG. 5), but has the wavelength information after the OTU is tuned (as shown in FIG. 4 and FIG. (W2) shown in FIG. 5, and then further determining whether the wavelength information of the original input ROADM has the same wavelength as the wavelength after the OTU is tuned (such as W2 shown in FIG. 4 and FIG. 5), and if so, executing S219; Otherwise, execute S216.

S216: The information processing unit determines that the wavelength of the input ROADM and the tuned wavelength does not conflict with the wavelength of the original input ROADM (see FIG. 4).

Preferably, the method of this embodiment may further include after S216:

S217: The information processing unit sends an information update command to the information storage unit.

S218: The information storage unit records the tuned OTU access according to the information update command The port number of the ROADM and the wavelength information after the OTU is tuned.

S219: The information processing unit further determines, according to the determination result, that the optical power value of the wavelength information after the OTU is tuned is greater than the optical power value corresponding to the wavelength that is the same as the wavelength after the OTU is tuned, and the difference between the two The value is not less than the preset optical power value (W2 as shown in Figure 5), and then the wavelength of the input ROADM and the tuned wavelength is determined to conflict with the wavelength of the original input ROADM (see Figure 5).

It should be noted that the user may preset an optical power value as needed, if the optical power value of the tuned wavelength information of the OTU is equal to the optical power value corresponding to the wavelength of the OTU tuned wavelength. If the difference is not less than the preset optical power value, the information processing unit determines that the wavelength of the input ROADM and the tuned wavelength conflicts with the wavelength of the original input ROADM.

Preferably, the method in this embodiment may further include: after S219:

S220: The information processing unit sends an alarm display command for the wavelength conflict of the ROADM to the alarm display unit, and sends the information about the wavelength conflict of the ROADM to the network management unit.

S221: The alarm display unit displays a wavelength conflict alarm in the ROADM according to the alarm display command.

The alarm display unit can indicate the current ROADM wavelength conflict by means of the alarm indicator (for example: red light) or the way the LCD indicates (for example, display "1"). The above is only a specific example, and the present invention is not limited thereto.

Preferably, this embodiment may further include after S221:

S222: The information processing unit sends a blocking command to the blocking unit corresponding to the port of the tuned OTU accessing the ROADM, and sends the blocked port of the tuned OTU to the ROADM to the network management unit.

S223: If the blocking unit is enabled, the blocking unit blocks the tuned OTU from accessing the port of the ROADM according to the blocking command; if the blocking unit is not enabled, the blocking unit does not process. The embodiment of the present invention further provides a method for determining a wavelength conflict in the RO ADM. The method in this embodiment is mainly applicable to an application scenario in which the network management tuner OTU. In this embodiment, the network management does not obtain the connection configuration relationship of the OTU that needs to be tuned to access the ROADM in advance. Therefore, the network management cannot pre-determine whether there is a wavelength conflict. The specific method of this embodiment includes:

S301: The network management unit sends a wavelength tuning command to the OTU that needs to be tuned.

S302: The OTU that needs to be tuned tunes the original wavelength to the destination wavelength according to the tuning wavelength command, and then returns a wavelength tuning success message to the network management unit.

S303-S318 is the same as the foregoing S208-S223, and details are not described herein again.

Embodiments of the present invention also provide a method for determining a wavelength conflict in a ROADM. The method of this embodiment is mainly applied to the application scenario of the new OTU accessing the ROADM. The method of this embodiment includes:

S401: The power detecting unit detects that the port corresponding to the ROADM is changed from no light to light, determines that the new OTU accesses the ROADM, and sends the port number corresponding to the new OTU to the information processing unit.

S402: The information processing unit sends a wavelength scan command to the wavelength detecting unit according to the port number. S403: The wavelength detecting unit scans the wavelengths of the plurality of wavelengths after the coupling processing according to the wavelength scanning command, obtains the wavelength information of the current input ROADM, and returns the wavelength information currently input to the ROADM to the information processing unit.

S404: After receiving the wavelength information of the current input ROADM, the information processing unit obtains the wavelength information of the original input ROADM, and then scans the obtained wavelength information of the current input ROADM and the original input ROADM saved by the information storage unit. The wavelength information is compared, and it is determined that the wavelength information of the current input ROADM does not add new wavelength information, and further determines that the optical power value of the wavelength information of one OTU in the wavelength information of the current input ROADM is greater than the wavelength information of the original input ROADM. The optical power value of the wavelength information of an OTU, and the difference between the two is not less than the preset optical power value, and then determines the new OTU of the input ROADM The wavelength conflicts with the wavelength of the original input ROADM.

Preferably, the method in this embodiment may further include:

After receiving the wavelength information of the current input ROADM, the information processing unit obtains the wavelength information of the original input ROADM, and then scans the obtained wavelength information of the current input ROADM and the wavelength of the original input ROADM saved by the information storage unit. The information is compared, it is determined that new wavelength information is added to the wavelength information of the current input ROADM, and then it is determined that the wavelength of the new OTU input to the ROADM does not conflict with the wavelength of the original input ROADM.

Referring to Figures 6A and 6B, another embodiment of the present invention provides a method of determining wavelength collisions in a ROADM. The method in this embodiment is mainly directed to an application scenario in which a new OTU accesses a ROADM. 6A and 6B, further explained in conjunction with Figs. 7 and 8. 7 is a schematic diagram of wavelength information of a wavelength of a new OTU of an input ROADM that does not conflict with a wavelength of an original input ROADM according to an embodiment of the present invention, and FIG. 8 is a wavelength diagram of a new OTU of an input ROADM according to an embodiment of the present invention; A schematic diagram of conflicting wavelength information of the wavelength of the original input ROADM. The specific method of this embodiment includes:

S501: The power detecting unit detects that the port corresponding to the ROADM is changed from no light to light, determines that the new OTU accesses the ROADM, and sends the port number of the new OTU to the ROADM to the information processing unit.

S502: The information processing unit sends a wavelength scan command to the wavelength detecting unit according to the port number.

S503: The wavelength detecting unit scans the wavelengths of the plurality of wavelengths after the coupling processing according to the wavelength scanning command, obtains the wavelength information of the current input ROADM, and returns the wavelength information currently input to the ROADM to the information processing unit.

S504: After receiving the wavelength information of the current input ROADM, the information processing unit queries the query The information storage unit obtains the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM obtained by the scan with the wavelength information of the original input ROADM saved by the information storage unit, and determines whether the wavelength information of the current input ROADM is increased. The new wavelength information (the sixth wave as shown in FIGS. 7 and 8), if yes, executes S505; if not, executes S508.

S505: The information processing unit determines that the wavelength of the new OTU input to the ROADM does not conflict with the wavelength of the original input ROADM (see FIG. 7).

Preferably, the method of this embodiment may further include after S505:

S506: The information processing unit sends an information update command to the information storage unit.

S507: The information storage unit records the port number of the new OTU access ROADM and the wavelength information of the new OTU input to the ROADM according to the information update command.

It should be noted that the wavelength information of the new OTU input to the ROADM includes the wavelength value and optical power value of the new OTU input to the ROADM.

S508: The information processing unit further determines that the optical power value of the original OTU wavelength information in the wavelength information of the current input ROADM is greater than the optical power value of the original OTU wavelength information in the wavelength information of the original input ROADM, and then determines the two Whether the difference is not less than the preset optical power value (the fourth wave as shown in FIG. 8), and if so, executing S509; if not, executing S510.

S509: The information processing unit determines that the wavelength of the new OTU input to the ROADM conflicts with the wavelength of the original input ROADM (see FIG. 8).

S510: Terminate processing.

It should be noted that the user may preset an optical power value according to the requirement, if the optical power value of the original OTU wavelength information in the wavelength information of the current input ROADM and the original OTU in the wavelength information of the original input ROADM The difference between the optical power values of the wavelength information is not less than the preset optical power value, and the information processing unit determines that the wavelength of the new OTU of the input ROADM conflicts with the wavelength of the original input ROADM.

Preferably, the method of this embodiment may further include: after S509: S511: The information processing unit sends an alarm display command for the wavelength conflict of the ROADM to the alarm display unit, and sends the information about the wavelength conflict of the ROADM to the network management unit.

S512: The alarm display unit displays a wavelength conflict alarm on the ROADM according to the alarm display command.

Preferably, this embodiment may further include after S512:

S513: The information processing unit sends a blocking command to the blocking unit corresponding to the port of the new OTU accessing the ROADM, and sends the blocked information of the new OTU accessing the ROADM to the network management unit.

S514: If the blocking unit is enabled, the blocking unit blocks the new OTU from accessing the port of the ROADM according to the blocking command; if the blocking unit is not enabled, the blocking unit does not process.

Preferably, the embodiment may also remove the application scenario of the ROADM for the original OTU. The specific method of this embodiment further includes:

S601: The power detecting unit detects that the port corresponding to the ROADM is changed from light to no light, determines that the original OTU removes the ROADM, and sends the port number of the original OTU to remove the ROADM to the information processing unit.

S602: The information processing unit sends an information update command to the information storage unit according to the port number.

S603: The information storage unit clears the port number of the original OTU removal ROADM and the wavelength information of the original OTU input to the ROADM according to the information update command.

It should be noted that the wavelength information of the original OTU input to the ROADM includes the wavelength value and optical power value of the original OTU input to the ROADM.

Preferably, the embodiment may further include: after S603:

S604: If the original OTU removes the ROADM, the corresponding blocking unit is enabled and has been If the blocking is performed, the information processing unit sends an unblocking command to the blocking unit, and sends the information that the original OTU removal ROADM port is unblocked to the network management unit; the blocking unit cancels the original according to the unblocking command. The OTU removes the blocking status of the ROADM port. If the blocking unit corresponding to the port on which the original OTU removes the ROADM is not enabled and is not blocked, the blocking unit does not process.

Embodiments of the present invention also provide a method for determining a wavelength conflict in a ROADM. The method of this embodiment is mainly applied to an application scenario in which the wavelength of the input ROADM drifts. The drift of the wavelength is caused by the change of the wavelength of the OTU. For example, the OMU and the network management in the prior art cannot be known in advance, so it is impossible to determine whether the wavelength of the drift is different from the wavelength of the original input ROADM. There is a conflict. In the embodiment of the present invention, the current input ROADM wavelength information can be obtained by wavelength scanning, and then compared with the wavelength information of the original input ROADM, thereby determining that the drifting wavelength conflicts with the wavelength of the original input ROADM. . The method of this embodiment includes:

S701: The wavelength detecting unit scans the wavelengths of the plurality of wavelengths after the coupling processing, obtains the wavelength information of the current input ROADM, and returns the wavelength information of the current input ROADM to the information processing unit.

S702: After receiving the wavelength information of the current input ROADM, the information processing unit obtains the wavelength information of the original input ROADM, and then obtains the wavelength information of the current input ROADM obtained by the scan and the original input ROADM saved by the information storage unit. The wavelength information is compared, and it is determined that the wavelength information of the current input ROADM reduces the wavelength information of at least one OTU and the new wavelength information, and further determines the wavelength of at least one OTU in the wavelength information of the current input ROADM. The optical power value of the information is greater than the optical power value of the wavelength information of the original at least one OTU in the wavelength information of the original input ROADM, and the difference between the two is not less than the preset optical power value, and then the multiple wavelengths of the input ROADM are determined. At least one of the wavelengths has drifted, and the drifting wavelength and the wave of the original input ROADM There is a conflict.

Preferably, the method in this embodiment may further include:

After receiving the wavelength information of the current input ROADM, the information processing unit obtains the wavelength information of the original input ROADM, and then scans the obtained wavelength information of the current input ROADM and the wavelength of the original input ROADM saved by the information storage unit. The information is compared, and it is determined that the wavelength information of the current input ROADM is reduced by at least one OTU of the wavelength information but the new wavelength information is added, and then at least one of the multiple wavelengths of the input ROADM is determined to drift and drift occurs. The wavelength does not conflict with the wavelength of the original input ROADM.

Referring to Figures 9A and 9B, another embodiment of the present invention provides a method of determining wavelength collisions in a ROADM. The method in this embodiment is mainly directed to an application scenario in which the wavelength of the input ROADM drifts. Referring to Figures 9A and 9B, further details will be described in conjunction with Figures 10 and 11. 10 is a schematic diagram of wavelength information in which a drifting wavelength does not collide with a wavelength of an original input ROADM according to an embodiment of the present invention, and FIG. 11 illustrates that a drifting wavelength conflicts with a wavelength of an original input ROADM according to an embodiment of the present invention. Schematic diagram of wavelength information. The specific method of this embodiment includes:

S801: The wavelength detecting unit scans the wavelengths of the plurality of wavelengths after the coupling processing, obtains the wavelength information of the current input ROADM, and returns the wavelength information of the current input ROADM to the information processing unit.

The wavelength detecting unit may perform automatic scanning according to a preset time period (for example, every 10 minutes); or may perform scanning according to a wavelength scanning command sent by the information processing unit. The above is only a specific example, and the present invention does not limit this.

S802: After receiving the wavelength information of the current input ROADM, the information processing unit queries the query The information storage unit obtains the wavelength information of the original input ROADM, and compares the wavelength information of the current input ROADM obtained by the scanning with the wavelength information of the original input ROADM saved by the information storage unit, and determines whether the wavelength information of the current input ROADM is reduced. The wavelength information of at least one OTU (such as the sixth wave shown in FIGS. 10 and 11), if yes, execute S803; if not, execute S804.

S803: The information processing unit further determines whether new wavelength information is added (the eighth wave as shown in FIGS. 10 and 11), and if yes, executes S805; if not, executes S806.

S804: Terminate processing.

S805: The information processing unit determines that at least one of the plurality of wavelengths of the input ROADM has drifted, and the wavelength at which the drift occurs does not conflict with the wavelength of the original input ROADM (see FIG. 10).

Preferably, the method in this embodiment may further include: after S805:

S807: The information processing unit sends an information update command to the information storage unit.

S808: The information storage unit records the port number of the wavelength input ROADM and the wavelength information after the wavelength drifts according to the information update command.

It should be noted that the wavelength information after the wavelength drifts includes the wavelength value after the wavelength has drifted and the optical power value.

S806: The information processing unit further determines that the optical power value of the wavelength information of the at least one OTU in the wavelength information of the current input ROADM is greater than the optical power of the wavelength information of the original at least one OTU in the wavelength information of the original input ROADM. Value, and then judge whether the difference between the two is not less than the preset optical power value (the third wave as shown in FIG. 11), and if so, execute S809; if not, execute S810.

S809: The information processing unit determines that at least one of the plurality of wavelengths of the input ROADM has drifted, and the wavelength at which the drift occurs conflicts with the wavelength of the original input ROADM (see FIG. 11). S810: Terminate processing.

It should be noted that the user may preset an optical power value according to the requirement, if the optical power value of the original at least one OTU wavelength information in the wavelength information of the current input ROADM is in the wavelength information of the original input ROADM. The difference between the optical power values of the wavelength information of the at least one OTU is not less than the preset optical power value, and the information processing unit determines that at least one of the plurality of wavelengths of the input ROADM has drifted and drift occurs. The wavelength conflicts with the wavelength of the original input ROADM.

Preferably, the method of this embodiment may further include after S809:

S811: The information processing unit sends an alarm display command for the wavelength conflict of the ROADM to the alarm display unit, and sends the information of the wavelength conflict of the ROADM to the network management unit.

S812: The alarm display unit displays a wavelength conflict alarm on the ROADM according to the alarm display command.

Preferably, this embodiment may further include: after S812:

S813: The information processing unit sends a blocking command to the blocking unit corresponding to the drifting wavelength input port of the ROADM, and sends the information that the drifting wavelength input port of the ROADM is blocked to the network management unit.

S814: If the blocking unit is enabled, the blocking unit blocks the port of the ROADM according to the blocking command to block the wavelength of the drift; if the blocking unit is not enabled, the blocking unit does not process.

Referring to FIG. 12, an apparatus for determining a wavelength conflict in a reconfigurable add/drop multiplex system ROADM according to another embodiment of the present invention is provided. The apparatus includes at least: a wavelength detecting unit 1002, an information processing unit 1001, and an information storage unit. 1003;

The wavelength detecting unit 1002 is configured to obtain a wave of the current input ROADM by wavelength scanning. Long information, and the wavelength information of the current input ROADM is sent to the information processing unit 1001. The information processing unit 1001 is configured to query the information storage unit 1003 to obtain the wavelength information of the original input ROADM, and then the wavelength information of the current input ROADM is The wavelength information of the input ROADM is compared to determine whether the wavelength information of the current input ROADM conflicts with the wavelength information of the original input ROADM.

The information processing unit 1001, the wavelength detecting unit 1002, and the information storage unit 1003 constitute a device for determining a wavelength conflict in the ROADM. Preferably, the device further includes a power detecting unit 1004, an alarm display unit 1005, a blocking unit 1006, and a multiplexing unit. 1007. It should be noted that the network management unit 1009 in FIG. 12 is a new functional unit on the network management system for performing information interaction with the information processing unit 1001, thereby obtaining information about wavelength conflicts in the ROADM.

The device further includes: a network management unit 1009, configured to send the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned to the information after receiving the wavelength tuning success message returned by the tuned optical forwarding unit OTU Processing unit 1004; the information processing unit 1001 sends a wavelength scan command to the wavelength detecting unit 1002, and scans the wavelengths that are output after the coupling processing by the plurality of wavelengths; and/or,

The power detecting unit 1004 is configured to detect that the port of the corresponding access ROADM changes from no light to light, determine that the new optical forwarding unit OTU accesses the ROADM, and send the port number corresponding to the new OTU to the information processing unit. 1001. The information processing unit 1001 transmits a wavelength scan command to the wavelength detecting unit 1002 according to the port number, and scans the wavelengths that are output after the coupling processing by the plurality of wavelengths.

The information processing unit 1001 is further configured to: the query information storage unit 1003 obtains the wavelength information of the original input ROADM, determines the wavelength information of the original input ROADM, and has the wavelength information of the current input ROADM, and then inputs the wavelength information of the current input ROADM. Compared with the wavelength information of the original input ROADM, it is determined that the wavelength information of the current input ROADM is not There is wavelength information before the OTU is tuned, but there is wavelength information after the OTU is tuned, and it is further determined that the wavelength information of the original input ROADM has the same wavelength as the wavelength after the OTU is tuned, and further determines that the OTU is tuned. The optical power value of the wavelength information is greater than the optical power value corresponding to the same wavelength as the OTU tuned wavelength, and the difference between the two is not less than the preset optical power value, and then the wavelength of the input ROADM and the tuned wavelength is determined. There is a conflict between the wavelengths of the input ROADM;

The query information storage unit 1003 obtains the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines that the new wavelength information is not added to the wavelength information of the current input ROADM, and further The optical power value of the original OTU wavelength information in the wavelength information of the input ROADM is greater than the optical power value of the original OTU wavelength information in the wavelength information of the original input ROADM, and the difference between the two is not less than the preset optical power value. And then determining that the wavelength of the new OTU of the input ROADM conflicts with the wavelength of the original input ROADM;

The query information storage unit 1003 obtains the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines that the wavelength information of the current input ROADM is reduced by at least one OTU. The wavelength information of the at least one OTU in the wavelength information of the current input ROADM is greater than the wavelength information of the at least one OTU in the wavelength information of the original input ROADM. The optical power value, and the difference between the two is not less than the preset optical power value, and then it is determined that at least one of the plurality of wavelengths of the input ROADM has drifted, and the drifting wavelength conflicts with the wavelength of the original input ROADM .

The device further includes: an alarm display unit 1005, displaying a wavelength conflict alarm in the ROADM according to the alarm display command of the wavelength conflict of the ROADM sent by the information processing unit 1001.

The above apparatus further includes: a blocking unit 1006, in the enabled state, blocking the port of the tuned OTU from accessing the ROADM according to the blocking command sent by the information processing unit 1001. The information storage unit 1003 clears the port number of the original OTU removal ROADM and the wavelength information of the original OTU of the input ROADM according to the information update command sent by the information processing unit 1001.

According to the foregoing descriptions S101-S104, S201-S223 and S301-S318, correspondingly, based on the configuration structure at the wavelength input of the ROADM shown in FIG. 12, the embodiment of the present invention provides a wavelength conflict in the ROADM. The device of this embodiment is mainly for the application scenario of the network management tuning OTU. The apparatus of this embodiment at least includes: an information processing unit 1001, a wavelength detecting unit 1002, and an information storage unit 1003;

The information processing unit 1001 is configured to receive the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned after the network management unit 1009 receives the wavelength tuning success message returned by the tuned OTU, and then send the wavelength information to the wavelength detecting unit. 1002 sends a wavelength scan command;

The wavelength detecting unit 1002 is configured to scan the wavelengths of the plurality of wavelengths after the coupling processing according to the wavelength scanning command, obtain the wavelength information of the current input ROADM, and return the wavelength information of the current input ROADM to the information processing unit 1001;

The information storage unit 1003 is configured to save the wavelength information of the original input ROADM. The information processing unit 1001 is further configured to: after receiving the wavelength information of the current input ROADM, the query information storage unit 1003 obtains the wavelength information of the original input ROADM, and determines The wavelength information of the original input ROADM includes the wavelength information before the OTU is tuned, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines that no OTU is tuned in the wavelength information of the current input ROADM. The wavelength information, but with the wavelength information of the OTU being tuned, further determines that the wavelength information of the original input ROADM has the same wavelength as the wavelength after the OTU is tuned, and further determines the optical power of the wavelength information after the OTU is tuned. The value is greater than the optical power value corresponding to the wavelength of the same wavelength as the OTU is tuned, and the difference between the two is not less than the preset optical power value, and then the wavelength of the input ROADM and the tuned wavelength is determined with the original input ROADM. There is a conflict in wavelength. Preferably, the information processing unit 1001 is further configured to: after receiving the wavelength information of the current input ROADM, the query information storage unit 1003 obtains the wavelength information of the original input ROADM, and determines that the OTU of the original input ROADM is tuned before being tuned. The wavelength information is then compared with the wavelength information of the current input ROADM to determine the wavelength information of the current input ROADM without the OTU being tuned, but the OTU is tuned. Further, it is determined that the wavelength information of the original input ROADM does not have the same wavelength as the wavelength after the OTU is tuned, and then the wavelength of the input ROADM and the tuned wavelength does not conflict with the wavelength of the original input ROADM.

Preferably, the information processing unit 1001 is further configured to: after determining that the input ROADM and the tuned wavelength does not conflict with the wavelength of the original input ROADM, send an information update command to the information storage unit 1003; the information storage unit 1003 is further used According to the information update command, the port number of the tuned OTU access ROADM and the wavelength information after the OTU is tuned are recorded.

Preferably, the apparatus of the embodiment further includes an alarm display unit 1005, specifically: the information processing unit 1001, further configured to send an alarm display command of the ROADM with a wavelength conflict to the alarm display unit 1005, and send information about the wavelength conflict of the ROADM. The network management unit 1009; the alarm display unit 1005 is configured to display a wavelength conflict alarm in the ROADM according to the alarm display command.

Preferably, the apparatus of this embodiment further includes a blocking unit 1006, specifically: the information processing unit 1001, further configured to send a blocking command to the blocking unit 1006 corresponding to the port of the tuned OTU accessing the ROADM, and The blocked OTU access ROADM port blocked information is sent to the network management unit 1009; the blocking unit 1006 is configured to block the tuned OTU from accessing the ROADM port according to the blocking command in the enabled state. . The blocking unit may be constituted by an optical device such as an optical switch or an adjustable attenuator, which is only a specific example, and the present invention does not limit this.

Preferably, the apparatus of this embodiment further includes a multiplexer unit 1007, which may be a ΙχΝ coupler. The wavelengths of the plurality of input ROADMs are coupled and output to the wavelength detecting unit 1002.

The information exchange, the execution process, and the like between the units in the foregoing device are based on the same concept as the method embodiment of the present invention. For details, refer to the descriptions of S101-S104, S201-S223, and S301-S318 in the method embodiment of the present invention. , will not repeat them here.

According to the foregoing descriptions S401-S404, S501-S514, and S601-S604, correspondingly, based on the configuration structure at the wavelength input of the ROADM shown in FIG. 12, the embodiment of the present invention further provides a wavelength determination in the ROADM. The device of the present embodiment is directed to the application scenario of the new OTU accessing the ROADM. The apparatus of this embodiment at least includes: an information processing unit 1001, a wavelength detecting unit 1002, an information storage unit 1003, and a power detecting unit 1004;

The power detecting unit 1004 is configured to detect that the port corresponding to the ROADM is changed from no light to light, determine that the new OTU accesses the ROADM, and send the port number corresponding to the new OTU to the information processing unit 1001;

The information processing unit 1001 is configured to send a wavelength scan command to the wavelength detecting unit 1002 according to the port number;

The information storage unit 1003 is configured to save the wavelength information of the original input ROADM. The information processing unit 1001 is further configured to: after receiving the wavelength information of the current input ROADM, the query information storage unit 1003 obtains the wavelength information of the original input ROADM, and then Comparing the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, determining that the new wavelength information is not added to the wavelength information of the current input ROADM, and further determining the wavelength information of the original one OTU in the wavelength information of the current input ROADM Optical power value is greater than the original Entering the optical power value of the original OTU wavelength information in the wavelength information of the ROADM, and the difference between the two is not less than the preset optical power value, and then determining the wavelength of the new OTU input to the ROADM and the wavelength of the original input ROADM conflict.

Preferably, the information processing unit 1001 is further configured to: after receiving the wavelength information of the current input ROADM, the query information storage unit 1003 obtains the wavelength information of the original input ROADM, and then the wavelength information of the current input ROADM and the original input ROADM The wavelength information is compared, and it is determined that new wavelength information is added to the wavelength information of the current input ROADM, and then it is determined that the wavelength of the new OTU of the input ROADM does not conflict with the wavelength of the original input ROADM.

Preferably, the information processing unit 1001 is further configured to: after determining that the wavelength of the new OTU of the input ROADM does not conflict with the wavelength of the original input ROADM, send an information update command to the information storage unit 1003; the information storage unit 1003 is further used. According to the information update command, the port number of the new OTU access ROADM and the wavelength information of the new OTU input to the ROADM are recorded.

Preferably, the apparatus of this embodiment further includes a blocking unit 1006, specifically: the information processing unit 1001, further configured to send a blocking command to the blocking unit 1006 corresponding to the port of the new OTU access ROADM, and The blocking information of the port of the OTU accessing the ROADM is sent to the network management unit 1009. The blocking unit 1006 is configured to block the port of the new OTU from accessing the ROADM according to the blocking command in the enabled state. The blocking unit may be constituted by an optical device such as an optical switch or an adjustable attenuator, which is only a specific example, and the present invention is not limited thereto.

Preferably, the apparatus of this embodiment further includes a multiplexer unit 1007, which may be a ΙχΝ coupler, configured to couple the wavelengths of the plurality of input ROADMs and output the signals to the wavelength detecting unit. 1002.

Preferably, the device in this embodiment can also remove the application scenario of the ROADM for the original OTU, specifically: the power detecting unit 1004 is further configured to detect that the port corresponding to the access ROADM changes from light to no light. Determining the original OTU to remove the ROADM, and sending the port number of the original OTU to the ROADM to the information processing unit 1001; the information processing unit 1001 is further configured to send an information update command to the information storage unit according to the port number; the information storage unit 1003 is further configured to: according to the information update command, clear the port number of the original OTU to remove the ROADM and the wavelength information of the original OTU of the input ROADM.

The content of the information exchange, the execution process, and the like between the units in the foregoing device are based on the same concept as the method embodiment of the present invention. For details, refer to the descriptions of S401-S404, S501-S514, and S601-S604 in the method embodiment of the present invention. , will not repeat them here.

According to the foregoing descriptions of S701-S702 and S801-S814, and correspondingly, based on the configuration structure at the wavelength input of the ROADM shown in FIG. 12, the embodiment of the present invention further provides a device for determining a wavelength conflict in the ROADM. The device in this embodiment is mainly applied to an application scenario in which the wavelength of the input ROADM drifts. The apparatus of this embodiment includes at least: an information processing unit 1001, a wavelength detecting unit 1002, and an information storage unit 1003;

The wavelength detecting unit 1002 is configured to scan the wavelengths of the plurality of wavelengths after the coupling processing, obtain the wavelength information of the current input ROADM, and return the wavelength information of the current input ROADM to the information processing unit 1001;

The information storage unit 1003 is configured to save the wavelength information of the original input ROADM. The information processing unit 1001 is configured to: after receiving the wavelength information of the current input ROADM, the query information storage unit 1003 obtains the wavelength information of the original input ROADM, and then The wavelength information of the current input ROADM is compared with the wavelength information of the original input ROADM, and it is determined that the wavelength information of the current input ROADM reduces the original wavelength information of at least one OTU and does not add new wavelength information, and further determines the current input. The original information of the ROADM wavelength information The optical power value of the wavelength information of one less OTU is greater than the optical power value of the wavelength information of the original at least one OTU in the wavelength information of the original input ROADM, and the difference between the two is not less than the preset optical power value, and then the input is determined. At least one of the plurality of wavelengths of the ROADM drifts, and the wavelength at which the drift occurs conflicts with the wavelength of the original input ROADM.

Preferably, the information processing unit 1001 is further configured to: after receiving the wavelength information of the current input ROADM, the query information storage unit 1003 obtains the wavelength information of the original input ROADM, and then the wavelength information of the current input ROADM and the original input ROADM The wavelength information is compared, and it is determined that the wavelength information of the current input ROADM is reduced by the original wavelength information of at least one OTU but the new wavelength information is added, and then at least one of the multiple wavelengths of the input ROADM is determined to have drifted, and occurs. The wavelength of the drift does not conflict with the wavelength of the original input ROADM.

Preferably, the information processing unit 1001 is further configured to: after determining that the wavelength at which the drift occurs does not conflict with the wavelength of the original input ROADM, send an information update command to the information storage unit 1003; the information storage unit 1003 is further configured to update according to the information. Command to record the wavelength of the drift input wavelength input ROADM and the wavelength information after the wavelength has drifted.

Preferably, the apparatus of this embodiment further includes a blocking unit 1006, specifically: the information processing unit 1001 is further configured to send a blocking command to the blocking unit 1006 corresponding to the port of the wavelength input ROADM where the drift occurs, and will occur The information of the drifted wavelength input ROADM port is sent to the network management unit 1009. The blocking unit 1006 is configured to block the wavelength of the drift input into the ROADM port according to the blocking command in the enabled state. Blocking unit 1006 can be An optical device such as an optical switch or an adjustable attenuator is configured as a specific example, and the present invention is not limited thereto.

Preferably, the apparatus of this embodiment further includes a multiplexer unit 1007, which may be a ΙχΝ coupler for coupling the wavelengths of the plurality of input ROADMs and outputting to the wavelength detecting unit 1002.

The information exchange, the execution process, and the like between the modules in the foregoing device are based on the same concept as the method embodiment of the present invention. For details, refer to the descriptions of S701-S702 and S801-S814 in the method embodiment of the present invention. Let me repeat.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course, all can be implemented by hardware, but in many cases, the former is better. Implementation. Based on such understanding, all or part of the technical solution of the present invention contributing to the background art may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like. A method comprising a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform portions of various embodiments or embodiments of the invention.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

Claim

A method for determining a wavelength conflict in a reconfigurable add/drop multiplex system (ROADM), the method comprising:

The method according to claim 1, wherein the information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then the wavelength information of the current input ROADM and the original input ROADM. The wavelength information is compared to determine whether the wavelength information of the current input ROADM conflicts with the wavelength information of the original input ROADM.

3. The method according to claim 1, wherein the information processing unit queries The information storage unit obtains the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM to determine whether the wavelength information of the current input ROADM is different from the wavelength of the original input ROADM. The steps of information conflict are as follows:

The information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines the wavelength information of the current input ROADM. And not increasing the new wavelength information, and further determining that the optical power value of the original OTU wavelength information in the wavelength information of the current input ROADM is greater than the optical power of the original OTU wavelength information in the original input ROADM wavelength information. Value, and the difference between the two is not less than the preset optical power value, and then determine the wavelength of the new OTU input to the ROADM and the wavelength of the original input ROADM

The information processing unit queries the information storage unit to obtain the wavelength information of the original input ROADM, and then compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines the wavelength information of the current input ROADM. The optical power value of the at least one OTU of the wavelength information of the current input ROADM is greater than the original input ROADM. The optical power value of the wavelength information of the original at least one OTU in the wavelength information, and the difference between the two is not less than the preset optical power value, and then determining that at least one of the plurality of wavelengths of the input ROADM has drifted, and Drift wavelength and original input There is a conflict in the wavelength of the ROADM.

The method according to claim 2, wherein the method further comprises: after receiving the wavelength tuning success message returned by the tuned OTU, the network management unit adds the wavelength information and the OTU before the OTU is tuned. The tuned wavelength information is sent to the information processing unit; the information processing unit sends a wavelength scan command to the wavelength detecting unit, and scans the wavelengths that are output after the coupling processing by the plurality of wavelengths.

The method according to claim 2, wherein before the network management unit receives the wavelength tuning success message, the method further includes:

The network management processing unit sends a wavelength tuning command to the OTU associated with the destination tuning wavelength information according to the query result;

The method according to any one of claims 2 to 4, wherein after determining that there is a conflict in the wavelength, the method further comprises:

The information processing unit sends an alarm display command for the wavelength conflict of the ROADM to the alarm display unit, and sends the information of the wavelength conflict of the ROADM to the network management unit; The alarm display unit displays a wavelength conflict alarm in the ROADM according to the alarm display command.

The method according to claim 8, wherein the method further comprises: the information processing unit sending a blocking command to the blocking unit corresponding to the port of the ROADM, and blocking the port of the ROADM The information is sent to the network management unit;

The method according to claim 2, wherein the method further comprises: the information processing unit determining that the wavelength information of the current input ROADM does not have the wavelength information before the OTU is tuned, but the OTU is The tuned wavelength information further determines that the wavelength information of the original input ROADM does not have the same wavelength as the OTU tuned wavelength, and then determines that the wavelength of the input ROADM is tuned and the wavelength of the original input ROADM is not There is a conflict.

The method according to claim 3, wherein the method further comprises: the power detecting unit detects that the port of the corresponding access ROADM changes from no light to light, and determines that the new OTU accesses the ROADM. And sending the port number corresponding to the new OTU to the information processing unit; the information processing unit sends a wavelength scan command to the wavelength detecting unit according to the port number, and scans the wavelengths that are output after the coupling processing by the plurality of wavelengths.

The method according to claim 3, further comprising: the information processing unit determining that new wavelength information is added to the wavelength information of the current input ROADM, and then determining the wavelength of the new OTU input to the ROADM There is no conflict with the wavelength of the original input ROADM.

The method according to claim 3 or 11 or 12, wherein the method further comprises:

The power detection unit detects that the port corresponding to the ROADM is changed from light to no light, determines the original OTU to remove the ROADM, and removes the port number of the original OTU from the ROADM. Send to the information processing unit;

The method according to claim 13, wherein the method further comprises: the information processing unit is in the state that the blocking unit corresponding to the port of the original OTU removal ROADM is enabled and blocked The blocking unit sends the unblocking command, and the information that the original OTU removes the ROADM port is unblocked and sent to the network management unit; the blocking unit cancels the original OTU removal according to the unblocking command. The blocking status of the ROADM port.

The method of claim 4, wherein the method further comprises: the information processing unit determining that the wavelength information of the current input ROADM is reduced by at least one OTU and adding new wavelength information Then, it is determined that at least one of the plurality of wavelengths of the input ROADM has drifted, and the wavelength at which the drift occurs does not conflict with the wavelength of the original input ROADM.

16. A device for determining a wavelength conflict in a ROADM of a reconfigurable add/drop multiplex system, characterized in that the device comprises at least: a wavelength detecting unit, an information processing unit, and an information storage unit;

The wavelength detecting unit is configured to obtain wavelength information of the current input ROADM by using wavelength scanning, and send the wavelength information of the current input ROADM to the information processing unit; the information processing unit is configured to query the information storage unit to obtain the original The wavelength information of the input ROADM is compared with the wavelength information of the original input ROADM to determine whether the wavelength information of the current input ROADM conflicts with the wavelength information of the original input ROADM.

The device according to claim 16, wherein the device further comprises: a network management unit, configured to: after receiving the wavelength tuning success message returned by the tuned OTU, Transmitting the wavelength information before the OTU is tuned and the wavelength information after the OTU is tuned to the information processing unit; the information processing unit sends a wavelength scan command to the wavelength detecting unit, and scans the wavelengths that are output after the coupling processing by the plurality of wavelengths;

The power detecting unit is configured to detect that the port corresponding to the ROADM is changed from no light to light, determine that the new OTU accesses the RO ADM, and send the port number corresponding to the new OTU to the information processing unit; The unit transmits a wavelength scan command to the wavelength detecting unit according to the port number, and scans the wavelengths that are output after the coupling processing by the plurality of wavelengths.

The device according to claim 16 or 17, wherein the information processing unit is further configured to:

The query information storage unit obtains the wavelength information of the original input ROADM, determines the wavelength information of the original input ROADM, and has the wavelength information of the OTU before being tuned, and then the wavelength information of the current input ROADM and the original Entering the wavelength information of the ROADM for comparison, determining that the wavelength information of the current input ROADM does not have the wavelength information before the OTU is tuned, but having the wavelength information after the OTU is tuned, further determining the original input The wavelength information of the ROADM has the same wavelength as the wavelength after the OTU is tuned, and further determines that the optical power value of the wavelength information after the OTU is tuned is greater than the wavelength corresponding to the wavelength of the OTU to be tuned. The power value, and the difference between the two is not less than the preset optical power value, and then determines that the wavelength of the input ROADM and the tuned wavelength conflicts with the wavelength of the original input ROADM;

The query information storage unit obtains the wavelength information of the original input ROADM, and compares the wavelength information of the current input ROADM with the wavelength information of the original input ROADM, and determines that the wavelength information of the current input ROADM is not added. The wavelength information, and further determining that the optical power value of the original OTU wavelength information in the wavelength information of the current input ROADM is greater than the optical power value of the original OTU wavelength information in the original input ROADM wavelength information, and The difference between the two is not less than the preset optical power value, and then the input is determined. The wavelength of the new OTU of the ROADM conflicts with the wavelength of the original input ROADM; the query information storage unit obtains the wavelength information of the original input ROADM, and then the wavelength information of the current input ROADM and the wavelength information of the original input ROADM Comparing, determining that the wavelength information of the current input ROADM reduces the wavelength information of the original at least one OTU or the new wavelength information, and further determines that at least one OTU of the wavelength information of the current input ROADM The optical power value of the wavelength information is greater than the optical power value of the wavelength information of the original at least one OTU in the wavelength information of the original input ROADM, and the difference between the two is not less than the preset optical power value, and then the input ROADM is determined. At least one of the plurality of wavelengths drifts, and the wavelength at which the drift occurs conflicts with the wavelength of the original input ROADM.

The device according to claim 18, wherein the device further comprises: an alarm display unit, configured to display a wavelength conflict alarm in the ROADM according to an alarm display command of the ROADM having a wavelength conflict sent by the information processing unit.

The device according to claim 18, wherein the device further comprises: a blocking unit, in an enabled state, blocking a port of the ROADM according to a blocking command sent by the information processing unit .

The device according to claim 18, wherein the information storage unit clears the port number of the original OTU removal ROADM and the original input ROADM according to the information update command sent by the information processing unit. OTU wavelength information.