CN115913383A

CN115913383A - Optical multiplexing section power adjusting method, system and network equipment

Info

Publication number: CN115913383A
Application number: CN202110898073.7A
Authority: CN
Inventors: 肖述超; 张明超; 李晓建; 张成兴; 方瑜; 贾殷秋
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2023-04-04
Also published as: WO2023011040A1

Abstract

The application provides a method, a system and network equipment for adjusting power of an optical multiplexing section, and relates to the field of optical network transmission. The method for adjusting the power of the optical multiplexing section comprises the following steps: acquiring power parameters of the OTS, wherein the power parameters comprise upstream output power, downstream input power and OTS actual gain values; acquiring OTS power difference information according to the upstream output power, the downstream input power and the OTS actual gain value; when the power difference information meets a preset starting regulation condition, acquiring power regulation information of the OTS according to power parameters of the OTS; and sending the power regulation information to the OTS node corresponding to the OTS so as to regulate the power on the OTS node corresponding to the OTS according to the power regulation information. When the first node has service transmission, the power parameters of each OTS can be quickly acquired and responded, and the starting of power adjustment and the calculation of the power adjustment amount are completed by the first node, so that the technical problem of low power adjustment efficiency of an optical multiplexing section in the prior art is solved.

Description

Optical multiplexing section power adjusting method, system and network equipment

Technical Field

The embodiment of the application relates to the field of optical transmission network communication, in particular to a method, a system and network equipment for adjusting power of an optical multiplexing section.

Background

A basic Wavelength Division Multiplexing (WDM) transmission system is composed of an Optical converter (OTU), an Optical Multiplexer Unit (OMU), an Optical Amplifier (OA), a line Optical fiber, and an Optical Demultiplexer Unit (ODU). The input from the output of the OMU to the ODU is an Optical Multiplex Section (OMS), and the input from the output of the former OA to the latter OA is an Optical Transmission Section (OTS for short). In the practical operation of the wavelength division multiplexing transmission system, optical multiplexing sections are connected by adopting optical fiber lines, but the loss of the optical fiber lines can be changed due to the influence of factors such as temperature, construction and the like, effective measures are required to be taken to compensate the change of the loss of the optical fiber lines, so that the gain is matched with the loss, and the optical power is maintained at a reference value. In order to perform automatic online adjustment on the power loss of the WDM system, the power of the WDM system may be managed centrally on a network management system and distributively on a device side, so as to ensure that the optical power of the optical multiplexing section OMS of the system is maintained in an optimal state.

However, when the network management system is used for centralized management of the power of the WDM system, the network management system adopts a periodic query mechanism, which has strict requirements on query intervals, and if the query intervals are too short, a large amount of resources of the network management system are occupied, which causes a network management system to crash, and if the query intervals are too large, the WDM system cannot respond to the power quickly, which causes a delay in power adjustment; when the device side is adopted to perform distributed management on the power of the WDM system, because whether the adjustment is performed and the adjustment amount are calculated by each network element node in the device, a large amount of message interaction is required among the network element nodes, so that the communication bandwidth and the CPU processing time of the network element nodes are excessively occupied, the communication among the network elements is blocked, and the power adjustment efficiency is low.

Disclosure of Invention

The present disclosure provides a method, a system, and a network device for adjusting a power of an optical multiplexing section, which can implement power adjustment control of the optical multiplexing section at a first node of the optical multiplexing section, so that the power adjustment control of the optical multiplexing section can be performed more efficiently.

In order to achieve the above object, an embodiment of the present application provides a method for adjusting a power of an optical multiplexing section, which is applied to a head node of the optical multiplexing section, where the optical multiplexing section at least includes an optical transmission section OTS, and the OTS includes an OTS node, and the method includes: acquiring power parameters of the OTS, wherein the power parameters comprise upstream output power, downstream input power and OTS actual gain values; acquiring power difference information of the OTS according to the upstream output power, the downstream input power and the OTS actual gain value; when the power difference information meets a preset starting regulation condition, acquiring power regulation information of the OTS according to the power parameter of the OTS; and sending the power regulation information to the OTS node corresponding to the OTS so as to regulate the power of the OTS node corresponding to the OTS according to the power regulation information.

In order to achieve the above object, an embodiment of the present application further provides an optical multiplexing section power adjustment system, which is applied to a head node of an optical multiplexing section, where the optical multiplexing section at least includes an optical transmission section OTS, and the OTS includes an OTS node, where the apparatus includes:

a first obtaining module, configured to obtain a power parameter of the OTS, where the power parameter includes an upstream output power, a downstream input power, and an OTS actual gain value;

a second obtaining module, configured to obtain power difference information of the OTS according to the upstream output power, the downstream input power, and the OTS actual gain value;

a third obtaining module, configured to obtain power adjustment information of the OTS according to the power parameter of the OTS when the power difference information meets a preset start adjustment condition;

and the sending module is used for sending the power regulation information to the OTS node corresponding to the OTS so that the OTS node corresponding to the OTS can regulate power according to the power regulation information.

In order to achieve the above object, an embodiment of the present application further provides a network device, where the network device includes:

at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform any one of the above-described optical multiplexing section power adjustment methods.

According to the method, the system and the network equipment for adjusting the power of the optical multiplexing section, in the process of adjusting the power of the optical multiplexing section, the power parameter of the OTS of the optical transmission section is obtained through the first node of the optical multiplexing section, wherein the power parameter comprises upstream output power, downstream input power and the actual gain value of the OTS; acquiring OTS power difference information according to the upstream output power, the downstream input power and the OTS actual gain value; when the power difference information meets the preset starting regulation condition, acquiring the power regulation information of the OTS according to the power parameter of the OTS; sending the power regulation information to an OTS node corresponding to the OTS so as to regulate the power of the OTS node corresponding to the OTS according to the power regulation information; the method and the device can rapidly acquire and respond to the power parameters of all OTS when the first node has service transmission, and the starting of power adjustment and the calculation of the power adjustment amount are completed by the first node, so that the technical problems of slow power parameter response of an optical transmission section and low power adjustment efficiency of the optical transmission section caused by an optical multiplexing section power adjustment method in the prior art are solved.

Drawings

One or more embodiments are illustrated by the figures in the accompanying drawings, which correspond to and are not intended to limit the embodiments.

Fig. 1 is a schematic structural diagram of an optical multiplexing section of a wavelength division multiplexing transmission system according to an embodiment of the present application;

fig. 2 is a flowchart of a method for adjusting power of an optical multiplexing section according to an embodiment of the present application;

fig. 3A is a flowchart of a method for adjusting power of an optical multiplexing section, which describes different manners of obtaining power parameters of an OTS according to an embodiment of the present application;

fig. 3B is an interaction flowchart of obtaining a power parameter in a serial manner according to an embodiment of the present application;

fig. 3C is an interaction flowchart of obtaining a power parameter in a parallel manner according to the embodiment of the present application;

fig. 4A is a flowchart of a method for adjusting power of an optical multiplexing section in an opening scenario according to an embodiment of the present application;

FIG. 4B is a flow diagram of an adjustment action execution specific to the implementation of step 406 in FIG. 4A;

fig. 5 is a flowchart of a method for adjusting power of an optical multiplexing section in an operation and maintenance scenario according to an embodiment of the present application;

fig. 6 is a flowchart of step 404 in the method for adjusting power of an optical multiplexing section according to the embodiment of the present application shown in fig. 4;

fig. 7 is a flowchart of step 505 in the method for adjusting power of an optical multiplexing section according to the embodiment of the present application shown in fig. 5;

FIG. 8 is a flowchart of a method for adjusting power of an optical multiplexing section capable of cyclic adjustment according to an embodiment of the present application

Fig. 9 is a schematic structural diagram of a power regulation system of an optical multiplexing section according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in the examples of the present application, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present application, and the embodiments may be mutually incorporated and referred to without contradiction.

Usually, during the debugging of the wavelength division multiplexing transmission system, a suitable Variable Optical Attenuator (VOA for short) can be added between the OMU and the OA in the Optical multiplexing section, so that the starting end of the system outputs normal Optical power, that is, the reference power for the OMS power optimization in the Optical multiplexing section; as shown in fig. 1, an Optical multiplexing section of a wavelength division multiplexing transmission system may include an Optical switching unit OTU, an Optical multiplexing unit OMU, an Optical amplifier OA, a Variable Optical Attenuator (VOA for short) and an Optical demultiplexing unit ODU, in the drawing, NE1 identifies a first node of the Optical multiplexing section, NE2 represents an OTS node of a first Optical transmission section OTS, and NE3 represents an OTS node of a second Optical transmission section OTS.

An embodiment of the present application relates to a method for adjusting power of an optical multiplexing section, which is applied to a head node of the optical multiplexing section, where the optical multiplexing section at least includes an optical transmission section OTS, and the OTS includes an OTS node, and as shown in fig. 2, the method specifically includes:

step 201, acquiring power parameters of the OTS, wherein the power parameters include an upstream output power, a downstream input power, and an OTS actual gain value.

The optical multiplexing section shown in fig. 1 includes two optical transmission sections, OTS1 and OTS 2. Wherein the power parameter of each OTS is sourced from the upstream node and the downstream node. Such as shown in fig. 1. The power parameter of OTS1 is derived from NE1, NE2. The power parameters of OTS2 are derived from NE2, NE3. For node NE2, both the power parameters of OTS1 and OTS2 are included. When head node NE1 requests power parameters from NE2, NE2 will return the power parameters of both parts. That is, the power parameters of each OTS include: upstream output power from an upstream node, downstream input power from a downstream node, OTS actual gain value, OTS gain range, OTS actual attenuation value, OTS attenuation range.

Specifically, the first node needs to obtain power parameters of the OTS1 and the OTS2, the power parameter of the OTS1 is obtained by a first power parameter on the first node NE1 and a second power parameter of the OTS1 node NE2, the power parameter of the OTS2 is obtained by a second power parameter of the OTS1 node NE2 and a second power parameter of the OTS2 node NE3, and each power parameter of the OTS includes an upstream output power, a downstream input power, an OTS actual gain value, an OTS gain range, an OTS actual attenuation value, and an OTS attenuation range, where the upstream output power, the downstream input power parameter, and the OTS actual gain value are used to determine whether the OTS needs to perform power adjustment, and this application takes the power parameters of the OTS1 and OTS2 obtained in different scenarios of table 1 and table 2 as an example for description. The opening scene refers to a scene of building an OTN network, and the operation and maintenance scene refers to an operation scene after the OTN network is built.

TABLE 1 Power parameters of OTS1, OTS2 under open-end scenarios

TABLE 2 Power parameters of OTS1 and OTS2 under operation and maintenance scene

Step 202, acquiring power difference information of the OTS according to the upstream output power, the downstream input power and the actual gain value of the OTS.

Specifically, the calculation modes of the power difference information of each OTS under different scenarios are the same, first, the power loss of each OTS segment is obtained according to the difference between the upstream output power and the downstream input power, then the power difference information corresponding to the OTS segment is obtained according to the difference between the actual gain value and the power loss of the OTS, in addition, after the power difference information of each OTS is obtained, the accumulated power difference information of each OTS may also be obtained (the accumulated power difference information of the OTS1 is itself, the accumulated power difference information of the OTS2 is the sum of the power difference information of the OTS1 and the OTS2, and so on), and the power difference information and the accumulated power difference information calculated according to the power parameters of the OTS1 and OTS2 given in tables 1 and 2 are shown in table 3:

TABLE 3 Power Difference information and cumulative Power Difference information for various OTS under different scenarios

OTS section	Adjusting scenes	OTS Power loss	OTS Power Difference information	OTS cumulative power difference information
					OTS1	Opening scene	28db	-8db	-8db
OTS2	Opening scene	24db	-2db	-10db
					OTS1	Operation and maintenance scene	24db	-4db	-4db
OTS2	Operation scene	24db	-3db	-7db

And step 203, when the power difference information meets the preset starting adjustment condition, acquiring the power adjustment information of the OTS according to the power parameter of the OTS.

Specifically, the method and the device can judge whether to start power regulation according to the OTS power difference information, and can also judge according to the OTS accumulated power difference information, and the judgment conditions corresponding to different judgment modes are different, and two judgment conditions can be preset: a starting adjustment condition of the power difference (corresponding to the OTS power difference information) and a starting adjustment condition of the accumulated power difference (corresponding to the OTS accumulated power difference threshold). In an adjusting process, OTS power difference information is firstly used as a condition for judging, if the power difference does not meet the starting condition, the judgment is carried out according to OTS accumulated power difference information, if the starting adjusting condition of the power difference and the starting adjusting condition of the accumulated power difference meet one condition, the whole OMS starts power adjustment. At the moment, the starting adjustment condition of the power difference comprises that the power difference information is larger than a preset power difference threshold, and the starting adjustment condition of the accumulated power difference comprises that the accumulated power difference information is larger than the preset accumulated power difference threshold; if the power difference threshold and the accumulated power difference threshold are both set to be 5db, the sum of the power difference of each OTS section and the power difference of each OTS section is required to be not more than 5db; as can be seen from table 3, in the opening scene, the power difference information of the OTS1 satisfies the adjustment condition, so that the whole OMS needs to start adjustment; in the operation and maintenance scene, although the power difference information of the OTS1 and the OTS2 does not satisfy the adjustment condition, the accumulated power difference of the OTS2 satisfies the adjustment condition, so that the whole OMS needs to start adjustment. After the judgment of whether power adjustment is started is completed, when power adjustment is needed, firstly, an optical fiber loss value of the OTS is needed to be acquired according to the upstream output power and the downstream input power of the OTS and the OTS actual attenuation value, then an OTS target gain value and an OTS target attenuation value of the OTS are respectively calculated according to the optical fiber loss value, a preset OTS attenuation value, an OTS gain range, an OTS attenuation range and an OTS actual gain value, and then power adjustment information of the OTS is calculated according to the OTS actual gain value, the OTS actual attenuation value, the OTS target gain value and the OTS target attenuation value, wherein the power adjustment information comprises attenuation adjustment information and gain adjustment information; and when both the OTS power difference information and the OTS accumulated power difference information do not meet the starting adjustment condition, the optical multiplexing section is normal, and adjustment is not needed.

It should be noted here that, when the determination is made according to the OTS power difference information or the OTS accumulated power difference information, the determination is made according to the OTS power difference information or the absolute value of the OTS accumulated power difference information.

And 204, sending the power regulation information to the OTS node corresponding to the OTS so as to regulate the power of the OTS node corresponding to the OTS according to the power regulation information.

Specifically, the OTS nodes corresponding to the OTS include two, which are respectively a sending end node and a receiving end node, and if NE1 is the sending end node of the OTS1, NE2 is the receiving end node of the OTS 1; NE2 is OTS2 originating node, NE3 is OTS2 receiving node; when each OTS is adjusted, power adjustment information needs to be sent to a receiving-end OTS node corresponding to each OTS, for example, the power adjustment information of OTS1 is sent to OTS1 node NE2, the power adjustment information of OTS2 is sent to OTS2 node NE3, the head node can send the power adjustment information in a parallel manner, that is, the head node transmits the power adjustment information to OTS1 node NE2 and OTS2 node NE3, respectively, and attenuation adjustment information and gain adjustment information in the power adjustment information include their corresponding OTS node identifiers in addition to the size to be adjusted, so as to ensure the correctness of the power adjustment information; after receiving the power adjustment information, the OTS node adjusts the gain of the optical amplifier OA according to the gain adjustment information in the power adjustment information, and adjusts the attenuation of the optical attenuator VOA according to the attenuation adjustment information in the power adjustment information, so as to complete power adjustment of each optical transmission segment, and after the adjustment is completed, the OTS node may perform the next round of adjustment or stop the adjustment.

In the embodiment of the application, in the process of adjusting the power of the optical multiplexing section, the power parameter of the optical transmission section OTS is obtained through the first node of the optical multiplexing section, wherein the power parameter includes an upstream output power, a downstream input power, and an OTS actual gain value; acquiring OTS power difference information according to the upstream output power, the downstream input power and the OTS actual gain value; when the power difference information meets the preset starting regulation condition, acquiring the power regulation information of the OTS according to the power parameter of the OTS; sending the power regulation information to an OTS node corresponding to the OTS so that the OTS node corresponding to the OTS can regulate power according to the power regulation information; the method and the device can rapidly acquire and respond to the power parameters of all OTS when the first node has service transmission, and the starting of power adjustment and the calculation of the power adjustment amount are completed by the first node, so that the technical problems of slow power parameter response of an optical transmission section and low power adjustment efficiency of the optical transmission section caused by an optical multiplexing section power adjustment method in the prior art are solved.

An embodiment of the present application relates to a method for adjusting power of an optical multiplexing section, which is applied to a head node of the optical multiplexing section, where the optical multiplexing section at least includes an optical transmission section OTS, and the OTS includes an OTS node, as shown in fig. 3A, the method specifically includes:

step 301, obtaining a first power parameter of a head node, and sending parameter request information to an OTS node corresponding to the OTS.

Step 302, receiving a second power parameter returned by the OTS node corresponding to the OTS.

Specifically, when acquiring the power parameter of each OTS, the first node first needs to acquire a first power parameter of itself, and then sends a parameter request message to the OTS node corresponding to each OTS to acquire the OTS power parameter on the OTS node, the acquiring process of the power parameter is described by taking the first node NE1, the OTS1 node NE2, and the OTS2 node NE3 shown in fig. 1 as an example, after the first node NE1 acquires the first power parameter of itself, there are two methods of sending the parameter request message to the OTS1 node NE2 and the OTS2 node NE 3: serial and parallel. Since the head node NE1 has two ways of sending the parameter request information to the OTS1 node NE2 and the OTS2 node NE3, there are also two ways when the OTS1 node NE2 and the OTS2 node NE3 return the second power parameter: serial and parallel. That is, when the serial mode is adopted for sending the parameter request information, the serial mode is also adopted for the returned second power parameter; and when the parameter request information is sent in a parallel mode, the returned second power parameter also adopts the parallel mode.

The optical multiplexing section comprises n OTS, the number of the OTS nodes is n +1, and the head node is the 1 st OTS node; and n is a natural number greater than or equal to 2.

In a serial mode, the ith OTS node sends parameter request information to the (i + 1) th OTS node, wherein i =1,2,3 \8230; (n); the ith node receives the power parameter of the (i + 1) th node and sends the read power parameter of the ith node and the received power parameter of the (i + 1) th node to the (i-1) th node.

Referring to fig. 3B, the OMS includes a head node NE1, an OTS1 node NE2, and an OTS2 node NE3. The head node NE1 reads its own power parameter and sends the parameter request information to the OTS1 node NE2, the OTS1 node NE2 reads its own power parameter after receiving the parameter request information and sends the parameter request information to the OTS2 node NE3, and the OTS2 node NE3 reads its own power parameter after receiving the parameter request information. After reading the power parameter of the node NE3 of the OTS2, the node NE3 of the OTS2 sends the power parameter of the node NE3 of the OTS1 to the node NE2 of the OTS1, and after receiving the power parameter of the node NE3 of the OTS2, the node NE2 of the OTS1 sends the power parameter of the node NE3 of the OTS2 and the power parameter of the node NE3 of the OTS2 to the head node NE1. That is, the local node sends the power parameters of the local node and the downstream node to the upstream node.

In a parallel mode, the head node sends parameter request information to the other OTS nodes except the head node in the n +1 OTS nodes. After acquiring the power parameters of the nodes NE2 and NE3, the OTS1 and the OTS2 respectively return the power parameters to the head node NE1.

Referring to fig. 3C, the OMS includes a head node NE1, an OTS1 node NE2, and an OTS2 node NE3. The head node NE1 simultaneously sends the parameter request information to the OTS1 node NE2 and the OTS2 node NE3, respectively, and the OTS1 node NE2 and the OTS2 node NE3 acquire their power parameters after receiving the parameter request information, where the parameter request information specifies the acquired node position, the type of the parameter to be returned, and the acquisition position of the power parameter.

Step 303, generating an OTS power parameter according to the first power parameter and the second power parameter.

Specifically, the first power parameter is the output power of the head node NE1, the second power parameter actually includes multiple sets of power parameter information, each set of power parameter information represents the upstream output power, the downstream input power, the actual gain value, the gain range, the actual attenuation value, the attenuation range, and the state information of an OTS segment, and taking the structure of the optical multiplexing segment shown in fig. 1 as an example, the obtained first power parameter and second power parameter are shown in table 4:

TABLE 4 first and second Power parameters

Wherein "-" indicates that the parameter of the node does not need to be acquired or does not need to be used after acquisition; for each OTS section, the upstream output power is the output power of the upstream optical amplifier OA and the downstream input power is the input power of the downstream optical amplifier OA. The output power is taken at the exit of the optical amplifier OA of each node, the input power, the actual gain value and the gain range are taken at the entrance of the optical amplifier OA of the node, and the actual attenuation value and the attenuation range are taken at the optical attenuator VOA. The obtained power parameters of the OTS based on the first power parameter and the second power parameter obtained in table 4 are shown in table 1.

And step 304, acquiring power difference information of the OTS according to the upstream output power, the downstream input power and the OTS actual gain value.

Specifically, this step is substantially the same as step 102 provided in the present embodiment, and is not repeated here.

And 305, when the power difference information meets a preset starting regulation condition, acquiring power regulation information of the OTS according to the power parameter of the OTS.

Specifically, this step is substantially the same as step 203 provided in the embodiment of the present application, and is not repeated herein.

And step 306, sending the power adjustment information to the OTS node corresponding to the OTS, so that the OTS node corresponding to the OTS performs power adjustment according to the power adjustment information.

Specifically, this step is substantially the same as step 104 provided in the present embodiment, and is not repeated herein.

Compared with the prior art, on the basis of other embodiments, the embodiment can also obtain the power parameters of each optical transmission segment OTS in a parallel obtaining manner, so that the time for obtaining the power parameters of each optical transmission segment OTS can be reduced by the first node, and the power adjusting speed of the optical multiplexing segment of the present application is further increased.

The embodiment of the application relates to a method for adjusting power of an optical multiplexing section, which is applied to a head node of the optical multiplexing section, wherein the optical multiplexing section at least comprises an optical transmission section OTS, the OTS comprises OTS nodes, and the method specifically comprises two flow charts under different scenes in the implementation.

Fig. 4A shows a flowchart in the opening scenario, which is as follows.

Step 401, obtaining power parameters of the OTS, where the power parameters include an upstream output power, a downstream input power, and an OTS actual gain value.

Specifically, this step is substantially the same as step 201 provided in the embodiment of the present application, and is not repeated herein.

And step 402, acquiring OTS power difference information according to the upstream output power, the downstream input power and the OTS actual gain value.

Specifically, this step is substantially the same as step 202 provided in the present embodiment, and is not repeated herein.

And step 403, when the power difference information meets a preset starting adjustment condition, acquiring the optical fiber loss of the OTS according to the upstream output power, the downstream input power and the actual OTS attenuation value.

Specifically, the determination that the power difference information satisfies the preset adjustment start-up is substantially the same as the determination step of step 203 provided in the embodiment of the present application, which is not repeated herein; when power difference information of each OTS section is obtained, firstly, the optical fiber loss of the OTS needs to be obtained according to the upstream output power, the downstream input power and the actual OTS attenuation value of each OTS section, and the specific calculation process is as follows: the method comprises the steps of firstly, obtaining the power loss of an OTS section according to the difference value of the upstream output power and the downstream input power, and secondly, obtaining the optical fiber loss of the OTS according to the power loss of the OTS section and the difference value of the actual attenuation value of the OTS.

And step 404, acquiring an OTS target gain value and an OTS target attenuation value of the OTS according to the optical fiber loss of the OTS, the OTS gain range and the preset OTS attenuation value.

When the system is in an open-bureau scene, the power parameters further comprise an OTS gain range and an OTS actual attenuation value. The OTS target gain value and the OTS target attenuation value of the OTS section are obtained through the optical fiber loss of the OTS, the OTS gain range and the preset OTS attenuation value.

Step 405, taking the difference between the OTS target gain value and the OTS actual gain value as OTS gain adjustment information, and taking the difference between the OTS target attenuation value and the OTS actual attenuation value as OTS attenuation adjustment information.

Specifically, after the OTS target gain value and the OTS target attenuation value of the OTS section are obtained, the OTS gain adjustment information may be obtained according to a difference between the OTS target gain value and the OTS actual gain value, and the OTS attenuation adjustment information may be obtained according to a difference between the OTS target attenuation value and the OTS actual attenuation value, where values of the OTS gain adjustment information and the OTS attenuation adjustment information may be positive values or negative values, where a positive value indicates an increase, and a negative value indicates a decrease.

Step 406, sending the OTS gain adjustment information and the OTS attenuation adjustment information to the OTS node corresponding to the OTS, so that the OTS node corresponding to the OTS performs power adjustment according to the OTS gain adjustment information and the OTS attenuation adjustment information.

Specifically, referring to fig. 4B, the OMS includes a head node NE1, an OTS1 node NE2, and an OTS2 node NE3.

Firstly, a head node NE1 sends regulation requests to an OTS1 node NE2 and an OTS2 node NE3 respectively; the adjustment request includes the OA and VOA ports that will indicate the need of adjustment, the OTS gain adjustment information corresponding to the OA that needs to be adjusted, and the OTS attenuation adjustment information corresponding to the VOA that needs to be adjusted. That is, the first node sends the adjustment request to the downstream node in a parallel manner, which is beneficial for each node to obtain the adjustment request as simultaneously as possible, thereby realizing synchronous adjustment and improving the adjustment speed and the adjustment accuracy as much as possible.

Secondly, after receiving the adjustment request, the OTS1 node NE2 and the OTS2 node NE3 perform gain adjustment or attenuation adjustment according to the port specified in the adjustment request.

Thirdly, the OTS1 node NE2 and the OTS2 node NE3 will return successful or failed adjustment responses to the head node NE1 after the adjustment is completed.

Fig. 5 is a flowchart in the operation and maintenance scenario, which is described in detail below.

And step 501, when the power difference information meets a preset starting regulation condition, acquiring the optical fiber loss of the OTS according to the upstream output power, the downstream input power and the actual OTS attenuation value.

And step 502, acquiring power difference information of the OTS according to the upstream output power, the downstream input power and the OTS actual gain value.

Step 503, when the power difference information meets the preset start-up adjustment condition, acquiring the optical fiber loss of the OTS according to the upstream output power, the downstream input power and the actual OTS attenuation value.

And step 504, obtaining an OTS target gain value and an OTS target attenuation value of the OTS according to the OTS actual gain value, the OTS optical fiber loss and the OTS attenuation range.

When the system is in an operation and maintenance scene, the power parameters further comprise an OTS actual attenuation value and an OTS attenuation range. The OTS target gain value and OTS target attenuation value of the OTS section are obtained through the optical fiber loss, OTS actual gain value and OTS attenuation range of the OTS.

And step 505, taking the difference value between the OTS target gain value and the OTS actual gain value as OTS gain adjustment information, and taking the difference value between the OTS target attenuation value and the OTS actual attenuation value as OTS attenuation adjustment information.

Step 506, sending the OTS gain adjustment information and the OTS attenuation adjustment information to the OTS node corresponding to the OTS, so as to perform power adjustment on the OTS node corresponding to the OTS according to the OTS gain adjustment information and the OTS attenuation adjustment information.

Specifically, the implementation manner of step 506 is similar to that of step 406, please refer to fig. 4B.

The steps in fig. 5 are different from those in fig. 4 only in that the parameters used for calculating the target gain value and the OTS target attenuation value in step 504 are different from those used for calculating the target gain value and OTS target attenuation value in step 404; while the specific implementation of the remaining steps is similar. The opening scene is a newly-built OTN scene, and because the service is not formally operated, the influence of the adjustment on the service is not considered, and in the operation and maintenance scene, the service is formally operated, and the influence of the adjustment on the service is required to be considered; therefore, in different scenarios, the parameters used for calculating the target gain value and the OTS target attenuation value are different.

Under different scenes, different scene parameters can be preset in the optical multiplexing section, and each OTS node can know the current scene and calculate a target gain value and an OTS target attenuation value by using parameters corresponding to the scene based on the current scene. In different scenarios, the power parameters of the OTS acquired by the head node may be the same, that is, the acquired power parameters include: the method comprises the following steps of (1) upstream output power, downstream input power, OTS actual gain value, OTS gain range, OTS actual attenuation value and OTS attenuation range; and then, selecting parameters corresponding to the scene according to different scenes to calculate a target gain value and an OTS target attenuation value. Or, in different scenarios, the head node obtains different parameters, that is, only obtains parameters required for calculating the target gain value and the OTS target attenuation value in the scenario.

Compared with the prior art, on the basis of other embodiments, the embodiment can also perform adaptive adjustment on each optical transmission section according to the power condition of each optical transmission section, thereby avoiding the unified adjustment on each optical transmission section and ensuring that the power of each optical transmission section on the multiplexing section meets the design requirement of the system.

The embodiment of the present application relates to a method for adjusting power of an optical multiplexing section, which is applied to a head node of the optical multiplexing section, where the optical multiplexing section at least includes one optical transmission section OTS, and the OTS includes an OTS node. In this embodiment, specific implementation manners for obtaining the OTS target gain value and the OTS target attenuation value in different scenarios are mainly described.

Fig. 6 shows a specific implementation process of step 404 in the embodiment shown in fig. 4. Step 404, obtaining an OTS target gain value and an OTS target attenuation value according to the optical fiber loss of the OTS, the OTS gain range, and the preset OTS attenuation value, which specifically includes the following steps.

Step 601, taking the sum of the optical fiber loss of the OTS and the preset OTS attenuation value as an ideal gain value of the OTS.

Step 602, determine whether the ideal gain value belongs to the OTS gain range.

Specifically, the acquired ideal gain value is compared with the gain range of the OTS to see whether the acquired ideal gain value is within the gain range of the OTS, if the ideal gain value does not belong to the gain range of the OTS, step 603 is executed, and if the ideal gain value belongs to the gain range of the OTS, step 604 is executed.

Step 603, taking the minimum gain value in the OTS gain range as an OTS target gain value, and taking the difference between the OTS target gain value and the optical fiber loss of the OTS as an OTS target attenuation value.

Specifically, when the ideal gain value does not belong to the OTS gain range, it indicates that the ideal gain value is smaller than the minimum value in the OTS gain range, which indicates that the ideal gain value is too small to be used, and the minimum gain value in the OTS gain range needs to be used as the OTS target gain value of the OTS; and after the OTS target gain value is determined, taking the difference value between the OTS target gain value and the OTS optical fiber loss as an OTS target attenuation value.

And step 604, taking the ideal gain value as an OTS target gain value, and taking a preset OTS attenuation value as an OTS target attenuation value.

Specifically, when the ideal gain value belongs to the OTS gain range, it is indicated that the ideal gain value is the required gain value of the current OTS, and therefore, the obtained ideal gain value may be used as the OTS target gain value of the OTS, and the preset OTS attenuation value may be used as the OTS target attenuation value.

As an example, the following is a specific example.

Table 8-1-2 shows the power parameters of the network elements read in this example

Station

Port(s)

Output power

Input power

Gain db

Gain range

Attenuation of

Attenuation range

NE1

OA1 outlet

2dbm

-

NE2

VOA2

-

8db

[0,20]db

NE2

OA2 inlet

-

-26dbm

20db

[10,40]db

-

NE2

OA2 outlet

-6dbm

-

NE3

VOA3

-

6db

[0,20]db

NE3

OA3 inlet

-

-30dbm

22db

[10,40]db

-

Tables 8-1-3 show the Power Difference information of OTS1 and OTS2 obtained in this example

Tables 8-1-4 show the power adjustment information calculated in this example

Taking the OTS1 section as an example:

fiber loss = upstream output power-downstream input power-VOA attenuation actual value =2- (-26) -8=20db

OTS target attenuation =5db

Since the minimum gain value of OTS (10 db) < fiber loss (20 db) + OTS target attenuation value (8 db), the OTS target gain value = fiber loss (20 db) + OTS target attenuation value (5 db) =25db

OTS attenuation adjustment value = OTS attenuation target value-OTS attenuation actual value =5-8= -3db

OTS gain adjustment value = OTS gain target value-OTS gain actual value =25-20=5db

The OTS attenuation adjustment value is the OTS attenuation adjustment information, and the OTS gain adjustment value is the OTS gain adjustment information.

Fig. 7 shows a specific implementation process of step 504 in the embodiment shown in fig. 5. Step 504, obtaining an OTS target gain value and an OTS target attenuation value of the OTS according to the OTS actual gain value, the optical fiber loss of the OTS, and the OTS attenuation range, which specifically includes the following steps.

Step 701, taking the difference between the actual gain value of the OTS and the optical fiber loss of the OTS as an ideal attenuation value of the OTS.

Specifically, the difference between the optical fiber loss of the OTS and the actual gain value of the OTS may be used as the ideal attenuation value of the OTS.

Step 702, determine whether the ideal attenuation value belongs to the OTS attenuation range.

Specifically, the obtained ideal attenuation value is compared with the attenuation range of the OTS to see whether the obtained ideal attenuation value is within the attenuation range of the OTS, if the ideal attenuation value belongs to the attenuation range of the OTS, step 703 is executed, and if the ideal attenuation value does not belong to the attenuation range of the OTS, step 704 is executed. .

And step 703, taking the OTS actual gain value as the OTS target gain value, and taking the ideal attenuation value as the OTS target attenuation value.

Specifically, when the ideal attenuation value belongs to the OTS attenuation range, it is described that the ideal attenuation value is the magnitude of the attenuation value required by the current OTS, that is, the actual gain value at this time and the target gain value may be considered to be the same, and the required adjustment amount is 0.

Step 704, the minimum attenuation value in the OTS attenuation range is used as the OTS target attenuation value, and the sum of the OTS target attenuation value and the optical fiber loss of the OTS is used as the OTS target gain value.

Specifically, when the ideal attenuation value does not belong to the OTS attenuation range, it is described that the ideal attenuation value is too small to be used, and the minimum attenuation value in the OTS attenuation range needs to be the OTS target attenuation value of the OTS; and after the OTS target attenuation value is determined, taking the sum of the OTS target attenuation value and the OTS optical fiber loss as the OTS target gain value.

Step 507, using the difference value between the OTS target gain value and the OTS actual gain value as OTS gain adjustment information, and using the difference value between the OTS target attenuation value and the OTS actual attenuation value as OTS attenuation adjustment information.

Specifically, this step is substantially the same as step 405 provided in the embodiment of the present application, and is not repeated herein.

And step 508, sending the OTS gain adjustment information and the OTS attenuation adjustment information to the OTS node corresponding to the OTS, so that the OTS node corresponding to the OTS performs power adjustment according to the OTS gain adjustment information and the OTS attenuation adjustment information.

Specifically, this step is substantially the same as step 404 provided in the embodiment of the present application, and is not repeated herein.

As an example, the following is a specific example.

Table 8-2-2 power parameters of network elements read in this example

Table 8-2-3 shows the OTS1, OTS2 power difference information obtained for this example

Tables 8-2-4 are the power adjustment information calculated in this example

Taking the OTS1 section as an example:

fiber loss = upstream output power-downstream input power-OTS attenuation actual value =2- (-22) -4=20db

OTS target attenuation value = OTS gain value-optical fiber loss =20-20= -0db

Since OTS target attenuation values are 0db-Ap-OTS minimum attenuation 1db, the OTS target attenuation value is

VOA target attenuation value = VOA minimum attenuation 1db

OTS target gain value = fiber loss + OTS target attenuation value =20+1=21db

OTS attenuation adjustment value = OTS target attenuation value-OTS actual attenuation value =1-4= -3db

OTS gain adjustment value =21-20=1db

Compared with the prior art, on the basis of other embodiments, the present embodiment may also have different adjustment methods when the optical transmission segment is in an unused stage, and when the optical transmission segment belongs to a starting state, the power of each optical transmission segment meets the system design requirement by adjusting the gain and attenuation on the optical transmission segment, thereby ensuring the normal operation of the receiver of the wavelength division multiplexing system; when the optical transmission segments belong to the operation and maintenance state, the power information of each optical transmission segment on the multiplexing segment is regularly monitored, the power of each optical transmission segment on the multiplexing segment is ensured to meet the design requirement of the system, and the power adjusting information can be obtained by combining the gain attribute and the attenuation attribute of each optical transmission segment when the power of each optical transmission segment is adjusted, so that the accuracy of the power adjusting information obtained by the method is better, and the power adjusting effect of the optical transmission segments is better.

The embodiment of the present application relates to a method for adjusting power of an optical multiplexing section, which is applied to a head node of the optical multiplexing section, where the optical multiplexing section at least includes one optical transmission section OTS, and the OTS includes an OTS node, and as shown in fig. 8, the method specifically includes:

step 801, obtaining power parameters of the OTS, where the power parameters include an upstream output power, a downstream input power, and an OTS actual gain value.

Specifically, this step is substantially the same as step 101 provided in the embodiment of the present application, and is not repeated herein.

And step 802, acquiring OTS power difference information according to the upstream output power, the downstream input power and the OTS actual gain value.

And 803, when the power difference information meets the preset starting adjustment condition, acquiring the power adjustment information of the OTS according to the power parameter of the OTS.

Specifically, this step is substantially the same as step 103 provided in the embodiment of the present application, and is not repeated herein.

And step 804, sending the power adjustment information to an OTS node corresponding to the OTS, so that the OTS node corresponding to the OTS performs power adjustment according to the power adjustment information.

And step 805, acquiring the adjusting times of the OMS.

Specifically, the number of times of adjustment is to adjust the OMS, and 1 is added to the number of times of adjustment for each round of adjustment, and each OTS of the OMS is adjusted in each round of adjustment. After each round of adjustment, 1 is added to the original adjustment times, which can be stored in the head node.

Step 806, when the number of adjustment times is smaller than the preset number of adjustment times, obtaining updated power parameters of each OTS, and obtaining updated power difference information of the OTS according to the updated power parameters.

Specifically, when the adjustment times of the OMS are less than the preset adjustment times, it is described that the OMS may also perform power adjustment, at this time, updated power parameters returned by the OTS after power adjustment are obtained, and power difference information is obtained according to the updated power parameters, where obtaining the updated power parameters and obtaining the power difference information according to the updated power parameters in this step are substantially the same as the obtaining steps of step 101 and step 102 provided in this embodiment of the present application, and details are not repeated here; and when the adjusting times of the OMS are larger than or equal to the preset adjusting times, the OMS can not adjust the power any more. It should be emphasized that after each power adjustment round, the adjustment times are compared with the preset adjustment times, and step 807 is executed as long as the adjustment times are smaller than the preset adjustment times; and stopping power regulation until the regulation times are greater than or equal to the preset regulation times after certain power regulation.

In step 807, when the updated power difference information meets the preset regulation stopping condition, stopping the power regulation of the network element node corresponding to the OTS.

Specifically, when the updated power difference information and the accumulated power difference information satisfy the preset regulation stop condition, it indicates that the power of each OTS section at this time satisfies the system requirement, and regulation is not required.

In addition, when the updated power difference information does not satisfy the preset adjustment stopping condition, the next adjustment is continued.

For prior art, on the basis of other embodiments, the embodiment can also automatically judge the number of times of adjustment and the power information of the optical transmission segment after adjustment after performing power adjustment on the optical transmission segment at every time, so that when a certain condition is satisfied, the power adjustment of each optical transmission segment on the multiplexing segment can be automatically stopped, and the degree of automation of the present application is higher.

In addition, it should be understood that the above steps of the various methods are divided for clarity, and the implementation may be combined into one step or split into some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included in the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.

The embodiment of the present application relates to an optical multiplexing section power adjustment system, which is applied to a head node of an optical multiplexing section, where the optical multiplexing section at least includes an optical transmission section OTS, and the OTS includes an OTS node, as shown in fig. 9, including:

a first obtaining module 901, configured to obtain a power parameter of the OTS, where the power parameter includes an upstream output power, a downstream input power, and an actual gain value of the OTS.

A second obtaining module 902, configured to obtain power difference information of the OTS according to the upstream output power, the downstream input power, and the actual gain value of the OTS.

A third obtaining module 903, configured to obtain power adjustment information of the OTS according to a power parameter of the OTS when the power difference information meets a preset start adjustment condition.

A sending module 904, configured to send the power adjustment information to the OTS node corresponding to the OTS, so that the OTS node corresponding to the OTS performs power adjustment according to the power adjustment information.

It should be understood that this embodiment is a system embodiment corresponding to other embodiments of the present application, and the present embodiment can be implemented in cooperation with other embodiments. Related technical details mentioned in other embodiments are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related technical details mentioned in the present embodiment can be applied to other embodiments as well.

It should be noted that, all modules involved in this embodiment are logic modules, and in practical application, one logic unit may be one physical unit, may also be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, a unit which is not so closely related to solve the technical problem proposed by the present invention is not introduced in the present embodiment, but this does not indicate that there is no other unit in the present embodiment.

An embodiment of the present application relates to a network device, as shown in fig. 10, including: includes at least one processor 1001; and memory 1002 communicatively coupled to the at least one processor 1001; the memory 1002 stores instructions executable by the at least one processor 1001, and the instructions are executed by the at least one processor 1001 to enable the at least one processor 1001 to execute the method for adjusting power of an optical multiplexing section according to any one of the method embodiments described above.

The memory 1002 and the processor 1001 are coupled by a bus, which may comprise any number of interconnecting buses and bridges that interconnect one or more of the various circuits of the processor 1001 and the memory 1002. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 1001 is transmitted over a wireless medium via an antenna, which further receives the data and transmits the data to the processor 1001.

The processor 1001 is responsible for managing the bus and general processing and may provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 1002 may be used for storing data used by the processor 1001 in performing operations.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application in practice.

Claims

1. An optical multiplexing section power adjusting method, applied to a head node of an optical multiplexing section, where the optical multiplexing section includes at least one optical transmission section OTS, and the OTS includes an OTS node, the method includes:

acquiring power parameters of the OTS, wherein the power parameters comprise upstream output power, downstream input power and OTS actual gain values;

acquiring power difference information of the OTS according to the upstream output power, the downstream input power and the OTS actual gain value;

when the power difference information meets a preset starting adjustment condition, acquiring power adjustment information of the OTS according to the power parameter of the OTS;

and sending the power regulation information to the OTS node corresponding to the OTS so as to regulate the power of the OTS node corresponding to the OTS according to the power regulation information.

2. The method according to claim 1, wherein the power parameters further include an OTS gain range, an OTS actual attenuation value when in an open scene; the power adjustment information comprises gain adjustment information and attenuation adjustment information;

the obtaining the power adjustment information of the OTS according to the power parameter of the OTS includes:

acquiring the optical fiber loss of the OTS according to the upstream output power, the downstream input power and the actual OTS attenuation value;

acquiring an OTS target gain value and an OTS target attenuation value of the OTS according to the optical fiber loss of the OTS, the OTS gain range and a preset OTS attenuation value;

taking the difference value between the OTS target gain value and the OTS actual gain value as the OTS gain adjustment information;

and taking the difference value between the OTS target attenuation value and the OTS actual attenuation value as the OTS attenuation adjustment information.

3. The method according to claim 1, wherein when the optical multiplexing section is in an operation and maintenance scenario, the power parameters further include an OTS actual attenuation value and an OTS attenuation range; the power adjustment information includes gain adjustment information and attenuation adjustment information;

acquiring an OTS target gain value and an OTS target attenuation value of the OTS according to the OTS actual gain value, the OTS optical fiber loss and the OTS attenuation range;

4. The method according to claim 2, wherein the obtaining the OTS target gain value and the OTS target attenuation value of the OTS according to the fiber loss of the OTS, the OTS gain range, and a preset OTS attenuation value comprises:

taking the sum of the optical fiber loss of the OTS and a preset OTS attenuation value as an ideal gain value of the OTS;

when the ideal gain value does not belong to the OTS gain range, taking the minimum gain value in the OTS gain range as the OTS target gain value, and taking the difference value between the OTS target gain value and the optical fiber loss of the OTS as the OTS target attenuation value;

and if the ideal gain value belongs to the OTS gain range, taking the ideal gain value as the OTS target gain value, and taking the preset OTS attenuation value as the OTS target attenuation value.

5. The method according to claim 3, wherein the obtaining the OTS target gain value and the OTS target attenuation value of the OTS according to the OTS actual gain value, the OTS fiber loss and the OTS attenuation range comprises:

taking the difference value between the OTS actual gain value and the optical fiber loss of the OTS as an ideal attenuation value of the OTS;

when the ideal attenuation value belongs to the OTS attenuation range, taking the OTS actual gain value as the OTS target gain value, and taking the ideal attenuation value as the OTS target attenuation value;

and when the ideal attenuation value does not belong to the OTS attenuation range, taking the minimum attenuation value in the OTS attenuation range as the OTS target attenuation value, and taking the sum of the OTS target attenuation value and the optical fiber loss of the OTS as the OTS target gain value.

6. The method according to claim 1, wherein the obtaining power difference information of the OTS according to the upstream output power, the downstream input power and the OTS actual gain comprises:

acquiring the power loss of the OTS according to the upstream output power and the downstream input power;

and acquiring power difference information of the OTS according to the actual gain and the power loss of the OTS.

7. The method according to claim 1, wherein the obtaining the power parameter of the OTS comprises:

acquiring a first power parameter of the head node, and sending parameter request information to the OTS node corresponding to the OTS;

receiving a second power parameter returned by the OTS node corresponding to the OTS;

and generating the power parameter of the OTS according to the first power parameter and the second power parameter.

8. The optical multiplexing section power optimization method according to claim 1, wherein sending the power adjustment information to the OTS further comprises:

acquiring the adjusting times of the optical multiplexing section; after each OTS in the optical multiplexing section is adjusted once, the adjusting times of the optical multiplexing section are increased by one time;

when the adjusting times are smaller than preset adjusting times, acquiring updated power parameters of the OTS, and acquiring updated power difference information of the OTS according to the updated power parameters;

when the updated power difference information meets a preset regulation stopping condition, stopping power regulation on the OTS node corresponding to the OTS;

and when the updated power difference information does not meet the preset regulation stopping condition, continuing to perform the next round of regulation.

9. The method for optimizing power of an optical multiplexing section according to claim 7, wherein the optical multiplexing section includes n OTS, and there are n +1 OTS nodes, and the head node is the 1 st OTS node; n is a natural number greater than or equal to 2;

the sending of the parameter request information to the OTS node corresponding to the OTS includes: the ith OTS node sends the parameter request information to the (i + 1) th OTS node; i =1,2,3 \8230 \8230n;

or;

the sending of the parameter request information to the OTS node corresponding to the OTS includes: the head node sends parameter request information to other OTS nodes except the head node in the n +1 OTS nodes respectively.

10. The optical multiplexing section power optimizing method according to claim 1, wherein the optical multiplexing section includes n OTS, and each of the OTS includes an originating OTS node and a terminating OTS node;

the sending the power adjustment information to the OTS node corresponding to the OTS includes: and respectively sending the power regulation information to receiving end OTS nodes corresponding to the OTS.

11. The optical multiplexing section power optimizing method according to claim 1, wherein the optical multiplexing section includes a plurality of OTS connected in sequence; after the obtaining the power difference information of the OTS according to the upstream output power, the downstream input power and the OTS actual gain value, the method further includes:

calculating the accumulated power difference information of each OTS according to the power difference information of each OTS; the accumulated power difference information of the OTS refers to the sum of the power difference information of the OTS and the OTS located upstream of the OTS;

the preset starting adjustment conditions comprise starting adjustment conditions of the power difference and starting adjustment conditions of the accumulated power difference; when the power difference information meets a preset starting adjustment condition, acquiring the power adjustment information of the OTS according to the power parameter of the OTS, including:

and when the power difference information meets the starting and adjusting conditions of the power difference, or the accumulated power difference information of the OTS meets the starting and adjusting conditions of the accumulated power difference, acquiring the power adjusting information of the OTS according to the power parameters of the OTS.

12. The optical multiplexing section power optimizing method according to claim 11, wherein the start-up adjustment condition for the power difference includes that the power difference information is greater than a preset power difference threshold, and the start-up adjustment condition for the accumulated power difference includes that the accumulated power difference information is greater than a preset accumulated power difference threshold.

13. An optical multiplexing section power adjustment system, applied to a head node of an optical multiplexing section, where the optical multiplexing section includes at least one optical transmission section OTS, and the OTS includes an OTS node, the apparatus includes:

14. A network device, comprising:

at least one processor; and the number of the first and second groups,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the optical multiplexing section power adjustment method of any of claims 1 to 12.