WO2017128608A1

WO2017128608A1 - Reverse power supply method and system and control equipment

Info

Publication number: WO2017128608A1
Application number: PCT/CN2016/086901
Authority: WO
Inventors: 高文娟
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-01-25
Filing date: 2016-06-23
Publication date: 2017-08-03
Also published as: CN106997178A

Abstract

A reverse power supply method and system and control equipment. The method comprises the following steps: control equipment detects the power down of one or more than one power supply equipment (PSE) and determines a port of access device that needs to be disabled; the control equipment disables the service of the determined port that needs to be disabled, and disables the management state of the determined port that needs to be disabled.

Description

Method and system for implementing reverse power supply and control device

Technical field

This document relates to, but is not limited to, power supply technology, and more particularly to a method and system for implementing reverse power supply and a control device.

Background technique

The traditional DPU (Distributed Processing Unit) device uses an independent power supply interface, DC or AC power supply. This requires the DPU device to have a higher environmental power requirement near the power supply. A related method for implementing a reverse power supply is provided. A power receiving device (PD, Powered Device), a user side or a terminal is added to each port of a DPU (such as an optical network unit (ONU)). PSE (Powered Supply Equipment); the PD can be set as a module in the DPU. The PSE can be an independent device or can be set as a module on the user side or the terminal. Each PD is connected to a PSE. The PSE is powered by the PSE, so that the PSE can supply power to the port corresponding to the DPU through the PD. The current flows from the user side or the terminal to the PSE, and the PSE flows to the PD, and the PD flows to the port corresponding to the DPU. This new power supply method provides a new choice, solves the DPU's difficult problem in a special environment, and does not need to lay a power line to the DPU, flexible and easy to use, simple and environmentally friendly.

The biggest problem with the reverse power supply of the DPU is that the user side or the terminal may turn off the PSE during actual use, so that the port corresponding to the DPU cannot be powered, and the DPU also shuts down the service of the corresponding port. In fact, although the DPU is turned off, the corresponding The service of the port, the port itself still has power consumption, resulting in waste of resources.

Summary of the invention

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

The embodiment of the invention provides a method and system for implementing reverse power supply and a control device, which can reduce waste of resources.

The embodiment of the invention provides a method for implementing reverse power supply, including:

The control device detects that one or more power supply devices PSE are powered off, and determines a port of the access device that needs to be turned off;

The control device shuts down the determined service of the port that needs to be shut down and shuts down the determined management state of the port that needs to be shut down.

Optionally, when the control device detects that one or more of the PSEs are powered on, the method further includes:

The control device determines the port of the access device that needs to be opened, opens the determined service of the port that needs to be opened, and opens the determined management state of the port that needs to be opened.

Optionally, the determining, by the port of the access device that needs to be powered off, includes:

Determining that the current reverse power supply mode is a fair mode, and determining that the port of the access device that needs to be powered off includes a port that is connected to the powered PSE of the access device;

Alternatively, the determining, by the port of the access device that needs to be opened, includes:

Determining that the current reverse power supply mode is a fair mode, and determining that the port of the access device that needs to be opened includes a port of the access device that is connected to the powered PSE.

Determining that the current reverse power supply mode is a friendly mode, and the number of currently opened PSEs is less than a preset value, determining the number of ports of the access device that need to be turned off, and determining that the determined number of ports that need to be turned off is greater than Zero, determining that the port of the access device that needs to be turned off is the port number of the currently opened port with the smallest or largest port number, or the port with the lowest port priority;

Where n1 is the determined number of ports that need to be turned off.

Optionally, the determining, by the number of ports of the access device that needs to be powered off, includes:

Calculating the port of the access device that needs to be turned off according to the formula n1=f(N1)-f(N1-N2);

N1 is the number of PSEs that have been opened before the PSE is powered off, N2 is the number of PSEs that are powered off, and f(N1) is N1 PSEs that are turned on before the PSE is powered off. The number of ports that the device is normally powered on, f(N1-N2) is the number of ports that the (N1-N2) PSEs that have been turned on after the PSE is powered off can be used for the access device.

Optionally, the determining, by the port of the access device that needs to be opened, includes:

Determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is greater than or equal to a preset value, determining that the port of the access device that needs to be opened includes all currently closed port.

Determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is less than a preset value, determining the number of ports of the access device that need to be opened, and determining the determined need to open The number of the ports is greater than zero, and the port of the access device that needs to be opened is the port with the largest or smallest port number or the highest port priority.

Where n2 is the determined number of ports that need to be opened.

Optionally, the determining, by the number of ports of the access device that needs to be opened, includes:

Calculating, according to the formula n2=f(N3+N4)-f(N3), the port of the access device that needs to be opened;

N3 is the number of PSEs that have been opened before the PSE is powered on, N4 is the number of PSEs that are detected to be powered on, and f(N3) is N3 PSEs that have been opened before the PSE is powered on. The number of ports that the device is normally powered on, f(N3+N4) is the number of ports that the NN+N4 PSEs that have been turned on after the PSE is powered on can be used for the access device.

Optionally, the service that the control device turns off the determined port that needs to be shut down includes:

The control device bypasses the determined service bypass port to the central office CO side of the service of the determined port that needs to be shut down by the external device;

Alternatively, the control device opens the determined service of the port that needs to be opened, including:

The control device bypasses the determined service of the port that needs to be opened to the digital subscriber line DSL side of the service of the determined port to be opened by the access device.

Optionally, the control device is an independent device or is disposed in the access device.

The invention also proposes a control device, comprising:

The power-on and power-off signal triggering module is configured to detect that one or more power supply devices PSE are powered off, and the first power-off control module sends a first notification message;

The power-on and power-off control module is configured to receive the first notification message and determine the access device that needs to be turned off. a port that is configured to shut down the service of the port that needs to be closed;

The port service management module is configured to turn off the determined management state of the port that needs to be shut down.

Optionally, the power-on and power-off trigger module is further configured to:

Detecting that one or more of the PSEs are powered on, and sending a second notification message to the power-on and power-off control module;

The power-on and power-off control module is further configured to:

Receiving the second notification message, determining the port of the access device that needs to be opened, and opening the determined service of the port that needs to be opened;

The port service management module is further configured to:

The management state of the determined port that needs to be opened is opened.

Optionally, the power-on and power-off control module is configured to implement a port for determining an access device that needs to be shut down in the following manner:

Alternatively, the power-on and power-off control module is configured to implement a port for determining an access device that needs to be opened in the following manner:

Where n1 is the determined number of ports that need to be turned off.

Optionally, the power-on and power-off control module is configured to determine the number of ports of the access device that need to be shut down in the following manner:

Optionally, the power-on and power-off control module is configured to implement a port for determining an access device that needs to be opened in the following manner:

Determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is greater than or equal to a preset value, and determining that the port of the access device that needs to be opened is included in the current closed state. All ports.

Where n2 is the determined number of ports that need to be opened.

Optionally, the power-on and power-off control module is configured to determine the number of ports of the access device that need to be opened in the following manner:

Optionally, the power-on and power-off control module is configured to implement the following operations to turn off the determined port that needs to be shut down:

Bypassing the determined service bypass port to be bypassed by an external device Determining the central office CO side of the service that needs to shut down the port;

Alternatively, the power-on and power-off control module is configured to implement the service of opening the determined port that needs to be opened in the following manner:

The service bypass of the determined port to be opened is bypassed to the digital subscriber line DSL side of the service of the determined port to be opened by the control device.

Optionally, the power-on and power-off control module includes a control unit and a bypass unit connected to the PSE;

The control unit is configured to receive the first notification message, determine the port of the access device that needs to be turned off, and control the bypass unit to bypass the service bypass of the determined port that needs to be shut down to be performed by the external device. Determining the CO side of the service of the port that needs to be shut down; or receiving the second notification message, determining the port of the access device that needs to be opened, and controlling the bypass unit to bypass the service of the determined port that needs to be opened Bypassing to the DSL side of the determined service of the port to be opened by the access device;

The bypass unit is configured to bypass the service bypass of the determined port that needs to be shut down under the control of the control unit to the CO side of the service of the determined port that needs to be shut down by an external device Or, under the control of the control unit, bypass the service bypass of the determined port to be opened to the DSL side of the service of the determined port to be opened by the access device.

Optionally, the bypass unit includes: a power separation circuit and a bypass relay connected to a service output end of the power separation circuit.

The embodiment of the invention further provides a system for implementing reverse power supply, comprising:

The control device is configured to detect that one or more power supply devices PSE are powered off, determine a port of the access device that needs to be turned off, and turn off the determined service of the port that needs to be turned off;

The access device is set to turn off the determined management state of the port that needs to be turned off.

Optionally, the control device is further configured to:

Detecting that one or more of the PSEs are powered on, determining a port of the access device that needs to be opened, and opening a determined service of the port that needs to be opened;

The access device is further configured to:

The management state of the determined port that needs to be opened is opened.

Compared with the related art, the technical solution of the embodiment of the present invention includes: the control device detects that one or more power supply devices PSE are powered off, determines a port of the access device that needs to be turned off, and determines that the control device needs to be turned off. The port's business is shut down to determine the administrative state of the port that needs to be shut down. With the solution of the embodiment of the present invention, when the PSE is powered off, the service of the determined port is turned off, and the management state of the determined port is turned off, thereby reducing the power consumption of the port that shuts down the service, so , reducing the waste of resources.

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

BRIEF abstract

1 is a flowchart of a method for implementing reverse power supply according to an embodiment of the present invention;

2 is a schematic structural diagram of a control device according to an embodiment of the present invention;

3 is a schematic structural diagram of a bypass unit in a control device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a system for implementing reverse power supply according to an embodiment of the present invention.

Embodiments of the invention

In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings, and is not intended to limit the scope of the present invention. It should be noted that the embodiments in the present application and the various manners in the embodiments may be combined with each other without conflict.

Referring to FIG. 1, an embodiment of the present invention provides a method for implementing reverse power supply, including:

Step 100: The control device detects that one or more PSEs are powered off, and determines a port of the access device that needs to be turned off.

In this step, the control device may be an independent device or may be set in the access device.

In this step, the access device may be a DPU.

In this step, how the control device specifically detects whether the PSE is powered on or off can be implemented by using the technical means well known to those skilled in the art, and is not intended to limit the scope of the present invention, and details are not described herein again.

In this step, the ports of the access device that need to be shut down include:

The current reverse power supply mode is determined to be a fair mode, and the port of the access device that needs to be closed is determined to be a port connected to the powered PSE of the access device.

Or determining that the current reverse power supply mode is a friendly mode, and the number of currently opened PSEs is less than a preset value, determining the number of ports of the access device that need to be turned off, and determining the determined port that needs to be turned off. If the number is greater than zero, determine that the port of the access device that needs to be powered off is the port number with the smallest or largest port number or the port priority level of the currently opened port; where n1 is the determined port that needs to be shut down. Number of.

Wherein, when it is determined that the determined number of ports to be turned off is equal to zero, it is determined that any port of the access device does not need to be turned off.

The current reverse power supply mode is determined to be a friendly mode, and the number of currently opened PSEs is greater than or equal to a preset value, and any port that does not need to be turned off is determined. When the number of open PSEs is greater than a preset value, it is considered that the opened PSE can supply power to the ports of all access devices, so there is no need to turn off any ports of the access device.

Wherein, the current reverse power supply mode can be preset in the control device. For example, a fair mode is indicated by 1 and a friendly mode or the like is indicated by 0. Fair mode means that a PSE only powers one port, and friendly mode means that a PSE can power one or more ports.

The number of ports that determine the access device that needs to be shut down includes:

Calculate the port of the access device that needs to be shut down according to the formula n1=f(N1)-f(N1-N2);

Among them, f(N1) and f(N1-N2) can be obtained empirically.

For example, when 1<=n and n<6, f(n)=n;

When 6<=n and n<=16, f(n)=16;

That is to say, when the number of open PSEs is less than 6, the number of ports available for access to the device is f(n)=n, that is, one PSE can only be responsible for the services of the corresponding port; =1, if other PSEs are powered on, according to the calculation, f(2)-f(1)=1, that is, the PSE that is turned on and powered on Connected port;

From the value of f(n), it can be seen that when n=6, the 16 ports of the access device can be used normally. It can be inferred that when n=5, the sixth PSE is powered on, then according to the calculation f(6)-f(5)=11, then the services of the remaining 11 ports can be opened, so that It can realize that other 7-16 PSEs can supply power to 16 ports of the access device without opening.

According to the above f(n), the power-off process can be introduced. When n=6, there is a PSE power-off. According to the calculation f(6)-f(5)=11, it is necessary to shut down the services of 11 ports, and other All the ports that are not powered by the PSE are powered off. When n=5, one PSE is powered off, and according to f(5)-f(4)=1, the services of the port connected to the powered-off PSE are closed.

Step 101: The control device turns off the determined service of the port that needs to be shut down, and turns off the determined management state of the port that needs to be shut down.

In this step, when the control device turns off the determined service of the port that needs to be shut down, it can directly shut down the determined service of the port that needs to be shut down, or bypass the service of the determined port that needs to be shut down. Bypass to the central office (CO, Central Office) side of the service that is determined by the external device and needs to be shut down.

In this step, how to specifically determine the management state of the port that needs to be shut down can be implemented by using the well-known technology of the present invention, and is not intended to limit the scope of the present invention, and details are not described herein again.

With the solution of the embodiment of the present invention, when the PSE is powered off, the service of the determined port is turned off, and the management state of the determined port is turned off, thereby reducing the power consumption of the port that shuts down the service, so , reducing the waste of resources.

Optionally, the method further includes:

When the control device detects that one or more PSEs are powered on, the method further includes:

For example, how the control device specifically detects whether the PSE is powered on can be implemented by using the well-known technology of the present invention, and is not intended to limit the scope of protection of the present invention, and details are not described herein again.

The port of the access device that needs to be opened includes:

The current reverse power supply mode is determined to be a fair mode, and the port of the access device that needs to be opened includes a port connected to the powered PSE of the access device.

Or determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is greater than or equal to a preset value, determining that the port of the access device that needs to be opened includes the PSE that is powered on All ports that are connected and are currently down.

Or determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is less than a preset value, determining the number of ports of the access device that needs to be opened, and determining the determined needs. The number of open ports is greater than zero. The port of the access device that needs to be opened is the port with the largest or smallest port number or the highest port priority. The n2 is the determined requirement. The number of open ports.

The number of ports that determine the access device that needs to be opened includes:

Calculate the port of the access device that needs to be opened according to the formula n2=f(N3+N4)-f(N3);

N3 is the number of PSEs that have been opened before the PSE is powered on, N4 is the number of PSEs that are detected to be powered on, and f(N3) is the N3 PSEs that have been opened before the PSE is powered on. The number of ports that are normally used by the device, f(N3+N4) is the number of ports that the NN+N4 PSEs that have been turned on after the PSE is powered on can provide normal access to the access device.

Among them, f(N3+N4) and f(N3) can be obtained empirically.

When the control device opens the service of the determined port to be opened, the service of the determined port to be shut down may be directly opened, or the determined service of the port to be opened may be bypassed to be determined by the control device. The digital subscriber line (DSL, Digital Subscriber Line) side of the service that needs to open the port.

For example, how to open the determined management state of the port that needs to be opened can be implemented by using the well-known technology of the present invention, and is not intended to limit the scope of protection of the present invention, and details are not described herein again.

Embodiments of the present invention also provide a computer readable storage medium storing computer executable instructions for performing any of the methods described above.

Referring to FIG. 2, an embodiment of the present invention further provides a control device, including:

The power-on and power-off signal triggering module is configured to detect that one or more power supply devices PSE are powered off, Sending a first notification message to the power-off control module;

The power-on and power-off control module is configured to receive the first notification message, determine the port of the access device that needs to be shut down, and shut down the determined service of the port that needs to be closed;

In the control device of the embodiment of the present invention, the power-on and power-off signal triggering module is further configured to:

Detecting that one or more PSEs are powered on, and sending a second notification message to the power-off control module;

The power-on and control module is also set to:

The port service management module is also set to:

Open the determined management status of the port that needs to be opened.

In the control device of the embodiment of the present invention, the power-on and power-off control module is configured to implement the port of the access device that needs to be shut down in the following manner:

Determining that the current reverse power supply mode is a fair mode, and determining that the port of the access device that needs to be powered off is a port that is connected to the powered-down PSE of the access device;

Determining that the current reverse power supply mode is a friendly mode, and the number of currently opened PSEs is less than a preset value, determining the number of ports of the access device that need to be turned off, and determining that the determined number of ports that need to be turned off is greater than Zero, determine that the port of the access device that needs to be shut down is the port number with the smallest or largest port number or the smallest port priority among the currently opened ports;

Where n1 is the determined number of ports that need to be turned off.

In the control device of the embodiment of the present invention, the power-on and power-off control module is configured to adopt the following manner Now determine the number of ports that need to be shut down for access devices:

N1 is the number of PSEs that have been opened before the PSE is powered off, N2 is the number of PSEs that are detected to be powered off, and f(N1) is the N1 PSEs that have been opened before the PSE is powered off. The number of ports that are normally used by the device, f(N1-N2) is the number of ports that the (N1-N2) PSEs that have been turned on after the PSE is powered off can supply power to the access device.

In the control device of the embodiment of the present invention, the power-on and power-off control module is configured to implement a port for determining an access device that needs to be opened in the following manner:

The current reverse power supply mode is determined to be a friendly mode, and the number of PSEs that have been opened after the PSE is powered on is greater than or equal to a preset value, and the port of the access device that needs to be opened is determined to include all ports that are currently closed.

Determining that the current reverse power supply mode is the friendly mode, and the number of ports connected to the PSE that has been opened after detecting that the PSE is powered on is smaller than the number of the second friendly ports that are preset, and determining the number of ports of the access device that need to be opened. And determining that the determined number of ports to be opened is greater than zero, and determining that the port of the access device that needs to be opened is the port number with the largest or smallest port number or the highest port priority among the currently shut down ports;

Where n2 is the determined number of ports that need to be opened.

In the control device of the embodiment of the present invention, the power-on and power-off control module is configured to determine the number of ports of the access device that need to be opened in the following manner:

In the control device of the embodiment of the present invention, the power-on and power-off control module is configured to implement the following services to turn off the determined port that needs to be shut down:

Bypassing the determined service bypass of the port that needs to be shut down to the CO side of the service of the port that needs to be shut down determined by the external device;

In the control device of the embodiment of the present invention, the power-on and power-off control module includes a control unit and a bypass unit connected to the PSE;

The control unit is configured to receive the first notification message, determine the port of the access device that needs to be shut down, and control the bypass unit to bypass the service bypass of the determined port to be determined to be determined by the external device. The CO side of the service of the port that is shut down; or, receiving the second notification message, determining the port of the access device that needs to be opened, and controlling the bypass unit to bypass the service of the determined port that needs to be opened to the server Determining, by the access device, the DSL side of the determined service of the port that needs to be opened;

The bypass unit is configured to bypass the determined service bypass of the port to be shut down to the CO side of the service of the port to be shut down determined by the external device under the control of the control unit; or, in the control unit The service bypass of the determined port to be opened is bypassed to the DSL side of the service of the determined port to be opened by the access device.

Figure 3 is a schematic diagram showing the structure of the bypass unit. As shown in FIG. 3, the bypass unit includes: a power separation circuit and a bypass relay connected to the service output of the power separation circuit.

The power separation circuit divides the output of the PSE into a power output and a service output, and the power output is connected to the PD. The service output is bypassed to the CO side or the DSL side through a bypass relay, the CO side is connected to the external device, and the DSL side is connected to the access device. If the control device is set in the access device, the DSL side is connected to the main control board of the access device.

Among them, the PD is generally built in the anti-provider board of the access device.

Referring to FIG. 4, an embodiment of the present invention further provides a system for implementing reverse power supply, including:

The control device is configured to detect that one or more power supply devices are powered off, and determine the need Shut down the port of the access device, shutting down the determined service of the port that needs to be turned off;

In the system of the embodiment of the present invention, the control device is further configured to:

Detecting that one or more PSEs are powered on, determining the port of the access device that needs to be opened, and opening the determined service of the port that needs to be opened;

The access device is also set to:

Open the determined management status of the port that needs to be opened.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program in a storage and a memory by a processor. / instruction to achieve its corresponding function. The invention is not limited to any specific form of combination of hardware and software.

It should be noted that the above-mentioned embodiments are only for the purpose of facilitating the understanding of those skilled in the art, and are not intended to limit the scope of the present invention, and those skilled in the art will Any obvious substitutions and improvements made by the invention are within the scope of the invention.

Industrial applicability

The above technical solution reduces waste of resources.

Claims

A method of implementing reverse power supply, comprising:

The control device detects that one or more power supply devices PSE are powered off, and determines a port of the access device that needs to be turned off;

The control device shuts down the determined service of the port that needs to be shut down and shuts down the determined management state of the port that needs to be shut down.
The method of claim 1 further comprising:

When the control device detects that one or more of the PSEs are powered on,

The control device determines the port of the access device that needs to be opened, opens the determined service of the port that needs to be opened, and opens the determined management state of the port that needs to be opened.
The method according to claim 1 or 2, wherein the determining the port of the access device that needs to be turned off comprises:

Determining that the current reverse power supply mode is a fair mode, and determining that the port of the access device that needs to be powered off includes a port that is connected to the powered PSE of the access device;

Alternatively, the determining, by the port of the access device that needs to be opened, includes:

Determining that the current reverse power supply mode is a fair mode, and determining that the port of the access device that needs to be opened includes a port of the access device that is connected to the powered PSE.
The method according to claim 1 or 2, wherein the determining the port of the access device that needs to be turned off comprises:

Determining that the current reverse power supply mode is a friendly mode, and the number of currently opened PSEs is less than a preset value, determining the number of ports of the access device that need to be turned off, and determining that the determined number of ports that need to be turned off is greater than Zero, determining that the port of the access device that needs to be turned off is the port number of the currently opened port with the smallest or largest port number, or the port with the lowest port priority;

Where n1 is the determined number of ports that need to be turned off.
The method of claim 4 wherein said determining the number of ports of the access device that need to be turned off comprises:

Calculating the port of the access device that needs to be turned off according to the formula n1=f(N1)-f(N1-N2);

N1 is the number of PSEs that have been opened before the PSE is powered off, N2 is the number of PSEs that are powered off, and f(N1) is N1 PSEs that are turned on before the PSE is powered off. The number of ports that the device is normally powered on, f(N1-N2) is the number of ports that the (N1-N2) PSEs that have been turned on after the PSE is powered off can be used for the access device.
The method of claim 2, wherein the determining the port of the access device that needs to be opened comprises:

Determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is greater than or equal to a preset value, determining that the port of the access device that needs to be opened includes all currently closed port.
The method of claim 2, wherein the determining the port of the access device that needs to be opened comprises:

Determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is less than a preset value, determining the number of ports of the access device that need to be opened, and determining the determined need to open The number of the ports is greater than zero, and the port of the access device that needs to be opened is the port with the largest or smallest port number or the highest port priority.

Where n2 is the determined number of ports that need to be opened.
The method of claim 7, wherein the determining the number of ports of the access device that need to be opened comprises:

Calculating, according to the formula n2=f(N3+N4)-f(N3), the port of the access device that needs to be opened;

N3 is the number of PSEs that have been opened before the PSE is powered on, N4 is the number of PSEs that are detected to be powered on, and f(N3) is N3 PSEs that have been opened before the PSE is powered on. The number of ports that the device is normally powered on, f(N3+N4) is the number of ports that the NN+N4 PSEs that have been turned on after the PSE is powered on can be used for the access device.
The method according to claim 1 or 2, wherein the control device turns off the determined services of the ports that need to be turned off, including:

The control device bypasses the determined service bypass port to bypass The central device performs the determined central office CO side of the service of the port that needs to be turned off;

Alternatively, the control device opens the determined service of the port that needs to be opened, including:

The control device bypasses the determined service of the port that needs to be opened to the digital subscriber line DSL side of the service of the determined port to be opened by the access device.
The method according to claim 1 or 2, wherein the control device is a standalone device or is disposed in the access device.
A control device comprising:

The power-on and power-off signal triggering module is configured to detect that one or more power supply devices PSE are powered off, and the first power-off control module sends a first notification message;

The power-on and power-off control module is configured to receive the first notification message, determine the port of the access device that needs to be shut down, and shut down the determined service of the port that needs to be closed;

The port service management module is configured to turn off the determined management state of the port that needs to be shut down.
The control device according to claim 11, wherein the up and down electrical signal triggering module is further configured to:

Detecting that one or more of the PSEs are powered on, and sending a second notification message to the power-on and power-off control module;

The power-on and power-off control module is further configured to:

Receiving the second notification message, determining the port of the access device that needs to be opened, and opening the determined service of the port that needs to be opened;

The port service management module is further configured to:

The management state of the determined port that needs to be opened is opened.
The control device according to claim 11 or 12, wherein the power-on and power-off control module is configured to implement a port for determining an access device that needs to be turned off in the following manner:

Determining that the current reverse power supply mode is a fair mode, and determining that the port of the access device that needs to be powered off includes a port that is connected to the powered PSE of the access device;

Alternatively, the power-on and power-off control module is configured to implement a port for determining an access device that needs to be opened in the following manner:

Determining that the current reverse power supply mode is a fair mode, and determining that the port of the access device that needs to be opened includes a port of the access device that is connected to the powered PSE.
The control device according to claim 11 or 12, wherein the power-on and power-off control module is configured to implement a port for determining an access device that needs to be turned off in the following manner:

Determining that the current reverse power supply mode is a friendly mode, and the number of currently opened PSEs is less than a preset value, determining the number of ports of the access device that need to be turned off, and determining that the determined number of ports that need to be turned off is greater than Zero, determining that the port of the access device that needs to be turned off is the port number of the currently opened port with the smallest or largest port number, or the port with the lowest port priority;

Where n1 is the determined number of ports that need to be turned off.
The control device according to claim 14, wherein the power-on and power-off control module is configured to implement the number of ports determining the access device that needs to be turned off in the following manner:

Calculating the port of the access device that needs to be turned off according to the formula n1=f(N1)-f(N1-N2);

N1 is the number of PSEs that have been opened before the PSE is powered off, N2 is the number of PSEs that are powered off, and f(N1) is N1 PSEs that are turned on before the PSE is powered off. The number of ports that the device is normally powered on, f(N1-N2) is the number of ports that the (N1-N2) PSEs that have been turned on after the PSE is powered off can be used for the access device.
The control device according to claim 12, wherein the power-on and power-off control module is configured to implement a port for determining an access device that needs to be opened in the following manner:

Determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is greater than or equal to a preset value, determining that the port of the access device that needs to be opened includes all currently closed port.
The control device according to claim 12, wherein the power-on and power-off control module is configured to implement a port for determining an access device that needs to be opened in the following manner:

Determining that the current reverse power supply mode is the friendly mode, and detecting that the number of PSEs that have been opened after the PSE is powered on is less than a preset value, determining the number of ports of the access device that need to be opened, and determining the determined need to open The number of the ports is greater than zero, and the port of the access device that needs to be opened is the port with the largest or smallest port number or the highest port priority.

Where n2 is the determined number of ports that need to be opened.
The control device according to claim 17, wherein the power-on and power-off control module is configured to implement the number of ports determining the access device that needs to be opened in the following manner:

Calculating, according to the formula n2=f(N3+N4)-f(N3), the port of the access device that needs to be opened;

N3 is the number of PSEs that have been opened before the PSE is powered on, N4 is the number of PSEs that are detected to be powered on, and f(N3) is N3 PSEs that have been opened before the PSE is powered on. The number of ports that the device is normally powered on, f(N3+N4) is the number of ports that the NN+N4 PSEs that have been turned on after the PSE is powered on can be used for the access device.
The control device according to claim 11 or 12, wherein the power-on and power-off control module is configured to implement a service for shutting down the determined port that needs to be turned off in the following manner:

Bypassing the determined service of the port that needs to be shut down to the central office CO side of the service of the determined port that needs to be shut down by the external device;

Alternatively, the power-on and power-off control module is configured to implement the service of opening the determined port that needs to be opened in the following manner:

The service bypass of the determined port to be opened is bypassed to the digital subscriber line DSL side of the service of the determined port to be opened by the control device.
The control device according to claim 19, wherein said power-on and power-off control module comprises a control unit and a bypass unit connected to said PSE;

The control unit is configured to receive the first notification message, determine the port of the access device that needs to be turned off, and control the bypass unit to bypass the service bypass of the determined port that needs to be shut down to be performed by the external device. Determining the CO side of the service of the port that needs to be shut down; or receiving the second notification message, determining the port of the access device that needs to be opened, and controlling the bypass unit to bypass the service of the determined port that needs to be opened Bypassing to the DSL side of the determined service of the port to be opened by the access device;

The bypass unit is configured to bypass the service bypass of the determined port that needs to be shut down under the control of the control unit to the CO side of the service of the determined port that needs to be shut down by an external device Or bypassing the determined service of the port to be opened under the control of the control unit to the determined end to be opened by the access device The DSL side of the mouth of the service.
The control device according to claim 20, wherein said bypass unit comprises: a power supply separation circuit and a bypass relay connected to a service output of said power supply separation circuit.
A system for implementing reverse power supply, including:

The control device is configured to detect that one or more power supply devices PSE are powered off, determine a port of the access device that needs to be turned off, and turn off the determined service of the port that needs to be turned off;

The access device is set to turn off the determined management state of the port that needs to be turned off.
The system of claim 22, the control device further configured to:

Detecting that one or more of the PSEs are powered on, determining a port of the access device that needs to be opened, and opening a determined service of the port that needs to be opened;

The access device is further configured to:

The management state of the determined port that needs to be opened is opened.