WO2018121645A1

WO2018121645A1 - Method and device for controlling g.fast port

Info

Publication number: WO2018121645A1
Application number: PCT/CN2017/119243
Authority: WO
Inventors: 张永学
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-12-28
Filing date: 2017-12-28
Publication date: 2018-07-05
Also published as: CN108259276A; CN108259276B

Abstract

Disclosed are a method and device for controlling a G.FAST port. The method comprises: detecting VDSL interference of a G.FAST port; and controlling opening and closing of a VDSL interference frequency band of the G.FAST port according to the detected VDSL interference.

Description

Method and device for controlling G.FAST port

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for controlling a G.FAST port.

Background technique

With the increasing use of data services, the traditional Very High Speed Digital Subscriber Line (VDSL), Asymmetric Digital Subscriber Line (ADSL) and Vectoring technologies are no longer sufficient for users. Demand. In this case, G.FAST appeared. G.FAST is a Digital Subscriber Line (DSL) protocol standard for local lines shorter than 500 meters. Depending on the length of the line, G.FAST's performance target is between 150 Mbps and 1 Gbps.

The existing communication port is compatible with G.FAST lines and VDSL lines. This setup preserves the original copper access, eliminates the need to deploy additional fiber in the user's home, and increases the bandwidth to 1 Gbps. Since the G.FAST line will increase the frequency band from 30 MHz to 106 MHz/212 MHz, the G.FAST line and the VDSL line overlap in the frequency band below 30 MHz. The interference caused by the overlapping frequency bands is very strong, so the stability of the line is poor.

In order to solve this interference problem, it is necessary to know in advance the access mode of the DSL in the transmission cable before deploying the G.FAST device. If a VDSL customer premises equipment (CPE) is connected, you need to disable the VDSL band of the G.FAST port to avoid interference. If there is no VDSL CPE access, in order to increase the G.FAST access rate, the VDSL band needs to be turned on. If the VDSL CPE access is not considered when deploying the G.FAST device, or if some users connect to the VDSL CPE without re-configuring to turn off the VDSL band, it will bring errors to the G.FAST line due to interference problems. Code or link disconnection, and this will bring a lot of maintenance work.

In some cases, when deploying a G.FAST device, you must know in advance whether there is VDSL interference on the transmission line. If VDSL interference is present, additional configuration is required to shut down the VDSL band of the G.FAST line. In addition, when the VDSL interference on the G.FAST line no longer exists, the G.FAST line configuration needs to be modified again to increase the G.FAST access rate, thus increasing the workload.

Summary of the invention

The present invention provides a method and apparatus for controlling a G.FAST port to solve the problem of an increase in workload caused by manually changing the opening and closing of a VDSL band of a G.FAST line in the prior art.

One aspect of the present invention provides a method of controlling a G.FAST port, comprising: detecting VDSL interference of a G.FAST port; and controlling opening and closing of a VDSL interference band of the G.FAST port according to the detected VDSL interference.

Another aspect of the present invention provides an apparatus for controlling a G.FAST port, comprising: a detecting unit configured to detect VDSL interference of the G.FAST port; and a control unit configured to detect according to the detecting unit VDSL interference controls the opening and closing of the VDSL interference band of the G.FAST port.

DRAWINGS

1 is a flow chart showing a method of controlling a G.FAST port according to an embodiment of the present invention;

2 is a schematic flow chart of a method for acquiring a disturbed VDSL frequency band to be adjusted of a G.FAST port according to an embodiment of the present invention;

3 is a schematic flow chart of a method for determining a VDSL interference frequency band according to an embodiment of the present invention;

4 is a schematic flow chart of a method for controlling opening and closing of a VDSL interference band of a G.FAST port according to an embodiment of the present invention;

5 is a schematic flow chart of a method for turning off a VDSL interference band of a G.FAST port according to an embodiment of the present invention;

6 is a schematic flow chart of a method for disconnecting and re-establishing a G.FAST port according to an embodiment of the present invention;

Figure 7 is a block diagram showing the structure of an apparatus for controlling a G.FAST port according to an embodiment of the present invention.

detailed description

In order to solve the problem that in some cases, it is necessary to manually modify the opening and closing of the VDSL band of the G.FAST line to increase the workload, the present invention provides a method and apparatus capable of adaptively controlling the G.FAST port. The stability of the line can be improved by detecting the VDSL interference of the G.FAST port and automatically adjusting the VDSL interference band of the G.FAST port (ie, the interfered VDSL band) according to the detected VDSL interference. In addition, after the VDSL interference in the line is eliminated, the closed VDSL band can be automatically turned on, thereby increasing the G.FAST link establishment rate and reducing the maintenance workload.

The inventive concept will be further described in detail below in conjunction with the drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

1 is a flow chart showing a method of controlling a G.FAST port according to an embodiment of the present invention.

As shown in FIG. 1, a method of controlling a G.FAST port according to an embodiment of the present invention may include steps S101 and S102.

In step S101, VDSL interference of the G.FAST port is detected.

In step S102, the VDSL interference band of the G.FAST port is turned on and off according to the detected VDSL interference.

That is to say, by detecting the VDSL interference of the G.FAST port, and automatically adjusting the opening and closing of the VDSL interference band of the G.FAST port according to the result of detecting the VDSL interference.

According to the embodiment of the present invention, the maintenance workload is reduced by analyzing whether there is VDSL interference on each line of the current G.FAST device and automatically turning the VDSL band on or off. In the case of interference, the method of controlling the G.FAST port according to an embodiment of the present invention can improve line stability by turning off the interfered VDSL band. With the deployment of G.FAST, after the VDSL interference in the line is eliminated, the closed VDSL band can be automatically turned on, thereby increasing the G.FAST link-building rate.

According to an embodiment of the present invention, step S101 may include: acquiring a background noise value of the G.FAST port; determining whether the G.FAST port has VDSL interference according to the background noise value; and determining VDSL interference of the G.FAST port if there is VDSL interference The range of the frequency band.

According to the embodiment of the present invention, whether the VDSL frequency band of the G.FAST port is interfered by obtaining the uplink and downlink background noise of a port (ie, G.FAST port) that is built in the G.FAST mode can be determined. Determine the range of the VDSL interference band in the case where the VDSL band is interfered.

For the detected VDSL interference frequency band, the VDSL frequency band is turned off when the respective ports of the G.FAST device are newly built. If VDSL interference is not detected, it is determined according to a specific strategy whether to turn on the closed VDSL band when the respective ports of the next G.FAST device are chained.

It should be noted that, according to an embodiment of the present invention, a computer program for implementing the above operations may be stored in a computer-readable storage medium, and the current G.FAST device may be viewed by running various computer programs to check whether there is VDSL interference in the current G.FAST device. The range of the VDSL interference band, the historical information of the VDSL interference, and the current link state of each G.FAST port and the parameter information used in the current chain construction.

According to an embodiment of the present invention, the background noise value of the G.FAST port can be obtained by acquiring the background noise value of each G.FAST port by polling; or obtaining the background of the G.FAST port by random selection. Noise value.

According to an embodiment of the invention, the interference analysis of the VDSL frequency band may be periodic and continuous, that is, all or part of the ports chained in the G.FAST mode (ie, the G.FAST port) may be used at certain time intervals. The background noise is polled for analysis and/or a certain G.FAST port is randomly selected for analysis. The time interval of polling can be set according to actual conditions. For example, the time interval can be set to any length of time within a range of 10 minutes to 6 hours.

According to an embodiment of the invention, the background noise is not limited to the number of ports of the G.FAST device, nor is it limited to uplink or downlink. The background noise of one or several G.FAST ports can be periodically queried and analyzed. If there is a G.FAST port that is built in VDSL mode, it is possible to directly determine the presence of VDSL interference and determine the range of the VDSL interference band according to the link establishment condition.

According to an embodiment of the present invention, the VDSL interference band is not necessarily a fixed interference of the entire frequency band (for example, 8 MHz, 12 MHz, 17 MHz, 30 MHz, 35 MHz, etc.), for example, there may be interference from 2.2 MHz to an unfixed frequency band. This is because VDSL users in the cable may access other VDSL devices. Because the transmission distance is uncertain, the bandwidth (bandwidth) occupied by VDSL interference is also uncertain.

According to an embodiment of the present invention, the background noise to be analyzed is not particularly limited. For example, the background noise of a G.FAST port having the greatest influence on the uplink and downlink background noise of multiple G.FAST ports may be analyzed, or randomly selected. Analysis of the background noise of a G.FAST port can also be performed by superimposing the upstream and downstream background noise of multiple G.FAST ports, or by averaging the superimposed noises. It is also possible to analyze only the upstream or downstream background noise of the G.FAST port, and so on.

According to the embodiment of the present invention, the step of determining whether the G.FAST port has VDSL interference according to the background noise value may include: comparing the background noise value with a preset noise threshold, when the background noise value exceeds a preset noise threshold, Determine the presence of VDSL interference.

According to an embodiment of the invention, the preset noise threshold is a preset line background noise plus a specific threshold m (dB). Typically, m is an empirical value, for example, a value greater than 20 dB can be taken.

The preset line background noise is usually an empirical value, for example, white noise can be used directly. The empirical value of white noise is less than -140 dBm/Hz. Typically, the empirical value is related to the line environment, for example, may be -130 dBm/Hz or -135 dBm/Hz.

According to an embodiment of the invention, the preset line background noise can also be calculated by averaging the background noise of a particular frequency band after 35 MHz of the line.

It can be determined whether there is a disturbed VDSL frequency band by analyzing whether the average power spectral density (PSD) level of the downlink DS1 frequency band of the VDSL is greater than a preset threshold.

According to an embodiment of the invention, the range of the VDSL interference frequency band can be determined by means of a filtering window.

It can be determined whether there is VDSL interference by analyzing whether the PSD average value in the filter window of width w is greater than a specific threshold value n (dBm/Hz). If the average PSD in the filter window is less than a certain threshold, the midpoint of the filter window is considered to be the boundary value of the VDSL interference band. The size of the filter window width w and the threshold value n are both empirical values. Typically, the filter window width w can take a value between 20 kHz and 200 kHz, and the threshold value n can take a value between -120 and -80 dBm/Hz.

According to the embodiment of the present invention, the VDSL interference band of the G.FAST port can be determined to be turned off or turned on according to the detected VDSL interference and the link establishment condition of the G.FAST port, and the VDSL interference band of the G.FAST port is controlled to be turned off or on. It includes: blocking the interfered VDSL band of the unchained G.FAST port; opening the undisturbed VDSL band of the established G.FAST port; and disturbing the G.FAST port of the established chain In the VDSL band, the VDSL interference band of the G.FAST port is controlled to be turned off when the G.FAST port is disconnected.

According to the embodiment of the present invention, the VDSL frequency band that is turned off may be a frequency band obtained by adding a certain protection margin based on the bandwidth (bandwidth) occupied by the detected VDSL interference. For example, if the detected VDSL interference band is x (MHz), the closed VDSL band may be x+k (MHz). Generally, the guard margin k can be taken from 0 to 3 MHz. In addition, the VDSL interference band x (MHz) may take any value between 2.2 and 35 MHz.

According to an embodiment of the present invention, the VDSL interference band can be quantized to 8 MHz, 12 MHz, 17 MHz, 30 MHz, 35 MHz according to the VDSL standard, but the present invention is not limited thereto.

According to an embodiment of the present invention, the G.FAST port being built is not dropped, nor is the link building parameter modified. After the G.FAST port is disconnected, determine whether the link-building parameters need to be modified. For the G.FAST port being built, the bit bearer of the interfered VDSL band can be temporarily adjusted by Bitswap and Seamless Rate Adaptation (SRA) technology to reduce the impact of VDSL interference. Since VDSL is a Frequency Division Duplexing (FDD) mode and G.FAST is a Time Division Duplexing (TDD) mode, G.FAST ports are subject to the upstream frequency band of VDSL users, both upstream and downstream. The impact of the downlink frequency band. After the port of the G.FAST device is adjusted by the bit, the stability is generally no problem in a short time, but there may be an errored second (ES) increase or packet loss over a long period of time. In order to avoid the user being affected by the switch caused by VDSL interference too frequently, the update of the link-building parameters can be played again when the G.FAST port is built next time.

Various methods according to embodiments of the present invention will be explained and explained in detail below through FIGS. 2 through 6.

2 is a schematic flow chart of a method for acquiring a disturbed VDSL frequency band to be adjusted of a G.FAST port according to an embodiment of the present invention.

As shown in FIG. 2, the method for obtaining the interfered VDSL frequency band to be adjusted of the G.FAST port according to the embodiment of the present invention may include steps S201 to S204.

In step S201, the uplink and/or downlink background noise values on the G.FAST line of the established chain are obtained.

According to an embodiment of the present invention, the background noise to be analyzed is not particularly limited. For example, a G.FAST port having the greatest influence on the uplink and downlink background noise of a plurality of link-building G.FAST ports may be analyzed, or randomly selected. Analysis of the background noise of a G.FAST port can also be performed by superimposing the upstream and downstream background noise of multiple G.FAST ports, or by averaging the superimposed noise. In addition, it is also possible to analyze only the upstream or downstream background noise of the G.FAST port of the chain.

In step S202, the acquired background noise value is compared with a preset threshold to determine whether there is VDSL interference.

According to an embodiment of the invention, the preset threshold is a preset line background noise plus a specific threshold m (dB). Typically, m is an empirical value, for example, a value greater than 20 dB can be taken.

It can be determined whether there is a disturbed VDSL frequency band by analyzing whether the average PSD level of the downlink DS1 frequency band of the VDSL is greater than a preset threshold.

In step S203, if there is VDSL interference, the range of the VDSL interference band can be determined by means of a filtering window.

At step S204, a VDSL interference band is determined.

It can be determined whether there is VDSL interference by analyzing whether the PSD average value in the filter window of width w is greater than a specific threshold value n (dBm/Hz). If the average PSD in the filter window is less than a specific threshold, the midpoint of the filter window is considered to be the boundary value of the VDSL interference band. The size of the filter window width w and the threshold value n are both empirical values. Typically, the filter window width w can take a value between 20 kHz and 200 kHz, and the threshold value n can take a value between -120 and 80 dBm/Hz.

In addition, the complexity of the algorithm can be reduced by quantization, and the switching frequency of configuration parameters can be reduced to improve the stability of the system.

3 is a flow chart showing a method of determining a VDSL interference band according to an embodiment of the present invention.

According to an embodiment of the invention, the range of the VDSL interference frequency band can be determined by means of a filtering window. Narrowband interference and VDSL interference can be effectively distinguished by selecting an appropriate filter window width w and a PSD threshold value n. As shown in FIG. 3, the method for determining a VDSL interference band according to an embodiment of the present invention may include steps S301 to S309.

In step S301, the background noise to be analyzed is acquired.

In step S302, it is determined whether the average PSD level of the downlink DS1 frequency band of the VDSL is greater than a preset threshold. For example, the preset threshold may be a preset line background noise (eg, -140 dBm/Hz) plus a specific threshold m (dB).

In step S303, if it is not greater than the preset threshold (ie, the "NO" branch of step S302), it is determined that there is no VDSL interference.

In step S304, if it is greater than the threshold (ie, the "YES" branch of step S302), it is determined that there is VDSL interference, and the range of the VDSL interference band is determined to continue. For example, the decision can be made from a filter window having a width w starting from 2.2 MHz.

At step S305, the average PSD within the filter window is calculated.

At step S306, it is determined whether the average PSD within the filter window is greater than a threshold value n (dBm/Hz).

In step S307, if it is greater than the threshold value n (dBm/Hz) (ie, the "YES" branch of step S306), the filter window slides s (MHz) in the high frequency direction, and steps S305 and S306 are repeated until the filter window The average PSD within is less than the threshold n (dBm/Hz).

In step S308, if it is less than the threshold value n (dBm/Hz) (ie, the "NO" branch of step S306), the intermediate frequency point of the current filter window is acquired as the maximum value of the VDSL interference band.

In step S309, the acquired VDSL interference frequency band is quantized in the manner of 8 MHz, 12 MHz, 17 MHz, 30 MHz, and 35 MHz, and the finally obtained quantized value is determined as the maximum frequency band of the VDSL interference.

4 is a flow chart showing a method of controlling the opening and closing of a VDSL interference band of a G.FAST port according to an embodiment of the present invention.

As shown in FIG. 4, the method of controlling the opening and closing of the VDSL interference band of the G.FAST port according to an embodiment of the present invention may include steps S401 to S406.

In step S401, the determination result of the VDSL interference is acquired.

In step S402, it is determined whether there is VDSL interference according to the determination result.

In step S403, if there is VDSL interference (i.e., the "YES" branch of step S402), it is determined whether the current VDSL interference is the same as the previous VDSL interference. In the same case (i.e., the "YES" branch of step S403), no processing is performed, and the process returns to step S401; in the different case (i.e., the "NO" branch of step S403), the process proceeds to step S404. It should be recognized that whether the VDSL interference is different from the previous VDSL interference may be from no VDSL interference to VDSL interference, or may be from a case where the VDSL interference band is low to a case where the VDSL interference band is high.

In step S404, the currently interfered VDSL frequency band is turned off.

In step S405, if there is no VDSL interference (ie, the "NO" branch of step S402), it is further analyzed whether the closed VDSL band needs to be turned on. If the closed VDSL band does not need to be turned on (ie, the "NO" branch of step S405), no processing is performed and the process returns to step S401; if the closed VDSL band needs to be turned on (ie, the "YES" branch of step S405 Then, the process proceeds to step S406. For example, the determination of step S405 can be performed based on whether or not there is no VDSL interference exceeding a certain length of time (for example, k days).

In step S406, the closed VDSL band is turned on.

According to the embodiment of the present invention, after determining the VDSL interference band of the G.FAST port to be closed according to the detected VDSL interference and the link establishment condition of the G.FAST port, and before controlling to turn off the VDSL interference band, it may be determined that the VDSL interference band is to be turned off. Whether the VDSL interference band is being used, if the VDSL interference band to be turned off is being used, the flag of the G.FAST port is set, and when the G.FAST port is disconnected, according to the flag that is set The bit turns off the VDSL interference band.

5 is a flow diagram of a method of shutting down a VDSL interference band of a G.FAST port, in accordance with an embodiment of the present invention.

As shown in FIG. 5, the method for turning off the VDSL interference band of the G.FAST port according to an embodiment of the present invention may include steps S501 to S505.

In step S501, it is determined according to the detection result that the VDSL interference band needs to be turned off.

In step S502, the link establishment status of all current G.FAST ports is queried.

In step S503, it is determined whether each G.FAST port is built.

At step S504, for the chained G.FAST port (ie, the "yes" branch of step S503), the flag of the G.FAST port is set and the configuration parameters are updated when the G.FAST port is dropped.

In step S505, for the unchained G.FAST port (ie, the "NO" branch of step S503), the configuration parameters are directly delivered.

That is, according to the embodiment of the present invention, before the VDSL interference band is turned off, it is determined whether the VDSL interference band to be turned off is being used to avoid affecting the normal use of the user.

6 is a flow chart showing a method of disconnecting and re-establishing a G.FAST port according to an embodiment of the present invention.

As shown in FIG. 6, the method of disconnecting and re-establishing a G.FAST port according to an embodiment of the present invention may include steps S601 to S606.

In step S601, the G.FAST port is disconnected and the corresponding processing flow is executed.

It may be caused by a bad link quality, or it may be caused by a user's active trigger.

At step S602, it is determined whether the flag bit of the G.FAST port is set.

In step S603, if the flag bit of the G.FAST port is not set, the chain is re-chained or maintained in accordance with the current configuration of the G.FAST port.

At step S604, if the G.FAST port flag is set, the update configuration flow is performed.

At step S605, the set flag of the G.FAST port is reset.

In step S606, the chain is re-established or maintained in accordance with the updated configuration of the G.FAST port.

According to the embodiment of the present invention, in order to facilitate the actual situation of each G.FAST port, various methods can be implemented to query the current VDSL interference situation, the historical VDSL interference situation, and whether the current configuration of each G.FAST port is closed. The VDSL interference band, the link state of each G.FAST port, and so on. In addition, when the VDSL interference band changes, or when it is determined that the VDSL interference band is turned off, the corresponding notification can be reported.

According to the embodiment of the present invention, the user can issue various status query commands to query the running status of each port of the current G.FAST device and collect all relevant information on the current G.FAST device, including but not limited to the current VDSL interference situation, historical VDSL interference situation, whether the current configuration of each G.FAST port has closed the VDSL interference frequency band, the link status of each G.FAST port, the flag of each G.FAST port, etc., and the query result Return to the user in relation to the collection.

When it is detected that the VDSL interference band changes, the network management can report the notification. If you need to enable the VDSL interference band that is turned off, you can also report the notification to the NMS.

In general, according to various embodiments of the present invention, maintenance workload is reduced by analyzing whether there is VDSL interference on each line of the current G.FAST device and automatically turning the VDSL band on or off. In the case of interference, the method of controlling the G.FAST port according to an embodiment of the present invention can improve line stability by turning off the interfered VDSL band. With the deployment of G.FAST, after the VDSL interference in the line is eliminated, the closed VDSL band can be automatically turned on, thereby increasing the G.FAST link-building rate.

7 is a block diagram showing the structure of an apparatus for controlling a G.FAST port according to an embodiment of the present invention.

As shown in FIG. 7, an apparatus for controlling a G.FAST port according to an embodiment of the present invention may include: a detecting unit configured to detect VDSL interference of a G.FAST port; and a control unit configured to detect VDSL according to the detecting unit The interference controls the closing or opening of the VDSL interference band of the G.FAST port.

According to an embodiment of the present invention, the detecting unit may include: an acquiring module configured to acquire a background noise value of the G.FAST port; and an analyzing module configured to determine whether the G.FAST port has VDSL interference according to the background noise value, and If there is VDSL interference, determine the range of VDSL interference bands for the G.FAST port.

According to an embodiment of the invention, the acquisition module may be configured to acquire the background noise value of each G.FAST port by polling. Alternatively or additionally, the acquisition module can be configured to acquire the background noise value of the G.FAST port by random selection.

According to an embodiment of the present invention, the analysis module may be configured to compare the background noise value with a preset noise threshold, and determine that there is VDSL interference when the background noise value exceeds a preset noise threshold, and the method may determine by using a filtering window. The range of the VDSL interference band of the G.FAST port.

According to an embodiment of the present invention, the control unit may be configured to determine to turn off or turn on the VDSL interference band of the G.FAST port according to the VDSL interference detected by the detecting unit and the link establishment condition of the G.FAST port, and control the VDSL of the G.FAST port. The interference band is turned off or on.

According to an embodiment of the invention, the control unit may be configured to determine, after the VDSL interference band of the G.FAST port is to be turned off according to the VDSL interference detected by the detecting unit and the link establishment condition of the G.FAST port, and before controlling to turn off the VDSL interference band, Judging whether the VDSL interference band is to be used, if the VDSL interference band to be turned off is being used, the flag of the G.FAST port is set, and when the G.FAST port is disconnected, according to the The bit flag of the bit turns off the VDSL interference band.

According to various embodiments of the present invention, the VDSL interference of the G.FAST port is detected, and the VDSL interference band of the G.FAST port is automatically turned on and off according to the detected VDSL interference, that is, the line is improved by turning off the interfered VDSL band. Stability, and after the VDSL interference in the line is eliminated, the VDSL band that is turned off is automatically turned on, thereby increasing the G.FAST link-building rate and reducing the maintenance workload.

While the preferred embodiments of the present invention have been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.

Claims

A method of controlling a G.FAST port, comprising:

Detecting ultra-high speed digital subscriber line VDSL interference on the G.FAST port;

Controlling the opening and closing of the VDSL interference band of the G.FAST port according to the detected VDSL interference.
The method of claim 1 wherein the step of detecting VDSL interference at the G.FAST port comprises:

Obtaining a background noise value of the G.FAST port;

Determining whether the G.FAST port has VDSL interference according to the background noise value;

If there is VDSL interference, the range of the VDSL interference band of the G.FAST port is determined.
The method of claim 2, wherein the step of acquiring a background noise value of the G.FAST port comprises:

The background noise value of each G.FAST port is obtained by polling.
The method of claim 2, wherein the step of acquiring a background noise value of the G.FAST port comprises:

The background noise value of the G.FAST port is obtained by random selection.
The method of claim 2, wherein the step of determining whether the G.FAST port has VDSL interference based on the background noise value comprises:

The background noise value is compared with a preset noise threshold, and when the background noise value exceeds a preset noise threshold, it is determined that there is VDSL interference.
The method of claim 2 wherein the step of determining a range of VDSL interference bands of said G.FAST port comprises:

The range of the VDSL interference band of the G.FAST port is determined by means of a filtering window.
The method according to any one of claims 1 to 6, wherein the step of controlling the opening and closing of the VDSL interference band of the G.FAST port according to the detected VDSL interference comprises:

Determining to turn off or turning on the VDSL interference band of the G.FAST port according to the detected VDSL interference and the link establishment condition of the G.FAST port, and controlling the closing or opening of the VDSL interference band of the G.FAST port.
The method according to claim 7, wherein after determining the VDSL interference band of the G.FAST port to be turned off according to the detected VDSL interference and the establishment of the G.FAST port, and controlling the VDSL to be turned off Before the interference band,

Determining whether the VDSL interference band to be turned off is being used, and if the VDSL interference band to be turned off is being used, setting the flag of the G.FAST port and dropping the G.FAST port The VDSL interference band is turned off according to the flag bit that is set.
A device for controlling a G.FAST port, comprising:

a detection unit configured to detect ultra-high speed digital subscriber line VDSL interference of the G.FAST port;

And a control unit configured to control opening and closing of the VDSL interference frequency band of the G.FAST port according to the VDSL interference detected by the detecting unit.
The apparatus of claim 9, wherein the detecting unit comprises:

An acquisition module configured to acquire a background noise value of the G.FAST port;

An analysis module configured to determine whether the G.FAST port has VDSL interference based on the background noise value, and if there is VDSL interference, determine a range of VDSL interference bands of the G.FAST port.
The device according to claim 10, wherein

The acquisition module is configured to obtain a background noise value of each G.FAST port by polling.
The device according to claim 10, wherein

The acquisition module is configured to acquire a background noise value of the G.FAST port by random selection.
The device according to claim 10, wherein

The analysis module is configured to compare the background noise value with a preset noise threshold, and determine that there is VDSL interference when the background noise value exceeds a preset noise threshold.
The device according to claim 10, wherein

The analysis module is configured to determine a range of VDSL interference bands of the G.FAST port by means of a filtering window.
A device according to any one of claims 9-14, wherein

The control unit is configured to determine to turn off or turn on the VDSL interference band of the G.FAST port according to the VDSL interference detected by the detecting unit and the link establishment condition of the G.FAST port, and control the G.FAST The VDSL interference band of the port is turned off or on.
The device according to claim 15, wherein

The control unit is configured to determine, after the VDSL interference band of the G.FAST port is to be turned off according to the VDSL interference detected by the detecting unit and the link establishment condition of the G.FAST port, and close the VDSL under control Before the interference band, determine whether the VDSL interference band to be turned off is being used, and if the VDSL interference band to be turned off is being used, set the flag of the G.FAST port, and at the G. When the FAST port is disconnected, the VDSL interference band is turned off according to the flag set.