CN112543039B

CN112543039B - Method, device and system for improving noise immunity of copper wire transmission network

Info

Publication number: CN112543039B
Application number: CN201910901691.5A
Authority: CN
Inventors: 葛尚斌; 方溢; 陈军俊
Original assignee: Nokia Shanghai Bell Co Ltd; Nokia Solutions and Networks Oy
Current assignee: Nokia Shanghai Bell Co Ltd; Nokia Solutions and Networks Oy
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2023-01-24
Anticipated expiration: 2039-09-23
Also published as: CN112543039A

Abstract

The application aims to provide a method, a device and a system for improving the noise immunity of a copper wire transmission network. According to the method and the device, relevant parameters of a line corresponding to customer premises equipment are detected, and the target noise margin and the upper limit value of the signal-to-noise ratio margin are adjusted based on the detection result, so that the target noise margin and the upper limit value of the signal-to-noise ratio margin are associated with online reconfiguration, and online dynamic adjustment of the target noise margin is achieved. Compared with the existing anti-noise technology, the scheme has the advantages of not influencing the current connection and improving the line stability, and simultaneously has the capability of enhancing the anti-noise performance of a copper wire transmission network, particularly a high-speed copper wire transmission network (such as G.FAST).

Description

Method, device and system for improving noise immunity of copper wire transmission network

Technical Field

The application relates to the field of communication, in particular to a technology for improving noise immunity of a copper wire transmission network.

Background

The development of copper wire transmission networks has led to the ever-increasing transmission capabilities of copper wire transmission networks. For example, the g.fast Access to subscriber terminals (Fast Access to subscriber terminals) network has been upgraded from the existing g.fast-106MHz to g.fast-212MHz, which makes the Access rate to exceed 1.8Gbit/s, indicating that the data transmission capability of copper wires is fully into the beyond 1Gbit/s era.

Disclosure of Invention

The application aims to provide a method, a device and a system for improving the noise immunity of a copper wire transmission network.

According to one embodiment of the application, a method for improving noise immunity of a copper wire transmission network at a customer premises equipment end is provided, wherein the method comprises the following steps:

detecting one or more first parameters of a line corresponding to the customer premises equipment based on a first detection period, wherein the first parameters comprise at least any one of a count of line initialization times, an FRA event count and an SRA event count;

if the value of at least one first parameter exceeds a first reference value corresponding to the first parameter, improving a target noise margin and a signal-to-noise ratio margin upper limit value of a line corresponding to the customer premises equipment based on a first adjustment value;

and sending a first EOC message to a central office corresponding to the customer premises equipment, wherein the first EOC message informs the central office to adjust the target noise margin and the upper limit value of the signal-to-noise ratio margin on line.

Optionally, the method further comprises:

detecting an actual noise margin value and a target noise margin value based on a second detection period;

if the difference value between the target noise margin value and the actual noise margin value is smaller than a second reference value and the target noise margin is larger than an initial target noise margin, reducing the target noise margin and the signal-to-noise ratio margin upper limit value of the line corresponding to the customer premises equipment based on a second adjustment value;

and sending a second EOC message to the central office corresponding to the customer premises equipment, wherein the second EOC message informs the central office to adjust the target noise margin and the upper limit value of the signal-to-noise ratio margin on line.

Optionally, the method further comprises:

and determining the first adjustment value and/or the second adjustment value according to the line state of the line corresponding to the customer premises equipment.

Optionally, the first adjustment value and/or the second adjustment value is a multiple of 3dB.

Optionally, the method further comprises:

determining whether to enable dynamic adjustment of a target noise margin and a signal-to-noise ratio margin upper limit value of an uplink data stream and/or a downlink data stream of a line corresponding to the customer premises equipment according to the use condition of the uplink data stream and/or the downlink data stream of the line corresponding to the customer premises equipment;

wherein, based on the first detection period, the step of detecting one or more first parameters comprises:

if the dynamic adjustment is selected to be enabled, one or more first parameters are detected based on a first detection period.

There is also provided, in accordance with another embodiment of the present application, a method of improving noise immunity in a copper transmission network at a central office, wherein the method includes the steps of:

acquiring a first EOC message transmitted by customer premises equipment, wherein the first EOC message informs the central office of online modification of a target noise margin and a signal-to-noise ratio margin upper limit value, the target noise margin and the signal-to-noise ratio margin upper limit value are determined by the customer premises equipment based on the detected one or more first parameters, and the first parameters comprise at least any one of a line initialization frequency count, an FRA event count and an SRA event count;

and according to the first EOC message, adjusting the target noise margin and the upper limit value of the signal-to-noise ratio margin on line.

Optionally, the method further comprises:

acquiring a second EOC message sent by the customer premises equipment, wherein the second EOC message informs the central office of modifying a target noise margin and a signal-to-noise ratio margin upper limit value on line, and the target noise margin and the signal-to-noise ratio margin upper limit value are determined by the customer premises equipment based on the detected actual noise margin value and the target noise margin value and in combination with an initial target noise margin;

and according to the second EOC message, adjusting the target noise margin and the upper limit value of the signal-to-noise ratio margin on line.

There is also provided, in accordance with another embodiment of the present application, a customer premises equipment for improving noise immunity in a copper transmission network, wherein the customer premises equipment includes:

means for detecting one or more first parameters of a line to which the customer premises equipment corresponds based on a first detection period, wherein the first parameters include at least any one of a count of line initialization times, an FRA event count, and an SRA event count;

a device for increasing a target noise margin and an upper limit value of a signal-to-noise ratio margin of a line corresponding to the customer premises equipment based on a first adjustment value if a value of at least one first parameter exceeds a first reference value corresponding to the first parameter;

and the device is used for sending a first EOC message to a central office corresponding to the customer premises equipment, wherein the first EOC message informs the central office to modify the target noise margin and the upper limit value of the signal-to-noise ratio margin on line.

Optionally, the customer premises equipment further comprises:

means for detecting an actual noise margin value and a target noise margin value based on a second detection period;

if the difference between the target noise margin value and the actual noise margin value is smaller than a second reference value and the target noise margin is larger than an initial target noise margin, reducing the target noise margin of the line corresponding to the customer premises equipment and the upper limit value of the signal-to-noise ratio margin based on a second adjustment value;

and sending a second EOC message to the central office corresponding to the customer premises equipment, wherein the second EOC message informs the central office to modify the target noise margin and the upper limit value of the signal-to-noise ratio margin online.

Optionally, the customer premises equipment further includes:

and the device is used for determining the first adjusting value and/or the second adjusting value according to the line state of the line corresponding to the customer premises equipment.

Optionally, the customer premises equipment further includes:

a device for determining whether to enable dynamic adjustment of a target noise margin and a signal-to-noise ratio margin upper limit value of an uplink data stream and/or a downlink data stream of a line corresponding to customer premises equipment according to the service conditions of the uplink data stream and/or the downlink data stream of the line corresponding to the customer premises equipment;

wherein the means for detecting one or more first parameters based on the first detection period is to:

There is also provided, in accordance with another embodiment of the present application, a central office for improving noise immunity in a copper transmission network, wherein the central office includes:

means for acquiring a first EOC message transmitted by customer premises equipment, wherein the first EOC message notifies the central office to modify a target noise margin and a signal-to-noise ratio margin upper limit online, the target noise margin and the signal-to-noise ratio margin upper limit being determined by the customer premises equipment based on the detected one or more first parameters, the first parameters including at least any one of a count of line initialization times, a FRA event count, and an SRA event count;

means for adjusting the target noise margin and the upper limit of the signal-to-noise margin online according to the first EOC message.

Optionally, the central office further comprises:

a device for acquiring a second EOC message sent by the customer premises equipment, wherein the second EOC message notifies the central office to modify a target noise margin and an upper limit value of a signal-to-noise ratio margin on line, and the target noise margin and the upper limit value of the signal-to-noise ratio margin are determined by the customer premises equipment based on the detected actual noise margin value and the target noise margin value and in combination with an initial target noise margin;

means for adjusting the target noise margin and the upper limit of the signal-to-noise margin online according to the second EOC message.

According to another embodiment of the present application, there is also provided a computer-readable storage medium having stored thereon computer instructions for causing an apparatus to perform at least the following:

detecting one or more first parameters of a line corresponding to customer premises equipment based on a first detection period, wherein the first parameters comprise at least any one of count of line initialization times, FRA event count and SRA event count;

acquiring a first EOC message transmitted by customer premises equipment, wherein the first EOC message informs the central office to modify a target noise margin and a signal-to-noise ratio margin upper limit value on line, the target noise margin and the signal-to-noise ratio margin upper limit value are determined by the customer premises equipment based on the detected one or more first parameters, and the first parameters comprise at least any one of a count of line initialization times, an FRA event count and an SRA event count;

There is also provided, in accordance with another embodiment of the present application, apparatus including:

at least one processor; and

at least one memory having a computer program stored thereon;

the at least one memory and the computer program are configured to, with the at least one processor, cause the apparatus to perform:

at least one processor; and

at least one memory having a computer program stored thereon;

There is also provided, in accordance with another embodiment of the present application, a system for improving noise immunity in a copper transmission network, including one or more customer premises equipment and one or more central offices corresponding to the customer premises equipment, wherein the customer premises equipment includes:

means for detecting one or more first parameters of a line to which the customer premises equipment corresponds based on a first detection period, wherein the first parameters include at least any one of a count of line initialization times, an FRA event count, and an SRA event count; and

a device for increasing a target noise margin and an upper limit value of a signal-to-noise ratio margin of a line corresponding to the customer premises equipment based on a first adjustment value if a value of at least one first parameter exceeds a first reference value corresponding to the first parameter; and

the device is used for sending a first EOC message to a central office corresponding to the customer premises equipment, wherein the first EOC message informs the central office to modify the target noise margin and the upper limit value of the signal-to-noise ratio margin on line;

wherein the central office comprises:

means for acquiring a first EOC message transmitted by customer premises equipment, wherein the first EOC message notifies the central office to modify a target noise margin and a signal-to-noise ratio margin upper limit online, the target noise margin and the signal-to-noise ratio margin upper limit being determined by the customer premises equipment based on the detected one or more first parameters, the first parameters including at least any one of a count of line initialization times, a FRA event count, and an SRA event count; and

According to the method and the device, the relevant parameters of the line corresponding to the customer premises equipment are detected, and the Target Noise Margin (Target Noise Margin) and the signal to Noise ratio Margin upper limit value (SNR Margin Up) are adjusted based on the detection result, so that the Target Noise Margin and the signal to Noise ratio Margin upper limit value are associated with online reconfiguration, and the online dynamic adjustment of the Target Noise Margin is realized. Compared with the existing anti-noise technology, the scheme has the advantages of not influencing the current connection and improving the line stability, and simultaneously has the capability of enhancing the anti-noise performance of a copper wire transmission network, particularly a high-speed copper wire transmission network (such as G.FAST).

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 illustrates a flow chart of a method for improving noise immunity of a copper transmission network at a customer premises equipment end according to an example of the present application;

fig. 2 shows a flow chart of a method for improving noise immunity of a copper transmission network at a customer premises equipment end according to an example of the application;

FIG. 3 illustrates a flow chart of a method for improving noise immunity in a copper transmission network at a central office according to an example of the present application;

FIG. 4 illustrates a flow chart of a method for improving noise immunity in a copper transmission network at a central office according to one example of the present application;

figure 5 shows a schematic diagram of a customer premises equipment for improving noise immunity in a copper transmission network according to an example of the present application;

figure 6 illustrates a schematic diagram of customer premises equipment for improving noise immunity in a copper transmission network according to an example of the present application;

FIG. 7 illustrates a central office diagram for improving noise immunity in a copper transmission network according to one example of the present application;

FIG. 8 illustrates a central office diagram for improving noise immunity in a copper transmission network according to one example of the present application;

fig. 9 illustrates a schematic diagram of a system for improving noise immunity in a copper transmission network according to an example of the present application.

The same or similar reference numbers in the drawings identify the same or similar elements.

Detailed Description

Copper wire transmission networks are subject to noise interference. The larger the bandwidth of the copper wire transmission network, the higher the possibility of being interfered by noise, and even causing the line to drop when the noise interference is serious.

The anti-noise technology mainly includes SRA (Seamless Rate adaptation) and FRA (Fast Rate adaptation) technologies to prevent the copper transmission network line from dropping due to noise interference.

The working principle of the SRA is to maintain the actual signal-to-noise ratio margin based on the target signal-to-noise ratio margin by dynamically adjusting the link rate of the line, so as to provide protection for stable transmission of the line. The Signal-to-Noise Ratio margin (SNR margin or SNRM) is a parameter used to measure the quality of service of a network, which represents the ability of the network to operate without errors in the case of a Noise surge, and is the difference between two Signal-to-Noise ratios, one is the Signal-to-Noise Ratio (SNR) of the user's current network and one is the Signal-to-Noise Ratio that just maintains a reliable connection at the current speed. The target signal-to-noise ratio margin is a fixed value, and if the target signal-to-noise ratio margin is set too low, the noise resistance will be reduced, and the line transmission is unstable. If the setting is too high, the line rate will drop and the user experience will be poor. If the user modifies the target signal-to-noise margin, the CPE (Customer Premise Equipment) and CO (Central Office) will retrain.

The present application finds that SRA requires that the noise last for a certain time before triggering. When sudden strong noise is encountered, the link will fail due to too late processing. FRA has the characteristic of fast triggering, but it momentarily drops the line rate to a lower value and then slowly adjusts the rate through SRA. If FRA occurs frequently, the network rate will fluctuate greatly and the user experience will be worse.

However, frequent triggering of SRA and FRA will cause line rate instability, and especially when the noise level exceeds a certain level, SRA and FRA cannot solve the problem of noise in the line, and even cause the line to be unable to build a chain. For example, when CPE is deployed on short-haul lines (e.g., lines not exceeding 50 meters), the noise level exceeds the capacity limits of SRA and FRA because strong noise cannot be attenuated by the length of the cable, such that the CPE is repeatedly disconnected and cannot operate properly online.

The present application is described in further detail below with reference to the attached figures.

Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations as a sequential process, many of the operations can be performed in parallel, concurrently, or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.

The term "customer premises equipment" as used herein refers to equipment at the end user premises, and may be considered synonymous with and sometimes referred to hereinafter as: a client, subscriber, user, remote station, access terminal, receiver, etc. In one embodiment, the customer premises equipment is a telephone, a cable television set-top box, or a Digital Subscriber Line (DSL) access terminal, etc., as terminal equipment for telephony or other services.

Similarly, the term "central office" as used herein refers to a communication node that connects a subscriber to a switching network of a communications carrier. In one embodiment, the central office is a Digital Subscriber Line Access Multiplexer (DSLAM).

Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Those skilled in the art will appreciate that the present application may be applied to any type of copper transmission network. In one embodiment, the present application is applicable to high speed copper wire transmission networks, such as g.fast networks.

Fig. 1 shows a flow chart of a method for improving noise immunity of a copper transmission network at a customer premises equipment end according to an example of the application.

Specifically, in step S11, the customer premises equipment detects one or more first parameters of a line corresponding to the customer premises equipment based on a first detection period, where the first parameters include at least any one of a count of line initialization times, an FRA event count, and an SRA event count.

The first detection period may adopt a default setting of the system, or an operator may configure the customer premises equipment through the remote management server. When the operator carries out configuration, the remote management server sends the set first detection period to the customer premises equipment, and the customer premises equipment returns confirmation information so as to confirm the configuration. In one embodiment, the first detection period may be configured to be any value from 1 to 1440 minutes; for example, in one embodiment, the first detection period may be set to 15 minutes.

The first detection period is used for detecting one or more first parameters of a line corresponding to the customer premises equipment in each time interval set by the first detection period; here, the line corresponding to the first parameter includes an uplink data stream, a downlink data stream, or an uplink data stream and a downlink data stream, and the customer premises equipment may detect only the first parameter corresponding to the uplink data stream, may detect only the first parameter corresponding to the downlink data stream, or simultaneously detect the first parameter corresponding to the uplink data stream and the downlink data stream. The customer premises equipment may detect, according to a setting, based on a first detection period, one or more first parameters corresponding to an upstream data stream of a line corresponding to the customer premises equipment, or one or more first parameters corresponding to a downstream data stream of a line corresponding to the customer premises equipment, or one or more first parameters corresponding to an upstream data stream and a downstream data stream of a line corresponding to the customer premises equipment.

Here, the detected direction of the data stream, that is, the uplink data stream, the downlink data stream, or both the uplink data stream and the downlink data stream, may be set by default, or may be configured by the operator through the remote management server. When the operator carries out configuration, the remote management server sends the set direction of the detected data stream to the customer premises equipment, and the customer premises equipment returns confirmation information so as to confirm the configuration.

In an embodiment, the method further includes step S10 (not shown), where in step S10, the customer premises equipment determines whether to enable dynamic adjustment of a target noise margin and an upper limit value of a signal-to-noise ratio margin for an uplink data stream and/or a downlink data stream of a line corresponding to the customer premises equipment according to a usage situation of the uplink data stream and/or the downlink data stream of the line corresponding to the customer premises equipment; then, if the dynamic adjustment is selected to be enabled, in step S11, the customer premises equipment detects one or more first parameters based on a first detection period.

Here, the service conditions of the upstream data stream and/or the downstream data stream of the line corresponding to the customer premises equipment include a size of a data flow, a stability of the data stream, a requirement of the data stream, and the like, and the customer premises equipment may perform dynamic adjustment on the upstream data stream or the downstream data stream alone, may also perform dynamic adjustment on the upstream data stream and the downstream data stream at the same time, or may also disable the dynamic adjustment.

That is, the dynamic adjustment manner determined in step S10 includes four cases, which cover whether to enable dynamic adjustment and the direction corresponding to the dynamic adjustment:

a. forbidding dynamic adjustment of the target noise margin and the upper limit value of the signal-to-noise ratio margin;

b. starting dynamic adjustment of the upper limit value of the downlink target noise margin and the signal-to-noise ratio margin;

c. starting dynamic adjustment of an uplink target noise margin and an upper limit value of a signal-to-noise ratio margin;

d. and starting dynamic adjustment of the upper limit values of the downlink and uplink target noise margins and the signal-to-noise ratio margin.

And when the customer premises equipment selects to start dynamic adjustment, the customer premises equipment detects one or more corresponding first parameters for the uplink data stream, the downlink data stream or the uplink and downlink data stream based on the first detection period so as to execute dynamic adjustment of the data streams in different directions.

In step S12, if the value of the at least one first parameter exceeds the first reference value corresponding to the first parameter, the customer premises equipment increases the target noise margin and the upper limit of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment based on the first adjustment value.

The first reference value may adopt a default setting of the system, or an operator may configure the customer premises equipment through the remote management server. When the operator carries out configuration, the remote management server sends the set first reference value to the customer premises equipment, and the customer premises equipment returns confirmation information so as to confirm the configuration. In one embodiment, the first reference value may be configured to be any value from 1 to 60 times; for example, in one embodiment, the first reference value may be set to 3 times.

For example, if the value of any one or more of the line initialization frequency count, the FRA event count, and the SRA event count exceeds 3 times, it is determined that the line corresponding to the customer premises equipment satisfies the condition for performing dynamic adjustment, and it is necessary to increase the target noise margin and the upper limit of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment.

In an embodiment, the first parameter may also be determined according to a line status of a line corresponding to the customer premises equipment, where the line status includes, but is not limited to, a size of a data traffic, a stability of a data stream, a demand of the data stream, and the like.

The first adjustment value may be based on a default setting, and in one embodiment, the first adjustment value may be set to n decibels.

In an embodiment, the first adjustment value may be determined according to a line status of a line corresponding to the customer premises equipment, where the line status includes, but is not limited to, a size of a data traffic, a stability of a data stream, a requirement of the data stream, and the like.

In one embodiment, the first adjustment value may be determined by observing the magnitude of the change in the actual signal-to-noise margin.

Preferably, in one embodiment, the first adjustment value may be set to a multiple of 3dB, such as 3dB,6dB, etc.

For example, if the first adjustment value is 3dB, the customer premises equipment increases the target noise margin and the upper limit value of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment by 3dB. Here, the reason for using 3dB as the first adjustment value is that:

first, from the relationship between Bit (Bit) and signal-to-noise ratio:

in an xDSL system, 3dB of signal-to-noise ratio is consumed to carry 1 bit, the signal-to-noise ratio of one sub-channel is set as SNR, and the signal-to-noise ratio margin is SNRM, then the relationship between the bit and the SNR can be represented by the following formula:

SNR＝S ₀ +3 + bit SNRM (formula 1)

Wherein S is ₀ Representing the minimum signal-to-noise ratio required for the subchannel to carry 2 bits. At least 4 points, i.e. 2 bits, can be placed due to constellation modulation (constellation).

Wherein xDSL is a generic term for various types of DSL (Digital Subscriber Line) Digital Subscriber lines, including ADSL, RADSL, VDSL, SDSL, IDSL, HDSL, and so on.

As can be seen from equation 1 above, there is a balanced relationship between the line rate and the noise margin under given line conditions. The larger the required signal-to-noise margin, the lower the line rate obtained.

Then, from the relationship of the line rate and the signal-to-noise margin:

the number of bits that each subchannel can carry will be reduced or increased by one for every 3dB increase or reduction in the signal-to-noise margin when the SNR is unchanged. Taking the example of a g.fast 212MHz network for synchronous rates close to 2Gbps, the maximum variation per 3dB modification is close to 200Mbps when all channels are used.

The calculation method is as follows:

maximum change in line rate =4096 (number of subchannels) x 48000 (baud rate) x 1 (bits)

Here, it will be appreciated by those skilled in the art that other decibel numbers, such as 1db,2db,4db, etc., are equally applicable to the present application.

In step S13, the customer premises equipment sends a first EOC message to a central office corresponding to the customer premises equipment, where the first EOC message notifies the central office to adjust the target noise margin and the upper limit of the signal-to-noise ratio margin on line.

Here, the customer premises equipment sends a first EOC message to a central office corresponding to the customer premises equipment through an EOC (Embedded Operations Channel) operation Channel, so as to notify the central office to adjust the target noise margin and the upper limit value of the signal-to-noise ratio margin online.

Accordingly, the central office triggers an on-line reconfiguration based on the first EOC message to adjust line rate, actual noise margin, and other parameters associated with the line, without retraining the line and causing a line drop.

Fig. 2 shows a flow chart of a method for improving noise immunity of a copper transmission network at a customer premises equipment end according to an example of the application.

Specifically, step S11, step S12 and step S13 in fig. 2 are the same as or similar to the corresponding steps in fig. 1, and are therefore not repeated herein and are included herein by way of reference.

In step S14, the customer premises equipment detects an actual noise margin value and a target noise margin value based on a second detection period.

The second detection period may adopt a default setting of the system, or an operator may configure the customer premises equipment through the remote management server. When the operator performs configuration, the remote management server sends the set second detection period to the customer premises equipment, and the customer premises equipment returns confirmation information so as to confirm the configuration. In one embodiment, the second detection period may be configured to be any value from 1 to 1440 minutes; for example, in one embodiment, the second detection period may be set to 5 minutes.

And the second detection period is used for detecting the actual noise margin value and the target noise margin value of the line corresponding to the customer premises equipment in each time interval set by the second detection period.

In one embodiment, since the target noise margin value is constant, the customer premises equipment detects the actual noise margin value only during each second detection period.

In one embodiment, the directions of the detected actual noise margin value and the target noise margin value are the same as the direction corresponding to the detected first parameter.

In step S15, if the difference between the target noise margin value and the actual noise margin value is smaller than a second reference value, and the target noise margin is larger than an initial target noise margin, the customer premises equipment reduces the target noise margin and the upper limit of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment based on a second adjustment value.

Here, the customer premises equipment calculates a difference between the target noise margin value and the actual noise margin value in each second detection period; if the difference is smaller than a second reference value (i.e. indicating that the target noise margin value can be decreased), and the target noise margin is larger than an initial target noise margin (i.e. indicating that the target noise margin value has been increased), it is considered that there is no strong noise interference in the current environment. And the customer premises equipment reduces the target noise margin and the signal-to-noise ratio margin upper limit value of the line corresponding to the customer premises equipment based on the second adjustment value.

The second adjustment value may be based on a default setting, and in one embodiment, the second adjustment value may be set to n decibels.

In an embodiment, the second adjustment value may be determined according to a line status of a line corresponding to the customer premises equipment, where the line status includes, but is not limited to, a size of a data traffic, a stability of a data stream, a requirement of the data stream, and the like.

In one embodiment, the second adjustment value may be determined by observing the magnitude of the change in the actual signal-to-noise margin.

Preferably, in one embodiment, the second adjustment value may be set to a multiple of 3dB, such as 3dB,6dB, etc.

Wherein the second adjustment value may or may not be identical to the first adjustment value. In one embodiment, the second adjustment value may be identical to the first adjustment value, thereby restoring the original line rate.

For example, if the first adjustment value is 3dB, if the value of at least one first parameter exceeds the first reference value corresponding to the first parameter, the customer premises equipment increases the target noise margin and the upper limit of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment by 3dB, and if the difference between the target noise margin and the actual noise margin is smaller than the second reference value and the target noise margin is larger than the initial target noise margin, the customer premises equipment decreases the target noise margin and the upper limit of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment by 3dB.

In step S16, the customer premises equipment sends a second EOC message to the central office corresponding to the customer premises equipment, where the second EOC message notifies the central office to adjust the target noise margin and the upper limit of the signal-to-noise ratio margin on line.

Here, the customer premises equipment sends a second EOC message to a central office corresponding to the customer premises equipment through an EOC message channel to notify the central office to adjust the target noise margin and the upper limit value of the signal-to-noise ratio margin on line.

Accordingly, the central office triggers an on-line reconfiguration based on the second EOC message to adjust the line rate, the actual noise margin, and other parameters associated with the line, without retraining the line and causing a line drop.

Here, the first EOC message and/or the second EOC message may be automatically triggered based on a change in parameter values of the target noise margin and the signal-to-noise ratio margin upper limit value. An example format of a net EOC message (Clear EOC message) for uplink and downlink data flows is shown below:

1. a downlink data stream target noise margin and a downlink data stream signal-to-noise ratio margin upper limit value:

message [ net Eoc ] notification-notification of upper limit values of target noise margin and signal-to-noise ratio margin of downlink data stream

TABLE 1 downstream Net EOC Notification

Message [ net Eoc ] confirmation of upper limit value notification of target noise margin and signal-to-noise ratio margin of downlink data stream

Table 2 downstream net EOC acknowledgement

2. The uplink data flow target noise margin and the uplink data flow signal-to-noise ratio margin upper limit value:

uplink data flow target noise margin and uplink data flow signal-to-noise ratio margin upper limit value notification-message [ net Eoc ] -notification

TABLE 3 upstream Net EOC Notification

Uplink data stream target noise margin and uplink data stream signal-to-noise ratio margin upper limit value notification-message [ net Eoc ] -, confirmation

Table 4 upstream net EOC acknowledgement

Fig. 3 illustrates a flow chart of a method for improving noise immunity in a copper transmission network at a central office according to an example of the present application.

Specifically, in step S21, the central office acquires a first EOC message transmitted by a customer premises equipment, where the first EOC message notifies the central office to modify a target noise margin and a signal-to-noise ratio margin upper limit value online, where the target noise margin and the signal-to-noise ratio margin upper limit value are determined by the customer premises equipment based on the detected one or more first parameters, and the first parameters include at least any one of a count of line initialization times, a FRA event count, and an SRA event count.

In step S22, the central office adjusts the target noise margin and the upper limit of the snr margin on-line according to the first EOC message.

Here, the first EOC message includes the adjusted target noise margin and the upper limit value of the signal-to-noise ratio margin, so that the central office triggers online reconfiguration to adjust the line rate, the actual noise margin, and other parameters related to the line based on the first EOC message, and the line is not retrained and the line drop is not caused.

Fig. 4 illustrates a flow chart of a method for improving noise immunity in a copper transmission network at a central office according to an example of the present application.

Specifically, step S21 and step S22 in fig. 4 are the same as or similar to the corresponding steps in fig. 3, and therefore are not repeated herein and are included herein by way of reference.

In step S23, the central office obtains a second EOC message sent by the customer premises equipment, where the second EOC message notifies the central office to modify a target noise margin and an upper limit of a signal-to-noise ratio margin online, and the target noise margin and the upper limit of the signal-to-noise ratio margin are determined by the customer premises equipment based on the detected actual noise margin value and the target noise margin value, and in combination with an initial target noise margin.

In step S24, the central office adjusts the target noise margin and the upper limit of the snr margin on-line according to the second EOC message.

Here, the second EOC message includes the adjusted target noise margin and the upper limit of the signal-to-noise ratio margin, so that the central office triggers online reconfiguration to adjust the line rate, the actual noise margin and other parameters related to the line based on the second EOC message, and the line is not retrained and the line drop is not caused.

Figure 5 shows a schematic diagram of customer premises equipment for improving noise immunity in a copper transmission network according to an example of the present application.

In particular, the customer premises equipment 10 comprises a device 101, a device 102 and a device 103.

The apparatus 101 detects one or more first parameters of a line corresponding to the customer premises equipment based on a first detection period, where the first parameters include at least any one of a count of line initialization times, an FRA event count, and an SRA event count.

Here, the detected direction of the data stream, that is, the uplink data stream, the downlink data stream, or both the uplink data stream and the downlink data stream, may be set by default, or may be configured by the operator through the remote management server. When the operator performs configuration, the remote management server sends the set direction of the detected data stream to the customer premises equipment, and the customer premises equipment returns confirmation information so as to confirm the configuration.

In an embodiment, the customer premises equipment further includes a device 100 (not shown), where the device 100 determines whether to enable dynamic adjustment of a target noise margin and an upper limit value of a signal-to-noise ratio margin for an upstream data stream and/or a downstream data stream of a line corresponding to the customer premises equipment according to a usage of the upstream data stream and/or the downstream data stream of the line corresponding to the customer premises equipment; then, if the dynamic adjustment is selected to be enabled, the device 101 detects one or more first parameters based on the first detection period.

That is, the dynamic adjustment manner determined by the apparatus 100 includes four cases, which cover whether to enable the dynamic adjustment and the direction corresponding to the dynamic adjustment:

If the value of at least one first parameter exceeds the first reference value corresponding to the first parameter, the device 102 increases the target noise margin and the upper limit value of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment based on the first adjustment value.

For example, if the first adjustment value is 3dB, the customer premises equipment increases the target noise margin and the upper limit value of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment by 3dB.

The device 103 sends a first EOC message to a central office corresponding to the customer premises equipment, where the first EOC message notifies the central office to adjust the target noise margin and the upper limit value of the signal-to-noise ratio margin online.

Here, the device 103 sends a first EOC message to a central office corresponding to the customer premises equipment through an EOC (Embedded operation Channel) operation Channel, so as to notify the central office to adjust the target noise margin and the upper limit value of the signal-to-noise ratio margin online.

Figure 6 illustrates a schematic diagram of customer premises equipment for improving noise immunity in a copper transmission network according to an example of the present application.

In particular, the customer premises equipment 10 comprises a device 101, a device 102, a device 103, a device 104, a device 105 and a device 106.

The

devices

101, 102 and 103 in fig. 6 are the same as or similar to the corresponding devices in fig. 5, and therefore are not described herein again and are included herein by reference.

The device 104 detects an actual noise margin value and a target noise margin value based on the second detection period.

The second detection period is used for detecting an actual noise margin value and a target noise margin value of a line corresponding to the customer premises equipment within each time interval set by the second detection period.

If the difference between the target noise margin value and the actual noise margin value is smaller than a second reference value and the target noise margin is larger than the initial target noise margin, the device 105 reduces the target noise margin and the upper limit of the signal-to-noise ratio margin of the line corresponding to the customer premises equipment based on a second adjustment value.

The device 106 sends a second EOC message to the central office corresponding to the customer premises equipment, where the second EOC message notifies the central office to adjust the target noise margin and the upper limit of the signal-to-noise ratio margin online.

Here, the device 106 sends a second EOC message to a central office corresponding to the customer premises equipment through an EOC message channel to notify the central office to adjust the target noise margin and the upper limit value of the signal-to-noise ratio margin online.

Fig. 7 illustrates a central office diagram for improving noise immunity in a copper transmission network according to one example of the present application.

In particular, the central office 20 comprises means 201 and means 202.

Wherein the apparatus 201 acquires a first EOC message transmitted by a customer premises equipment, wherein the first EOC message informs the central office to modify online a target noise margin and a signal-to-noise ratio margin upper limit value, the target noise margin and the signal-to-noise ratio margin upper limit value being determined by the customer premises equipment based on the detected one or more first parameters, the first parameters including at least any one of a count of line initialization times, a FRA event count, and a SRA event count.

The device 202 adjusts the target noise margin and the snr margin upper limit on-line based on the first EOC message.

Here, the first EOC message includes the adjusted target noise margin and the upper limit of the signal-to-noise ratio margin, so that the central office triggers online reconfiguration to adjust the line rate, the actual noise margin and other parameters related to the line based on the first EOC message, and the line is not retrained and the line drop is not caused.

Fig. 8 illustrates a central office diagram for improving noise immunity in a copper transmission network according to one example of the present application.

Specifically, the central office 20 includes a device 201, a device 202, a device 203, and a device 204.

The

devices

201 and 202 in fig. 8 are the same as or similar to the corresponding devices in fig. 7, and therefore are not described herein again and are included herein by reference.

The device 203 acquires a second EOC message sent by the customer premises equipment, where the second EOC message notifies the central office to modify a target noise margin and an upper limit of a signal-to-noise ratio margin online, and the target noise margin and the upper limit of the signal-to-noise ratio margin are determined by the customer premises equipment based on the detected actual noise margin value and the target noise margin value, and in combination with an initial target noise margin.

The device 204 adjusts the target noise margin and the upper limit of the snr margin on-line according to the second EOC message.

The system comprises a central office CO and a plurality of customer premises equipments CPE 1, CPE 2, CPE 3 and CPE4, wherein the central office CO connects the customer premises equipments to a switching network connected with a communication operator. Here, the customer premises equipment is the customer premises equipment according to any of the above embodiments, and the central office is the central office according to any of the above embodiments.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

It should be noted that the present application may be implemented in software and/or a combination of software and hardware, for example, as an Application Specific Integrated Circuit (ASIC), a general purpose computer or any other similar hardware device. In one embodiment, the software programs of the present application may be executed by a processor to implement the steps or functions described above. Likewise, the software programs (including associated data structures) of the present application may be stored in a computer readable recording medium, such as RAM memory, magnetic or optical drive or diskette and the like. Further, some of the steps or functions of the present application may be implemented in hardware, for example, as circuitry that cooperates with the processor to perform various steps or functions.

In addition, some of the present application may be implemented as a computer program product, such as computer program instructions, which when executed by a computer, may invoke or provide methods and/or techniques in accordance with the present application through the operation of the computer. Those skilled in the art will appreciate that the form in which the computer program instructions reside on a computer-readable medium includes, but is not limited to, source files, executable files, installation package files, and the like, and that the manner in which the computer program instructions are executed by a computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Computer-readable media herein can be any available computer-readable storage media or communication media that can be accessed by a computer.

Communication media includes media by which communication signals, including, for example, computer readable instructions, data structures, program modules, or other data, are transmitted from one system to another. Communication media may include conductive transmission media such as cables and wires (e.g., fiber optics, coaxial, etc.) and wireless (non-conductive transmission) media capable of propagating energy waves, such as acoustic, electromagnetic, RF, microwave, and infrared. Computer readable instructions, data structures, program modules, or other data may be embodied in a modulated data signal, for example, in a wireless medium such as a carrier wave or similar mechanism such as is embodied as part of spread spectrum techniques. The term "modulated data signal" means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. The modulation may be analog, digital or hybrid modulation techniques.

By way of example, and not limitation, computer-readable storage media may include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data. For example, computer-readable storage media include, but are not limited to, volatile memory such as random access memory (RAM, DRAM, SRAM); and non-volatile memory such as flash memory, various read-only memories (ROM, PROM, EPROM, EEPROM), magnetic and ferromagnetic/ferroelectric memories (MRAM, feRAM); and magnetic and optical storage devices (hard disk, tape, CD, DVD); or other now known media or later developed that can store computer-readable information/data for use by a computer system.

An embodiment according to the present application herein comprises an apparatus comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the apparatus to perform a method and/or solution according to embodiments of the present application as described above.

It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.

Claims

1. A method of improving noise immunity in a copper transmission network at a customer premises equipment, wherein the method comprises the steps of:

detecting one or more first parameters of a line corresponding to the customer premises equipment based on a first detection period, wherein the first parameters include at least any one of a count of line initialization times, a Fast Rate Adaptation (FRA) event count, and a Seamless Rate Adaptation (SRA) event count;

if the value of at least one first parameter exceeds a first reference value corresponding to the first parameter, based on a first adjustment value, improving a target noise margin value and a signal-to-noise ratio margin upper limit value of a line corresponding to the customer premises equipment;

and sending a first Embedded Operation Channel (EOC) message to a central office corresponding to the customer premises equipment, wherein the first EOC message informs the central office to adjust the target noise margin value and the signal-to-noise margin upper limit value on line.

2. The method of claim 1, wherein the method further comprises:

and determining the first adjustment value according to the line state of the line corresponding to the customer premises equipment.

3. The method of claim 1, wherein the first adjustment value is a multiple of 3dB.

4. The method of claim 1, wherein the method further comprises:

detecting an actual noise margin value and a current target noise margin value based on a second detection period;

if the difference value between the current target noise margin value and the actual noise margin value is smaller than a second reference value and the current target noise margin value is larger than an initial target noise margin value, reducing the target noise margin value and the signal-to-noise ratio margin upper limit value of the line corresponding to the customer premises equipment based on a second adjustment value;

and sending a second EOC message to the central office corresponding to the customer premises equipment, wherein the second EOC message informs the central office to adjust the target noise margin value and the upper limit value of the signal-to-noise ratio margin on line.

5. The method of claim 4, wherein the method further comprises:

and determining the second adjustment value according to the line state of the line corresponding to the customer premises equipment.

6. The method of claim 4, wherein the second adjustment value is a multiple of 3dB.

7. The method of claim 1, wherein the method further comprises:

determining whether to enable dynamic adjustment of a target noise margin value and a signal-to-noise ratio margin upper limit value of an uplink data stream and/or a downlink data stream of a line corresponding to customer premises equipment according to the use condition of the uplink data stream and/or the downlink data stream of the line corresponding to the customer premises equipment;

the method comprises the following steps of detecting one or more first parameters of a line corresponding to the customer premises equipment based on a first detection period:

and if the dynamic adjustment is selected to be started, detecting the one or more first parameters based on the first detection period.

8. A method for improving noise immunity in a copper transmission network at a central office, wherein the method comprises the steps of:

acquiring a first Embedded Operation Channel (EOC) message sent by customer premises equipment, wherein the first EOC message informs a central office of modifying a target noise margin value and a signal-to-noise ratio margin upper limit value of a line corresponding to the customer premises equipment on line;

wherein, when a value of a first parameter of a line corresponding to at least one customer premises equipment detected based on a first detection period exceeds a first reference value corresponding to the first parameter, the target noise margin value and the signal-to-noise margin upper limit value of the customer premises equipment are increased based on a first adjustment value, thereby triggering the first EOC message, wherein the first parameter includes at least any one of a count of line initialization times, a Fast Rate Adaptation (FRA) event count, and a Seamless Rate Adaptation (SRA) event count;

and according to the first EOC message, adjusting the target noise margin value and the signal-to-noise margin upper limit value on line.

9. The method of claim 8, wherein the method further comprises:

acquiring a second EOC message sent by the customer premises equipment, wherein the second EOC message informs the central office of modifying the target noise margin value and the signal-to-noise ratio margin upper limit value of the customer premises equipment on line;

wherein, when a difference between a current target noise margin value and an actual noise margin value of the customer premises equipment detected based on a second detection period is less than a second reference value and the current target noise margin value is greater than an initial target noise margin value, the target noise margin value and the signal-to-noise margin upper limit value of the customer premises equipment are lowered based on a second adjustment value, thereby triggering the second EOC message;

and according to the second EOC message, adjusting the target noise margin value and the signal-to-noise margin upper limit value on line.

10. A customer premises equipment for improving noise immunity in a copper transmission network, wherein the customer premises equipment comprises:

means for detecting one or more first parameters of a line to which the customer premises equipment corresponds based on a first detection period, wherein the first parameters include at least any one of a count of line initialization times, a Fast Rate Adaptation (FRA) event count, and a Seamless Rate Adaptation (SRA) event count;

if the value of at least one first parameter exceeds a first reference value corresponding to the first parameter, based on a first adjustment value, increasing a target noise margin value and a signal-to-noise ratio margin upper limit value of a line corresponding to the customer premises equipment;

means for sending a first Embedded Operations Channel (EOC) message to a central office corresponding to the customer premises equipment, wherein the first EOC message notifies the central office to modify the target noise margin value and the signal-to-noise margin upper limit value online.

11. The customer premises equipment of claim 10, wherein the customer premises equipment further comprises:

and the device is used for determining the first adjusting value according to the line state of the line corresponding to the customer premises equipment.

12. The customer premises equipment of claim 10, wherein the first adjustment value is a multiple of 3dB.

13. The customer premises equipment of claim 10, wherein the customer premises equipment further comprises:

means for detecting an actual noise margin value and a current target noise margin value based on a second detection period;

if the difference between the current target noise margin value and the actual noise margin value is smaller than a second reference value and the current target noise margin value is larger than an initial target noise margin value, reducing the target noise margin value and the signal-to-noise ratio margin upper limit value of the line corresponding to the customer premises equipment based on a second adjustment value;

and sending a second EOC message to the central office corresponding to the customer premises equipment, wherein the second EOC message informs the central office to modify the target noise margin value and the upper limit value of the signal-to-noise ratio margin online.

14. The customer premises equipment of claim 13, wherein the customer premises equipment further comprises:

and the device is used for determining the second adjusting value according to the line state of the line corresponding to the customer premises equipment.

15. The customer premises equipment of claim 13, wherein the second adjustment value is a multiple of 3dB.

16. The customer premises equipment of claim 10, wherein the customer premises equipment further comprises:

the device is used for determining whether to start dynamic adjustment on the target noise margin value and the signal-to-noise ratio margin upper limit value of the uplink data stream and/or the downlink data stream of the line corresponding to the customer premises equipment according to the using condition of the uplink data stream and/or the downlink data stream of the line corresponding to the customer premises equipment;

the device for detecting one or more first parameters of the line corresponding to the customer premises equipment based on the first detection period is configured to:

17. A central office for improving noise immunity in a copper transmission network, wherein the central office comprises:

the device comprises a device for acquiring a first Embedded Operation Channel (EOC) message sent by customer premises equipment, wherein the first EOC message informs a central office of modifying a target noise margin value and a signal-to-noise ratio margin upper limit value of a line corresponding to the customer premises equipment on line;

means for adjusting the target noise margin value and the signal-to-noise margin upper limit value online according to the first EOC message.

18. The central office of claim 17, wherein the central office further comprises:

the device is used for acquiring a second EOC message sent by the customer premises equipment, wherein the second EOC message informs the central office of modifying the target noise margin value and the signal-to-noise margin upper limit value of the customer premises equipment on line;

means for adjusting the target noise margin value and the signal-to-noise margin upper limit value online according to the second EOC message.

19. A computer-readable storage medium having computer program instructions stored thereon that cause an apparatus to at least perform:

detecting one or more first parameters of a line corresponding to customer premises equipment based on a first detection period, wherein the first parameters comprise at least any one of a count of line initialization times, a Fast Rate Adaptation (FRA) event count and a Seamless Rate Adaptation (SRA) event count;

and sending a first Embedded Operation Channel (EOC) message to a central office corresponding to the customer premises equipment, wherein the first EOC message informs the central office to adjust the target noise margin value and the signal-to-noise ratio margin upper limit value on line.

20. A computer-readable storage medium having computer program instructions stored thereon that cause an apparatus to at least perform:

21. An apparatus for improving noise immunity in a copper transmission network, the apparatus comprising:

at least one processor; and

at least one memory having computer program instructions stored thereon;

the at least one memory and the computer program instructions are configured to, with the at least one processor, cause the apparatus to perform:

22. An apparatus for improving noise immunity in a copper transmission network, the apparatus comprising:

at least one processor; and

at least one memory having computer program instructions stored thereon;

wherein, when a value of a first parameter of a line corresponding to the customer premises equipment, detected based on a first detection period, exceeds a first reference value corresponding to the first parameter, the target noise margin value and the signal-to-noise ratio margin upper limit value of the customer premises equipment are increased based on a first adjustment value, thereby triggering the first EOC message, wherein the first parameter includes at least any one of a count of line initialization times, a Fast Rate Adaptation (FRA) event count, and a Seamless Rate Adaptation (SRA) event count;

23. A system for improving noise immunity of a copper transmission network, comprising one or more customer premises equipment and one or more central offices corresponding to the customer premises equipment, wherein the customer premises equipment comprises:

means for detecting one or more first parameters of a line to which the customer premises equipment corresponds based on a first detection period, wherein the first parameters include at least any one of a count of line initialization times, a Fast Rate Adaptation (FRA) event count, and a Seamless Rate Adaptation (SRA) event count; and

a device for increasing a target noise margin value and a signal-to-noise ratio margin upper limit value of a line corresponding to the customer premises equipment based on a first adjustment value if a value of at least one first parameter exceeds a first reference value corresponding to the first parameter; and

means for sending a first Embedded Operations Channel (EOC) message to a central office corresponding to the customer premises equipment, wherein the first EOC message notifies the central office to modify the target noise margin value and the signal-to-noise margin upper limit value online;

wherein the central office comprises:

the device is used for acquiring the first EOC message sent by customer premises equipment, wherein the first EOC message informs the central office of modifying the target noise margin value and the signal-to-noise margin upper limit value on line; and