CN113949641B - System and method for analyzing and diagnosing uplink signal noise based on cable modem - Google Patents
System and method for analyzing and diagnosing uplink signal noise based on cable modem Download PDFInfo
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0695—Management of faults, events, alarms or notifications the faulty arrangement being the maintenance, administration or management system
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- H—ELECTRICITY
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- H04L5/00—Arrangements affording multiple use of the transmission path
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Abstract
The invention provides an upstream signal noise analysis and diagnosis system and a method based on a cable modem, wherein the upstream signal noise analysis and diagnosis system comprises: an uplink signal transmitting module; an uplink signal control module; and the signal acquisition and analysis module. The method for analyzing and diagnosing the uplink signal noise comprises the following steps: an uplink signal transmitting step; an uplink signal control step; and a signal acquisition and analysis step. The invention effectively analyzes and diagnoses whether the uplink signal sent by the main control chip has noise problem.
Description
Technical Field
The invention belongs to the technical field of signal analysis and diagnosis, and particularly relates to an uplink signal noise analysis and diagnosis system and method based on a cable modem.
Background
For a Cable Modem (CM) based on the docsis protocol, whether an uplink signal is normal or not can have great influence on normal operation of equipment, normal use of a user and normal management of the equipment by an operator. Since the upstream signal is sent by the device and arrives at the cable modem termination system (Cable Modem Terminal Systems, CMTS) of the operator via the coaxial cable, the problem of upstream signal noise may occur before the cable modem sends out, and may also occur in the transmission path, and the current cable modem lacks a problem generating location for the device that has a noise problem on the upstream signal sent by itself, which makes it difficult to locate the device that has a noise problem on the upstream signal, and presents a great challenge to the operator to solve the problem of upstream signal noise.
Therefore, there is a need to design a system and a method for analyzing and diagnosing uplink signal noise based on a cable modem to solve the above-mentioned technical problems.
Disclosure of Invention
In view of the above problems, the present invention provides an upstream signal noise analysis and diagnosis system based on a cable modem, the upstream signal noise analysis and diagnosis system comprising:
the uplink signal transmitting module is used for separating uplink test signals according to the uplink signals transmitted by the main control chip and transmitting the uplink test signals to the uplink signal control module through the uplink signal forwarding line;
the uplink signal control module is used for receiving the uplink test signal and controlling whether the uplink test signal is forwarded to the signal acquisition analysis module or not;
and the signal acquisition and analysis module is used for sampling and analyzing the uplink test signal forwarded by the uplink signal control module.
Further, the system for analyzing and diagnosing the uplink signal noise further comprises:
and the signal acquisition analysis control module is used for sending out control signals and control data.
Further, the control signal is used for controlling whether the uplink signal control module sends the uplink test signal to the signal acquisition analysis module.
Further, the control data includes specific acquisition parameters of the signal acquisition and analysis module, which need to sample and analyze the uplink test signal.
Further, the uplink signal sending module includes:
the programmable gain amplifier is used for amplifying the uplink signal sent out by the main control chip:
and the coupler is used for separating out an uplink test signal according to the amplified uplink signal.
Further, the signal acquisition and analysis module comprises a full-frequency-band capturing coordinator,
the full-frequency-band capturing coordinator is used for receiving the uplink test signal sent by the uplink signal control module and carrying out sampling analysis on the uplink test signal.
Furthermore, the full-band capturing coordinator is further configured to send the sampling analysis result to the signal acquisition analysis control module.
Further, the system for analyzing and diagnosing the uplink signal noise further comprises:
on the other hand, the invention also provides an upstream signal noise analysis and diagnosis method based on the cable modem, which comprises the following steps:
an uplink signal transmitting step, which is used for separating an uplink test signal according to an uplink signal transmitted by the main control chip and transmitting the uplink test signal to the uplink signal control step through an uplink signal forwarding line;
an uplink signal control step, which is used for receiving an uplink test signal and controlling whether the uplink test signal is forwarded to the signal acquisition analysis step;
and a signal acquisition and analysis step, which is used for sampling and analyzing the uplink test signal forwarded by the uplink signal control step.
Further, the method for analyzing and diagnosing the uplink signal noise further comprises the following steps:
and a signal acquisition analysis control step for sending out control signals and control data.
Further, the control signal is used for controlling whether the uplink signal control step sends the uplink test signal to the signal acquisition analysis step;
the control data comprises specific acquisition parameters for sampling and analyzing the uplink test signals in the signal acquisition and analysis step.
The invention has the beneficial effects that:
according to the system and the method for analyzing and diagnosing the uplink signal noise based on the cable modem, the uplink signal noise analysis and diagnosis system is added to the cable modem, so that the quality of the uplink signal sent by the cable modem can be analyzed, whether the uplink signal sent by the main control chip has a noise problem or not is diagnosed, the generation position of the uplink signal noise problem can be quickly and accurately positioned, the frequency range of the uplink signal noise problem is analyzed, and the problem generation cause can be found in an assisted manner.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of the structure of a system according to the invention.
Fig. 2 shows a schematic flow chart of the method according to the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an upstream signal noise analysis and diagnosis system based on a cable modem, which comprises:
the uplink signal transmitting module is used for separating uplink test signals according to the uplink signals transmitted by the main control chip and transmitting the uplink test signals to the uplink signal control module through the uplink signal forwarding line;
the uplink signal control module is used for receiving the uplink test signal and controlling whether the uplink test signal is forwarded to the signal acquisition analysis module or not;
and the signal acquisition and analysis module is used for sampling and analyzing the uplink test signal forwarded by the uplink signal control module.
In addition, the system for analyzing and diagnosing the uplink signal noise also comprises:
the signal acquisition analysis control module is used for sending out control signals, wherein,
the control signal is used for controlling whether the uplink signal control module sends the uplink test signal to the signal acquisition and analysis module or not, wherein the control signal is divided into two types, one is a first control signal for controlling the uplink signal control module to send the uplink test signal to the signal acquisition and analysis module, and the other is a second control signal for controlling the uplink signal control module to send the uplink test signal to the signal acquisition and analysis module;
specific:
referring to fig. 1, in this embodiment, the uplink signal sending module includes:
the programmable gain amplifier is used for amplifying the uplink signal sent out by the main control chip:
and the coupler is used for separating out an uplink test signal according to the amplified uplink signal.
Therefore, the working process of the whole uplink signal sending module is as follows:
the programmable gain amplifier amplifies the uplink signal sent by the main control chip, the amplified uplink signal is transmitted to the coupler, and the coupler separates the uplink test signal according to the amplified uplink signal.
Referring to fig. 1, in the present embodiment, the signal acquisition and analysis control module is connected to a main control chip, preferably, the main control chip is a DOCSIS communication chip. The main control chip can send two state signals to the signal acquisition analysis control module, wherein the two state signals are a state signal for starting noise analysis diagnosis and a state signal for closing noise analysis diagnosis respectively.
When the signal acquisition analysis control module receives a state signal for starting noise analysis diagnosis, the control signal sent to the uplink signal control module by the signal acquisition analysis control module is the first control signal; when the signal acquisition and analysis control module receives the state signal of the noise analysis diagnosis closing, the control signal sent to the uplink signal control module by the signal acquisition and analysis control module is the second control signal.
Therefore, the working process of the whole uplink signal control module is as follows:
the uplink signal control module receives an uplink test signal transmitted through the coupler, and,
after the uplink signal control module receives a first control signal sent by the signal acquisition and analysis control module, the uplink signal control module sends an uplink test signal to the signal acquisition and analysis module;
after the uplink signal control module receives the second control signal sent by the signal acquisition and analysis control module, the uplink signal control module does not send an uplink test signal to the signal acquisition and analysis module.
Referring to fig. 1, in this embodiment, the signal acquisition and analysis module includes a Full-band capturing coordinator (Full-Band Capture Tuner, FBCT), which is configured to receive an uplink test signal sent by the uplink signal control module and sample and analyze the uplink test signal; the full-frequency-band capturing coordinator is also used for sending the sampling analysis result to the signal acquisition analysis control module.
In this embodiment, the signal acquisition analysis control module is further configured to send out control data, where,
the control data (the control data is configured to the signal acquisition and analysis control module by the main control chip and can be sent to the full-frequency-band capture coordinator in the signal acquisition and analysis module by the signal acquisition and analysis control module) comprises specific acquisition parameters which need to sample and analyze the uplink test signal by the signal acquisition and analysis module, wherein the specific acquisition parameters can comprise a sampling frequency range, a sampling time interval, a noise starting value of the sampled uplink test signal and the like.
Therefore, the full-band capture coordinator works as follows:
after the uplink signal control module sends the uplink test signal to the full-band capturing coordinator, the full-band capturing coordinator carries out sampling analysis on noise of the uplink test signal according to specific acquisition parameters, and the sampling analysis result is fed back to the main control chip.
In view of the above, in this embodiment, for the present uplink signal noise analysis and diagnosis system, the uplink signal noise analysis and diagnosis system may operate in an active mode and a passive mode, specifically:
in the active mode, the signal acquisition and analysis control module starts the signal acquisition function (i.e. the signal acquisition and analysis control module sends the first control signal to the uplink signal control module), the full-band capture coordinator always receives the uplink test signal sent by the uplink signal control module, performs full-band scanning and sampling analysis on the uplink test signal, feeds back a sampling analysis result to the signal acquisition and analysis control module, performs analysis and comparison on the sampling analysis result according to the fed-back sampling analysis result, and sends the found relevant result to the main control chip and informs a user and an operator if the problem of noise interference of the uplink signal corresponding to the uplink test signal is found.
In the passive mode, the uplink signal noise analysis diagnosis subsystem needs to wait for a start command from a user or an operator (the command can enable the main control chip to control the signal acquisition analysis control module), the signal acquisition analysis control module starts a signal acquisition function (the signal acquisition analysis control module can send the first control signal to the uplink signal control module under the control of the main control chip), the full-band capture coordinator can only receive the uplink test signal forwarded by the uplink signal control module at the moment and perform sampling analysis on the uplink test signal (control data configured by the main control chip can be sent to the full-band capture coordinator through the signal acquisition analysis control module, the full-band capture coordinator performs sampling analysis on the uplink test signal according to relevant specific acquisition parameters contained in the control data), the sampling analysis result is fed back to the signal acquisition analysis control module, the signal acquisition analysis control module performs analysis comparison on the sampling analysis result according to the fed back sampling analysis result, and notifies the main control chip if the uplink signal corresponding to the uplink test signal has noise interference problem, and notifies the user and the operator of the found relevant result.
On the other hand, the embodiment also provides an uplink signal noise analysis and diagnosis method based on the cable modem, wherein the uplink signal noise analysis and diagnosis method comprises the following steps:
s1, an uplink signal sending step, namely separating an uplink test signal according to an uplink signal sent by a main control chip, and sending the uplink test signal to an uplink signal control step through an uplink signal forwarding line;
s2, an uplink signal control step, which is used for receiving an uplink test signal and controlling whether the uplink test signal is forwarded to a signal acquisition analysis control step;
and S3, a signal acquisition and analysis step, which is used for carrying out sampling analysis on the uplink test signal forwarded by the uplink signal control step.
The method for analyzing and diagnosing the uplink signal noise also comprises the following steps:
a signal acquisition analysis control step for sending out control signals and control data, wherein,
the control signal is used for controlling whether the uplink signal control step sends the uplink test signal to the signal acquisition analysis step;
the control data comprises specific acquisition parameters for sampling and analyzing the uplink test signals in the signal acquisition and analysis step.
It should be understood that, in the method for analyzing and diagnosing uplink signal noise based on a cable modem provided in this embodiment, each step may be implemented based on the functions and implementation manners of each module in the system for analyzing and diagnosing uplink signal noise based on a cable modem provided in this embodiment, so that the description thereof is omitted herein.
The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (10)
1. An upstream signal noise analysis and diagnosis system based on a cable modem is characterized in that,
the system for analyzing and diagnosing the noise of the uplink signal comprises:
an uplink signal transmitting module for separating uplink measurement according to the uplink signal transmitted by the main control chip
The test signal is sent to the uplink signal control module through an uplink signal forwarding line;
the uplink signal control module is used for receiving the uplink test signal and controlling whether the uplink test signal is converted or not
Sending the signals to a signal acquisition and analysis module;
the signal acquisition analysis control module is used for sending out control signals, wherein,
the control signal is used for controlling whether the uplink signal control module sends the uplink test signal to the signal
The number acquisition analysis module is used for dividing the control signals into two types, wherein one type is a control module for controlling the uplink signals
The first control signal for transmitting the uplink test signal to the signal acquisition and analysis module is the other one for controlling the uplink
The signal control module does not send the uplink test signal to a second control signal of the signal acquisition and analysis module;
when the signal acquisition analysis control module receives a state signal of noise analysis diagnosis on
The control signal sent to the uplink signal control module by the number acquisition analysis control module is the first control
A signal; when the signal acquisition analysis control module receives a status signal that the noise analysis diagnosis is off,
the control signal sent to the uplink signal control module by the signal acquisition and analysis control module is the second control
Preparing a signal; the uplink signal control module receives an uplink test signal sent by the coupler and outputs the uplink test signal to the uplink control module
After the line signal control module receives the first control signal sent by the signal acquisition analysis control module, the line signal control module goes up
The signal control module sends the uplink test signal to the signal acquisition analysis module; uplink signal control module
After receiving the second control signal sent by the signal acquisition analysis control module, the uplink signal control module does not need to perform
Sending an uplink test signal to a signal acquisition analysis module;
the signal acquisition and analysis module is used for transmitting the uplink test signal forwarded by the uplink signal control module
The number is sampled and analyzed;
the upstream signal noise analysis and diagnosis system operates in an active mode and a passive mode, and in the active mode,
the signal acquisition and analysis control module starts a signal acquisition function and transmits the signal acquisition and analysis control module
The first control signal is sent to the uplink signal control module, and the full-band capturing coordinator always receives the uplink signal
The control module forwards the uplink test signal and scans the uplink test signal in the full frequency band
Sampling analysis, feeding back the sampling analysis result to the signal acquisition analysis control module, and sampling according to feedback
The signal acquisition analysis control module analyzes and compares the sampling analysis results, if the sampling analysis results are found to exist
The uplink signal corresponding to the uplink test signal has noise interference problem, and the found relevant result is sent
Giving the main control chip and informing a user;
in passive mode, the upstream signal noise analysis and diagnosis subsystem needs to wait for the signal from the user or the operation
A quotient start command which can lead the main control chip to control the signal acquisition analysis control module, the signal acquisition is divided
The analysis control module starts a signal acquisition function, and the signal acquisition analysis control module can be controlled by the main control chip
The first control signal is sent to an uplink signal control module, and the full-band capturing coordinator can only perform
Receiving the uplink test signal transmitted by the uplink signal control module, and sampling the uplink test signal
The control data configured by the main control chip is analyzed and sent to the full frequency through the signal acquisition analysis control module
A segment capturing coordinator, wherein the full-band capturing coordinator is used for capturing the relevant specific acquisition parameters contained in the control data,
sampling analysis is carried out on the uplink test signal, the sampling analysis result is fed back to the signal acquisition analysis control module,
according to the feedback sampling analysis result, the signal acquisition analysis control module carries out analysis ratio on the sampling analysis result
For the problem of noise interference of the uplink signal corresponding to the uplink test signal, it will be found that
And (5) sending the related result to the main control chip and notifying the user.
2. The upstream signal noise analysis and diagnosis system based on cable modem according to claim 1
The system is characterized in that the system for analyzing and diagnosing the uplink signal noise further comprises:
and the signal acquisition analysis control module is used for sending out control signals and control data.
3. The upstream signal noise analysis and diagnosis system based on cable modem according to claim 2
The system is characterized in that,
the control signal is used for controlling whether the uplink signal control module sends the uplink test signal to the wireless communication device
And the signal acquisition and analysis module.
4. The upstream signal noise analysis and diagnosis system based on cable modem according to claim 2
The system is characterized in that,
the control data comprises that the signal acquisition and analysis module needs to sample and divide the uplink test signal
And analyzing specific acquisition parameters.
5. The upstream signal noise analysis and diagnosis method based on cable modem according to claim 1
The method is characterized in that the uplink signal transmitting module comprises the following steps:
the programmable gain amplifier is used for amplifying the uplink signal sent out by the main control chip:
and the coupler is used for separating an uplink test signal according to the amplified uplink signal.
6. The upstream signal noise analysis and diagnosis system based on cable modem according to claim 4
The system is characterized in that the signal acquisition and analysis module comprises a full-frequency band capturing coordinator,
the full-frequency band capturing coordinator is used for receiving the uplink test signal sent by the uplink signal control module,
and performs sampling analysis on the uplink test signal.
7. The upstream signal noise analysis and diagnosis system based on cable modem according to claim 6
The system is characterized in that,
the full-band capturing coordinator is also used for sending the sampling analysis result to the signal acquisition analysis control
And (5) a module.
8. A cable modem-based uplink signal noise analysis and diagnosis method is characterized in that,
the method for analyzing and diagnosing the uplink signal noise comprises the following steps:
an uplink signal transmitting step for separating uplink measurement according to the uplink signal transmitted by the main control chip
The test signal is sent to the uplink signal control step through the uplink signal forwarding line;
an uplink signal control step for receiving an uplink test signal and controlling whether the uplink test signal is converted or not
Sending the signals to a signal acquisition and analysis step;
the signal acquisition analysis control module is used for sending out control signals, wherein,
the control signal is used for controlling whether the uplink signal control module sends the uplink test signal to the signal
The number acquisition analysis module is used for dividing the control signals into two types, wherein one type is a control module for controlling the uplink signals
The first control signal for transmitting the uplink test signal to the signal acquisition and analysis module is the other one for controlling the uplink
The signal control module does not send the uplink test signal to a second control signal of the signal acquisition and analysis module;
when the signal acquisition analysis control module receives a state signal of noise analysis diagnosis on
The control signal sent to the uplink signal control module by the number acquisition analysis control module is the first control
A signal; when the signal acquisition analysis control module receives a status signal that the noise analysis diagnosis is off,
the control signal sent to the uplink signal control module by the signal acquisition and analysis control module is the second control
Preparing a signal; the uplink signal control module receives an uplink test signal sent by the coupler and outputs the uplink test signal to the uplink control module
After the line signal control module receives the first control signal sent by the signal acquisition analysis control module, the line signal control module goes up
The signal control module sends the uplink test signal to the signal acquisition analysis module; uplink signal control module
After receiving the second control signal sent by the signal acquisition analysis control module, the uplink signal control module does not need to perform
3, sending an uplink test signal to a signal acquisition analysis module;
a signal acquisition and analysis step for forwarding the uplink test signal forwarded by the uplink signal control step
The number is sampled and analyzed;
the upstream signal noise analysis and diagnosis system operates in an active mode and a passive mode, and in the active mode,
the signal acquisition and analysis control module starts a signal acquisition function and transmits the signal acquisition and analysis control module
The first control signal is sent to the uplink signal control module, and the full-band capturing coordinator always receives the uplink signal
The control module forwards the uplink test signal and scans the uplink test signal in the full frequency band
Sampling analysis, feeding back the sampling analysis result to the signal acquisition analysis control module, and sampling according to feedback
The signal acquisition analysis control module analyzes and compares the sampling analysis results, if the sampling analysis results are found to exist
The uplink signal corresponding to the uplink test signal has noise interference problem, and the found relevant result is sent
Giving the main control chip and informing a user;
in passive mode, the upstream signal noise analysis and diagnosis subsystem needs to wait for the signal from the user or the operation
A quotient start command which can lead the main control chip to control the signal acquisition analysis control module, the signal acquisition is divided
The analysis control module starts a signal acquisition function, and the signal acquisition analysis control module can be controlled by the main control chip
The first control signal is sent to an uplink signal control module, and the full-band capturing coordinator can only perform
Receiving the uplink test signal transmitted by the uplink signal control module, and sampling the uplink test signal
The control data configured by the main control chip is analyzed and sent to the full frequency through the signal acquisition analysis control module
A segment capturing coordinator, wherein the full-band capturing coordinator is used for capturing the relevant specific acquisition parameters contained in the control data,
sampling analysis is carried out on the uplink test signal, the sampling analysis result is fed back to the signal acquisition analysis control module,
according to the feedback sampling analysis result, the signal acquisition analysis control module carries out analysis ratio on the sampling analysis result
For the problem of noise interference of the uplink signal corresponding to the uplink test signal, it will be found that
And (5) sending the related result to the main control chip and notifying the user.
9. The upstream signal noise analysis and diagnosis method based on cable modem according to claim 8
The method is characterized in that the method for analyzing and diagnosing the uplink signal noise further comprises the following steps:
and a signal acquisition analysis control step for sending out control signals and control data.
10. The upstream signal-to-noise analysis and diagnosis based on cable modem according to claim 9
The method is characterized in that,
the control signal is used for controlling whether the uplink signal control step sends the uplink test signal to the signal
Collecting and analyzing step 4;
the control data comprises the step of sampling and dividing the uplink test signal in the signal acquisition and analysis step
And analyzing specific acquisition parameters.
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