CN113949641A - 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
- 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
- H04L41/14—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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
Abstract
The invention provides a system and a method for analyzing and diagnosing uplink signal noise based on a cable modem, wherein the system for analyzing and diagnosing the uplink signal noise comprises the following components: an uplink signal transmitting module; an uplink signal control module; and the signal acquisition and analysis module. The method for analyzing and diagnosing the noise of the uplink signal comprises the following steps: an uplink signal sending step; controlling an uplink signal; and signal acquisition and analysis. The invention effectively analyzes and diagnoses whether the uplink signal sent by the main control chip has the 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 bring 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 a device and reaches a Cable Modem Terminal System (CMTS) of an operator through a coaxial Cable, the problem of upstream signal noise may occur before the Cable Modem sends out or in a transmission path, and the current Cable Modem lacks a means for diagnosing the upstream signal noise sent by itself, which makes it difficult to locate the problem generation location of the device where the upstream signal has the noise problem, and brings 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 noise of an uplink signal based on a cable modem to solve the above existing technical problems.
Disclosure of Invention
In view of the above problems, the present invention provides an uplink signal noise analyzing and diagnosing system based on a cable modem, the uplink signal noise analyzing and diagnosing system comprising:
the uplink signal transmitting module is used for separating an uplink test signal according to the uplink signal transmitted by the main control chip and transmitting the uplink test signal to the uplink signal control module through an uplink signal forwarding circuit;
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 and analysis module;
and the signal acquisition and analysis module is used for sampling and analyzing the uplink test signal transmitted by the uplink signal control module.
Further, the uplink signal noise analysis and diagnosis system further includes:
and the signal acquisition analysis control module is used for sending out control signals and control data.
Further, the control signal is used to control whether the uplink signal control module sends the uplink test signal to the signal acquisition and analysis module.
Furthermore, the control data includes specific acquisition parameters that the signal acquisition and analysis module needs to perform sampling analysis on the uplink test signal.
Further, the uplink signal sending module includes:
the programmable gain amplifier is used for amplifying the uplink signal sent by the main control chip:
and the coupler is used for separating the uplink test signal according to the amplified uplink signal.
Further, the signal collecting and analyzing module comprises a full-band capturing coordinator,
and the full-band capture 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.
Further, the full-band capturing coordinator is further configured to send the sampling analysis result to the signal acquisition analysis control module.
Further, the uplink signal noise analysis and diagnosis system further includes:
on the other hand, the invention also provides an uplink signal noise analysis and diagnosis method based on the cable modem, and the uplink signal noise analysis and diagnosis method comprises the following steps:
an uplink signal sending step, which is used for separating an uplink test signal according to the uplink signal sent by the main control chip and sending the uplink test signal to the uplink signal control step through an uplink signal forwarding circuit;
an uplink signal control step for receiving the uplink test signal and controlling whether the uplink test signal is forwarded to the signal acquisition and 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 noise of the uplink signal further comprises the following steps:
and a signal acquisition, analysis and 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 and 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 noise of the uplink signal based on the cable modem, the quality of the uplink signal sent by the cable modem can be analyzed by adding the system for analyzing and diagnosing the noise of the uplink signal to the cable modem, whether the noise problem exists in the uplink signal sent by the main control chip or not can be diagnosed, the position where the noise problem of the uplink signal occurs can be rapidly and accurately positioned, the frequency range where the noise problem of the uplink signal exists can be analyzed, and therefore the reason for generating the problem can be searched.
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 will 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 in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 shows a schematic diagram of the structure of the system according to the invention.
Fig. 2 shows a schematic flow diagram of the method according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an up signal noise analysis and diagnosis system based on a cable modem, which comprises:
the uplink signal transmitting module is used for separating an uplink test signal according to the uplink signal transmitted by the main control chip and transmitting the uplink test signal to the uplink signal control module through an uplink signal forwarding circuit;
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 and analysis module;
and the signal acquisition and analysis module is used for sampling and analyzing the uplink test signal transmitted by the uplink signal control module.
In addition, the uplink signal noise analysis and diagnosis system further comprises:
a signal acquisition analysis control module 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, wherein the control signal is divided into two types, one type 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 type is a second control signal for controlling the uplink signal control module not to send the uplink test signal to the signal acquisition and analysis module;
specifically, the method comprises the following steps:
referring to fig. 1, in the present embodiment, the uplink signal sending module includes:
the programmable gain amplifier is used for amplifying the uplink signal sent by the main control chip:
and the coupler is used for separating the uplink test signal according to the amplified uplink signal.
Therefore, the working process of the whole uplink signal sending module is as follows:
it should be noted that, in this embodiment, the main control chip is a control chip on the cable modem.
Referring to fig. 1, in the present embodiment, the signal acquisition analysis control module is connected to a main control chip, and 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, and the two state signals are respectively a state signal for starting noise analysis and diagnosis and a state signal for closing noise analysis and diagnosis.
When the signal acquisition analysis control module receives a state signal of starting noise analysis and 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 analysis control module receives the state signal of noise analysis diagnosis closing, the control signal sent to the uplink signal control module by the signal acquisition analysis control module is the second control signal.
Therefore, the working process of the whole uplink signal control module is as follows:
the upstream signal control module receives an upstream 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 the present embodiment, the signal acquisition and analysis module includes a Full-Band Capture coordinator (FBCT), and the Full-Band Capture coordinator is configured to receive the uplink test signal sent by the uplink signal control module and perform sampling analysis on the uplink test signal; and the full-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, wherein,
the control data (the control data is configured to the signal acquisition analysis control module by the main control chip, and the control data can be sent to the full-band capture coordinator in the signal acquisition analysis module through the signal acquisition analysis control module), and the control data contains specific acquisition parameters of the signal acquisition analysis module, which need to perform sampling analysis on the uplink test signal, wherein the specific acquisition parameters can include a sampling frequency range, a sampling time interval, a noise initial value of the sampling uplink test signal and the like.
Therefore, the working process of the full-band capture coordinator is as follows:
after the uplink signal control module sends the uplink test signal to the full-band capture coordinator, the full-band capture coordinator performs sampling analysis on the noise of the uplink test signal according to specific acquisition parameters and feeds back a sampling analysis result to the main control chip.
In summary, in this embodiment, for the uplink signal noise analysis and diagnosis system, the uplink signal noise analysis and diagnosis system may work in an active mode and a passive mode, specifically:
in an active mode, the signal acquisition and analysis control module starts a signal acquisition function (namely 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 an uplink test signal forwarded by the uplink signal control module, full-band scanning sampling analysis of the uplink test signal is carried out on the uplink test signal, a sampling analysis result is fed back to the signal acquisition and analysis control module, the signal acquisition and analysis control module analyzes and compares the sampling analysis result according to the fed-back sampling analysis result, if the problem that the uplink signal corresponding to the uplink test signal has noise interference is found, the found relevant result is sent to the main control chip, and a user and an operator are informed.
In a passive mode, the uplink signal noise analysis and 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 and analysis control module), the signal acquisition and analysis control module starts a signal acquisition function (the signal acquisition and 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 receive an 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 and 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), and a sampling analysis result is fed back to the signal acquisition and analysis control module, and according to the fed-back sampling analysis result, the signal acquisition analysis control module analyzes and compares the sampling analysis result, and if the problem that the uplink signal corresponding to the uplink test signal has noise interference is found, the found related result is sent to the main control chip and the user and the operator are informed.
On the other hand, the present embodiment further provides an uplink signal noise analysis and diagnosis method based on a cable modem, where the uplink signal noise analysis and diagnosis method includes:
s1, an uplink signal sending step, which is used for separating an uplink test signal according to the uplink signal sent by the main control chip and sending the uplink test signal to the uplink signal control step through an uplink signal forwarding circuit;
s2, an uplink signal control step for receiving the uplink test signal and controlling whether the uplink test signal is forwarded to the signal acquisition analysis control step;
and S3, a signal acquisition and analysis step, which is used for sampling and analyzing the uplink test signal forwarded by the uplink signal control step.
The method for analyzing and diagnosing the uplink signal noise further 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 and analysis step or not;
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 noise of uplink signal based on cable modem provided in this embodiment, each step may be implemented based on the function and implementation manner of each module in the system for analyzing and diagnosing noise of uplink signal based on cable modem provided in this embodiment, and therefore, details are not described here again.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An uplink signal noise analysis and diagnosis system based on a cable modem, which is characterized in that the uplink signal noise analysis and diagnosis system comprises:
the uplink signal transmitting module is used for separating an uplink test signal according to the uplink signal transmitted by the main control chip and transmitting the uplink test signal to the uplink signal control module through an uplink signal forwarding circuit;
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 and analysis module;
and the signal acquisition and analysis module is used for sampling and analyzing the uplink test signal transmitted by the uplink signal control module.
2. The system of claim 1, further comprising:
and the signal acquisition analysis control module is used for sending out control signals and control data.
3. The upstream cable modem based signal noise analysis diagnostic system of claim 2,
and 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.
4. The upstream cable modem based signal noise analysis diagnostic system of claim 2,
the control data comprises specific acquisition parameters of the signal acquisition and analysis module for sampling and analyzing the uplink test signal.
5. The method as claimed in claim 1, wherein the upstream signal transmitting module comprises:
the programmable gain amplifier is used for amplifying the uplink signal sent by the main control chip:
and the coupler is used for separating the uplink test signal according to the amplified uplink signal.
6. The upstream cable modem-based signal noise analysis and diagnosis system as claimed in claim 4, wherein said signal acquisition and analysis module comprises a full band capture coordinator,
and the full-band capture 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.
7. The upstream cable modem based signal noise analysis diagnostic system of claim 6,
and the full-band capturing coordinator is also used for sending the sampling analysis result to the signal acquisition analysis control module.
8. An uplink signal noise analysis and diagnosis method based on a cable modem is characterized by comprising the following steps:
an uplink signal sending step, which is used for separating an uplink test signal according to the uplink signal sent by the main control chip and sending the uplink test signal to the uplink signal control step through an uplink signal forwarding circuit;
an uplink signal control step for receiving the uplink test signal and controlling whether the uplink test signal is forwarded to the signal acquisition and 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.
9. The method as claimed in claim 8, further comprising the steps of:
and a signal acquisition, analysis and control step for sending out control signals and control data.
10. The method of claim 9, wherein the upstream signal noise analysis and diagnosis based on cable modem,
the control signal is used for controlling whether the uplink signal control step sends the uplink test signal to the signal acquisition and analysis step or not;
the control data comprises specific acquisition parameters for sampling and analyzing the uplink test signals in the signal acquisition and analysis step.
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