CN207603832U - A kind of forward signal monitoring optical node device based on DOCSIS - Google Patents
A kind of forward signal monitoring optical node device based on DOCSIS Download PDFInfo
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- CN207603832U CN207603832U CN201721624735.7U CN201721624735U CN207603832U CN 207603832 U CN207603832 U CN 207603832U CN 201721624735 U CN201721624735 U CN 201721624735U CN 207603832 U CN207603832 U CN 207603832U
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Abstract
The utility model discloses a kind of forward signals based on DOCSIS to monitor optical node device, utilize forward signal test port, the indexs such as the power of forward signal, SNR (MER) and the CER (BER) that are received to optical node device are monitored and performance evaluation, network management system is transferred to by DOCSIS transmission channels, the foundation as the examination of webmaster commissioning.It simultaneously can also be according to preset threshold value, tracing detection and alarm are carried out to multiple performance parameter, the problem in network is found in time, the reason of with leading to the problem of, some frequency point is accurately navigated to go wrong, reduction personnel investigate the time of problem, improve network operation efficiency and initiative.
Description
Technical field
The utility model is related to cable television technology fields more particularly to a kind of forward signal based on DOCSIS to monitor light
Node device.
Background technology
As the integration of three networks is pushed forward comprehensively, " broadband China " strategy is deeply implemented, HFC (Hybrid are used in CHINA RFTCOM Co Ltd
Fiber-Coaxial, hybrid fiber coax) scheme carry out Two-way Network transformation during, the items such as network operation are referred to
Mark also proposed higher requirement.
CHINA RFTCOM Co Ltd carries the business such as the radio and television of huge numbers of families, video interactive, with the continuous development of business, peace
Broadcast entirely it is significant, network security be in CHINA RFTCOM Co Ltd Security Construction it is essential one work, and low cost safeguard
As a big difficulty of each operator research.At present in CHINA RFTCOM Co Ltd, can only instrument be used by O＆M technical staff at the scene
The TP (Test Port, test port) of positive optical node is monitored, detection in real time in 24 hours is extremely difficult to, greatly increases
O＆M cost, and cannot actively timely feedback signal quality test to operation maintenance personnel with extraordinary noise.For signal
The judgement of quality is all after fault-signal influence business at present, then is positioned manually and is excluded, can not provide more smart
Really and faster signal detection ability, lead to that network stabilization is low, O＆M efficiency is low.
Utility model content
In order to solve technical problem present in background technology, the utility model proposes it is a kind of based on DOCSIS just
To signal monitoring optical node device, to solve the problems, such as that in the prior art forward signal can not be carried out accurate quick detection.
The utility model proposes a kind of forward signal based on DOCSIS monitor optical node device, including：
Optical node forward direction receiving module, receives the optical signal from network side HFC headend transmitters, is converted into radio frequency
Signal is output to user side by forward signal interface；
User side is switched to optical signal by the reversed sending module of optical node by the radiofrequency signal that reverse signal interface inputs,
It is sent to network side HFC head end receivers；
First RF coupler, between optical node forward direction receiving module and forward signal interface；
First negative testing port, between forward signal interface and optical node forward direction receiving module；
Second negative testing port, between the first positive test port and optical node forward direction receiving module；
First radio frequency amplifier, input terminal are connect with the first positive test port；
Second radio frequency amplifier, input terminal are connect with the second positive test port；
Radiofrequency signal switching switch is connect with the output terminal of the first radio frequency amplifier, the second radio frequency amplifier, carries out first
Switching between positive test port and the second positive test port；
Second radiofrequency signal switching switch is exported with the first radiofrequency signal switching switch output terminal and the first RF coupler
End connection；
Second RF coupler, between reverse signal interface and the reversed sending module of optical node；
Forward signal monitoring module is connect with the output terminal of the second radiofrequency signal switching switch and the second RF coupler.
Preferably, forward signal monitoring module specifically includes：
Receiving submodule is connect with the output terminal of the second radiofrequency signal switching switch, for receiving by the first RF coupling
Forward signal, the first positive test signal or the second positive test signal of device output；
Submodule is monitored, is connect with receiving submodule, for being detected to positive information real-time online；
Submodule is alerted, connect with monitoring submodule, is alerted for triggering；
Data sub-module stored is connect with monitoring submodule, for storing detection information；
Submodule is uploaded, is connect with monitoring submodule and data sub-module stored, for reporting detection information.
In the utility model, in the case where not influencing optical node normal function, using forward signal test port, to light
The indexs such as power, SNR (MER) and the CER (BER) of the forward signal that node device receives are monitored and performance evaluation, pass through
DOCSIS transmission channels are transferred to network management system, the foundation as the examination of webmaster commissioning.It simultaneously can also be according to preset threshold
Value, carries out multiple performance parameter tracing detection and alarm, finds the problem and the original led to the problem of in network in time
Cause accurately navigates to some frequency point and goes wrong, and reduces the time that personnel investigate problem, improves network operation efficiency and active
Property.
Description of the drawings
Fig. 1 is that a kind of forward signal based on DOCSIS that the utility model embodiment 1 proposes monitors optical node device knot
Composition.
Specific embodiment
The utility model embodiment 1 proposes a kind of forward signal monitoring optical node device based on DOCSIS, such as Fig. 1 institutes
Show, including：
Optical node forward direction receiving module 1, receives the optical signal from network side HFC headend transmitters, is converted into and penetrates
Frequency signal is output to user side by forward signal interface 2；
User side is switched to light by the radiofrequency signal that reverse signal interface 4 inputs and believed by the reversed sending module 3 of optical node
Number, it is sent to network side HFC head end receivers；
First RF coupler 5 between optical node forward direction receiving module 1 and forward signal interface 2, is coupled out part
Positive radiofrequency signal；
First positive test port 6, between forward signal interface 2 and optical node forward direction receiving module 1；
Second positive test port 7, between the first positive test port 6 and optical node forward direction receiving module 1；
First radio frequency amplifier 8, input terminal are connect with the first positive test port 6, to 6 coupling of the first positive test port
The the first positive test signal closed out is amplified；
Second radio frequency amplifier 9, input terminal are connect with the second positive test port 7, to 6 coupling of the second positive test port
The the second positive test signal closed out is amplified；
First radiofrequency signal switching switch 10 is connect with the output terminal of the first radio frequency amplifier 8, the second radio frequency amplifier 9,
By the switching between the first positive test port 6 and the second positive test port 7, realize to two different locations of optical node just
Monitoring to signal；Although in the present embodiment by taking two forward signal test ports as an example, in practice can also to two with
Upper test port is monitored.
Second radiofrequency signal switching switch 11, with 10 output terminal of the first radiofrequency signal switching switch and the first RF coupler
5 output terminals connect, and select the forward signal, the first positive test signal or the second positive survey that are inputted by the first RF coupler 5
Trial signal is sent to forward signal monitoring module 13；
Between reverse signal interface 4 and the reversed sending module 3 of optical node, forward direction is believed for second RF coupler 12
Number 13 up-delivering signal of monitoring module and the coupling of user side reverse signal；
Forward signal monitoring module 13, the output with the second radiofrequency signal switching switch 11 and the second RF coupler 12
End connection, detects positive information real-time online, detects signal spectrum and noise characteristic, signal power, SNR (Signal
Noise Ratio, signal-to-noise ratio), MER (Modulation Error Ration, modulation error rate), the indexs such as CER (BER).
Forward signal monitoring module 13 specifically includes：Receiving submodule, the output with the second radiofrequency signal switching switch 11
End connection, for receiving the forward signal, the first positive test signal or the second positive test that are exported by the first RF coupler 5
Signal, and by facility registration to CMTS (Cable Modem Termination System, cable modem head end system
System), remote management is carried out to it by CMTS；Submodule is monitored, is connect with receiving submodule, for existing in real time to positive information
Line detects, and detects signal spectrum and noise characteristic, signal power, the indexs such as SNR, MER, CER (BER), with draw planisphere and
Quantitative analysis signal quality；Submodule is alerted, is connect with monitoring submodule, by the power of specified frequency point, SNR (MER) and CER
(BER) if value and pre-set threshold value comparison beyond the threshold value of setting, report triggering to alert, it is different to reach network signal
It often can quickly find, the target be accurately positioned, timely respond to, quickly handled, reach the target of optimization network, it is next to build
Basis is provided for cable TV network, is had a good application prospect.Data sub-module stored is connect with monitoring submodule, will
Power, SNR (MER) and CER (BER) value of specified frequency point preserve, as the foundation of network operation, long-term monitoring, data analysis
Processing etc.；Submodule is uploaded, is connect with monitoring submodule and data sub-module stored, the information of sub-module stored storage is sent
To the reversed sending module 3 of optical node, and upload.
A Whole frequency band signal monitoring standalone module of the utility model based on 3.0 agreements of DOCSIS, can be in optical node
Flexibly plug uses for middle progress.Two kinds of way to manages are provided：Local WEB management of webpage mode and SNMP (MIB) remote management,
Wherein WEB webpages mode is convenient for individually being monitored management to a certain.SNMP (MIB) provides external unified interface, Ke Yitong
It crosses webmaster and supervises more stylobates in the forward signal monitoring optical node device of DOCSIS.
The preferable specific embodiment of the above, only the utility model, but the scope of protection of the utility model is not
This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (2)
1. a kind of forward signal monitoring optical node device based on DOCSIS, which is characterized in that including：
Optical node forward direction receiving module (1), receives the optical signal from network side HFC headend transmitters, is converted into radio frequency
Signal is output to user side by forward signal interface (2)；
User side is switched to light by the radiofrequency signal that reverse signal interface (4) inputs and believed by the reversed sending module of optical node (3)
Number, it is sent to network side HFC head end receivers；
First RF coupler (5), between optical node forward direction receiving module (1) and forward signal interface (2)；
First negative testing port (6), between forward signal interface (2) and optical node forward direction receiving module (1)；
Second negative testing port (7), between the first positive test port (6) and optical node forward direction receiving module (1)；
First radio frequency amplifier (8), input terminal are connect with the first positive test port (6)；
Second radio frequency amplifier (9), input terminal are connect with the second positive test port (7)；
Radiofrequency signal switching switch (10) is connect with the output terminal of the first radio frequency amplifier (8), the second radio frequency amplifier (9), into
Switching between the first positive test of row port (6) and the second positive test port (7)；
Second radiofrequency signal switching switch (11), with the first radiofrequency signal switching switch (10) output terminal and the first RF coupler
(5) output terminal connects；
Second RF coupler (12), between reverse signal interface (4) and the reversed sending module of optical node (3)；
Forward signal monitoring module (13), the output with the second radiofrequency signal switching switch (11) and the second RF coupler (12)
End connection.
2. the forward signal monitoring optical node device according to claim 1 based on DOCSIS, which is characterized in that forward direction letter
Number monitoring module (13) specifically includes：
Receiving submodule is connect with the output terminal of the second radiofrequency signal switching switch (11), for receiving by the first RF coupling
Forward signal, the first positive test signal or the second positive test signal of device (5) output；
Submodule is monitored, is connect with receiving submodule, for being detected to positive information real-time online；
Submodule is alerted, connect with monitoring submodule, is alerted for triggering；
Data sub-module stored is connect with monitoring submodule, for storing detection information；
Submodule is uploaded, is connect with monitoring submodule and data sub-module stored, for reporting detection information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624735.7U CN207603832U (en) | 2017-11-28 | 2017-11-28 | A kind of forward signal monitoring optical node device based on DOCSIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624735.7U CN207603832U (en) | 2017-11-28 | 2017-11-28 | A kind of forward signal monitoring optical node device based on DOCSIS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207603832U true CN207603832U (en) | 2018-07-10 |
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ID=62761661
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721624735.7U Active CN207603832U (en) | 2017-11-28 | 2017-11-28 | A kind of forward signal monitoring optical node device based on DOCSIS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021102164A1 (en) * | 2019-11-21 | 2021-05-27 | Arris Enterprises Llc | Node with radio frequency (rf) switching network and corresponding methods for identifying coupled client devices |
-
2017
- 2017-11-28 CN CN201721624735.7U patent/CN207603832U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021102164A1 (en) * | 2019-11-21 | 2021-05-27 | Arris Enterprises Llc | Node with radio frequency (rf) switching network and corresponding methods for identifying coupled client devices |
| US11917259B2 (en) | 2019-11-21 | 2024-02-27 | Arris Enterprises Llc | Node with radio frequency (RF) switching network and corresponding methods for identifying coupled client devices |
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