阅读说明：本技术 一种基于均值标准差的有线电视网络运维方法和系统 (Cable television network operation and maintenance method and system based on mean standard deviation ) 是由 沈鑫 邓志杰 孙彤 赵伟 文静 戴宁燕 夏剑云 王正超 孙坚 于 2021-07-01 设计创作，主要内容包括：本发明公开了一种基于均值标准差的有线电视网络运维方法,包括如下步骤：制定CM终端各项运行指标及合格标准；网管系统对CM终端多项运行数据进行采集和存储；大数据技术进行终端数据的实时指标合格评判并将结果储存到数据库中；利用资源管理系统建立网络拓扑,建立不同网络节点下CM终端集合；计算每个光节点下终端集合中在线终端数,筛选出值得进行分析的目标光机；计算光机节点终端各个指标的合格率,圈出指标运行合格率低的光机及需要运维的指标；计算运行合格率低的光机所覆盖的楼栋终端指标偏移量,确定维护楼栋、维护指标和优化方向。该方法能够精准圈定有线电视双向HFC网络需主动运维的位置和优化指标,提升主动运维的效率和效能。(The invention discloses a cable television network operation and maintenance method based on a mean standard deviation, which comprises the following steps: formulating various operation indexes and qualified standards of the CM terminal; the network management system collects and stores a plurality of operation data of the CM terminal; the big data technology carries out real-time index qualification judgment on terminal data and stores the result into a database; establishing a network topology by using a resource management system, and establishing a CM terminal set under different network nodes; calculating the number of online terminals in a terminal set under each optical node, and screening out a target optical machine which is worthy of analysis; calculating the qualification rate of each index of the optical computer node terminal, and enclosing the optical machine with low index operation qualification rate and the index needing operation and maintenance; and calculating the offset of the building terminal index covered by the optical machine with low operation qualified rate, and determining the maintenance building, the maintenance index and the optimization direction. The method can accurately define the position and the optimized index of the cable television bidirectional HFC network needing active operation and maintenance, and improve the efficiency and the efficiency of the active operation and maintenance.)

1. A cable television network operation and maintenance method based on a mean standard deviation is characterized by comprising the following steps:

formulating various operation indexes and qualified standards of the CM terminal;

the network management system collects and stores a plurality of operation data of the CM terminal;

the big data technology carries out real-time index qualification judgment on terminal data and stores the result into a database;

establishing a network topology by using a resource management system, and establishing a CM terminal set under different network nodes;

calculating the number of online terminals in a terminal set under each optical node, and screening out a target optical machine which is worthy of analysis;

calculating the qualification rate of each index of the optical computer node terminal, and enclosing the optical machine with low index operation qualification rate and the index needing operation and maintenance;

and calculating the offset of the building terminal index covered by the optical machine with low operation qualified rate, and determining the maintenance building, the maintenance index and the optimization direction.

2. The network operation and maintenance method according to claim 1, wherein the period of collecting multiple operation data of the CM terminal by the network management system is less than half an hour.

3. The network operation and maintenance method according to claim 1, wherein the step big data technology performs judgment on terminal data based on the standard of making all operation qualification standards of the CM terminal, adds a "qualification flag" field to each piece of collected data, inputs the collected data and judges whether the data is in a qualified range, if the data result is qualified, the word "qualification flag" is 1, otherwise, the word "qualification flag" is 0, and writes the "qualification flag" into the database.

4. The network operation and maintenance method according to claim 1, wherein the resource management system is an operator basic information support system, and is responsible for establishing and maintaining physical connection information between all network cables and equipment, and establishing a coverage topology relationship between management areas, optical-mechanical-building-CM terminals and MACs by means of the resource management system.

5. The network operation and maintenance method according to claim 4, wherein the number of on-line terminals in the terminal set under each optical node is calculated according to the topological relationship between the management area-optical machine-building-CM terminal MAC established by the resource management system, so as to screen the optical machines worthy of further analysis, and the screening is performed by the following steps:

calculating the number of online terminals in each optical machine terminal MAC set to form an optical machine terminal MAC set A;

and calculating the median and the arithmetic mean value of the set A, and taking out the value of which the number of the online terminals in the set A is greater than the median or the arithmetic mean value, wherein the light machine corresponding to the value is a target light machine worthy of analysis.

6. The network operation and maintenance method according to claim 5, wherein the step of selecting the index requiring operation and maintenance from the target optical machine specifically comprises the following steps:

taking a natural month as a period, collecting each index of the terminal for multiple times, calculating the index qualification rate of each terminal under an online target optical machine, judging whether the terminal is qualified or not according to the index qualification rate, and if the terminal is qualified, recording the qualified rate as 1, otherwise, recording the qualified rate as 0;

calculating the operation qualified rate of each index of all terminals under the target optical machine, wherein the operation qualified rate is the ratio of the number of the qualified terminals in operation to the total number of the on-line terminals;

and selecting a target bare engine needing operation and maintenance corresponding to the index according to the operation qualification rate.

7. The network operation and maintenance method according to claim 6, wherein in each building covered by the operation and maintenance target optical machine, the steps of determining the maintenance building, the maintenance index and the maintenance direction are as follows:

calculating index offset under each terminal;

calculating the accumulated value of each index offset of all online terminals under each building;

the accumulated value of the root saw offset and the absolute value of the offset determine the maintenance index, the maintenance priority and the network adjusting direction of each building.

8. The utility model provides a cable television network operation and maintenance system based on mean value standard deviation, includes CM terminal, CMTS local side, metropolitan area network, switch and acquisition server, its characterized in that, at least one CM terminal is connected to CMTS local side, CMTS local side and metropolitan area network are connected, the acquisition server is connected to the one end of switch, and metropolitan area network is connected to the other end.

9. The data collection system of claim 8, wherein the CMTS office is configured to send the CM termination operation index to the collection server via a metropolitan area network.

10. The data collection system of claim 9, wherein the switch enables information interaction between the collection server and the metropolitan area network.

Technical Field

The invention relates to the field of network operation and maintenance service, in particular to a cable television network operation and maintenance method and system based on a mean standard deviation.

Background

A Hybrid Fiber-Coax (HFC) network for cable television is a wired communication network that uses a radio frequency transmission technology to realize Hybrid optical-electrical transmission, and although the transmission distance is long, since the cable transmission part is greatly affected by factors such as environment, temperature, cable aging, and joint oxidation, the network transmission index needs to be maintained by continuous maintenance and adjustment.

With the increasing expansion of network scale, the workload of active routing inspection of the cable television network is increased gradually, and the active overhaul of the whole network cannot be realized. At present, the cable television network mainly develops passive operation and maintenance around the repair of a user, the work reduces user experience, meanwhile, systematic network tuning cannot be well developed, and the network transmission quality cannot be guaranteed.

The network management system can acquire the operation data of a single Cable Modem (CM) terminal device, but the data are dispersed without the assistance of network topology and position information, so that an active operation and maintenance target capable of improving the network quality in batch cannot be formed. Meanwhile, Cable Modem Terminal System (CMTS) local side equipment belongs to high multiplexing communication equipment, one CMTS can be accessed to thousands of terminals to serve thousands of users, the operation and maintenance range cannot be effectively reduced by relying on CMTS operation data, and operation and maintenance working pressure is relieved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a cable television network operation and maintenance method and system based on a mean standard deviation.

The invention is realized by the following technical scheme:

a cable television network operation and maintenance method based on a mean standard deviation is characterized by comprising the following steps:

formulating various operation indexes and qualified standards of the CM terminal;

the network management system collects and stores a plurality of operation data of the CM terminal;

the big data technology carries out real-time index qualification judgment on terminal data and stores the result into a database;

establishing a network topology by using a resource management system, and establishing a CM terminal set under different network nodes;

calculating the number of online terminals in a terminal set under each optical node, and screening out a target optical machine which is worthy of analysis;

calculating the qualification rate of each index of the optical computer node terminal, and enclosing the optical machine with low index operation qualification rate and the index needing operation and maintenance;

and calculating the offset of the building terminal index covered by the optical machine with low operation qualified rate, and determining the maintenance building, the maintenance index and the optimization direction.

Furthermore, the network management system acquires a plurality of running data of the CM terminal for less than half an hour.

Further, the big data technology in the step judges the terminal data, adds a 'qualified mark' field to each piece of collected data, inputs the collected data and judges whether the data is in a qualified range, if the data result is qualified, the 'qualified mark' of the character sample is 1, otherwise, the 'qualified mark' of the character sample is 0, and writes the 'qualified mark' into the database.

Further, the resource management system is an operator basic information support system, and is responsible for establishing and maintaining physical connection information between all network cables and equipment, and establishing a coverage topology relationship between a management area, an optical-mechanical-building and a CM terminal Media Access Control (MAC) by relying on the resource management system.

Further, according to a topological relation between management areas, optical machines, buildings and CM terminals MAC established by the resource management system, the number of on-line terminals in a terminal set under each optical node is calculated so as to screen the optical machines worthy of further analysis, and the screening is specifically performed through the following steps:

calculating the number of online terminals in each optical machine terminal MAC set to form an optical machine terminal MAC set A;

and calculating the median and the arithmetic mean value of the set A, and taking out the value of which the number of the online terminals in the set A is greater than the median or the arithmetic mean value, wherein the light machine corresponding to the value is a target light machine worthy of analysis.

Further, an index needing operation and maintenance is selected from the target optical machine, and the method specifically comprises the following steps:

taking a natural month as a period, collecting each index of the terminal for multiple times, calculating the index qualification rate of each terminal under an online target optical machine, judging whether the terminal is qualified or not according to the index qualification rate, and if the terminal is qualified, recording the qualified rate as 1, otherwise, recording the qualified rate as 0;

calculating the operation qualified rate of each index of all terminals under the target optical machine, wherein the operation qualified rate is the ratio of the number of the qualified terminals in operation to the total number of the on-line terminals;

and selecting a target bare engine needing operation and maintenance corresponding to the index according to the operation qualification rate.

Further, in each building covered by the operation and maintenance target optical machine, the steps of determining the maintenance building, the maintenance index and the maintenance direction are as follows:

calculating index offset under each terminal;

calculating the accumulated value of each index offset of all online terminals under each building;

the accumulated value of the root saw offset and the absolute value of the offset determine the maintenance index, the maintenance priority and the network adjusting direction of each building.

Further, a cable television network operation and maintenance system based on mean standard deviation comprises a CM terminal, a CMTS local side, a metropolitan area network, a switch and an acquisition server, and is characterized in that the CMTS local side is connected with at least one CM terminal, the CMTS local side is connected with the metropolitan area network, one end of the switch is connected with the acquisition server, and the other end of the switch is connected with the metropolitan area network.

Further, the CMTS local side may send the operation index collected by the CM terminal to the metropolitan area network.

Further, the switch realizes information interaction between the acquisition server and the metropolitan area network.

Compared with the prior art, the invention has the advantages that:

1. the positions and optimized indexes of the cable television bidirectional HFC network which need active operation and maintenance are accurately defined through CM terminal operation data acquisition and analysis, network topology data analysis and CM terminal index qualification comparison and analysis of different topology nodes, and the efficiency of the active operation and maintenance are improved.

Drawings

FIG. 1 is a flow chart of a cable TV network operation and maintenance method based on mean standard deviation;

FIG. 2 shows five operation indexes and qualification standards of a CM terminal according to another embodiment of the present invention;

FIG. 3 is a flowchart illustrating a procedure of determining the qualification of collected data according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating a CM terminal MAC set of different nodes according to an embodiment of the present invention;

FIG. 5 is a system diagram of an embodiment of the present invention;

FIG. 6 is a diagram illustrating a MAC data set of different node terminals according to a first embodiment;

FIG. 7 is a set of numbers of on-line terminals under a central optical unit according to an embodiment;

FIG. 8 is a set of embodiments in which fewer optical-mechanical area of the terminal is removed;

FIG. 9 is a run _ PR table of the lower terminal operation indicator of the optical transceiver according to the first embodiment;

FIG. 10 is a set of five target yields of the first exemplary embodiment of the present invention;

FIG. 11 is a graph showing the mean and standard deviation of the five indices of the optical engine in the first embodiment;

fig. 12 is a table of downlink reception level deviations of the online terminals in the butterfly bay garden 3 according to the first embodiment.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The cable television network operation and maintenance method based on the mean standard deviation is used for accurately delineating the position and the optimization index of the cable television bidirectional HFC network which needs active operation and maintenance, and improving the efficiency and the efficiency of the active operation and maintenance, and the method comprises the following steps with reference to FIG. 1:

s10: and determining a terminal acquisition index and a qualification criterion.

And (4) carrying out data acquisition on the CM terminal, and determining the type and the qualification standard of the acquisition index of the CM terminal.

As shown in fig. 2, the five collected indexes are: downlink receiving level, downlink signal-to-noise ratio, uplink transmitting level, uplink signal-to-noise ratio and uplink receiving level; wherein the qualified range of the downlink receiving level is determined to be 3dBmV +/-9, the qualified range of the downlink signal-to-noise ratio is determined to be more than or equal to 32dB, the qualified range of the uplink transmitting level is determined to be 48dBmV +/-6, the qualified range of the uplink signal-to-noise ratio is determined to be more than or equal to 28dB, and the qualified range of the uplink receiving level is determined to be 0dBmV +/-3.

S20: and intensively collecting terminal indexes.

And (3) carrying out intensive and uninterrupted acquisition and storage on five items of operation data of the CM terminal through a network management system, wherein the acquisition period is less than half an hour.

S30: and (4) performing qualification judgment on the terminal acquisition indexes in real time and storing the results into a database.

As shown in fig. 3, when the big data technology evaluates terminal data, a "qualified flag" field is added to each piece of collected data. And (3) acquiring a certain data input of the MC terminal and judging whether the acquired data is qualified, wherein if the acquired data is qualified, the field of the qualified mark is 1, otherwise, the field is 0, and writing the result into a database.

S40: the component management area-optical machine-building-terminal MAC topology and the node set.

And establishing a network topology by using a resource management system, and establishing a CM terminal set under different network nodes.

As shown in fig. 4, the resource management system is an operator basic information support system, and is responsible for establishing and maintaining physical connection information between all network cables and devices, establishing a coverage topological relation between management areas, optical machines, buildings, and CM terminals MAC based on the resource management system, and establishing a CM terminal MAC set under different nodes according to the topological relation.

The management area MAC set comprises a plurality of optical machines, a plurality of buildings are arranged below each optical machine, and a plurality of terminal MACs are arranged below each building.

S50: and calculating the on-line number of the optical machine node set terminal, and eliminating few values.

And calculating the number of on-line terminals in the terminal set under each optical node according to the topological relation between the management area, the optical machine, the building and the CM terminal MAC established by the resource management system so as to screen a target optical machine which is worth analyzing. Because too few on-line terminals under a single optical machine affect the accuracy of data analysis and cannot achieve the aims of active operation and maintenance and batch improvement of network quality, optical machine areas with few on-line terminals need to be removed.

The screening method is as follows:

and calculating the number of the online terminals in each optical machine terminal MAC set to form an optical machine terminal MAC set A.

The set a is denoted as a ═ { X1, X2, X3 … … Xn }, where: xi: the number of terminals of a single optical machine on line; n: and managing the number of the optical machines in the area. By the set A, the number of terminals under each optical machine can be clearly known.

Calculating median M and arithmetic mean of set ASelecting an online optical-mechanical area according to the following formula:

wherein: xi: the number of single ray machines is on-line terminal.

In order to eliminate the optical machine area with fewer terminals during the selection, the accuracy of data analysis is affected due to the fact that the number of terminals under part of optical machines is small, the requirement of active operation and maintenance cannot be met through the optical machines with the small number, and a new optical machine terminal MAC set B is formed after the optical machines with the small number are eliminated:

b ═ { X1, X2, X3 … … Xm }, where: xi: the number of single machines online; m: and eliminating the number of the optical machines after the optical machine area at the terminal is less.

S60: and calculating the monthly terminal qualification rate index of the optical machine node, calculating the mean value and the standard deviation, and selecting an index range optical machine area.

And calculating the qualification rate of each index of the optical computer node terminal, and enclosing the optical machine with low index operation qualification rate and the index needing operation and maintenance.

Calculating the average value of the qualification rate of each index of the terminal under the optical-mechanical set BAnd standard deviation S, delineating the index rangeThe indexes of the machine and the required operation and maintenance specifically comprise the following steps:

step 1: and calculating the index qualification rate of each online terminal under the optical machine set B by taking a natural month as a period, wherein the index qualification rate is represented by para _ PR, and judging whether the terminal is qualified or not by using the value of the index qualification rate para _ PR. In this example, the standard of the index qualification rate para _ PR is set to 70%, and if the calculated index qualification rate is greater than 70%, the index of the optical machine is judged to be qualified and is marked as a number "1"; otherwise, the product is judged to be unqualified and is recorded as the number 0.

Calculating the index qualification rate para _ PR according to the following formula:

and comparing the index qualification rate of the terminal under the optical machine with the established 70%, namely judging the running qualification index run _ PR of the terminal according to the following parameters:

step 2: according to the qualification conditions of the indexes of the terminal obtained by the calculation, calculating the operation qualification rate of each index of the terminal under each optical machine, wherein the operation qualification rate is recorded as X, and the X is calculated according to the following formula:

forming a light machine operation qualification rate set C:

cj ═ { X1, X2, X3 … … Xm }, where: xi: the terminal operation qualification rate of a single optical machine; m: collecting the number of B optical machines; j: operation index classification, 1-downlink receiving level, 2-downlink signal-to-noise ratio, 3-uplink transmitting level, 4-uplink receiving signal-to-noise ratio, and 5-uplink receiving level.

And step 3: calculating the operation qualification rate of the terminal indexes of the optical machines in the set CMean valueAnd standard deviation S, and selecting an operation and maintenance target optical machine according to the following rules:

and eliminating the optical machines which do not meet the conditions in the set C by the scheme to obtain a set D, wherein the set D is an operation and maintenance target optical machine set. Denoted Dj ═ { X1, X2, X3 … … Xms }; wherein: xi: the operation qualification rate of a certain index of the terminal of a single optical machine; ms: the number of optical machines needing operation and maintenance in the set C; j: operation index classification, 1-downlink receiving level, 2-downlink signal-to-noise ratio, 3-uplink transmitting level, 4-uplink receiving signal-to-noise ratio, and 5-uplink receiving level.

S70: and calculating the terminal index offset of each building in the target optical-mechanical area, and determining the maintenance buildings, the maintenance indexes and the optimization direction. And calculating the offset of the building terminal index covered by the optical machine with low operation qualified rate, and determining the maintenance building, the maintenance index and the optimization direction.

Calculating the offset delta x between the operation index and the standard value of each building terminal covered by the optical machine in the set Dj, and simultaneously calculating the accumulated offset value y according to the offset delta x: the specific scheme comprises the following steps:

step 1: calculating the index offset of each terminal:

step 2: calculating the online terminal index offset cumulative value of each building:

and determining a maintenance index, a maintenance priority and a network adjusting direction of each building according to the offset deltax and the accumulated offset value y. WhereinThe maintenance indexes are determined according to Dj classification; maintenance priority pressSorting from large to small; the network adjusting direction is determined according to the positive and negative attributes of the y value; network adjusts amplitude by max (| Δ x)_i|) proposed.

As shown in fig. 5, a cable television network operation and maintenance system based on a mean standard deviation includes a CM terminal 1, a CMTS local side 2, a metropolitan area network 3, a switch 4, and an acquisition server 5, where the CMTS local side 2 is connected to at least one CM terminal 1, the CMTS local side 2 is connected to the metropolitan area network 3, one end of the switch 4 is connected to the acquisition server 5, and the other end is connected to the metropolitan area network 3.

The CMTS office 2 may send the operation index data of the CM terminal 1 to the metropolitan area network 3. The exchange 4 realizes information interaction between the acquisition server 5 and the metropolitan area network 3. The operation index data of the CM terminal 1 collected by the CMTS local side 2 is stored in the collection server 5 through the switch 4, and the collection server 5 judges the collected index through a big data technology and stores the judgment result in the database.

The first embodiment is as follows:

for better understanding of the essence of the present invention, the technical contents of the present invention will be described in detail below by way of examples, but the contents of the present invention are not limited thereto.

The management area of the example has 15882 optical machines which are accessed to the CM terminal 464158.

And S10, determining the types and qualification criteria of the CM terminal acquisition indexes, and referring to FIG. 2, acquiring five items of data by each terminal, wherein each item of data has the qualification criteria.

S20: five items of operation data of all the online terminals are collected in full every half hour.

And S30, performing qualification judgment on the acquired data according to the table to form qualified mark data, wherein the qualified mark data is 1, and the unqualified mark data is 0.

And S40, forming different node terminal MAC data sets through the network resource management system as shown in the following table. Referring to fig. 6, different node terminals MAC data are aggregated.

S50: counting the number of the on-line terminals of the 15882 optical machines in one month to form a set A,

as shown in fig. 7, the mean value is calculated according to the on-line median M of each opto-mechanical terminal being 13min 7865 optical machines with the online number of all the terminals being larger than 13 are selected to form a set B, and the set B is shown in figure 8.

S60: calculating the on-line terminal index qualification rate para _ PR of all optical machines in the set B according to the following formula:

judging a terminal operation qualification index run _ PR according to the following parameters:

finally, the qualification rate para _ PR of each index of the online terminal of the optical machine is obtained, and is shown in figure 9;

as shown in fig. 10, the five indexes of 1-downlink receiving level, 2-downlink receiving signal-to-noise ratio, 3-uplink transmitting level, 4-uplink receiving signal-to-noise ratio and 5-uplink receiving level are calculated to calculate the respective pass rates of 7865 optical-mechanical five indexes, so as to form five sets of C1, C2, C3, C4 and C5.

As shown in FIG. 11, the mean values of five sets of C1, C2, C3, C4, and C5 were calculated, respectivelyAnd standard deviation S.

Push buttonThe formula selects target light machines from five sets of C1, C2, C3, C4 and C5 to form five target light machine sets of D1, D2, D3, D4 and D5. The number of the D1 sets is 273, the number of the D2 sets is 104, the number of the D3 sets is 266, the number of the D4 sets is 126, and the number of the D5 sets is 250.

S70: calculating the index deviation value of the corresponding terminal under each optical machine in the Dj set according to the index classification according to the following formula;

wherein, a_h: upper limit of standard value, a_l: lower limit of standard value.

If the qualification rate of the downlink receiving level of the butterfly bay 5# optical engine in the set D1 is 75%, the butterfly bay 5# optical engine area mainly maintains the downlink receiving level index.

As shown in fig. 6 and 12, the cumulative value of the downlink reception level offsets of all buildings covered by the "butterfly bay 5# optical machine" is calculated.

Wherein the accumulated offset of downlink receiving levels of all online terminals of 3 buildings in the butterfly bay garden isThe offset of all buildings is serious, and the building belongs to a preferential maintenance area.

The following conclusions are drawn from the above calculations:

1. the butterfly bay 5# optical machine needs to maintain the downlink receiving level;

2. the downstream reception level of the butterfly bay garden 3 is maintained first;

3. the downlink receiving level offset accumulation y of the butterfly bay garden 3 is a negative value, and the level needs to be raised;

4. butterfly bay garden 3 downlink level max (| Δ x)_iI) 5, an overall improvement of 5dB is suggested.

Has the advantages that: through the calculation of the steps S10-S60, a light machine set with five different maintenance indexes D1, D2, D3, D4 and D5 is formed, the number of target light machines converges from 15882 to 273, 104, 266, 126 and 250 respectively, and the purposes of accurately delineating the active operation and maintenance area and defining the operation and maintenance indexes are achieved. Meanwhile, the operation and maintenance target is further accurate to the buildings from the optical machine through the calculation of the step S70, and the maintenance priority, the maintenance direction, the index lifting range and the like of each building covered by the optical machine are indicated.

The scheme can effectively converge the operation and maintenance target in the cable television network with a certain scale, improves the operation and maintenance efficiency, reduces the operation and maintenance cost of the whole network, and realizes precise active operation and maintenance.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.