TWI475878B - Dynamic Quality Analysis Method and System of Multimedia Signal in Heterogeneous High - speed Network Transmission - Google Patents

Description

Dynamic quality analysis method and system for multimedia signal transmission in heterogeneous high-speed network

The present invention provides an effective method and system for dynamically analyzing and diagnosing the quality of multimedia video services for the transmission of multimedia signals over heterogeneous high speed networks.

Multimedia video services, such as Internet Protocol Television (IPTV), mainly use broadband networks to deliver multimedia signals. At present, the well-known multimedia signal quality monitoring technology includes at least the following methods:

(1) continuously monitor the quality of video source services such as video broadcast service and video on demand at the head end of the video, and the source of the program is strictly before being transmitted from the video head to the user. Monitoring. However, this method does not ensure that the transmission performance of the broadband network (such as the backbone network and the access network) is poor, and the multimedia signal is discarded during the transmission of the network, causing the user to view the multimedia video. There is a discontinuity in the content.

(2) Deploying a multimedia signal probe on the user side, and actually monitoring and analyzing the received multimedia signal quality by simulating the behavior of the user terminal using the multimedia video service. Although this method can reflect the quality and experience of the user's actual use of services, it is still impossible to judge the real reason for the poor quality of multimedia video services because of the source of the program, the transmission network or the user. Poor equipment. In addition, the use of multimedia signal detectors to simulate and analyze the quality of the user's use of multimedia video services is a sampling test. In fact, this method does not cover all users. The use of a network management system to manage all users' multimedia video decoders can be seen as another way to view the quality of service from a user perspective, but the traditional network management system provides a centralized management architecture. It is unable to support the management of a very large number of network devices, but it is also necessary to continuously monitor the operational performance status of the above network devices.

When using the network management system to automatically analyze and diagnose the causes of poor quality of multimedia video services, the system usually has to combine the network organization (such as network topology) and the user service organization (such as the services rented by users). Information such as circuits and parameters can quickly analyze the real cause of alarms generated by the above-mentioned network from the alarms such as obstacles or performance degradation of network devices, and these alarms will cause users to use multimedia video services. What types of quality problems are generated so that the information system can actively remove the barriers before the user perceives and reports the obstacles. However, existing commercial network management systems usually only provide monitoring functions of network devices without linking user service fabric information, so that the user service impact analysis function cannot be accurately provided.

It can be seen that there are still many shortcomings in the above-mentioned methods of use, which is not a good design, but needs to be improved.

In view of the shortcomings derived from the above-mentioned conventional methods, the inventor of the present invention has improved and innovated, and after years of painstaking research, he finally successfully developed a dynamic quality analysis method for the transmission of a multimedia signal in heterogeneous high-speed network. system.

A dynamic quality analysis method and system for achieving heterogeneous high-speed network transmission of multimedia signals of the above invention, comprising one or more multimedia video decoder performance information monitoring devices, an integrated network resource performance abnormality warning collector, a proactive Service quality and obstacle problem parser, a service barrier inference rule knowledge base, a heterogeneous network fabric and topology information module, a multimedia video service fabric information module, a network monitoring dynamic modulation module One to more multimedia video performance information monitoring devices, a heterogeneous network device performance information monitoring device, and a video head end performance information monitoring device. According to the quality information of the collected multimedia video decoders, the key points of the problem of actually providing the service circuit are analyzed. When the service quality and obstacle problem analyzers are regularly analyzed, (A) when the quality history data of the multimedia signal decoder is found to be poor in quality, Automatically refer to the heterogeneous network fabric topology information, and query the quality parameters of all relevant decoder groups of the corresponding access device. When the number of persistent bad signals of the multimedia signal decoder exceeds the critical value 2, the access is determined according to the rules. The end device is abnormal; (B) Otherwise, it will continue to query whether the quality parameters of all relevant decoder groups of the corresponding backbone device are bad. When the number of bad quality exceeds the critical value of 3, the backbone device is abnormal according to the existing knowledge base rules. (C) If not, continue to query the relevant decoder group of the corresponding video head end. When the quality defect number exceeds the critical value of 4, it is judged as the video head end device abnormal according to the existing knowledge base rules, otherwise it will be regarded as A single decoder is of poor quality. (D) In addition, for the quality parameters of all decoders corresponding to the relevant program source, if the number of defects exceeds the critical value of 5, the program source is abnormal according to the existing knowledge base rules. The results of this study will serve as an important basis for maintenance during quality anomalies.

According to another feature of the present invention, the present invention provides a network monitoring dynamic modulation module, which is not easy to detect in a large monitoring period for some monitoring data because of the characteristics of instantaneous movement, so in a special inspection situation The monitoring period can be flexibly adjusted, and detailed monitoring is started for a specific device to find out whether the monitored value in the period exceeds a critical value or other anomalies to confirm the root cause of the possible quality abnormality. In addition, when the proactive service quality and obstacle problem analyzer has diagnosed a certain problem of a certain device, it can also transmit action instructions to each device performance information monitoring device, and execute maintenance instructions for the device in time to ensure the quality of the multimedia video service.

According to another feature of the present invention, in order to solve the problem that the conventional system is inefficient in a large number of nanotube devices and the system is unbalanced load caused by a large number of monitoring, in addition to the distributed network management structure, the number of management tubes is effectively controlled. The invention also uses a smart job distributor, which can effectively allocate the working time schedule in the regular monitoring program, solve the problem of unbalanced resource load of the system simultaneously starting the monitoring operation, and improve the system operation stability.

The service quality of video and audio plays an important role in providing multimedia video services. FIG. 1 is a schematic diagram of a dynamic quality analysis method and system for transmitting a multimedia signal in a heterogeneous high-speed network, including one or more a multimedia video decoder performance information monitoring device 112, an integrated network resource performance abnormality warning collector 108, a proactive service quality and obstacle problem parser 110, a service barrier inference rule knowledge base 106, a heterogeneous network The configuration and topology information module 102, a multimedia video service fabric information module 104, a network monitoring dynamic modulation module 118, one or more heterogeneous network performance information monitoring devices 114, and a video head end performance Information monitoring device 116.

A wide variety of devices are required to provide a multimedia service network. The performance information monitoring required in the existing management network is considered, and the number of host controllers is limited. The distributed architecture is divided into one or more multimedia video decoder performance information monitoring. The device 112, one or more heterogeneous network performance information monitoring devices 114, and a video head end performance information monitoring device 116. The distributed architecture can cooperate with existing devices in addition to devices that can effectively cover all multimedia service networks. The division of labor is managed, and the system monitors the information monitored by the monitoring devices distributed throughout the network through the integrated network resource performance abnormality warning collector 108, which is used as a basis for judging the quality of the multimedia service.

The integrated network resource performance abnormality warning collector 108 is connected to one or more multimedia video decoder performance information monitoring devices 112. The performance information monitoring device 112 periodically collects quality performance information of the client multimedia signal decoder through the network (eg: PacketLoss/Jitter/Delay..), and can judge the network status according to any value as a reference for the service quality information; the integrated network resource performance abnormality warning collector 108 collects all abnormal information and submits it to the proactive The service quality and obstacle problem analyzer 110 judges that Figure 4 is a flow chart of the service quality obstacles. When the multimedia signal decoder is found to have poor quality, 302 (for example, PacketLoss is greater than the decoder signal quality judgment threshold), Querying the corresponding access device through the heterogeneous network fabric and the topology information module 102, and calculating the quality parameters of all related decoder groups below the device, when the ratio of the number of persistent bad signals of the multimedia signal decoder exceeds When the terminal device service abnormality determination critical value is 304, the access terminal device abnormality is determined according to the rule. 14.

If the ratio of the number of bad devices does not exceed the critical value of the service device abnormality determination, continue to query whether the quality parameters of all relevant decoder groups of the corresponding backbone device are bad, and the ratio of the number of bad quality exceeds the threshold of abnormal service of the backbone device service. When the value is 306, the backbone device exception 316 is determined according to the existing knowledge base rules.

If the number of bad devices does not exceed the threshold value of the service abnormality determination of the backbone device, continue to query the relevant decoder group of the corresponding video head end, and when the ratio of the quality defect number exceeds the critical value of the head end device service abnormality determination threshold 308, then The knowledge base rule is judged as the video headend device exception 318, otherwise it will be regarded as a single decoder quality defect 310.

For the decoder with poor quality, the quality parameters of all decoders corresponding to the program source are queried. If the ratio of the bad number exceeds the threshold value of the program source service abnormality determination, the program source exception 320 is determined according to the existing knowledge base rules. The results of this study will serve as an important basis for maintenance during quality anomalies.

If, in the foregoing parsing process, the quality fault of the client is determined to be the access device service exception 314, and the interface is mainly attributed to the access barrier of the access device, the service barrier inference rule knowledge base is known to The interface is used as a reset command to restore normal service. Therefore, the dynamic modulation module can be monitored immediately through the network, and the device performance information monitoring device can be automatically updated to eliminate the customer quality barrier.

FIG. 2 is an operation framework 200 of a new operation, which includes a smart job distribution adjuster 202, a job scheduler 204, and a data collection module 206. In the actual multimedia video monitoring operation process, when a new job is added Through the intelligent job distribution adjuster 202, the monitoring operation is added to the job scheduler 204, and the normal quality monitoring data collection module is executed according to the scheduling time.

Figure 3 is a diagram of the operation of the intelligent job distribution regulator. In order to avoid excessive transient load on the system caused by excessive registration, the system automatically assigns the start time of the operation within the monitoring period, so that each period of the regular monitoring period is valid. The start time of the job can be evenly distributed in the overall monitoring operation time interval 210, the interval between the start time of each job T=Maximum (monitoring period/total number of jobs, one thousandth of a second), when the monitoring period/total number of jobs <One thousandth of a second, the time interval is one thousandth of a second. In this case, every one thousandth of a second interval, more than one job may be executed at the same time, that is, the job will be sequentially Arranged at each time interval, and the time interval T between jobs is the lower limit of one thousandth of a second. This can effectively solve the imbalance of system resource load and improve the system operation stability.

If the quality of the multimedia signal decoder is actually poor, and the service appliance has an abnormal state (the monitoring value is greater than a certain threshold), the periodic monitoring may be difficult to detect that the circuit is abnormal due to its large monitoring period. Phenomenon, Figure 5 is a schematic diagram of this phenomenon. The abnormal state point of the dotted line in Figure 5 occurs between the monitoring points, but the monitoring value obtained at the time of the normal monitoring cycle is still less than the critical value, and the possible detection cannot be detected. Abnormal phenomenon; therefore, under this condition, the system can monitor the dynamic modulation module 118 through the network, adjust its monitoring period flexibly within a certain period of time, and start detailed monitoring for specific equipment, as shown in the monitoring value of the dotted line in Figure 5, In the case of detailed monitoring, a phenomenon greater than the critical value is detected, and the detection rate of the abnormal state is increased to find an abnormal phenomenon 400 in which the monitoring value exceeds the critical value during the period, which can provide a source of confirmation of possible quality abnormality. in accordance with.

The prior art mainly focuses on monitoring the quality of the program source of the multimedia service network broadcast to ensure that the quality of the program source provided by the online line is normal, and the monitoring position is mainly for the location of the head end server and the central office access device, and the actual response is not true. The quality status of the client, but in the process of actually transmitting the service, the client's perception of the service and various quality problems that may occur (such as abnormal decoder performance or client device obstacles) are less easy to grasp, so There are still deficiencies. In addition, the behavior of the multimedia video service is simulated and analyzed by the client to actually monitor and analyze the received multimedia signal quality. Although this method can reflect the quality and experience of the user's actual use of the service (ie, Quality of Experience), it is still unable to determine the true cause of the poor quality of the multimedia video service, and it is a sampling test, which cannot be completely covered. To all users. The dynamic quality analysis method and system for transmitting the multimedia signal in the heterogeneous high-speed network by the present invention have the following advantages when compared with other conventional technologies:

1. The invention utilizes the multimedia video decoder to effectively monitor the client, can fully grasp the quality condition of the client device, and can effectively solve the problem of imbalance of system resource load through the smart job distributor when managing a large number of client devices. Improve system operation stability.

2. The invention utilizes the distributed architecture to monitor the performance of the multimedia service network device, and can perform performance monitoring on the client, the access terminal, the backbone device and the headend video server respectively, covering comprehensive, and fully grasping the multimedia video service circuit. Quality status.

3. The present invention can effectively locate service barriers by automatically analyzing the performance of various network devices through a collection of performance information through a dynamic quality analysis method.

The detailed description of the present invention is intended to be illustrative of a preferred embodiment of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

To sum up, this case is not only innovative in terms of technical thinking, but also has many of the above-mentioned functions that are not in the traditional methods of the past. It has fully complied with the statutory invention patent requirements of novelty and progressiveness, and applied for it according to law. Approved this invention patent application, in order to invent invention, to the sense of virtue.

102. . . Heterogeneous network fabric and topology information model

104. . . Multimedia Video Service Organization Information Module

106. . . Service barrier inference rule knowledge base

108. . . Integrated network resource performance abnormality warning

110. . . Proactive service quality and obstacles

112. . . Multimedia Video Decoder Performance Information Monitor

114. . . Heterogeneous network performance information monitoring device

116. . . Video head end performance information monitoring device

118. . . Network monitoring dynamic modulation module

200. . . Smart job distributor architecture diagram

202. . . Smart job distribution adjuster

204. . . Job scheduler

206. . . Quality data collection module

210. . . Smart job assignment adjuster

302. . . Judging the quality of the multimedia signal decoder is

304. . . Determine whether the quality of the multimedia signal decoder associated with the receiving device is abnormal.

306. . . Determine whether the quality of the multimedia signal decoder associated with the backbone device is abnormal.

308. . . Determine whether the quality of the multimedia signal decoder associated with the head end device is abnormal.

310. . . Determine whether the quality of the multimedia signal decoder associated with the same program source is abnormal

312. . . Single multimedia signal decoder quality is not

314. . . Pickup device service exception

316. . . Abnormal backbone equipment service

318. . . Headend device service exception

320. . . The source quality of the program is abnormal.

400. . . Network monitoring dynamic modulation module schematic

1 is a block diagram of a dynamic quality analysis system of a multimedia signal conversion decoder according to the present invention;

2 is a flow chart of the performance information monitoring device and the intelligent job distribution of the present invention;

Figure 3 is a functional diagram of a smart job assignment adjuster;

4 is a schematic flow chart of a dynamic quality analysis method for transmitting a multimedia signal in a heterogeneous high-speed network according to the present invention;

Figure 5 is a schematic diagram of monitoring of the network monitoring dynamic modulation module.

102. . . Heterogeneous network fabric and topology information model

104. . . Multimedia Video Service Organization Information Module

106. . . Service barrier inference rule knowledge base

108. . . Integrated network resource performance abnormality warning

110. . . Proactive service quality and obstacles

112. . . Multimedia Video Decoder Performance Information Monitor

114. . . Heterogeneous network performance information monitoring device

116. . . Video head end performance information monitoring device

118. . . Network monitoring dynamic modulation module

Claims (8)

A dynamic quality analysis method for transmitting a multimedia signal to a heterogeneous high-speed network, the method comprising: (a) periodically monitoring quality information of the multimedia signal decoder, and analyzing whether the multimedia signal decoder is of poor quality; (b) decoding the multimedia signal The quality of the device continues to be poor, and the access device corresponding to the multimedia signal decoder is obtained, and whether the poor quality of the multimedia signal decoder is caused by the abnormality of the service of the receiving device; (c) when the quality of the multimedia signal decoder continues to be poor Regardless of the access device, the backbone device corresponding to the multimedia signal decoder is obtained, and whether the poor quality of the multimedia signal decoder is caused by the abnormal service of the backbone device; (d) when the quality of the multimedia signal decoder continues to be poor, and The backbone device is irrelevant, and the head end server corresponding to the multimedia signal decoder is obtained, and then it is judged whether the quality of the multimedia signal decoder is poor due to abnormality of the head end device service, otherwise it is a single multimedia signal decoder obstacle; and (e) when multimedia The quality of the signal decoder continues to be poor, and the corresponding Program source associated media signal decoder, the signal quality of the decoder obstacle is determined whether the multimedia guide due to abnormal program source quality. The method for analyzing a dynamic quality of a multimedia signal transmitted by a heterogeneous high-speed network according to the first aspect of the patent application, wherein the step (a) is whether the packet leakage rate of the multimedia signal decoder is greater than the decoder signal quality. The threshold value is determined to determine the quality of the multimedia decoder. When the quality information of the multimedia signal decoder is greater than the decoder signal quality defect determination threshold, the signal quality of the multimedia decoder is determined to be poor. A dynamic quality analysis method for transmitting a multimedia signal according to claim 1 in a heterogeneous high-speed network, wherein the step (b) is to find all the multimedia signal decoder groups corresponding to the access device. If the ratio of the number of persistent bad signals of the multimedia signal decoder of the group exceeds the threshold value of the service abnormality determination of the access device, it is determined that the service of the access device is abnormal. A dynamic quality analysis method for transmitting a multimedia signal in a heterogeneous high-speed network according to claim 1, wherein the step (c) is to find all the multimedia signal decoder groups corresponding to the backbone device. If the ratio of the number of persistent bad numbers of the multimedia signal decoder of the group exceeds the threshold value of the abnormal service of the backbone device, the service of the backbone device is determined to be abnormal. A dynamic quality analysis method for transmitting a multimedia signal in a heterogeneous high-speed network according to the first aspect of the patent application, wherein the step (d) is to find all the multimedia signal decoder groups corresponding to the head end device, when If the ratio of the number of persistent bad numbers of the multimedia signal decoder of the group exceeds the critical value of the head end device service abnormality determination, it is determined that the head end device service is abnormal, otherwise it is a single multimedia signal decoder obstacle. A dynamic quality analysis method for transmitting a multimedia signal in a heterogeneous high-speed network according to claim 1, wherein the step (e) is to find all the multimedia signal decoder groups corresponding to the program source. If the ratio of the number of persistent bad numbers of the multimedia signal decoder of the group exceeds the threshold value of the program source quality abnormality determination, it is determined that the quality of the program source is abnormal. A dynamic quality analysis system for transmitting multimedia signals over heterogeneous high-speed networks, comprising: one or more multimedia video decoder performance information monitoring devices for obtaining performance information of the multimedia video decoder; one or more heterogeneous networks Device performance information monitoring device for collecting performance information of the access device and the backbone device; a video head end performance information monitoring device for collecting performance information of the head end server device; and an integrated network resource performance abnormality alert collection And a warning information for receiving one or more multimedia decoders, and warning information of one or more performance information monitoring devices during the collecting process; a service barrier inference rule knowledge base for providing inference knowledge of known service obstacle rules A heterogeneous network fabric and topology information module for providing existing network organization and topology information; a multimedia video service fabric information module for providing a network corresponding to multimedia services Organization and topology information; a proactive service quality and obstacle problem parser to diagnose quality Problem may point source; and a dynamic modulation network monitoring module, the monitoring period can be flexibly adjusted equipment for a particular disorder, to diagnose an apparatus to perform operations for instructions on a service circuit. A dynamic quality analysis system for transmitting a multimedia signal in a heterogeneous high-speed network according to claim 7 of the patent application, in the multimedia video decoder performance information monitoring device, performing work smart distribution, which includes the following but not limited to The module is a smart job distribution adjuster, which is used to determine the job schedule after the new job is added, so that the monitoring work schedule can be evenly distributed in the monitoring period, and the execution time can be automatically dispersed to effectively solve the system resource load. Unbalanced problem; a job scheduler that schedules regular monitoring of the execution time of the job; and a data collection module that collects performance quality information on a regular basis.