Portable IPTV service service quality diagnostic device and diagnostic method
Technical field
The present invention relates to networking technology area, particularly IPTV technical field, specifically refer to a kind of portable IPTV service service quality diagnostic device and diagnostic method.
Background technology
At present by the analysis of IP packet and then obtain the indexs such as the shake of its Internet Transmission, time delay and packet loss for the main method of IPTV service quality test, obtained the characteristic index of its IPTV Internet Transmission by the protocol type of further analyzing IP packet carrying, as MDI, DF and MLR etc. simultaneously.
The patent application " IPTV video quality monitoring method, device and system " that China Linked Network Communication Group Co., Ltd proposes adopts IPTV platform to initiate the service quality of the method Sampling network transmission link of test packet to user terminal, but because IP network transmission has uncertainty, the test result obtained not necessarily can reflect the service quality that real network is transmitted.
The patent application " a kind of IPTV video traffic method for supervising and system " of ZTE Co., Ltd in examining utilizes analyzes the actual Media Stream that receives to analyze network transmission quality in monitor terminal, but can not accomplish the comprehensive analysis of the whole network exact failure location and QOS and QOE.
Above-mentioned prior art is all the IPTV service quality test carried out based on general Service Quality Metrics, but these general Service Quality Metrics are except each producer there are differences in computational accuracy, also cannot reflect the Consumer's Experience of IPTV preferably.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming of the prior art, one is provided to utilize network transmission quality QOS index, and in conjunction with dissimilar stream media protocol analysis, obtain the Consumer's Experience QOE of heterogeneous networks Nodes in IPTV transmission network, and then realize IPTV whole network service quality guarantee end to end, and structure is simple, with low cost, application mode is easy, the portable IPTV service service quality diagnostic device had wide range of applications and diagnostic method.
In order to realize above-mentioned object, portable IPTV service service quality diagnostic device of the present invention has following formation:
This device comprises interconnective packet handling module and data packet analysis module, and described packet handling module connects IPTV network, and the output of described data packet analysis module is IPTV service service quality diagnostic result output.
In this portable IPTV service service quality diagnostic device, described packet handling module comprises network interface card and central processing unit, and described central processing unit is connected between described network interface card and described data packet analysis module, and described network interface card connects IPTV network.
In this portable IPTV service service quality diagnostic device, described data packet analysis module comprises accident analysis unit based on ACE framework and fault data library unit, the input of described accident analysis unit connects the output of described fault data library unit and described packet handling module respectively, and the output of described accident analysis unit is IPTV service service quality diagnostic result output.
In this portable IPTV service service quality diagnostic device, described fault data library unit is expert knowledge library.
In this portable IPTV service service quality diagnostic device, described accident analysis unit comprises network transmission quality and analyzes subelement, user experience analysis subelement and comprehensively analyze subelement, described network transmission quality analyzes subelement, user experience analysis subelement is connected described fault data library unit respectively with comprehensive subelement of analyzing, described network transmission quality is analyzed subelement and is also connected described packet handling module respectively with user experience analysis subelement, described network transmission quality is analyzed the output of subelement and is all connected described comprehensive analysis subelement input with the output of user experience analysis subelement, the output of described comprehensive analysis subelement is the output of this accident analysis unit.
In this portable IPTV service service quality diagnostic device, described device is added type IPTV service service quality diagnostic device, described added type IPTV service service quality diagnostic device has support rack type shell, and described packet handling module and data packet analysis module are all arranged in described support rack type shell.
In this portable IPTV service service quality diagnostic device, described device is notebook type IPTV service service quality diagnostic device, and notebook type IPTV service service quality diagnostic device is integrated is arranged in a laptop housing for this.
The present invention also provides a kind of method realizing the diagnosis of IPTV service service quality utilizing described device, comprises the following steps:
(1) the packet handling module described in is from connected IPTV Network Capture video streaming data packet and be sent to described data packet analysis module;
(2) the data packet analysis module described in is analyzed obtained packet, obtains IPTV service service quality diagnostic result.
This realizes in the method for IPTV service service quality diagnosis, and described data packet analysis module comprises accident analysis unit based on ACE framework and fault data library unit, described accident analysis unit comprises network transmission quality and analyzes subelement, user experience analysis subelement and comprehensively analyze subelement, described network transmission quality analyzes subelement, user experience analysis subelement is connected described fault data library unit respectively with comprehensive subelement of analyzing, described network transmission quality is analyzed subelement and is also connected described packet handling module respectively with user experience analysis subelement, described network transmission quality is analyzed the output of subelement and is all connected described comprehensive analysis subelement input with the output of user experience analysis subelement, described step (2) specifically comprises the following steps:
(21) network transmission quality described in is analyzed subelement and is carried out IP analysis to packet;
(22) network transmission quality described in is analyzed subelement and is carried out RTP analysis to packet;
(23) network transmission quality described in is analyzed subelement and is analyzed packet MPEG2-TS communication protocol;
(24) the network transmission quality analysis subelement described in carries out video content analysis and video frame type finds;
(25) network transmission quality described in is analyzed subelement and is found that result carries out frame of video quality analysis according to video frame type;
(26) the user experience analysis subelement described in carries out markov model analysis to video;
(27) analysis result that the comprehensive analysis subelement described in analyzes subelement and the acquisition of user experience analysis subelement according to described network transmission quality carries out the analysis of user's sense organ comprehensive quality.
Have employed portable IPTV service service quality diagnostic device and the diagnostic method of this invention, because its device comprises interconnective packet handling module and data packet analysis module, packet handling module connects IPTV network, and the output of described data packet analysis module is IPTV service service quality diagnostic result output.And described data packet analysis module comprises accident analysis unit based on ACE framework and fault data library unit, and accident analysis unit comprises network transmission quality analysis subelement, user experience analysis subelement and comprehensively analyze subelement, thus utilize this device and method can realize reliable bottom packet capturing, and the stream media protocol analysis utilizing data packet analysis module dissimilar, obtain the Consumer's Experience QOE of heterogeneous networks Nodes in IPTV transmission network, in conjunction with network transmission quality QOS, realize IPTV whole network service quality guarantee end to end, and the structure of portable IPTV service service quality diagnostic device of the present invention is simple, with low cost, the application mode of diagnostic method is easy, range of application is also comparatively extensive.
Accompanying drawing explanation
Fig. 1 is the structural representation of portable IPTV service service quality diagnostic device of the present invention.
Portable IPTV service service quality diagnostic device of the present invention is deployed in the Access Network of IPTV network and the schematic diagram at last one kilometer place by Fig. 2.
The ACE software frame building-block of logic that Fig. 3 adopts for portable IPTV service service quality diagnostic device of the present invention.
Fig. 4 is portable IPTV service service quality diagnostic method of the present invention schematic flow sheet in actual applications.
Embodiment
In order to more clearly understand technology contents of the present invention, describe in detail especially exemplified by following examples.
Referring to shown in Fig. 1, is the structural representation of portable IPTV service service quality diagnostic device of the present invention.
In one embodiment, this device comprises interconnective packet handling module and data packet analysis module, described packet handling module connects IPTV network, and the output of described data packet analysis module is IPTV service service quality diagnostic result output.This device can be added type or notebook type, added type IPTV service service quality diagnostic device has support rack type shell, described packet handling module and data packet analysis module are all arranged in described support rack type shell, and notebook type IPTV service service quality diagnostic device is then integrated to be arranged in a laptop housing.
The method realizing the diagnosis of IPTV service service quality of the device described in this execution mode is utilized to comprise the following steps:
(1) the packet handling module described in is from connected IPTV Network Capture video streaming data packet and be sent to described data packet analysis module;
(2) the data packet analysis module described in is analyzed obtained packet, obtains IPTV service service quality diagnostic result.
In one more preferably execution mode, described packet handling module comprises network interface card and central processing unit, and described central processing unit is connected between described network interface card and described data packet analysis module, and described network interface card connects IPTV network.Described data packet analysis module comprises accident analysis unit based on ACE framework and fault data library unit, the input of described accident analysis unit connects the output of described fault data library unit and described packet handling module respectively, and the output of described accident analysis unit is IPTV service service quality diagnostic result output.
In the preferred execution mode of one, described accident analysis unit comprises network transmission quality and analyzes subelement, user experience analysis subelement and comprehensively analyze subelement, described network transmission quality analyzes subelement, user experience analysis subelement is connected described fault data library unit respectively with comprehensive subelement of analyzing, described network transmission quality is analyzed subelement and is also connected described packet handling module respectively with user experience analysis subelement, described network transmission quality is analyzed the output of subelement and is all connected described comprehensive analysis subelement input with the output of user experience analysis subelement, the output of described comprehensive analysis subelement is the output of this accident analysis unit.Described fault data library unit is expert knowledge library.
Utilizing the device described in this preferred execution mode to realize in the method for IPTV service service quality diagnosis, described step (2) specifically comprises the following steps:
(21) network transmission quality described in is analyzed subelement and is carried out IP analysis to packet;
(22) network transmission quality described in is analyzed subelement and is carried out RTP analysis to packet;
(23) network transmission quality described in is analyzed subelement and is analyzed packet MPEG2-TS communication protocol;
(24) the network transmission quality analysis subelement described in carries out video content analysis and video frame type finds;
(25) network transmission quality described in is analyzed subelement and is found that result carries out frame of video quality analysis according to video frame type;
(26) the user experience analysis subelement described in carries out markov model analysis to video;
(27) analysis result that the comprehensive analysis subelement described in analyzes subelement and the acquisition of user experience analysis subelement according to described network transmission quality carries out the analysis of user's sense organ comprehensive quality.
In actual applications, portable IPTV service service quality diagnostic device of the present invention adopts high performance PC hardware structure, directly can carry out packet capturing analysis from data link layer, wherein solve the bottleneck in two performances in prior art, one is adopt high-performance specialty network interface card and CPU to ensure reliable bottom packet capturing; Two is adopt ACE(AdaptiveCommunicationEnvironment, adaptive communications environment) software frame ensure the concurrent high-performance analysis of process broad medium stream.Meanwhile, can according to the needs of user's purchase cost, the hardware structure of the various different performance of apolegamy flexibly, to meet the demand for different monitoring region.
Be core place of the present invention to the subsequent analyses process of IP packet, present invention employs the ACE software frame of high-performance concurrent processing, its concrete ACE software frame logical construction as shown in Figure 3.Simultaneously, the present invention combines the expert knowledge library algorithm formed according to IPTV service quality guarantee field practical experience, effectively the Internet Transmission QOS of IPTV and the QOE of Consumer's Experience is combined, provide and the phenomenon of the failure of Media Stream may be caused to describe and failure reason analysis.
Comprise the following steps in the method utilizing device of the present invention to carry out IPTV whole network service quality guarantee end to end:
First, at the program source of IPTV platform, dispose this product and carry out source monitoring, can adopt for emphasis channel monitor for a long time with common frequency channel poll monitoring method be configured.
Secondly, also can dispose this product at the key node place of IP transmission network and monitor, carry out monitoring in 24 hours for the network equipment or user media stream that need key monitoring.
Then; the probability that the Consumer's Experience caused due to core network fault declines is very low; most failure cause is distributed in Access Network and last one kilometer place; because at Access Network and last one kilometer place; operator can adopt the devices interconnect of multiple different vendor to back up usually; also be the most complicated part of network configuration, usual operation maintenance personnel is also difficult to judge the specifically transmission fault that causes of which network equipment.As shown in Figure 2, by portable IPTV service service quality diagnostic device of the present invention, can flexible deployment at Access Network or even last one kilometer place.Adopt portable design to also reduce the purchase cost of user, make user not need a large amount of buying, next network node place can be deployed to very easily after the fault having got rid of a certain region.
Finally, just can orient which apparatus for network node place to there occurs fault at according to the fault warning summary information analysis being deployed in heterogeneous networks Nodes in conjunction with the hardware characteristics information of network node.Concrete diagnostic process as shown in Figure 4.The feature of diagnostic method of the present invention is: 1, ACE software frame logical construction can by loading different protocol process module, Streaming Media encapsulated type under automatic identification heterogeneous networks transmission environment is also resolved, the RTSP etc. of RTSP, TCP encapsulation of IGMP, UDP encapsulation of IP, IP encapsulation of such as PPPoE encapsulation; 2, pass through configuration file flexibly, both can configure as the device of type of server, provide analysis data to report interface; Local display mode can be configured to again.
Have employed portable IPTV service service quality diagnostic device and the diagnostic method of this invention, because its device comprises interconnective packet handling module and data packet analysis module, packet handling module connects IPTV network, and the output of described data packet analysis module is IPTV service service quality diagnostic result output.And described data packet analysis module comprises accident analysis unit based on ACE framework and fault data library unit, and accident analysis unit comprises network transmission quality analysis subelement, user experience analysis subelement and comprehensively analyze subelement, thus utilize this device and method can realize reliable bottom packet capturing, and the stream media protocol analysis utilizing data packet analysis module dissimilar, obtain the Consumer's Experience QOE of heterogeneous networks Nodes in IPTV transmission network, in conjunction with network transmission quality QOS, realize IPTV whole network service quality guarantee end to end, and the structure of portable IPTV service service quality diagnostic device of the present invention is simple, with low cost, the application mode of diagnostic method is easy, range of application is also comparatively extensive.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.