CN102143389A - Quality assurance (QA) system and method of internet protocol television (IPTV) services - Google Patents
Quality assurance (QA) system and method of internet protocol television (IPTV) services Download PDFInfo
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Abstract
The invention relates to a quality assurance (QA) system of internet protocol television (IPTV) services, comprising a management server which is arranged at the head end of an IPTV system and subjective quality estimation devices which are arranged at each IPTV terminal respectively, wherein the management server is connected with the subjective quality estimation devices by IPTV system networks, and the subjective quality estimation devices are integrated into a service quality measurement and control module in a set top box (STB) of each IPTV terminal. The invention also relates to a QA method of IPTV services by using the system. In the method, the service quality measurement and control module is used for measuring and controlling the service quality of a video which is played by the STB of the IPTV terminal so as to acquire the subjective quality score; and the subjective quality score is compared with a threshold, and if the subjective quality score is lower than the threshold, an alarm is sent out, thus realizing subjective quality estimation for the client of the IPTV system, and perfecting the quality detection modes of the IPTV services. The system provided by the invention is simple in structure, and the method provided by the invention is low in operating cost and easy and convenient in application modes.
Description
Technical field
The present invention relates to networking technology area, particularly the Web TV technical field specifically is meant a kind of IPTV QoS guarantee system and method for guaranteeing quality.
Background technology
Because IPTV is the media business of TV class, the user wishes to obtain the service level as cable TV, comprises the picture quality of channel switch speed, program, the fluency of broadcast etc.And traditional broadband services quality-monitoring lays particular emphasis on the monitoring of data link layer and network layer, can't directly reflect the subjective feeling of user to the IPTV business, therefore can not satisfy the demand of IPTV quality-monitoring.
Professional for conventional telecommunications, (quality of service QoS) is often referred to network performance, especially network transmission performance to quality of service.And because IPTV is a kind of upper layer application business based on the common electrical telecommunications services, traditional QoS can't satisfy the assessment to end user's impression, therefore present industry often adopts Quality of experience, and (quality of experience QoE) describes the quality of service of using towards the end user.
Still do not have international norm at present the IPTV quality of service defined, still continued to use ITU-T P.10/G.100 in to the definition of QoE.IPTV GSI also points out, the QoE of IPTV as shown in Figure 1, should comprise subjective evaluation quality and objective evaluation quality two parts content simultaneously, and the former mainly assesses video quality according to the human visual system, assesses Quality of experience by subjective feeling; The latter then can define various objective indicators, and adopts corresponding testing tool to measure.
The professional monitoring mode that adopts usually of IPTV is by realize monitoring at each network node place increase equipment at present, the equipment cost of system is than higher, monitoring means only is confined to the network node place simultaneously, can not dispose monitoring means by each IPTV user terminal, therefore, be difficult to realize video quality assessment for user's subjective feeling.And maintenance, test for last kilometer still depend on handheld terminal and finish to the doorstep, and maintenance cost is high.Thus further applying of IPTV formed obstacle.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, providing a kind of can effectively assess user's subjective feeling, improve existing IPTV quality of service detection mode, simple in structure, operating cost is cheap, IPTV QoS guarantee system and method for guaranteeing quality that application mode is easy.
In order to realize above-mentioned purpose, IPTV QoS guarantee system of the present invention has following formation:
This system comprises the management server that is arranged at the IPTV system headend and is arranged at the subjective quality assessment device of each IPTV terminal that described management server connects described each subjective quality assessment device by the IPTV grid.
In this IPTV QoS guarantee system, described subjective quality assessment device is a service quality control module, and described service quality control module is integrated in the IPTV terminal set top box.
In this IPTV QoS guarantee system, described service quality control module comprises code detection unit, resolution detecting unit, picture distortion detection unit, flow media transmission performance detecting unit and statistic unit, described code detection unit, resolution detecting unit, picture distortion detection unit all are connected described statistic unit with the flow media transmission performance detecting unit, and described statistic unit is by IPTV grid connection management server.
In this IPTV QoS guarantee system, described system also comprises an objective quality assessment device, and described objective quality assessment device is connected between described management server and the described subjective quality assessment device.
In this IPTV QoS guarantee system, described objective quality assessment device is a video analysis equipment, described video analysis equipment is arranged on the node of IPTV system headend and terminal room, and the analysis result output of this video analysis equipment is connected in the management server of IPTV system headend.
In this IPTV QoS guarantee system, described video analysis equipment comprises: content and quality of service control detecting unit, stream media quality detecting unit, transmission quality detecting unit, network quality detecting unit and link-quality detecting unit, described content all is connected described management server with the testing result output of quality of service control detecting unit, stream media quality detecting unit, transmission quality detecting unit, network quality detecting unit and link-quality detecting unit.
The present invention also provides a kind of and realizes the method for IPTV service quality guarantee based on described system, and wherein, described subjective quality assessment device is one to be integrated in the service quality control module in the IPTV terminal set top box, and described method may further comprise the steps:
(1) described service quality control module carries out service quality observing and controlling to the in progress video of IPTV terminal set top box, obtains the subjective quality score;
(2) described service quality control module compares subjective quality score and the preset threshold value that is obtained, if be lower than threshold value, then the service quality control module sends alarm.
In the method for this IPTV service quality guarantee, described service quality control module comprises code detection unit, resolution detecting unit, picture distortion detection unit, flow media transmission performance detecting unit and statistic unit, described code detection unit, resolution detecting unit, picture distortion detection unit all are connected described statistic unit with the flow media transmission performance detecting unit, and described step (1) specifically may further comprise the steps:
(11) code detection unit, resolution detecting unit, picture distortion detection unit and flow media transmission performance detecting unit detect in progress video, and each testing result is sent to described statistic unit;
(12) described statistic unit averages described each testing result, obtains the subjective quality score.
In the method for this IPTV service quality guarantee, described system comprises that also one is connected in the objective quality assessment device between described management server and the described subjective quality assessment device, described objective quality assessment device is one to be arranged at the video analysis equipment on the node of IPTV system headend and terminal room, and described method is further comprising the steps of afterwards in step (2):
(3) the described service quality control module video information that will be lower than threshold value is sent to described video analysis equipment;
(4) network state in this path, service quality control module place of described video analysis Equipment Inspection.
(5) network performance of described video analysis Equipment Inspection place node;
(6) described video analysis equipment is sent to management server with described meshed network performance, path network state and the video information received;
(7) after described management server gathers the information that each video analysis equipment returns, show the abort situation in the entire I PTV grid.
In the method for this IPTV service quality guarantee, described video information video name, video quality information and network quality information.
In the method for this IPTV service quality guarantee, described step (4) specifically is meant: the data packet drop in this path, service quality control module place of described video analysis Equipment Inspection.
In the method for this IPTV service quality guarantee, described method is further comprising the steps of in step (7) back:
(8) described management server is determined end-user experience information according to the meshed network performance, path network state and the terminal video information that obtain;
(9) reason of described management server analysis of failure generation;
(10) described management server produces reason based on described fault and proposes the fault exclusion program.
In the method for this IPTV service quality guarantee, described end-user experience information comprises mosaic degree, blank screen and a card degree.
In the method for this IPTV service quality guarantee, described step (9) specifically is meant: described management server analysis of failure produces the relation between source and the described end-user experience information.
Adopted the IPTV QoS guarantee system of this invention, the subjective quality assessment device that it comprises the management server that is arranged at the IPTV system headend and is arranged at each IPTV terminal, described management server connects described each subjective quality assessment device by the IPTV grid, and this subjective quality assessment device is one to be integrated in the service quality control module in the IPTV terminal set top box.Thereby can utilize the service quality control module of this system that the in progress video of IPTV terminal set top box is carried out service quality observing and controlling, obtain the subjective quality score, subjective quality score and the preset threshold value that is obtained compared, if be lower than threshold value, then the service quality control module sends alarm again.Thereby realize subjective quality assessment, improve IPTV quality of service detection mode of the prior art for the IPTV system client.IPTV QoS guarantee system of the present invention is simple in structure, and this method for guaranteeing quality operating cost is cheap, and application mode is easy.
Description of drawings
Fig. 1 is QoE (Quality of experience) range of definition schematic diagram of IPTV.
Fig. 2 is the structural representation of IPTV QoS guarantee system of the present invention.
Fig. 3 is the structural representation of the service quality control module in the IPTV QoS guarantee system of the present invention.
Fig. 4 be in the IPTV QoS guarantee system of the present invention IPTV quality of service model and IPTV protocol stack concern schematic diagram.
Fig. 5 is the flow chart of steps of IPTV QoS guarantee method of the present invention.
Fig. 6 is IPTV QoS guarantee system of the present invention provinces and cities' two-tier system schematic diagram in actual applications.
Fig. 7 is an IPTV QoS guarantee system of the present invention prefecture-level system architecture schematic diagram in actual applications.
Fig. 8 is the external interface schematic diagram of IPTV QoS guarantee system of the present invention.
Fig. 9 is the schematic diagram of the cluster analysis model that fault location adopted in the IPTV QoS guarantee method of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
See also shown in Figure 2ly, be the structural representation of IPTV QoS guarantee system of the present invention.
In one embodiment, this IPTV QoS guarantee system comprises the management server that is arranged at the IPTV system headend and is arranged at the subjective quality assessment device of each IPTV terminal that described management server connects described each subjective quality assessment device by the IPTV grid.Described subjective quality assessment device is a service quality control module, and described service quality control module is integrated in the IPTV terminal set top box.As shown in Figure 3, described service quality control module comprises code detection unit, resolution detecting unit, picture distortion detection unit, flow media transmission performance detecting unit and statistic unit, described code detection unit, resolution detecting unit, picture distortion detection unit all are connected described statistic unit with the flow media transmission performance detecting unit, and described statistic unit is by IPTV grid connection management server.
A kind of preferred embodiment in, as shown in Figure 2, described system also comprises an objective quality assessment device, described objective quality assessment device is connected between described management server and the described subjective quality assessment device.This objective quality assessment device is a video analysis equipment, and described video analysis equipment is arranged on the node of IPTV system headend and terminal room, and the analysis result output of this video analysis equipment is connected in the management server of IPTV system headend.As shown in Figure 4, described video analysis equipment comprises: content and quality of service control detecting unit, stream media quality detecting unit, transmission quality detecting unit, network quality detecting unit and link-quality detecting unit, described content all is connected described management server with the testing result output of quality of service control detecting unit, stream media quality detecting unit, transmission quality detecting unit, network quality detecting unit and link-quality detecting unit.
The present invention also provides a kind of method that realizes the IPTV service quality guarantee based on described system.
In one embodiment, as shown in Figure 5, described method may further comprise the steps:
(1) described service quality control module carries out service quality observing and controlling to the in progress video of IPTV terminal set top box, obtains the subjective quality score;
(2) described service quality control module compares subjective quality score and the preset threshold value that is obtained, if be lower than threshold value, then the service quality control module sends alarm.
Wherein, described step (1) specifically may further comprise the steps:
(11) code detection unit, resolution detecting unit, picture distortion detection unit and flow media transmission performance detecting unit detect in progress video, and each testing result is sent to described statistic unit;
(12) described statistic unit averages described each testing result, obtains the subjective quality score.
In a kind of more preferably execution mode, as shown in Figure 5, described method is further comprising the steps of afterwards in step (2):
(3) the described service quality control module video information that will be lower than threshold value is sent to described video analysis equipment;
(4) network state in this path, service quality control module place of described video analysis Equipment Inspection.
(5) network performance of described video analysis Equipment Inspection place node;
(6) described video analysis equipment is sent to management server with described meshed network performance, path network state and the video information received;
(7) after described management server gathers the information that each video analysis equipment returns, show the abort situation in the entire I PTV grid.
Wherein, described video information video name, video quality information and network quality information.
In a kind of further preferred embodiment, described step (4) specifically is meant: the data packet drop in this path, service quality control module place of described video analysis Equipment Inspection.
In a kind of preferred execution mode, described method is further comprising the steps of in step (7) back:
(8) described management server is determined end-user experience information according to the meshed network performance, path network state and the terminal video information that obtain;
(9) reason of described management server analysis of failure generation;
(10) described management server produces reason based on described fault and proposes the fault exclusion program.
Wherein, described end-user experience information comprises mosaic degree, blank screen and a card degree.
A kind of further preferred embodiment in, described step (9) specifically is meant: described management server analysis of failure produces the relation between source and the described end-user experience information.
In actual applications, IPTV QoS guarantee system of the present invention as shown in Figure 6, is divided into two-tier system, and bottom is the acquisition server of each districts and cities, carries out the collection of the monitoring information and the warning information of prefectures and cities' set-top box, and reports to management server; The upper strata is the management server in province, and the information that prefectures and cities' acquisition server reports is preserved, and carries out Macro or mass analysis simultaneously.
System realizes the Authority and Domain Based Management management, and districts and cities O﹠M personnel only can be configured operation to the monitoring equipment of these districts and cities and check with performance alarm, haves no right to check the information that other districts and cities are relevant.Provincial user can operate the various information of checking to prefectures and cities of the whole province.
The set-top box monitoring modular is incorporated in the set-top box, realizes the deployment of monitoring modular by set-top box edition upgrading.Management server will distribute the acquisition server address to give set-top box according to the usersaccount information of set-top box simultaneously.After this set-top box reports the variety of event notice with the direct and corresponding direct communication of acquisition server.
As shown in Figure 7, the bottom of IPTV QoS guarantee system constitutes at acquisition server, the video flowing of gathering direct broadcast band by the CertusNet video analyzer at districts and cities' Centroid carries out quality-monitoring, carries out the whole network by the services quality monitoring module and monitor end to end on each set-top box.Dotted line is represented group broadcasting video frequency source bang path among Fig. 7, and chain-dotted line is represented video flowing analytical information and warning message bang path, and double dot dash line represents that set-top box is alarmed and detection information is obtained the path.
Services quality monitoring module on the set-top box realizes the real-time monitoring to each set-top box of the whole network, comprises the video quality monitoring, reaches the set-top box running status alternately with EPG.Will be during situation such as, channel handoff response overlong time poor excessively at video quality, set-top box running status are unusual to central server report and alarm information.
Acquisition server and set-top box are carried out alternately, Real-time Alarm information and monitoring information that the gathering machine top box reports.Acquisition server adopts is responsible for balanced mode, is convenient to the expansion of power system capacity.
As shown in Figure 4, the parameter model of IPTV QoS guarantee system of the present invention has covered all levels of OSI 7 layer models.Wherein, the layering quality that objective QoE is correlated with is corresponding to each agreement in the protocol stack of IPTV, and the mass parameter of each level can obtain by gathering corresponding protocols and field thereof.
Objective QoE comprises the content of following several respects among the present invention:
1, content quality and quality of service control: mainly refer to the quality of contents such as direct broadcast band, time shift program, VOD program, picture, literal and the performance index of professional control.For example, need to gather and analyzing medium coding parameter, resolution parameter etc. for the direct broadcast band quality; For quality of service control, need to gather HTTP and RTSP request responding speed, page data and present time delay that integrity degree, multicast add/withdraw from etc.
2, stream media quality: the performance index that mainly refer to the Streaming Media transport layer, to adopt MPEG2 TS protocol transmission IPTV program is example, DVB system testing standard TR 101-290 according to each parameter to quality effect difference, 3 ranks have been defined, each rank is corresponding one group of mass parameter respectively, these parameters equally can be for adopting MPEG2 TS protocol of I PTV system reference, for example need to gather the timing error field (sync loss) in first rank, (PID missing) lost in bag identification, data transmission fault in the second level (transport error), the wrong parameters such as (PCR, jitter error) of Program Clock Reference shake.If adopt the stream protocol of RTSP, then will gather the RTSP signaling parameter as the VOD program.
3, transport network layer quality: mainly refer to the performance index of transport network layer related protocol, comprise the number of retransmissions of TCP/UDP, under the situation that has adopted RTP, need monitoring RTP packet loss, RTP shake etc.
4, network layer quality: mainly refer to the performance index of traditional IP layer, Y.1540 advise, be mainly IP packet loss, IP packet delay, IP packet jitter and relevant parameter thereof according to ITU-T.
5, link layer quality:, need to gather different performance index according to different link layer types.Owing to the quality assurance of this level is to be not only the IPTV business towards full-service, and the system of existing special quality-monitoring carries out the quality monitoring of link layer in existing network.
Subjective QoE mainly is meant MOS (mean opinion score, Mean Opinion Score) among the present invention.MOS is a kind of method of measures of quantization of the voice quality that is provided at line terminal (particularly being the speech communication of representative with the Internet).This kind mechanism employing arithmetic average is handled the subjective testing (suggestion mark) with the quantizating index that obtains system operation situation.The present invention expands MOS, is applied in the quantification test of video quality as shown in Figure 3, with the quantizating index as QoE, comes the performance index of the coding parameter that has influence on video quality, resolution parameter, Streaming Media transport layer etc. are carried out overall merit.
IPTV QoS guarantee system of the present invention adopts embedded pattern (Embedded Mode), at inner monitoring module (the STB embedded monitor agent that embeds of set-top box, STB-MA), the operating QoS parameter of set-top box is write down and uploads to IPTV quality of service acquisition platform (IPTV-QCS).Adopt this pattern to need not in the IPTV system, to add new monitoring equipment, the set-top box state of all monitorings and the professional operating position of IPTV can be gathered by IPTV-QCS simultaneously and gather to IPTV-QMS toatal quality control(TQC) platform, can comprehensively reflect user's behaviour in service in real time, when unusual, carry out the accident analysis location, and the tabulate statistics user behavior analysis.
Simultaneously, based on the video analysis probe device, the IPTV QoS guarantee system is realized the network equipment monitoring to carrying IPTV business, video quality situation during the analysis stream medium process network equipment, gather by IPTV-QCS and to gather platform, carry out the fault location of the Macro or mass analysis and the network equipment to IPTV-QMS.
And the IPTV quality of service comprehensive management platform (IPTV-QMS) in the IPTV QoS guarantee system from IPTV-QCS to the professional various aspects of IPTV (as EPG, video source, program channel etc.) parameter is carried out Macro or mass analysis, and demonstrates each the regional IPTV QoS in the current administration in real time.The overall situation shows IPTV service operation situation and the service quality in the compass of competency.
Adopt the C/S framework between the set-top box control module of IPTV QoS guarantee system of the present invention and management server, its external interface manages control by the AS module of management server (QMS) to version on the set-top box as shown in Figure 8.Edition upgrading by set-top box, the services quality monitoring module is deployed on each set-top box in this IPTV system, simultaneously gather by central server and gather the information that all set-top box report, realize the centralized monitor of districts and cities' set-top box in local networking Surveillance center.
IPTV QoS guarantee system graphic user interface (GUI) adopts the B/S framework, need only on the client browser (Browser) is installed, as IE, Firefox etc., browser carries out data interaction by Web Server with database, and user interface realizes by the WWW browser fully.The B/S biggest advantage is exactly can operate anywhere and any special software need not be installed.As long as there is the computer that can surf the Net just can use, the client zero dimension is protected.The expansion of system is very easy to, as long as can surf the Net, distributes a username and password by the system manager again, just can use.
By to relating to the monitoring that each equipment carries out Qos and QoE in the IPTV business, IPTV QoS guarantee system of the present invention has been realized in the IPTV business quality-monitoring end to end, for IPTV operator provides reliable monitoring means.Utilize system provided by the present invention to can be the function that the IPTV business is brought following active O﹠M:
1, quality-monitoring end to end
Standard based on identical Qos and QoE, relate to each link in the IPTV business and carry out quality-monitoring, and carry out Macro or mass analysis, with realization the quality of current set-top box displaying video is monitored, when video quality is lower than alarm threshold value, initiatively initiate alarm, and set-top box is carried out the periodic sampling mode obtain video quality information.
2, network monitor and fault location
Summary machine top box report and alarm information is accurate to every grade of equipment (BAS, DSLAM etc.), and locatees fast by core algorithm, and promptly and accurately analysis of failure effectively improves troubleshooting efficient.Mainly realize by the following method the location fast:
The a.STB monitoring modular detects quality when being lower than default threshold value, and STB will send warning to acquisition server, and reports the programm name of watching this moment, video quality, network quality, systematic function etc.
B. acquisition server carries out diagnosing packet drop on the residing network path of this set-top box based on ping and traceroute testing to the set-top box that frequently breaks down.
C. in network topology, find the serious DSLAM of packet loss to analyze.
D. the programm name video quality on the surrounding time section and the alarm record when reporting to the police that use the BRAS analyzer that the network performance data analysis of the pairing BRAS node of this DSLAM is gathered to report to the police to the acquisition server information inspection video analyzer.
E. management server will gather the analytical information that each sensing point beams back and generate whole locating information shared tree, thereby orient the fault origination point by traveling through this tree, and at the interface highlighted demonstration positioning result.
3, program source monitoring
Program source is monitored, when video is unusual, carry out alarm notification.
4, all kinds of statistics mainly comprise:
A. the network performance to equipment at different levels gathers, and helps grid is optimized.
B. the quality to program source gathers rank, helps media server is optimized.
C. viewership is added up, help market analysis.
5, expert intelligence analytical system
Analyze user's impression of video flowing fault and experience, thereby gather to come all kinds of parameters of video to carry out the phenomenon of intellectual analysis when drawing the video fault and taking place (such as mosaic, card, Hua Ping etc.) according to system.(comprise platform side at the IPTV operation system, network side, end side) service quality is set up intelligent evaluation model, analyze the influence of reason to user experience, the cluster analysis by fault parameters at different levels obtains the different parameters combination influences type to what the terminal use caused, wherein, the cluster analysis model that is adopted as shown in Figure 9, based on the association between fault performance and the fault generation source, the row's of providing barrier suggestion is so that embody IPTV operation system overall operation service quality intuitively.
Utilize IPTV QoS guarantee method of the present invention can reach following effect:
1, effectively reduce O﹠M cost, reduction equipment drops into.
2, by SNMP core layer, access layer equipment are monitored and carry out automatically accurately fault location, before the customer responsiveness fault, finish accident analysis, reduce customer complaint so that in time solve fault.
3, to the monitoring of media player end video source, when breaking down, can in time find, reduce customer complaint.
4, pay close attention to user's Quality of experience, effectively improve user satisfaction.
5, understand user watched custom by the Information Statistics analysis, cooperate promoting service.
Adopted the IPTV QoS guarantee system of this invention, the subjective quality assessment device that it comprises the management server that is arranged at the IPTV system headend and is arranged at each IPTV terminal, described management server connects described each subjective quality assessment device by the IPTV grid, and this subjective quality assessment device is one to be integrated in the service quality control module in the IPTV terminal set top box.Thereby can utilize the service quality control module of this system that the in progress video of IPTV terminal set top box is carried out service quality observing and controlling, obtain the subjective quality score, subjective quality score and the preset threshold value that is obtained compared, if be lower than threshold value, then the service quality control module sends alarm again.Thereby realize subjective quality assessment, improve IPTV quality of service detection mode of the prior art for the IPTV system client.IPTV QoS guarantee system of the present invention is simple in structure, and this method for guaranteeing quality operating cost is cheap, and application mode is easy.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications 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.
Claims (14)
1. IPTV QoS guarantee system, it is characterized in that, described system comprises the management server that is arranged at the IPTV system headend and is arranged at the subjective quality assessment device of each IPTV terminal that described management server connects described each subjective quality assessment device by the IPTV grid.
2. IPTV QoS guarantee system according to claim 1 is characterized in that, described subjective quality assessment device is a service quality control module, and described service quality control module is integrated in the IPTV terminal set top box.
3. IPTV QoS guarantee system according to claim 2, it is characterized in that, described service quality control module comprises code detection unit, resolution detecting unit, picture distortion detection unit, flow media transmission performance detecting unit and statistic unit, described code detection unit, resolution detecting unit, picture distortion detection unit all are connected described statistic unit with the flow media transmission performance detecting unit, and described statistic unit is by IPTV grid connection management server.
4. according to each described IPTV QoS guarantee system in the claim 1 to 3, it is characterized in that, described system also comprises an objective quality assessment device, and described objective quality assessment device is connected between described management server and the described subjective quality assessment device.
5. IPTV QoS guarantee system according to claim 4, it is characterized in that, described objective quality assessment device is a video analysis equipment, described video analysis equipment is arranged on the node of IPTV system headend and terminal room, and the analysis result output of this video analysis equipment is connected in the management server of IPTV system headend.
6. IPTV QoS guarantee system according to claim 5, it is characterized in that, described video analysis equipment comprises: content and quality of service control detecting unit, stream media quality detecting unit, transmission quality detecting unit, network quality detecting unit and link-quality detecting unit, described content all is connected described management server with the testing result output of quality of service control detecting unit, stream media quality detecting unit, transmission quality detecting unit, network quality detecting unit and link-quality detecting unit.
7. realize it is characterized in that the method for IPTV service quality guarantee that described subjective quality assessment device is one to be integrated in the service quality control module in the IPTV terminal set top box for one kind based on the described system of claim 1, described method may further comprise the steps:
(1) described service quality control module carries out service quality observing and controlling to the in progress video of IPTV terminal set top box, obtains the subjective quality score;
(2) described service quality control module compares subjective quality score and the preset threshold value that is obtained, if be lower than threshold value, then the service quality control module sends alarm.
8. the method for IPTV service quality guarantee according to claim 7, it is characterized in that, described service quality control module comprises code detection unit, resolution detecting unit, picture distortion detection unit, flow media transmission performance detecting unit and statistic unit, described code detection unit, resolution detecting unit, picture distortion detection unit all are connected described statistic unit with the flow media transmission performance detecting unit, and described step (1) specifically may further comprise the steps:
(11) code detection unit, resolution detecting unit, picture distortion detection unit and flow media transmission performance detecting unit detect in progress video, and each testing result is sent to described statistic unit;
(12) described statistic unit averages described each testing result, obtains the subjective quality score.
9. the method for IPTV service quality guarantee according to claim 7, it is characterized in that, described system comprises that also one is connected in the objective quality assessment device between described management server and the described subjective quality assessment device, described objective quality assessment device is one to be arranged at the video analysis equipment on the node of IPTV system headend and terminal room, and described method is further comprising the steps of afterwards in step (2):
(3) the described service quality control module video information that will be lower than threshold value is sent to described video analysis equipment;
(4) network state in this path, service quality control module place of described video analysis Equipment Inspection.
(5) network performance of described video analysis Equipment Inspection place node;
(6) described video analysis equipment is sent to management server with described meshed network performance, path network state and the video information received;
(7) after described management server gathers the information that each video analysis equipment returns, show the abort situation in the entire I PTV grid.
10. the method for IPTV service quality guarantee according to claim 9 is characterized in that, described video information video name, video quality information and network quality information.
11. the method for IPTV service quality guarantee according to claim 9 is characterized in that, described step (4) specifically is meant:
The data packet drop in this path, service quality control module place of described video analysis Equipment Inspection.
12. the method according to each described IPTV service quality guarantee in the claim 9 to 11 is characterized in that, described method is further comprising the steps of in step (7) back:
(8) described management server is determined end-user experience information according to the meshed network performance, path network state and the terminal video information that obtain;
(9) reason of described management server analysis of failure generation;
(10) described management server produces reason based on described fault and proposes the fault exclusion program.
13. the method for IPTV service quality guarantee according to claim 12 is characterized in that, described end-user experience information comprises mosaic degree, blank screen and a card degree.
14. the method for IPTV service quality guarantee according to claim 12 is characterized in that, described step (9) specifically is meant:
Described management server analysis of failure produces the relation between source and the described end-user experience information.
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| CN201110102698.4A CN102143389B (en) | 2011-04-22 | 2011-04-22 | Quality assurance (QA) system and method of internet protocol television (IPTV) services |
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