CN101170703B - A method and system for monitoring network TV video quality - Google Patents
A method and system for monitoring network TV video quality Download PDFInfo
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- CN101170703B CN101170703B CN2007101780354A CN200710178035A CN101170703B CN 101170703 B CN101170703 B CN 101170703B CN 2007101780354 A CN2007101780354 A CN 2007101780354A CN 200710178035 A CN200710178035 A CN 200710178035A CN 101170703 B CN101170703 B CN 101170703B
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Abstract
The invention discloses a method for monitoring the video quality of an internet protocol (IP) television, which comprises: step 1, a multicast source server establishes a multicast test channel and sends an IP multicast test stream, wherein the IP multicast test stream has an IP multicast test pack containing sequence number, the sequence numbers of the adjacent test packs being increased progressively; step 2, a digital subscriber line access multiplexer is added into the multicast test channel to receive the IP multicast test stream, and inspects the video quality of IP television according to the continuity of sequence number of the IP multicast test pack, and sends the test result to a service management system; step 3, the service management system receipts and then processes the test result and displays the video quality of IP television. Therefore, the video quality of IP television can be monitored regardless of user data stream.
Description
Technical field
The present invention relates to the network TV IPTV field, relate in particular to a kind of method and system of monitoring network TV video quality.
Background technology
Along with global operator to the IPTV growing interest, global ip TV market presents the impetus of accelerated growth.Because IPTV is that collection data, voice and video are the treble play of one, and service quality has been proposed unprecedented requirement.Except require DSLAM (Digital Subscriber Line Access Multiplexer) to support multicast, bandwidth, service quality QoS and the Multiservice capability at broadband access network, also require DSLAM to possess effective I PTV quality supervision system and fault location means, with faults such as potential congested, blocking-up, conflict in the timely discovery IP network, realize real-time monitoring and initiatively operation maintenance to business.
In the prior art, finally to pass through the purpose frame losing of a certain program time of user's program request, could find that this moment, network TV video quality descended to some extent.This kind settling mode relates to customer traffic, influences user's video-see effect.Such as: RFC4445 MDI (Media Delivery Index) media transmission quality index.It is by Cisco System Co. and IneoQuest common propose be widely used in IPTV and network quality evaluation of IP Cable Network and monitoring.2 parameter Delay Factor (delay factor) that MDI comprises and Media Loss Rate (medium packet loss speed) are to obtain by software analysis protocol bag at user side.Such method needs terminal that the software of realizing computing relay factor and medium packet loss speed is housed, and tests the result who obtains and can not in time return local side, makes office make response to the packet loss in the network.
Summary of the invention
For addressing the above problem, the invention provides monitor video method for quality and system in a kind of network television system, its purpose is each the DSLAM monitoring nodes video flow in the IPTV system.
The invention discloses a kind of method of monitoring network TV video quality, comprising:
Step 1, the multicast source server is set up the multicast test channel, sends IP multicast test stream, and the IP multicast test bag in the described IP multicast test stream comprises sequence number, and the sequence number of adjacent two bags increases progressively;
Step 2, Digital Subscriber Line Access Multiplexer add described multicast test channel, receive described IP multicast test stream, according to the continuity test network TV video quality of described IP multicast test packet number, and this test result are sent to business management system;
Step 3, described business management system receives described test result, it handled, and display network television video quality.
Further comprise in the described step 2, parse the sequence number of described IP multicast test bag, judge whether described sequence number is continuous, if it is discontinuous, then the time interval of serial number by the bag lost and packet loss calculates the packet loss of this IP multicast test stream, calculates the packet loss of multicast packets in the whole network according to this.Hence one can see that, and this packet loss is identical with the medium packet loss speed described in the RFC4445.
Described IP multicast test bag sends with the specific multicast Media Access Control address, and form is fixed.
Further comprise in the described step 2, from the flow that receives, extract described IP multicast test bag according to described specific multicast Media Access Control address.
Described step 2 also comprises, behind the packet loss of described Digital Subscriber Line Access Multiplexer multicast packets in calculating described whole network, described IP multicast test bag is abandoned.
Described IP multicast test stream sends by backbone network.
Implementation in the described step 2 is finished by the hardware of described Digital Subscriber Line Access Multiplexer.
The invention also discloses a kind of system of monitoring network TV video quality, comprise multicast source server, Digital Subscriber Line Access Multiplexer and business management system,
Described multicast source server is used to set up the multicast test channel, and sends IP multicast test stream, and the IP multicast test bag in the described IP multicast test stream comprises sequence number, and the sequence number of adjacent two bags increases progressively;
Described Digital Subscriber Line Access Multiplexer is used to add described multicast test channel, receives described IP multicast test stream, according to the continuity test network TV video quality of described IP multicast test packet number, and sends this test result;
Described business management system is used to receive described test result, it handled, and display network television video quality.
Described Digital Subscriber Line Access Multiplexer is further used for parsing the sequence number of described IP multicast test bag, judge whether described sequence number is continuous, if it is discontinuous, then the time interval of serial number by the bag lost and packet loss calculates the packet loss of this IP multicast test stream, calculates the packet loss of multicast packets in the whole network according to this.
Described Digital Subscriber Line Access Multiplexer also is used for behind the packet loss that calculates described whole network multicast packets, and described IP multicast test bag is abandoned.
Beneficial effect of the present invention is that method and system of the present invention does not need to relate to customer traffic just can the monitor video quality; DSLAM hardware is finished network communication quality and is calculated, and saves its cpu resource; Multicast test stream is sent by backbone network, and its flow is little, does not take the network bandwidth substantially; DSLAM to user user's forwarding group test stream, does not save user bandwidth; Can accurately calculate the boundary of packet loss, send and alarm business management system SMS.
Description of drawings
Fig. 1 is the system construction drawing of monitoring network TV video quality of the present invention;
Fig. 2 is the flow chart of the embodiment of monitoring network TV video quality method of the present invention.
Embodiment
The method of IPTV system monitoring video quality may further comprise the steps:
Step 1, the multicast source server is created the channel of a test I PTV, and with the fixing IP multicast test bag of specific multicast MAC Address transmission form, wherein each IP multicast test bag all comprises a sequence number, the sequence number of two adjacent bags is to increase progressively, and the size of IP multicast test stream and speed are by configuration multicast source server controls;
Step 2, DSLAM adds this testing channel by sending multicast join message JOIN, and no longer send leave group message LEAVE, promptly keep adding this testing channel, after adding the IPTV testing channel, DLSAM hardware can extract described IP multicast test bag according to the specific multicast MAC Address of IP multicast test stream from the flow that receives, and parse the sequence number of bag, judge whether the IP multicast test packet number that receives is continuous, if the sequence number of bag is discontinuous, calculate the packet loss of multicast data flow (time interval of medium package drop-out count/packet loss in packet loss=network) up till now by the serial number of the bag lost and the time interval of packet loss, packet loss in the network is sent this packet loss to SMS by snmp message, and abandon this IP multicast test bag;
Step 3, SMS just comes out data parsing wherein, with the situation of video flow in the mode display network of figure behind the snmp message that receives the DSLAM transmission.
Said method also can have following feature:
In the step 1, the IP multicast test stream that the multicast source server sends transmits by backbone network;
In the step 2, DSLAM calculates the process of real-time whole network packet loss and finishes by hardware, does not need CPU to participate in handling.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme:
Fig. 1 is the system construction drawing of monitoring network TV video quality, comprises multicast source server, SMS and DSLAM in the described system.
The multicast source server, provide and managing I PTV system in the server of program source, be used to set up the multicast test channel, send IP multicast test stream;
DSLAM, insert the Modem combination at multiplexed system center, connect from a plurality of DSL and to collect mail number, it is transformed on the high-speed line, and be used to add described multicast test channel, receive described IP multicast test stream, calculate network TV video quality according to this test flowmeter, and send this result of calculation;
SMS is formed by OSS OSS and Content Management System CMS fusion, mainly is in charge of system, service application, user and streaming medium content, and receives described result of calculation, it is handled, and display network television video current mass.
Fig. 2 is the detail flowchart of an embodiment of the inventive method, may further comprise the steps:
S201 sets up the multicast test channel on the multicast source server, and sends multicast test stream with the speed of specific multicast MAC Address and setting;
S202, DSLAM sends multicast join message, requires to add the multicast test channel;
S203, the multicast source server adds the multicast test channel with DSLAM;
S204, the multicast source server is to the multicast test stream that sends the specific multicast MAC Address;
S205, DSLAM receives IP multicast test bag by described specific multicast MAC Address, judges whether the sequence number of this multicast test bag is continuous, if the discontinuous packet loss that calculates multicast packets in the whole network according to the time interval between sequence number and the discontinuous sequence number;
S206, DSLAM sends to result of calculation on the SMS by snmp message;
S207, DSLAM just abandon the multicast test bag after calculating packet loss, so that the multicast test bag no longer sends toward follow-up network element;
S208, SMS receive described result of calculation, with patterned mode display network video flow quality.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a monitoring network TV video quality is characterized in that, comprising:
Step 1, the multicast source server is set up the multicast test channel, sends IP multicast test stream, and the IP multicast test bag in the described IP multicast test stream comprises sequence number, and the sequence number of adjacent two bags increases progressively;
Step 2, Digital Subscriber Line Access Multiplexer add described multicast test channel, receive described IP multicast test stream, according to the continuity test network TV video quality of described IP multicast test packet number, and test result are sent to business management system;
Step 3, described business management system receives described test result, it handled, and display network television video quality.
2. the method for monitoring network TV video quality as claimed in claim 1, it is characterized in that, further comprise in the described step 2, parse the sequence number of described IP multicast test bag, judge whether described sequence number is continuous, if discontinuous, then the time interval of serial number by the bag lost and packet loss calculates the packet loss of this IP multicast test stream, calculates the packet loss of multicast packets in the whole network according to this.
3. the method for monitoring network TV video quality as claimed in claim 1 is characterized in that, described IP multicast test bag sends with the specific multicast Media Access Control address, and form is fixed.
4. the method for monitoring network TV video quality as claimed in claim 3, it is characterized in that, comprise further in the described step 2 that described Digital Subscriber Line Access Multiplexer extracts described IP multicast test bag according to described specific multicast Media Access Control address from the flow that receives.
5. the method for monitoring network TV video quality as claimed in claim 2 is characterized in that, described step 2 also comprises, behind the packet loss of described Digital Subscriber Line Access Multiplexer multicast packets in calculating described whole network, described IP multicast test bag is abandoned.
6. the method for monitoring network TV video quality as claimed in claim 2 is characterized in that, described IP multicast test stream sends by backbone network.
7. the method for monitoring network TV video quality as claimed in claim 2 is characterized in that, the implementation in the described step 2 is finished by the hardware of described Digital Subscriber Line Access Multiplexer.
8. the system of a monitoring network TV video quality comprises multicast source server, Digital Subscriber Line Access Multiplexer and business management system, it is characterized in that,
Described multicast source server is used to set up the multicast test channel, and sends IP multicast test stream, and the IP multicast test bag in the described IP multicast test stream comprises sequence number, and the sequence number of adjacent two bags increases progressively;
Described Digital Subscriber Line Access Multiplexer is used to add described multicast test channel, receives described IP multicast test stream, according to the continuity test network TV video quality of described IP multicast test packet number, and sends test result;
Described business management system is used to receive described test result, it handled, and display network television video quality.
9. the system of monitoring network TV video quality as claimed in claim 8, it is characterized in that, described Digital Subscriber Line Access Multiplexer is further used for parsing the sequence number of described IP multicast test bag, judge whether described sequence number is continuous, if it is discontinuous, then the time interval of serial number by the bag lost and packet loss calculates the packet loss of this IP multicast test stream, calculates the packet loss of multicast packets in the whole network according to this.
10. the system of monitoring network TV video quality as claimed in claim 9 is characterized in that, described Digital Subscriber Line Access Multiplexer also is used for behind the packet loss that calculates described whole network multicast packets, and described IP multicast test bag is abandoned.
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| CN2007101780354A CN101170703B (en) | 2007-11-23 | 2007-11-23 | A method and system for monitoring network TV video quality |
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| CN2007101780354A CN101170703B (en) | 2007-11-23 | 2007-11-23 | A method and system for monitoring network TV video quality |
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| CN101170703B true CN101170703B (en) | 2010-08-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101594260B (en) * | 2008-05-27 | 2011-10-05 | 上海阿尔卡特网络支援系统有限公司 | Iptv video quality monitoring system |
| CN104219504B (en) * | 2014-09-28 | 2017-09-15 | 上海长合信息技术股份有限公司 | The fault detection method of subway video monitoring system |
| CN112040328B (en) * | 2020-08-04 | 2023-03-10 | 北京字节跳动网络技术有限公司 | Data interaction method and device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6498783B1 (en) * | 1999-06-22 | 2002-12-24 | Lucent Technologies Inc. | Traffic monitoring system and service differentiation in a dynamic channel assignment system for TCP/IP data transmitted via cable television channels |
| CN1972223A (en) * | 2006-12-13 | 2007-05-30 | 中兴通讯股份有限公司 | A method and apparatus for monitoring multicast data flow |
| CN101035136A (en) * | 2007-04-06 | 2007-09-12 | 中兴通讯股份有限公司 | Multicast testing device running in the multi-network card computer and its using method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6498783B1 (en) * | 1999-06-22 | 2002-12-24 | Lucent Technologies Inc. | Traffic monitoring system and service differentiation in a dynamic channel assignment system for TCP/IP data transmitted via cable television channels |
| CN1972223A (en) * | 2006-12-13 | 2007-05-30 | 中兴通讯股份有限公司 | A method and apparatus for monitoring multicast data flow |
| CN101035136A (en) * | 2007-04-06 | 2007-09-12 | 中兴通讯股份有限公司 | Multicast testing device running in the multi-network card computer and its using method |
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