CN101110754A - Fast response method for implementing switching multicast channels by user - Google Patents
Fast response method for implementing switching multicast channels by user Download PDFInfo
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- CN101110754A CN101110754A CNA2006100988717A CN200610098871A CN101110754A CN 101110754 A CN101110754 A CN 101110754A CN A2006100988717 A CNA2006100988717 A CN A2006100988717A CN 200610098871 A CN200610098871 A CN 200610098871A CN 101110754 A CN101110754 A CN 101110754A
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Abstract
The present invention discloses a rapid response method for realizing the multicast channel switching by the user. The method comprises the following steps: (1) the multicast data flow of an IPTV service is sent to a DSLAM equipment interface, and the DSLAM equipment obtains the multicast channel access control list of the relevant user; (2) a function being capable of making the DSLAM equipment leave rapidly; (3) when the multicast channel is switched by the user, the set-top box of the user generates protocol message which is sent to the DSLAM equipment; (4) when the DSLAM equipment receives the leaving request message of the IGMP, the rapid leaving function is used, to immediately stop replication of the multicast data flow requested to leave by the user; (5) the DSLAM equipment continues processing the protocol message according to the normal procedure, and sends new channel multicast data flow. When carrying out the IPTV service, the response speed of the DSLAM equipment to the multicast channel switching by the user is improved.
Description
Technical field
The present invention relates to the IPTV business, specifically, relate to a kind of fast response method of realizing switching multicast channels by user.
Background technology
Country is formulating the relevant criterion of IPTV at present, in 6 standards having formulated, " IPTV is to the specification requirement of DSLAM equipment " standard and DSLAM (Digital Subsriber LineAccess Multiplexer, digital subscriber line access multiplex) equipment is closely related, and as long as the current DSLAM equipment of supporting the IPTV business to carry out need be supported the quick response function of the switching multicast channels by user stipulated in this standard certainly.Related request and the function stipulated in our the DSLAM equipment realization standard.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of fast response method of realizing switching multicast channels by user, solved and carried out the IPTV business, adopt multicasting technology operation live telecast video traffic, carry out the control of multicast and when duplicating with DSLAM equipment, by existing multicast protocol, quick response in the time of can't realizing switching multicast channels by user is difficult to ensure the good problem of experiencing of user.
In order to address the above problem, the invention provides a kind of fast response method of realizing switching multicast channels by user, be applied in the DSLAM equipment under the IPTV business, it comprises the steps:
(1) multicast traffic stream of IPTV business is sent to DSLAM device network interface, and DSLAM equipment obtains associated user's multicast channel control of authority table;
What (2) enable DSLAM equipment leaves function fast;
(3) user is switched multicast channel, and user's STB (set-top box) set-top box produces protocol massages, sends to DSLAM equipment;
(4) when DSLAM equipment receives IGMP (Internet Group Message Protocol, the Internet group message protocol) leave (leaving request) message, utilize and leave function fast, the multicast traffic stream that customer requirements is left stops to duplicate at once.
Method of the present invention wherein, further comprises:
(5) DSLAM equipment continues the processing protocol message by normal flow, sends the new channel multicast traffic stream to the user.
Method of the present invention, wherein, step further comprises in (5):
DSLAM equipment receives IGMP join (joining request) message, has judged whether authority according to user's multicast channel control of authority table, if lawful authority then duplicates the new multicast traffic stream of user's request to the user at once.
Further, method of the present invention, wherein, the multicast traffic stream of described IPTV business is sent to the mode of described DSLAM device network interface, is the mode of multicast traffic stream propelling movement.
Further, method of the present invention, wherein, the multicast traffic stream of described IPTV business is sent to the mode of described DSLAM device network interface, is the mode of the pre-request function of DSLAM equipment utilization IGMP.
Further, method of the present invention, wherein, the mode that described multicast data flow pushes, for multicast traffic stream is pressed the static multicast ways of distribution by the multicast router on upper strata, no matter whether need or need which kind of multicast traffic stream on the DSLAM equipment, all multicast traffic streams all are pushed to DSLAM device network interface.
Further, method of the present invention, wherein, the mode of the pre-request function of described DSLAM equipment utilization IGMP, for DSLAM equipment with the user paid close attention on this equipment multicast traffic stream by pre-request mode, from the multicast router on upper strata, multicast traffic stream is distributed to the network interface of this equipment.
Further, method of the present invention, wherein, described multicast channel control of authority table communicates acquisition by DSLAM equipment and business management system.
The technical solution of the present invention, after implementing, DSLAM equipment can reach the response speed of switching multicast channels by user:
(1) sent under the situation of DSLAM device network interface at multicast traffic stream, the user sends IGMP report (report request) message and arrives the adding time-delay of user side equipment to multicast traffic stream, for less than 100ms;
(2) sent under the situation of DSLAM device network interface at multicast traffic stream, the user sends IGMP leave (leaving request) message to the cut quick leave latency time of multicast traffic stream, for less than 100ms;
(3) sent under the situation of DSLAM device network interface at multicast traffic stream, the user escape to the switching time that switches to another multicast group from a multicast group, for less than 200ms.
Description of drawings
Fig. 1 is the basic flow sheet of method described in the embodiment of the invention.
Embodiment
As shown in Figure 1, the implementation step that the method described in the embodiment of the invention is concrete is as follows:
Step 101: the multicast traffic stream of carrying out the IPTV business is sent to DSLAM device network interface, and DSLAM equipment obtains associated user's multicast channel control of authority table;
Step 102:DSLAM equipment is realized leaving function fast, can be provided with and leave enabling or forbidding of function fast.What enable DSLAM equipment leaves function fast;
Step 103: validated user is watched in the multicast data flow in request, carries out multicast channel and switches, and user's STB set-top box successively produces an IGMP leave (leaving request) message and an IGMPjoin (joining request) message, sends to DSLAM equipment;
Step 104:DSLAM equipment at first receives IGMP leave (leaving request) message, utilizes and leaves function fast, and the multicast traffic stream that customer requirements is left stops to duplicate at once;
Step 105:DSLAM equipment continues to handle IGMP leave (leaving request) message by the normal process flow process;
Step 106:DSLAM equipment receives IGMP join (joining request) message subsequently, has judged whether authority according to user multicast channel control of authority table, if legal, then the new multicast traffic stream of at once user being asked duplicates to the user;
Step 107: the user watches new multicast channel program in a short period of time.
In the described method of the embodiment of the invention, the multicast traffic stream of IPTV business is sent to DSLAM device network interface, can adopt dual mode: a kind of is the mode that multicast data flow pushes, be that multicast data flow is passed through the multicast router on upper strata by the static multicast ways of distribution, no matter whether need or need which kind of multicast data flow on the DSLAM equipment, all multicast data flows all are pushed to DSLAM device network interface; Another kind of mode is the pre-request function of DSLAM equipment utilization IGMP, and promptly DSLAM equipment by pre-request mode, is distributed to multicast traffic stream this device network interface with the user paid close attention on this equipment multicast traffic stream from the multicast router on upper strata.
In the described method of the embodiment of the invention, the multicast channel access control right table that DSLAM equipment obtains this equipment user is to communicate acquisition by DSLAM equipment and business management system SMS (ServiceManagement System), communicates acquisition and the information among the SMS is the OSS system of SMS system and IPTV.
In the described method of the embodiment of the invention, DSLAM equipment leave fast function for based on user port at user IGMP leave (leaving request) message stop the function that duplicated multicast flows fast, be an attribute of user port.When DSLAM equipment realize certain user port leave function fast the time, essence is for increasing a judgement in the processing that receives user IGMP leave (leaving request) message at DSLAM equipment, judge promptly whether this user needs to leave fast, if need, then before the processing protocol state, the multicast traffic stream that at first will copy to this user stops, and then handles normal flow process, confirms query message, change User Status sign etc. as sending.
Above-mentioned embodiment describes the present invention with preferred embodiment, should not be regarded as limitation of the scope of the invention.Equally, according to the description of technical scheme of the present invention and preferred embodiment thereof, can make various possible being equal to and change or replacement, and all these changes or replacement all should belong to the protection range of claim of the present invention.
Claims (8)
1. a fast response method of realizing switching multicast channels by user is applied to it is characterized in that in the digital subscriber line access multiplex under the IPTV business, comprises the steps:
(1) multicast traffic stream of IPTV business is sent to the digital subscriber line access multiplex network interface, and digital subscriber line access multiplex obtains associated user's multicast channel control of authority table;
What (2) enable digital subscriber line access multiplex leaves function fast;
(3) user is switched multicast channel, and user's set-top box produces protocol massages, sends to digital subscriber line access multiplex;
(4) when digital subscriber line access multiplex receive the Internet group message protocol leave request message the time, utilize and to leave function fast, the multicast traffic stream that customer requirements is left stops to duplicate at once.
2. the method for claim 1 is characterized in that, further comprises:
(5) digital subscriber line access multiplex continues the processing protocol message by normal flow, sends the new channel multicast traffic stream to the user.
3. method as claimed in claim 2 is characterized in that, step further comprises in (5):
Digital subscriber line access multiplex receives the message that joins request of the Internet group message protocol, has judged whether authority according to user's multicast channel control of authority table, if lawful authority then duplicates the new multicast traffic stream of user's request to the user at once.
4. the method for claim 1 is characterized in that, the multicast traffic stream of described IPTV business is sent to the mode of described digital subscriber line access multiplex network interface, is the mode of multicast traffic stream propelling movement.
5. the method for claim 1, it is characterized in that, the multicast traffic stream of described IPTV business is sent to the mode of described digital subscriber line access multiplex network interface, utilizes the mode of the pre-request function of the Internet group message protocol for digital subscriber line access multiplex.
6. method as claimed in claim 4, it is characterized in that, the mode that described multicast data flow pushes, for multicast traffic stream is pressed the static multicast ways of distribution by the multicast router on upper strata, no matter whether need or need which kind of multicast traffic stream on the digital subscriber line access multiplex, all multicast traffic streams all are pushed to the digital subscriber line access multiplex network interface.
7. method as claimed in claim 5, it is characterized in that, described digital subscriber line access multiplex utilizes the mode of the pre-request function of the Internet group message protocol, for digital subscriber line access multiplex with the user paid close attention on this equipment multicast traffic stream by pre-request mode, from the multicast router on upper strata, multicast traffic stream is distributed to the network interface of this equipment.
8. the method for claim 1 is characterized in that, described multicast channel control of authority table communicates acquisition by digital subscriber line access multiplex and business management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100988717A CN101110754A (en) | 2006-07-17 | 2006-07-17 | Fast response method for implementing switching multicast channels by user |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100988717A CN101110754A (en) | 2006-07-17 | 2006-07-17 | Fast response method for implementing switching multicast channels by user |
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| CN101110754A true CN101110754A (en) | 2008-01-23 |
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| CNA2006100988717A Pending CN101110754A (en) | 2006-07-17 | 2006-07-17 | Fast response method for implementing switching multicast channels by user |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101494548B (en) * | 2009-03-02 | 2011-07-13 | 中兴通讯股份有限公司 | Method and apparatus for reducing network television multicast cutoff time |
| CN103166769A (en) * | 2011-12-14 | 2013-06-19 | 中兴通讯股份有限公司 | Method and system of multicast service control |
-
2006
- 2006-07-17 CN CNA2006100988717A patent/CN101110754A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101494548B (en) * | 2009-03-02 | 2011-07-13 | 中兴通讯股份有限公司 | Method and apparatus for reducing network television multicast cutoff time |
| CN103166769A (en) * | 2011-12-14 | 2013-06-19 | 中兴通讯股份有限公司 | Method and system of multicast service control |
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