CN1972223A - A method and apparatus for monitoring multicast data flow - Google Patents
A method and apparatus for monitoring multicast data flow Download PDFInfo
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Abstract
This invention discloses one method to monitor set broadcast data flow, which comprises the following steps: a, setting parameter to establish set broadcast background and to set work end and protection end; b, according to set parameters, sending the terminal set broadcast data to several aim terminals through work end or protection end; c, each aim terminal receives set data for checking and sending the check result to feedback message. This invention also provides one device for set broadcast monitor.
Description
Technical field
The present invention relates to the data transmission technology of the communications field, relate in particular to a kind of method and apparatus monitoring multicast data flow.
Background technology
In the communications field, the reliability of data transmission problem is one of people's focus always.By device or transmission line are taked redundancy backup; promptly when active link broke down, data service can automatically switch on the reserve link, thereby can not cause service disconnection; this mode has improved the reliability of communication system, is a kind of application network self-healing protection mode more widely.Communication structure commonly used has clean culture (P2P, point-to-point), multicast (P2M, point-to-multipoint) and broadcasting in the network, and data are with the transmission of the mode of packet usually.In mode of unicast, improve reliability of data transmission and can adopt following approach:
1) forward error correction (FEC, Forward Error Correction), this method increase the redundant correcting sign indicating number in the packet that sends, the recipient carries out error detection occurs according to error correcting code to data; As find mistake, then correct by the recipient.
2) automatic repeat request (ARQ, Automatic Repeat reQuest), this method increase redundant error detection code in the packet that sends, the recipient carries out error detection occurs according to error detection code to data; As find the mistake that the recipient can not correct, then the recipient returns the information of request repeat, and by the transmit leg packet that retransfers.
The multicast mode is meant that a source terminal once sends identical data to a plurality of purpose terminals, and each purpose terminal receives the data transfer mode of processing to these data.In order to realize reliability protection under the multicast mode, also can adopt the guard method of clean culture.But if the multicast mode adopts FEC, for the part or all of mistake of correction of data bag, needing increases more redundant information, will expend a large amount of bandwidth resources and CPU computational resource like this.And if the multicast mode adopts ARQ, the repeating transmission of packet can cause very big problem to source terminal, because each purpose terminal all must be given source terminal by feedback message, if the purpose terminal quantity is very big, then source terminal can be received the feedback message of flood tide; In addition, if certain purpose terminal request is retransmitted certain packet, then source terminal needs to carry out the multicast transmission of a point-to-multipoint again, will have a strong impact on efficiency of transmission like this.
At present; the patent documentation that discloses relevant multicasting technology includes: Chinese patent literature CN1407763 " guard method of group business stream in a kind of BNET ", Chinese patent literature CN1836401 " feedback signaling that is used for muticast data transmission " and american documentation literature US6931005 " IP multicast servicesover an ATM network (IP multicast service on the atm network) ", wherein:
The disclosed technology of Chinese patent literature CN1407763 exists following limitation or deficiency: one, working end and protection end all use permanent virtual link (Permanent VirtualCircuit in the employed guard method; PVC); be that this guard method realizes on the ATM layer; if data service need (as the working end be E1 circuit or SDH circuit by different physical circuits; and the protection end is a V35 circuit etc.), this method is just inapplicable.Two, do not provide the method for under the multicast environment data business being monitored, promptly the purpose terminal does not have feedback-related information to give source terminal, causes source terminal can't know whether data transmission link is normal.
The disclosed technology of Chinese patent literature CN1836401 exists following limitation or deficiency: one, employed data set broadcast mode is not with the protection link, has reduced the reliability of transmission.Two, employed signaling feedback mechanism is mainly used in wireless communication system (as GSM, UMTS etc.), has certain limitation.
The disclosed technology of american documentation literature US6931005 exists following limitation or deficiency: one, employed IP multicast mode is not with the protection link, has reduced the reliability of transmission.Two,, be unsuitable for the multicast of the unidirectional traffic of low delay variation only at the multicast of IP operation.
In summary, existing relevant multicasting technology obviously exists inconvenience and defective on reality is used.Therefore in order to improve the reliability of multicast service transmission, need to adopt other efficient ways.
Summary of the invention
At above-mentioned defective, first purpose of the present invention is to provide a kind of method to monitoring multicast data flow, and this method can be protected the monitoring multicast data flow of link to band, thereby has improved the reliability of multicast service.
Second purpose of the present invention is to provide a kind of device to monitoring multicast data flow, and this device can be protected the monitoring multicast data flow of link to band, thereby improved the reliability of multicast service.
In order to realize above-mentioned first purpose, the invention provides a kind of method to monitoring multicast data flow, comprising:
Steps A, configuration parameter to be setting up multicast environment, and working end and protection end are set;
Step B according to described configuration parameter, sends to some purpose terminals with the multicast packet of source terminal by working end or protection end;
Step C after each purpose terminal receives multicast packet, checks data, sends feedback message according to check result to source terminal.
The method according to this invention, described steps A comprise the data transfer path of the multicast packet of source of configuration terminal to some purpose terminals.
The method according to this invention, described step B further comprises:
Step B1, the multicast packet of described source terminal inserts by the information source plate, and is forwarded to the source relay plate after addressing encapsulation;
Step B2, after described source relay plate is received multicast packet, according to configuration parameter, addressing and operating state with multicast packet from the working end or protection end be forwarded to the purpose relay plate;
Step B3 after described purpose relay plate is received multicast packet, arrives stay of two nights plate and/or other purpose relay plate according to configuration parameter, addressing with transmitting multicast data;
Step B4, described stay of two nights plate addresses encapsulation after receiving multicast packet, is transmitted to the purpose terminal again.
The method according to this invention, described step B1 also comprises, multicast packet is forwarded to the source relay plate of working end and the source relay plate of protection end by permanent virtual link;
Described step B2 also comprises; work at present state according to working end and protection end; source relay plate by the working end is the purpose relay plate of transmitting multicast data to the working end, and perhaps the source relay plate by the protection end is with the purpose relay plate of transmitting multicast data to the protection end.
The method according to this invention, the relay plate of described working end adopts different physical transmission mediums respectively with the relay plate of protection end.
The method according to this invention, described step C further comprises, after each purpose terminal is received multicast packet, sends feedback message by reverse addressing to source terminal.
The method according to this invention further comprises M in steps: after receiving alarm information, and the operating state of switch operating end or protection end.
The method according to this invention, described step M further comprises:
Step M1 when the working end or after protecting end to receive alarm information, judges alarm type earlier;
Step M2 is if chain circuit alarming then finds out link corresponding, if the port alarm then finds out corresponding port, if board alarm then finds out corresponding veneer;
Step M3 is according to alarming or go the alert alarm status that working end or protection end are set;
Step M4 is according to the operating state of described alarm status switch operating end or protection end.
In order to realize above-mentioned second purpose, the invention provides a kind of device to monitoring multicast data flow, comprising:
Parameter configuration module is used for configuration parameter setting up multicast environment, and working end and protection end are set;
Data processing module is used for according to described configuration parameter, the multicast packet of source terminal is held by working end or protection send to some purpose terminals;
The feedback message processing module is used for multicast packet is checked, according to check result the feedback message of each purpose terminal is sent to source terminal.
According to device of the present invention, described data processing module further includes:
The source inlet processing module, the multicast packet that is used for source terminal that the information source plate is received addresses encapsulation, and is forwarded to the source relay plate;
Relaying outlet processing module is used for according to configuration parameter, addressing and operating state, the multicast packet that the source relay plate is received from the working end or the protection end be forwarded to the purpose relay plate;
The relay portal processing module is used for according to configuration parameter and addressing, gives stay of two nights plate and/or other purpose relay plate with the transmitting multicast data that the purpose relay plate is received;
Purpose outlet processing module is used for the data that stay of two nights plate is received are addressed encapsulation, and is transmitted to the purpose terminal.
According to device of the present invention, described source inlet processing module is forwarded to the source relay plate of working end and the source relay plate of protection end with multicast packet by permanent virtual link;
Described relaying outlet processing module is according to the work at present state of working end and protection end; source relay plate by the working end is the purpose relay plate of transmitting multicast data to the working end, and perhaps the source relay plate by the protection end is with the purpose relay plate of transmitting multicast data to the protection end.
According to device of the present invention, also include the alarm handover module, be used for the operating state of after receiving alarm information switch operating end or protection end.
The present invention is applied to the multicast service with the protection link; after each purpose terminal receives the multicast packet of source terminal; source terminal can send feedback message to source terminal; source terminal can know whether multicast packet sends to the destination and whether data transmission link is normal thus; thereby realize monitoring, improved the reliability of multicast service the multicast transmission quality of putting multiple spot.
Description of drawings
Fig. 1 is the method flow diagram of the present invention to monitoring multicast data flow;
Fig. 2 is the alarm handoff procedure schematic diagram of working end of the present invention and protection end;
Fig. 3 is the module diagram of the present invention to the device of monitoring multicast data flow;
Fig. 4 is the forward processing procedure schematic diagram that source terminal of the present invention sends multicast packet;
Fig. 5 is the inverse process schematic diagram that the object of the invention terminal sends feedback message.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Basic thought of the present invention is: in the multicast service of band protection link; after a plurality of purpose terminals receive the multicast packet of source terminal; each purpose terminal sends feedback message to source terminal, thereby realizes the monitoring to multicast service, and then has improved the reliability and maintainability of multicast service.
Fig. 1 is the flow chart of the method for monitoring multicast data flow of the present invention.This method comprises:
Step S101, configuration parameter is to set up the multicast environment of point to multiple spot, and the multicast packet of assigned source terminal arrives the data transfer path of some purpose terminals, and working end and protection end are set.This step is carried out parameter configuration to each network node, comprises basic parameter, source inlet parameter, relaying outlet parameter, relay portal parameter and purpose outlet parameter etc., after each node configuration is finished, has just set up the data multicast environment of putting multiple spot.Multicast environment band protection link of the present invention, purpose is to improve reliability of data transmission.
Step S102 according to described configuration parameter, sends to some purpose terminals with the multicast packet of source terminal by working end or protection end, to realize the forward processing procedure of multicast packet.This step further comprises:
(1) multicast packet of described source terminal inserts by the information source plate, and after the addressing package module encapsulated to data addressing, the information source plate was forwarded to the source relay plate of working end and the source relay plate of protection end with multicast packet by permanent virtual link;
(2) after the relaying of source, described two ends relay plate outlet veneer is received multicast packet; according to relaying outlet parameter, addressing and relaying export state; the source relay plate (relaying outlet veneer) that multicast packet is passed through the working end perhaps arrives transmitting multicast data by the source relay plate (relaying outlet veneer) of protection end the purpose relay plate of protection end with the purpose relay plate of transmitting multicast data to the working end.Different physical transmission mediums can be adopted with the protection end in the working end of source of the present invention relay plate and purpose relay plate; for example the working end is E1 or SDH circuit; and the protection end is a V35 circuit etc.; be applicable to the situation that data service need be transmitted by different physical circuits, thereby enlarged the application of system.
(3) after the relay portal veneer of described purpose relay plate is received multicast packet, transmitting multicast data is arrived the purpose relay plate of stay of two nights plate and/or other frame according to relay portal parameter, addressing;
(4) described stay of two nights plate addresses encapsulation after receiving multicast packet, is transmitted to the purpose terminal again.
Step S103 after each purpose terminal receives multicast packet, checks data, sends feedback message according to check result to source terminal.Mainly comprise data type sign, purpose terminal number and some other customized information in the data format of described feedback message.Each purpose terminal of this step adopts the mode of reverse addressing to send feedback message to source terminal, finishes the inverse process of the multipoint-to-point of feedback message.
Referring to shown in Figure 2, this method also comprises the alarm switch step of working end and protection end, when the working end or after protecting end to receive alarm information, finishes the switching of two ends operating state automatically fast.Described alarm switch step betides after the step S101, specifically comprises:
Step S201, the working end of business board or protection end receive that alarm information, the alarm information here comprise chain circuit alarming message, port alarm information and board alarm message etc.
Step S202 judges alarm type.
Step S203 if chain circuit alarming, then finds out link corresponding according to veneer number, port numbers, permanent virtual link parameter.
Step S204 if port alarm, then finds out corresponding port according to veneer number, port numbers.
Step S205, then number whether consistent as opposite end veneer off-line or reset etc. if board alarm with the opposite end parameter according to checking veneer, find out the veneer of correspondence;
Step S206 is according to alarming or go the alert alarm status that working end or protection end are set;
Step S207 is according to the operating state of described alarm status switch operating end or protection end.
Referring to shown in Figure 3, be the module diagram of the present invention to the device of monitoring multicast data flow, this device comprises:
The source inlet processing module, the multicast packet that is used for source terminal that the information source plate is received addresses encapsulation, and is forwarded to the source relay plate of working end and the source relay plate of protection end by permanent virtual link.
Relaying outlet processing module; be used for according to relaying outlet parameter, addressing and relaying export state; the relaying outlet veneer of the source relay plate by the working end is the purpose relay plate of transmitting multicast data to the working end of other frames, and perhaps the relaying outlet veneer of the source relay plate by the protection end is with the purpose relay plate of transmitting multicast data to the protection end of other frames.
The relay portal processing module is used for according to relay portal parameter and addressing, gives the purpose relay plate of local stay of two nights plate and/or other frame with the transmitting multicast data that the relay portal veneer of purpose relay plate is received;
Purpose outlet processing module is used for the multicast packet that stay of two nights plate is received is addressed encapsulation, and is transmitted to the purpose terminal.
Feedback message processing module 6 is used for according to described configuration parameter and operating state, and the feedback message that exports each purpose terminal by feedback message inlet and feedback message sends to source terminal, finishes the inverse process of feedback message.
Alarm handover module 7, it is used for after receiving alarm information, and the quick switching of the operating state of finish the work automatically end or protection end is to realize the protection to multicast service.
The concrete operations of this device see also above-mentioned description to method, do not repeat them here.Method and apparatus of the present invention is applicable to any communication system, and is not only applicable to the multicast of IP operation, also is applicable to other multicast services such as multicast of the unidirectional traffic of low delay variation, and technology has wide range of applications.
Below in conjunction with specific embodiment the present invention is described further, Fig. 4 is the forward processing procedure schematic diagram that source terminal sends multicast packet in one embodiment of the invention, wherein:
In frame A, after the multicast packet of source terminal 10 entered information source plate 11, at first addressing encapsulation (being addressed to 5 in this example) was forwarded to E1 relay plate 12 and V35 relay plate 13 by permanent virtual link PVC1 and permanent virtual link PVC2 then.After E1 relay plate 12 is received multicast packet, check that its relaying outlet work at present state is the working end, then send the E1 relay plate 22 of multicast packet to frame B from this relaying outlet; After V35 relay plate 13 is received multicast packet, check that its relaying outlet work at present state for the protection end, then abandons data.On the contrary, if the work at present state of the relaying of V35 relay plate 13 outlet is the working end, then send the V35 relay plate 23 of multicast packet to frame B; The work at present state of the relaying of E1 relay plate 12 outlet at this moment then abandons data for the protection end.
In frame B, if the relay portal of E1 relay plate 22 is received multicast packet, be forwarded to stay of two nights plate 21 by permanent virtual link PVC3, in addition, according to configuration parameter and relaying export state, also multicast packet to be forwarded to the E1 relay plate 32 of frame C from the relaying outlet of E1 relay plate 22; At this moment V35 relay plate 23 is not left intact multicast packet because receive.On the contrary, if after the relay portal of V35 relay plate 23 is received multicast packet, be forwarded to stay of two nights plate 21, and can export the V35 relay plate 33 that be forwarded to frame C from relaying by permanent virtual link PVC4; At this moment E1 relay plate 22 is not left intact multicast packet owing to receiving.Receive the multicast packet addressing when stay of two nights plate 21 and go encapsulation, sending to purpose terminal 20.
In frame C, if E1 relay plate 32 is received multicast packet, transmit data to stay of two nights plate 31 by permanent virtual link PVC6, at this moment V35 relay plate 33 is not done any processing; If V35 relay plate 33 is received multicast packet, transmit data to stay of two nights plate 31 by permanent virtual link PVC7, at this moment E1 relay plate 32 is not done any processing.After stay of two nights plate 31 is received multicast packet, address encapsulation, re-send to purpose terminal 30.
The working end of present embodiment source relay plate and purpose relay plate and protection end adopt different physical transmission mediums, i.e. E1 circuit and V35 circuit, situation about need transmit by different physical circuits applicable to data service.In addition, when relay plate (veneer) is received multicast packet by permanent virtual link PVC, need note the addressing information of multicast packet, oppositely transmit feedback message for next step and prepare.
Fig. 5 is the processing procedure schematic diagram that the purpose terminal sends feedback message in the foregoing description, wherein:
In frame B, after stay of two nights plate 21 is received feedback information, address the addressing record that encapsulates and check permanent virtual link, if writing down, existence transmits feedback message to the corresponding relay plate.In the present embodiment, check out that permanent virtual link PVC3 has the record of addressing 5, address 5 the permanent virtual link PVC3 forwarding of multicast packet process as can be known, then transmit feedback message to E1 relay plate 22 from permanent virtual link PVC3, permanent virtual link PVC4 is not because exist the record of addressing 5, so do not transmit feedback message, prevented the pilosity of feedback information like this.After E1 relay plate 22 is received feedback information, check its relay portal allows the addressing record whether to have addressing 5,, illustrate that the data of addressing 5 are transmitted from other frame, then transmit feedback message from this relay portal if exist; Otherwise abandon feedback message.Because it is similar to purpose terminal 20 that purpose terminal 30 sends the processing procedure of feedback message, in this omission.
In frame A, E1 relay plate 12 is received the feedback message packet, whether the permission addressing record of at first checking its relaying outlet exists addressing 5, if exist, further need to check the work at present state of this relaying outlet, if state is the working end, whether the addressing record that reexamines permanent virtual link PVC1 exists addressing 5, transmit feedback message to information source plate 11 if exist then by permanent virtual link PVC1,, then abandon feedback message as long as have one to be false in above-mentioned three conditions.After information source plate 11 is received feedback message, check whether addressing 5 allows to insert, if then addressing is gone to encapsulate the back and sent feedback message to source terminal 10, thereby has finished a transmission course of feedback message.
In sum; the present invention is in having the multicast environment of protecting link; send feedback message to source terminal by the purpose terminal; source terminal can know whether multicast packet sends to the destination and whether data transmission link is normal thus, thereby realizes effective monitoring is carried out in the data service under the multicast environment.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (12)
1, a kind of method to monitoring multicast data flow is characterized in that, comprising:
Steps A, configuration parameter to be setting up multicast environment, and working end and protection end are set;
Step B according to described configuration parameter, sends to some purpose terminals with the multicast packet of source terminal by working end or protection end;
Step C after each purpose terminal receives multicast packet, checks data, sends feedback message according to check result to source terminal.
2, method according to claim 1 is characterized in that, described steps A comprises the data transfer path of the multicast packet of source of configuration terminal to some purpose terminals.
3, method according to claim 1 is characterized in that, described step B further comprises:
Step B1, the multicast packet of described source terminal inserts by the information source plate, and is forwarded to the source relay plate after addressing encapsulation;
Step B2, after described source relay plate is received multicast packet, according to configuration parameter, addressing and operating state with multicast packet from the working end or protection end be forwarded to the purpose relay plate;
Step B3 after described purpose relay plate is received multicast packet, arrives stay of two nights plate and/or other purpose relay plate according to configuration parameter, addressing with transmitting multicast data;
Step B4, described stay of two nights plate addresses encapsulation after receiving multicast packet, is transmitted to the purpose terminal again.
4, method according to claim 3 is characterized in that, described step B1 also comprises, multicast packet is forwarded to the source relay plate of working end and the source relay plate of protection end by permanent virtual link;
Described step B2 also comprises; work at present state according to working end and protection end; source relay plate by the working end is the purpose relay plate of transmitting multicast data to the working end, and perhaps the source relay plate by the protection end is with the purpose relay plate of transmitting multicast data to the protection end.
5, method according to claim 4 is characterized in that, the relay plate of described working end adopts different physical transmission mediums respectively with the relay plate of protection end.
6, method according to claim 1 is characterized in that, described step C further comprises, after each purpose terminal is received multicast packet, sends feedback message by reverse addressing to source terminal.
7, according to each described method of claim 1～6, it is characterized in that, further comprise M in steps: after receiving alarm information, the operating state of switch operating end or protection end.
8, method according to claim 7 is characterized in that, described step M further comprises:
Step M1 when the working end or after protecting end to receive alarm information, judges alarm type earlier;
Step M2 is if chain circuit alarming then finds out link corresponding, if the port alarm then finds out corresponding port, if board alarm then finds out corresponding veneer;
Step M3 is according to alarming or go the alert alarm status that working end or protection end are set;
Step M4 is according to the operating state of described alarm status switch operating end or protection end.
9, a kind of device to monitoring multicast data flow is characterized in that, comprises
Parameter configuration module is used for configuration parameter setting up multicast environment, and working end and protection end are set;
Data processing module is used for according to described configuration parameter, the multicast packet of source terminal is held by working end or protection send to some purpose terminals;
The feedback message processing module is used for multicast packet is checked, according to check result the feedback message of each purpose terminal is sent to source terminal.
10, device according to claim 9 is characterized in that, described data processing module further includes:
The source inlet processing module, the multicast packet that is used for source terminal that the information source plate is received addresses encapsulation, and is forwarded to the source relay plate;
Relaying outlet processing module is used for according to configuration parameter, addressing and operating state, the multicast packet that the source relay plate is received from the working end or the protection end be forwarded to the purpose relay plate;
The relay portal processing module is used for according to configuration parameter and addressing, gives stay of two nights plate and/or other purpose relay plate with the transmitting multicast data that the purpose relay plate is received;
Purpose outlet processing module is used for the data that stay of two nights plate is received are addressed encapsulation, and is transmitted to the purpose terminal.
11, device according to claim 10 is characterized in that, described source inlet processing module is forwarded to the source relay plate of working end and the source relay plate of protection end with multicast packet by permanent virtual link;
Described relaying outlet processing module is according to the work at present state of working end and protection end; source relay plate by the working end is the purpose relay plate of transmitting multicast data to the working end, and perhaps the source relay plate by the protection end is with the purpose relay plate of transmitting multicast data to the protection end.
12, according to each described device of claim 9～11, it is characterized in that, also include the alarm handover module, be used for the operating state of after receiving alarm information switch operating end or protection end.
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| CNB2006101651452A CN100486186C (en) | 2006-12-13 | 2006-12-13 | A method and apparatus for monitoring multicast data flow |
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| CNB2006101651452A CN100486186C (en) | 2006-12-13 | 2006-12-13 | A method and apparatus for monitoring multicast data flow |
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| CN1972223A true CN1972223A (en) | 2007-05-30 |
| CN100486186C CN100486186C (en) | 2009-05-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170703B (en) * | 2007-11-23 | 2010-08-18 | 中兴通讯股份有限公司 | A method and system for monitoring network TV video quality |
| CN102017535A (en) * | 2008-01-14 | 2011-04-13 | 上海贝尔股份有限公司 | Method and system for smart protection of Ethernet virtual private-rooted multipoint service |
| CN101836393B (en) * | 2007-10-23 | 2013-03-13 | 西门子通讯公司 | Method and system for multicast statistic collection |
| CN104135721A (en) * | 2008-06-26 | 2014-11-05 | 汤姆逊许可公司 | Method and device for response and retransmission of multicast data in a wireless local area network |
| CN110166185A (en) * | 2019-05-15 | 2019-08-23 | 广州视源电子科技股份有限公司 | Audio data processing method and device, storage medium and processor |
| WO2021057517A1 (en) * | 2019-09-24 | 2021-04-01 | 中兴通讯股份有限公司 | Method for monitoring multicast service and board |
-
2006
- 2006-12-13 CN CNB2006101651452A patent/CN100486186C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101836393B (en) * | 2007-10-23 | 2013-03-13 | 西门子通讯公司 | Method and system for multicast statistic collection |
| US8626899B2 (en) | 2007-10-23 | 2014-01-07 | Siemens Enterprise Communications, Inc. | Method and system for multicast statistic collection |
| CN101170703B (en) * | 2007-11-23 | 2010-08-18 | 中兴通讯股份有限公司 | A method and system for monitoring network TV video quality |
| CN102017535A (en) * | 2008-01-14 | 2011-04-13 | 上海贝尔股份有限公司 | Method and system for smart protection of Ethernet virtual private-rooted multipoint service |
| CN104135721A (en) * | 2008-06-26 | 2014-11-05 | 汤姆逊许可公司 | Method and device for response and retransmission of multicast data in a wireless local area network |
| CN104135721B (en) * | 2008-06-26 | 2018-05-08 | 汤姆逊许可公司 | The response of multicast data in wireless local area networks and the method and apparatus retransmitted |
| CN110166185A (en) * | 2019-05-15 | 2019-08-23 | 广州视源电子科技股份有限公司 | Audio data processing method and device, storage medium and processor |
| CN110166185B (en) * | 2019-05-15 | 2021-07-09 | 广州视源电子科技股份有限公司 | Audio data processing method and device, storage medium and processor |
| WO2021057517A1 (en) * | 2019-09-24 | 2021-04-01 | 中兴通讯股份有限公司 | Method for monitoring multicast service and board |
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|---|---|
| CN100486186C (en) | 2009-05-06 |
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