CN101557296A - Method of quick recovery after break of multicast service, device and gateway device - Google Patents
Method of quick recovery after break of multicast service, device and gateway device Download PDFInfo
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- CN101557296A CN101557296A CNA2009100831907A CN200910083190A CN101557296A CN 101557296 A CN101557296 A CN 101557296A CN A2009100831907 A CNA2009100831907 A CN A2009100831907A CN 200910083190 A CN200910083190 A CN 200910083190A CN 101557296 A CN101557296 A CN 101557296A
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Abstract
The invention discloses a method of quick recovery after break of multicast service. The method comprises the following steps of: after a gateway device is restarted, inquiring whether the information of multicast service on demand exists at a multicast client end; when the information of the multicast service on demand exists at the multicast client end, replying a response to the gateway equipment and adding a message; and according to the reply of the multicast client end, conducting request and establishment of the multicast service by the gateway equipment. In order to realize the proposal, the invention provides a device for the quick recovery after break of multicast service and the device comprises the gateway equipment and the multicast client end. Correspondingly, the invention further provides gateway equipment for the quick recovery after break of multicast service and the gateway equipment comprises a multicast management module and a multicast client end inquiry module. By adopting the method, after the gateway equipment is restarted, the multicast service can be automatically and quickly established so as to rapidly recover multicast connection relation.
Description
Technical field
The present invention relates to the multicast service field, particularly relate to a kind of method, device and gateway device of quick recovery after break of multicast service.
Background technology
Web TV (IPTV, Internet Protocol Television) is based on the television broadcasting service media of procotol (IP), it is the product of a kind of communications industry and broadcasting and TV, medium industry integration, IPTV relies on characteristics such as its good interactivity and personalization, fast-developing, and be subjected to numerous users' welcome.
Yet, the multicast service mechanism of IPTV also has jejune aspect, for example, and when carrying out multicast service, gateway device is owing to reasons such as configuration, adjustment, power down, carry out reboot operation in the multicast playing process, multicast service will interrupt immediately, after gateway device recovers normally, because set-top box (STB) can not in time be known the state of gateway device, still, just find to receive the data message of multicast source, and cause the multicast tasks interrupt at passive receiving multicast data.After the time-out time that multicast client is waited for arrives, just can rebulid multicast service, or after the user finds interruption program, manually carry out program request and rebulid multicast service, that is: on STB again program request once just can make multicast service recover normal.Utilize STB to see that TV is an example at home with certain user, in the playing programs process of IPTV, when causing the gateway device power down owing to reasons such as misoperation of users, the program of IPTV also can interrupt at once, after the user finds, the power supply that recovers gateway device connects, gateway device restarted after 2 minutes and finishes, and STB will still be in the interruption situation this moment, can not recover normal immediately, need the user again by the remote controller of STB, reconfigure the multicast annexation and could recover this multicast service.
As seen, when this mechanism caused the gateway device abnormal restarting, whole multicast service needed the long-time passive wait timeout time to reach, or could recover during user intervention, and this user to the multicast service of use IPTV has brought great inconvenience.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method, device and gateway device of quick recovery after break of multicast service, after gateway device is restarted, does not need under the situation of user intervention, can set up multicast service automatically, fast, with rapid recovery multicast annexation.
For achieving the above object, the invention discloses a kind of method of quick recovery after break of multicast service, comprising: after gateway device was restarted, whether the inquiry multicast client existed the multicast service of program request; When there is the multicast service of program request in multicast client, replys response to gateway device and join message; According to the answer of described multicast client, this gateway device request is also set up multicast service.
Wherein, whether described inquiry multicast client exists the multicast service step of program request to be: send query message to multicast client; Multicast client checks according to this query message whether self exists the multicast service of program request.Described gateway device request is also set up the multicast service step and is: after gateway device received that described response joins message, the multicast that sends corresponding multicast service request to streaming media server joined message; This streaming media server issues the multicast data message corresponding with this multicast service request after receiving that the multicast of multicast service request joins message; Gateway device is transmitted this multicast data message to multicast client, sets up multicast service.
In the said method, described gateway device is transmitted this multicast data message step to multicast client and is: described gateway device is resolved the multicast service that obtains the program request of multicast client institute, the IP address of multicast client and the multicast group address corresponding with this multicast service from described response joins message; The multicast group address incidence relation that described gateway device is corresponding with this multicast service with the IP address of multicast client records in the multicast forward table; The multicast source of this multicast data message correspondence is analyzed and determined to gateway device, according to multicast forward table, finds corresponding multicast client by the multicast source of determining, and to this multicast client multicast data forwarding message.
For realizing said method, the invention provides a kind of device of quick recovery after break of multicast service, comprising: gateway device and multicast client; Wherein, gateway device is used for after restarting, and whether the inquiry multicast client exists the multicast service of program request, and according to the answer request of described multicast client and set up multicast service; Multicast client is used for when having the multicast service of program request, joins message to the answer of described gateway device response.
Wherein, this device also comprises: streaming media server is used to receive the multicast service request of described gateway device, and the multicast data message corresponding with this multicast service request is provided.Described gateway device specifically is used for sending query message to multicast client after restarting; Described multicast client specifically is used for according to this query message, checks whether self exists the multicast service of program request.
Accordingly, the present invention also provides a kind of gateway device of quick recovery after break of multicast service, comprising: multicast management module and multicast client enquiry module; Wherein, the multicast management module, be used for after gateway device is restarted, whether notice multicast client enquiry module inquiry multicast client exists the multicast service of program request, and inquire multicast client when having the multicast service of program request at described multicast client enquiry module, ask and set up multicast service; The multicast client enquiry module is used to inquire about the multicast service whether multicast client exists program request.
In the above-mentioned gateway device, described multicast management module comprises: initialization unit, message process unit; Wherein, initialization unit is used for after gateway device is restarted, and whether notice multicast client enquiry module inquiry multicast client exists the multicast service of program request; Described message process unit is used for inquiring multicast client when having the multicast service of program request at described multicast client enquiry module, asks and set up multicast service.Described message process unit specifically is used to receive and resolve the multicast data message that multicast response joins message and streaming media server issues that multicast client reports, to obtain multicast service; Described multicast management module also comprises retransmission unit, this retransmission unit is used for the IP address of multicast client that described message process unit is resolved to and the multicast group address incidence relation of this multicast client institute program request records multicast forward table, and joins message and to multicast client multicast data forwarding message to the streaming media server forwarding multicasting according to multicast forward table.
As can be seen from the above technical solutions, at gateway device during at power-off restarting, the present invention initiatively issues multicast inquiry (Query) message by making gateway device, make down and hang multicast client answer multicast adding (Report) message, thereby make gateway device behind power-off restarting, notify STB to rebulid multicast service on one's own initiative and connect, multicast service is quick-recovery therefore and soon.
Therefore, if the user with multicast client with on gateway device is connected, even if in the playing process, this gateway device disconnection is restarted, and also can rebulid multicast service under the situation that does not need user intervention, soon quick-recovery multicast annexation.By the present invention, can improve the gateway device reliability, and be user-friendly to multicast service to a greater degree.Fundamentally solve the problem that multicast service can not recover immediately, avoided wait timeout or user intervention in multicast service recovery process.
Description of drawings
Fig. 1 is the system architecture schematic diagram of general multicast service;
Fig. 2 is the realization flow schematic diagram of the method embodiment one of quick recovery after break of multicast service of the present invention;
Fig. 3 is the realization flow schematic diagram of the method embodiment two of quick recovery after break of multicast service of the present invention;
Fig. 4 is the apparatus structure schematic diagram of quick recovery after break of multicast service of the present invention.
Embodiment
Basic thought of the present invention is: after gateway device is restarted, issue multicast Query message from the trend multicast client, multicast client is replied response Report message after receiving this Query message, rebulids the multicast annexation, thereby reaches fast quick-recovery multicast service purpose.
Need to prove, Query message, Report message and multicast data message are the multicast protocol message, but for the description that makes each embodiment more clear, therefore according to the transmitting-receiving object and the message content of Report message, the Report message is divided into: program request Report message, multicast Report message and response Report message etc.Wherein, described program request Report message is multicast client adds a request message from multicast service to the gateway device application; Described multicast Report message is the multicast service request message that gateway device sends to streaming media server; Described response Report message is the response message that multicast client is replied the Query message that gateway device issues.
In addition, each multicast source comprises one or more multicast service, and promptly can there be one or more multicast group in corresponding multicast source in gateway device, and the corresponding concrete multicast service of each multicast group.Therefore, each multicast group address is its corresponding multicast service address.
Introduce earlier, the working mechanism of the multicast service of IPTV, as shown in Figure 1, the system architecture of multicast service comprises: streaming media server 101, the Internet 102, gateway device 103 and multicast client 104.Multicast client 104 is linked on the Internet 102 by gateway device 103, and contact streaming media server 101 is with the developing multicast business.This streaming media server 101 provides the multicast packet corresponding with multicast source to multicast client 104, and this multicast client 104 can be STB, PC (PC) and mobile phone etc.
Hanging down STB developing multicast business with gateway device below is example, and the working mechanism of the multicast service of IPTV comprises: request program, withdraw from program request and transmit program etc.Wherein, when hanging over the STB request program on the gateway device down, this STB sends program request Report message to gateway device, and this program request Report message comprises the IP address of STB and the incidence relation between the multicast group address.When gateway device receives program request Report message, after the affirmation of this program request Report packet parsing, obtain the IP address of STB and the incidence relation of multicast group address, and the IP address of this STB and the incidence relation of multicast group address are recorded in the multicast forward table.And whether gateway device also can be checked has the program request of other multicast client to cross the program of this multicast source, if do not have, then initiatively send multicast Report message to streaming media server asks multicast service to this gateway device; If there is other multicast client program request to cross the program of this multicast source, then gateway device need not send multicast Report message to streaming media server once more, directly increases the record of the multicast client IP address of this multicast source of program request on multicast forward table.Here, this multicast forward table is used to write down the incidence relation between the multicast group address of the IP address of multicast client and this multicast client request; This multicast Report message comprises the IP address of gateway device and the multicast group address that this gateway device is asked.
STB exit point sowing time, this STB sends program request to gateway device and withdraws from (Quit) message, after this gateway device is received this program request Quit message, after it is resolved affirmation, obtain the IP address of this STB and the incidence relation between the multicast group address, and from multicast forward table, find IP address and the incidence relation between the multicast group address that should STB and remove the record of this incidence relation.And, gateway device can check that also the multicast source of this STB correspondence whether also has other multicast client, if no, illustrate that then gateway device inside has not had the program of multicast client at this multicast source of program request, then gateway device sends multicast Quit message and gives this multicast source; If other multicast client is arranged, then gateway device is left intact.
During the program message in gateway device forwarding multicasting source, after gateway device is received the program of the multicast source that issues,, find out the IP address of the STB of this multicast source correspondence, and transmit the program message of this multicast source to STB by the inquiry multicast forward table; If a plurality of multicast clients are arranged, gateway device then duplicates the program message of this multicast source, is transmitted to a plurality of multicast clients synchronously.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
After the gateway device powered-off fault is restarted, be example with the recovery flow process of multicast service, the realization flow of quick recovery after break of multicast service of the present invention is described.With reference to Fig. 2, show the realization flow of the method embodiment one of quick recovery after break of multicast service of the present invention, concrete steps are as follows:
Because gateway device is restarted, the multicast forward table before restarting is cleared, and the connection of multicast service all need rebuild.After gateway device is restarted, enter normal operating conditions, gateway device carries out initial work, but multicast client is not having to send the program request Report message that multicast connects under the situation of manual intervention again immediately once more, thereby need gateway device initiatively to initiate to inquire about the requirement of multicast client, promptly require the multicast service of inquiry multicast client.
Wherein, this gateway device is according to multicast protocol, and to the Query message that multicast client sends, all multicast clients that require to hang are down answered.This Query message is mainly inquired about the multicast service whether multicast client exists program request.Here, with igmpinternet (IGMP, Internet Group ManagementProtoco1) for example illustrates described multicast protocol, this IGMP is a kind of in the multicast protocol, this IGMP be used for multicast client and and the gateway device of its direct neighbor between set up and safeguard multicast relations.This gateway device can by based on the Query message of IGMP take off the program request situation of the multicast client that hangs on it.And multicast client can be preserved the multicast service of self program request, as multicast group address, i.e. and multicast source address of multicast service correspondence etc.
Specifically, this gateway device sends the Query message of an IGMP on each internal network interface, and each that requires to be connected on its internal network interface has the multicast client of multicast service all to return a response Report message.But because gateway device does not know current on its internal network interface how many multicast clients are arranged, therefore, the purpose IP address of the Query message of this IGMP is made as 224.0.0.1, and the multicast group address of IGMP be the multicast source address of multicast service correspondence is 0.So, make all multicast clients of hanging under this gateway device all can receive this Query message, reach the purpose of all multicast services of inquiry disconnection.
After this multicast client is received the Query message, if there is the multicast service of program request, then reply this Query message to gateway device with the form of response Report message, this response Report message comprises the IP address of multicast client and the corresponding information such as multicast group address of multicast service of institute's program request, so that gateway device is by this response Report message, rebulid interrupted multicast and connect, multicast service is carried out again.
Wherein, the response Report message that multicast client is replied comprises: multicast group address is the multicast source address of multicast service correspondence, as D class address: 224.223.0.100; And the IP address of this multicast client, as the IP address of PC or STB.
After step 205, gateway device are received this response Report message, send the multicast Report message of corresponding multicast service request to streaming media server;
Gateway device is resolved this response Report message after receiving the response Report message of hanging multicast client under it, to obtain multicast service, the IP address of multicast client and the multicast group address corresponding with this multicast service.And the incidence relation that this gateway device will be resolved the IP address of the multicast group address that obtains and multicast client is recorded in the multicast forward table.This multicast forward table will write down and upgrade the IP address correlation relation of this multicast group address and multicast client.Then, gateway device is set up multicast service to the multicast source request of correspondence, promptly sends multicast Report message.This gateway device just can obtain the multicast packet of interrupted multicast service by obtaining and reporting multicast group address in the response Report message.
Wherein, this multicast forward table is used to write down the incidence relation of multicast source and multicast client; This multicast Report message accounting the IP address of gateway device and this gateway device multicast group address of asking; The multicast service request of described correspondence is meant the multicast service of multicast source correspondence in the described response Report message.
After step 206, streaming media server are received the multicast Report message of multicast service request, issue the multicast data message of the multicast service of being asked;
Streaming media server is searched the multicast packet of the multicast service correspondence of being asked in the multicast Report message, and with the form of multicast data message this multicast packet is issued on the gateway device.
Gateway device is according to multicast forward table multicast data forwarding message, promptly by analyzing, also determine the multicast source of this multicast data message correspondence, find the multicast client corresponding according to determined multicast source again with this multicast source, and to this multicast client multicast data forwarding message, thereby set up multicast service rapidly.
By the foregoing description one, thus solve gateway device unusual after, the problem of the fast quick-recovery of multicast service.The difference division of labor and concrete multicast client below in conjunction with gateway device inside, provide the realization flow of the method embodiment two of quick recovery after break of multicast service of the present invention, wherein, described gateway device comprises multicast management module and multicast client enquiry module, as shown in Figure 3, concrete steps comprise:
Step 301, the multicast management module is carried out initialization, and requires the multicast service of inquiry multicast client;
After gateway device is restarted, enter normal operating conditions, the multicast management module on the gateway device enters the initial work stage, and this multicast management module initiatively requires the multicast service of inquiry multicast client to the multicast client enquiry module.
Step 302, the multicast client enquiry module sends the Query message;
All multicast clients that the multicast client enquiry module is hung under gateway device Local Area Network side send the Query message.
After step 303, multicast client were received the Query message, the multicast management module on gateway device was replied response Report message;
This response Report message is used to rebuild multicast and connects, and this response Report message comprises: the IP address of multicast group address and multicast client.
The response Report message that step 304, multicast management module parses are received sends multicast Report message to streaming media server, requires developing multicast business again;
After this multicast management module is received this response Report message, resolve this response Report message, and will resolve the multicast group address that obtains and the IP address of multicast client is recorded in the multicast forward table, send multicast Report message to streaming media server then, require developing multicast business again.Wherein, this multicast forward table is safeguarded by the multicast management module.
After step 305, streaming media server are received multicast Report message, issue multicast data message to the multicast management module of gateway device;
Step 306 after the multicast management module is received multicast data message, is transmitted to this multicast client with this multicast data message.
Which multicast source is the multicast management module derive from according to multicast forward table by analyzing this multicast packet, finds corresponding multicast client according to this multicast source again, and to this multicast client multicast data forwarding message, thereby recover multicast service rapidly.
For each above-mentioned embodiment, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.
For realizing said method, the present invention also provides a kind of device and gateway device of quick recovery after break of multicast service, and as shown in Figure 4, this device comprises: gateway device 402 and multicast client 403; Wherein,
Said apparatus also comprises streaming media server 401, and this streaming media server 401 is used to receive the multicast service request of described gateway device 402, and issues the multicast data message corresponding with this multicast service request to described gateway device 402.Wherein, this multicast service request is that gateway device 402 sends when multicast service is set up in streaming media server 401 requests, i.e. multicast Report message.
In the said apparatus, described gateway device 402 specifically is used for sending the Query message to multicast client 403 after restarting.Described multicast client 403 specifically is used for after receiving the Query message of described gateway device 402, checks whether self exists the multicast service of program request.
Further, described gateway device 402 comprises: multicast management module 4021 and multicast client enquiry module 4022; Wherein,
Multicast management module 4021 is used for after gateway device 402 is restarted, and whether notice multicast client enquiry module 4022 inquiry multicast clients 403 exist the multicast service of program request.This multicast management module 4021 also is used for inquiring multicast client 403 when having the multicast service of program request at described multicast client enquiry module 4022, asks and set up multicast service.
Multicast client enquiry module 4022 is used to inquire about the multicast service whether multicast client 403 exists program request.
In the above-mentioned gateway device 402, described multicast management module 4021 comprises: initialization unit, message process unit and retransmission unit; Wherein,
Initialization unit is used for after gateway device is restarted, and whether notice multicast client enquiry module 4022 inquiry multicast clients 403 exist the multicast service of program request.
Message process unit, be used for inquiring multicast client when having the multicast service of program request at described multicast client enquiry module, request is also set up multicast service, that is: specifically be used to receive and resolve the multicast data message that multicast response Report message that multicast client reports and streaming media server issue, to obtain multicast service.
Retransmission unit, be used for the IP address of multicast client 403 that described message process unit is resolved to and the multicast group address incidence relation of 403 program requests of this multicast client and record multicast forward table, and according to multicast forward table to streaming media server forwarding multicasting Report message and to multicast client multicast data forwarding message.
Wherein, the incidence relation between multicast forwarding table record multicast source and the multicast client 403, i.e. the IP address of multicast client 403 and the incidence relation of multicast group address.When gateway device 402 is restarted, under the situation that multicast forward table empties, multicast client enquiry module 4022 sends the Query message to multicast client 403, after multicast client 403 is received this Query message, report response Report message immediately, thus fast quick-recovery multicast service.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, do not have the part that describes in detail among certain embodiment, can get final product referring to the associated description of other embodiment.The above only is preferred embodiment of the present invention, just is used for description and interpretation the present invention, is not to be used to limit protection scope of the present invention.Within spirit of the present invention and claim protection range, to any modification that the present invention did, be equal to replacement, all fall into protection scope of the present invention.
Claims (10)
1, a kind of method of quick recovery after break of multicast service is characterized in that, this method comprises:
After gateway device was restarted, whether the inquiry multicast client existed the multicast service of program request; When there is the multicast service of program request in multicast client, replys response to gateway device and join message;
According to the answer of described multicast client, this gateway device request is also set up multicast service.
2, the method for quick recovery after break of multicast service according to claim 1 is characterized in that, whether described inquiry multicast client exists the multicast service step of program request to be:
Send query message to multicast client;
Multicast client checks according to this query message whether self exists the multicast service of program request.
3, the method for quick recovery after break of multicast service according to claim 1 and 2 is characterized in that, described gateway device request is also set up the multicast service step and is:
After gateway device received that described response joins message, the multicast that sends corresponding multicast service request to streaming media server joined message;
This streaming media server issues the multicast data message corresponding with this multicast service request after receiving that the multicast of multicast service request joins message;
Gateway device is transmitted this multicast data message to multicast client, sets up multicast service.
4, the method for quick recovery after break of multicast service according to claim 3 is characterized in that, described gateway device is transmitted this multicast data message step to multicast client and is:
Described gateway device is resolved the multicast service that obtains the program request of multicast client institute, the IP address of multicast client and the multicast group address corresponding with this multicast service from described response joins message;
The multicast group address incidence relation that described gateway device is corresponding with this multicast service with the IP address of multicast client records in the multicast forward table;
The multicast source of this multicast data message correspondence is analyzed and determined to gateway device, according to multicast forward table, finds corresponding multicast client by the multicast source of determining, and to this multicast client multicast data forwarding message.
5, a kind of device of quick recovery after break of multicast service is characterized in that, comprising: gateway device and multicast client; Wherein,
Gateway device is used for after restarting, and whether the inquiry multicast client exists the multicast service of program request, and according to the answer request of described multicast client and set up multicast service;
Multicast client is used for when having the multicast service of program request, joins message to the answer of described gateway device response.
6, the device of quick recovery after break of multicast service according to claim 5 is characterized in that, this device also comprises:
Streaming media server is used to receive the multicast service request of described gateway device, and the multicast data message corresponding with this multicast service request is provided.
According to the device of claim 5 or 6 described quick recovery after break of multicast service, it is characterized in that 7, described gateway device specifically is used for sending query message to multicast client after restarting;
Described multicast client specifically is used for according to this query message, checks whether self exists the multicast service of program request.
8, a kind of gateway device of quick recovery after break of multicast service is characterized in that, comprising: multicast management module and multicast client enquiry module; Wherein,
The multicast management module, be used for after gateway device is restarted, whether notice multicast client enquiry module inquiry multicast client exists the multicast service of program request, and inquire multicast client when having the multicast service of program request at described multicast client enquiry module, ask and set up multicast service;
The multicast client enquiry module is used to inquire about the multicast service whether multicast client exists program request.
9, the gateway device of quick recovery after break of multicast service according to claim 8 is characterized in that, described multicast management module comprises: initialization unit, message process unit; Wherein,
Initialization unit is used for after gateway device is restarted, and whether notice multicast client enquiry module inquiry multicast client exists the multicast service of program request;
Described message process unit is used for inquiring multicast client when having the multicast service of program request at described multicast client enquiry module, asks and set up multicast service.
10, the gateway device of quick recovery after break of multicast service according to claim 9, it is characterized in that, described message process unit, specifically be used to receive and resolve the multicast data message that multicast response joins message and streaming media server issues that multicast client reports, to obtain multicast service;
Described multicast management module also comprises retransmission unit, this retransmission unit is used for the IP address of multicast client that described message process unit is resolved to and the multicast group address incidence relation of this multicast client institute program request records multicast forward table, and joins message and to multicast client multicast data forwarding message to the streaming media server forwarding multicasting according to multicast forward table.
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| CN101102274A (en) * | 2007-08-13 | 2008-01-09 | 中兴通讯股份有限公司 | A redundancy backup method of multicast source port |
| CN101159647B (en) * | 2007-10-22 | 2010-06-23 | 中国电信股份有限公司 | System and method of implementing gateway local parameter fast recovery |
| CN101557296A (en) * | 2009-05-05 | 2009-10-14 | 中兴通讯股份有限公司 | Method of quick recovery after break of multicast service, device and gateway device |
-
2009
- 2009-05-05 CN CNA2009100831907A patent/CN101557296A/en active Pending
-
2010
- 2010-04-28 WO PCT/CN2010/072306 patent/WO2010127599A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010099687A1 (en) * | 2009-03-02 | 2010-09-10 | 中兴通讯股份有限公司 | Method and device for reducing interruption time of internet protocol television multicast stream |
| WO2010127599A1 (en) * | 2009-05-05 | 2010-11-11 | 中兴通讯股份有限公司 | Quick recovery method for a multicast service after break, apparatus and gateway device thereof |
| CN107769945A (en) * | 2016-08-19 | 2018-03-06 | 中国电信股份有限公司 | For realizing the method, apparatus automatically configured and IPTV intelligent terminals |
| CN109507916A (en) * | 2017-09-14 | 2019-03-22 | 佛山市顺德区美的电热电器制造有限公司 | Method, apparatus, server and the storage medium that control household electrical appliances are resumed work |
| CN109507916B (en) * | 2017-09-14 | 2021-06-29 | 佛山市顺德区美的电热电器制造有限公司 | Method, device, server and storage medium for controlling recovery work of household appliance |
| CN114285820A (en) * | 2021-12-24 | 2022-04-05 | 凌云天博光电科技股份有限公司 | Multicast method, system and electronic equipment based on MoCA technology |
| CN114285820B (en) * | 2021-12-24 | 2024-03-29 | 凌云天博光电科技股份有限公司 | Multicast method, system and electronic equipment based on MoCA technology |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010127599A1 (en) | 2010-11-11 |
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