CN101753275A - Method, device and system for retransmission of video messages - Google Patents
Method, device and system for retransmission of video messages Download PDFInfo
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- CN101753275A CN101753275A CN 200810183441 CN200810183441A CN101753275A CN 101753275 A CN101753275 A CN 101753275A CN 200810183441 CN200810183441 CN 200810183441 CN 200810183441 A CN200810183441 A CN 200810183441A CN 101753275 A CN101753275 A CN 101753275A
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Abstract
The embodiment of the invention provides a method, a device and a system for the retransmission of video messages, relating to the field of network communication; the method for the retransmission of video messages comprises the steps: receiving and detecting a video stream; once the loss of video messages in the video stream is detected, acquiring the lost video messages; and acquiring a strategy for transmitting the lost video messages and transmitting the lost video messages to the terminal according to the strategy for transmitting the lost video messages. The method, device and system solve the problem of quite long time for video failure recovery in the prior art, which is caused by the fact that the terminal equipment acquires the lost video messages by transmitting a retransmission request after the loss in the video stream is found. The method, device and system can be applied to the transmission of video stream.
Description
Technical field
The present invention relates to network communication field, relate in particular to a kind of method, Apparatus and system of retransmission of video messages.
Background technology
IPTV utilizes broadband network, is main terminal equipment with domestic television set or computer, and the multiple digital media service that comprises TV programme is provided by internet protocol.In that to carry out internet video live, on the video traffics such as long-distance video program request, program source making, IPTV has very strong advantage.
In the IPTV system, video message is to transmit on the internet with the form of IP message, faults such as packet loss, wrong bag can occur.In order to guarantee terminal use's quality of experience of video, following solution is proposed:
Video Source (source end) sends video message to terminal equipment, at described certain network equipment of video message process, UPE (Use Provider Edge for example, the user side edge device) time, UPE with described video message when terminal equipment is transmitted, duplicate described video message to VDF (Videodistribution server, video distribution service device);
After terminal equipment receives described video message, check whether described video message is complete, lose video message if exist, the forward error correction stream that then carries by described video message and the wrong restore funcitons of described terminal equipment are repaired described video message, if can't recover, then terminal equipment will send repeat requests to VDF;
After VDF receives the repeat requests of described terminal equipment, from the video message of local cache, find the video message of described terminal equipment request, the video message of described terminal request is sent to described terminal equipment.
In said process, the video message that described VDF obtains derives from UPE, loses if described video message is transmitted in the link from Video Source to UPE, and then described VDF is imperfect from the video message that described UPE obtains.When described terminal equipment during to video message that described VDF request upstream link is lost, the described VDF video message that described upstream link is lost because of this locality does not obtain is so can not provide terminal required message.
In order to solve because of loss of link video message from Video Source to UPE, cause VDF can not provide terminal equipment the required video message of losing, propose a kind of VDF and detect the complete method of video message.By being the video message reserved storage space, check whether the sequence number of the video message in the described reserved storage space is continuous, when sequence number is discontinuous, obtain the video message of losing the sequence number correspondence, realize the integrality of the message that described VDF obtains.
State in the process in realization, the inventor finds that there are the following problems at least in the prior art: after terminal equipment finds that video flowing is lost, obtain and lose video message by sending repeat requests, cause the video failure recovery time long, make described terminal equipment miss repair time of video flowing, reduce the user experience of terminal equipment.
Summary of the invention
In order to shorten the recovery time of terminal equipment video fault, the embodiment of the invention provides a kind of method, Apparatus and system of retransmission of video messages.
A kind of method of retransmission of video messages comprises:
Receive and detect video flowing;
When in detecting described video flowing, having video message to lose, obtain the described video message of losing;
Obtain and send the strategy lose video message, and lose the strategy of video message, send the described video message of losing to terminal according to described transmission.
A kind of retransmission arrangement comprises:
The video flowing pretreatment module is used for receiving and detecting video flowing;
Acquisition module is used for obtaining the described video message of losing when detecting described video flowing and have video message to lose;
Sending module is used to obtain and sends the strategy of losing video message, and loses the strategy of video message according to described transmission, sends the described video message of losing to terminal.
A kind of retransmission system comprises: source end and retransmission arrangement,
Described source end is used to send video flowing;
Described retransmission arrangement is used for receiving and detecting video flowing; When in detecting described video flowing, having video message to lose, obtain the described video message of losing; Obtain and send the strategy lose video message, and lose the strategy of video message, send the described video message of losing to terminal according to described transmission.
The method of the retransmission of video messages that the embodiment of the invention provides, Apparatus and system, initiatively send to terminal equipment by losing video message, reduce terminal equipment and obtain the time of losing video message, terminal equipment is in time obtained lose the reparation that video message is realized video flowing, after overcoming in the prior art terminal equipment and finding that video flowing is lost, obtain and lose video message by sending repeat requests, the problem that the video failure recovery time is prolonged has guaranteed the user experience of terminal equipment.
Description of drawings
Fig. 1 is the method flow diagram of the retransmission of video messages of the specific embodiment of the invention one;
Fig. 2 is the method flow diagram of the retransmission of video messages of the specific embodiment of the invention two;
Fig. 3 is the method flow diagram of the retransmission of video messages of the specific embodiment of the invention three;
The retransmission arrangement structural representation that Fig. 4 provides for the embodiment of the invention;
The another kind of retransmission arrangement structural representation that Fig. 5 provides for the embodiment of the invention;
The schematic diagram of the communication system that Fig. 6 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one
As shown in Figure 1, the embodiment of the invention provides a kind of method of retransmission of video messages, comprising:
S101, reception also detect video flowing;
S102, when in detecting described video flowing, having video message to lose, obtain the described video message of losing;
S103, obtain and send the strategy lose video message, and lose the strategy of video message, send the described video message of losing to terminal according to described transmission.
The method of the retransmission of video messages that the embodiment of the invention provides, initiatively send to terminal equipment by losing video message, reduce terminal equipment and obtain the time of losing video message, terminal equipment is in time obtained lose the reparation that video message is realized video flowing, after overcoming in the prior art terminal equipment and finding that video flowing is lost, obtain and lose video message by sending repeat requests, the problem that the video failure recovery time is prolonged has guaranteed the user experience of terminal equipment.
Below in conjunction with specific embodiments and the drawings the present invention is further explained.
For the ease of understanding, the embodiment of the invention two describes for example with the VDF (Video distribution server, video distribution service device) that hangs in UPE (Use Provider Edge, user side edge device) side.
Embodiment two
As shown in Figure 2, the method for the retransmission of video messages that the embodiment of the invention provides, concrete steps comprise:
S201, VDF obtain video flowing;
Video Source (source end) sends video flowing to terminal equipment, at described video flowing process UPE (UseProvider Edge, the user side edge device) time, described UPE with described video flowing when terminal equipment is transmitted, duplicate described video and flow to VDF (Visual distribute-Server, video distribution service device).
S202, VDF check described video flowing integrality;
Concrete, check in the prior art that the integrality of described video flowing all is adapted to this step, repeat no more.
If described video flowing is imperfect, then enter S203.
S203, VDF obtain and lose video message;
VDF sends the repeat requests of losing video message to source end or upstream retransmission service device in the embodiment of the invention, the wherein said video message of losing is a video message of losing the sequence number correspondence in the described sequence, obtain the video message of losing that described source end or retransmission service device send, realize the complete of video message among the described VDF.
S204, basis are lost the strategy of video message, and VDF sends the described video message of losing.
Concrete, VDF obtains and sends the strategy of losing video message, and described strategy is for sending the video message of all losing.Obtain described method of losing the strategy of video message in the prior art and all be applicable to this step, repeat no more.
In the embodiment of the invention, VDF sends and all loses video message.
The method of the retransmission of video messages that the embodiment of the invention provides, initiatively send to terminal equipment by losing video message, reduce terminal equipment and obtain the time of losing video message, terminal equipment is in time obtained lose the reparation that video message is realized video flowing, after overcoming in the prior art terminal equipment and finding that video flowing is lost, obtain and lose video message by sending repeat requests, the problem that the video failure recovery time is prolonged has guaranteed the user experience of terminal equipment.Lose video message by initiatively sending, avoid VDF, reduced self loading of VDF, improve the useful life of server because of receiving the problem that a large amount of repeat requests are paralysed simultaneously.
Embodiment 3
As shown in Figure 3, the embodiment of the invention two is similar with embodiment one, and difference is that the video message of losing of transmission can be all, also can be part.Detailed process comprises:
S301-S303, identical with S201-S203 among the embodiment one repeats no more.
S304, VDF obtain described priority of losing video message;
Concrete, described VDF after described source end obtains repeat requests, by described type of losing the Frame of video message, determines described importance of losing video message to the request of source end transmission retransmission of lost message.
For example described video message adopts the MPEG-2 coded system, and the sequence of data frames that described mpeg encoded mode is exported comprises I frame, P frame and B frame.Wherein the I frame is most important key frame, and the losing of I frame data probably causes P frame after the described I frame and the B frame can't normal decoder, seriously reduces video quality; The P frame is a time important key frame, and the losing of P frame causes P frame after the described P frame and the B frame can't normal decoder, can cause video distortion; The B frame is non-key frame, and the B LOF only can influence the details of picture, under the situation of B LOF negligible amounts, can ignore the influence to image quality.
Described source end obtains the data frame type of losing video message; It is described that to lose data frame type in the video message be that the video message of losing of I frame is set to importance information and is highest 1 grade; It is described that to lose data frame type in the video message be that to be set to importance information be 2 grades for the video message of losing of P frame; It is described that to lose data frame type in the video message be that to be set to importance information be 3 grades for the video message of losing of B frame.Described source end adds the importance sign and sends in the described reserved field of losing video message or extended field.
Described VDF determines the described priority of messages of losing according to described importance sign of losing in the video message.Wherein importance is high more loses video message, and priority is high more.
The embodiment of the invention is that MPEG-2 is that example describes with the coded system, and is suitable equally to the video message that other coded systems generate.Because of method is similar, repeat no more.
Need to prove that the method for obtaining the priority of losing video message is not limited to this, for example, after VDF obtains and loses the rear video message,, determine described priority of losing video message according to the described data frame type of losing video message.Because of method is similar, repeat no more.
S305, VDF lose the strategy of video message according to described transmission, according to described order of losing video message priority, send the described video message of losing.
Concrete, described VDF obtains and sends the strategy of losing video message, and wherein present embodiment is that server self load is that example describes with described transmission strategy.Obtain described method of losing the strategy of video message in the prior art and all be applicable to this step, repeat no more.
The strategy that message is lost in wherein said transmission also can be according to the ruuning situation of the state and the server of transmission link, and self adaptation is provided with and sends the strategy of losing video message.
VDF obtains local current management information, and wherein said management information comprises the CPU usage that server is current, transmission link available bandwidth etc.Data in the management information that this locality is current and the local threshold ratio that is provided with, the wherein said local threshold value that is provided with can be to obtain by statistics in the past, but is not limited thereto., then send and all lose video message less than the described local threshold value that is provided with as if the data in the current management information in described this locality to described terminal equipment; Otherwise, send the described the highest video message of video message medium priority of losing to described terminal equipment.
Under the situation that transmission link is had much to do, the highest video message of video message medium priority of losing that described VDF will obtain sends to terminal equipment, described terminal equipment is in time repaired the local video message by using the highest video message of losing of priority, the video message of losing to be sent such as choose by transmission, alleviate self loading of VDF, under the condition that guarantees the normal operation of VDF, avoid causing network congestion, the rational Application Internet resources.
The embodiment of the invention describes with the example that is applied as on network equipment VDF, and VDF can be independent equipment, also can be for plug-in or be built in access device, for example: DSLAM, OLT, BRAS, NPE or UPE; But be not limited thereto, suitable equally on other network equipments, similar because of method with flow process, do not repeat them here.
The method of the retransmission of video messages that the embodiment of the invention provides, initiatively send to terminal equipment by losing video message, reduce terminal equipment and obtain the time of losing video message, terminal equipment is in time obtained lose the reparation that video message is realized video flowing, after overcoming in the prior art terminal equipment and finding that video flowing is lost, obtain and lose video message by sending repeat requests, the problem that the video failure recovery time is prolonged has guaranteed the user experience of terminal equipment.Video message is lost in the transmission of self loading according to current server, in the time of can avoiding server overload, send the problem that message causes servers go down of too much losing, and then realization makes full use of the server surplus resources, the purpose that makes terminal equipment obtain losing video message as early as possible, the user experience of assurance terminal equipment.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
As shown in Figure 4, the embodiment of the invention four provides a kind of retransmission arrangement, comprising:
Video flowing pretreatment module 401 is used for receiving and detecting video flowing;
Sending module 403 is used to obtain and sends the strategy of losing video message, and loses the strategy of video message according to described transmission, sends the described video message of losing to terminal.
Optionally, as shown in Figure 5, described acquisition module 402 also comprises: priority acquiring unit 404 is used to obtain the priority of losing video message.
Optional described sending module 403 also comprises: priority transmitting element 405, be used for losing the strategy of video message according to described transmission, and according to described order of losing video message priority, send the described video message of losing.
The device of the retransmission of video messages that the embodiment of the invention provides can be used in combination with the method that the embodiment of the invention provides, initiatively send to terminal equipment by losing video message, reduce terminal equipment and obtain the time of losing video message, after overcoming in the prior art terminal equipment and finding that video flowing is lost, terminal equipment is in time obtained lose the reparation that video message is realized video flowing, obtain and lose video message by sending repeat requests, make the problem of video failure recovery time prolongation, guaranteed the user experience of terminal equipment.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
As shown in Figure 6, a kind of retransmission system that the embodiment of the invention five provides comprises: source end and retransmission arrangement,
Described source end 601 is used to send video flowing;
Described retransmission arrangement 602 is used for receiving and detecting video flowing; When in detecting described video flowing, having video message to lose, obtain the described video message of losing; Obtain and send the strategy lose video message, and lose the strategy of video message, send the described video message of losing to terminal according to described transmission.
Further, described source end 601 also is used for when obtaining the retransmission of lost video message, determines described importance of losing video message, and sends the video message of losing that carries the importance sign;
Described retransmission arrangement 602 also is used for according to the importance sign of losing video message, determine described priority of losing video message, and lose the strategy of video message according to described transmission, according to described order of losing video message priority, send the described video message of losing.
The system of the retransmission of video messages that the embodiment of the invention provides can be used in combination with method, the device that the embodiment of the invention provides, initiatively send to terminal equipment by losing video message, reduce terminal equipment and obtain the time of losing video message, terminal equipment is in time obtained lose the reparation that video message is realized video flowing, after overcoming in the prior art terminal equipment and finding that video flowing is lost, obtain and lose video message by sending repeat requests, make the problem of video failure recovery time prolongation, guaranteed the user experience of terminal equipment.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (10)
1. the method for a retransmission of video messages is characterized in that, comprising:
Receive and detect video flowing;
When in detecting described video flowing, having video message to lose, obtain the described video message of losing;
Obtain and send the strategy lose video message, and lose the strategy of video message, send the described video message of losing to terminal according to described transmission.
2. the method for retransmission of video messages according to claim 1 is characterized in that, describedly loses the strategy of video message according to described transmission, sends the described video message of losing and comprises:
Lose the strategy of video message according to described transmission,, send the described video message of losing according to described order of losing video message priority.
3. the method for retransmission of video messages according to claim 2 is characterized in that, describedly loses the strategy of video message according to described transmission, according to described order of losing video message priority, sends the described video message of losing and comprises:
The strategy of losing video message when described transmission is during for local self load, obtains local current self load, according to described current self load, sends the video message of losing of corresponding priority;
Wherein also comprise before sending the strategy lose video message obtaining:
Threshold value of at least one local self load is set, and when being arranged on current self load greater than described threshold value, at least one priority of transmission lose video message.
4. according to the method for claim 2 or 3 described retransmission of video messages, it is characterized in that, describedly lose the strategy of video message,, send and describedly also comprise before losing video message according to described order of losing video message priority according to described transmission:
Obtain the priority of losing video message, wherein said priority can be determined the importance of user experience by losing video message.
5. the method for biography video message according to claim 4 is characterized in that, the described priority of losing video message of obtaining specifically comprises:
When the source end obtains the request of retransmission of lost video message, determine described importance of losing video message.Obtain the described video message of losing of the importance sign of carrying, determine described priority of losing video message;
Or
Obtain and lose video message,, obtain described priority of losing video message by determining described importance of losing message.
6. a retransmission arrangement is characterized in that, comprising:
The video flowing pretreatment module is used for receiving and detecting video flowing;
Acquisition module is used for obtaining the described video message of losing when detecting described video flowing and have video message to lose;
Sending module is used to obtain and sends the strategy of losing video message, and loses the strategy of video message according to described transmission, sends the described video message of losing to terminal.
7. retransmission arrangement according to claim 6 is characterized in that, described acquisition module also comprises:
The priority acquiring unit is used to obtain the priority of losing video message.
8. retransmission arrangement according to claim 7 is characterized in that, described sending module also comprises:
The priority transmitting element is used for losing according to described transmission the strategy of video message, according to described order of losing video message priority, sends the described video message of losing.
9. a retransmission system is characterized in that, comprising: source end and retransmission arrangement,
Described source end is used to send video flowing;
Described retransmission arrangement is used for receiving and detecting video flowing; When in detecting described video flowing, having video message to lose, obtain the described video message of losing; Obtain and send the strategy lose video message, and lose the strategy of video message, send the described video message of losing to terminal according to described transmission.
10. retransmission system according to claim 9 is characterized in that,
Described source end also is used for when obtaining the retransmission of lost video message, determines described importance of losing video message, and sends the video message of losing that carries the importance sign;
Described retransmission arrangement also is used for according to the importance sign of losing video message, determine described priority of losing video message, and lose the strategy of video message according to described transmission, according to described priority of losing video message, send the described video message of losing.
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| CN 200810183441 CN101753275A (en) | 2008-12-15 | 2008-12-15 | Method, device and system for retransmission of video messages |
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| CN 200810183441 CN101753275A (en) | 2008-12-15 | 2008-12-15 | Method, device and system for retransmission of video messages |
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| CN104348577A (en) * | 2013-08-01 | 2015-02-11 | 波利康公司 | Packet repeating strategy for improving video quality of cloud conference |
| WO2015058590A1 (en) * | 2013-10-21 | 2015-04-30 | 腾讯科技（深圳）有限公司 | Control method, device and system for live broadcast of video, and storage medium |
| CN105450969A (en) * | 2014-06-16 | 2016-03-30 | 联想(北京)有限公司 | Real-time video data transmission method and electronic equipment |
| CN107277423A (en) * | 2017-07-28 | 2017-10-20 | 北京小米移动软件有限公司 | The method and device that packet loss is retransmitted |
| CN107872675A (en) * | 2016-09-26 | 2018-04-03 | 联芯科技有限公司 | The restorative procedure of video data based on H264 and the data terminal of transmission |
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| CN104348577A (en) * | 2013-08-01 | 2015-02-11 | 波利康公司 | Packet repeating strategy for improving video quality of cloud conference |
| WO2015058590A1 (en) * | 2013-10-21 | 2015-04-30 | 腾讯科技（深圳）有限公司 | Control method, device and system for live broadcast of video, and storage medium |
| CN105450969A (en) * | 2014-06-16 | 2016-03-30 | 联想(北京)有限公司 | Real-time video data transmission method and electronic equipment |
| CN105450969B (en) * | 2014-06-16 | 2019-01-15 | 联想(北京)有限公司 | A kind of real time video data transmission method and electronic equipment |
| US10601554B2 (en) | 2015-09-21 | 2020-03-24 | Huawei Technologies Co., Ltd. | Packet transmission method and user equipment |
| US11153041B2 (en) | 2015-09-21 | 2021-10-19 | Huawei Technologies Co., Ltd. | Packet transmission method and user equipment |
| CN107872675A (en) * | 2016-09-26 | 2018-04-03 | 联芯科技有限公司 | The restorative procedure of video data based on H264 and the data terminal of transmission |
| CN107872675B (en) * | 2016-09-26 | 2020-06-16 | 联芯科技有限公司 | H.264-based video data repair method and transmission data terminal |
| CN107277423A (en) * | 2017-07-28 | 2017-10-20 | 北京小米移动软件有限公司 | The method and device that packet loss is retransmitted |
| CN107277423B (en) * | 2017-07-28 | 2020-10-09 | 北京小米移动软件有限公司 | Method and device for packet loss retransmission |
| CN112655189A (en) * | 2020-05-25 | 2021-04-13 | 深圳市大疆创新科技有限公司 | Data transmission method, device, sending end and receiving end |
| WO2021237400A1 (en) * | 2020-05-25 | 2021-12-02 | 深圳市大疆创新科技有限公司 | Method and apparatus for transmitting data, sending end, and receiving end |
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Application publication date: 20100623 |