CN104995923A

CN104995923A - Video acceleration method, client and network element

Info

Publication number: CN104995923A
Application number: CN201380003779.6A
Authority: CN
Inventors: 王斌; 赵其勇; 王峰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-18
Filing date: 2013-12-18
Publication date: 2015-10-21
Anticipated expiration: 2033-12-18
Also published as: WO2015089772A1; CN104995923B

Abstract

Provided are a video acceleration method, a client and a network element. The method comprises: a client senses the amount of video buffered in a playback buffer area; when the amount of video is less than or equal to a lower limit of a buffer threshold, a video acceleration request is sent to a core network side network element, so that the core network side network element accelerates downloading of the video currently buffering in the broadcast buffer area, thereby ensuring that the playback buffer area stores a sufficient amount of video data. Within a mobile network environment, video pausing in a client is therefore reduced.

Description

Video acceleration method, client and network element

Technical field

The present embodiments relate to video display arts field, more particularly to a kind of video acceleration method, client and network element.Background technology

At present, layer on internet（Over the Top, OTT) video website provide the video overwhelming majority be by HTTP（Hyper Text Transport Protocol, HTTP), such as HTTP progressive downloads（HTTP Progressive Download, HPD), HTTP Streaming Medias（HTTP Live Streaming, HLS) etc. all employ transmission control protocol in transport layer to client transmissions, HPD and HLS（Transmission Control Protocol, TCP) .Due to the reliable transporting of Transmission Control Protocol, when network is more stable, it is not in Caton phenomenon that client is general during video is played.With continuing to develop for technology, client can be downloaded during video is played, for example, a certain amount of video is downloaded in screen buffer, so as to avoid the video caused due to network fluctuation from stagnating；Meanwhile, the pressure of server bandwidth during by flow control mechanism to mitigate video download.

In the prior art, for example, visiing spy（) etc. Bytemobile the Pacing schemes that mobile video optimization company proposes, bandwidth waste is avoided while foradownloaded video to reach, and reduce the influence to server bandwidth,-as the downloading rate of video is adjusted in network side so that video downloading rate is mutually matched with video actual bit rate.As an example it is assumed that current video code rate is 500kbps, then it can be controlled by controlling downloading rate consistent with video code rate, and by video to be played has been downloaded in screen buffer in 5 seconds.

In above-mentioned technical proposal, due to the downloading rate of video can be controlled so that the data volume in the screen buffer of client is not usually a lot.However, under mobile network environment, changes in network condition is fast, and network connection is unstable, easily there is the phenomenon that video data speed of download is relatively slow or even interrupts.After the data volume of screen buffer is exhausted, there is video cardton phenomenon in client.The content of the invention

The embodiment of the present invention provides a kind of video acceleration method, client and network element, realizes under mobile network environment, reduces client and the purpose of video cardton phenomenon occurs. One side, the embodiment of the present invention provides a kind of video acceleration method, including：Client determines the amount of video cached in play buffer；

The client judges whether the amount of video is less than or equal to the lower limit of buffer threshold；

If the amount of video is less than or equal to the lower limit of the buffer threshold, the client sends video acceleration request to core-network side network element so that the core-network side network element carries out acceleration download to the video buffered in the play buffer.

In the possible implementation of in the first aspect the first, if the amount of video is less than or equal to the lower limit of the buffer threshold, then the client sends video acceleration request to core-network side network element, so that the core-network side network element carries out acceleration download to the video buffered in the play buffer, including：

If the amount of video is less than or equal to the lower limit of the buffer threshold, the server of the video then buffered described in the client to offer sends the video acceleration request, accelerate the bandwidth needed for downloading so that the server is determined and sent to the core-network side network element, and then cause the core-network side network element to carry out acceleration download to the video buffered.

In second of possible implementation in the first aspect, the client judges whether the amount of video is less than or equal to after the lower limit of buffer threshold, if the amount of video is less than or equal to the lower limit of the buffer threshold, then the client sends video acceleration request to core-network side network element, so that before the core-network side network element carries out acceleration download to the video that is being buffered in the play buffer, in addition to：

The client determines to accelerate the bandwidth needed for downloading and the video acceleration request is authenticated.

With reference to the on one side, the first or second of possible implementation of one side, in the third possible implementation in the first aspect, if the amount of video is more than the upper limit of the buffer threshold, then the client sends releasing request to core-network side network element so that the dispatching priority of the video buffered described in the core-network side network element reduction.

With reference to the third possible implementation of one side, in the 4th kind of possible implementation in the first aspect, if the amount of video is more than the upper limit of the buffer threshold, then the client sends releasing request to core-network side network element, so that the dispatching priority of the video buffered described in the core-network side network element reduction, including：

If the amount of video is more than the upper limit of the buffer threshold, the client sends releasing request to the server for providing the current video, so that the server determines that the reduction dispatching priority needs The bandwidth of adjustment is simultaneously sent to the core-network side network element, and then causes the dispatching priority of video buffered described in the core-network side network element reduction.

With reference to the third possible implementation of one side, in the 5th kind of possible implementation in the first aspect, if the amount of video is more than the upper limit of the buffer threshold, then the client sends releasing request to core-network side network element, so that before the dispatching priority of the video buffered described in the core-network side network element reduction, in addition to：

The client determines that the reduction dispatching priority needs the bandwidth of adjustment and the releasing request is authenticated.

Second aspect, the embodiment of the present invention provides a kind of video acceleration method, including：

Core-network side network element receives the video acceleration request that client is sent, and the video acceleration request is that the client determines the amount of video cached in play buffer and judges to send when the amount of video is less than or equal to the lower limit of buffer threshold；

The core-network side network element carries out acceleration download to the video buffered in the play buffer.In the possible implementation of in second aspect the first, the core-network side network element receives the video acceleration request that client is sent, including：

The core-network side network element, which receives the video acceleration request that the client sends via the server for providing the video buffered, the server is determined accelerates the bandwidth needed for download and the authentication to the video acceleration request；

The core-network side network element carries out acceleration download to the video buffered in the play buffer, including：

Bandwidth of the core-network side network element according to needed for the acceleration download that the server is provided and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

In second of possible implementation in second aspect, the core-network side network element carries out acceleration download to the video buffered in the play buffer, including：

Bandwidth of the core-network side network element according to needed for the acceleration download that the client is provided and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

With reference to the first or second of possible implementation of second aspect, second aspect, in the third possible implementation in second aspect, the core-network side network element receives the releasing request of the transmission of the client, and the releasing request is that the client determines the amount of video cached in the play buffer and judges to send when the amount of video is more than the upper limit of the buffer threshold； The dispatching priority of the video buffered described in the core-network side network element reduction.

With reference to the third possible implementation of second aspect, in the 4th kind of possible implementation in second aspect, the core-network side network element receives the releasing request of the transmission of the client, including：The core-network side network element receives the client reduces bandwidth and the authentication to the releasing request that the dispatching priority needs to adjust via what the releasing request, the server of the server transmission of the video buffered described in offer were determined；

The dispatching priority of the video buffered described in the core-network side network element reduction, including：The reduction dispatching priority that the core-network side network element is provided according to the server needs the bandwidth and the authentication to the releasing request adjusted, the dispatching priority of the video buffered described in reduction.

With reference to the third possible implementation of second aspect, in the 5th kind of possible implementation in second aspect, the core-network side network element receives the releasing request of the transmission of the client, including：The reduction dispatching priority that the core-network side network element is provided according to the client needs the bandwidth and the authentication to the releasing request adjusted, the dispatching priority of the video buffered described in reduction.

3rd aspect, the embodiment of the present invention provides a kind of video acceleration method, including：

Wireless access net side network element according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in the play buffer determines the dispatch weight of video buffered in the play buffer；

Whether the wireless access net side network element judges the dispatch weight higher than default weight；

If the dispatch weight is higher than default weight, the wireless access net side network element carries out air-interface scheduling to the video buffered in the play buffer, to carry out acceleration download to the video buffered in the play buffer.

In the first possible implementation of the 3rd aspect, the wireless access net side network element is according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in the play buffer, before determining the dispatch weight of video that is being buffered in the play buffer, in addition to：

The wireless access net side network element determines the amount of video cached in the play buffer；Or, the wireless access net side network element receives the amount of video information that client is sent, and the amount of video information carries the amount of video cached in the play buffer.

It is described wirelessly to connect if the dispatch weight is less than default weight in second of possible implementation of the 3rd aspect with reference to the 3rd aspect or the first possible implementation of the 3rd aspect Enter net side network element and air-interface scheduling is carried out to the video buffered in the play buffer, to reduce the dispatching priority of the video buffered.

4th aspect, the embodiment of the present invention provides a kind of client, including：

Determining module, for determining the amount of video cached in play buffer；

Judge module, for judging whether the amount of video that the determining module determines is less than or equal to the lower limit of buffer threshold；

Sending module, if judging that the amount of video is less than or equal to the lower limit of the buffer threshold for the judge module, then the client sends video acceleration request to core-network side network element so that the core-network side network element carries out acceleration download to the video buffered in the play buffer.

In the first possible implementation of the 4th aspect, the sending module, if judging that the amount of video is less than or equal to the lower limit of the buffer threshold specifically for the judge module, then the video acceleration request is sent to the server of the video buffered described in offer, accelerate the bandwidth needed for downloading so that the server is determined and sent to the core-network side network element, and then cause the core-network side network element to carry out acceleration download to the video buffered.

In second of possible implementation of the 4th aspect, the client also includes：Processing module, for determining the bandwidth needed for accelerating to download and being authenticated to the video acceleration request.With reference to the first or second of possible implementation of the 4th aspect, the 4th aspect, in the third possible implementation of the 4th aspect, the sending module, if being additionally operable to the judge module judges that the amount of video is more than the upper limit of the buffer threshold, then releasing request is sent to core-network side network element so that the dispatching priority of the video buffered described in the core-network side network element reduction.

With reference to the third possible implementation of the 4th aspect, in the 4th kind of possible implementation of the 4th aspect, the sending module, if judging that the amount of video is more than the upper limit of the buffer threshold specifically for the judge module, then releasing request is sent to the server for providing the current video, so that the server determines that the reduction dispatching priority needs the bandwidth of adjustment and sent to the core-network side network element, and then cause the dispatching priority of video buffered described in the core-network side network element reduction.

With reference to the third possible implementation of the 4th aspect, in the 5th kind of possible implementation of the 4th aspect, the client also includes：

Processing module, the bandwidth adjusted for determining the reduction dispatching priority to need is simultaneously authenticated to the releasing request. 5th aspect, the embodiment of the present invention provides a kind of core-network side network element, including：Receiving module, the video acceleration request for receiving client transmission, the video acceleration request is that the client determines the amount of video cached in play buffer and judges to send when the amount of video is less than or equal to the lower limit of buffer threshold；

Processing module, for carrying out acceleration download to the video buffered in the play buffer.In the first possible implementation of the 5th aspect, the receiving module, the bandwidth needed for the acceleration download that the video acceleration request sent specifically for the reception client via the server of the video buffered described in offer, the server are determined and the authentication to the video acceleration request；

The processing module, the bandwidth needed for the acceleration download provided specifically for the server received according to the receiving module and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

In the 5th kind of possible implementation of the 5th aspect, the processing module, bandwidth needed for being downloaded specifically for the acceleration provided according to the client and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

With reference to the first or second of possible implementation of the 5th aspect, the 5th aspect, in the third possible implementation of the 5th aspect, the receiving module, it is additionally operable to receive the releasing request of the transmission of the client, the releasing request is that the client determines the amount of video cached in the play buffer and judges to send when the amount of video is more than the upper limit of the buffer threshold；

The processing module, is additionally operable to the dispatching priority of video buffered described in reduction.

With reference to the third possible implementation of the 5th aspect, in the 4th kind of possible implementation of the 5th aspect, the receiving module, the reduction dispatching priority that the releasing request, the server sent specifically for receiving the client via the server of the video buffered described in offer is determined needs the bandwidth and the authentication to the releasing request adjusted；

The processing module, the bandwidth and the authentication to the releasing request adjusted is needed specifically for the reduction dispatching priority that the server received according to the receiving module is provided, the dispatching priority of the video buffered described in reduction.

With reference to the third possible implementation of the 5th aspect, in the 5th kind of possible implementation of the 5th aspect, the processing module, specifically for bandwidth and the authentication to the releasing request that the dispatching priority needs are adjusted that reduce provided according to the client, buffered described in reduction The dispatching priority of video.

6th aspect, the embodiment of the present invention provides a kind of wireless access net side network element, including：Dispatch weight determining module, for according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in the play buffer determines the dispatch weight of video buffered in the play buffer；

Judge module, for judging whether the dispatch weight that the dispatch weight determining module is determined is higher than default weight；

Air-interface scheduling module, if judging that the dispatch weight is higher than default weight for the judge module, air-interface scheduling is carried out to the video buffered in the play buffer, to carry out acceleration download to the video buffered in the play buffer.

In the first possible implementation of the 6th aspect, the wireless access net side network element, in addition to：

Amount of video determining module, for the amount of video for determining to have cached in the play buffer；Or, receiving module, the amount of video information for receiving client transmission, the amount of video information carries the amount of video cached in the play buffer.

With reference to the 6th aspect or the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect, the air-interface scheduling module, if being additionally operable to the judge module judges that the dispatch weight is less than default weight, air-interface scheduling then is carried out to the video buffered in the play buffer, to reduce the dispatching priority of the video buffered.

7th aspect, the embodiment of the present invention provides a kind of client, including：Processor and memory, the memory storage execute instruction, when the client is run, communicated between the processor and the memory, execute instruction described in the computing device cause the client executing as above the on one side, one side the first to any possible implementation in the 5th kind.

8th aspect, the embodiment of the present invention provides a kind of core-network side network element, including：Processor and memory, the memory storage execute instruction, when the core-network side network element is run, communicated between the processor and the memory, execute instruction described in the computing device cause the core-network side network element perform as above second aspect, second aspect the first to any possible implementation in the 5th kind.

9th aspect, the embodiment of the present invention provides a kind of wireless access net side network element, including：Processor and memory, the memory storage execute instruction, when the wireless access net side network element is run, institute State and communicated between processor and the memory, execute instruction described in the computing device causes the wireless access net side network element to perform the first or second of possible implementation of as above the 3rd aspect, the 3rd aspect.

Video acceleration method provided in an embodiment of the present invention, client and network element, the amount of video that client has been cached by perceiving in play buffer, when amount of video is less than or equal to the lower limit of buffer threshold, video acceleration request is sent to core-network side network element, so that core-network side network element carries out acceleration download to the video buffered in play buffer, ensure that play buffer stores enough video datas, realize under mobile network environment, reduce client and the purpose of video cardton phenomenon occur.Illustrate the flow chart that Fig. 1 is video acceleration method embodiment one of the present invention；

Fig. 2 is the flow chart of video acceleration method embodiment two of the present invention；

Fig. 3 is the flow chart of video acceleration method embodiment three of the present invention；

Fig. 4 is the signaling diagram of video acceleration method example IV of the present invention；

Fig. 5 is the signaling diagram of video acceleration method embodiment five of the present invention；

Fig. 6 is the flow chart of video acceleration method embodiment six of the present invention；

Fig. 7 A are the process schematic of video acceleration method embodiment seven of the present invention；

Fig. 7 B are the idiographic flow flow chart of RRM algorithms in Fig. 7 A；

Fig. 8 A are the process schematic of video acceleration method embodiment eight of the present invention；

Fig. 8 B are the signaling diagram of RRM algorithms in Fig. 8 A；

Fig. 9 is the structural representation of client embodiment one of the present invention；

Figure 10 is the structural representation of client embodiment two of the present invention；

Figure 11 is the structural representation of core-network side network element embodiment one of the present invention；

Figure 12 is the structural representation of wireless access net side network element embodiment one of the present invention；

Figure 13 is the structural representation of wireless access net side network element embodiment two of the present invention；

Figure 14 is the structural representation of client embodiment three of the present invention；

Figure 15 is the structural representation of core-network side network element embodiment two of the present invention；

Figure 16 is the structural representation of wireless access net side network element embodiment three of the present invention.Embodiment To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Fig. 1 is the flow chart of video acceleration method embodiment one of the present invention, and the present embodiment is that the present invention will be described in detail from the angle of client, it is adaptable under mobile network, the scene of unstable networks.Specifically, to include Yi Xia Walk rapid by the present embodiment Bao：

101st, client determines the amount of video cached in play buffer.

In the embodiment of the present invention, client is the IOS operating systems or Android of the terminal with video playback capability, such as current main flow（Android) the terminal of operating system, under IOS or Android operation system, client supports browser or player of HPD/HLS agreements etc..

During this Walk is rapid, the client with video playback capability determines the amount of video cached in current play buffer, that is, determines remaining playable amount of video.For example, client determines the video slicing quantity of buffered video in play buffer（It is individual）, the playable duration of buffered video（Second）Or the data volume that buffered video can play（Byte）Deng.

102nd, client judges whether amount of video is less than or equal to the lower limit of buffer threshold.

Client is previously provided with buffer threshold as trigger condition, for example, set lower limit (Threshold MIN), the upper limit of buffer threshold of buffer threshold（Threshold MAX) .During implementing, the buffer threshold can be fixed value, dynamically can also be updated by server etc..

If the 103, amount of video is less than or equal to the lower limit of buffer threshold, client sends video acceleration request to core-network side network element so that core-network side network element carries out acceleration download to the video buffered in play buffer.

During this Walk is rapid, when judging that the amount of video in play buffer is less than lower limit, illustrate the amount of video very little cached in play buffer, now client sends video acceleration request to core-network side network element, trigger core-network side network element and higher bandwidth etc. is provided, to carry out acceleration download to the video buffered in play buffer.

Optionally, when judging that the amount of video in play buffer is higher than the upper limit, illustrate to have cached sufficient video in play buffer, without having to worry about the video cardton phenomenon caused due to unstable networks.Now, client can also be sent releasing request to core-network side network element, be triggered core with without any processing The dispatching priority of video that net reduction is being buffered, influence to server bandwidth is avoided by reducing the modes such as bandwidth.

Video acceleration method provided in an embodiment of the present invention, the amount of video that client has been cached by perceiving in play buffer, when amount of video is less than or equal to the lower limit of buffer threshold, video acceleration request is sent to core-network side network element, so that core-network side network element carries out acceleration download to the video buffered in play buffer, ensure that play buffer stores enough video datas, realize under mobile network environment, reduce client and the purpose of video cardton phenomenon occur.

Fig. 2 is the flow chart of video acceleration method embodiment two of the present invention, and the present embodiment is that the present invention will be described in detail from the angle of core-network side network element, it is adaptable under mobile network, the scene of unstable networks.Specifically, to include Yi Xia Walk rapid by the present embodiment Bao：

201st, core-network side network element receives the video acceleration request that client is sent, and video acceleration request is that client determines the amount of video cached in play buffer and judges to send when amount of video is less than or equal to the lower limit of buffer threshold.

When client determines the amount of video cached in play buffer and judges that amount of video is less than or equal to the lower limit of buffer threshold, video acceleration request is sent to core-network side network element, accordingly, core-network side network element receives the video acceleration request that client is sent.

Optionally, core-network side network element can pass through the message interface between client, the video acceleration request that direct reception client end is sent after the bandwidth needed for client determines that acceleration is downloaded and to video acceleration request authentication.For example, Internet protocol can be set up between core-network side network element and client（Internet Protocol, IP) message interface, the transmission of video acceleration request, bandwidth information etc. is carried out by IP layer datas bag.

Optionally, core-network side network element can also indirectly receive video acceleration request, if for example, amount of video is less than or equal to the lower limit of buffer threshold, the server for the video that client is being buffered to providing sends video acceleration request.Server is after video acceleration request is received, it is determined that accelerating the bandwidth needed for downloading, acceleration request being authenticated and sent to core-network side network element.Accordingly, core-network side network element receives the acceleration request after authentication according to the server, the information such as bandwidth according to needed for acceleration download, and acceleration download is carried out to the video buffered in play buffer.

202nd, core-network side network element carries out acceleration download to the video buffered in play buffer.

After core-network side network element receives the video acceleration request of client transmission, it is believed that the amount of video very little cached in play buffer, now, core-network side network element provide higher bandwidth etc., with to playing The video buffered in buffering area carries out acceleration download.

Video acceleration method provided in an embodiment of the present invention, core-network side network element receives the video acceleration request that client is sent, video acceleration request is that client determines the amount of video cached in play buffer and judges to send when amount of video is less than or equal to the lower limit of buffer threshold, core-network side network element carries out acceleration download to the video buffered in play buffer, ensure that the play buffer of client stores enough video datas, realize under mobile network environment, reduce client and the purpose of video cardton phenomenon occur.

Fig. 3 is the flow chart of video acceleration method embodiment three of the present invention.The present invention will be described in detail from the realization approach of an entirety for the present embodiment.Specifically, to include Ru Xia Walk rapid by the present embodiment Bao：

301st, the amount of video cached in play buffer is determined.

The amount of video cached in the detection currently playing buffering area of client such as client, wireless access net side network element, i.e., data volume, playable duration of remaining playable video etc..

302nd, judge whether the amount of video cached in play buffer exceedes buffer threshold.

During this Walk is rapid, two thresholdings can be set in buffer threshold, are the lower limit of buffer threshold and the upper limit of buffer threshold respectively, in practicable embodiment, can also set multiple threshold values, the present invention is not limited thereto system.If the amount of video cached in play buffer is less than the lower limit of buffer threshold, Zhi Hang Walk rapid 303;Otherwise, if the amount of video cached in play buffer is higher than the upper limit of buffer threshold, Zhi Hang Walk rapid 304;In addition, if the amount of video cached in play buffer is between the upper limit and lower limit of buffer threshold, Zhi Hang Walk rapid 305.

303rd, the dispatching priority of buffered video in play buffer is improved.

When the amount of video cached in play buffer is less than the lower limit of buffer threshold, illustrate the amount of video very little cached in client terminal playing buffering area, the speed of download of buffered video in the operation for improving dispatching priority, lifting play buffer will now be performed.

304th, in reduction play buffer buffered video dispatching priority.

When the amount of video cached in play buffer is higher than the upper limit of buffer threshold, illustrate the video that abundance has been cached in client terminal playing buffering area, to now perform reduces the operation of dispatching priority, the speed of download of buffered video in reduction play buffer.

305th, maintain the dispatching priority of buffered video in play buffer constant.

When the amount of video cached in play buffer is between the upper limit and lower limit of buffer threshold, illustrate that the amount of video cached reaches one compared with the figure of merit, without to buffered video carries out accelerating download or to avoid the influence to server bandwidth from reducing speed of download in play buffer, that is, maintaining in play buffer The dispatching priority of buffered video is constant.

The present embodiment is to carry out detailed description to the present invention from the thinking of an entirety, but the specific executive agents of Shu Walk rapid 301 305 Shang, depending on the framework and design of product; a little Walk can realized individually by client, core-network side network element, server or wireless access net side network element etc. suddenly, can also be cooperated and realized by client, server, core-network side network element or wireless access net side network element.Below, Jiang Cong Walk rapid 301 305 angle for implementing process, the present invention will be described in detail.

Fig. 4 is the signaling diagram of video acceleration method example IV of the present invention.In the present embodiment, client perceives the amount of video cached in play buffer, and sends video acceleration request or releasing request, then the service quality provided by server calls core-network side network element to server（Quality of Service, QoS) related application programming interfaces（Application Program Interface, API), it is final to be completed to accelerate download or reduction dispatching priority, i.e. client, server and core-network side network element to cooperate to realize video acceleration method provided in an embodiment of the present invention by core-network side network element.Specifically, to include Ru Xia Walk rapid by the present embodiment Bao：

401st, client determines the amount of video cached in play buffer.

Specifically, reference can be made to the Walk of above-mentioned figure 1 rapid 101, here is omitted.

402nd, user end to server sends video acceleration request or releasing request.

During this Walk is rapid, if client judges that the amount of video cached in play buffer is less than the lower limit of buffer threshold, video acceleration request is sent to the server for providing the video；Otherwise, if client judges that the amount of video cached in play buffer exceedes the upper limit of buffer threshold, releasing request is sent to the server for providing the video.

403rd, server is authenticated to video acceleration request or releasing request.

For video acceleration request, server improves in play buffer the dispatching priority of buffered video, calculates and accelerates the information such as bandwidth needed for downloading, the acceleration request is carried out to authenticate and log.In general, accelerate the bandwidth needed for downloading etc. related to the video content definition played, different buffer thresholds can be set to different videos, and the bandwidth needed for accelerating download can be the multiple of video code rate, absolute video code rate etc..Specifically, reference can be made to table 1, table 1 is the mapping table of bandwidth and buffer threshold in video acceleration method example IV of the present invention.

Table 1

Levels of acceleration is without general good excellent buffer threshold upper limit 10S 60S 90S 120S Buffer threshold lower limit 2S 2S 8S 10S

Φ is shown in that " X " that IX 1.1X 1.2X 1.5X refer in table 1, bandwidth represents the multiple of video code rate.By taking levels of acceleration " good " as an example, when the playing duration of buffered video is less than 8S in play buffer, server, which calculates 1.2 times of a width of video code rate of band needed for accelerating, i.e. network side, needs the bandwidth for providing 1.2 times equivalent to video code rate to be used for download acceleration.

It should be noted that during specific commercial operation, except the factor of video code rate, bandwidth etc., also need to consider the demand for experience of business, user's statistics, commercial operation strategy etc., do not enumerate herein.

For releasing request, the dispatching priority of buffered video in server reduction play buffer avoids influence to server bandwidth by reducing the modes such as bandwidth.For example, table 1 is refer to, when levels of acceleration is " general ", if in play buffer the playing duration of buffered video more than 60S, herein, it is possible to reduce for the bandwidth of foradownloaded video, the bandwidth of foradownloaded video is maintained at below 1.1 times of video code rate.

404th, the API related QoS that server calls core-network side network element is provided.

Core-network side can be provided server in API forms to be accelerated to download or reduce the network capabilities in the network element of dispatching priority, such as Huawei's network（Network Enabler) network element, the related API of QoS are provided to server, pass through the API, video acceleration request or releasing request, authentication information, bandwidth information etc. are sent to core-network side network element by server so that core-network side carries out accelerating download or reduction dispatching priority to the video buffered in play buffer.

405th, core-network side network element carries out accelerating download or reduction dispatching priority to the video buffered in play buffer.

Core-network side network element is by changing charging regulation function entity（Policy And Charging Rules Function, PCRF) mode such as strategy carries out accelerating download or reduction dispatching priority to the video buffered in play buffer.

It should be noted that client, server and core-network side network element cooperate during realizing the embodiment of the present invention, the approach of information transmission may also pass through other network elements such as gateway, evolution block core net（Evolved Packet CoreNetwork, EPC), evolved node（ENodeB, eNB) etc..

Fig. 5 is the signaling diagram of video acceleration method embodiment five of the present invention.In the present embodiment, client perceives the amount of video cached in play buffer, and directly invokes the service quality of core-network side network element offer API related QoS, finally is completed to accelerate to download or reduction dispatching priority by core-network side network element.Compared to above-mentioned Fig. 4 embodiments, in the present embodiment, client cooperates to realize video acceleration method provided in an embodiment of the present invention with core-network side network element, and main decision process is not related to server.Specifically, to include Ru Xia Walk rapid by the present embodiment Bao：

501st, client determines the amount of video cached in play buffer.

502nd, client is authenticated to video acceleration request or releasing request.

During this Walk is rapid, if client judges that the amount of video cached in play buffer is less than the lower limit of buffer threshold, calculating accelerates the information such as the bandwidth needed for downloading, and video acceleration request is authenticated；Otherwise, if client judges that the amount of video cached in play buffer exceedes the upper limit of buffer threshold, releasing request is authenticated.

503rd, the API related QoS that client call core-network side network element is provided.

504th, core-network side network element carries out accelerating download or reduction dispatching priority to the video buffered in play buffer.

505th, user end to server, which is sent, accelerates to download or reduce the Operation Log of dispatching priority.

Fig. 6 is the flow chart of video acceleration method embodiment six of the present invention.The present embodiment is that the present invention will be described in detail for the angle of wireless access net side network element, it is adaptable under mobile network, the scene of unstable networks.Specifically, to include Yi Xia Walk rapid by the present embodiment Bao：

601st, wireless access net side network element is according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in play buffer determines the dispatch weight of video buffered in play buffer.

Wireless access net side network element, such as Long Term Evolution（Long Term Evolution, LTE eNB, 3G (Third Generation) Moblie (the 3rd Generation Mobile Communication) in network, controller in 3G) etc., according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in play buffer performs RRM（Radio Resource Management, RRM) algorithm, the dispatch weight of video buffered in play buffer is determined, is finally realized to the air-interface scheduling of the video buffered in play buffer.

602nd, whether wireless access net side network element judges dispatch weight higher than default weight；

In general, the better video of radio link quality, weight is higher；The smaller video of the amount of buffered video in play buffer, weight is higher.During this Walk is rapid, wireless access net side network element is broadcast determining After the dispatch weight for putting the video buffered in buffering area, judge the dispatch weight whether higher than default weight.

If the 603, dispatch weight is higher than default weight, wireless access net side network element carries out air-interface scheduling to the video buffered in play buffer, to carry out acceleration download to the video buffered in play buffer.

During this Walk is rapid, when judging that dispatch weight is higher than default weight, illustrate the amount of video very little cached in play buffer, now client sends video acceleration request to core-network side network element, trigger core-network side network element and higher bandwidth etc. is provided, to carry out acceleration download to the video buffered in play buffer.

Optionally, when judging that dispatch weight is less than default weight, illustrate to have cached sufficient video in play buffer, without having to worry about the video cardton phenomenon caused due to unstable networks.Now, client can also send releasing request with without any processing to core-network side network element, the dispatching priority for the video that triggering core net reduction buffered, and influence to server bandwidth is avoided by reducing the modes such as bandwidth.

Video acceleration method provided in an embodiment of the present invention, wireless access net side network element is according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in play buffer determines the dispatch weight of video buffered in play buffer.When judging that dispatch weight is higher than default weight, video acceleration request is sent to core-network side network element, so that core-network side network element carries out acceleration download to the video buffered in play buffer, ensure that play buffer stores enough video datas, realize under mobile network environment, reduce client and the purpose of video cardton phenomenon occur.

Fig. 7 A are the process schematic of video acceleration method embodiment seven of the present invention.In the present embodiment, wireless access net side network element is specially eNB, from Fig. 7 A, and wireless access net side network element determines that the amount of video cached in play buffer performs RRM algorithms by eNB, realizes the video acceleration method described in the embodiment of the present invention.

Fig. 7 B are the idiographic flow flow chart of RRM algorithms in Fig. 7 A.Referring to Fig. 7 A and figure

It is rapid that 7B, the present embodiment Bao include Ru Xia Walk：

701st, eNB determines the amount of video cached in play buffer.

Specifically, wireless access net side network element is according to the content of the video buffered in the play buffer via core network, extract the information such as average bit rate, the video resolution of transmission of video, with reference to the real-time Transmission speed and transmission time of video, the video data volume that client played is estimated and surplus Remaining amount of video, so that it is determined that the amount of video cached in play buffer.

It should be noted that because the estimation of the amount of video in wireless access net side to having cached can be influenceed by factors such as video playback pending buffer time, the fluctuation situations of video playback code check, the result estimated can have certain deviation.

702nd, eNB obtains the current radio link quality information of client.

It should be noted that the rapid 701 Yu Walk rapid 702 of Shang Shu Walk have no strict sequencing.

703rd, eNB determines the dispatch weight of the video buffered in play buffer.

ENB determines dispatch weight according to current radio link quality information of the amount of video, client that have been cached in play buffer etc..For the angle of radio link quality, radio link quality is better, then weight is higher, and the video of the client good to radio link quality is scheduled, and is favorably improved scheduling rates, efficiency of transmission is lifted on the whole；For the angle of the amount of video cached from play buffer, the amount of video cached is smaller, then weight is higher, the video of the small client of the amount of video that is regarded to having cached accelerate the scheduling of download, avoid interim card present, and the video of the client big to the amount of video that has cached is scheduled the scheduling of priority reduction, the Internet resources of client occupancy are saved while video traffic experience is not reduced.

704th, eNB performs air-interface scheduling.

After dispatch weight is determined, eNB is eating dishes without rice or wine to perform the purpose that corresponding scheduling strategy is downloaded or discharged to reach video to accelerate.

Optionally, if dispatch weight is higher than default weight, wireless access net side network element carries out air-interface scheduling to the video buffered in play buffer, to carry out acceleration download to the video buffered in play buffer.

Optionally, if dispatch weight is less than default weight, wireless access net side network element carries out air-interface scheduling to the video buffered in play buffer, to reduce the dispatching priority of the video buffered.

Compared to above-mentioned Fig. 4 and Fig. 5 embodiments, only need wireless access net side network element to possess the recognition capability of video traffic in the present embodiment, RRM algorithms are improved the present invention can be achieved.

Fig. 8 A are the process schematic of video acceleration method embodiment eight of the present invention.Compared to Fig. 7 A illustrated embodiments, in the present embodiment, the amount of video cached in play buffer is determined by client and sends signaling diagrams of Fig. 8 B for RRM algorithms in Fig. 8 A.Referring to Fig. 8 A and Fig. 8 B, it is rapid that the present embodiment Bao includes Ru Xia Walk： 801st, client determines the amount of video cached in play buffer.

Specifically, can refer to the Walk of figure 1 rapid 101, here is omitted.

802nd, client sends amount of video information to eNB.

Client sends amount of video information by the interface between eNB to eNB, and the amount of video information carries the amount of video cached in play buffer.

803rd, eNB obtains the current radio link quality information of client.

804th, eNB determines the dispatch weight of the video buffered in play buffer.

805th, eNB performs air-interface scheduling.

Fig. 9 is the structural representation of client embodiment one of the present invention.The client that the present embodiment is provided is device embodiment corresponding with Fig. 1 embodiments of the present invention, and the process of implementing will not be repeated here.Specifically, the client 100 that the present embodiment is provided is specifically included：

Determining module 11, for determining the amount of video cached in play buffer；

Judge module 12, for judging whether amount of video that determining module 11 determines is less than or equal to the lower limit of buffer threshold；

Sending module 13, if judging that amount of video is less than or equal to the lower limit of buffer threshold for judge module 12, then client sends video acceleration request to core-network side network element so that core-network side network element carries out acceleration download to the video buffered in play buffer.

Client provided in an embodiment of the present invention, the amount of video cached by perceiving in play buffer, when amount of video is less than or equal to the lower limit of buffer threshold, video acceleration request is sent to core-network side network element, so that core-network side network element carries out acceleration download to the video buffered in play buffer, ensure that play buffer stores enough video datas, realize under mobile network environment, reduce client and the purpose of video cardton phenomenon occur.

Optionally, sending module 13, if judging that amount of video is less than or equal to the lower limit of buffer threshold specifically for judge module 12, the server of the video then buffered to providing sends video acceleration request, accelerate the bandwidth needed for downloading so that server is determined and sent to core-network side network element, and then cause core-network side network element to carry out acceleration download to the video buffered.

Figure 10 is the structural representation of client embodiment two of the present invention.As shown in Figure 10, the client 100 of the present embodiment is on the basis of Fig. 9 apparatus structures, Jin mono- Walk's, in addition to：

Processing module 14, for determining the bandwidth needed for accelerating to download and being authenticated to video acceleration request.Optionally, sending module 13, if being additionally operable to judge module 12 judges that amount of video is more than caching door The upper limit of limit, then send releasing request to core-network side network element so that the dispatching priority for the video that the reduction of core-network side network element is being buffered.

Optionally, sending module 13, if judging that amount of video is more than the upper limit of buffer threshold specifically for judge module 12, then releasing request is sent to the server for providing current video, so that server determines that reducing dispatching priority needs the bandwidth of adjustment and sent to core-network side network element, and then core-network side network element is caused to reduce the dispatching priority of the video buffered.

Optionally, processing module 14, the bandwidth adjusted for determining reduction dispatching priority to need is simultaneously authenticated to releasing request.

Figure 11 is the structural representation of core-network side network element embodiment one of the present invention.The core-network side network element that the present embodiment is provided is device embodiment corresponding with Fig. 2 embodiments of the present invention, and the process of implementing will not be repeated here.Specifically, the core-network side network element 200 that the present embodiment is provided is specifically included：

Receiving module 21, the video acceleration request for receiving client transmission, video acceleration request is that client determines the amount of video cached in play buffer and judges to send when amount of video is less than or equal to the lower limit of buffer threshold；

Processing module 22, for carrying out acceleration download to the video buffered in play buffer.

Core-network side network element provided in an embodiment of the present invention, receive the video acceleration request that client is sent, video acceleration request is that client determines the amount of video cached in play buffer and judges to send when amount of video is less than or equal to the lower limit of buffer threshold, core-network side network element carries out acceleration download to the video buffered in play buffer, ensure that the play buffer of client stores enough video datas, realize under mobile network environment, reduce client and the purpose of video cardton phenomenon occur.

Optionally, receiving module 21, the bandwidth needed for the acceleration download that the video acceleration request of the server transmission specifically for receiving the video that client is being buffered via offer, server are determined and the authentication to video acceleration request；Processing module 22, the bandwidth needed for the acceleration download provided specifically for the server received according to receiving module 21 and the authentication to video acceleration request, acceleration download is carried out to the video buffered in play buffer.

Optionally, processing module 22, the bandwidth needed for being downloaded specifically for the acceleration provided according to client and the authentication to video acceleration request, acceleration download is carried out to the video buffered in play buffer.

Optionally, receiving module 21, are additionally operable to receive the releasing request of the transmission of client, and releasing request is that client determines the amount of video cached in play buffer and judges to send when amount of video is more than the upper limit of buffer threshold；Processing module 22, is additionally operable to reduce the dispatching priority of the video buffered. Optionally, receiving module 21, the reduction dispatching priority that releasing request, the server sent specifically for receiving client via the server for providing the video buffered is determined needs the bandwidth and the authentication to releasing request adjusted；Processing module 22, needs the bandwidth and the authentication to releasing request adjusted specifically for the reduction dispatching priority that the server received according to receiving module 21 is provided, reduces the dispatching priority of the video buffered.

Optionally, processing module 22, need the bandwidth and the authentication to releasing request adjusted specifically for the reduction dispatching priority provided according to client, reduce the dispatching priority of the video buffered.

Figure 12 is the structural representation of wireless access net side network element embodiment one of the present invention.The wireless access net side network element that the present embodiment is provided is device embodiment corresponding with Fig. 6 embodiments of the present invention, and the process of implementing will not be repeated here.Specifically, the wireless access net side network element 300 that the present embodiment is provided is specifically included：Dispatch weight determining module 31, for according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in play buffer determines the dispatch weight of video buffered in play buffer；

Judge module 32, for judging whether the dispatch weight that dispatch weight determining module 31 is determined is higher than default weight；

Air-interface scheduling module 33, if judging that dispatch weight is higher than default weight for judge module 32, air-interface scheduling is carried out to the video buffered in play buffer, to carry out acceleration download to the video buffered in play buffer.

Wireless access net side network element provided in an embodiment of the present invention, according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in play buffer determines the dispatch weight of video buffered in play buffer.When judging that dispatch weight is higher than default weight, video acceleration request is sent to core-network side network element, so that core-network side network element carries out acceleration download to the video buffered in play buffer, ensure that play buffer stores enough video datas, realize under mobile network environment, reduce client and the purpose of video cardton phenomenon occur.

Figure 13 is the structural representation of wireless access net side network element embodiment two of the present invention.As shown in figure 13, the wireless access net side network element 300 of the present embodiment enters a Walk on the basis of Figure 12 apparatus structures, in addition to：

Amount of video determining module 34, for determining the amount of video cached in play buffer；Or, receiving module 35, the amount of video information for receiving client transmission, amount of video information carries the amount of video cached in play buffer. Optionally, air-interface scheduling module 33, if being additionally operable to judge module 32 judges that dispatch weight is less than default weight, carries out air-interface scheduling, to reduce the dispatching priority of the video buffered to the video buffered in play buffer.

Figure 14 is the structural representation of client embodiment three of the present invention.As shown in figure 14, the client 400 that the present embodiment is provided, including：Processor 41 and memory 42.Client 400 can also include transmitter 43, receiver 44.Transmitter 43 can be connected with receiver 44 with processor 41.Wherein, transmitter 43 is used to send data or information, receiver 44 is used to receive data or information, memory 42 stores execute instruction, when client 400 is run, is communicated between processor 41 and memory 42, processor 41 calls the execute instruction in memory 42, for performing embodiment of the method shown in Fig. 1, its implementing principle and technical effect is similar, and here is omitted.

Figure 15 is the structural representation of core-network side network element embodiment two of the present invention.As shown in figure 15, the core-network side network element 500 that the present embodiment is provided, including：Processor 51 and memory 52.Core-network side network element 500 can also include transmitter 53, receiver 54.Transmitter 53 can be connected with receiver 54 with processor 51.Wherein, transmitter 53 is used to send data or information, receiver 54 is used to receive data or information, memory 52 stores execute instruction, when core-network side network element 500 is run, is communicated between processor 51 and memory 52, processor 51 calls the execute instruction in memory 52, for performing embodiment of the method shown in Fig. 2, its implementing principle and technical effect is similar, and here is omitted.

Figure 16 is the structural representation of wireless access net side network element embodiment three of the present invention.As shown in figure 16, the wireless access net side network element 600 that the present embodiment is provided, including：Processor 61 and memory 62.Wireless access net side network element 600 can also include transmitter 63, receiver 64.Transmitter 63 can be connected with receiver 64 with processor 61.Wherein, transmitter 63 is used to send data or information, receiver 64 is used to receive data or information, memory 62 stores execute instruction, when wireless access net side network element 600 is run, is communicated between processor 61 and memory 62, processor 61 calls the execute instruction in memory 62, for performing embodiment of the method shown in Fig. 6, its implementing principle and technical effect is similar, and here is omitted.

One of ordinary skill in the art will appreciate that：Realize that above method embodiment full portions or Bu Fen Walk can be completed by the related hardware of programmed instruction suddenly, foregoing program can be stored in a computer read/write memory medium, upon execution, it is rapid that execution includes above method embodiment Walk to the program；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with Jie of store program codes Matter.

Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part or all technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims

Claims

1st, a kind of video acceleration method, it is characterised in that including：

Client determines the amount of video cached in play buffer；

The client judges whether the amount of video is less than or equal to the lower limit of buffer threshold；

If the amount of video is less than or equal to the lower limit of the buffer threshold, the client sends video acceleration request to core-network side network element so that the core-network side network element carries out acceleration download to the video buffered in the play buffer.

2nd, according to the method described in claim 1, it is characterized in that, if the amount of video is less than or equal to the lower limit of the buffer threshold, then the client sends video acceleration request to core-network side network element, so that the core-network side network element carries out acceleration download to the video buffered in the play buffer, including：

If the amount of video is less than or equal to the lower limit of the buffer threshold, the server of the video then buffered described in the client to offer sends the video acceleration request, accelerate the bandwidth needed for downloading so that the server is determined and sent to the core-network side network element, and then cause the core-network side network element to carry out acceleration download to the video buffered.

3rd, according to the method described in claim 1, it is characterized in that, the client judges whether the amount of video is less than or equal to after the lower limit of buffer threshold, if the amount of video is less than or equal to the lower limit of the buffer threshold, then the client sends video acceleration request to core-network side network element, so that before the core-network side network element carries out acceleration download to the video that is being buffered in the play buffer, in addition to：

The client determines to accelerate the bandwidth needed for downloading and the video acceleration request is authenticated.

4th, the method according to any one of claim 13, it is characterised in that also include：If the amount of video is more than the upper limit of the buffer threshold, the client sends releasing request to core-network side network element so that the dispatching priority of the video buffered described in the core-network side network element reduction.

5th, method according to claim 4, it is characterized in that, if the amount of video is more than the upper limit of the buffer threshold, then the client sends releasing request to core-network side network element, so that the dispatching priority of the video buffered described in the core-network side network element reduction, including：

If the amount of video is more than the upper limit of the buffer threshold, the client sends releasing request to the server for providing the current video, so that the server determines that the reduction dispatching priority needs The bandwidth of adjustment is simultaneously sent to the core-network side network element, and then causes the dispatching priority of video buffered described in the core-network side network element reduction.

6th, method according to claim 4, it is characterized in that, if the amount of video is more than the upper limit of the buffer threshold, then the client sends releasing request to core-network side network element, so that before the dispatching priority of the video buffered described in the core-network side network element reduction, in addition to：

The client determines that the reduction dispatching priority needs the bandwidth of adjustment and the releasing request is authenticated.

7th, a kind of video acceleration method, it is characterised in that including：

Core-network side network element receives the video acceleration request that client is sent, and the video acceleration request is that the client determines the amount of video cached in play buffer and judges to send when the amount of video is less than or equal to the lower limit of buffer threshold；

The core-network side network element carries out acceleration download to the video buffered in the play buffer.

8th, method according to claim 7, it is characterised in that

The core-network side network element receives the video acceleration request that client is sent, including：

The core-network side network element, which receives the video acceleration request that the client sends via the server for providing the video buffered, the server is determined accelerates the bandwidth needed for download and the authentication to the video acceleration request；

The core-network side network element carries out acceleration download to the video buffered in the play buffer, including：

Bandwidth of the core-network side network element according to needed for the acceleration download that the server is provided and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

9th, method according to claim 7, it is characterised in that the core-network side network element carries out acceleration download to the video buffered in the play buffer, including：

Bandwidth of the core-network side network element according to needed for the acceleration download that the client is provided and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

10th, the method according to any one of claim 79, it is characterised in that also include：The core-network side network element receives the releasing request of the transmission of the client, and the releasing request is that the client determines the amount of video cached in the play buffer and judges to send when the amount of video is more than the upper limit of the buffer threshold；

The dispatching priority of the video buffered described in the core-network side network element reduction. 11st, method according to claim 10, it is characterised in that the core-network side network element receives the releasing request of the transmission of the client, including：

The core-network side network element receives the client reduces bandwidth and the authentication to the releasing request that the dispatching priority needs to adjust via what the releasing request, the server of the server transmission of the video buffered described in offer were determined；

The dispatching priority of the video buffered described in the core-network side network element reduction, including：The reduction dispatching priority that the core-network side network element is provided according to the server needs the bandwidth and the authentication to the releasing request adjusted, the dispatching priority of the video buffered described in reduction.

12nd, method according to claim 10, it is characterised in that the core-network side network element receives the releasing request of the transmission of the client, including：

The reduction dispatching priority that the core-network side network element is provided according to the client needs the bandwidth and the authentication to the releasing request adjusted, the dispatching priority of the video buffered described in reduction.

13rd, a kind of video acceleration method, it is characterised in that including：

Wireless access net side network element according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in the play buffer determines the dispatch weight of video buffered in the play buffer；

Whether the wireless access net side network element judges the dispatch weight higher than default weight；

If the dispatch weight is higher than default weight, the wireless access net side network element carries out air-interface scheduling to the video buffered in the play buffer, to carry out acceleration download to the video buffered in the play buffer.

14th, method according to claim 13, it is characterized in that, the wireless access net side network element is according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in the play buffer, before determining the dispatch weight of video that is being buffered in the play buffer, in addition to：

The wireless access net side network element determines the amount of video cached in the play buffer；Or, the wireless access net side network element receives the amount of video information that client is sent, and the amount of video information carries the amount of video cached in the play buffer.

15th, the method according to claim 13 or 14, it is characterised in that also include：If the dispatch weight is less than default weight, the wireless access net side network element carries out air-interface scheduling to the video buffered in the play buffer, excellent with the scheduling for reducing the video buffered First level.

16th, a kind of client, it is characterised in that including：

Determining module, for determining the amount of video cached in play buffer；

Judge module, for judging whether the amount of video that the determining module determines is less than or equal to the lower limit of buffer threshold；

Sending module, if judging that the amount of video is less than or equal to the lower limit of the buffer threshold for the judge module, then the client sends video acceleration request to core-network side network element so that the core-network side network element carries out acceleration download to the video buffered in the play buffer.

17th, client according to claim 16, it is characterised in that

The sending module, if judging that the amount of video is less than or equal to the lower limit of the buffer threshold specifically for the judge module, then the video acceleration request is sent to the server of the video buffered described in offer, accelerate the bandwidth needed for downloading so that the server is determined and sent to the core-network side network element, and then cause the core-network side network element to carry out acceleration download to the video buffered.

18th, client according to claim 16, it is characterised in that the client also includes：Processing module, for determining the bandwidth needed for accelerating to download and being authenticated to the video acceleration request.

19th, the client according to any one of claim 16 18, it is characterised in that

The sending module, if being additionally operable to the judge module judges that the amount of video is more than the upper limit of the buffer threshold, then releasing request is sent to core-network side network element so that the dispatching priority of the video buffered described in the core-network side network element reduction.

20th, client according to claim 19, it is characterised in that

The sending module, if judging that the amount of video is more than the upper limit of the buffer threshold specifically for the judge module, then releasing request is sent to the server for providing the current video, so that the server determines that the reduction dispatching priority needs the bandwidth of adjustment and sent to the core-network side network element, and then cause the dispatching priority of video buffered described in the core-network side network element reduction.

21st, client according to claim 19, it is characterised in that the client also includes：Processing module, the bandwidth adjusted for determining the reduction dispatching priority to need is simultaneously authenticated to the releasing request.

22nd, a kind of core-network side network element, it is characterised in that including：

Receiving module, for receive client transmission video acceleration request, the video acceleration request be the client determine the amount of video cached in play buffer and judge the amount of video be less than or Equal to buffer threshold lower limit when send；

Processing module, for carrying out acceleration download to the video buffered in the play buffer.

23rd, core-network side network element according to claim 22, it is characterised in that

The receiving module, the bandwidth needed for the acceleration download that the video acceleration request sent specifically for the reception client via the server of the video buffered described in offer, the server are determined and the authentication to the video acceleration request；

The processing module, the bandwidth needed for the acceleration download provided specifically for the server received according to the receiving module and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

24th, core-network side network element according to claim 22, it is characterised in that

The processing module, the bandwidth needed for being downloaded specifically for the acceleration provided according to the client and the authentication to the video acceleration request, acceleration download is carried out to the video buffered in the play buffer.

25th, the core-network side network element according to any one of claim 22 24, it is characterized in that, the receiving module, it is additionally operable to receive the releasing request of the transmission of the client, the releasing request is that the client determines the amount of video cached in the play buffer and judges to send when the amount of video is more than the upper limit of the buffer threshold；

The processing module, is additionally operable to the dispatching priority of video buffered described in reduction.

26th, core-network side network element according to claim 25, it is characterised in that

The receiving module, the reduction dispatching priority that the releasing request, the server sent specifically for receiving the client via the server of the video buffered described in offer is determined needs the bandwidth and the authentication to the releasing request adjusted；

The processing module, the bandwidth and the authentication to the releasing request adjusted is needed specifically for the reduction dispatching priority that the server received according to the receiving module is provided, the dispatching priority of the video buffered described in reduction.

27th, core-network side network element according to claim 25, it is characterised in that

The processing module, specifically for bandwidth and the authentication to the releasing request that the dispatching priority needs are adjusted that reduce provided according to the client, the dispatching priority of the video buffered described in reduction.

28th, a kind of wireless access net side network element, it is characterised in that including： Dispatch weight determining module, for according to the amount of video cached in play buffer, and/or, the radio link quality information of the video buffered in the play buffer determines the dispatch weight of video buffered in the play buffer；

Judge module, for judging whether the dispatch weight that the dispatch weight determining module is determined is higher than default weight；

Air-interface scheduling module, if judging that the dispatch weight is higher than default weight for the judge module, air-interface scheduling is carried out to the video buffered in the play buffer, to carry out acceleration download to the video buffered in the play buffer.

29th, wireless access net side network element according to claim 28, it is characterised in that the wireless access net side network element, in addition to：

Amount of video determining module, for the amount of video for determining to have cached in the play buffer；Or, receiving module, the amount of video information for receiving client transmission, the amount of video information carries the amount of video cached in the play buffer.

30th, the wireless access net side network element according to claim 28 or 29, it is characterized in that, the air-interface scheduling module, if being additionally operable to the judge module judges that the dispatch weight is less than default weight, air-interface scheduling then is carried out to the video buffered in the play buffer, to reduce the dispatching priority of the video buffered.

31st, a kind of client, it is characterised in that including：Processor and memory, the memory storage execute instruction, when the client is run, communicated between the processor and the memory, execute instruction described in the computing device causes method of the client executing as described in any one of claim 16.

32nd, a kind of core-network side network element, it is characterised in that including：Processor and memory, the memory storage execute instruction, when the core-network side network element is run, communicated between the processor and the memory, execute instruction described in the computing device causes the core-network side network element to perform the method as described in any one of claim 7 12.

33rd, a kind of wireless access net side network element, it is characterised in that including：Processor and memory, the memory storage execute instruction, when the wireless access net side network element is run, communicated between the processor and the memory, execute instruction described in the computing device causes the wireless access net side network element to perform the method as described in any one of claim 13 15.