CN105376176B - Ensure the methods, devices and systems of mobile Internet video traffic service quality - Google Patents

Ensure the methods, devices and systems of mobile Internet video traffic service quality Download PDF

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Publication number
CN105376176B
CN105376176B CN201410412658.3A CN201410412658A CN105376176B CN 105376176 B CN105376176 B CN 105376176B CN 201410412658 A CN201410412658 A CN 201410412658A CN 105376176 B CN105376176 B CN 105376176B
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China
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bandwidth
video
request
service quality
buffer
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CN201410412658.3A
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Chinese (zh)
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CN105376176A (en
Inventor
何震苇
陆钢
林奕琳
龙显军
杨新章
尹梅
张琳峰
区洪辉
胡文胜
王庆杨
黎明雪
何宇锋
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中国电信股份有限公司
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Abstract

The present invention discloses a kind of methods, devices and systems for ensureing mobile Internet video traffic service quality.Wherein video terminal sends service quality guarantee request to network side equipment, so that network side equipment is according to bandwidth demand and buffer area residual buffer time, bandwidth can be ensured accordingly by providing when detecting screen buffer variation;When receive network side equipment offer when ensureing bandwidth, will can ensure that bandwidth is compared with the network bandwidth currently detected, therefrom select lesser bandwidth using as dispatch resource information;Video download request is sent to video source server, includes wherein the scheduling resource information in video download request, so that video source server provides corresponding video segment;The video segment that video source server is provided is stored into screen buffer.Internet resources by being adjusted video traffic using the buffer area residual buffer time are distributed, and the Internet resources distribution reasonability of mobile Internet video traffic can be effectively improved.

Description

Ensure the methods, devices and systems of mobile Internet video traffic service quality

Technical field

The present invention relates to the communications field, in particular to a kind of method for ensureing mobile Internet video traffic service quality, Device and system.

Background technique

Mobile Internet video traffic is the business of network quality sensitivity, generallys use self-adaption code rate technology to ensure not With the fluency of video playing under network quality environment, terminal is according to the network quality selection code rate and network quality perceived The video segment matched plays, however the network quality frequently changed allows video terminal to be difficult to accurately select code rate, and works as network When quality is lower than the network bandwidth requirement of lowest bit rate, the fluency of most basic video not can guarantee yet.

Currently, can be the enough wireless network resource blocks of video flowing distribution by strategy control unit, video flowing institute be ensured The bandwidth resources needed, however the Internet resources allocation strategy of " arrive first and first obtain, distribute according to need " is used not consider internet view The influence of frequency variable bit rate and video buffer time to bandwidth demand, video bandwidth distribution is not reasonable, and the video that can be ensured is whole Hold number less.

Summary of the invention

The embodiment of the present invention provides a kind of methods, devices and systems for ensureing mobile Internet video traffic service quality. It is distributed by the Internet resources that the buffer area residual buffer time using video terminal adjusts video traffic, to be effectively improved shifting The Internet resources of dynamic internet video business distribute reasonability, and video end is maximumlly met under the constraint of limited bandwidth resources The service quality guarantee demand at end.

According to an aspect of the present invention, a kind of method ensureing mobile Internet video traffic service quality, packet are provided It includes:

When detecting screen buffer variation, service quality guarantee request is sent to network side equipment, wherein Service Quality Amount ensures that request includes video session five-tuple information, bandwidth demand, average bit rate and buffer area residual buffer time;So as to net For network side apparatus according to bandwidth demand and buffer area residual buffer time, bandwidth can be ensured accordingly by providing;

When receiving when ensureing bandwidth of network side equipment offer, bandwidth will can be ensured and the network bandwidth that currently detects Be compared, therefrom select lesser bandwidth using as scheduling resource information;

Video download request is sent to video source server, includes wherein that the scheduling resource is believed in video download request Breath, so that video source server provides corresponding video segment, the code rate of video segment is corresponding with the scheduling resource information;

The video segment that video source server is provided is stored into screen buffer.

In one embodiment, video flowing is read from screen buffer to play out.

In one embodiment, if screen buffer variation is that screen buffer completes initialization, buffer area residue is slow Rushing the time is 0.

In one embodiment, the bandwidth demand includes maximum bandwidth demand and minimum bandwidth requirement.

According to another aspect of the present invention, a kind of method ensureing mobile Internet video traffic service quality, packet are provided It includes:

When receive video terminal transmission service quality guarantee request when, extract service quality guarantee request in include Video session five-tuple information, bandwidth demand, average bit rate and buffer area residual buffer time;Wherein video terminal is detecting It is requested to the service quality guarantee is sent when screen buffer variation;

According to bandwidth demand and buffer area residual buffer time, determination can ensure bandwidth accordingly;

Ensure that bandwidth is supplied to corresponding video terminal for what is obtained, so that video terminal can ensure bandwidth and current The network bandwidth of detection is compared, and therefrom selects lesser bandwidth to take as scheduling resource information, and then from video source Business device obtains corresponding video segment, and wherein the code rate of video segment is corresponding with the scheduling resource information.

In one embodiment, when receiving the service quality guarantee request of video terminal transmission, Service Quality is extracted Amount ensures that the step of bandwidth demand for including in request, buffer area residual buffer time includes:

When receiving the service quality guarantee request of video terminal transmission, service quality guarantee request is verified;

When being verified, when extracting the bandwidth demand for including in service quality guarantee request, buffer area residual buffer Between.

In one embodiment, according to bandwidth demand and buffer area residual buffer time, determination can ensure bandwidth accordingly The step of include:

According to buffer area residual buffer time T, service quality guarantee request is added to corresponding bandwidth safeguard point In group Gj;Wherein service quality guarantee request is grouped according to the buffer area residual buffer time, is divided into k group, each Group is assigned corresponding bandwidth weighting W, wherein a length of when the buffering of Gi group [(i-1) * s, i*s) second, 1≤i < k, Gk group A length of when buffering [(k-1) * s, ∞) second, W1 >=W2 >=... >=Wk;

The current bandwidth demand R that the service quality guarantee is requested is updated using the result of R*Wj, Wj is described It is grouped the bandwidth weighting of Gj;

Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR), wherein TB is the total bandwidth of mobile network, and Rr is the current bandwidth demand of r-th of request, and SR is the whole being currently included The sum of current bandwidth demand of request, 1≤r≤R, R are the whole number of requests being currently included.

In one embodiment, at every predetermined time, the residual buffer time all requested being currently included is updated, In for r-th request, using Tr+Ar*m/Sr result to r-th request residual buffer time Tr be updated, Ar is R-th of request ensures bandwidth, and m is scheduled time interval, and Sr is the average bit rate of r-th of request, and 1≤r≤R, R are to work as The preceding whole number of requests for including;

According to the updated residual buffer time, each request is assigned in corresponding bandwidth safeguard grouping;

The current bandwidth demand of each request is updated, wherein being requested for r-th, r-th is requested using the result of Rr*Wr Current bandwidth demand Rr be updated, Wr is to request to be currently located the bandwidth weighting of grouping for r-th;

Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR);

By each request it is current ensure that bandwidth is supplied to corresponding user terminal.

According to another aspect of the present invention, it is whole to provide a kind of video for ensureing mobile Internet video traffic service quality End, including detection unit, first interface unit, bandwidth detection unit, scheduling resource determination unit, second interface unit and video Buffer location, in which:

Detection unit, for detecting whether screen buffer changes;

First interface unit, for sending and taking to network side equipment when detection unit detects screen buffer variation Be engaged in quality assurance request, wherein service quality guarantee request include video session five-tuple information, bandwidth demand, average bit rate and The buffer area residual buffer time;So that network side equipment is according to bandwidth demand and buffer area residual buffer time, provide corresponding It can ensure bandwidth;

Bandwidth detection unit, for detecting current network bandwidth;

Dispatch resource determination unit, for when first interface unit receive network side equipment offer ensure bandwidth When, it will can ensure that bandwidth is compared with the network bandwidth currently detected, therefrom select lesser bandwidth to provide as scheduling Source information;

Second interface unit wherein wraps in video download request for sending video download request to video source server The scheduling resource information is included, so that video source server provides corresponding video segment, the code rate of video segment and the tune It is corresponding to spend resource information;

Screen buffer unit, the video segment provided by video source server for receiving second interface unit It stores in screen buffer.

In one embodiment, video terminal further includes video playback unit, in which:

Video playback unit, for reading video flowing from screen buffer to play out.

In one embodiment, if screen buffer variation is that screen buffer completes initialization, buffer area residue is slow Rushing the time is 0.

In one embodiment, the bandwidth demand includes maximum bandwidth demand and minimum bandwidth requirement.

According to another aspect of the present invention, the network side for providing a kind of guarantee mobile Internet video traffic service quality is set It is standby, including intelligent pipeline ability engine SPE unit and strategy control unit, in which:

SPE unit, in the service quality guarantee request for receiving video terminal transmission, service quality guarantee to be asked It asks and is transmitted to strategy control unit, wherein video terminal sends the service quality guarantee when detecting screen buffer variation Request;Ensure that bandwidth is transmitted to video terminal for what strategy control unit provided, so as to video terminal can ensure bandwidth with The network bandwidth currently detected is compared, and therefrom selects lesser bandwidth using as scheduling resource information, and then from video Source server obtains corresponding video segment, and wherein the code rate of video segment is corresponding with the scheduling resource information;

Strategy control unit, for extracting Service Quality in the service quality guarantee request for receiving the transmission of SPE unit Amount ensures video session five-tuple information, bandwidth demand, average bit rate and the buffer area residual buffer time for including in request;Root According to bandwidth demand and buffer area residual buffer time, determination can ensure bandwidth accordingly, it is mono- can to ensure that bandwidth is supplied to SPE Member.

In one embodiment, SPE unit specifically receive video terminal transmission service quality guarantee request when, it is right Service quality guarantee request is verified, and when being verified, service quality guarantee request is transmitted to strategy control unit.

In one embodiment, strategy control unit is with specific reference to buffer area residual buffer time T, by the service quality Ensure that request is added in corresponding bandwidth safeguard grouping Gj;Wherein according to the buffer area residual buffer time by service quality guarantee Request is grouped, and is divided into k group, and each group is assigned corresponding bandwidth weighting W, wherein a length of when the buffering of Gi group [(i-1) * s, i*s) second, 1≤i<k, when buffering of Gk group it is a length of [(k-1) * s, ∞) second, W1>=W2>=...>=Wk;Utilize R* The result of Wj is updated the current bandwidth demand R that the service quality guarantee is requested, and Wj is the bandwidth power of the grouping Gj Weight;Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR), Wherein TB is the total bandwidth of mobile network, and Rr is r-th of current bandwidth demand of request, and SR is all requesting of being currently included The sum of current bandwidth demand, 1≤r≤R, R are the whole number of requests being currently included.

In one embodiment, strategy control unit is also used to update the whole being currently included at every predetermined time and asks The residual buffer time asked, wherein being requested for r-th, the residual buffer requested using the result of Tr+Ar*m/Sr r-th Time, Tr was updated, and Ar is the bandwidth that ensures of r-th of request, and m is scheduled time interval, and Sr is the flat of r-th of request Equal code rate, 1≤r≤R, R are the whole number of requests being currently included;According to the updated residual buffer time, by each request point It is fitted in corresponding bandwidth safeguard grouping;The current bandwidth demand of each request is updated, wherein requesting for r-th, utilizes Rr*Wr Result to r-th request current bandwidth demand Rr be updated, Wr be r-th request be currently located grouping bandwidth power Weight;Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR); By each request it is current ensure that bandwidth is supplied to corresponding user terminal.

According to another aspect of the present invention, a kind of system ensureing mobile Internet video traffic service quality, packet are provided Include video terminal, network side equipment and video source server, in which:

Video terminal, the video terminal being related to for any of the above-described embodiment;

Network side equipment, the network side equipment being related to for any of the above-described embodiment;

Video source server, for being asked using video download in the video download request for receiving video terminal transmission The scheduling resource information for including in asking selects corresponding video segment, wherein the code rate of video segment and the scheduling resource information It is corresponding, and the video segment is supplied to video terminal.

The present invention is distributed by the Internet resources that the buffer area residual buffer time using video terminal adjusts video traffic, It is maximum under the constraint of limited bandwidth resources to be effectively improved the Internet resources distribution reasonability of mobile Internet video traffic The service quality guarantee demand for meeting video terminal changed.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.

Fig. 1 is the schematic diagram of method one embodiment that the present invention ensures mobile Internet video traffic service quality.

Fig. 2 is the schematic diagram for another embodiment of method that the present invention ensures mobile Internet video traffic service quality.

Fig. 3 is the schematic diagram of video terminal one embodiment of the present invention.

Fig. 4 is the schematic diagram of another embodiment of video terminal of the present invention.

Fig. 5 is the schematic diagram of inventive network side apparatus one embodiment.

Fig. 6 is the schematic diagram of system one embodiment that the present invention ensures mobile Internet video traffic service quality.

Fig. 7 is the signal of information exchange one embodiment that the present invention ensures mobile Internet video traffic service quality Figure.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, shall fall within the protection scope of the present invention.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments It is not limited the scope of the invention up to formula and numerical value.

Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality Proportionate relationship draw.

Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as authorizing part of specification.

It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.

Fig. 1 is the schematic diagram of method one embodiment that the present invention ensures mobile Internet video traffic service quality.It is excellent Choosing, the method and step of the present embodiment can be executed by video terminal.

Step 101, when detecting screen buffer variation, service quality guarantee request is sent to network side equipment.

Wherein service quality guarantee request includes video session five-tuple information, bandwidth demand, average bit rate and buffer area The residual buffer time;So that network side equipment is according to bandwidth demand and buffer area residual buffer time, providing can ensure accordingly Bandwidth.Wherein, buffer time shorter more Internet resources of video flowing distribution, buffer time, longer video flowing distribution was less Internet resources.

Wherein, video session five-tuple information includes terminal IP, terminal prot, media server IP, media server end Mouth, communication protocol (TCP/IP).

Step 102, when receiving when ensureing bandwidth of network side equipment offer, it will can ensure bandwidth and currently detect Network bandwidth is compared, therefrom select lesser bandwidth using as scheduling resource information.

Step 103, video download request is sent to video source server, includes wherein the scheduling in video download request Resource information, so that video source server provides corresponding video segment, the code rate of video segment and the scheduling resource information It is corresponding.

Step 104, video segment video source server provided is stored into screen buffer.

Video flowing can be read from screen buffer as a result, to play out.

It should be noted that the screen buffer used here is the buffer area of fixed duration, this and traditional fixed size Buffer area be different.Fixed duration buffer area is to cushion space size needed for code rate video clips of different sizes Different.

The calculating (including KB/MB) usually as unit of byte of the buffer area of traditional fixed size, such as 10MB's are slow The video of 10MB can be buffered by rushing area, and for different code rates, the cache-time of an equal amount of buffer area is different, Such as the average bit rate that h.264 720P encodes is 4.5mbps, the buffer area longest of 10MB can cache 10MB*8/4.5=18 Second, and the maximum duration of an equal amount of buffer area buffering 1080P (9mbps) just only has 10*8/9=9 seconds.

In general, the buffer area of fixed duration should meet the following conditions:

1) buffer time=k, k are constant, generally 10-60 seconds;

2) minimum code rate * maximum cushioning duration≤buffer size≤maximal rate * maximum cushioning duration;

3) buffering 1 size of segment+2 size of buffering segment+...+buffering segment N size≤maximum buffer size, N are The buffering segment sum for including in buffer area;

4) 1/ code rate 1+ of buffer time=buffering segment caches 2/ code rate 2+...+ of punch fragment and caches punch fragment N/ code rate N.

Method based on the guarantee mobile Internet video traffic service quality that the above embodiment of the present invention provides, passes through benefit It is distributed with the Internet resources of the remaining buffer time adjustment video traffic in the buffer area of video terminal, to be effectively improved mobile mutual The Internet resources of networked video business distribute reasonability, maximumlly meet video terminal under the constraint of limited bandwidth resources Service quality guarantee demand.

For example, the screen buffer of video terminal can be divided into several sections by buffer time, section by etc. durations or The durations setting such as not, for example, the durations such as 5 seconds buffering section can be set as section 1 [0 second, 5 seconds), section 2 [5 seconds, 10 seconds), Section 3 [10 seconds, 15 seconds).The purpose of this segmentation is to control the frequency that video terminal initiates QoS request, and by stages is every more The frequency that big QoS is called is lower, otherwise QoS calls frequency higher.

Video buffer event is defined as follows:

1) buffer area initialization event: initialization is completed in buffer area, can start foradownloaded video.

2) buffering section moves up event: remaining time pointer enters biggish buffering section from lesser buffering section.

3) caching section moves down event: remaining time pointer enters lesser buffering section from biggish buffering section.

Screen buffer location triggered video buffer event according to pointed by remaining time pointer, video terminal are responsible for connecing Receive and handle video buffer event.

When receiving buffer area initialization event, QoS is sent to network side equipment and ensures request, required parameter includes view Frequency traffic identifier, residual buffer time, maximum bandwidth demand, minimum bandwidth requirement, wherein maximum, minimum bandwidth is respectively by currently broadcasting Maximum, the minimum code rate decision of video are put, the residual buffer time is 0.

When receiving video buffer section and moving up or move down event, QoS is sent to network side equipment and ensures request, request Parameter includes video traffic identifier, residual buffer time, maximum bandwidth demand, minimum bandwidth requirement, and the residual buffer time is current Remaining buffer time.

Fig. 2 is the schematic diagram for another embodiment of method that the present invention ensures mobile Internet video traffic service quality.It is excellent Choosing, the method and step of the present embodiment can be executed by network side equipment.

Step 201, it when receiving the service quality guarantee request of video terminal transmission, extracts service quality guarantee and asks Video session five-tuple information, bandwidth demand, average bit rate and the buffer area residual buffer time for including in asking.

Wherein video terminal sends the service quality guarantee request when detecting screen buffer variation.

Preferably, when receiving the service quality guarantee request of video terminal transmission, service quality guarantee can be requested It is verified.When being verified, when extracting the bandwidth demand for including in service quality guarantee request, buffer area residual buffer Between.

Step 202, according to bandwidth demand and buffer area residual buffer time, determination can ensure bandwidth accordingly.

Wherein, buffer time shorter more Internet resources of video flowing distribution, buffer time longer video flowing distribution Less Internet resources.

Step 203, ensure that bandwidth is supplied to corresponding video terminal for what is obtained, so that video terminal can ensure band Width be compared with the network bandwidth currently detected, therefrom select lesser bandwidth using as dispatch resource information, Jin Ercong Video source server obtains corresponding video segment, and wherein the code rate of video segment is corresponding with the scheduling resource information.

Method based on the guarantee mobile Internet video traffic service quality that the above embodiment of the present invention provides, passes through benefit It is distributed with the Internet resources of the buffer area residual buffer time adjustment video traffic of video terminal, to be effectively improved mobile interchange The Internet resources of net video traffic distribute reasonability, and the clothes of video terminal are maximumlly met under the constraint of limited bandwidth resources Business quality assurance demand.

In one embodiment, above-mentioned according to bandwidth demand and buffer area residual buffer time, determination can ensure accordingly The step of bandwidth can include:

According to buffer area residual buffer time T, service quality guarantee request is added to corresponding bandwidth safeguard point In group Gj.

Wherein service quality guarantee request is grouped according to the buffer area residual buffer time, is divided into k group, each Group is assigned corresponding bandwidth weighting W, wherein a length of when the buffering of Gi group [(i-1) * s, i*s) second, 1≤i < k, Gk group A length of when buffering [(k-1) * s, ∞) second, W1 >=W2 >=... >=Wk.

The current bandwidth demand R that the service quality guarantee is requested is updated using the result of R*Wj, Wj is described It is grouped the bandwidth weighting of Gj.

Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR), wherein TB is the total bandwidth of mobile network, and Rr is the current bandwidth demand of r-th of request, and SR is the whole being currently included The sum of current bandwidth demand of request, 1≤r≤R, R are the whole number of requests being currently included.

In addition, at every predetermined time, the residual buffer time all requested being currently included is updated, wherein for r A request is updated using the residual buffer time Tr that the result of Tr+Ar*m/Sr requests r-th, and Ar is r-th of request Ensure bandwidth, m is scheduled time interval, and Sr is the average bit rate of r-th of request, and 1≤r≤R, R are currently included Whole number of requests.

According to the updated residual buffer time, each request is assigned in corresponding bandwidth safeguard grouping.

The current bandwidth demand of each request is updated, wherein being requested for r-th, r-th is requested using the result of Rr*Wr Current bandwidth demand Rr be updated, Wr is to request to be currently located the bandwidth weighting of grouping for r-th.

Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR), wherein TB is the total bandwidth of mobile network, and Rr is the current bandwidth demand of r-th of request, and SR is the whole being currently included The sum of current bandwidth demand of request.

By each request it is current ensure that bandwidth is supplied to corresponding user terminal.

For example, bandwidth can once be ensured by recalculating every m seconds, by updating the residual buffer time of each request, to each Request re-starts distribution, and in being adjusted to be grouped accordingly, and then the bandwidth for updating each request needs, so that it is determined that new can Ensure bandwidth.Thus it can ensure that bandwidth is updated to each request.

In one embodiment, it is assumed that the total bandwidth TB of base station is 10mb, residual time length divided 3 groups, G1 by 5 seconds for interval [0,5), G2 [5,10), and G3 [10, ∞), each group corresponding weight W1=4, W2=2, W3=1.

Video bandwidth request is as follows:

Request 1: minimum bandwidth 1mb, maximum bandwidth 4.5mb, average bit rate 3mb, remaining time 13 seconds;

Request 2: minimum bandwidth 1mb, maximum bandwidth 4.5mb, average bit rate 3mb, remaining time 2 seconds;

Request 3: minimum bandwidth 1mb, maximum bandwidth 4.5mb, average bit rate 3mb, remaining time 6 seconds;

Request 4: minimum bandwidth 1mb, maximum bandwidth 4.5mb, average bit rate 3mb, remaining time 8 seconds.

Enable bandwidth request Ri for maximum bandwidth request, i.e. R1=R2=R3=R4=4.5 then will be above-mentioned according to remaining time 4 requests are grouped: G1 (request 2), G2 (request 3, request 4), G3 (request 1).

Bandwidth request is updated, then can be obtained:

R1=R1*W3=4.5*1=4.5

R2=R2*W1=4.5*4=18

R3=R3*W2=4.5*2=9

R4=R4*R2=4.5*2=9

To which total bandwidth requests SR=4.5+18+9+9=40.5.

Then each request can ensure bandwidth accordingly are as follows:

A1=TB*R1/SR=10*4.5/40.5=1.11

A2=TB*R2/SR=10*18/40.5=4.44

A3=TB*R3/SR=10*9/40.5=2.22

A4=TB*R4/SR=10*9/40.5=2.22

Fig. 3 is the schematic diagram of video terminal one embodiment of the present invention.As shown in figure 3, video terminal may include that detection is single Member 301, first interface unit 302, bandwidth detection unit 303, scheduling resource determination unit 304, second interface unit 305 and view Frequency buffer location 306.Wherein:

Detection unit 301, for detecting whether screen buffer changes.

First interface unit 302, for when detection unit 301 detect screen buffer variation when, to network side equipment Send service quality guarantee request, wherein service quality guarantee request include video session five-tuple information, it is bandwidth demand, average Code rate and buffer area residual buffer time;So that network side equipment is according to bandwidth demand and buffer area residual buffer time, provide Bandwidth can be ensured accordingly.

Preferably, bandwidth demand includes maximum bandwidth demand and minimum bandwidth requirement.

Preferably, if screen buffer variation is that screen buffer completes initialization, the buffer area residual buffer time is 0。

Bandwidth detection unit 303, for detecting current network bandwidth.

Resource determination unit 304 is dispatched, for receiving ensureing for network side equipment offer when first interface unit 302 It when bandwidth, will can ensure that bandwidth is compared with the network bandwidth currently detected, therefrom select lesser bandwidth using as tune Spend resource information.

Second interface unit 305, for sending video download request to video source server, wherein in video download request Including the scheduling resource information, so that video source server provides corresponding video segment, the code rate of video segment with it is described It is corresponding to dispatch resource information.

Screen buffer unit 306, the view provided by video source server for receiving second interface unit 305 Frequency slice storage is into screen buffer.

Based on the video terminal that the above embodiment of the present invention provides, by adjusting video using the buffer area residual buffer time The Internet resources of business distribute, so that the Internet resources distribution reasonability of mobile Internet video traffic is effectively improved, limited Bandwidth resources constraint under maximumlly meet the service quality guarantee demand of video terminal.

Fig. 4 is the schematic diagram of another embodiment of video terminal of the present invention.Compared with embodiment illustrated in fig. 3, reality shown in Fig. 4 It applies in example, video terminal further includes video playback unit 401.Wherein:

Video playback unit 401, for reading video flowing from screen buffer to play out.

Fig. 5 is the schematic diagram of inventive network side apparatus one embodiment.As shown in figure 5, network side equipment may include SPE (Smart Pipe Engine, intelligent pipeline ability engine) unit 501 and strategy control unit 502.Wherein:

SPE unit 501, in the service quality guarantee request for receiving video terminal transmission, service quality to be protected Barrier request is transmitted to strategy control unit 502, and wherein video terminal sends the service when detecting screen buffer variation Quality assurance request;Ensure that bandwidth is transmitted to video terminal for what strategy control unit 502 provided, so that video terminal can Ensure bandwidth be compared with the network bandwidth currently detected, therefrom select lesser bandwidth using as dispatch resource information, And then corresponding video segment is obtained from video source server, wherein the code rate of video segment is opposite with the scheduling resource information It answers.

Strategy control unit 502, for extracting in the service quality guarantee request for receiving the transmission of SPE unit 501 Video session five-tuple information, bandwidth demand, average bit rate and the buffer area residual buffer for including in service quality guarantee request Time;According to bandwidth demand and buffer area residual buffer time, determination can ensure bandwidth accordingly, can ensure that bandwidth is supplied to SPE unit 501.

Based on the network side equipment that the above embodiment of the present invention provides, by utilizing buffer area residual buffer time adjustment view The Internet resources of frequency business distribute, to be effectively improved the Internet resources distribution reasonability of mobile Internet video traffic, are having Maximumlly meet the service quality guarantee demand of video terminal under the bandwidth resources constraint of limit.

Ensure that (Application Programming Interface, is answered API by the QoS provided using SPE unit With routine interface), it can be convenient for such as PCRF (Policy and Charging Rules Function, strategy and charging regulation Function) strategy control unit carry out Internet resources distribution.

Preferably, SPE unit 501 specifically receive video terminal transmission service quality guarantee request when, to service Quality assurance request is verified, and when being verified, service quality guarantee request is transmitted to strategy control unit 502.

In one embodiment, strategy control unit 502 is with specific reference to buffer area residual buffer time T, by the service Quality assurance request is added in corresponding bandwidth safeguard grouping Gj;Wherein according to the buffer area residual buffer time by service quality It ensures that request is grouped, is divided into k group, each group is assigned corresponding bandwidth weighting W, wherein the buffering duration of Gi group For [(i-1) * s, i*s) second, 1≤i<k, when buffering of Gk group it is a length of [(k-1) * s, ∞) second, W1>=W2>=...>=Wk;It utilizes The result of R*Wj is updated the current bandwidth demand R that the service quality guarantee is requested, and Wj is the bandwidth of the grouping Gj Weight;Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR), wherein TB is the total bandwidth of mobile network, and Rr is the current bandwidth demand of r-th of request, and SR is the whole being currently included The sum of current bandwidth demand of request, 1≤r≤R, R are the whole number of requests being currently included.

Preferably, strategy control unit 502 is also used at every predetermined time, update the surplus of all requesting of being currently included Remaining buffer time, wherein being requested for r-th, the residual buffer time Tr requested using the result of Tr+Ar*m/Sr r-th It being updated, Ar is the bandwidth that ensures of r-th of request, and m is scheduled time interval, and Sr is the average bit rate of r-th of request, 1≤r≤R, R are the whole number of requests being currently included;According to the updated residual buffer time, each request is assigned to corresponding Bandwidth safeguard grouping in;The current bandwidth demand of each request is updated, wherein requesting for r-th, utilizes the result pair of Rr*Wr The current bandwidth demand Rr of r-th of request is updated, and Wr is r-th of bandwidth weighting for requesting to be currently located grouping;It calculates complete Portion's request it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR);Each request is worked as Preceding ensures that bandwidth is supplied to corresponding user terminal.

Fig. 6 is the schematic diagram of system one embodiment that the present invention ensures mobile Internet video traffic service quality.It should System may include video terminal 601, network side equipment 602 and video source server 603.Wherein:

Video terminal 601, the video terminal being related to for any one of any embodiment in Fig. 3 or Fig. 4.

Network side equipment 602, the network side equipment being related to for any embodiment in Fig. 5.

Video source server 603, for utilizing video in the video download request for receiving the transmission of video terminal 601 The scheduling resource information for including in downloading request selects corresponding video segment, and wherein the code rate of video segment and the scheduling provide Source information is corresponding, and the video segment is supplied to video terminal.

System based on the guarantee mobile Internet video traffic service quality that the above embodiment of the present invention provides, passes through benefit It is distributed with the Internet resources of buffer area residual buffer time adjustment video traffic, to be effectively improved mobile Internet video traffic Internet resources distribute reasonability, maximumlly meet the service quality guarantee of video terminal under the constraint of limited bandwidth resources Demand.

Below by specific example, the present invention will be described, as shown in Figure 7:

Step 701, whether video terminal detection screen buffer changes.

Step 702, when detecting screen buffer variation, video terminal sends service quality guarantee to SPE unit and asks It asks.Wherein service quality guarantee request includes that video session five-tuple information, bandwidth demand, average bit rate and buffer area residue are slow Rush the time.

Step 703, SPE unit verifies service quality guarantee request.

Step 704, when the authentication succeeds, service quality guarantee request is sent to PCRF unit by SPE unit.

Step 705, PCRF unit accordingly may be used according to bandwidth demand and buffer area residual buffer time for video flowing distribution Ensure bandwidth.

Wherein, buffer time shorter more Internet resources of video flowing distribution, buffer time longer video flowing distribution Less Internet resources.

Step 706, PCRF unit can ensure that bandwidth is supplied to SPE unit.

Step 707, SPE unit can ensure that bandwidth is supplied to video terminal.

Step 708, video terminal is receiving when ensureing bandwidth of network side equipment offer, can ensure bandwidth and work as The network bandwidth of preceding detection is compared, therefrom select lesser bandwidth using as scheduling resource information.

Step 709, video terminal sends video download request to video source server, wherein includes in video download request The scheduling resource information.

Step 710, video source server provides corresponding video segment to video terminal, the code rate of video segment with it is described It is corresponding to dispatch resource information.

Step 711, the video segment that video terminal provides video source server is stored into screen buffer.

Step 712, video terminal reads video flowing from screen buffer to play out.

By applying the present invention, more mobile bandwidth money can be distributed for residual buffer time shorter video session Source is distributed less mobile bandwidth resources for residual buffer time longer video session and is subtracted to accelerate video download speed Few video buffering latency, saves bandwidth resources expense, provides safeguard resource for more video terminals.Video terminal simultaneously The video codes that the effective bandwidth fed back by mobile network side more acurrate, can be selected more timely and actual bandwidth matches Rate, to promote video viewing experience.

Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..

Description of the invention is given for the purpose of illustration and description, and is not exhaustively or will be of the invention It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those skilled in the art is enable to manage The solution present invention is to design various embodiments suitable for specific applications with various modifications.

Claims (11)

1. a kind of method for ensureing mobile Internet video traffic service quality characterized by comprising
When detecting screen buffer variation, service quality guarantee request is sent to network side equipment, wherein screen buffer It is fixed duration buffer area, service quality guarantee request is gentle including video session five-tuple information, bandwidth demand, average bit rate It rushes area's residual buffer time, the bandwidth demand includes maximum bandwidth demand and minimum bandwidth requirement, is changed in screen buffer In the case where the initialization of buffer area, the maximum bandwidth and minimum bandwidth for including in service quality guarantee request are respectively by currently broadcasting The maximal rate and minimum code rate for putting video determine that the residual buffer time is 0;Screen buffer variation be buffer area move up or In the case where moving down, the residual buffer time is the buffer time of current residual, so that network side equipment is gentle according to bandwidth demand Area's residual buffer time is rushed, bandwidth can be ensured accordingly by providing;
When receiving when ensureing bandwidth of network side equipment offer, it will can ensure that bandwidth is carried out with the network bandwidth currently detected Compare, therefrom select lesser bandwidth using as scheduling resource information;
Video download request is sent to video source server, includes wherein the scheduling resource information in video download request, with Just video source server provides corresponding video segment, and the code rate of video segment is corresponding with the scheduling resource information;
The video segment that video source server is provided is stored into screen buffer.
2. the method according to claim 1, wherein further include:
Video flowing is read from screen buffer to play out.
3. a kind of method for ensureing mobile Internet video traffic service quality characterized by comprising
When receiving the service quality guarantee request of video terminal transmission, the view for including in service quality guarantee request is extracted Frequency session five-tuple information, bandwidth demand, average bit rate and buffer area residual buffer time;Wherein video terminal is detecting view Frequency buffer area sends the service quality guarantee request when changing;
According to bandwidth demand and buffer area residual buffer time, determination can ensure bandwidth accordingly, wherein shorter for buffer time The more Internet resources of video flowing distribution, be the less Internet resources of buffer time longer video flowing distribution;
Ensure that bandwidth is supplied to corresponding video terminal for what is obtained, so that video terminal can ensure bandwidth and current detection Network bandwidth be compared, therefrom select lesser bandwidth using as scheduling resource information, and then from video source server Corresponding video segment is obtained, wherein the code rate of video segment is corresponding with the scheduling resource information;
Wherein, according to bandwidth demand and buffer area residual buffer time, determining can ensure accordingly includes: the step of bandwidth
According to buffer area residual buffer time T, service quality guarantee request is added to corresponding bandwidth safeguard and is grouped Gj In;Wherein service quality guarantee request is grouped according to the buffer area residual buffer time, is divided into k group, each component Equipped with corresponding bandwidth weighting W, wherein a length of when the buffering of Gi group [(i-1) * s, i*s) second, 1≤i < k, s are duration parameters, A length of when the buffering of Gk group [(k-1) * s, ∞) second, W1 >=W2 >=... >=Wk;
The current bandwidth demand R that the service quality guarantee is requested is updated using the result of R*Wj, Wj is the grouping The bandwidth weighting of Gj;
Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR), Wherein TB is the total bandwidth of mobile network, and Rr is r-th of current bandwidth demand of request, and SR is all requesting of being currently included The sum of current bandwidth demand, 1≤r≤R, R are the whole number of requests being currently included.
4. according to the method described in claim 3, it is characterized in that,
When receiving the service quality guarantee request of video terminal transmission, the band for including in service quality guarantee request is extracted The step of wide demand, buffer area residual buffer time includes:
When receiving the service quality guarantee request of video terminal transmission, service quality guarantee request is verified;
When being verified, the bandwidth demand for including in service quality guarantee request, buffer area residual buffer time are extracted.
5. according to the method described in claim 3, it is characterized by further comprising:
At every predetermined time, the residual buffer time all requested being currently included is updated, wherein requesting for r-th, benefit It is updated with the residual buffer time Tr that the result of Tr+Ar*m/Sr requests r-th, Ar ensures band for r-th of request Width, m are scheduled time interval, and Sr is the average bit rate of r-th of request;
According to the updated residual buffer time, each request is assigned in corresponding bandwidth safeguard grouping;
The current bandwidth demand all requested is updated, wherein being requested for r-th, r-th is requested using the result of Rr*Wr Current bandwidth demand Rr is updated, and Wr is r-th of bandwidth weighting for requesting to be currently located grouping;
Calculate all requests it is current ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR);
By each request it is current ensure that bandwidth is supplied to corresponding user terminal.
6. a kind of video terminal for ensureing mobile Internet video traffic service quality, which is characterized in that including detection unit, the One interface unit, bandwidth detection unit, scheduling resource determination unit, second interface unit and screen buffer unit, in which:
Detection unit, for detecting whether screen buffer changes, wherein screen buffer is fixed duration buffer area;
First interface unit, for sending Service Quality to network side equipment when detection unit detects screen buffer variation Amount ensures request, and wherein service quality guarantee request includes video session five-tuple information, bandwidth demand, average bit rate and buffering Area's residual buffer time, the bandwidth demand include maximum bandwidth demand and minimum bandwidth requirement, are in screen buffer variation In the case that buffer area initializes, the maximum bandwidth and minimum bandwidth for including in service quality guarantee request are respectively by currently playing The maximal rate and minimum code rate of video determine that the residual buffer time is 0;Screen buffer variation be buffer area move up or under In the case where shifting, the residual buffer time is the buffer time of current residual, so that network side equipment is according to bandwidth demand and buffering Area's residual buffer time, bandwidth can be ensured accordingly by providing;
Bandwidth detection unit, for detecting current network bandwidth;
Dispatch resource determination unit, for when first interface unit receive network side equipment offer when ensureing bandwidth, will It can ensure that bandwidth is compared with the network bandwidth currently detected, therefrom select lesser bandwidth to believe as scheduling resource Breath;
Second interface unit includes wherein institute in video download request for sending video download request to video source server Scheduling resource information is stated, so that video source server provides corresponding video segment, the code rate of video segment and the scheduling are provided Source information is corresponding;
Screen buffer unit, the video segment storage provided by video source server for receiving second interface unit Into screen buffer.
7. video terminal according to claim 6, which is characterized in that further include video playback unit, in which:
Video playback unit, for reading video flowing from screen buffer to play out.
8. a kind of network side equipment for ensureing mobile Internet video traffic service quality, which is characterized in that including intelligent pipeline Ability engine SPE unit and strategy control unit, in which:
SPE unit, in the service quality guarantee request for receiving video terminal transmission, service quality guarantee request to be turned Strategy control unit is issued, wherein video terminal sends the service quality guarantee when detecting screen buffer variation and asks It asks;Ensure that bandwidth is transmitted to video terminal for what strategy control unit provided, so that video terminal can ensure bandwidth and work as The network bandwidth of preceding detection is compared, and therefrom selects lesser bandwidth using as scheduling resource information, and then from video source Server obtains corresponding video segment, and wherein the code rate of video segment is corresponding with the scheduling resource information;
Strategy control unit, for extracting service quality guarantor in the service quality guarantee request for receiving the transmission of SPE unit Video session five-tuple information, bandwidth demand, average bit rate and the buffer area residual buffer time for including in barrier request;According to band Wide demand and buffer area residual buffer time, determination can ensure bandwidth accordingly, wherein the video flow point shorter for buffer time With more Internet resources, it is the less Internet resources of buffer time longer video flowing distribution, can ensures that bandwidth is supplied to SPE unit;Wherein according to buffer area residual buffer time T, service quality guarantee request is added to corresponding bandwidth and is protected In barrier grouping Gj;Wherein service quality guarantee request is grouped according to the buffer area residual buffer time, is divided into k group, Each group is assigned corresponding bandwidth weighting W, wherein a length of when the buffering of Gi group [(i-1) * s, i*s) second, 1≤i < k, s are Duration parameters, when buffering of Gk group it is a length of [(k-1) * s, ∞) second, W1 >=W2 >=... >=Wk;Using the result of R*Wj to described The current bandwidth demand R of service quality guarantee request is updated, and Wj is the bandwidth weighting of the grouping Gj;Calculate all requests Current ensures bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR), wherein TB is mobile network Total bandwidth, Rr is r-th of current bandwidth demand of request, SR be the current bandwidth demand all requested that is currently included it With 1≤r≤R, R are the whole number of requests being currently included.
9. network side equipment according to claim 8, which is characterized in that
SPE unit specifically receive video terminal transmission service quality guarantee request when, to service quality guarantee request into Service quality guarantee request is transmitted to strategy control unit when being verified by row verifying.
10. network side equipment according to claim 8, which is characterized in that
Strategy control unit is also used to update the residual buffer time all requested being currently included at every predetermined time, In for r-th request, using Tr+Ar*m/Sr result to r-th request residual buffer time Tr be updated, Ar is R-th of request ensures bandwidth, and m is scheduled time interval, and Sr is the average bit rate of r-th of request, and 1≤r≤R, R are to work as The preceding whole number of requests for including;According to the updated residual buffer time, each request is assigned to corresponding bandwidth safeguard point In group;The current bandwidth demand of each request is updated, wherein being requested for r-th, r-th is requested using the result of Rr*Wr Current bandwidth demand Rr is updated, and Wr is r-th of bandwidth weighting for requesting to be currently located grouping;It calculates and all requests currently Can ensure bandwidth, wherein r-th of request it is current ensure bandwidth Ar=TB*Rr/ (SR);By each request it is current ensure band Width is supplied to corresponding user terminal.
11. a kind of system for ensureing mobile Internet video traffic service quality, which is characterized in that including video terminal, network Side apparatus and video source server, in which:
Video terminal, the video terminal being related to for any one of claim 6-7;
Network side equipment, the network side equipment being related to for any one of claim 8-10;
Video source server, used in being requested using video download in the video download request for receiving video terminal transmission Including scheduling resource information select corresponding video segment, wherein the code rate of video segment is opposite with the scheduling resource information It answers, and the video segment is supplied to video terminal.
CN201410412658.3A 2014-08-21 2014-08-21 Ensure the methods, devices and systems of mobile Internet video traffic service quality CN105376176B (en)

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