CN109660819A - Service buffer method, apparatus and serving BS based on mobile edge calculations - Google Patents
Service buffer method, apparatus and serving BS based on mobile edge calculations Download PDFInfo
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- CN109660819A CN109660819A CN201710933773.9A CN201710933773A CN109660819A CN 109660819 A CN109660819 A CN 109660819A CN 201710933773 A CN201710933773 A CN 201710933773A CN 109660819 A CN109660819 A CN 109660819A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The specific embodiment of the invention provides a kind of service buffer method, apparatus and serving BS based on mobile edge calculations, this method comprises: the first video traffic request that a serving BS is sent is received, wherein first video traffic request is used for the playing resource of one target video of request；The preparatory caching playing resource of the target video is sent to the serving BS；Wherein the preparatory caching playing resource is the part playing resource of the target video, and the stock number of the preparatory caching playing resource is determined according to the service feature of the target video.This method passes through the part playing resource of caching of target video, the part playing resource cached can be only sent to the serving BS of user by the initial buffer stage when user watches target video, can under the premise of not increasing MEC load and cost, reduce user watch video when the initial buffer stage round-trip delay.
Description
Technical field
The present invention relates to wireless technical fields, refer in particular to a kind of based on the service buffer method, the dress that move edge calculations
It sets and serving BS.
Background technique
Under the prior art, it is then played at the terminal from Video service base station (such as Tencent, iqiyi.com) foradownloaded video
As the demand of a large number of users, however since video initial buffer rate will be much higher than video playing rate, it may be possible to its 2 times
(such as 720P), the minimum speed limit provided needed for network should be video buffer rate, thus for the network coverage and capacity have compared with
High request.If there is a large number of users watches video simultaneously, it will so that the initial buffer time delay of user is elongated, under user experience
Drop.
Currently, mobile edge calculations (Mobile Edge Computing, abbreviation MEC) is applied in video playing.
Mobile edge content and computing technique are that information technology service environment and cloud computing energy are provided on the position close to mobile subscriber
Power, and content distribution is pushed to close to user side (such as base station), so as to preferably support long term evolution (Long Term
Evolution, abbreviation LTE) business need of low time delay and high bandwidth in network.Using above-mentioned business feature, MEC can be by video
On the locally stored serving BS in source, user is directly distributed to when user's program request, it is former that such user will not need connection video
Beginning serving BS (such as Tencent, iqiyi.com), so that high degree shortens round-trip delay (Round-Trip Time, abbreviation
RTT), user's viewing experience is improved.
It in the prior art, can be big in MEC local cache in order to guarantee that all users can watch the video of institute's program request in time
The complete video resource of amount, however use the video genre of which caching very limited, if to guarantee all user institutes point
The video broadcast has been cached on MEC, then the load of MEC is higher, and cost is very for hardware (such as serving BS, hard disk)
Height influences the advantage of MEC sinking.
Summary of the invention
The purpose of technical solution of the present invention is to provide a kind of service buffer method, apparatus and clothes based on mobile edge calculations
It is engaged in base station, to reduce past in the initial buffer stage when user watches video under the premise of not increasing MEC load and cost
Return time delay.
The specific embodiment of the invention provides a kind of service buffer method based on mobile edge calculations, wherein includes:
The first video traffic request of serving BS transmission is received, wherein first video traffic request is for requesting
Obtain the playing resource of a target video；
The preparatory caching playing resource of the target video is sent to the serving BS；Wherein the preparatory caching is broadcast
The part playing resource that resource is the target video is put, the stock number of the preparatory caching playing resource is according to the target
The service feature of video determines.
Preferably, the service buffer method based on mobile edge calculations, wherein the method also includes:
According to the service feature of the target video, the preparatory cache resources amount of the target video is determined；
According to the preparatory cache resources amount, the playing resource of the target video is cached, is obtained described preparatory
Cache playing resource.
Preferably, the service buffer method based on mobile edge calculations, wherein described according to the target video
Service feature, the step of determining the preparatory cache resources amount of the target video includes:
Extract the parameter information of multiple default characteristic parameters in the service feature of the target video；
According to default weighted value corresponding with the parameter information of each default characteristic parameter, the target video is calculated
Ratio can be cached；
According to preset total buffer memory and it is described cache ratio, determine the preparatory cache resources amount.
Preferably, the service buffer method based on mobile edge calculations, wherein the basis it is default with it is each pre-
If the corresponding weighted value of the parameter information of characteristic parameter, calculate the target video the step of caching ratio in:
Table is corresponded to according to default weight information, determines weighted value corresponding with the parameter information of each default characteristic parameter；
Wherein each default characteristic parameter respectively corresponds a default weight information and corresponds to table, and the default weight information corresponds in table, no
Same parameter information corresponds to different weighted values.
Preferably, the service buffer method based on mobile edge calculations, wherein the default characteristic parameter includes
Type of business, business use Heat range and/or business size.
Preferably, the service buffer method based on mobile edge calculations, wherein the method also includes:
Interval preset time corresponds to table to the default weight information and is updated.
Preferably, the service buffer method based on mobile edge calculations, wherein the method also includes:
The time point information finished when the preparatory caching playing resource is played is sent to the serving BS.
Preferably, the service buffer method based on mobile edge calculations, wherein the method also includes:
The request of the second video traffic is sent to the provisioning server of the target video, the second video traffic request is used
In the requesting terminal requested for first video traffic, except described preparatory in the playing resource of target video described in request
Cache other playing resources outside playing resource.
The specific embodiment of the invention also provides another service buffer method based on mobile edge calculations, wherein includes:
The request of the first video traffic is sent to mobile edge calculations MEC serving BS, wherein first video traffic is asked
Seek the playing resource for one target video of request；
The preparatory caching playing resource for the target video that the MEC serving BS is sent is received, wherein described preparatory
The part playing resource that playing resource is the target video is cached, the stock number of the preparatory caching playing resource is according to institute
The service feature for stating target video determines.
Preferably, the service buffer method based on mobile edge calculations, wherein the method also includes:
Receive the solicited message that requesting terminal is sent；
When in the solicited message including video request identifier, then according to the solicited message, Xiang Suoshu MEC service
Base station sends the first video traffic request.
Preferably, the service buffer method based on mobile edge calculations, wherein described to receive the MEC service
After the step of preparatory caching playing resource for the target video that base station is sent, the method also includes:
The preparatory caching playing resource is forwarded to the requesting terminal.
Preferably, the service buffer method based on mobile edge calculations, wherein receive the MEC clothes described
After the preparatory caching playing resource for the target video that business base station is sent, the method also includes:
The request of the second video traffic is sent to the provisioning server of the target video, the second video traffic request is used
In the requesting terminal requested for first video traffic, except described preparatory in the playing resource of target video described in request
Cache other playing resources outside playing resource.
Preferably, the service buffer method based on mobile edge calculations, wherein described to the target video
Before provisioning server sends the request of the second video traffic, the method also includes:
Receive the time point letter finished when the preparatory caching playing resource that the MEC serving BS is sent plays
Breath；
According to the time point information, determine that second video traffic requests the broadcasting of other requested playing resources
Starting point, wherein including the broadcasting starting point in second video traffic request.
Preferably, the service buffer method based on mobile edge calculations, wherein described to the target video
Before provisioning server sends the request of the second video traffic, the method also includes:
According to the received preparatory caching playing resource of institute, the playing duration of the preparatory caching playing resource is calculated；
According to the playing duration, determine that second video traffic requests the broadcasting of other requested playing resources to rise
Initial point, wherein including the broadcasting starting point in second video traffic request.
The specific embodiment of the invention also provides a kind of mobile edge calculations MEC serving BS, wherein includes:
First transceiver, for receiving the first video traffic request of serving BS transmission, wherein first video
Service request is used for the playing resource of one target video of request；
Second transceiver, for the preparatory caching playing resource of the target video to be sent to the serving BS；Its
Described in cache in advance playing resource be the target video part playing resource, it is described it is preparatory caching playing resource resource
Amount is determined according to the service feature of the target video.
Preferably, the mobile edge calculations MEC serving BS, wherein the MEC serving BS further include:
First processor determines the preparatory caching of the target video for the service feature according to the target video
Stock number；
Second processor, for delaying to the playing resource of the target video according to the preparatory cache resources amount
It deposits, obtains the preparatory caching playing resource.
Preferably, the mobile edge calculations MEC serving BS, wherein the first processor specifically includes:
First sub-processor, the parameter letter of multiple default characteristic parameters in the service feature for extracting the target video
Breath；
Second sub-processor presets weighted value corresponding with the parameter information of each default characteristic parameter for basis,
Calculate the target video caches ratio；
Third sub-processor, for according to preset total buffer memory and it is described cache ratio, determine that the preparatory caching provides
Source amount.
Preferably, the mobile edge calculations MEC serving BS, wherein second sub-processor is specifically used for: root
Table is corresponded to according to default weight information, determines weighted value corresponding with the parameter information of each default characteristic parameter；It is wherein each pre-
If characteristic parameter respectively corresponds a default weight information and corresponds to table, the default weight information is corresponded in table, different parameters information
Corresponding different weighted values.
Preferably, the mobile edge calculations MEC serving BS, wherein the default characteristic parameter includes business kind
Class, business use Heat range and/or business size.
Preferably, the mobile edge calculations MEC serving BS, wherein the MEC serving BS further include:
Third processor corresponds to table to the default weight information for being spaced preset time and is updated.
Preferably, the mobile edge calculations MEC serving BS, wherein the MEC serving BS further include:
Third transceiver, the time point information finished when for playing the preparatory caching playing resource are sent to
The serving BS.
Preferably, the mobile edge calculations MEC serving BS, wherein the MEC serving BS further include:
4th transceiver, for sending the request of the second video traffic to the provisioning server of the target video, described the
The request of two video traffics is used for the requesting terminal for first video traffic request, the broadcasting of target video described in request
Other playing resources in resource in addition to the preparatory caching playing resource.
The specific embodiment of the invention also provides a kind of serving BS, wherein includes:
First transceiver, for sending the request of the first video traffic to mobile edge calculations MEC serving BS, wherein described
The request of first video traffic is used for the playing resource of one target video of request；
Second transceiver, the preparatory caching for receiving the target video that the MEC serving BS is sent play money
Source, wherein the preparatory caching playing resource is the part playing resource of the target video, the preparatory caching playing resource
Stock number be according to the service feature of the target video determine.
Preferably, the serving BS, wherein the first transceiver is also used to:
Receive the solicited message that requesting terminal is sent；
When in the solicited message including video request identifier, then according to the solicited message, Xiang Suoshu MEC service
Base station sends the first video traffic request.
Preferably, the preparatory caching serving BS, wherein the second transceiver is also used to: is played into money
Source is forwarded to the requesting terminal.
Preferably, the serving BS, wherein the serving BS further include:
Third transceiver, for sending the request of the second video traffic to the provisioning server of the target video, described the
The request of two video traffics is used for the requesting terminal for first video traffic request, the broadcasting of target video described in request
Other playing resources in resource in addition to the preparatory caching playing resource.
Preferably, the serving BS, wherein the serving BS further include:
4th transceiver is broadcast for receiving when the preparatory caching playing resource that the MEC serving BS is sent plays
Discharge complete time point information；
First processor, for according to the time point information, determine the second video traffic request it is requested its
The broadcasting starting point of his playing resource, wherein including the broadcasting starting point in second video traffic request.
Preferably, the serving BS, wherein the serving BS further include:
Second processor, for calculating the preparatory caching and playing according to the received preparatory caching playing resource of institute
The playing duration of resource；
Third processor, for according to the playing duration, determine the second video traffic request it is requested other
The broadcasting starting point of playing resource, wherein including the broadcasting starting point in second video traffic request.
The specific embodiment of the invention also provides a kind of communication equipment, including memory, processor and is stored in the storage
On device and the computer program that can run on the processor；Wherein, it is realized when the processor executes described program as above
Described in any item service buffer methods based on mobile edge calculations.
The specific embodiment of the invention provides a kind of computer readable storage medium, is stored thereon with computer program, wherein
The step in as above described in any item service buffer methods based on mobile edge calculations is realized when the program is executed by processor
Suddenly.
One or more embodiments of the invention at least has the advantages that
Using service buffer method described in the specific embodiment of the invention, by the part playing resource of caching of target video,
The part playing resource cached can be only sent to the clothes of user by the initial buffer stage when user watches target video
It is engaged in base station, other being downloaded by the provisioning server of target video in the stabilization sub stage that user watches target video and play money
Source is not increasing MEC load and cost so as to shorten the RRT duration between initial buffer phase user and MEC serving BS
Under the premise of, reduce user watch video when the initial buffer stage round-trip delay.
Detailed description of the invention
Fig. 1 is the process signal of the service buffer method based on mobile edge calculations MEC described in the specific embodiment of the invention
Figure；
Fig. 2 is to obtain the process of caching playing resource in advance using service buffer method described in the specific embodiment of the invention；
Fig. 3 is the specific flow chart of step S210 in Fig. 2；
Fig. 4 is to carry out the one of which of target video downloading using service buffer method described in the specific embodiment of the invention
The flow diagram of mode；
Fig. 5 is to carry out the another kind side of target video downloading using service buffer method described in the specific embodiment of the invention
The flow diagram of formula；
Fig. 6 is the flow diagram of another embodiment of service buffer method described in the specific embodiment of the invention；
Fig. 7 is the structural schematic diagram of MEC serving BS described in the specific embodiment of the invention；
Fig. 8 is the structural schematic diagram of serving BS described in the specific embodiment of the invention.
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 some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Service buffer method based on mobile edge calculations MEC described in the specific embodiment of the invention, services base for MEC
It stands, by the part playing resource of caching of target video, the initial buffer stage in this way when user watches target video can be with
The part playing resource cached is only sent to the serving BS of user, it can be in the stabilization sub stage that user watches target video
Other playing resources are downloaded by the provisioning server of target video, service base so as to shorten initial buffer phase user and MEC
RRT duration between standing reduces when user watches video under the premise of not increasing MEC load and cost in initial buffer rank
The round-trip delay of section.
The process of service buffer method based on mobile edge calculations MEC described in the specific embodiment of the invention as shown in Figure 1
Schematic diagram, in the specific embodiment of the invention, the service buffer method based on MEC includes:
S110 receives the first video traffic request that a serving BS is sent, wherein first video traffic request is used
In the playing resource of one target video of request；
The preparatory caching playing resource of the target video is sent to the serving BS by S120；It is wherein described preparatory
The part playing resource that playing resource is the target video is cached, the stock number of the preparatory caching playing resource is according to institute
The service feature for stating target video determines.
Specifically, in step S110, the request of the first video traffic is that serving BS receives user to the video of target video
After service request, generated transmitted by the request of the video traffic according to transmitted by user.
In addition, using service buffer method described in the specific embodiment of the invention, preferably, being cached in advance in step S120
The stock number of playing resource is determined according to the service feature of target video, so that the target video of different service types exists
Caching has the broadcasting video of different size stock number on MEC serving BS, reaches the optimization benefit of resource on MEC serving BS
With.
Therefore, using service buffer method described in the specific embodiment of the invention, preferably, needing to predefine each target view
The preparatory cache resources amount of frequency caches each target video according to identified preparatory cache resources amount, obtains each
The preparatory caching playing resource of target video.Therefore as shown in Fig. 2, the step of obtaining caching playing resource in advance specifically includes:
S210 determines the preparatory cache resources amount of the target video according to the service feature of the target video；
S220 caches the playing resource of the target video, described in acquisition according to the preparatory cache resources amount
Caching playing resource in advance.
Specifically, in service buffer method described in the specific embodiment of the invention, as shown in figure 3, the step S210 is specific
Include:
S211 extracts the parameter information of multiple default characteristic parameters in the service feature of the target video；
S212 calculates the target according to default weighted value corresponding with the parameter information of each default characteristic parameter
Video caches ratio；
S213, according to preset total buffer memory and it is described cache ratio, determine the preparatory cache resources amount.
In addition, corresponding to table according to default weight information, the determining parameter with each default characteristic parameter is believed in step S212
Cease corresponding weighted value；Wherein each default characteristic parameter respectively corresponds a default weight information and corresponds to table, the default weight
Information corresponds in table, and different parameters information corresponds to different weighted values.
Preferably, the default characteristic parameter of the service feature of target video may include type of business, business using temperature
Grade and/or business size.
For example, can be carried out when default characteristic parameter includes type of business for the video of different business type
Priority rank sets weighted value according to the order of priority rank from high to low, establishes default weight information and corresponds to table, wherein
Default weight information corresponds to the higher type of business of priority rank in table, and corresponding weighted value is higher.For example, the business of being based on
The default weight information table that type is established can be the form of following table one.
Table 1:
| Ranking | Weight | |
| Type one | 1 | N1/N1 |
| Type two | 2 | (N1-1)/N1 |
| …… | …… | …… |
| Type N1 | N1 | 1/N1 |
In addition, the priority rank of different business type specifically can according to different business type video flow accounting,
Request number of times and/or number of users etc. determine, wherein flow accounting is higher, the request number of times much more business with number of users, excellent
First grade is higher.
Equally, when default characteristic parameter includes that business uses Heat range, the video of different business can be based on
Carry out priority rank using temperature, for example, each subservice based on different business flow accounting, each subservice request time
Number accountings and each subservice number of users accounting, carry out Heat range ranking, flow accounting is higher, request number of times accounting is higher and
The higher business of number of users accounting, the priority rank of Heat range are higher.In addition, according further to priority rank by height to
Low order sets weighted value, establishes default weight information and corresponds to table, wherein default weight information corresponds to priority rank in table
The higher namely business type of business higher using Heat range, corresponding weighted value are higher.It is specifically based on business and uses heat
The form that the corresponding default weight information established of degree grade corresponds to table can be refering to shown in table 1, no longer enumerated here.
It, can be based on needing completely to cache for the video of different business when default characteristic parameter includes business size
Stock number carries out priority rank, such as the stock number for needing completely to cache is divided into multiple grades range, comprising: is greater than
10G, 1 to 10G, 500M to 1G, 200M to 500M, 1M-200M, 500K-1M, 200K-500K, 1K-200K etc., each grade model
The grade of a corresponding priority, and order of each grade according to corresponding stock number from high to low are enclosed, is corresponded to from high to low
The stock number for needing completely to cache corresponding to the video of sequence namely different business is higher, and priority level is higher.In addition,
In above-mentioned sortord, can also further according to each subservice minimum resources buffer memory of different business and each subservice most
High caching resource amount, further synthesis determines the grade of priority level.It on this basis, can be according further to different business
Priority rank order from high to low set weighted value, establish default weight information and correspond to table, wherein presetting weight information
The type of business that priority rank is higher in corresponding table namely required business size is higher, corresponding weighted value are higher.Specifically
The form that default weight information based on foundation corresponding to business size corresponds to table can be refering to shown in table 1, no longer enumerated here.
The business of target video is extracted by step S211 using service buffer method described in the specific embodiment of the invention
The parameter information of multiple default characteristic parameters in feature, namely the species name of extraction type of business, business use Heat range
Grade point and business size specific value；By step S212, respectively according to default weight letter corresponding with type of business
It ceases corresponding table and business uses the corresponding default corresponding table of weight information of Heat range and default weight corresponding with business size
Information corresponds to table, determines the weighted value of each default characteristic parameter, according to the weighted value of each default characteristic parameter, calculates target
Video caches ratio.
For example, when default characteristic parameter includes type of business, business uses Heat range and business size, specifically
The formula for caching ratio that ground calculates target video can be with are as follows:
X=α × catalog_weight+ β × heat_weight+ γ × size_weight
Wherein, X be calculate obtain cache ratio；Catalog_weight is that the type of business of target video is corresponding
Weighted value；Heat_weight is that the business of target video uses the corresponding weighted value of Heat range；Size_weight is target
The corresponding weighted value of business size of video；
In addition, α, β and γ are respectively preset parameter value, type of business is respectively indicated, business uses Heat range and business
Weighted value corresponding to size, and alpha+beta+γ=1.
Specifically, the size of α, β and γ can be configured and be adjusted according to business need.
On the basis of caching ratio X of target video is obtained calculating using aforesaid way, it, can be with by step S213
Calculate the preparatory cache resources amount for obtaining target video.
Specifically, the calculation formula of the preparatory cache resources amount can be with are as follows: Ntraffic=N × X；
Wherein Ntraffic is the preparatory cache resources amount of target video；N can satisfy default total for MEC serving BS
Buffer memory.
Based on aforesaid way, by the service feature according to each business video, extract multiple default in service feature
The parameter information of characteristic parameter can determine the preparatory cache resources amount of each business video, and take from the supply of business video
The preparatory caching playing resource for the corresponding cache resources amount in advance of device downloading of being engaged in.
Above with respect to default characteristic parameter may include type of business, business uses Heat range and business size is only to lift
Example explanation, it is to be understood that for determining that the characteristic parameter of the preparatory cache resources amount size of target video is not limited to only
It is above-mentioned three, such as may also be only one of those or two, or can also includes other characteristic parameters, tool
Body can freely be set according to business need.
In addition, preferably, obtaining each default feature ginseng using service buffer method described in the specific embodiment of the invention
After the corresponding default weight information of number corresponds to table, the method also includes:
Interval preset time corresponds to table to the default weight information and is updated.
In addition, recalculating the preparatory slow of each video traffic on the basis of corresponding to table update to default weight information
Stock number is deposited, caching playing resource in advance is adjusted.
Preferably, service buffer method described in the specific embodiment of the invention, further includes:
The time point information finished when the preparatory caching playing resource is played is sent to the serving BS.
The time point information finished when being played preparatory caching playing resource by MEC serving BS is sent to service
Base station enables serving BS to send video traffic request to the provisioning server of target video according to the time point information, with
Obtain other playing resources in the playing resource of target video in addition to the preparatory caching playing resource.
In addition, the method also may further include:
The request of the second video traffic is sent to the provisioning server of the target video, the second video traffic request is used
In the requesting terminal requested for first video traffic, except described preparatory in the playing resource of target video described in request
Cache other playing resources outside playing resource.
It is asked by the above-mentioned means, MEC serving BS directly can send video traffic to the provisioning server of target video
It asks, other playing resources in the playing resource of request target video in addition to the preparatory caching playing resource make target
The video traffic that the provisioning server of video can be sent according to MEC server is requested, other playing resources are sent to terminal
Serving BS.
It above by the period for corresponding to table to default weight information or regularly adjusts, MEC serving BS can be made to delay
The preparatory caching playing resource deposited adapts to the business demand of different phase.
Specifically, using the specific reality of the service buffer method based on mobile edge calculations described in the specific embodiment of the invention
The process of applying can be as shown in figure 4, including:
S410, terminal send video traffic request to serving BS；It specifically, can be by requesting in the video traffic
Video traffic is added in Packet Data Convergence Protocol (Packet Data Convergence Protocol, referred to as PDCP)
Label, such as add " video " field, be expressed as video traffic request；
S420, serving BS receive the video traffic request of terminal, when detecting the label of video traffic, are confirmed as one
Video traffic request forwards the video traffic to request (request of the first video traffic) to MEC serving BS；
The target video in video traffic request that S430, MEC serving BS are sent according to serving BS, determination are preparatory
The stock number size of the preparatory caching playing resource of caching, the specific playing resource of caching in advance can be preparatory by above-mentioned mode
It determines, and preparatory caching playing resource is sent to serving BS；In present embodiment, MEC serving BS will delay in advance simultaneously
It deposits the time point information finished when playing resource plays and is sent to serving BS；
Preparatory caching playing resource transmitted by MEC serving BS is forwarded to terminal by S440, serving BS；
S450, serving BS obtains the time point information finished when caching playing resource plays in advance, when according to this
Between put information, then by terminal to serving BS send video traffic request in request play time be revised as in advance cache broadcast
The time point information finished when resource plays is put, to the provisioning server of target video forwarding video traffic request (second
Video traffic request), with its in the playing resource of target video described in request in addition to the preparatory caching playing resource
His playing resource；
S460, the provisioning server of target video receives the request of video traffic transmitted by serving BS, according to the video
Other playing resources outside the requested preparatory caching playing resource are sent to terminal, enabled the terminals to by service request
Remaining video playing resource is downloaded from the provisioning server of target video, and continues to carry out video playing.
The another aspect of the specific embodiment of the invention, above-mentioned step S430, MEC serving BS can not also will be preparatory
The time point information that caching playing resource finishes when playing is sent to serving BS, but in step S450, by servicing
Base station calculates the playing duration of the preparatory caching playing resource according to the received preparatory caching playing resource of institute；According to described
Playing duration determines that the second video traffic requests the broadcasting starting point of other requested playing resources, wherein second view
It include the broadcasting starting point in frequency service request.On the basis of which, can further it be taken to the supply of target video
Business device forwarding video traffic request (request of the second video traffic), to remove institute in the playing resource of target video described in request
Other playing resources outside caching playing resource in advance are stated, can achieve from the provisioning server of target video and download remaining view
The purpose of frequency playing resource.
In addition, using the specific implementation of the service buffer method based on mobile edge calculations described in the specific embodiment of the invention
Process may be as shown in Figure 5, comprising:
S510, terminal send video traffic request to serving BS；Specifically, the grouping by being requested in the video traffic
The mark of video traffic is added in data convergence protocol (Packet Data Convergence Protocol, referred to as PDCP)
Note such as adds " video " field, is expressed as video traffic request；
S520, serving BS receive the video traffic request of terminal, when detecting the label of video traffic, are confirmed as one
Video traffic request forwards the video traffic to request (request of the first video traffic) to MEC serving BS；
The target video in video traffic request that S530, MEC serving BS are sent according to serving BS, determination are preparatory
The preparatory caching playing resource of caching, and preparatory caching playing resource is sent to serving BS；
S540, MEC serving BS request (the second video industry to the provisioning server of target video forwarding video traffic
Business request), the requesting terminal for being requested for first video traffic, in the playing resource of target video described in request
Other playing resources in addition to the preparatory caching playing resource；Specifically, MEC serving BS is played by calculating caching in advance
The time point information that resource finishes when playing repairs the request play time in the request of video traffic transmitted by terminal
It is changed to cache the time point information finished when playing resource plays in advance, forwards video to the provisioning server of target video
Service request caches other playing resources outside playing resource with request in advance；
Preparatory caching playing resource transmitted by MEC serving BS is forwarded to terminal by S550, serving BS；
S560, the provisioning server of target video receives the request of video traffic transmitted by MEC serving BS, according to the view
Other playing resources outside the requested preparatory caching playing resource are sent to terminal, enable terminal by frequency service request
It is enough to download remaining video playing resource from the provisioning server of target video.
Based on above-mentioned mode, it will be used to obtain other broadcastings outside caching playing resource in advance by MEC serving BS
The video traffic request of resource is sent to the provisioning server of target video, can also reach the provisioning server from target video
Download the purpose of remaining video playing resource.
According to the above, using service buffer method described in the specific embodiment of the invention, according to the business of different business video
Feature, can cache part playing resource, and initial buffer stage when user watches video in this way will can only be cached
Part playing resource is sent to the serving BS of user, can be taken by the supply of video in the stabilization sub stage that user watches video
Business device downloads other playing resources, so as to shorten the RRT duration between initial buffer phase user and MEC serving BS, not
Under the premise of increasing MEC load and cost, round-trip delay when user watches video in the initial buffer stage is reduced.
The specific embodiment of the invention also provides another service buffer method based on mobile edge calculations, is applied to terminal
Serving BS, as shown in Figure 6, comprising:
S610, Xiang Yidong edge calculations MEC serving BS send the request of the first video traffic, wherein the first video industry
Business request is used for the playing resource of one target video of request；
S620 receives the preparatory caching playing resource for the target video that the MEC serving BS is sent, wherein described
Caching playing resource is the part playing resource of the target video in advance, and the stock number of the preparatory caching playing resource is root
It is determined according to the service feature of the target video.
Using service buffer method described in the specific embodiment of the invention, can pass through in the initial buffer stage of target video
MEC serving BS fetching portion playing resource can pass through the provisioning server of target video in the stabilization sub stage of target video
Other playing resources are downloaded, to reach the RRT duration shortened between initial buffer phase user and MEC serving BS, are not being increased
Under the premise of adding MEC load and cost, reduce user watch video when the initial buffer stage round-trip delay effect.
Preferably, the service buffer method further include:
Receive the solicited message that requesting terminal is sent；
When in the solicited message including video request identifier, then according to the solicited message, Xiang Suoshu MEC service
Base station sends the first video traffic request.
That is, the request of the first video traffic is that it is requested to the video traffic of target video in serving BS reception requesting terminal
Afterwards, it is generated transmitted by the request of the video traffic according to transmitted by user.
Further, in step S620, the preparatory caching for receiving the target video that the MEC serving BS is sent is broadcast
After the step of putting resource, the method also includes:
The preparatory caching playing resource is forwarded to the requesting terminal, so that requesting terminal obtains the pre- of target video
First cache playing resource.
In addition, the preparatory caching for receiving the target video that the MEC serving BS is sent plays money in step S620
After the step of source, the method also includes:
The request of the second video traffic is sent to the provisioning server of the target video, the second video traffic request is used
In the requesting terminal requested for first video traffic, except described preparatory in the playing resource of target video described in request
Cache other playing resources outside playing resource.
Specifically, using aforesaid way, before sending the request of the second video traffic to the provisioning server of target video,
The method also includes:
Receive the time point letter finished when the preparatory caching playing resource that the MEC serving BS is sent plays
Breath；
According to the time point information, determine that second video traffic requests the broadcasting of other requested playing resources
Starting point, wherein including the broadcasting starting point in second video traffic request.
Using the above process, serving BS receives the time point information that MEC serving BS hair is sent, the confession to target video
It sends video traffic to server to request, in the playing resource to obtain target video in addition to the preparatory caching playing resource
Other playing resources.
The another aspect of service buffer method described in the specific embodiment of the invention receives the MEC service in step S620
After the step of preparatory caching playing resource for the target video that base station is sent, the method also includes:
According to the received preparatory caching playing resource of institute, the playing duration of the preparatory caching playing resource is calculated；
According to the playing duration, determine that second video traffic requests the broadcasting of other requested playing resources to rise
Initial point, wherein including the broadcasting starting point in second video traffic request.
Using which, can be calculated described slow in advance by serving BS according to the received preparatory caching playing resource of institute
The playing duration of playing resource is deposited, to determine that the second video traffic requests the broadcasting starting point of other requested playing resources,
Obtain other playing resources in the playing resource of the target video in addition to the preparatory caching playing resource.
It can be refering to Fig. 4 and Fig. 5 using the detailed process that above-mentioned different modes obtain whole playing resources of target video
Shown, details are not described herein.
On the other hand the specific embodiment of the invention also provides a kind of mobile edge calculations MEC serving BS, as shown in fig. 7,
The MEC serving BS includes:
First transceiver, for receiving the first video traffic request of serving BS transmission, wherein first video
Service request is used for the playing resource of one target video of request；
Second transceiver, for the preparatory caching playing resource of the target video to be sent to the serving BS；Its
Described in cache in advance playing resource be the target video part playing resource, it is described it is preparatory caching playing resource resource
Amount is determined according to the service feature of the target video.
Preferably, the MEC serving BS further include:
First processor determines the preparatory caching of the target video for the service feature according to the target video
Stock number；
Second processor, for delaying to the playing resource of the target video according to the preparatory cache resources amount
It deposits, obtains the preparatory caching playing resource.
In addition, the first processor specifically includes:
First sub-processor, the parameter letter of multiple default characteristic parameters in the service feature for extracting the target video
Breath；
Second sub-processor presets weighted value corresponding with the parameter information of each default characteristic parameter for basis,
Calculate the target video caches ratio；
Third sub-processor, for according to preset total buffer memory and it is described cache ratio, determine that the preparatory caching provides
Source amount.
Wherein, second sub-processor is specifically used for: corresponding to table, determining and each default spy according to default weight information
Levy the corresponding weighted value of parameter information of parameter；Wherein it is corresponding to respectively correspond a default weight information for each default characteristic parameter
Table, the default weight information correspond in table, and different parameters information corresponds to different weighted values.
Specifically, the default characteristic parameter includes type of business, business using Heat range and/or business size.
Using MEC serving BS described in the specific embodiment of the invention, determines the stock number of caching playing resource in advance, go forward side by side
The mode of row caching playing resource downloading in advance can be in conjunction with table 1 and refering to above description, and details are not described herein.
Further, preferably, as shown in fig. 7, the MEC serving BS further include:
Third processor corresponds to table to the default weight information for being spaced preset time and is updated.
In addition, the MEC serving BS can also include:
Third transceiver, the time point information finished when for playing the preparatory caching playing resource are sent to
The serving BS.
The another aspect of the specific embodiment of the invention, the MEC serving BS can also include:
4th transceiver, for sending the request of the second video traffic to the provisioning server of the target video, described the
The request of two video traffics is used for the requesting terminal for first video traffic request, the broadcasting of target video described in request
Other playing resources in resource in addition to the preparatory caching playing resource.
Using MEC serving BS described in the specific embodiment of the invention, by the part playing resource of caching of target video,
The part playing resource cached can be only sent to the service of user by initial buffer stage when user watches target video
Base station can download other in the stabilization sub stage that user watches target video by the provisioning server of target video and play money
Source is not increasing MEC load and cost so as to shorten the RRT duration between initial buffer phase user and MEC serving BS
Under the premise of, reduce user watch video when the initial buffer stage round-trip delay.
On the other hand the specific embodiment of the invention also provides a kind of serving BS, as shown in Figure 8, comprising:
First transceiver, for sending the request of the first video traffic to mobile edge calculations MEC serving BS, wherein described
The request of first video traffic is used for the playing resource of one target video of request；
Second transceiver, the preparatory caching for receiving the target video that the MEC serving BS is sent play money
Source, wherein the preparatory caching playing resource is the part playing resource of the target video, the preparatory caching playing resource
Stock number be according to the service feature of the target video determine.
Specifically, the first transceiver is also used to:
Receive the solicited message that requesting terminal is sent；
When in the solicited message including video request identifier, then according to the solicited message, Xiang Suoshu MEC service
Base station sends the first video traffic request.
In addition, the second transceiver is also used to: the preparatory caching playing resource is forwarded to the requesting terminal.
Preferably, as shown in figure 8, the serving BS can also include:
Third transceiver, for sending the request of the second video traffic to the provisioning server of the target video, described the
The request of two video traffics is used for the requesting terminal for first video traffic request, the broadcasting of target video described in request
Other playing resources in resource in addition to the preparatory caching playing resource.
The another aspect of the specific embodiment of the invention, the serving BS can also include:
4th transceiver is broadcast for receiving when the preparatory caching playing resource that the MEC serving BS is sent plays
Discharge complete time point information；
First processor, for according to the time point information, determine the second video traffic request it is requested its
The broadcasting starting point of his playing resource, wherein including the broadcasting starting point in second video traffic request.
In addition, the serving BS can also include:
Second processor, for calculating the preparatory caching and playing according to the received preparatory caching playing resource of institute
The playing duration of resource；
Third processor, for according to the playing duration, determine the second video traffic request it is requested other
The broadcasting starting point of playing resource, wherein including the broadcasting starting point in second video traffic request.
Using serving BS described in the specific embodiment of the invention, MEC can be passed through in the initial buffer stage of target video
Serving BS fetching portion playing resource can be downloaded in the stabilization sub stage of target video by the provisioning server of target video
Other playing resources are not increasing MEC to reach the RRT duration shortened between initial buffer phase user and MEC serving BS
Under the premise of load and cost, reduce user watch video when the initial buffer stage round-trip delay effect.
On the other hand the specific embodiment of the invention also provides a kind of communication equipment, including memory, processor and be stored in
On the memory and the computer program that can run on the processor；Wherein, when the processor executes described program
Described in any item service buffer methods based on mobile edge calculations in realization.
Specifically, the communication equipment can be MEC serving BS or serving BS.
The another aspect of the specific embodiment of the invention also provides a kind of computer readable storage medium, is stored thereon with calculating
Machine program, wherein realize that as above described in any item business based on mobile edge calculations are slow when the program is executed by processor
Deposit the step in method.
Based on above detailed description, those skilled in the art should be able to understand using described in the specific embodiment of the invention
The communication equipment of service buffer method based on mobile edge calculations and the specific embodiment of computer readable storage medium,
This is repeated no more.
Using specific embodiment of the invention the method and serving BS, money is played by the part of caching of target video
Source can shorten the RTT duration between initial buffer phase user and server, reduce initial buffer time delay, promote user and exist
The experience in the initial buffer stage of video is watched, while reducing MEC load and hardware cost.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (30)
1. a kind of service buffer method based on mobile edge calculations characterized by comprising
The first video traffic request of serving BS transmission is received, wherein first video traffic request is used for request
The playing resource of one target video；
The preparatory caching playing resource of the target video is sent to the serving BS；Wherein the preparatory caching plays money
Source is the part playing resource of the target video, and the stock number of the preparatory caching playing resource is according to the target video
Service feature determine.
2. the service buffer method according to claim 1 based on mobile edge calculations, which is characterized in that the method is also
Include:
According to the service feature of the target video, the preparatory cache resources amount of the target video is determined；
According to the preparatory cache resources amount, the playing resource of the target video is cached, obtains the preparatory caching
Playing resource.
3. the service buffer method according to claim 2 based on mobile edge calculations, which is characterized in that described according to institute
The service feature for stating target video, the step of determining the preparatory cache resources amount of the target video include:
Extract the parameter information of multiple default characteristic parameters in the service feature of the target video；
According to default weighted value corresponding with the parameter information of each default characteristic parameter, delaying for the target video is calculated
Deposit ratio；
According to preset total buffer memory and it is described cache ratio, determine the preparatory cache resources amount.
4. the service buffer method according to claim 3 based on mobile edge calculations, which is characterized in that the basis is pre-
If weighted value corresponding with the parameter information of each default characteristic parameter, calculates the step for caching ratio of the target video
In rapid:
Table is corresponded to according to default weight information, determines weighted value corresponding with the parameter information of each default characteristic parameter；Wherein
Each default characteristic parameter respectively corresponds a default weight information and corresponds to table, and the default weight information corresponds in table, difference ginseng
Number information corresponds to different weighted values.
5. the service buffer method according to claim 3 based on mobile edge calculations, which is characterized in that the default spy
Sign parameter includes type of business, business using Heat range and/or business size.
6. the service buffer method according to claim 4 based on mobile edge calculations, which is characterized in that the method is also
Include:
Interval preset time corresponds to table to the default weight information and is updated.
7. the service buffer method according to claim 1 based on mobile edge calculations, which is characterized in that the method is also
Include:
The time point information finished when the preparatory caching playing resource is played is sent to the serving BS.
8. the service buffer method according to claim 1 based on mobile edge calculations, which is characterized in that the method is also
Include:
Send the request of the second video traffic to the provisioning server of the target video, second video traffic request for for
The preparatory caching is removed in the playing resource of target video described in request in the requesting terminal of first video traffic request
Other playing resources outside playing resource.
9. a kind of service buffer method based on mobile edge calculations characterized by comprising
The request of the first video traffic is sent to mobile edge calculations MEC serving BS, wherein first video traffic request is used
In the playing resource of one target video of request；
The preparatory caching playing resource for receiving the target video that the MEC serving BS is sent, wherein the preparatory caching
Playing resource is the part playing resource of the target video, and the stock number of the preparatory caching playing resource is according to the mesh
The service feature for marking video determines.
10. the service buffer method according to claim 9 based on mobile edge calculations, which is characterized in that the method
Further include:
Receive the solicited message that requesting terminal is sent；
When in the solicited message including video request identifier, then according to the solicited message, Xiang Suoshu MEC serving BS
Send the first video traffic request.
11. the service buffer method according to claim 10 based on mobile edge calculations, which is characterized in that the reception
After the step of preparatory caching playing resource for the target video that the MEC serving BS is sent, the method also includes:
The preparatory caching playing resource is forwarded to the requesting terminal.
12. the service buffer method according to claim 9 based on mobile edge calculations, which is characterized in that connect described
After the preparatory caching playing resource for receiving the target video that the MEC serving BS is sent, the method also includes:
Send the request of the second video traffic to the provisioning server of the target video, second video traffic request for for
The preparatory caching is removed in the playing resource of target video described in request in the requesting terminal of first video traffic request
Other playing resources outside playing resource.
13. the service buffer method according to claim 12 based on mobile edge calculations, which is characterized in that described to institute
Before provisioning server transmission the second video traffic request for stating target video, the method also includes:
Receive the time point information finished when the preparatory caching playing resource that the MEC serving BS is sent plays；
According to the time point information, determine that second video traffic requests the broadcasting of other requested playing resources to originate
Point, wherein including the broadcasting starting point in second video traffic request.
14. the service buffer method according to claim 12 based on mobile edge calculations, which is characterized in that described to institute
Before provisioning server transmission the second video traffic request for stating target video, the method also includes:
According to the received preparatory caching playing resource of institute, the playing duration of the preparatory caching playing resource is calculated；
According to the playing duration, determine that second video traffic requests the broadcasting of other requested playing resources to originate
Point, wherein including the broadcasting starting point in second video traffic request.
15. a kind of mobile edge calculations MEC serving BS characterized by comprising
First transceiver, for receiving the first video traffic request of serving BS transmission, wherein first video traffic
Request is used for the playing resource of one target video of request；
Second transceiver, for the preparatory caching playing resource of the target video to be sent to the serving BS；Wherein institute
The part playing resource that caching playing resource in advance is the target video is stated, the stock number of the preparatory caching playing resource is
It is determined according to the service feature of the target video.
16. mobile edge calculations MEC serving BS according to claim 15, which is characterized in that the MEC serving BS
Further include:
First processor determines the preparatory cache resources of the target video for the service feature according to the target video
Amount；
Second processor, for caching, obtaining to the playing resource of the target video according to the preparatory cache resources amount
Obtain the preparatory caching playing resource.
17. mobile edge calculations MEC serving BS according to claim 16, which is characterized in that the first processor
It specifically includes:
First sub-processor, the parameter information of multiple default characteristic parameters in the service feature for extracting the target video；
Second sub-processor, for calculating according to weighted value corresponding with the parameter information of each default characteristic parameter is preset
The target video caches ratio；
Third sub-processor, for according to preset total buffer memory and it is described cache ratio, determine the preparatory cache resources amount.
18. mobile edge calculations MEC serving BS according to claim 17, which is characterized in that second subprocessing
Implement body is used for: being corresponded to table according to default weight information, is determined weight corresponding with the parameter information of each default characteristic parameter
Value；Wherein each default characteristic parameter respectively corresponds a default weight information and corresponds to table, and the default weight information corresponds in table,
Different parameters information corresponds to different weighted values.
19. mobile edge calculations MEC serving BS according to claim 17, which is characterized in that the default feature ginseng
Number uses Heat range and/or business size including type of business, business.
20. mobile edge calculations MEC serving BS according to claim 18, which is characterized in that the MEC serving BS
Further include:
Third processor corresponds to table to the default weight information for being spaced preset time and is updated.
21. mobile edge calculations MEC serving BS according to claim 15, which is characterized in that the MEC serving BS
Further include:
Third transceiver, the time point information finished when for playing the preparatory caching playing resource are sent to described
Serving BS.
22. mobile edge calculations MEC serving BS according to claim 15, which is characterized in that the MEC serving BS
Further include:
4th transceiver, for sending the request of the second video traffic, second view to the provisioning server of the target video
Frequency service request is used for the requesting terminal requested for first video traffic, the playing resource of target video described in request
In except it is described it is preparatory caching playing resource in addition to other playing resources.
23. a kind of serving BS characterized by comprising
First transceiver, for sending the request of the first video traffic to mobile edge calculations MEC serving BS, wherein described first
Video traffic request is used for the playing resource of one target video of request；
Second transceiver, for receiving the preparatory caching playing resource for the target video that the MEC serving BS is sent,
Described in cache in advance playing resource be the target video part playing resource, it is described it is preparatory caching playing resource resource
Amount is determined according to the service feature of the target video.
24. serving BS according to claim 23, which is characterized in that the first transceiver is also used to:
Receive the solicited message that requesting terminal is sent；
When in the solicited message including video request identifier, then according to the solicited message, Xiang Suoshu MEC serving BS
Send the first video traffic request.
25. serving BS according to claim 24, which is characterized in that the second transceiver is also used to: will be described pre-
First caching playing resource is forwarded to the requesting terminal.
26. serving BS according to claim 23, which is characterized in that the serving BS further include:
Third transceiver, for sending the request of the second video traffic, second view to the provisioning server of the target video
Frequency service request is used for the requesting terminal requested for first video traffic, the playing resource of target video described in request
In except it is described it is preparatory caching playing resource in addition to other playing resources.
27. serving BS according to claim 26, which is characterized in that the serving BS further include:
4th transceiver is played for receiving when the preparatory caching playing resource that the MEC serving BS is sent plays
Complete time point information；
First processor, for determining that second video traffic requests requested other to be broadcast according to the time point information
The broadcasting starting point of resource is put, wherein including the broadcasting starting point in second video traffic request.
28. serving BS according to claim 26, which is characterized in that the serving BS further include:
Second processor, for calculating the preparatory caching playing resource according to the received preparatory caching playing resource of institute
Playing duration；
Third processor, for determining other requested broadcastings of the second video traffic request according to the playing duration
The broadcasting starting point of resource, wherein including the broadcasting starting point in second video traffic request.
29. a kind of communication equipment, including memory, processor and it is stored on the memory and can transports on the processor
Capable computer program；It is characterized in that, the processor is realized as described in claim any one of 1-8 when executing described program
The service buffer method based on mobile edge calculations, or realize as claim 9-14 is described in any item based on mobile side
The service buffer method that edge calculates.
30. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The step in the described in any item service buffer methods based on mobile edge calculations of such as claim 1-8 is realized when execution, or
Person realizes such as the step in the described in any item service buffer methods based on mobile edge calculations of claim 9-14.
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