CN105100276B - A kind of region content caching devices and methods therefor towards inferior content distribution system - Google Patents
A kind of region content caching devices and methods therefor towards inferior content distribution system Download PDFInfo
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- CN105100276B CN105100276B CN201510549692.XA CN201510549692A CN105100276B CN 105100276 B CN105100276 B CN 105100276B CN 201510549692 A CN201510549692 A CN 201510549692A CN 105100276 B CN105100276 B CN 105100276B
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- 102000000584 Calmodulin Human genes 0.000 claims description 8
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
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Abstract
A kind of region content caching devices and methods therefor towards inferior content distribution system of the present invention, by analyzing one's respective area mobile network data, the user behavior characteristics and traffic characteristic of extract real-time region are chosen qualified content caching from content source in conjunction with preset contents selection strategy and are updated in the buffer unit of region；Since the caching of region content in the present invention considers the factors such as zone user behavioural characteristic and zone flow service condition, the phenomenon that not only having well solved present information overload, and the content of caching can be received with larger probability transmission success and by user when being sent to user or underlying system using the inferior communication pipe based on redundancy capacity, it is low with rate, the high feature of content compatible degree, therefore there is preferable user experience, and the present invention can realize making full use of for network capacity and spatial cache on the basis of not influencing operator's original business, avoid the waste of idling-resource.
Description
Technical field
The present invention relates to wireless communication technology field, be related to it is a kind of based on traffic aware towards inferior content distribution system
Region content caching devices and methods therefor.
Background technology
With the fast development of internet, the information sharp increase in network, people want to find, collect and safeguard oneself
Required information requires a great deal of time and energy, and " information overload " phenomenon is increasingly severe.Content recommendation system is solution
The certainly effective scheme of this problem, it recommends the object for meeting user demand, realizes personalized service according to the feature of user.
Content recommendation system is one of the technology in order to solve Internet era information overload, is a branch of information filtering method,
It is defined as one kind and modeling or be based on community network by user characteristics, and user is to original project (such as books, sound for prediction
Pleasure, film etc.) or social factor (people or group) preference and scoring, the method that commending contents are made to user according to the scoring
Or tool.Content recommendation system is different with traditional acquisition of information channel, and user's's " passive " gets pushing away for system " active "
It recommends, in general, good commending system can greatly promote the usage experience of user.
Existing content recommendation system is mainly analyzed by the navigation patterns to user with browsing history, and use is excavated
Content recommendation service is carried out after the interest model at family.In user group's modeling, collaborative filtering recommending mode, which is also built upon, seeks
It finds out and realizes commending contents on the basis of the user group of same interest characteristic.However these content recommendation systems to
Geographical location residing for family or functional areas consideration are less, and above-mentioned factor will also produce the content selection of user to a certain extent
Raw certain influence.
At this stage, since mobile radio access network capacity overall utilization is not high, cause to have accumulated a large amount of redundancy appearance
Amount, as shown in Figure 1.Mainly there are two aspects for the reason of causing the problem.First, in specific region, the flow demand of user is past
Toward unbalanced phenomena is presented on Annual distribution, the flow demand of peak time is typically much higher than average flow rate demand；And it is another
Aspect, in mobile communication system planning construction, in order to meet the reliability indexs such as percent of call completed, the deployment of network capacity is with height
Based on the flow demand of peak phase, this necessarily causes the appearance of a large amount of " redundancy capacities ".Meanwhile it being formed by the numerous base stations of distribution thick
Close network solves the growing flow demand of user, and to improve user QoE be trend of the times.Morphologically will following base station
Develop towards the macro base station of higher performance and integrated level, the smaller micro-base station of volume, more flexible three kinds of directions of distributed base station,
More selections and greater flexibility are brought to carrier network construction.But base station miniaturization, which is deployed in, further promotes net
While network capacity, more network redundancy capacity will be brought for mobile communications network by also implying that.Therefore a kind of foundation is designed
Value-added service project under existing redundant resource has certain foreground and feasibility.
Method currently used for solving network redundancy capacity problem mainly has three classes：The first, it is referred to as elasticity volume technology,
It is conceived to adjustment network capacity, the quick suspend mode such as base station and start-up technique, but flow demand could not be fundamentally promoted, and
To network fixed investment（The cost of frequency spectrum resource, infrastructure etc.）Waste；The second, it is referred to as charging differentiation method, i.e.,
For certain specific periods or specific content, flow demand is pushed with more preferential rate, but controllability is low, applicable surface
It is small；Third is referred to as radio infrastructure cloud, i.e., directly disposes cloud on the network infrastructures such as wireless access network or bearer network
Clothes, provide the services such as calculating and the caching other than communication for local user nearby, but be substantially directed to flow when
Between the upper unbalanced situation of distribution effectively improve flow demand.To sum up, existing method cannot all efficiently solve mobile network
Redundancy capacity problem, the especially not high problem of wireless access network capacity utilization.
Invention content
The region content caching device and its side that the purpose of the present invention is to provide a kind of towards inferior content distribution system
Method is distributed unbalanced situation for network flow and proposes flow equalization scheme, can not influence mobile communication in time
On the basis of the original business of operator, the utilization rate of wireless access network capacity is effectively improved, realizes network capacity and caching
Space makes full use of, and avoids the waste of network extra spare resource.
A kind of region content caching device towards inferior content distribution system of the present invention, including traffic aware unit, use
Family feature extraction unit, cache contents administrative unit, region buffer unit, wherein
The traffic aware unit：For counting region mobile network's flow service condition, and analyze zone flow
Feature；
The user characteristics extraction unit：The usage behavior of zone user is analyzed, by region buffer unit
User's service condition of cache contents is for statistical analysis, obtains zone user population statistics feature, calmodulin binding domain CaM position feature
Go out user behavior characteristics with zone user population statistics feature extraction；
The cache contents administrative unit：Cache contents in the buffer unit of region are managed, and are obtained from content source
Available content list is taken, when needing the cache contents to region buffer unit to be cached and being updated, is carried in conjunction with user characteristics
Take user behavior characteristics, the zone flow feature and region buffer unit spatial cache of the extraction of traffic aware unit that unit extracts
Service condition, from content source choose qualified content caching according to preset contents selection strategy and to be updated to region slow
In memory cell；
The region buffer unit：It is fed back for being cached to region content, and by user's service condition of cache contents
To user characteristics extraction unit the extraction and update of user behavior characteristics are carried out for it.
The caching method of a kind of region content caching device towards inferior content distribution system, by local area
Domain mobile network data is analyzed, the user behavior characteristics and traffic characteristic of extract real-time region, in conjunction with user characteristics
The user behavior characteristics of extraction unit extraction, the zone flow feature of traffic aware unit extraction and region buffer unit caching are empty
Between service condition, choose qualified content caching from content source according to preset contents selection strategy and be updated to region
In buffer unit.
Further, further include following steps：
Step 1, traffic aware unit record region mobile network's flow service condition, and analyze zone flow spy
Sign；
Step 2, user characteristics extraction unit by user's service condition to the cache contents in the buffer unit of region into
Row statistical analysis, obtains zone user population statistics feature, and calmodulin binding domain CaM position feature and zone user population statistics feature carry
Take out user behavior characteristics；
Step 3, cache contents administrative unit obtain available content list from content source, and combine and extracted in steps 1 and 2
The service condition of spatial cache in the zone flow feature and user behavior characteristics and region buffer unit that go out, from table of contents
Qualified content caching is chosen according to preset contents selection strategy and be updated to region buffer unit in list；
User's service condition of cache contents is fed back to user characteristics extraction unit and supplies it by step 4, region buffer unit
Carry out the extraction and update of user behavior characteristics.
The present invention is chosen by analyzing region crowd's usage behavior characteristic and Local Area Network capacity service condition
Go out to be most suitable in the content of region crowd and active cache to region buffer unit.The content of the caching is issued for secondary content
Channel utilizes, and " secondary " here means to carry out content transmission using the redundancy capacity of network.Due to the cache contents of the present invention
Strategy with reference to the information of network flow and " redundancy capacity ", therefore the content cached will pass through " secondary " with greater probability
Pipeline issues, while not influencing the use of conversational traffic flow.Such as using region cache contents as in content recommendation system
Rong Yuan provides a user the content recommendation service of low rate with this.It is used since the caching of region content of the present invention considers region
The phenomenon that factors such as family behavioural characteristic and zone flow service condition, this has well solved present " information overload ", caching
Content can be received by user with larger probability when being sent to user or underlying system.The content that the present invention caches can pass through
The modes such as push are promoted and are issued, and can also allow user's active pull.From the perspective of user, due to the selection of content
The characteristics of considering region and user interest, and the content pushed matches with network redundancy capacity, can avoid causing
Network congestion, therefore have the characteristics that rate are low, content compatible degree is high, therefore have preferable user experience.
Only additional functionality equipment need to be added on original base facility can be realized, keep away using the system building of the present invention
Exempt from complicated, large-scale network change, has operability.The present invention can be on the basis of not influencing operator's original business
It realizes making full use of for network capacity and spatial cache, avoids the waste of idling-resource.
Description of the drawings
Fig. 1 is Radio Access Network redundancy capacity schematic diagram；
Fig. 2 is the fundamental diagram of content caching device in region of the present invention；
Fig. 3 is the general plan schematic diagram of inferior content distribution system；
Fig. 4 is buffer unit deployment way one schematic diagram in region in the present invention；
Fig. 5 is buffer unit deployment way two schematic diagram in region in the present invention.
The present invention is further described with attached drawing with reference to embodiments.
Specific implementation mode
As shown in Fig. 2, the present invention proposes a kind of region content caching device towards inferior content distribution system, including stream
Amount perception unit 100, user characteristics extraction unit 200, cache contents administrative unit 300, region buffer unit 400, wherein
The traffic aware unit 100：For counting region mobile network's flow service condition, and analyze region stream
Measure feature；
It can be realized by monitoring the traffic intensity of base station in region, such as from the Gn mouths (3G network) or S1 of core network
Mouth (4G networks) uses depth Packet analyzing（DPI）Technical monitoring origin base station traffic intensity, or by base-station gateway to base station
Regular flow is directly monitored and is counted；The field capacity statistical property can be by tracking and drawing base station regular flow
Change curve obtains；As shown in Figure 1, curve is regular flow situation of change in the period, red line is channel capacity, therefore white
Color region is redundancy capacity situation of change, and the division of time granularity is depending on the update cycle of region content, traffic aware
Unit 100 by the flow changing curve carry out feature extraction, can obtain different periods region redundancy capacity statistical nature,
The zone flow statistical nature carries the part reference frame as region cache contents from the angle of control content file size
Rise the validity of cache contents；
The user characteristics extraction unit 200：The usage behavior of zone user is analyzed, by region buffer unit
User's service condition of 400 cache contents is for statistical analysis, obtains area peripheral edge user group's statistical nature, calmodulin binding domain CaM
Position feature and zone user population statistics feature extraction go out user behavior characteristics, and the regional location is characterized as affiliated area
Functional areas type, such as shopping centre, school, residential block etc., residing different functional areas will also use region to a certain extent
The service usage behavior at family has an impact；The zone user behavioural characteristic can reflect the behavior of the zone user group
Where custom and point of interest；
The cache contents administrative unit 300：Cache contents in the buffer unit of region are managed, and from content source
Available content list is obtained in 500, when needing to be updated 400 cache contents of region buffer unit, by combining user
The zone flow feature that the zone user behavioural characteristic and traffic aware unit 100 that feature extraction unit 200 is extracted are extracted, according to
Buffer unit 400 spatial cache size in region is chosen from content source 500 in qualified according to preset contents selection strategy
Hold caching and is updated in region buffer unit 400；
Region buffer unit 400：For being cached to region content, usually storage device, is deployed in wireless access
At net, it is responsible for user's service condition of cache contents in region buffer unit 400 is fed back to user characteristics extraction unit 200 supplying
It carries out the extraction and update of user behavior characteristics.
As shown in Fig. 2, a kind of region content buffering method towards inferior content distribution system of the present invention, by local area
Domain mobile network data is analyzed, the user behavior characteristics and traffic characteristic of extract real-time region, in preset
Hold Selection Strategy to choose qualified content caching from content source 500 and be updated in region buffer unit 400；It specifically includes
Following steps：
Step 1, traffic aware unit 100 record region mobile network's flow service condition, and analyze region stream
Measure feature；
The record of traffic aware unit 100 and feedback areas redundancy capacity scatter chart of the present invention, as shown in Figure 1, when
Between scale selection on should be according to real system content update frequency come the cutting granularity of Subdivision Curves figure time shaft.If in carrying out
Service time section inner region redundancy capacity when holding update residing for system is relatively low, then this when will be before considering user interest
The larger content of filtration capacity is put such as video, audio, then more concern capacity small content, such as text, picture etc.
Information influences user experience to prevent from causing system congestion（QoE）, the influence to regular service is may also result in when serious.
In addition, when if service window network redundancy capacity is well-to-do, it can consider that the larger content of capacity is transmitted emphatically, fully profit
Use available resources.In addition also contribute to alleviate the transmission pressure of backhaul network in the resource of local cache larger capacity；
Step 2, user characteristics extraction unit 200 use feelings by the user to cache contents in region buffer unit 400
Condition is for statistical analysis, obtains area peripheral edge user group's statistical nature, calmodulin binding domain CaM position feature and zone user group system
Meter feature extraction goes out user behavior characteristics；
The user characteristics extraction unit 200 can first obtain the IP of each base station in range of management in initial phase, simultaneously
Origin base station topology diagram is obtained, the regional location feature in region residing for base station is obtained according to its position coordinates combination map,
Its point of interest of user group in different classifications region or service usage behavior are generally also different, while knowing base station
The fixed point dispensing and be oriented to that residing region also more efficiently can realize promotional content, improve content and promote success rate；
Step 3, cache contents administrative unit 300 obtain available content list [3-1] from content source 500, and combine step
The use of spatial cache in the zone flow feature and user behavior characteristics and region buffer unit 400 that are extracted in rapid 1,2
Situation [3-2] chooses qualified content caching according to preset contents selection strategy from content list and is updated to area
In domain buffer unit 400 [3-3]；
Step 4, region buffer unit 400 count user's service condition of cache contents, and feed back to user spy
It levies extraction unit 200 and carries out the extraction and update of user behavior characteristics for it.
As shown in figure 3, the present invention's is divided into 3 parts towards inferior content distribution system by deployment region, respectively
Wireless access network, core net and outer net.
Region buffer unit 400 is deployed at wireless access network, and content is conveyed directly to user equipment by base station single-hop
Or it is used for other secondary services.As shown in Figure 4 and Figure 5, it can be one region buffer unit 400 of each base station deployment,
Can also multiple base stations altogether there are one region buffer unit 400, depending on set region scale.
User characteristics extraction unit 200, cache contents administrative unit 300 can be deployed in outer net, at core net to each
Control area carries out centralized management, not only contributes to the unified allocation of resources and management of resource in this way, also can by user equipment or
It is that computational load on base station shifts in the infrastructure of outer net or core net, the service performance of equipment is secure.It is another
User characteristics extraction unit 200, can be deployed in the wireless access network of communication network, using distributed management side by kind mode
The advantages of formula, which, is：Due to the very big shrink of computing device and buffer memory device cost, calculating is set up in base station
Unit can suitably alleviate the calculating pressure of core network, have certain values and feasibility.Simultaneously according to additional application
（APP）Come when obtaining zone user end using cache contents information, the user characteristics by being deployed in wireless access network extract single
Member 200 is directly communicated with user terminal can be to avoid the originally rare backhaul link bandwidth of consumption core net.
Traffic aware unit 100 can be deployed in each base station of wireless access network, be directly acquired simultaneously by base-station gateway
Region redundancy capacity situation is counted, can also be deployed at network core through depth Packet analyzing（DPI）Gn mouthfuls of technical monitoring
Data obtain Local Area Network redundancy capacity situation.
The present invention's focuses on, and calmodulin binding domain CaM user custom needs range of summation redundant flow distribution character, according to preset
Contents selection scheme chosen from content source and meet the content of zone user use habit and zone flow distribution situation simultaneously
In caching to limited local cache space.It is distributed unbalanced situation in time for network flow, realization is not influencing
On the basis of operator's original business, wireless access network capacity utilization is effectively improved, realizes network capacity and spatial cache
Make full use of, avoid the waste of network extra spare resource.
The foregoing is merely the preferable implementation use-cases of the present invention, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement and improvement etc., should be included in the present invention's made by
Within protection domain.
Claims (3)
1. a kind of region content caching device towards inferior content distribution system, it is characterised in that including traffic aware unit,
User characteristics extraction unit, cache contents administrative unit, region buffer unit, wherein
The traffic aware unit：For counting region mobile network's flow service condition, and analyze zone flow feature；
From the Gn mouths of core network or the S1 mouthfuls of traffic intensities using base station in depth Packet analyzing DPI technical monitorings region, or
Base station regular flow is directly monitored and counted by base-station gateway, it is bent by tracking and drawing base station regular flow variation
Line obtains zone flow feature, can obtain different periods Local Area Network redundancy capacity statistical nature, and the Local Area Network is superfluous
Part reference frame of the covolume amount statistical nature as region cache contents is promoted from the angle of control content file size and is cached
The validity of content, when even carrying out content update, the service time section inner region network redundancy capacity residing for system is less than pre-
If value, then capacity will be filtered out under the premise of considering user interest this when and be higher than the content of threshold value, then more paid close attention to and hold
Amount considers that emphatically capacity is higher than threshold value less than the content of threshold value in addition, when if service window network redundancy capacity is higher than preset value
Content be transmitted, and be used to alleviate the transmission pressure of backhaul network higher than the resource of threshold capacity in local cache；
The user characteristics extraction unit：The usage behavior of zone user is analyzed, the caching to region buffer unit is passed through
User's service condition of content is for statistical analysis, obtains zone user population statistics feature, calmodulin binding domain CaM position feature and area
Domain user group's statistical nature extracts user behavior characteristics；
The cache contents administrative unit：Cache contents in the buffer unit of region are managed, and being obtained from content source can
It is extracted in conjunction with user characteristics single with content list when needing the cache contents to region buffer unit to be cached and being updated
User behavior characteristics, the zone flow feature of traffic aware unit extraction and the making for region buffer unit spatial cache of member extraction
With situation, qualified content caching is chosen from content source according to preset contents selection strategy and be updated to region caching list
In member；
The region buffer unit：Use is fed back to for being cached to region content, and by user's service condition of cache contents
Family feature extraction unit carries out the extraction and update of user behavior characteristics for it.
2. a kind of caching method of the region content caching device towards inferior content distribution system, it is characterised in that：Described
A kind of region content caching device towards inferior content distribution system include traffic aware unit, user characteristics extraction unit,
Cache contents administrative unit, region buffer unit, wherein
The traffic aware unit：For counting region mobile network's flow service condition, and analyze zone flow feature；
The user characteristics extraction unit：The usage behavior of zone user is analyzed, the caching to region buffer unit is passed through
User's service condition of content is for statistical analysis, obtains zone user population statistics feature, calmodulin binding domain CaM position feature and area
Domain user group's statistical nature extracts user behavior characteristics；
The cache contents administrative unit：Cache contents in the buffer unit of region are managed, and being obtained from content source can
It is extracted in conjunction with user characteristics single with content list when needing the cache contents to region buffer unit to be cached and being updated
User behavior characteristics, the zone flow feature of traffic aware unit extraction and the making for region buffer unit spatial cache of member extraction
With situation, qualified content caching is chosen from content source according to preset contents selection strategy and be updated to region caching list
In member；
The region buffer unit：Use is fed back to for being cached to region content, and by user's service condition of cache contents
Family feature extraction unit carries out the extraction and update of user behavior characteristics for it；
By analyzing one's respective area mobile network data, the user behavior characteristics and flow of extract real-time region are special
Sign, the zone flow feature and area that the user behavior characteristics extracted in conjunction with user characteristics extraction unit, traffic aware unit extract
The service condition of domain buffer unit spatial cache chooses qualified content according to preset contents selection strategy from content source
It caches and is updated in the buffer unit of region.
3. a kind of caching side of region content caching device towards inferior content distribution system according to claim 2
Method, it is characterised in that include the following steps：
Step 1, traffic aware unit record region mobile network's flow service condition, and analyze zone flow feature；
Step 2, user characteristics extraction unit are united by user's service condition to the cache contents in the buffer unit of region
Meter analysis, obtains zone user population statistics feature, calmodulin binding domain CaM position feature and zone user population statistics feature extraction go out
User behavior characteristics；
Step 3, cache contents administrative unit obtain available content list from content source, and extracted in combination steps 1 and 2
The service condition of spatial cache in zone flow feature and user behavior characteristics and region buffer unit, from content list
Qualified content caching is chosen according to preset contents selection strategy and is updated to region buffer unit；
User's service condition of cache contents is fed back to user characteristics extraction unit for its progress by step 4, region buffer unit
The extraction and update of user behavior characteristics.
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| CN105656992B (en) * | 2015-12-25 | 2019-04-16 | 厦门大学 | A kind of content delivering apparatus and its method of the dissemination system towards inferior mobile content |
| CN105592154B (en) * | 2015-12-25 | 2019-06-25 | 厦门大学 | A kind of method for pushing of combination routine mobile content and inferior mobile content |
| CN109474664B (en) * | 2018-09-28 | 2020-09-25 | 北京邮电大学 | Active pre-caching method and device in heterogeneous wireless network |
| CN109347853B (en) * | 2018-11-07 | 2020-10-30 | 华东师范大学 | Deep packet analysis-based anomaly detection method for integrated electronic system |
| CN111314862B (en) * | 2020-02-19 | 2022-01-28 | 东南大学 | Caching method with recommendation under deep reinforcement learning in fog wireless access network |
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| CN103634736A (en) * | 2012-08-21 | 2014-03-12 | 北京友友天宇系统技术有限公司 | A hot news sharing method based on geographical information, an apparatus and a system |
| CN104050173A (en) * | 2013-03-12 | 2014-09-17 | 百度在线网络技术（北京）有限公司 | Method and system for constructing database for place semantic identification |
| CN104462336A (en) * | 2014-12-03 | 2015-03-25 | 北京国双科技有限公司 | Information pushing method and device |
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| US20140279863A1 (en) * | 2013-03-14 | 2014-09-18 | Hcl Technologies Ltd | Network context-based content positioning for OTT delivery |
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| CN103634736A (en) * | 2012-08-21 | 2014-03-12 | 北京友友天宇系统技术有限公司 | A hot news sharing method based on geographical information, an apparatus and a system |
| CN104050173A (en) * | 2013-03-12 | 2014-09-17 | 百度在线网络技术（北京）有限公司 | Method and system for constructing database for place semantic identification |
| CN104462336A (en) * | 2014-12-03 | 2015-03-25 | 北京国双科技有限公司 | Information pushing method and device |
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