CN105100276A - Regional content caching device for inferior content distribution system and regional content caching method for inferior content distribution system - Google Patents
Regional content caching device for inferior content distribution system and regional content caching method for inferior content distribution system Download PDFInfo
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- CN105100276A CN105100276A CN201510549692.XA CN201510549692A CN105100276A CN 105100276 A CN105100276 A CN 105100276A CN 201510549692 A CN201510549692 A CN 201510549692A CN 105100276 A CN105100276 A CN 105100276A
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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
- 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
- H04L67/55—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
Abstract
The invention provides a regional content caching device for an inferior content distribution system and a regional content caching method for the inferior content distribution system. The device extracts user behavior characteristics and flow characteristics of the region where the device is located by analyzing mobile network data in this region, and selects the content meeting the condition from a content source to cache and updates the content to a region caching unit by combining with a preset content selecting strategy. Because the cache of the regional content in the invention considers the factors such as regional user behavior characteristics, and a regional flow using condition, not only an overloaded phenomenon of the existing information is well avoided, but also the cached content could be transmitted successfully with relative large probability and accepted by a user while being transmitted to the user or a lower system by using an inferior communication channel based on redundant capacity. The device is low in charge and high in content integrating degree, thereby having excellent user experience. The device and the method of the invention could achieve the full use of network capacity and a caching space without influencing an original service of an operator to avoid the waste of a free resource.
Description
Technical field
The present invention relates to wireless communication technology field, relate to a kind of region content caching devices and methods therefor towards inferior content delivering system based on traffic aware.
Background technology
Along with the fast development of the Internet, the information sharp increase in network, people want to find, collect and safeguard that the informational needs needed for oneself spends a large amount of time and efforts, and " information overload " phenomenon is more and more serious.Content recommendation system is the effective scheme addressed this problem, and it is according to the feature of user, recommends the object of meeting consumers' demand, realizes personalized service.One of technology of information overload Internet era that content recommendation system being to solve; it is a branch of information filtering method; it is defined as a kind of by user characteristics modeling or based on community network; prediction user is to the preference of original project (as books, music, film etc.) or social factor (people or colony) and mark, and according to this scoring, user is made to method or the instrument of commending contents.Content recommendation system is different with traditional acquisition of information channel, the recommendation of the system that gets " initiatively " of user's " passive ", and in general, good commending system greatly can promote the experience of user.
Existing content recommendation system, mainly through analyzing the navigation patterns of user and browsing histories, carries out commending contents service after excavating the interest model of user.In user group's modeling, collaborative filtering recommending mode be also be based upon the user group finding out same interest characteristic basis on realize commending contents.But these content recommendation systems are considered less to geographical position residing for user or functional areas, and above-mentioned factor also produces certain influence by the content choice of user to a certain extent.
Present stage, because mobile radio access network capacity overall utilization is not high, cause have accumulated a large amount of redundancy capacities, as shown in Figure 1.The reason of this problem is caused to mainly contain two aspects.First, in specific region, the traffic demand of user often presents unbalanced phenomena on Annual distribution, and the traffic demand of peak time is usually far above average discharge demand; And on the other hand, in mobile communication system planning construction, in order to meet the reliability indexs such as call completing rate, the deployment of network capacity is the traffic demand based on peak period, and this must cause the appearance of " redundancy capacity " in a large number.Meanwhile, form dense network solve the growing traffic demand of user by numerous base station that distributes, improving user QoE is trend of the times.Following base station morphologically by towards the macro base station of more high-performance and integrated level, micro-base station, more flexibly distributed base station three kinds of future developments that volume is less, brings more selection and greater flexibility to carrier network construction.But base station miniaturization also means and will bring more network redundancy capacity for mobile communications network while being deployed in and promoting network capacity further.Therefore design a kind of value-added service project be based upon under existing redundant resource and there is certain prospect and feasibility.
Three classes are mainly contained at present: the first, be referred to as elasticity volume technology for the method solving network redundancy capacity problem, be conceived to adjust network capacity, as quick dormancy and the start-up technique of base station, but fundamentally could not promote traffic demand, be also the waste to network fixed investment (cost of frequency spectrum resource, infrastructure etc.); The second, be referred to as charging differentiation method, namely for some specific period or specific content, promote traffic demand with more preferential rate, but controllability be low, applicable surface is little; Three, radio infrastructure cloud is referred to as, namely on the network infrastructure such as wireless access network or bearer network, cloud clothes are directly disposed, nearby for local user provides calculating except communication and the service such as buffer memory, but effectively do not improve traffic demand for the flow unbalanced situation that distributes in time in essence.To sum up, existing method all can not solve mobile network's redundancy capacity problem effectively, the problem that particularly wireless access network capacity utilization is not high.
Summary of the invention
The object of the present invention is to provide a kind of region content caching devices and methods therefor towards inferior content delivering system, for the network traffics unbalanced situation that distributes in time, flow equalization scheme is proposed, can on the basis not affecting the original business of mobile communication carrier, effectively improve the utilance of wireless access network capacity, realize making full use of of network capacity and spatial cache, avoid the waste of network extra spare resource.
A kind of region content caching device towards inferior content delivering system of the present invention, comprises traffic aware unit, user characteristics extraction unit, cache contents administrative unit, region buffer unit, wherein,
This traffic aware unit: for adding up region mobile network's flow service condition, and analyze zone flow feature;
This user characteristics extraction unit: the usage behavior of zone user is analyzed, statistical analysis is carried out by user's service condition of the cache contents to region buffer unit, obtain zone user population statistics feature, calmodulin binding domain CaM position feature and the feature extraction of zone user population statistics go out user behavior feature;
This cache contents administrative unit: the cache contents in the buffer unit of region is managed, and from content source, obtain available content list, when needing the cache contents of region buffer unit is carried out to buffer memory and upgrades, in conjunction with user behavior feature, the zone flow feature of traffic aware unit extraction and the service condition of region buffer unit spatial cache that user characteristics extraction unit extracts, choose qualified content caching according to preset contents selection strategy from content source and be updated to the buffer unit of region;
This region buffer unit: for carrying out buffer memory to region content, and the extraction and the renewal that user's service condition of cache contents are fed back to user characteristics extraction unit carries out user behavior feature for it.
The caching method of described a kind of region content caching device towards inferior content delivering system, by analyzing one's respective area mobile network data, the user behavior feature of extract real-time region and traffic characteristic, in conjunction with user behavior feature, the zone flow feature of traffic aware unit extraction and the service condition of region buffer unit spatial cache that user characteristics extraction unit extracts, choose qualified content caching according to preset contents selection strategy from content source and be updated to the buffer unit of region.
Further, also comprise the 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 by carrying out statistical analysis to user's service condition of the cache contents in the buffer unit of region, obtain zone user population statistics feature, calmodulin binding domain CaM position feature and the feature extraction of zone user population statistics go out user behavior feature;
Step 3, cache contents administrative unit obtain available content list from content source, and the zone flow characteristic sum user behavior feature extracted in integrating step 1,2, and the service condition of spatial cache in the buffer unit of region, from content list, choose qualified content caching according to preset contents selection strategy and be updated to region buffer unit;
User's service condition of cache contents is fed back to user characteristics extraction unit carries out user behavior feature extraction and renewal for it by step 4, region buffer unit.
The present invention by analyzing region crowd's usage behavior characteristic and Local Area Network capacity service condition, select the content of the most applicable this region crowd and active cache in the buffer unit of region.The content of this buffer memory utilizes for secondary content distribution channels, and " secondary " here means to utilize the redundancy capacity of network to carry out content delivery.Strategy due to cache contents of the present invention with reference to the information of network traffics and " redundancy capacity ", and therefore the content of institute's buffer memory will be issued by " secondary " pipeline with greater probability, does not affect the use of conversational traffic flow simultaneously.Such as using the content source of region cache contents as content recommendation system, provide the commending contents service of low rate to user with this.Buffer memory due to region of the present invention content considers the factor such as zone user behavioural characteristic and zone flow service condition, this solves the phenomenon of " information overload " now well, when the content of buffer memory is sent to user or underlying system can with larger probability accept by user.The content of buffer memory of the present invention is undertaken promoting and issuing by modes such as propelling movements, also can allow user's active pull.From the angle of user, choose due to content the feature and user interest that consider region, and the content pushed and network redundancy capacity match, and can avoid causing network congestion, therefore there is the feature that rate are low, content compatible degree is high, therefore have good Consumer's Experience.
Apply system building of the present invention only to add additional functionality equipment on original base facility and can realize, avoid complexity, on a large scale network change, possess operability.The present invention can realize making full use of of network capacity and spatial cache on the basis not affecting the former business of operator, avoids the waste of idling-resource.
Accompanying drawing explanation
Fig. 1 is Radio Access Network redundancy capacity schematic diagram;
Fig. 2 is the fundamental diagram of region of the present invention content caching device;
Fig. 3 is the general plan schematic diagram of inferior content delivering system;
Fig. 4 is region buffer unit deployment way one schematic diagram in the present invention;
Fig. 5 is region buffer unit deployment way two schematic diagram in the present invention.
Below in conjunction with embodiment and accompanying drawing, the present invention is further described.
Embodiment
As shown in Figure 2, the present invention proposes a kind of region content caching device towards inferior content delivering system, comprises traffic aware unit 100, user characteristics extraction unit 200, cache contents administrative unit 300, region buffer unit 400, wherein,
This traffic aware unit 100: for adding up region mobile network's flow service condition, and analyze zone flow feature;
Traffic intensity by base station in monitored area realizes, such as adopt deep packet to resolve (DPI) technical monitoring origin base station traffic intensity from the Gn mouth (3G network) of core network or S1 mouth (4G network), or by base-station gateway, the conventional flow in base station is directly monitored and added up; Described field capacity statistical property obtains by following the tracks of and drawing the conventional flow changing curve in base station; As shown in Figure 1, curve is conventional changes in flow rate situation in this period, red line is channel capacity, therefore white portion is redundancy capacity situation of change, the division of time granularity was determined according to the update cycle of region content, traffic aware unit 100 is by carrying out feature extraction to this flow changing curve, just Different periods region redundancy capacity statistical nature can be drawn, this zone flow statistical nature, using the part reference frame as region cache contents, promotes the validity of cache contents from the angle controlling content file size;
This user characteristics extraction unit 200: the usage behavior of zone user is analyzed, statistical analysis is carried out by user's service condition of the cache contents to region buffer unit 400, obtain area peripheral edge user group statistical nature, calmodulin binding domain CaM position feature and the feature extraction of zone user population statistics go out user behavior feature, described regional location is characterized as affiliated area functional areas type, such as shopping centre, school, residential block etc., residing different functional areas also will have an impact to the service usage behavior of zone user to a certain extent; Described zone user behavioural characteristic can reflect behavioural habits and the point of interest place of this zone user colony;
This cache contents administrative unit 300: the cache contents in the buffer unit of region is managed, and available content list is obtained from content source 500, when needs upgrade region buffer unit 400 cache contents, by the zone flow feature that the zone user behavioural characteristic extracted in conjunction with user characteristics extraction unit 200 and traffic aware unit 100 extract, according to region buffer unit 400 spatial cache size, choose qualified content caching according to preset contents selection strategy from content source 500 and be updated to region buffer unit 400;
Region buffer unit 400: for carrying out buffer memory to region content, be generally memory device, be deployed in wireless access network place, be responsible for user's service condition of cache contents in region buffer unit 400 being fed back to user characteristics extraction unit 200 carries out user behavior feature extraction and renewal for it.
As shown in Figure 2, a kind of region content buffering method towards inferior content delivering system of the present invention, by analyzing one's respective area mobile network data, the user behavior feature of extract real-time region and traffic characteristic, choose qualified content caching in conjunction with preset contents selection strategy from content source 500 and be updated to region buffer unit 400; Specifically comprise the steps:
Step 1, traffic aware unit 100 record region mobile network's flow service condition, and analyze zone flow feature;
Traffic aware unit 100 of the present invention records and feedback areas redundancy capacity scatter chart, as shown in Figure 1, the selection of time scale should carry out the cutting granularity of Subdivision Curves figure time shaft according to real system content update frequency.If section inner region redundancy capacity service time when carrying out content update residing for system is lower, then this time is by larger for filtration capacity under the prerequisite considering user interest content such as video, audio frequency etc., then more pay close attention to the little content of capacity, the such as information such as text, picture, thus prevent from causing system to block up, affect Consumer's Experience (QoE), time serious, also may cause the impact on regular service.In addition, if when service window network redundancy capacity is well-to-do, can consider emphatically that the content that capacity is larger is transmitted, and makes full use of available resources.Also the transmission pressure alleviating backhaul network is contributed in addition in the resource of local cache larger capacity;
Step 2, user characteristics extraction unit 200 are by carrying out statistical analysis to user's service condition of cache contents in region buffer unit 400, obtain area peripheral edge user group statistical nature, calmodulin binding domain CaM position feature and the feature extraction of zone user population statistics go out user behavior feature;
This user characteristics extraction unit 200 first can obtain the IP of each base station in range of management at initial phase, obtain origin base station topology diagram simultaneously, obtain the regional location feature in region residing for base station in conjunction with map according to its position coordinates, its point of interest of user group or the service usage behavior that are in different specification area are usually also different, know fixed point input and guiding that region residing for base station also more efficientlyly can realize promotional content simultaneously, improve content and promote to power;
Step 3, cache contents administrative unit 300 obtain available content list [3-1] from content source 500, and the zone flow characteristic sum user behavior feature extracted in integrating step 1,2, and the service condition [3-2] of spatial cache in region buffer unit 400, from content list, choose qualified content caching according to preset contents selection strategy and be updated to [3-3] in region buffer unit 400;
User's service condition of step 4, region buffer unit 400 pairs of cache contents is added up, and feeds back to user characteristics extraction unit 200 carries out user behavior feature extraction and renewal for it.
As shown in Figure 3, of the present inventionly towards inferior content delivering system, deployment region is divided into 3 parts, is respectively wireless access network, core net and outer net.
Region buffer unit 400 is deployed in wireless access network place, and content is directly sent to subscriber equipment by base station single-hop or for other secondary services.As shown in Figure 4 and Figure 5, can be each base station deployment region buffer unit 400, also can have a region buffer unit 400 in multiple base station, determine according to set region scale.
User characteristics extraction unit 200, cache contents administrative unit 300 all can be deployed in outer net, core net place carries out centralized management to each control area, so not only be conducive to unified allocation of resources and the management of resource, also can by the computational load transfer on subscriber equipment or on base station on outer net or the infrastructure of core net, the service performance of equipment is secure.Another kind of mode, can user characteristics extraction unit 200 be deployed in the wireless access network of communication network, adopt distributed management mode, the advantage of which is: due to the very big shrink of computing equipment and buffer memory device cost, set up in base station computing unit suitably can alleviate the calculating pressure of core network, there is certain values and feasibility.When obtaining zone user end use cache contents information according to additional application (APP), the direct communication with user side of user characteristics extraction unit 200 that passage is deployed in wireless access network can be avoided consuming this just rare back haul link bandwidth of core net simultaneously.
Traffic aware unit 100 can be deployed in each base station of wireless access network, directly obtained by base-station gateway and count region redundancy capacity situation, also can be deployed in network core place and obtain Local Area Network redundancy capacity situation by deep packet parsing (DPI) technical monitoring Gn mouth data.
Of the present inventionly to focus on, calmodulin binding domain CaM user habit needs range of summation redundant flow distribution character, according to preset contents selection scheme choose from content source meet zone user use habit and zone flow distribution situation content buffer memory in limited local cache space.To distribute in time unbalanced situation for network traffics, realize on the basis not affecting the former business of operator, effectively improve wireless access network capacity utilization, realize making full use of of network capacity and spatial cache, avoid the waste of network extra spare resource.
The foregoing is only better enforcement use-case of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1., towards a region content caching device for inferior content delivering system, it is characterized in that comprising traffic aware unit, user characteristics extraction unit, cache contents administrative unit, region buffer unit, wherein,
This traffic aware unit: for adding up region mobile network's flow service condition, and analyze zone flow feature;
This user characteristics extraction unit: the usage behavior of zone user is analyzed, statistical analysis is carried out by user's service condition of the cache contents to region buffer unit, obtain zone user population statistics feature, calmodulin binding domain CaM position feature and the feature extraction of zone user population statistics go out user behavior feature;
This cache contents administrative unit: the cache contents in the buffer unit of region is managed, and from content source, obtain available content list, when needing the cache contents of region buffer unit is carried out to buffer memory and upgrades, in conjunction with user behavior feature, the zone flow feature of traffic aware unit extraction and the service condition of region buffer unit spatial cache that user characteristics extraction unit extracts, choose qualified content caching according to preset contents selection strategy from content source and be updated to the buffer unit of region;
This region buffer unit: for carrying out buffer memory to region content, and the extraction and the renewal that user's service condition of cache contents are fed back to user characteristics extraction unit carries out user behavior feature for it.
2. the caching method of a kind of region content caching device towards inferior content delivering system according to claim 1, it is characterized in that: by analyzing one's respective area mobile network data, the user behavior feature of extract real-time region and traffic characteristic, in conjunction with user behavior feature, the zone flow feature of traffic aware unit extraction and the service condition of region buffer unit spatial cache that user characteristics extraction unit extracts, choose qualified content caching according to preset contents selection strategy from content source and be updated to the buffer unit of region.
3. the caching method of a kind of region content caching device towards inferior content delivering system according to claim 2, is characterized in that comprising the 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 by carrying out statistical analysis to user's service condition of the cache contents in the buffer unit of region, obtain zone user population statistics feature, calmodulin binding domain CaM position feature and the feature extraction of zone user population statistics go out user behavior feature;
Step 3, cache contents administrative unit obtain available content list from content source, and the zone flow characteristic sum user behavior feature extracted in integrating step 1,2, and the service condition of spatial cache in the buffer unit of region, from content list, choose qualified content caching according to preset contents selection strategy and be updated to region buffer unit;
User's service condition of cache contents is fed back to user characteristics extraction unit carries out user behavior feature extraction and renewal for it by step 4, region buffer unit.
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