WO2013010451A1 - 缓存数据热度值的同步方法、分布缓存方法、装置及系统 - Google Patents

缓存数据热度值的同步方法、分布缓存方法、装置及系统 Download PDF

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Publication number
WO2013010451A1
WO2013010451A1 PCT/CN2012/078499 CN2012078499W WO2013010451A1 WO 2013010451 A1 WO2013010451 A1 WO 2013010451A1 CN 2012078499 W CN2012078499 W CN 2012078499W WO 2013010451 A1 WO2013010451 A1 WO 2013010451A1
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Prior art keywords
base station
packet domain
domain service
cache
cached
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PCT/CN2012/078499
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English (en)
French (fr)
Inventor
魏巍
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2014519395A priority Critical patent/JP6071150B2/ja
Priority to EP12814835.0A priority patent/EP2713649B1/en
Priority to BR112014001028-5A priority patent/BR112014001028B1/pt
Priority to KR1020147000341A priority patent/KR101541259B1/ko
Publication of WO2013010451A1 publication Critical patent/WO2013010451A1/zh
Priority to US14/154,749 priority patent/US9326261B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
    • 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
    • H04L67/2866—Architectures; Arrangements
    • H04L67/288—Distributed intermediate devices, i.e. intermediate devices for interaction with other intermediate devices on the same level
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Definitions

  • Synchronization method for buffering data heat value, distribution buffer method, device and system The present application claims to be submitted to the Chinese Patent Office on July 15, 2011, the application number is 201110199469.9, and the invention name is "synchronization method for cache data popularity value, distributed cache method" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.
  • the present invention relates to the field of wireless communication technologies, and in particular, to a method for synchronizing distributed cache data popularity values, a method, device and system for co-distributing cache data. Background technique
  • a cache can be deployed in a Radio Network Controller (RNC) or in a Node B.
  • RNC Radio Network Controller
  • the local storage medium and the hot information need to be deployed on the RNC.
  • the RNC parses the application layer data packet and locally caches the content that satisfies the cached decision condition.
  • the RNC is responsible for maintaining the cached content and the hotness does not reach the threshold. Content, but subsequent it is also possible to cache resource heat information.
  • the capacity of the local storage medium deployed by the RNC is the maximum capacity of the Cache.
  • the Cache service can be unloaded in conjunction with the local traffic, that is, the RNC will not need to go through the Gi network to uninstall the service traffic of the external network packet data service (PS, Packet Service) through the core network, and directly send it to the corresponding service provider (SP, Service Provider).
  • PS external network packet data service
  • SP Service Provider
  • the content accessed by the user equipment is already cached on the RNC, the content can be directly extracted from the local storage medium of the RNC, and the content is reversed to the user equipment, which saves the IU port and subsequent transmission network bandwidth, and reduces user equipment access. Delay.
  • the Cache deployment in the RNC cannot save the IUB port transmission bandwidth; it is also not conducive to the smooth upgrade of the UMTS network to LTE.
  • the NodeB needs to determine whether the content accessed by the user equipment can be locally cached, and the PS user equipment needs to be moved down to the NodeB.
  • Cache The service can also be combined with the local traffic offloading technology.
  • the NodeB is out of the Gi port, and the PS service of the Xipu network is offloaded through the Gi port and directly transmitted to the corresponding SP, which saves the transmission bandwidth of the IUB port and the subsequent network.
  • NodeB is closer to the edge of the network, a single NodeB has a limited number of user equipment coverage and a low hit rate, which is only suitable for indoor coverage and low mobile scenes.
  • user equipments that are covered by different NodeBs may access the same hotspot content, causing the same hotspot content to be cached in multiple NodeBs, causing unified content to occupy cache resources of multiple NodeBs.
  • the inventors of the present invention have found that, in the existing implementation manner, whether the Cache is deployed on the RNC or the NodeB, the Cache information is managed within a single network element, and a single network element is The storage space that can be mounted is limited. At the same time, if the Cache is deployed on the RNC, it is not conducive to smooth upgrade to LTE, and the transmission bandwidth of the IUB port cannot be saved. If it is deployed on the NodeB, the number of coverage users is limited, and the hit rate is low. It is only suitable for indoor coverage and low mobility. In the scenario, different NodeBs may repeatedly cache the same resource and cannot share within the network. Summary of the invention
  • the embodiments of the present invention provide a method, a device, and a system for synchronizing distributed cache data popularity values, so as to solve the technical problem that the cache data sharing in the network cannot be implemented in the prior art.
  • Embodiments of the present invention provide a method for co-distributing cached data, a method for co-distributing cached data, a device, and a system for saving the transmission bandwidth of the IUB port.
  • an embodiment of the present invention provides a method for synchronizing distributed cache data popularity values, which is applied to a radio access network, where the radio access network includes a heat information synchronization node and the heat information synchronization node.
  • the base station where the cache for storing the hot content is distributed and deployed to the base station, the method includes:
  • the first base station When the current heat value of the packet domain service is added to the preset threshold, the first base station sends the current heat value of the packet domain service to the heat information synchronization node for synchronization, and Clearing the current heat value of the first base station locally cached.
  • the embodiment of the present invention further provides a method for co-distributing cached data, which is applied to a radio access network, where the radio access network includes a heat information synchronization node and a base station managed by the heat information synchronization node, and the method includes :
  • the heat information synchronization node updates the heat value corresponding to the packet domain service in the cached content list according to the request.
  • the embodiment of the present invention further provides a synchronization device for synchronizing cached data popularity values, which is applied to a radio access network, where the radio access network includes a heat information synchronization node and a base station managed by the heat information synchronization node.
  • the cache for storing the hot content is distributed to the base station, and the device includes:
  • a first receiving unit configured to receive a request for the user equipment to access the packet domain service
  • a determining unit configured to determine, according to the request of the packet domain service, whether the packet domain service is cached locally, and send a determination result
  • a first sending unit configured to send the packet domain service to the user equipment when receiving a determination result of yes
  • a first accumulating unit configured to: when receiving the judgment result of the yes, increase a current heat value of the packet domain service according to a preset function in a local cache content list of the first base station of the radio access network;
  • a synchronization unit configured to: when a current heat value of the packet domain service is added to a preset threshold, send a current heat value of the packet domain service to the heat information synchronization node for synchronization, and synchronize the first base station The current cached local heat value is cleared.
  • the embodiment of the present invention further provides a cooperative distribution buffering device for buffering data, which is applied to a wireless access network, where the wireless access network includes a heat information synchronization node and a base station managed by the heat information synchronization node, and includes:
  • a first receiving unit configured to receive, by the at least one first base station of the radio access network, a request for sending a synchronization packet domain service popularity value
  • a synchronization unit configured to update, according to the request, a heat value corresponding to the packet domain service in the cached content list.
  • the embodiment of the invention further provides a synchronization system for distributing cached data popularity values, including heat At least one base station managed by the degree information synchronization node and the heat information synchronization node, the base station includes the synchronization device for the cache data heat value, and the heat information synchronization node includes a coordinated distribution cache device for cache data.
  • FIG. 1 is a flow chart of a method for synchronizing cache data popularity values according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a method for co-distributing cached data cache according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a synchronization device for cache data heat value according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a cooperative distribution cache device for cache data according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a synchronization system for cache data heat value according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 3 of the present invention.
  • FIG. 9 is a schematic structural diagram of a synchronization system for cache data heat value according to Embodiment 4 of the present invention
  • FIG. 10 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 5 of the present invention
  • FIG. 11 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 6 of the present invention.
  • FIG. 12 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 7 of the present invention. detailed description
  • the UMTS network is taken as an example for description.
  • the radio access network RAN is composed of a NodeB and an RNC.
  • the cache Cache for storing hot content is distributed and distributed in multiple NodeBs under the control of the RNC.
  • the NodeB and the RNC can cooperate with the Cache, and the heat information of the user access content is uniformly maintained by the hot information synchronization node.
  • the heat information synchronization node may be a central control base station or an RNC. In this embodiment, the heat information synchronization node is an RNC.
  • a physical link is established between the NodeBs of the RNC and corresponding signaling is added to form a network including the RNC and the subordinate NodeB, for mutually transferring the cached file and its storage location on the UTRAN side.
  • the connection between the NodeB and the NodeB can be an IP connection, and the network topology between the NodeB and the NodeB can be a star, or a ring structure.
  • each NodeB side can maintain only one table, that is, the URL and local heat of the Cache content of the NodeB; the RNC can maintain three tables, and one is a list of current heat and storage locations of the Cache contents of each NodeB.
  • the second is the warm-up content heat record, that is, the content that the user has visited, but the heat does not reach the Cache threshold; the third is the contract Cache content maintenance table, that is, the contract SP specifies the content list that needs to be cached.
  • the RNC needs to synchronize with the RNC.
  • the RNC accumulates the heat in the Cache Content Maintenance Table. After the synchronization, the NodeB local heat is cleared.
  • the adoption of the distributed Cache does not require the RNC to cache a large amount of resource data, but only needs to cache three lists, which greatly saves the storage space of the RNC, and distributes the content cache to each NodeB, which is equivalent to the total storage energy.
  • RNC acts as the central control network element of the Cache network. It has a small impact on the existing system.
  • the normal UMTS network is upgraded to the Cache network.
  • RNC is hard.
  • the UMTS Cache network is upgraded to LTE, and the existing solution will not be affected by the flattening of the network. Only the three lists stored by the RNC need to be maintained in the new central control network element.
  • the RNC only needs to maintain three tables to manage the entire network Cache content.
  • the classification and search order of these three tables enables the RNC to schedule the Cache network as quickly as possible.
  • the content of each NodeB cache in the network can provide Cache services for all users covered by NodeBs on the network, which can greatly improve the Cache hit rate.
  • the hit rate can also be guaranteed in the mobility scenario.
  • FIG. 1 is a flowchart of a method for synchronizing distributed cache data popularity values according to an embodiment of the present invention, where the method is applied to a wireless connection composed of a base station controller and a base station managed by the base station controller.
  • the cache for storing the hot content is distributed and distributed to the multiple base stations, and the method includes:
  • Step 101 The first base station receives a request for the user equipment to access the packet domain service, where the packet domain service, such as webpage content, is not limited thereto.
  • Step 102 responsive to the request of the packet domain service, if the first base station determines that the packet domain service is buffered locally, sending the packet domain service to the user equipment, and at the first base station Adding a current heat value of the packet domain service according to a preset function in the local cache content list;
  • the locally cached content list is used by the base station to maintain the hot value of the locally cached content.
  • it may be a uniform resource identifier and local heat of the content cached by the base station.
  • Step 103 When the current heat value of the packet domain service is added to the preset threshold, the first base station sends the current heat value of the packet domain service to the heat information synchronization node in the radio access network. Synchronizing, and clearing the current heat value of the first base station local cache.
  • the method may further include: if the first base station determines that the packet domain service is not cached locally, the cached content list, the subscription content list, or the warm-up maintained by the hot information synchronization node
  • the content list obtains the location information of the packet domain service, and obtains the packet domain service from the base station or the service provider corresponding to the location information, and sends the obtained packet domain service to the user equipment.
  • the method may further include: the first base station sends a request for allocating a cache node to the heat information synchronization node; the first base station receives a response of the heat information synchronization node, and the response carries a And the first base station sends the packet domain service to the second base station according to the location information, so that the first base station allocates the location information of the second base station that is allocated by the heat information synchronization node; The second base station buffers the packet domain service and updates the current heat value of the packet domain service according to a preset function.
  • the method may further include: the first base station sends a request for deleting the cached content to the heat information synchronization node; and the first base station receives the response of the heat information synchronization node to send and delete the cached content; The first base station deletes the packet domain service of the locally cached content according to the response of deleting the cached content.
  • the heat information synchronization node is a central control base station or a base station controller to which the base station belongs.
  • the base station receives a request for the user equipment to access the packet domain service; if the base station determines that the packet domain service is cached locally, the base station domain service is sent to the user equipment, and the local cache content list is preset according to the preset
  • the function increases the current heat value of the packet domain service; when the current heat value of the packet domain service is added to a preset threshold, the base station sends the current heat value to the radio network controller or the central control base station. Synchronize and clear the current heat value.
  • the method may further include: if the base station determines that the packet domain service is not recorded in the local cache content list, the radio network controller (RNC) or the central control base station (HUB NodeB)
  • the maintained cached content list, the subscription content list, or the warm-up content list obtains location information of the packet domain service, obtains the packet domain service from a base station or a service provider corresponding to the location information, and acquires
  • the packet domain service is sent to the user equipment, where the cached content list includes: a resource name, a current heat, and a storage location of the packet domain service; the subscription content list includes: a subscription resource;
  • the content list includes the resource name and the current heat; specifically includes the following situation: if the base station determines that the packet domain service is not recorded in the local cache content list, the cache is obtained from the cached content list of the radio network controller or the central control base station.
  • Describe the IP address pair Acquiring the packet domain service in the base station includes: acquiring the packet domain service from the base station corresponding to the IP address by using the established IP link; or obtaining the IP address from the radio network controller or the central control base station Acquiring the packet domain service in the corresponding base station;
  • the location information (ie, the IP address) of the packet domain service may be obtained from the subscription content list of the radio network controller or the central control base station, And the packet domain service is subscription information; and the packet domain service is obtained from a service provider corresponding to the location information, the packet domain service is cached locally, and the subscription information is added to the local cache content list. Transmitting the packet domain service to the user equipment;
  • the location information of the packet domain service is not obtained from the cached content list of the radio network controller or the central control base station, and the wireless device is obtained from the wireless
  • the subscription content list of the network controller or the central control base station can obtain location information for buffering the packet domain service, and the packet domain service is subscription information; cache the subscription information into a local cache content list, and Obtaining the packet domain service from a service provider corresponding to the location information, and sending the packet domain service to the user equipment, and locally buffering the packet domain service;
  • the location information of the packet domain service is not obtained from the cached content list and the subscription content list of the radio network controller or the central control base station.
  • Obtaining the location information of the service provider storing the packet domain service and the information that the current heat value of the packet domain service meets a preset threshold from the warm-up content list of the radio network controller or the central control base station After the packet domain service is obtained from the service provider, the obtained packet domain service is sent to the user equipment; and the packet domain service is cached locally, and the content list is cached locally.
  • the base station acquires the location information of the service provider that stores the packet domain service from the warm-up content list of the radio network controller or the central control base station, and the current heat value does not meet the preset threshold.
  • Information after obtaining the packet domain service from the service provider, directly sending the packet domain service to the office User equipment.
  • the user equipment obtains the packet domain service from the base station, and the subscription information is stored in the RNC in the subscription content list.
  • the so-called subscription information indicates that the content of the webpage needs to be cached, and the subscription content list is recorded.
  • the method may further include:
  • the base station sends a notification that the entry of the local cached content list is full to the radio network controller or the central control base station;
  • the base station sends the packet domain service to the base station corresponding to the location information by using a pre-established IP link, so that the base station records the packet domain service into a local cache content list, and the packet domain service is The current heat value is increased by 1.
  • the base station (NodeB) reaches a certain threshold value for the cached content, it needs to synchronize with the radio network controller (RNC), so that the RNC accumulates and synchronizes the heat value in the cached content list. After that, the NodeB's heat value in the local cached content list is cleared. That is to say, the distributed Cache is used in this embodiment, so that the RNC does not need to cache a large amount of resource data, which greatly saves the storage space of the RNC, and distributes the content cache to each NodeB to share, which is equivalent to the total storage energy.
  • the extension solves the technical problem of duplicate buffering of the same resource and realizes coexistence in the network.
  • FIG. 2 it is a flowchart of a method for co-distributing cached data according to an embodiment of the present invention, where the method includes:
  • Step 201 The heat information synchronization node receives a request for the synchronization packet domain service popularity value sent by the first base station, where the packet domain service is, for example, webpage content.
  • the heat information synchronization node may also receive the request of the synchronization packet domain service popularity value sent by multiple base stations at the same time.
  • Step 202 The heat information synchronization node updates the heat value corresponding to the packet domain service in the cached content list according to the request.
  • the method may further include: if the hotness of the packet domain service does not reach a preset cache threshold, the hot information synchronization node updates a current heat of the packet domain service in the warm-up content list, and Notifying the first base station not to cache the packet domain service.
  • the method may further include: the heat information synchronization node receives a request for allocating a cache node sent by the first base station; and the heat information synchronization node queries the maintained cached content list, the subscription content list, or Whether the warm-up content list includes the location record of the packet domain service in the subscription content list or the warm-up content list, and the packet domain service is If the heat value reaches the buffer threshold, determining location information of the second base station, sending a response to the first base station, where the response carries location information of the second base station; and the heat information synchronization node is in the cached content list A record of the location of the second base station is added.
  • the hot information synchronization node may be a radio network controller or a central control base station to which the base station belongs.
  • the method may further include:
  • the radio network controller or the central control base station queries the cached content list
  • the radio network controller or the central control base station queries the location record of the packet domain service from the cached content list, the location information of the base station that caches the packet domain service is sent to the base station, and the The heat value of the packet domain service is increased by 1;
  • the radio network controller or the central control base station does not query the record of the packet domain service from the cached content list, query the subscription content list, if the location record of the packet domain service is cached from the subscription content list And sending the location information of the query to the cache packet domain service to the base station cache, and adding the queried packet domain service and location information of the base station that caches the packet domain service to the cached content list. And marking the current hotness of the packet domain service to 0;
  • the radio network controller or the central control base station does not query the location record of the packet domain service from the subscription content list, query the warm-up content list, if the packet domain is not cached from the warm-up content list a location record of the service, notifying the base station that the location information of the packet domain service is not queried, and adding, in the warm-up content list, a location record that is not queried to cache the packet domain service, and the packet domain service is The current heat record is 1; if the radio network controller or the central control base station queries the location record of the packet domain service from the warm-up content list, and the heat value of the packet domain service reaches a preset cache. At the threshold, the base station is notified to buffer location information of the service provider of the packet domain service, so that the base station locally caches the packet domain service acquired from the service provider.
  • the method may further include:
  • the radio network controller or the central control base station determines that the hotspot value of the packet domain service does not reach the preset cache threshold, updating the current heat of the packet domain service in the warm-up content list, and notifying the base station that the cache is not used.
  • the packet domain service is not used.
  • the method may further include:
  • the radio network controller or the central control base station receives a notification that one or more base stations send the entries of the local cache content list to be full;
  • the wireless network controller or the central control base station respectively queries whether the maintained cached content list, the subscription content list, or the warm-up content list includes the packet domain service;
  • the radio network controller or the central control base station queries, in the subscription content list or the warm-up content list, a location (such as an IP address, etc.) that caches the packet domain service, and the hotspot value of accessing the packet domain service is reached.
  • the buffer threshold is obtained, and the remaining space of the buffers of all the base stations except the base station that sends the access to the packet domain service request is obtained, and the remaining buffer space is selected from all the base stations, and is smaller than the base station that sends the request for querying the packet domain service.
  • a near base station buffers the packet domain traffic and transmits the location of the selected base station; and adds a record of the location of the base station to the cached content list.
  • the method may further include:
  • the wireless network controller or the central control base station After the wireless network controller or the central control base station acquires the remaining space of the cache of all the base stations except the base station that sends the access to the packet domain service request, if the cache space is inappropriate, the terminal cache content list is selected.
  • the cached content that is relatively low in heat, notifying the base station to delete the cached content with relatively low popularity from the locally cached content list, and buffering the queried packet domain service in the deleted local cached content list. .
  • the NodeB and the RNC cooperate with the Cache to apply the distributed storage idea to the wireless network, that is, the heat information of the user equipment accessing the packet domain service is maintained on the RNC side, and the local Cache distributed deployment of the hot content is performed.
  • the NodeBs under the jurisdiction of the RNC.
  • a new IP link is newly established between the NodeBs of the RNC and corresponding signaling is added to form a mesh network including the RNC and the subordinate NodeB, for mutually transferring the cached file and its storage location on the UTRAN side.
  • RNC needs to maintain three tables, one is the current heat and storage location of each NodeB cached content, that is, the list of cached content (including resource name and current heat and storage location), and second, the list of warmed up content (including the resource name and current heat), used to record the heat record of the warm-up content, that is, the content that the user equipment has visited but the heat has not reached the Cache threshold; the third is to sign the cached content table (including the contracted resource), or sign the Cache.
  • the content maintenance table that is, the contract SP specifies the content list that needs to be cached.
  • the RNC does not need to cache a large amount of resource data, but only needs to cache three lists, which greatly saves the RNC storage space, and distributes the content cache to each NodeB to share, which is equivalent to the total storage energy.
  • the RNC has a small impact on the existing system.
  • the normal UMTS network is upgraded to the Cache network.
  • the RNC hardware does not need to be modified.
  • the subsequent UMTS Cache network is upgraded to LTE, and the network will not be flattened.
  • the existing solution has an impact. It only needs to maintain the three lists stored by the RNC in the new central control network element.
  • the RNC only needs to maintain three tables to manage the entire network Cache content.
  • the classification and search order of these three tables enables the RNC to schedule the Cache network as quickly as possible.
  • the content cached by each NodeB in the network can provide Cache services for user equipment covered by all NodeBs in the network, which can greatly improve the Cache hit rate.
  • the hit rate can also be guaranteed in the mobility scenario. .
  • a central control base station (HUB NodeB) can be set between the base station and the radio network controller, that is, the work of the heat aggregation is deployed on the HUB NodeB, and is recorded. Data exchange is performed between each NodeB through the HUB NodeB. It can also achieve the purpose of saving the transmission bandwidth of the IUB port, and supports the smooth upgrade to the LTE system.
  • the specific implementation process is similar to the above process. For details, refer to the above, and no further details are provided here.
  • the embodiment of the present invention further provides a synchronization device for cache data heat value, and a schematic structural diagram thereof is shown in FIG. 3, the device includes: a first receiving unit 31, a determining unit 32, a first sending unit 33, The first accumulation unit 34 and the synchronization unit 35.
  • the first receiving unit 31 is configured to receive a request for the user equipment to access the packet domain service, and the determining unit 32 is configured to determine whether the packet domain service is recorded in the local cache content list, and send the determination result;
  • the local cache content list includes a resource name and a local heat;
  • the first sending unit 33 And the method for sending the packet domain service to the user equipment when receiving the determination result of the yes;
  • the first accumulating unit 34 configured to accumulate the packet domain service when receiving the determination result of yes
  • the synchronization unit 35 is configured to: when the accumulated current heat value reaches a preset threshold, send the current heat value to the radio network controller or the central control base station for synchronization, and clear the current heat value. .
  • the device may further include: an acquiring unit, configured to: the cached content list and the subscription content maintained by the radio network controller or the central control base station when receiving the determination result of the no The list or the warm-up content list obtains the location information of the packet domain service, and obtains the packet domain service from the base station or the service provider corresponding to the location information; the first sending unit is further configured to acquire The packet domain service is sent to the user equipment.
  • an acquiring unit configured to: the cached content list and the subscription content maintained by the radio network controller or the central control base station when receiving the determination result of the no The list or the warm-up content list obtains the location information of the packet domain service, and obtains the packet domain service from the base station or the service provider corresponding to the location information
  • the first sending unit is further configured to acquire The packet domain service is sent to the user equipment.
  • the acquiring unit includes: a location information acquiring unit and a first packet domain service acquiring unit, where the location information acquiring unit is configured to: when receiving the packet domain service, if the local area is not cached locally, Acquiring, by the network controller or the cached content list of the central control base station, the location information of the packet domain service; the first packet domain service obtaining unit, configured to acquire the packet domain from the base station corresponding to the location information
  • the first sending unit is further configured to send the obtained packet domain service to the user equipment.
  • the first packet domain service obtaining unit includes: a direct acquiring unit, and/or an indirect obtaining unit, where the direct acquiring unit is configured to use the established IP link from the location information (such as IP) Obtaining the packet domain service in the corresponding base station; the indirect obtaining unit is configured to acquire the packet domain service from the base station corresponding to the location information by using a radio network controller or a central control base station.
  • the direct acquiring unit is configured to use the established IP link from the location information (such as IP) Obtaining the packet domain service in the corresponding base station
  • the indirect obtaining unit is configured to acquire the packet domain service from the base station corresponding to the location information by using a radio network controller or a central control base station.
  • the acquiring unit may further include: a second packet domain service acquiring unit and a first buffering unit, where the second packet domain service acquiring unit is configured to be used from a radio network controller or
  • the location information of the packet domain service can be obtained in the subscription content list of the central control base station, and the packet domain service is subscription information, and the packet domain service is obtained from the service provider corresponding to the location information;
  • a first cache unit configured to cache the packet domain service to the local area, and add the obtained subscription information to the local cache content list
  • the first sending unit is further configured to send the obtained packet domain service to the user equipment.
  • the obtaining unit may further include: a third packet domain service obtaining unit and a second buffering unit, where the third packet domain service acquiring unit is configured to not cache the localized domain domain service Locating the location information of the packet domain service from the cached content list of the radio network controller or the central control base station, and obtaining the cache location from the subscription content list of the radio network controller or the central control base station.
  • the location information of the packet domain service, where the packet domain service is subscription information, and the webpage is obtained from the service provider corresponding to the location information;
  • the second cache unit is configured to use the packet domain
  • the service is cached locally, and the obtained subscription information is added to the local cache content list.
  • the first sending unit is further configured to send the obtained packet domain service to the user equipment.
  • the acquiring unit may further include: a first service provider address obtaining unit, a fourth packet domain service acquiring unit, and a third buffering unit; and/or a second service provider address obtaining unit and a fifth packet domain.
  • a service obtaining unit where the first server address obtaining unit is configured to: when the packet domain service is not cached locally, the cached content list and the subscription content list from the radio network controller or the central control base station The location information of the service provider that caches the packet domain service is obtained from the warm-up content list of the radio network controller or the central control base station, and the location information of the service provider that caches the packet domain service is obtained.
  • the information that the current heat value of the packet domain service meets the preset threshold; the fourth packet domain service acquiring unit is configured to obtain the packet domain service from the service provider; and the third cache unit is configured to: The obtained packet domain service is cached locally, and a record is added to the local cached content list; the second service provider An address obtaining unit, configured to acquire, from the warm-up content list of the radio network controller or the central control base station, location information of a service provider that stores the packet domain service when the packet domain service is not cached locally And the information that the current heat value of the packet domain service does not meet the preset threshold; the fifth packet domain service acquiring unit is configured to obtain the packet domain service from the service provider; And sending the packet domain service to the user equipment.
  • the device may further include: a second sending unit, a second sending unit, and a third sending unit, where the second sending unit is configured to send, to the radio network controller or the central control base station, a notification that the entry of the local cached content list is full; a receiving unit, configured to receive location information of a base station that can be used by the radio network controller or the central control base station to buffer the packet domain service, where the The base station of the packet domain service is larger in the buffer space and is closer to the base station where the entry of the local cache content list is full.
  • the third sending unit is configured to send the packet domain service to the pre-established IP link. And the base station corresponding to the location information, so that the base station records the packet domain service into a local cache content list, and adds a current heat value of the packet domain service to 1.
  • the device may further include: a third sending unit, a third receiving unit, a deleting unit, a fourth buffering unit, and a second accumulating unit, wherein the third sending unit is configured to send a table of the locally cached content list to the radio network controller or the central control base station
  • the third receiving unit is configured to receive a command sent by the radio network controller or the central control base station to delete the packet domain service with lower heat in the local cache content list
  • the deleting unit is configured to: The command deletes a packet domain service with a relatively low popularity in the locally cached content list
  • the fourth cache unit is configured to cache the packet domain service in the deleted local cache content list
  • the second accumulation unit Used to add 1 to the current heat value of the packet domain service.
  • the embodiment of the present invention further provides a cooperative distribution cache device for cache data, which is shown in FIG. 4, and the device includes: a first receiving unit 41 and a synchronization unit 42, wherein the first receiving The unit 41 is configured to receive, by the one or more base stations, a request for sending a synchronization packet domain service popularity value, where the synchronization unit 42 is configured to update, according to the request, a heat value corresponding to the packet domain service in the cached content list.
  • the device may further include: a first query unit, a first sending unit, and a first accumulating unit, where the first query unit is configured to receive the query packet domain service sent by the base station Querying, in the cached content list, whether to record the location information of the packet domain service, and sending the first query result; the first sending unit, configured to receive the query from the cached content list Transmitting the location information of the base station corresponding to the packet domain service to the base station when the query result of the packet domain service is recorded; the first accumulation unit is configured to add a heat value of the packet domain service to the base station. .
  • the device may further include: a second query unit, a second sending unit, and a first recording unit, where the second query unit is configured to receive no content from the cached content list When the first query result of the packet domain service is queried, the query is signed. a content list, and sending a second query result; the second sending unit, configured to: when the second query result of the packet domain service is queried from the subscription content list, the query is cached The location information of the packet domain service is sent to the base station cache; the first recording unit is configured to add the queried packet domain service and location information of the base station that caches the packet domain service to the cached content In the list, and mark the current heat of the packet domain service as
  • the device may further include: a third query unit, a first determining unit, a third sending unit, and an updating unit, where the third query unit is configured to receive the subscription content list When the second query result of the packet domain service is not queried, the warm-up content list is queried, and the third query result is sent; the first determining unit is configured to receive the warm-up content list from the When the third query result of the packet domain service is queried, it is determined whether the heat value of the packet domain service reaches a preset cache threshold; and the determination result is sent; the third sending unit is configured to receive the Notifying the base station to cache location information of a service provider of the packet domain service, so that the base station locally caches the location obtained from the service provider, when the heat value of the packet domain service reaches a preset cache threshold.
  • the update unit is configured to: when the heat value of the packet domain service is received does not reach a preset cache threshold When breaking a result, the preheating current heat updating the table of contents of the packet service domain, and notifies the base station without buffering the packet domain service.
  • the device may further include: a fourth sending unit and a second recording unit, where the fourth sending unit is configured to: after receiving the query from the warm-up content list When the third query result of the packet domain service is sent, the base station is notified that the location information of the packet domain service is not queried, and the second recording unit is configured to add, in the warm-up content list, the query to cache the packet. Recording the location information of the domain service, and recording the current heat of the packet domain service as 1.
  • the device may further include: a second receiving unit, a fourth querying unit, a second determining unit, an obtaining unit, a first selecting unit, and a third recording unit, where the second receiving unit is used by Receiving, by the one or more base stations, a notification that the entry of the local cached content list is full; the fourth querying unit is configured to separately query whether the maintained cached content list, the subscription content list, or the warm-up content list is recorded Cache the location information of the packet domain service; the second determining unit is configured to: when the fourth query unit queries the subscription content list or the warm-up content list, the location information of the packet domain service is cached , judge access to the points Whether the heat value of the group domain service reaches the cache threshold and sends the judgment result; the obtaining unit is configured to acquire, after receiving the determination result that the heat value reaches the cache threshold, acquire the base station except for sending the access to the packet domain service request The buffering remaining space of all other base stations; the first selecting unit, configured to select a base station that
  • the apparatus may further include: a second selecting unit and a fifth sending unit, where the second selecting unit is configured to not select a suitable remaining cache in a remaining space of the cache from all other base stations And the fifth sending unit is configured to notify the base station to delete the cached content with a relatively low popularity from the locally cached content list, and the cached content is relatively low in the cached content list; Notifying the base station to cache the queried packet domain service in the deleted local cache content list.
  • the second selecting unit is configured to not select a suitable remaining cache in a remaining space of the cache from all other base stations
  • the fifth sending unit is configured to notify the base station to delete the cached content with a relatively low popularity from the locally cached content list, and the cached content is relatively low in the cached content list; Notifying the base station to cache the queried packet domain service in the deleted local cache content list.
  • the embodiment of the present invention further provides a synchronization system for cache data heat value, and the structure of the system is shown in FIG. 5.
  • the system includes: one or more base stations 51. But not limited to this, and a radio network controller or a central control base station 52; the base station 51 is integrated with a synchronization device 511 for caching data popularity values, and the radio network controller or the central control base station 52 is integrated with a cache.
  • a cooperative distribution buffer device 521 wherein the cache data popularity value synchronization device 511 is configured to receive a request for the user equipment to access the packet domain service; if it is determined that the packet domain service is cached locally, the packet is The domain service is sent to the user equipment, and the current heat value of the packet domain service is accumulated in the locally cached content list; and when the accumulated current heat value reaches a preset threshold, the cache data heat value synchronization device is used. 521 sending a current heat value of the packet domain service, and clearing the current heat value;
  • the cooperative distribution cache device 521 of the cache data, the synchronization device 511 for receiving the cache data popularity value sends a request for synchronizing the current heat value of the packet domain service; and updating the cached content list according to the request The heat value corresponding to the packet domain service.
  • the embodiment of the present invention further provides a synchronization device for synchronizing cached data popularity values, which is applied to a radio access network composed of a base station controller and a base station managed by the base station controller, where The buffer for storing the hot content is distributed to the plurality of base stations, and the device includes: a first receiving unit, a determining unit, a first sending unit, a first accumulating unit, and a synchronizing unit, wherein the first receiving unit And the determining unit is configured to: determine, according to the request of the packet domain service, whether the packet domain service is cached locally, and send a determination result; a sending unit, configured to send the packet domain service to the user equipment when receiving the determination result of the yes; the first accumulating unit, configured to cache the content locally when receiving the determination result of yes Adding a current heat value of the packet domain service according to a preset function in the list; the synchronization unit is used to When the current heat value of the packet domain service is added to
  • the method may further include: an obtaining unit, configured to: when receiving the determination result that the determining unit sends no, the cached content list, the subscription content list, or the warm-up content list maintained by the heat information synchronization node Obtaining the location information of the packet domain service, and acquiring the packet domain service from a base station or a service provider corresponding to the location information; the first sending unit is further configured to: acquire the obtained packet domain service Sent to the user equipment.
  • an obtaining unit configured to: when receiving the determination result that the determining unit sends no, the cached content list, the subscription content list, or the warm-up content list maintained by the heat information synchronization node Obtaining the location information of the packet domain service, and acquiring the packet domain service from a base station or a service provider corresponding to the location information
  • the first sending unit is further configured to: acquire the obtained packet domain service Sent to the user equipment.
  • the method further includes: a second sending unit, a second receiving unit, and a forwarding unit, where the second sending unit is configured to send, to the heat information synchronization node, a request for allocating a cache node; a receiving unit, configured to receive a response of the heat information synchronization node, where the response carries location information of a second base station that is cached by the heat information synchronization node and can buffer the packet domain service; The location information sends the packet domain service to the second base station, so that the second base station buffers the packet domain service and updates a current heat value of the packet domain service according to a preset function.
  • the method further includes: a third sending unit, a third receiving unit, and a deleting unit, where the third sending unit is configured to send, to the heat information synchronization node, a request to delete the cached content; a receiving unit, configured to receive a response that the heat information synchronization node sends a delete cache content, where the deleting unit is configured to delete the text according to the response of deleting the cache content
  • the packet domain service that caches content.
  • the embodiment of the present invention further provides a cooperative distribution buffering device for buffering data, where the device includes: a first receiving unit and a synchronization unit, where the first receiving unit is configured to receive, by the at least one first base station, a request for synchronizing the packet domain service popularity value; the synchronization unit, configured to update the heat value corresponding to the packet domain service in the cached content list according to the request.
  • the method further includes: an update unit and a notification unit, where the update unit is configured to: when the hotness of the packet domain service does not reach a preset cache threshold, update the packet in the warm-up content list The current hotspot of the domain service; the notification unit is configured to notify the first base station not to cache the packet domain service.
  • the method further includes: a second receiving unit, a querying unit, a determining unit, a first sending unit, and an adding unit, where the second receiving unit is configured to receive the allocated cache node sent by the first base station a requesting unit, configured to query whether the maintained cached content list, the subscription content list, or the warm-up content list includes the packet domain service, and send the query result; the determining unit, configured to receive Determining the location record of the packet-based domain service in the subscription content list or the warm-up content list, and determining the location information of the second base station when the heat value of the packet domain service reaches the query result of the buffer threshold; a first sending unit, configured to send a response to the first base station, where the response carries location information of the second base station, where the adding unit is configured to add the second base station to the cached content list The location of the record.
  • the embodiment of the present invention further provides a synchronization system for distributing cached data popularity values, including at least one base station, and a radio network controller or a central control base station; wherein the base station is integrated with a cache data popularity value synchronization device And a cooperative distributed cache device in which the wireless network controller or the central control base station integrates cache data, where
  • the synchronization device for receiving the cache data popularity value configured to receive a request for the user equipment to access the packet domain service, and in response to the request of the packet domain service, if the packet domain service is determined to be locally cached, the packet is The domain service is sent to the user equipment, and the current heat value of the packet domain service is increased according to a preset function in the locally cached content list; When the current heat value of the service is added to the preset threshold, the current heat value of the packet domain service is sent to the heat information synchronization node in the wireless access network for synchronization, and the current cached current heat value is cleared;
  • the cooperative distribution cache device of the cache data the synchronization device for receiving the cache data popularity value sends a request for synchronizing the current heat value of the packet domain service; and updating the cached content list according to the request The heat value corresponding to the packet domain service.
  • the synchronizing device for the cache data heat value includes the above-mentioned units, and will not be described again herein; the unit of the cache data co-distribution buffer device includes the above-mentioned units, and details are not described herein again.
  • FIG. 6 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 1 of the present invention; in this embodiment, a packet domain service accessed by a user equipment is locally hit, that is, accessed by a user equipment.
  • the packet domain service is recorded in the local cache content list of the first base station (as shown in Table 1).
  • This embodiment takes a plurality of base stations as an example, but is not limited thereto.
  • the hot information of the user equipment accessing the packet domain service is maintained on the RNC side (that is, the cached content list and the warmed up content list are established, and the subscription information list may also be included, as detailed in Table 2, Table 3 and Table 4 below).
  • the local Cache of the hot content is distributed in a local cached content list on multiple NodeBs under the jurisdiction of the RNC.
  • a new IP link is established between the NodeBs of the RNC and the corresponding signaling is added to form a mesh network including the RNC and the subordinate NodeB, for mutually transferring the cached file and its storage location on the UTRAN side.
  • the user equipment 61 the first base station (NodeB) 62, the RNC 63, and the second base station 64 are included.
  • the user equipment 61 is within the coverage of the first base station 62 and requires access to a packet domain service (target.html content) that is cached in the local cached content list of the first base station 62 (ie, Recording the content list in the local cache, as shown in Table 1, can directly return the target.html to the user device 61, and accumulate the heat value of the resource by 1 when the accumulated heat value reaches a preset threshold.
  • target.html content a packet domain service
  • the RNC 63 needs to maintain the heat information of the cached content of the n NodeBs under its jurisdiction, and record which NodeB the content is stored in.
  • each NodeB needs to accumulate the heat value of the locally cached content when receiving the request for the locally cached content, and sends the heat value to the RNC after the accumulated heat value reaches a certain threshold.
  • the local cache content and the corresponding heat value are recorded in the local cache content list.
  • FIG. 7 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 2 of the present invention.
  • a packet domain service accessed by a user equipment is hit by another NodeB under the jurisdiction of the RNC, and this embodiment is The hit in the second base station is taken as an example.
  • the user equipment 61 sends an access target.html to the first NodeB 62.
  • the first NodeB 62 determines that the packet domain service is not cached in the local cache content list, and the first NodeB 62 asks the RNC 63 whether the content is cached (ie, hits) in another NodeB.
  • the RNC 63 first queries the cached content. The list is found to be cached in the local cached content list of the second NodeB 64 (as shown in Table 5), and the RNC 63 sends the address of the second NodeB 64 to the first NodeB 62, and adds the current heat corresponding to the content to 1; 5
  • the first NodeB 62 may request the second NodeB 64 to obtain the packet domain service through the IP link established by the private interface between the first NodeB 62 and the second NodeB 64, and obtain the packet domain. After the service, the packet domain service is forwarded to the user equipment 61. In addition, the first NodeB 62 can also acquire the packet domain service from the second NodeB 64 through the RNC 63. The process is well known in the art and will not be described herein.
  • the transmission link between the first NodeB 62 and the second NodeB 64 may be a physical transmission link as shown by 1 in FIG. 7 or a virtual link as shown in FIG. , that is, forwarded through the RNC.
  • FIG. 8 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 3 of the present invention; a packet domain service accessed by a user equipment is hit in a subscription content list.
  • the network elements involved in the processing are processed, and other network elements as shown in the figure are also included. This embodiment is not described.
  • the user equipment accesses target.html through the first NodeB, the content is not cached in the first NodeB, and the first NodeB 62 asks the RNC whether it is cached in another NodeB, and the RNC receives the query.
  • the Cache list is queried to find that the location record of the content is not cached, the query is performed in the subscription content list. If the location of the content is cached in the subscription content list, and the content is the subscription Cache content, the notification is notified.
  • the party ie, the first NodeB directly caches the location of the subscription Cache content, so as to obtain the content from the service provider corresponding to the location; meanwhile, the RNC associates the NodeB IP of the subscription Cache content.
  • the address is added to the cached content list, and the current heat corresponding to the content is recorded as 0.
  • the first NodeB synchronizes the heat with the RNC, if the RNC finds that the content has a hotness of 0 in the cached content list, it indicates that the content is the contracted content, and the current heat is not accumulated.
  • the subscription content may be configured through the configuration maintenance terminal on the RNC side.
  • the cache threshold may not be reached, and the content may be cached before the SP contract expires or the SP requests to update the subscription content.
  • FIG. 9 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 4 of the present invention; a packet domain service missed by a user equipment is missed.
  • the network element involved in the text is processed, and other network elements as shown in the figure are also included, and this embodiment is not described.
  • the user equipment sends a request to the first NodeB to access the target.html
  • the first NodeB determines that the content is not cached in the first NodeB
  • the first NodeB asks the RNC whether it is After receiving the query, the RNC queries the warm-up content list after querying the Cache list and the subscription content list and not finding related records:
  • the inquiring party ie, the first NodeB
  • the inquiring party does not need to cache the content, and at the same time, add an entry in the warm-up content (ie, when there is no record in the warm-up content list), And record the current heat value as 1;
  • the RNC updates the current heat of the entry in the warm-up content list, and notifies the same.
  • the querier ie, the first NodeB
  • the first NodeB forwards the request to the SP corresponding to the IP address through the Gi port, and obtains the packet domain service requested by the user equipment from the SP, and sends the packet domain service to the user equipment, and then does not The content cache obtained by the SP.
  • the RNC notifies the first NodeB to cache the content returned by the SP and the IP address of the SP, and the RNC adds a Cache content list. An entry that records the heat and storage address of the content and deletes the record of the content from the warm-up content table.
  • the first NodeB forwards the request to the SP through the Gi port, and acquires the content requested by the user equipment from the SP. And cached locally.
  • FIG. 10 is a schematic structural diagram of a synchronization system for cache data heat value according to Embodiment 5 of the present invention; the application scenario of this embodiment is storage location migration.
  • the network element involved in the text is processed, and other network elements as shown in the figure are also included, and this embodiment is not described.
  • the user equipment accesses target.html through the first NodeB, the content is not cached in the first NodeB, and the buffer space of the first NodeB is full, or is maintained by the first NodeB. If the entry of the local Cache content list is full and the new content cannot be cached, the first NodeB asks the RNC whether it is hit by another NodeB.
  • the inquiry message carries a field to inform the RNC that the local cache is full. After receiving the inquiry, the RNC queries the three lists maintained, if there is a record of the content in the subscription content list, or there is a record of the content in the warm-up content list, and the heat of the visit is accumulated.
  • the content cache needs to be sent to all the NodeBs except the first NodeB, and each NodeB is required to send the buffer remaining space, and according to the sending of each NodeB, the remaining space is large and the distance is selected.
  • the second NodeB that is closer to the first NodeB (as an example) caches the content.
  • the RNC sends the IP address of the second NodeB 64 to the first NodeB, and adds a record of the content in the cached content list of the RNC.
  • the content obtained by the first NodeB is sent from the SP to the second NodeB through the private interface between the NodeBs.
  • the cache can also be forwarded through the RNC, which is not limited in this embodiment.
  • FIG. 11 is a schematic structural diagram of a synchronization system for cache data heat value according to Embodiment 6 of the present invention; the application scenario of the embodiment is cache content deletion.
  • the user equipment accesses target.html through the first NodeB, the content is not cached in the first NodeB, and the buffer space of the first NodeB is full, or the locality maintained by the first NodeB. If the entry of the Cache content list is full and the new content cannot be cached, the first NodeB asks the RNC whether it is hit by another NodeB.
  • the inquiry message carries a field to inform the RNC that the local cache is full. After receiving the inquiry, the RNC queries the three lists maintained, if there is a record of the content in the subscription content list, or if there is a record of the content in the warm-up content list, and the heat of the visit is accumulated.
  • the content needs to be cached. If the Cache content list maintained by the RNC is full, or the RNC queries the remaining space of each NodeB, and finds that there is no NodeB suitable for buffering new content, the RNC selects a relatively low heat from the cached content of the first NodeB (eg, In the picture blue.html), pass It is known that the first NodeB is deleted in the cache, and the new content target.html is stored. In the list maintained by the first NodeB6 and the RNC, the corresponding entry of the content needs to be deleted.
  • the first NodeB eg, In the picture blue.html
  • FIG. 12 is a schematic structural diagram of a synchronization system for cache data popularity values according to Embodiment 7 of the present invention
  • the application scenario of the embodiment is a distributed cache combined with a central control base station (HUB NodeB) technology implementation scheme
  • the embodiment is similar to the implementation process of all the foregoing embodiments. The difference is that a central control base station is set between the base station and the radio network controller, and the central control base station is connected to each base station, as shown in the figure.
  • the central control base station has some functions of the radio network controller, for example, maintaining a cached content list, a subscription content list, and/or a warm-up content list, and also having a user equipment surface function, etc., Each base station performs functions such as information interaction, and the specific implementation process thereof is as described above.
  • the NodeB in which the Cache is deployed and the associated RNC form a mesh network, which is equivalent to expanding the storage space, and uniformly scheduling the interworking information through the RNC, so as to ensure the Cache hit even in the mobility scenario. rate.
  • the aggregation of the heat information needs to be transferred to the eNodeB located at the center of the network.
  • the heat information can be transmitted through the X2 interface, which can achieve smooth upgrade to the LTE system. System upgrade costs.
  • the RNC collaborative scheduling method solves the problem that the content that reaches the cache threshold cannot be cached due to the limited storage space of a single network element.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention may be in the form of a software product in essence or in part contributing to the prior art.
  • the computer software product can be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute the program.
  • a computer device which may be a personal computer, a server, a network device, etc.

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Abstract

本发明提供一种分布式緩存数据热度值的同步方法、协同分布緩存方法、装置及系统，所述同步方法包括：第一基站接收用户设备访问分组域业务的请求；响应于所述分组域业务的请求，若第一基站判定所述分组域业务緩存在本地，则将所述分组域业务发送给所述用户设备，并在所述第一基站的本地緩存内容列表中根据预设的函数增加所述分组域业务的当前热度值；当所述分组域业务的当前热度值累加到预设阈值时，所述第一基站将所述分组域业务的当前热度值发送给所述无线接入网中的热度信息同步节点进行同步，并将所述第一基站本地緩存的当前热度值清零。本发明以解决现有技术中无法实现网内緩存数据共享的技术问题，也以节省IUB口的传输带宽的技术问题。

Description

緩存数据热度值的同步方法、 分布緩存方法、 装置及系统 本申请要求于 2011 年 7 月 15 日提交中国专利局、 申请号为 201110199469.9、发明名称为 "緩存数据热度值的同步方法、分布緩存方法、 装置及系统" 的中国专利申请的优先权， 全部内容通过引用结合在本申请 中。 技术领域 本发明涉及无线通信技术领域， 特别涉及一种分布式緩存数据热度值 的同步方法、 緩存数据的协同分布緩存方法、 装置及系统。 背景技术
在通用移动通信系统 （UMTS , Universal Mobile Telecommunications System )中， 高速緩冲存储器 ( Cache )可以部署在无线网络控制器 ( RNC, Radio Network Controller ), 也可以部署在基站（Node B ) 中。
如果部署在 RNC中， 需要在 RNC上部署本地存储介质和热度信息， 同时在 RNC解析应用层数据包，对满足緩存判决条件的内容进行本地緩存， RNC负责维护已緩存内容和热度未达到阈值的内容， 但后续还可能緩存资 源热度信息。 RNC部署的本地存储介质的容量即为 Cache的最大容量。 其 中， Cache业务可以结合本地流量卸载， 即 RNC将不需要经过核心网的外 网分组数据业务（PS, Packet Service )业务流量经 Gi口卸载， 直接发送至 相应的服务提供商（ SP, Service Provider ), 来节省从 RNC到核心网侧的带 宽。 同时， 当用户设备访问的内容在 RNC上已经緩存， 则可以直接从 RNC 的本地存储介质提取该内容， 并反会给用户设备， 节省了 IU口及后续的传 输网络带宽， 同时减少用户设备访问时延。 但是， 在 UMTS网络中， Cache 部署在 RNC无法节省 IUB口传输带宽； 也不利于 UMTS网络向 LTE平滑 升级。
如果 Cache 部署在 NodeB 中， 热度信息和本地存储介质都部署在 NodeB, 为了解析应用层数据包， NodeB 需要判定用户设备访问的内容是 否可以进行本地緩存， 需要将 PS用户设备面下移至 NodeB。 同样， Cache 业务也可以和本地流量卸载技术结合， 从 NodeB出 Gi口， 夕卜网的 PS业务 通过 Gi口卸载， 直接传送到相应的 SP, 节省了 IUB口及后续网络的传输 带宽。 但是， 由于 NodeB更靠近网络边缘， 单个 NodeB覆盖用户设备数有 限， 命中率较低， 仅适用于室内覆盖及低移动场景。 此外， 不同 NodeB覆 盖下的用户设备可能访问相同的热点内容， 造成同一热点内容在多个 NodeB内緩存， 造成统一内容占用多个 NodeB的緩存资源。
在对现有技术的研究和实践过程中， 本发明的发明人发现， 现有的实 现方式中， 无论 Cache部署在 RNC上还是 NodeB上， Cache信息都是在单 个网元内部管理， 单个网元可以挂载的存储空间有限。 同时， 如果 Cache 部署在 RNC, 不利于向 LTE平滑升级， 也无法节省 IUB口的传输带宽； 如 果部署在 NodeB上， 由于覆盖用户设备数有限， 命中率较低， 仅适用于室 内覆盖及低移动场景， 不同的 NodeB可能对同一资源重复緩存， 无法实现 网内共享。 发明内容
本发明实施例提供一种分布式緩存数据热度值的同步方法、 装置及系 统， 以解决现有技术中无法实现网内緩存数据共享的技术问题。
本发明实施例提供一种緩存数据的协同分布緩存方法、 緩存数据的协 同分布緩存方法、 装置及系统， 以节省 IUB口的传输带宽的技术问题。
为解决上述技术问题， 本发明实施例提供一种分布式緩存数据热度值 的同步方法， 应用于无线接入网， 所述无线接入网包括热度信息同步节点 及所述热度信息同步节点所管理的基站，， 其中用于存储热点内容的緩存分 布式部署于所述基站， 所述方法包括：
所述无线接入网的第一基站接收用户设备访问分组域业务的请求； 响应于所述分组域业务的请求， 若所述第一基站判定所述分组域业务 緩存在本地， 则将所述分组域业务发送给所述用户设备， 并在所述第一基 站的本地緩存内容列表中根据预设的函数增加所述分组域业务的当前热度 值；
当所述分组域业务的当前热度值累加到预设阈值时， 所述第一基站将 所述分组域业务的当前热度值发送给所述热度信息同步节点进行同步， 并 将所述第一基站本地緩存的当前热度值清零。
本发明实施例还提供一种緩存数据的协同分布緩存方法， 应用于无线 接入网， 所述无线接入网包括热度信息同步节点及所述热度信息同步节点 所管理的基站， 所述方法包括：
所述热度信息同步节点接收所述无线接入网的第一基站发送的同步分 组域业务热度值的请求；
所述热度信息同步节点根据所述请求更新已緩存内容列表中所述分组 域业务对应的热度值。
相应的， 本发明实施例还提供一种分布式緩存数据热度值的同步装置 , 应用于无线接入网， 所述无线接入网包括热度信息同步节点及所述热度信 息同步节点所管理的基站， 其中用于存储热点内容的緩存分布式部署于所 述基站， 所述装置包括：
第一接收单元， 用于接收用户设备访问分组域业务的请求；
判断单元， 用于响应于所述分组域业务的请求， 判断所述分组域业务 是否緩存在本地中， 并发送判断结果；
第一发送单元， 用于在接收到是的判断结果时， 将所述分组域业务发 送给所述用户设备；
第一累计单元， 用于在接收到是的判断结果时， 在所述无线接入网的 第一基站的本地緩存内容列表中根据预设的函数增加所述分组域业务的当 前热度值；
同步单元， 用于在所述分组域业务的当前热度值累加到预设阈值时， 将所述分组域业务的当前热度值发送给所述热度信息同步节点进行同步， 并将所述第一基站本地緩存的当前热度值清零。
本发明实施例还提供一种緩存数据的协同分布緩存装置， 应用于无线 接入网， 所述无线接入网包括热度信息同步节点及所述热度信息同步节点 所管理的基站， 包括：
第一接收单元， 用于接收所述无线接入网的至少一个第一基站发送同 步分组域业务热度值的请求；
同步单元， 用于根据所述请求更新已緩存内容列表中所述分组域业务 对应的热度值。
本发明实施例还提供一种分布式緩存数据热度值的同步系统， 包括热 度信息同步节点及所述热度信息同步节点所管理的至少一个基站， 所述基 站包括上述高速緩存数据热度值的同步装置， 所述热度信息同步节点包括 高速緩存数据的协同分布緩存装置。
由上述可知， 基站（NodeB )对已緩存内容的热度达到一定阈值后， 需 要向无线网络控制器（RNC ) 同步， 以便于 RNC在已 Cache内容列表中， 对其热度值进行累加， 同步后， NodeB 在本地的已緩存内容列表中的热度 值清零。 也就是说， 本实施例中的分布式 Cache的采用， 使得 RNC不需要 緩存大量的资源数据， 大大节省了 RNC的存储空间， 而将内容的緩存分散 到各 NodeB分担， 相当于总的存储能量得到了扩展， 解决了同一资源重复 緩存的技术问题， 实现了网内共存。 附图说明
图 1 为本发明实施例提供的一种高速緩存数据热度值的同步方法的流 程图；
图 2为本发明实施例提供的一种緩存数据的协同分布緩存方法的流程 图；
图 3 为本发明实施例提供一种高速緩存数据热度值的同步装置的结构 示意图；
图 4为本发明实施例提供一种高速緩存数据的协同分布緩存装置的结 构示意图；
图 5 为本发明实施例提供一种高速緩存数据热度值的同步系统的结构 示意图；
图 6为本发明实施例 1提供的一种高速緩存数据热度值的同步系统的 结构示意图；
图 7为本发明实施例 2提供的一种高速緩存数据热度值的同步系统的 结构示意图；
图 8为本发明实施例 3提供的一种高速緩存数据热度值的同步系统的 结构示意图；
图 9为本发明实施例 4提供的一种高速緩存数据热度值的同步系统的 结构示意图； 图 10为本发明实施例 5提供的一种高速緩存数据热度值的同步系统的 结构示意图；
图 11为本发明实施例 6提供的一种高速緩存数据热度值的同步系统的 结构示意图
图 12为本发明实施例 7提供的一种高速緩存数据热度值的同步系统的 结构示意图。 具体实施方式
本发明实施例中， 以 UMTS网络为例进行说明。 在本实施例中， 无线 接入网 RAN,由 NodeB和 RNC组成。其中，用于存储热点内容的緩存 Cache 分布式部署在 RNC所管辖的多个 NodeB, NodeB和 RNC可以协同 Cache, 用户访问内容的热度信息由热度信息同步节点统一维护。 该热度信息同步 节点可以是中控基站， 也可以是 RNC。 在本实施例中， 热度信息同步节点 为 RNC。
在 RNC下属的 NodeB之间新建物理链路并增加相应的信令，形成包括 RNC及下属 NodeB在内的网络， 用于互传已 Cache的文件及其在 UTRAN 侧的存储位置。 NodeB与 NodeB之间的连接可以是 IP连接， 而 NodeB和 之间的网络拓朴结构可以是星型、 或者环形结构等。
本发明实施例中， 各个 NodeB侧可以仅维护一张表， 即本 NodeB 已 Cache内容的 URL和本地热度； RNC可以维护三张表， 一是各 NodeB 已 Cache内容的当前热度和存储位置列表， 二是预热内容热度记录， 即用户曾 经访问过， 但热度未达到 Cache阈值的内容； 三是签约 Cache内容维护表， 即签约 SP指定需要緩存的内容列表。
NodeB对已 Cache内容的热度达到一定阈值后需要向 RNC同步， RNC 在已 Cache内容维护表中， 对其热度进行累加， 同步后， NodeB本地热度 清零。
分布式 Cache的采用使得 RNC不需要緩存大量的资源数据， 而只需要 緩存三张列表， 大大节省了 RNC 的存储空间， 而将内容的緩存分散到各 NodeB分担， 相当于总的存储能量得到了扩展。 RNC作为 Cache网络的中 控网元， 对现有系统冲击小， 普通 UMTS网络升级到 Cache网络， RNC硬 件不需要做任何改动； 后续 UMTS的 Cache网络向 LTE升级， 也不会因为 网络扁平化对现有方案造成影响， 只需要将 RNC存储的三张列表在新的中 控网元维护即可。
RNC作为 Cache网状网络的中控网元， 仅需要通过维护三张表来实现 对整个网络 Cache内容的管理。对这三张表的分类和搜索顺序，可以使 RNC 以最快的速度实现对 Cache网络的调度。 网状的 Cache网络思想下， 网络 中的每个 NodeB 緩存的内容可以为网络中所有 NodeB 覆盖的用户提供 Cache服务， 可以大幅度提高 Cache命中率， 在移动性场景下命中率也可以 得到保证。
为了使本技术领域的人员更好地理解本发明实施例的方案， 下面结合 附图和实施方式对本发明实施例作进一步的详细说明。
请参阅图 1 ,为本发明实施例提供的一种分布式緩存数据热度值的同步 方法的流程图， 所述方法应用于由基站控制器以及所述基站控制器所管理 的基站组成的无线接入网， 其中用于存储热点内容的緩存分布式部署于所 述多个基站， 所述方法包括：
步骤 101 : 第一基站接收用户设备访问分组域业务的请求； 其中， 所述 分组域业务， 比如网页内容等， 当并不限于此。
步骤 102: 响应于所述分组域业务的请求， 若所述第一基站判定所述分 组域业务緩存在本地， 则将所述分组域业务发送给所述用户设备， 并在所 述第一基站的本地緩存内容列表中根据预设的函数增加所述分组域业务的 当前热度值；
其中， 本地緩存内容列表为基站维护、 用于记录本地緩存的内容的热 度值， 例如， 可以是本基站已緩存内容的统一资源标识符和本地热度。
步骤 103: 当所述分组域业务的当前热度值累加到预设阈值时， 所述第 一基站将所述分组域业务的当前热度值发送给所述无线接入网中的热度信 息同步节点进行同步， 并将所述第一基站本地緩存的当前热度值清零。
可选的， 所述方法还可以包括： 若所述第一基站判断所述分组域业务 没有緩存在本地， 则从所述热度信息同步节点所维护的已緩存内容列表、 签约内容列表或预热内容列表获取緩存所述分组域业务的位置信息， 从所 述位置信息对应的基站或服务提供商获取所述分组域业务， 并将获取的所 述分组域业务发送给所述用户设备。 可选的， 所述方法还可以包括： 所述第一基站向所述热度信息同步节 点发送分配緩存节点的请求； 所述第一基站接收所述热度信息同步节点的 响应， 所述响应携带所述热度信息同步节点分配的能緩存所述分组域业务 的第二基站的位置信息； 所述第一基站根据所述位置信息将所述分组域业 务发送给所述第二基站， 以便所述第二基站緩存所述分组域业务并根据预 设的函数更新所述分组域业务的当前热度值。
可选的， 所述方法还可以包括： 所述第一基站向所述热度信息同步节 点发送删除緩存内容的请求； 所述第一基站接收所述热度信息同步节点发 送删除緩存内容的响应； 所述第一基站根据所述删除緩存内容的响应删除 本地緩存内容的分组域业务。
可选的 , 所述热度信息同步节点为中控基站或者所述基站所属的基站 控制器。
基于上述， 基站接收用户设备访问分组域业务的请求； 若基站判定所 述分组域业务緩存在本地， 则将所述分组域业务发送给所述用户设备， 并 在本地緩存内容列表中按照预设的函数增加所述分组域业务的当前热度 值； 当所述分组域业务的当前热度值累加到预设阈值时， 所述基站将所述 当前热度值发送给无线网络控制器或中控基站进行同步， 并将当前热度值 清零。
可选的， 所述方法还可以进一步包括： 若基站判断所述分组域业务没 有记录在本地緩存内容列表中，则从无线网络控制器（ RNC, Radio Network Controller )或中控基站（ HUB NodeB ) 所维护的已緩存内容列表、 签约内 容列表或预热内容列表获取緩存所述分组域业务的位置信息， 从所述位置 信息对应的基站或服务提供商中获取所述分组域业务， 并将获取的所述分 组域业务发送给所述用户设备， 其中， 所述已緩存内容列表包括： 分组域 业务的资源名称、 当前热度和存储位置； 所述签约内容列表包括： 签约资 源； 所述预热内容列表包括资源名称和当前热度； 具体包括下述情况： 若基站判断所述分组域业务没有记录在本地緩存内容列表中， 则从无 线网络控制器或中控基站的已緩存内容列表中获取緩存所述分组域业务的 位置信息并从所述位置信息对应的基站中获取所述分组域业务， 将所述分 组域业务发送给所述用户设备； 其中， 所述位置信息 （比如 IP地址等）对 应的基站对所述分组域业务的当前热度加 1 ; 其中， 所述从所述 IP地址对 应的基站中获取所述分组域业务包括：通过建立的 IP链路从所述 IP地址对 应的基站中获取所述分组域业务； 或者， 通过无线网络控制器或中控基站 从所述 IP地址对应的基站中获取所述分组域业务；
若基站判断所述分组域业务没有记录在本地緩存内容列表中， 则从无 线网络控制器或中控基站的签约内容列表中能获取到緩存所述分组域业务 的位置信息（即 IP地址）， 且所述分组域业务为签约信息； 以及从所述位置 信息对应的服务提供商中获取所述分组域业务， 将所述分组域业务緩存到 本地， 以及将签约信息添加到本地緩存内容列表中， 并将所述分组域业务 发送给所述用户设备；
若基站判断所述分组域业务没有记录在本地緩存列表中， 从无线网络 控制器或中控基站的已緩存内容列表中也没有获取到緩存所述分组域业务 的位置信息， 且从所述无线网络控制器或中控基站的签约内容列表能获取 到緩存所述分组域业务的位置信息， 且所述分组域业务为签约信息； 将所 述签约信息緩存到本地緩存内容列表中， 以及从所述位置信息对应的服务 提供商中获取所述分组域业务， 并将所述分组域业务发送给所述用户设备， 以及在本地緩存所述分组域业务；
若基站判断所述分组域业务没有记录在本地緩存列表中， 则从所述无 线网络控制器或中控基站的已緩存内容列表和签约内容列表均没有获取到 緩存所述分组域业务的位置信息， 且从所述无线网络控制器或中控基站的 预热内容列表中获取到存储所述分组域业务的服务提供商的位置信息及所 述分组域业务的当前热度值满足预设阈值的信息， 在从所述服务提供商获 取到所述分组域业务后， 将获取到的所述分组域业务发送给所述用户设备； 并将所述分组域业务緩存到本地， 并在本地緩存内容列表中添加一条记录； 或者， 基站从所述无线网络控制器或中控基站的预热内容列表中获取到存 储所述分组域业务的服务提供商的位置信息及当前热度值不满足预设阈值 的信息， 在从所述服务提供商获取到所述分组域业务后， 直接将所述分组 域业务发送给所述用户设备。
需要说明的是， 用户设备从基站获取的就是分组域业务， 而签约信息 是在签约内容列表中， 都存储在 RNC, 所谓签约信息就是表明哪些网页的 内容需要緩存， 在签约内容列表记录的是一个 URL, 以及这个 URL对应的 分组域业务存储在哪个基站； 位置信息指得就是 NodeB的 IP地址。 是否签约只能在 RNC和中控基站获知， 从所述位置信息（即緩存该网 页的 NodeB )获取的是分组域业务。
可选的， 在从所述服务提供商获取到所述分组域业务后， 如果所述本 地緩存内容列表的表项已满， 不能緩存所述分组域业务时， 所述方法还可 以进一步包括：
基站向无线网络控制器或中控基站发送本地緩存内容列表的表项已满 的通知；
基站接收无线网络控制器或中控基站发送的能緩存所述分组域业务的 基站的位置信息， 其中， 所述能緩存所述分组域业务的基站为緩存空间较 大， 且距本地緩存内容列表的表项已满的基站较近；
该基站通过预先建立的 IP链路， 将所述分组域业务发送给所述位置信 息对应的基站， 以便该基站将所述分组域业务记录到本地緩存内容列表中， 并将所述分组域业务的当前热度值加 1。
本发明实施例中，基站 ( NodeB )对已緩存内容的热度达到一定阈值后， 需要向无线网络控制器（ RNC )同步， 以便于 RNC在已 Cache内容列表中， 对其热度值进行累加， 同步后， NodeB 在本地的已緩存内容列表中的热度 值清零。 也就是说， 本实施例中采用分布式 Cache, 使得 RNC不需要緩存 大量的资源数据， 大大节省了 RNC的存储空间， 而将内容的緩存分散到各 NodeB 分担， 相当于总的存储能量得到了扩展， 解决了同一资源重复緩存 的技术问题， 实现了网内共存。
还请参阅图 2,为本发明实施例提供的一种緩存数据的协同分布緩存方 法的流程图， 所述方法包括：
步骤 201 :热度信息同步节点接收第一基站发送的同步分组域业务热度 值的请求； 其中， 分组域业务比如网页内容等。
当然， 该步骤中， 热度信息同步节点也可以同时接收多个基站发送的 同步分组域业务热度值的请求。
步骤 202:所述热度信息同步节点根据所述请求更新已緩存内容列表中 所述分组域业务对应的热度值。
可选的， 所述方法还可以包括： 如果所述分组域业务的热度没有达到 预设緩存门限， 所述热度信息同步节点更新所述预热内容列表中所述分组 域业务的当前热度， 并通知所述第一基站不緩存所述分组域业务。 可选的， 所述方法还可以包括： 所述热度信息同步节点接收所述第一 基站发送的分配緩存节点的请求； 所述热度信息同步节点查询所维护的已 緩存内容列表、 签约内容列表或预热内容列表是否包括所述分组域业务； 如果所述热度信息同步节点在所述签约内容列表或预热内容列表中查询到 緩存所述分组域业务的位置记录， 且所述分组域业务的热度值达到緩存门 限， 则确定第二基站的位置信息， 向所述第一基站发送响应， 所述响应携 带所述第二基站的位置信息； 所述热度信息同步节点在所述已緩存内容列 表中添加所述第二基站的位置的记录。
其中 , 所述热度信息同步节点可以是基站所属的无线网络控制器或中 控基站。
可选的， 所述方法还可以进一步包括：
无线网络控制器或中控基站在接收到所述基站发送的查询分组域业务 的请求时， 查询已緩存内容列表；
如果无线网络控制器或中控基站在从已緩存内容列表中查询到緩存所 述分组域业务的位置记录， 则将緩存所述分组域业务的基站的位置信息发 送给所述基站， 并将该分组域业务的热度值加 1 ;
如果无线网络控制器或中控基站从已緩存内容列表中没有查询到緩存 所述分组域业务的记录， 则查询签约内容列表， 如果从签约内容列表中查 询到緩存所述分组域业务的位置记录， 则将所述查询到緩存分组域业务的 位置信息发送给所述基站緩存， 以及将查询到的所述分组域业务以及緩存 所述分组域业务的基站的位置信息添加到已緩存内容列表中， 并标记该分 组域业务的当前热度为 0;
如果无线网络控制器或中控基站从签约内容列表中没有查询到緩存所 述分组域业务的位置记录， 查询预热内容列表， 如果从所述预热内容列表 中没有查询到緩存所述分组域业务的位置记录， 通知所述基站没有查询到 緩存所述分组域业务的位置信息， 并在预热内容列表中添加没有查询到緩 存所述分组域业务的位置记录， 并将所述分组域业务的当前热度记录为 1 ; 如果无线网络控制器或中控基站从所述预热内容列表中查询到緩存所 述分组域业务的位置记录， 并在所述分组域业务的热度值达到预设緩存门 限时， 通知所述基站緩存所述分组域业务的服务提供商的位置信息， 以便 所述基站在本地緩存从所述服务提供商获取的所述分组域业务。 可选的， 所述方法还可以进一步包括：
如果无线网络控制器或中控基站判定所述分组域业务的热度值没有达 到预设緩存门限时， 更新所述预热内容列表中所述分组域业务的当前热度， 并通知所述基站不用緩存所述分组域业务。
可选的， 所述方法还可以进一步包括：
无线网络控制器或中控基站接收一个或多个基站发送本地緩存内容列 表的表项已满的通知；
无线网络控制器或中控基站分别查询所维护的已緩存内容列表、 签约 内容列表或预热内容列表是否包括所述分组域业务；
如果无线网络控制器或中控基站在所述签约内容列表或预热内容列表 中查询到緩存所述分组域业务的位置（比如 IP地址等）记录， 且访问所述 分组域业务的热度值达到緩存门限， 则获取除发送访问所述分组域业务请 求的基站外的其他所有基站的緩存剩余空间， 并从所有基站中选择剩余緩 存空间较大， 且距发送查询分组域业务的请求的基站较近的基站来緩存所 述分组域业务， 并发送选择的基站的位置； 以及在已緩存内容列表中添加 所述基站的位置的记录。
可选的， 所述方法还可以进一步包括：
在无线网络控制器或中控基站获取除发送访问所述分组域业务请求的 基站外的所有基站的緩存剩余空间后， 若所述緩存空间均不合适， 则从所 述本地緩存内容列表中选择热度相对较低的已緩存内容， 通知所述基站从 所述本地緩存内容列表删除热度相对较低的已緩存内容， 并将在删除后的 本地緩存内容列表中緩存查询到的所述分组域业务。
本发明实施例中，采用 NodeB和 RNC协同 Cache的方式，将分布式存 储的思想运用到无线网络中， 即用户设备访问分组域业务的热度信息在 RNC 侧维护， 热点内容的本地 Cache 分布式部署在 RNC 所管辖的多个 NodeB中。在 RNC下属的 NodeB之间预先新建 IP链路并增加相应的信令， 形成包括 RNC及下属 NodeB在内的网状网络，用于互传已 Cache的文件及 其在 UTRAN侧的存储位置。
由上述实施例可知， 由于采用了分布式存储， 在 NodeB侧仅需要维护 一张表（即本地緩存内容列表， 包括资源名称和本地热度）， 即本 NodeB已 Cache内容的统一资源标识符（URL, Uniform Resource Locator, 或者网页 地址）和本地热度； RNC需要维护三张表， 一是各 NodeB已 Cache内容的 当前热度和存储位置， 即已緩存内容列表（包括资源名称和当前热度和存 储位置）， 二是预热内容列表（包括资源名称和当前热度）， 用于记录预热 内容的热度记录， 即用户设备曾经访问过， 但热度未达到 Cache 阈值的内 容； 三是签约緩存内容表（包括签约资源）， 或者签约 Cache内容维护表， 即签约 SP指定需要緩存的内容列表。
由于采用分布式 Cache, 使得 RNC不需要緩存大量的资源数据， 而只 需要緩存三张列表， 大大节省了 RNC的存储空间， 而将内容的緩存分散到 各 NodeB分担， 相当于总的存储能量得到了扩展。 RNC作为 Cache网络的 中控网元， 对现有系统冲击小， 普通 UMTS网络升级到 Cache网络， RNC 硬件不需要做任何改动； 后续 UMTS的 Cache网络向 LTE升级， 也不会因 为网络扁平化对现有方案造成影响， 只需要将 RNC存储的三张列表在新的 中控网元维护即可。
RNC作为 Cache网状网络的中控网元， 仅需要通过维护三张表来实现 对整个网络 Cache内容的管理。对这三张表的分类和搜索顺序，可以使 RNC 以最快的速度实现对 Cache网络的调度。 网状的 Cache网络思想下， 网络 中的每个 NodeB緩存的内容可以为网络中所有 NodeB覆盖的用户设备提供 Cache服务， 可以大幅度提高 Cache命中率， 在移动性场景下命中率也可以 得到保证。
当然， 在该实施例中， 可以在个基站与无线网络控制器之间设置中控 基站（ HUB NodeB ) , 也就是将热度汇总的工作部署在 HUB NodeB上， 由 记录。各 NodeB之间通过 HUB NodeB进行数据交换。也可以达到节省 IUB 口传输带宽的目的， 并支持向 LTE系统的平滑升级， 其具体的实现过程与 上述过程类似， 具体详见上述， 在此不再贅述。
相应的， 本发明实施例还提供一种高速緩存数据热度值的同步装置， 其结构示意图如图 3所示， 所述装置包括： 第一接收单元 31、判断单元 32、 第一发送单元 33、 第一累计单元 34和同步单元 35。 其中， 所述第一接收 单元 31 , 用于接收用户设备访问分组域业务的请求； 所述判断单元 32, 用 于判断所述分组域业务是否记录在本地緩存内容列表中， 并发送判断结果； 其中， 本地緩存内容列表包括资源名称和本地热度； 所述第一发送单元 33 , 用于在接收到是的判断结果时， 将所述分组域业务发送给所述用户设备； 所述第一累计单元 34, 用于在接收到是的判断结果时， 累加所述分组域业 务的当前热度值； 所述同步单元 35, 用于当累加的当前热度值达到预设阈 值时， 将所述当前热度值发送给无线网络控制器或中控基站进行同步， 并 将当前热度值清零。
可选的， 所述装置还可以进一步包括： 获取单元， 所述获取单元， 用 于在接收到否的判断结果时， 从无线网络控制器或中控基站所维护的已緩 存内容列表、 签约内容列表或预热内容列表获取緩存所述分组域业务的位 置信息， 以及从所述位置信息对应的基站或服务提供商中获取所述分组域 业务； 所述第一发送单元， 还用于将获取的所述分组域业务发送给所述用 户设备。
可选的， 所述获取单元包括： 位置信息获取单元和第一分组域业务获 取单元， 其中， 所述位置信息获取单元， 用于在接收到所述分组域业务没 有緩存在本地时， 从无线网络控制器或中控基站的已緩存内容列表中获取 緩存所述分组域业务的位置信息； 所述第一分组域业务获取单元， 用于从 所述位置信息对应的基站中获取所述分组域业务； 所述第一发送单元， 还 用于将获取的所述分组域业务发送给所述用户设备。
可选的， 所述第一分组域业务获取单元包括： 直接获取单元， 和 /或间 接获取单元， 其中， 所述直接获取单元， 用于通过建立的 IP链路从所述位 置信息 （比如 IP地址）对应的基站中获取所述分组域业务； 所述间接获取 单元， 用于通过无线网络控制器或中控基站从所述位置信息对应的基站中 获取所述分组域业务。
可选的， 在上述实施例中， 所述获取单元还可以进一步包括： 第二分 组域业务获取单元和第一緩存单元， 其中， 第二分组域业务获取单元， 用 于从无线网络控制器或中控基站的签约内容列表中能获取到緩存所述分组 域业务的位置信息， 且所述分组域业务为签约信息， 以及从所述位置信息 对应的服务提供商中获取所述分组域业务；
第一緩存单元， 用于将所述分组域业务緩存到本地， 并将获取到所述 签约信息添加到本地緩存内容列表中；
所述第一发送单元， 还用于将获取的所述分组域业务发送给所述用户 设备。 可选的， 所述获取单元还可以进一步包括： 第三分组域业务获取单元 和第二緩存单元， 其中， 所述第三分组域业务获取单元， 用于在所述分组 域业务没有緩存在本地， 从无线网络控制器或中控基站的已緩存内容列表 中没有获取到緩存所述分组域业务的位置信息， 且从所述无线网络控制器 或中控基站的签约内容列表能获取到緩存所述分组域业务的位置信息， 且 所述分组域业务为签约信息， 以及从所述位置信息对应的服务提供商中获 取所述网页内； 所述第二緩存单元， 用于将所述分组域业务緩存在本地， 并将获取到所述签约信息添加到本地緩存内容列表中； 所述第一发送单元， 还用于将获取的所述分组域业务发送给所述用户设备。
可选的， 所述获取单元还可以进一步包括： 第一服务商地址获取单元、 第四分组域业务获取单元和第三緩存单元； 和 /或， 第二服务商地址获取单 元和第五分组域业务获取单元， 其中， 所述第一服务商地址获取单元， 用 于在所述分组域业务没有緩存在本地时， 从所述无线网络控制器或中控基 站的已緩存内容列表和签约内容列表均没有获取到緩存所述分组域业务的 位置信息， 且从所述无线网络控制器或中控基站的预热内容列表中获取到 緩存所述分组域业务的服务提供商的位置信息及所述分组域业务的当前热 度值满足预设阈值的信息； 所述第四分组域业务获取单元， 用于从所述服 务提供商获取到所述分组域业务； 所述第三緩存单元， 用于将所述获取到 的分组域业务緩存到本地， 并在本地緩存内容列表中添加一条记录； 所述 第二服务商地址获取单元， 用于在所述分组域业务没有緩存在本地时， 从 所述无线网络控制器或中控基站的预热内容列表中获取到存储所述分组域 业务的服务提供商的位置信息及所述分组域业务的当前热度值不满足预设 阈值的信息； 所述第五分组域业务获取单元， 用于从所述服务提供商获取 到所述分组域业务； 所述第一发送单元， 还用于将所述分组域业务发送给 所述用户设备。
可选的， 在从所述服务提供商获取到所述分组域业务后， 且所述本地 緩存内容列表的表项已满， 不能緩存所述分组域业务时， 所述装置还可以 进一步包括： 第二发送单元， 第二接收单元和第三发送单元， 其中， 所述 第二发送单元， 用于向无线网络控制器或中控基站发送本地緩存内容列表 的表项已满的通知； 第二接收单元， 用于接收无线网络控制器或中控基站 发送的能緩存所述分组域业务的基站的位置信息， 其中， 所述能緩存所述 分组域业务的基站为緩存空间较大， 且距本地緩存内容列表的表项已满的 基站较近； 第三发送单元， 用于通过预先建立的 IP链路， 将所述分组域业 务发送给所述位置信息对应的基站， 以便该基站将所述分组域业务记录到 本地緩存内容列表中， 并将所述分组域业务的当前热度值加 1。
可选的， 在从所述服务提供商获取到所述分组域业务后， 如果所述本 地緩存内容列表的表项已满， 不能緩存所述分组域业务时， 所述装置还可 以进一步包括： 第三发送单元， 第三接收单元， 删除单元， 第四緩存单元 和第二累计单元， 其中， 所述第三发送单元， 用于向无线网络控制器或中 控基站发送本地緩存内容列表的表项已满的通知； 所述第三接收单元， 用 于接收无线网络控制器或中控基站发送的删除本地緩存内容列表中热度较 低的分组域业务的命令； 所述删除单元， 用于根据所述命令删除本地緩存 内容列表中热度相对较低的分组域业务； 所述第四緩存单元， 用于在删除 后的本地緩存内容列表中緩存所述分组域业务； 所述第二累计单元， 用于 将所述分组域业务的当前热度值加 1。
所述装置中各个单元的功能和作用的实现过程详见上述方法中对应的 实现过程， 在此不再贅述。
相应的， 本发明实施例还提供一种高速緩存数据的协同分布緩存装置 , 其结构示意图详见图 4, 所述装置包括： 第一接收单元 41和同步单元 42, 其中， 所述第一接收单元 41 , 用于接收一个或多个基站发送同步分组域业 务热度值的请求； 所述同步单元 42, 用于根据所述请求更新已緩存内容列 表中所述分组域业务对应的热度值。
可选的， 所述装置还可以进一步包括： 第一查询单元， 第一发送单元 和第一累计单元， 其中， 所述第一查询单元， 用于在接收到所述基站发送 的查询分组域业务的请求时， 查询已緩存内容列表中是否记录緩存所述分 组域业务的位置信息， 并发送第一查询结果； 所述第一发送单元， 用于在 接收到从所述已緩存内容列表中查询到记录所述分组域业务的查询结果 时， 将所述分组域业务对应的基站的位置信息发送给所述基站； 所述第一 累计单元， 用于将所述分组域业务的热度值加 1。
可选的， 所述装置还可以进一步包括： 第二查询单元， 第二发送单元 和第一记录单元， 其中， 所述第二查询单元， 用于在接收到从所述已緩存 内容列表中没有查询到记录所述分组域业务的第一查询结果时， 查询签约 内容列表， 并发送第二查询结果； 所述第二发送单元， 用于在接收到从所 述签约内容列表中查询到记录所述分组域业务的第二查询结果时， 将所述 查询到緩存分组域业务的位置信息发送给所述基站緩存； 所述第一记录单 元， 用于将查询到的所述分组域业务以及緩存所述分组域业务的基站的位 置信息添加到所述已緩存内容列表中， 并标记该分组域业务的当前热度为
0。
可选的， 所述装置还可以进一步包括： 第三查询单元， 第一判断单元， 第三发送单元和更新单元， 其中， 所述第三查询单元， 用于在接收到从所 述签约内容列表中没有查询到记录所述分组域业务的第二查询结果时， 查 询预热内容列表， 并发送第三查询结果； 所述第一判断单元， 用于在接收 到从所述预热内容列表中查询到记录所述分组域业务的第三查询结果时， 判断所述分组域业务的热度值是否达到预设緩存门限； 并发送判断结果； 所述第三发送单元， 用于在接收到所述分组域业务的热度值达到预设緩存 门限的判断结果时， 通知所述基站緩存所述分组域业务的服务提供商的位 置信息， 以便所述基站在本地緩存从所述服务提供商获取的所述分组域业 务； 所述更新单元， 用于在接收到所述分组域业务的热度值没有达到预设 緩存门限的判断结果时， 更新所述预热内容列表中所述分组域业务的当前 热度， 并通知所述基站不用緩存所述分组域业务。
可选的， 所述装置还可以进一步包括： 第四发送单元和第二记录单元， 其中， 所述第四发送单元， 用于在接收到从所述预热内容列表中没有查询 到记录所述分组域业务的第三查询结果时， 通知所述基站没有查询到緩存 所述分组域业务的位置信息； 所述第二记录单元， 用于在预热内容列表中 添加没有查询到緩存所述分组域业务的位置信息的记录， 并将所述分组域 业务的当前热度记录为 1。
可选的， 所述装置还可以进一步包括： 第二接收单元， 第四查询单元， 第二判断单元， 获取单元， 第一选择单元和第三记录单元， 其中， 所述第 二接收单元， 用于接收一个或多个基站发送本地緩存内容列表的表项已满 的通知； 所述第四查询单元， 用于分别查询所维护的已緩存内容列表、 签 约内容列表或预热内容列表中是否记录緩存所述分组域业务的位置信息； 所述第二判断单元， 用于在第四查询单元从所述签约内容列表或预热内容 列表中查询到緩存所述分组域业务的位置信息的记录时， 判断访问所述分 组域业务的热度值是否达到緩存门限， 并发送判断结果； 所述获取单元， 用于在接收到达到热度值达到緩存门限的判断结果时， 获取除发送访问所 述分组域业务请求的基站外的其他所有基站的緩存剩余空间； 所述第一选 择单元， 用于从其他所有基站的緩存剩余空间中能选择剩余緩存空间较大， 且距发送查询分组域业务的请求的基站较近的基站来緩存所述分组域业 务， 并发送选择的基站的位置信息的； 所述第三记录单元， 用于在已緩存 内容列表中添加緩存所述选择的基站的位置信息的记录。
可选的， 所述装置还可以进一步包括： 第二选择单元和第五发送单元， 其中， 所述第二选择单元， 用于在从其他所有基站的緩存剩余空间中不能 选择到合适的剩余緩存空间时， 从本地緩存内容列表中选择热度相对较低 的已緩存内容； 所述第五发送单元， 用于通知所述基站从所述本地緩存内 容列表删除热度相对较低的已緩存内容； 以及通知所述基站在删除后的本 地緩存内容列表中緩存查询到的所述分组域业务。
所述装置中各个单元的功能和作用的实现过程详见上述方法中对应的 实现过程， 在此不再贅述。
相应的， 本发明实施例还提供一种高速緩存数据热度值的同步系统， 其结构示意图详见图 5 , 所述系统包括： 包括一个或多个基站 51 (本实施 例以一个基站为例， 但并不限于此）， 以及无线网络控制器或中控基站 52; 所述基站 51 中集成有高速緩存数据热度值的同步装置 511 , 所述无线网络 控制器或中控基站 52集成有高速緩存数据的协同分布緩存装置 521 ,其中， 所述高速緩存数据热度值的同步装置 511 ,用于接收用户设备访问分组 域业务的请求； 如果判定所述分组域业务緩存在本地， 则将所述分组域业 务发送给所述用户设备， 并在本地緩存内容列表中累加所述分组域业务的 当前热度值； 当累加的当前热度值达到预设阈值时， 向所述高速緩存数据 热度值的同步装置 521 发送同步所述分组域业务的当前热度值， 并将当前 热度值清零；
所述高速緩存数据的协同分布緩存装置 521 ,用于接收所述高速緩存数 据热度值的同步装置 511 发送同步所述分组域业务的当前热度值的请求； 根据所述请求更新已緩存内容列表中所述分组域业务对应的热度值。
其中， 所述高速緩存数据热度值的同步装置包括的各个单元， 以及各 个单元的功能和作用的实现过程详见上述， 在此不再贅述。 所述高速緩存数据的协同分布緩存装置包括的各个单元， 以及各个单 元的功能和作用的实现过程详见上述， 在此不再贅述。
基于上述方法的实现过程， 本发明实施例还提供一种分布式緩存数据 热度值的同步装置， 应用于由基站控制器以及所述基站控制器所管理的基 站组成的无线接入网， 其中用于存储热点内容的緩存分布式部署于所述多 个基站， 所述装置包括： 第一接收单元， 判断单元， 第一发送单元， 第一 累计单元和同步单元， 其中， 所述第一接收单元， 用于接收用户设备访问 分组域业务的请求； 所述判断单元， 用于响应于所述分组域业务的请求， 判断所述分组域业务是否緩存在本地中， 并发送判断结果； 所述第一发送 单元， 用于在接收到是的判断结果时， 将所述分组域业务发送给所述用户 设备； 所述第一累计单元， 用于在接收到是的判断结果时， 在本地緩存内 容列表中根据预设的函数增加所述分组域业务的当前热度值； 所述同步单 元， 用于在所述分组域业务的当前热度值累加到预设阈值时， 将所述分组 域业务的当前热度值发送给所述无线接入网中的热度信息同步节点进行同 步， 并将所述第一基站本地緩存的当前热度值清零。
可选的， 还可以包括： 获取单元， 用于在接收到所述判断单元发送否 的判断结果时， 从所述热度信息同步节点所维护的已緩存内容列表、 签约 内容列表或预热内容列表获取緩存所述分组域业务的位置信息， 以及从所 述位置信息对应的基站或服务提供商中获取所述分组域业务； 所述第一发 送单元， 还用于将获取的所述分组域业务发送给所述用户设备。
可选的， 还可以包括： 第二发送单元， 第二接收单元和转发单元， 其 中， 所述第二发送单元， 用于向所述热度信息同步节点发送分配緩存节点 的请求； 所述第二接收单元， 用于接收所述热度信息同步节点的响应， 所 述响应携带所述热度信息同步节点分配的能緩存所述分组域业务的第二基 站的位置信息； 所述转发单元， 用于根据所述位置信息将所述分组域业务 发送给所述第二基站， 以便所述第二基站緩存所述分组域业务并根据预设 的函数更新所述分组域业务的当前热度值。
可选的， 还可以包括： 第三发送单元， 第三接收单元和删除单元， 其 中， 所述第三发送单元， 用于向所述热度信息同步节点发送删除緩存内容 的请求； 所述第三接收单元， 用于接收所述热度信息同步节点发送删除緩 存内容的响应； 所述删除单元， 用于根据所述删除緩存内容的响应删除本 地緩存内容的分组域业务。
所述装置中各个单元的功能和作用的实现过程详见上述方法中对应的 步骤， 在此不再贅述。
相应的， 本发明实施例还提供一种緩存数据的协同分布緩存装置， 所 述装置包括： 第一接收单元和同步单元， 其中， 所述第一接收单元， 用于 接收至少一个第一基站发送同步分组域业务热度值的请求； 所述同步单元， 用于根据所述请求更新已緩存内容列表中所述分组域业务对应的热度值。
可选的， 还可以包括： 更新单元和通知单元， 其中， 所述更新单元， 用于在所述分组域业务的热度没有达到预设緩存门限时， 更新所述预热内 容列表中所述分组域业务的当前热度； 所述通知单元， 用于通知所述第一 基站不緩存所述分组域业务。
可选的， 还可以包括： 第二接收单元， 查询单元， 确定单元， 第一发 送单元和添加单元， 其中， 所述第二接收单元， 用于接收所述第一基站发 送的分配緩存节点的请求； 所述查询单元， 用于查询所维护的已緩存内容 列表、 签约内容列表或预热内容列表是否包括所述分组域业务， 并发送查 询结果； 所述确定单元， 用于在接收到在所述签约内容列表或预热内容列 表中查询到緩存所述分组域业务的位置记录， 且所述分组域业务的热度值 达到緩存门限的查询结果时， 确定第二基站的位置信息； 所述第一发送单 元， 用于向所述第一基站发送响应， 所述响应携带所述第二基站的位置信 息； 所述添加单元， 用于在所述已緩存内容列表中添加所述第二基站的位 置的记录。
所述装置中各个单元的功能和作用的实现过程详见上述方法中对应的 步骤， 在此不再贅述。
相应的， 本发明实施例还提供一种分布式緩存数据热度值的同步系统 , 包括至少一个基站， 以及无线网络控制器或中控基站； 其中， 基站中集成 有高速緩存数据热度值的同步装置 , 以及所述无线网络控制器或中控基站 集成有高速緩存数据的协同分布緩存装置， 其中，
所述高速緩存数据热度值的同步装置， 用于接收用户设备访问分组域 业务的请求， 并响应于所述分组域业务的请求， 若判定所述分组域业务緩 存在本地， 则将所述分组域业务发送给所述用户设备， 并在本地緩存内容 列表中根据预设的函数增加所述分组域业务的当前热度值； 当所述分组域 业务的当前热度值累加到预设阈值时， 将所述分组域业务的当前热度值发 送给所述无线接入网中的热度信息同步节点进行同步， 并将本地緩存的当 前热度值清零；
所述高速緩存数据的协同分布緩存装置， 用于接收所述高速緩存数据 热度值的同步装置发送同步所述分组域业务的当前热度值的请求； 根据所 述请求更新已緩存内容列表中所述分组域业务对应的热度值。
所述高速緩存数据热度值的同步装置包括的单元如上述所示， 在此不 再贅述； 所述高速緩存数据的协同分布緩存装置包括的单元如上所示， 在 此不再赘述。
为了便于本领域技术人员的理解， 下面结合几种应用场景说明 RNC和 NodeB协同的实现过程。
请参阅图 6,为本发明实施例 1提供的一种高速緩存数据热度值的同步 系统的结构示意图； 在该实施例中， 用户设备访问的分组域业务在本地命 中， 即， 用户设备访问的分组域业务记录在第一基站的本地緩存内容列表 (如表 1 所示） 中。 本实施例以多个基站为例， 但并不限于此。 用户设备 访问分组域业务的热度信息在 RNC侧维护 (即建立已緩存内容列表和预热 内容列表， 还可以包括签约信息列表等， 具体依次详见下述的表 2、 表 3和 表 4 ), 热点内容的本地 Cache分布式部署在 RNC所管辖的多个 NodeB上 的本地緩存内容列表中。 在 RNC下属的 NodeB之间新建 IP链路并增加相 应的信令，形成包括 RNC及下属 NodeB在内的网状网络，用于互传已 Cache 的文件及其在 UTRAN侧的存储位置。
表 1
Figure imgf000021_0001
资源名称 当前热度值 存储位置 target.html 20 10.11.2.28 blue.html 18 10.11.2.36
Figure imgf000022_0001
表 3
签约资源
a. html
b.html
表 4
Figure imgf000022_0002
如图 6所示， 包括用户设备 61、 第一基站（NodeB ) 62、 RNC63和第 二基站 64。 在该实施例中， 用户设备 61处在第一基站 62覆盖范围内， 要 求访问分组域业务（ target.html内容）， 该分组域业务在第一基站 62的本地 緩存内容列表中已緩存 (即记录在本地緩存内容列表， 如表 1所示）， 可直 接将 target.html返回给用户设备 61 , 同时对该资源的热度值进行累加 1 , 当 累加的热度值到预设的阈值时，即通过 IUB口向 RNC63同步该累计的热度 值 (即向 RNC63发送同步热度值的请求）， 实现在 RNC63侧的热度汇总， 同 时第一基站 62本地记录 target; 同时， 将该分组域业务的当前热度值清零。
RNC63需要对所管辖的 n个 NodeB的已 Cache内容的热度信息进行维 护， 同时记录该内容存储在哪个 NodeB。
也就是说， 本实施例中， 每个 NodeB在接收到对本地已 Cache内容的 请求时， 需要对本地已 Cache 内容的热度值进行累加， 并在累加的热度值 达到一定阈值后， 向 RNC发送同步热度值的请求。 其中， 本地已 Cache内 容及对应的热度值记录在本地緩存内容列表中。
请参阅图 7,为本发明实施例 2提供的一种高速緩存数据热度值的同步 系统的结构示意图； 用户设备访问的分组域业务在 RNC 管辖下的其他 NodeB中命中， 本实施例以在第二基站中命中为例。
该实施例 1的基础上，用户设备 61向第一 NodeB62发送访问 target.html 的请求， 第一 NodeB62判断该分组域业务在本地緩存内容列表中未緩存， 第一 NodeB62向 RNC63询问该内容是否在其它 NodeB緩存（即命中）， RNC63 收到此询问后， 首先查询已 Cache 内容列表， 发现该内容在第二 NodeB64 的本地緩存内容列表已緩存（如表 5 所示）， 则 RNC63 将第二 NodeB64的地址发送给第一 NodeB62, 同时将该内容对应的当前热度加 1； 表 5
Figure imgf000023_0001
第一 NodeB62在收到 RNC63发送的结果后， 可以通过第一 NodeB62 和第二 NodeB64之间的私有接口建立的 IP链路向第二 NodeB64请求获取 该分组域业务， 并在获取到所述分组域业务后， 将所述分组域业务转发给 用户设备 61。 此外， 第一 NodeB62还可以通过 RNC63从第二 NodeB64获 取所述分组域业务。 其过程本领域熟知技术， 在此不再贅述。
在该实施例中， 第一 NodeB62与第二 NodeB64之间的传输链路， 可以 是如图 7中①所示的物理传输链路， 也可以通过如图 7中②所示的虚拟链 路实现， 即通过 RNC转发。
请参阅图 8,为本发明实施例 3提供的一种高速緩存数据热度值的同步 系统的结构示意图； 用户设备访问的分组域业务在签约内容列表中命中。 在该实施例中， 处理文中涉及到的网元， 还包括如图所示的其他网元， 本 实施例不在——说明。
如图所示， 该实施例 2 的基础上， 用户设备通过第一 NodeB 访问 target.html , 该内容在第一 NodeB未緩存， 第一 NodeB62向 RNC询问是否 在其它 NodeB緩存， RNC收到此询问后， 在已 Cache列表中查询发现没有 緩存该内容的位置记录， 则在签约内容列表中查询， 如果在签约内容列表 中查找到緩存该内容的位置， 且该内容为签约 Cache 内容， 则通知查询方 (即第一 NodeB ) 直接緩存该签约 Cache内容的位置， 以便于从该位置对 应的服务提供商中获取该内容；同时， RNC将该签约 Cache内容的 NodeB IP 地址添加到已 Cache内容列表， 并将该内容对应的当前热度记录为 0。
之后， 第一 NodeB向 RNC同步热度时， 如果 RNC发现在已 Cache内 容列表中， 该内容的热度为 0, 则表明该内容为签约内容， 不对当前热度进 行累加。
其中， 该实施例中， 签约内容可以通过 RNC侧的配置维护终端进行配 置， 对于此部分内容， 不需要达到热度阈值就可以緩存， 在与 SP签约期满 内或 SP要求更新签约内容之前将会一直在第一 NodeB 内緩存。 本实施例 是以第一 NodeB为例， 但并不限于此。
请参阅图 9,为本发明实施例 4提供的一种高速緩存数据热度值的同步 系统的结构示意图； 用户设备访问的分组域业务未命中。 在该实施例中， 处理文中涉及到的网元， 还包括如图所示的其他网元， 本实施例不在—— 说明。
如图所示， 在实施例 3 的基石出上， 用户设备向第一 NodeB发送访问 target.html的请求， 该第一 NodeB判断该内容在第一 NodeB未緩存， 第一 NodeB向 RNC询问是否在其它 NodeB緩存， RNC收到此询问后， 经过在 已 Cache列表和签约内容列表中查询， 均未发现相关记录， 则查询预热内 容列表：
如果在预热内容列表中没有相关记录， 则通知查询方（即第一 NodeB ) 不需要对该内容进行緩存， 同时在预热内容添加一条表项 （即预热内容列 表中无记录时）， 并将当前热度值记录为 1 ;
如果预热内容列表中有记录， 但是对本次访问的热度值累加后仍未达 到预设的緩冲 （Cache ) 门限， 则 RNC对预热内容列表中该表项的当前热 度更新， 同时通知查询方 （即第一 NodeB ) 不需要对该内容进行緩存， 并 告知 SP的 IP地址。 第一 NodeB接收到 RNC的发送后， 将请求通过 Gi口 转发到 IP地址对应的 SP, 并从 SP获取用户设备请求的分组域业务， 并将 该分组域业务发送给用户设备， 之后， 不对从 SP获取的内容緩存。
如果预热内容列表中有记录， 且对本次访问的热度累加后达到 Cache 门限， RNC通知第一 NodeB对 SP返回的内容进行緩存及 SP的 IP地址， 同时 RNC在已 Cache内容列表中添加一条表项， 记录该内容的热度和存储 地址，同时将该内容的记录从预热内容表中删除。第一 NodeB在接收到 RNC 的发送后，将请求通过 Gi口转发到 SP,并从 SP获取用户设备请求的内容， 并在本地緩存。
请参阅图 10, 为本发明实施例 5提供的一种高速緩存数据热度值的同 步系统的结构示意图； 本实施例应用场景为存储位置迁移。 在该实施例中， 处理文中涉及到的网元， 还包括如图所示的其他网元， 本实施例不在—— 说明。
如图所示， 在实施例 4 的基础上， 用户设备通过第一 NodeB 访问 target.html , 该内容在第一 NodeB中未緩存， 且第一 NodeB的緩存空间已 满， 或第一 NodeB维护的本地 Cache内容列表的表项已满， 不能再緩存新 内容， 则第一 NodeB向 RNC询问是否在其它 NodeB命中， 在询问消息中 携带一个字段， 告知 RNC本地緩存已满。 RNC收到此询问后， 在所维护的 三张列表中查询， 如果在签约内容列表中有该内容的记录， 或者在预热内 容列表中有该内容的记录， 且在本次访问的热度累加后已达到 Cache 门限 时， 需要对该内容緩存， 则向除第一 NodeB以外的所有 NodeB发送广播， 要求各 NodeB发送緩存剩余空间， 并根据各 NodeB的发送， 选择其中剩余 空间较大， 且距离第一 NodeB较近的第二 NodeB (以此为例 )对该内容进 行緩存。 RNC将第二 NodeB64的 IP地址发送给第一 NodeB , 同时在 RNC 的已 Cache内容列表中添加该内容的记录， 第一 NodeB将从 SP获取的内 容通过 NodeB间的私有接口发送给第二 NodeB进行緩存， 当然， 而也可以 通过 RNC转发， 本实施例不作限制。
请参阅图 11 , 为本发明实施例 6提供的一种高速緩存数据热度值的同 步系统的结构示意图； 本实施例应用场景为緩存内容删除。
如图所示， 在实施例 5 的基础上， 用户设备通过第一 NodeB 访问 target.html , 该内容在第一 NodeB未緩存， 且第一 NodeB的緩存空间已满， 或第一 NodeB维护的本地 Cache内容列表的表项已满，不能再緩存新内容， 则第一 NodeB向 RNC询问是否在其它 NodeB命中， 在询问消息中携带一 个字段， 告知 RNC本地緩存已满。 RNC收到此询问后， 在所维护的三张列 表中查询， 如果在签约内容列表中有该内容的记录， 或者在预热内容列表 中有该内容的记录， 且对本次访问的热度累加后已达到 Cache 门限， 需要 对该内容緩存。 如果 RNC维护的已 Cache内容列表已满， 或者 RNC查询 了各 NodeB的剩余空间情况后，发现没有适合緩存新内容的 NodeB,则 RNC 从第一 NodeB已经緩存内容中挑选热度相对较低的（如图中 blue.html ),通 知第一 NodeB在緩存中删除， 并存储新内容 target.html， 在第一 NodeB6和 RNC维护的列表中， 需要相应的删除该内容的条目。
请参阅图 12, 为本发明实施例 7提供的一种高速緩存数据热度值的同 步系统的结构示意图；本实施例应用场景为分布式緩存结合中控基站（HUB NodeB )技术的实现方案， 本实施例与上述所有实施例实现过程类似， 其不 同之处， 在基站和无线网络控制器之间设置了中控基站， 所述中控基站与 各个基站连接， 具体如图所示。 在该实施例中， 所述中控基站具有无线网 络控制器的部分功能， 比如， 维护已緩存内容列表、 签约内容列表和 /或预 热内容列表， 还具有用户设备面的功能等， 可以与各个基站进行信息交互 等功能， 其具体实现过程与上述。
本发明实施例中，部署了 Cache的 NodeB与所属的 RNC共同形成网状 网络， 相当于对存储空间进行了扩展， 同时通过 RNC统一调度互通信息， 即使在移动性场景下也可以保证 Cache的命中率。
同时由于本地 Cache部署在 NodeB侧， 升级到 LTE, 只需要将热度信 息的汇总工作转移至位于网络中心位置的 eNodeB, 热度信息的传递可以通 过 X2接口实现， 可以实现向 LTE系统的平滑升级， 节省系统升级成本。
分布式网络的思想下， 通过 RNC协同调度的方式， 解决因单个网元存 储空间有限而导致达到緩存门限的内容不能緩存的问题。
需要说明的是， 在本文中， 诸如第一和第二等之类的关系术语仅仅用 来将一个实体或者操作与另一个实体或操作区分开来， 而不一定要求或者 暗示这些实体或操作之间存在任何这种实际的关系或者顺序。 而且， 术语 "包括"、 "包含"或者其任何其他变体意在涵盖非排他性的包含，从而使得包 括一系列要素的过程、 方法、 物品或者设备不仅包括那些要素， 而且还包 括没有明确列出的其他要素， 或者是还包括为这种过程、 方法、 物品或者 设备所固有的要素。在没有更多限制的情况下， 由语句 "包括一个 ...... "限定 的要素， 并不排除在包括所述要素的过程、 方法、 物品或者设备中还存在 另外的相同要素。
通过以上的实施方式的描述， 本领域的技术人员可以清楚地了解到本 发明可借助软件加必需的通用硬件平台的方式来实现， 当然也可以通过硬 件， 但很多情况下前者是更佳的实施方式。 基于这样的理解， 本发明的技 术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体 现出来， 该计算机软件产品可以存储在存储介质中， 如 ROM/RAM、 磁碟、 光盘等， 包括若干指令用以使得一台计算机设备（可以是个人计算机， 服 务器， 或者网络设备等）执行本发明各个实施例或者实施例的某些部分所 述的方法。
以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领域的 普通技术人员来说， 在不脱离本发明原理的前提下， 还可以作出若干改进 和润饰， 这些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1、 一种分布式緩存数据热度值的同步方法， 应用于无线接入网， 所述 无线接入网包括热度信息同步节点及所述热度信息同步节点所管理的基 站， 其中用于存储热点内容的緩存分布式部署于所述基站， 其特征在于， 所述方法包括：
所述无线接入网的第一基站接收用户设备访问分组域业务的请求； 响应于所述分组域业务的请求， 若所述第一基站判定所述分组域业务 緩存在本地， 则将所述分组域业务发送给所述用户设备， 并在所述第一基 站的本地緩存内容列表中根据预设的函数增加所述分组域业务的当前热度 值；
当所述分组域业务的当前热度值累加到预设阈值时， 所述第一基站将 所述分组域业务的当前热度值发送给所述热度信息同步节点进行同步， 并 将所述第一基站本地緩存的当前热度值清零。
2、 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括： 若所述第一基站判断所述分组域业务没有緩存在本地， 则从所述热度 信息同步节点所维护的已緩存内容列表、 签约内容列表或预热内容列表获 取緩存所述分组域业务的位置信息， 从所述位置信息对应的基站或服务提 供商获取所述分组域业务， 并将获取的所述分组域业务发送给所述用户设 备。
3、 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括： 所述第一基站向所述热度信息同步节点发送分配緩存节点的请求； 所述第一基站接收所述热度信息同步节点的响应， 所述响应携带所述 热度信息同步节点分配的所述无线接入网的能緩存所述分组域业务的第二 基站的位置信息；
所述第一基站根据所述位置信息将所述分组域业务发送给所述第二基 站， 以便所述第二基站緩存所述分组域业务并根据预设的函数更新所述分 组域业务的当前热度值。
4、 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括： 所述第一基站向所述热度信息同步节点发送删除緩存内容的请求； 所述第一基站接收所述热度信息同步节点发送删除緩存内容的响应； 所述第一基站根据所述删除緩存内容的响应删除本地緩存内容的分组 域业务。
5、 根据权利要求 1-4任一所述的方法， 其特征在于， 所述热度信息同 步节点为中控基站或者所述基站所属的基站控制器。
6、 一种緩存数据的协同分布緩存方法， 应用于无线接入网， 所述无线 接入网包括热度信息同步节点及所述热度信息同步节点所管理的基站， 其 特征在于， 包括：
所述热度信息同步节点接收所述无线接入网的第一基站发送的同步分 组域业务热度值的请求；
所述热度信息同步节点根据所述请求更新已緩存内容列表中所述分组 域业务对应的热度值。
7、 根据权利要求 6所述的方法， 其特征在于， 所述方法还包括： 如果所述分组域业务的热度没有达到预设緩存门限， 所述热度信息同 步节点更新预热内容列表中所述分组域业务的当前热度， 并通知所述第一 基站不緩存所述分组域业务。
8、 根据权利要求 6所述的方法， 其特征在于， 所述方法还包括： 所述热度信息同步节点接收所述第一基站发送的分配緩存节点的请 求；
所述热度信息同步节点查询所维护的已緩存内容列表、 签约内容列表 或预热内容列表是否包括所述分组域业务；
如果所述热度信息同步节点在所述签约内容列表或预热内容列表中查 询到緩存所述分组域业务的位置记录， 且所述分组域业务的热度值达到緩 存门限， 则确定所述无线接入网的第二基站的位置信息， 向所述第一基站 发送响应， 所述响应携带所述第二基站的位置信息；
所述热度信息同步节点在所述已緩存内容列表中添加所述第二基站的 位置的记录。
9、 一种分布式緩存数据热度值的同步装置， 应用于无线接入网， 所述 无线接入网包括热度信息同步节点及所述热度信息同步节点所管理的基 站， 其中用于存储热点内容的緩存分布式部署于所述基站， 其特征在于， 所述装置包括：
第一接收单元， 用于接收用户设备访问分组域业务的请求； 判断单元， 用于响应于所述分组域业务的请求， 判断所述分组域业务 是否緩存在本地中， 并发送判断结果；
第一发送单元， 用于在接收到是的判断结果时， 将所述分组域业务发 送给所述用户设备；
第一累计单元， 用于在接收到是的判断结果时， 在所述无线接入网的 第一基站的本地緩存内容列表中根据预设的函数增加所述分组域业务的当 前热度值；
同步单元， 用于在所述分组域业务的当前热度值累加到预设阈值时， 将所述分组域业务的当前热度值发送给所述热度信息同步节点进行同步， 并将所述第一基站本地緩存的当前热度值清零。
10、 根据权利要求 9所述的装置， 其特征在于， 还包括：
获取单元， 用于在接收到所述判断单元发送否的判断结果时， 从所述 热度信息同步节点所维护的已緩存内容列表、 签约内容列表或预热内容列 表获取緩存所述分组域业务的位置信息， 以及从所述位置信息对应的基站 或服务提供商中获取所述分组域业务；
所述第一发送单元， 还用于将获取的所述分组域业务发送给所述用户 设备。
11、 根据权利要求 9或 10所述的装置， 其特征在于， 还包括： 第二发送单元， 用于向所述热度信息同步节点发送分配緩存节点的请 求；
第二接收单元， 用于接收所述热度信息同步节点的响应， 所述响应携 带所述热度信息同步节点分配的所述无线接入网的能緩存所述分组域业务 的第二基站的位置信息；
转发单元， 用于根据所述位置信息将所述分组域业务发送给所述第二 基站， 以便所述第二基站緩存所述分组域业务并根据预设的函数更新所述 分组域业务的当前热度值。
12、 根据权利要求 9或 10所述的装置， 其特征在于， 还包括： 第三发送单元， 用于向所述热度信息同步节点发送删除緩存内容的请 求；
第三接收单元， 用于接收所述热度信息同步节点发送删除緩存内容的 响应； 删除单元， 用于根据所述删除緩存内容的响应删除本地緩存内容的分 组域业务。
13、 一种緩存数据的协同分布緩存装置， 应用于无线接入网， 所述无 线接入网包括热度信息同步节点及所述热度信息同步节点所管理的基站， 其特征在于， 包括：
第一接收单元， 用于接收所述无线接入网的至少一个第一基站发送同 步分组域业务热度值的请求；
同步单元， 用于根据所述请求更新已緩存内容列表中所述分组域业务 对应的热度值。
14、 根据权利要求 13所述的装置， 其特征在于， 还包括：
更新单元， 用于在所述分组域业务的热度没有达到预设緩存门限时， 更新所述预热内容列表中所述分组域业务的当前热度；
通知单元， 用于通知所述第一基站不緩存所述分组域业务。
15、 根据权利要求 13所述的装置， 其特征在于， 还包括：
第二接收单元， 用于接收所述第一基站发送的分配緩存节点的请求； 查询单元， 用于查询所维护的已緩存内容列表、 签约内容列表或预热 内容列表是否包括所述分组域业务， 并发送查询结果；
确定单元， 用于在接收到在所述签约内容列表或预热内容列表中查询 到緩存所述分组域业务的位置记录， 且所述分组域业务的热度值达到緩存 门限的查询结果时， 确定所述无线接入网的第二基站的位置信息；
第一发送单元， 用于向所述第一基站发送响应， 所述响应携带所述第 二基站的位置信息；
添加单元， 用于在所述已緩存内容列表中添加所述第二基站的位置的 记录。
16、 一种分布式緩存数据热度值的同步系统， 包括热度信息同步节点 及所述热度信息同步节点所管理的至少一个基站， 其特征在于， 所述基站 包括如权利要求 9至 12任一项所述的高速緩存数据热度值的同步装置， 所 述热度信息同步节点包括如权利要求 13至 15任一项所述的高速緩存数据 的协同分布緩存装置。
17、 根据权利要求 16所述的系统， 其特征在于， 所述热度信息同步节 点为中控基站或者所述基站所属的基站控制 2Sr.
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