WO2015139250A1 - 协同的内容缓存方法、装置及系统 - Google Patents

协同的内容缓存方法、装置及系统 Download PDF

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Publication number
WO2015139250A1
WO2015139250A1 PCT/CN2014/073722 CN2014073722W WO2015139250A1 WO 2015139250 A1 WO2015139250 A1 WO 2015139250A1 CN 2014073722 W CN2014073722 W CN 2014073722W WO 2015139250 A1 WO2015139250 A1 WO 2015139250A1
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WO
WIPO (PCT)
Prior art keywords
content
sta
cache
caching
cached
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PCT/CN2014/073722
Other languages
English (en)
French (fr)
Inventor
夏斌
杨晨晨
罗俊
Original Assignee
华为技术有限公司
上海交通大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司, 上海交通大学 filed Critical 华为技术有限公司
Priority to PCT/CN2014/073722 priority Critical patent/WO2015139250A1/zh
Priority to CN201480064509.0A priority patent/CN105830488B/zh
Publication of WO2015139250A1 publication Critical patent/WO2015139250A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/10Flow control between communication endpoints
    • H04W28/14Flow control between communication endpoints using intermediate storage
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/30Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices
    • H04W88/182Network node acting on behalf of an other network entity, e.g. proxy

Definitions

  • the present invention relates to communications technologies, and in particular, to a coordinated content caching method, apparatus, and system. Background technique
  • the mobile terminal when performing a multimedia service, the mobile terminal needs to first access the access node (AP,
  • the AP requests multimedia content, and then the AP requests multimedia content from the application server (AS, Application Servicer); when the AS transmits the multimedia content requested by the mobile terminal to the mobile terminal, the AS needs to first send the multimedia content requested by the mobile terminal. To the AP, the AP then transmits the multimedia content to the mobile terminal.
  • AS Application Servicer
  • the convenience of the mobile terminal also makes more and more users accustomed to multimedia services such as web browsing, music downloading, and video viewing through the mobile terminal, and the demand for multimedia services in the network is increasing.
  • the ever-increasing demand for multimedia services by mobile terminal users has led to rapid growth of multimedia data transmission in the network, which has also led to a rapid increase in the amount of network data.
  • Embodiments of the present invention provide a coordinated content caching method, apparatus, and system.
  • the embodiment of the invention provides a collaborative content caching method, including:
  • the proxy server determines a cache scheme of each access node AP, where the cache scheme includes content that the AP needs to cache and/or content that the STA associated with the AP needs to cache;
  • the proxy server sends the corresponding cache scheme of each AP to each AP, so that each AP obtains the cached content according to the received cache scheme.
  • the embodiment of the invention further provides a collaborative content caching method, including:
  • the access node AP receives a cache scheme sent by the proxy server, where the cache scheme includes content that the AP needs to cache and/or content that the site STA associated with the AP needs to cache; The AP obtains the cached content according to the received cache scheme and caches it.
  • the embodiment of the invention further provides a collaborative content caching method, including:
  • the STA receives the cache scheme sent by the access node AP, and the cache scheme includes content that the AP needs to cache and/or content that the STA associated with the AP needs to cache;
  • the STA generates a network information table according to a caching scheme, where the network information table includes content cached by each AP associated with the STA and/or content cached by each STA adjacent to the STA.
  • An embodiment of the present invention provides a proxy server, including:
  • a first determining module configured to determine a caching scheme of each access node AP, where the caching scheme includes content that the AP needs to cache and/or content that the station STA associated with the AP needs to cache;
  • the cache scheme of each AP is sent to each AP, so that each AP obtains the cached content according to the received cache scheme.
  • An embodiment of the present invention provides an access node AP, including:
  • a first receiving module configured to receive a caching scheme sent by the proxy server, where the caching scheme includes content that the AP needs to cache and/or content that the station STA associated with the AP needs to cache; and a cache content obtaining module, configured to receive The caching scheme gets the cached content and caches it.
  • An embodiment of the present invention provides a site STA, including:
  • a first receiving module configured to receive a cache solution sent by the access node AP, where the cache solution includes content that the AP needs to cache and/or content that the STA associated with the AP needs to cache;
  • a generating module configured to generate a network information table according to the cache scheme, where the network information table includes content cached by each AP associated with the STA and/or content cached by each STA adjacent to the STA.
  • the embodiment of the invention provides a collaborative content caching system, including:
  • the embodiments of the present invention provide a method, a device, and a system for coordinating a content cache.
  • the proxy server sends a cache scheme of each AP to each AP, so that each AP obtains the cached content according to the cache scheme, and the content is continuously increased.
  • the way in which the AS sends the content requested by the STA to the STA imposes a heavy burden on the network, reducing the negative of the network. Increased network resource utilization.
  • Embodiment 1 is a flowchart of Embodiment 1 of a collaborative content caching method according to the present invention
  • Embodiment 4 of a collaborative content caching method according to the present invention
  • Embodiment 7 of a collaborative content caching method according to the present invention is a flowchart of Embodiment 7 of a collaborative content caching method according to the present invention.
  • Embodiment 9 of a collaborative content caching method according to the present invention.
  • FIG. 5 is a flowchart of Embodiment 10 of a collaborative content caching method according to the present invention.
  • Embodiment 7 is a schematic structural diagram of Embodiment 1 of a proxy server according to the present invention.
  • Embodiment 8 is a schematic structural diagram of Embodiment 2 of a proxy server according to the present invention.
  • Embodiment 9 is a schematic structural diagram of Embodiment 1 of an access node AP according to the present invention.
  • Embodiment 2 of an access node AP according to the present invention
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a STA of the present invention.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of a STA of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a flowchart of Embodiment 1 of a content caching method according to the present invention. As shown in FIG. 1 , the method in this embodiment may include:
  • Step 101 The proxy server determines a cache scheme of each access node AP, where the cache scheme includes content that the AP needs to cache and/or content that the STA associated with the AP needs to cache; wherein the content may be multimedia content;
  • the station (STA, Station) is a mobile terminal.
  • Step 102 The proxy server sends a corresponding cache scheme of each AP to each AP, so that each AP obtains the cached content according to the received cache scheme.
  • the content is cached in the AS; when the STA obtains the content, it needs to first send a content request to the AP, and then the AP sends a content request to the AS; when the AS sends the content requested by the STA to the STA, the STA needs to be first The requested content is sent to the AP, and the content is sent by the AP to the STA.
  • the proxy server sends a corresponding cache scheme of each AP to each AP, so that each AP acquires the cached content according to the cache scheme.
  • the STA when the STA obtains content, it needs to first send a content request to the AP, and then the AP sends a content request to the AS.
  • the AS sends the content requested by the STA to the STA, the content requested by the STA needs to be sent first.
  • the AP sends the content to the STA; therefore, when the content is increasing and the amount of data is rapidly increasing, the method of sending the content requested by the STA to the STA by the AS brings a great burden to the network;
  • the proxy server sends the cache scheme of each AP to each AP, so that each AP obtains the cached content according to the cache scheme, so that when the STA sends the content request to the AP, the AP may directly send the content requested by the STA to the STA.
  • the network resources occupied by the STA in the process of acquiring content are reduced, the burden on the network is reduced, and the network resource utilization is improved. Meanwhile, the content requested by the STA is directly sent by the AP to the STA, and the STA obtains the content more quickly. Fast, improve user experience.
  • the proxy scheme is used to send the cache scheme of each AP to each AP, so that each AP obtains the cached content according to the cache scheme, and the AS sends the AS to the STA in the case that the content is increasing and the amount of data is rapidly increasing.
  • the proxy server in this embodiment may be located in an AS, an access controller (AC,
  • Wireless Access Point Controller or AP, or the proxy server can be a separate network element.
  • the method further includes: the proxy server determining a content caching scheme, where the content caching scheme includes a content caching requirement. Further, the proxy server in the first embodiment determines a cache scheme of each access node AP, and the proxy server determines, according to the content caching scheme, a cache scheme of each AP.
  • the proxy server determines the content caching scheme according to the local optimal algorithm.
  • the proxy server determines the content caching scheme according to at least one of popularity of the content, lifetime of the content, and optimization criteria;
  • the popularity of the content is used to indicate the number of times the content is accessed;
  • the lifetime of the content is used to indicate the time when the content needs to be saved;
  • the optimization criterion is used to indicate an optimization target when the content caching scheme is determined by the local optimal algorithm.
  • Optimization criteria include: Minimum energy consumption criteria, minimum throughput criteria.
  • determining the content caching scheme according to the popularity of the content and the lifetime of the content can be improved. Cache hit rate.
  • obtaining a content caching scheme according to the optimization criterion can implement different content caching schemes for different optimization goals, so that the content caching scheme can meet different requirements.
  • the proxy server determines the content caching scheme according to the popularity of the content, the lifetime of the content, and the minimum energy consumption criterion, including:
  • the popularity of the content in the formula (1) the lifetime of the content, P H , P B , P s , C H ', C Bi , C Si , U and N may be obtained from the AS.
  • the content caching scheme comprises: a part of the cache space of the AP and/or the STA needs to cache the same content.
  • the same content stored in the part of the cache space is the top content of the popularity, wherein the quantity of the content may be determined according to the size of the part of the cache space and the size of each content;
  • the remaining cache space of the AP and/or the STA stores the content of the top content in the remaining content without duplication until the space is fully stored.
  • the size of a part of the cache space may be determined by the proxy server according to user settings; since the content requested by different mobile terminals is mostly similar and slow changes over a period of time, a part of the cache space of the AP and/or STA may be cached.
  • the same content is used as a constraint when the content optimization scheme is determined by using a local optimization algorithm to reduce the amount of calculation of the algorithm.
  • the content caching scheme is determined according to the popularity of the content, the lifetime of the content, and the optimization criterion, and the caching scheme of each AP is further determined by the content caching scheme, so that the cache hit ratio can be improved, and the caching scheme can be satisfied. Different optimization goals.
  • the proxy server may further include: the proxy server sends the cache content to each AP according to the cache scheme of each AP. .
  • the proxy server when the network is idle, the proxy server sends the cached content to each AP according to the cache scheme of each AP.
  • the cache content is sent to each AP, so that each AP can obtain content according to the cache scheme, so that when the AP receives the content request sent by the STA, the AP can obtain the content from the local cache and send the content to the STA, which is reduced.
  • the burden of the network increases the utilization of network resources.
  • FIG. 2 is a flowchart of Embodiment 4 of a content caching method of the present invention. As shown in FIG. 2, the method in this embodiment may include:
  • Step 201 The access node AP receives the cache solution sent by the proxy server, where the cache scheme includes the content that the AP needs to cache and/or the content that the site STA associated with the AP needs to cache.
  • the AP does not obtain the cached content and caches according to the cache scheme.
  • the STA sends a content request to the AP
  • the AP cannot obtain the content requested by the STA from the local cache and sends the content to the STA.
  • the AP obtains the cached content according to the cache scheme and caches the content, so that the STA can obtain the content requested by the STA from the local cache and send the content to the STA.
  • the AP obtains the cached content according to the cache solution and caches the solution, thereby solving the present problem.
  • the AP does not perform content caching, and thus cannot obtain the content requested by the STA from the local cache and send the content to the STA when receiving the content request sent by the STA, thereby reducing the burden on the network and improving network resource utilization. rate.
  • the AP may further include: sending, by the AP, a cache scheme to the STA associated with the AP, so that the STA generates a network information table according to the cache scheme.
  • the AP sends the cache scheme to the STA associated with the AP by using the system broadcast message.
  • the AP obtains the cached content according to the received cache scheme, and the method includes: the AP requests the application server AS to obtain the cached content according to the received cache scheme; or, the AP receiving proxy server sends the cached protocol according to the AP The cached content sent by the AP.
  • the proxy server when the proxy server stores the content, after the proxy server sends the cache scheme to the AP, the proxy content of the AP may be correspondingly sent to each AP according to the cache scheme, and the AP receiving proxy server sends the cached content to the AP according to the cache scheme of the AP.
  • Cache content when the AP does not receive the cached content sent by the proxy server, the AP may request content from the AS according to the received cache scheme.
  • the embodiment may further include: the AP receives the content request sent by the STA according to the network information table. If the AP caches the content requested by the STA, the AP obtains the content from the local cache and sends the content to the STA.
  • the AP sends the cache scheme to the associated STA, so that the STA generates the network information table according to the cache scheme, and solves the problem that the STA cannot obtain the information cached by each AP associated with the AP in the prior art.
  • the content request is sent, the content request is directly sent to the cached content AP, which reduces the burden on the network and improves the utilization of network resources.
  • the AP may further include: the AP sends the cached content to the STA associated with the AP according to the cache scheme. So that the STA caches the cached content.
  • the AP sends the content of the STA cache associated with the AP to the STA according to the cache scheme.
  • the STA when the STA acquires content, it must send a content request to the AP; And sending the cached content to the STA associated with the AP according to a caching scheme, so that the STA caches the cached content.
  • the STA caches the cached content, which solves the problem that the STA must send a content request to the AP in the prior art, reduces the burden on the network, and improves the network resource utilization.
  • FIG. 3 is a flowchart of Embodiment 7 of the content caching method of the present invention. As shown in FIG. 3, the method in this embodiment may include:
  • Step 301 The station STA receives the cache scheme sent by the access node AP, where the cache scheme includes content that the AP needs to cache and/or content that the STA that is associated with the AP needs to be cached.
  • Step 302 The STA generates network information according to the cache scheme.
  • the network information table includes content cached by each AP associated with the STA and/or content cached by each STA adjacent to the STA.
  • the STA does not obtain the information of the content cached by each AP associated with the AP.
  • the STA cannot directly send the content request to the AP that caches the requested content.
  • the STA generates a network information table according to the cache scheme, so that when the STA sends the content request to the AP, the STA can obtain the information of the AP that has cached the requested content, and can further send the content request to the AP that caches the requested content.
  • the STA generates the network information table according to the cache scheme, and solves the problem that the STA cannot obtain the content of the cached content of each AP associated with the STA in the prior art, and thus cannot directly request the content to the cache when the content request is sent.
  • the AP sends a content request problem, which reduces the burden on the network and improves the utilization of network resources.
  • the method may further include: the STA receives the cached content sent by the AP, and performs caching.
  • the STA does not receive the cached content sent by the AP and caches it.
  • the STA does not receive the cached content sent by the AP and caches it.
  • the STA receives the cached content sent by the AP and caches it.
  • the STA may obtain the content through the local cache, and may also solve the problem that the STA must send the content request to the AP in the prior art by sending a request to the STA adjacent thereto.
  • the network burden has increased the utilization of network resources.
  • Embodiment 9 of a collaborative content caching method according to the present invention, as shown in FIG. 4,
  • the method of this embodiment may include:
  • Step 401 The STA generates a content request.
  • Step 402 it is determined whether the content is cached locally, if the cache is performed, step 403 is performed, if not, step 404 is performed;
  • Step 403 Obtain content from a local cache.
  • Step 404 Query a network information table.
  • Step 405 determining whether the neighboring STA caches the requested content, if the cache is performed, executing step 406, if not, executing step 407;
  • Step 406 Send a content request to the neighboring STA.
  • Step 407 determining whether the associated AP caches the requested content, if the cache is performed, executing step 408, if not, executing step 409;
  • Step 408 Send a content request to the associated AP.
  • Step 409 Send a content request to any associated AP.
  • the STA when the content request is generated, the STA preferentially obtains the content in the local cache, and then sends the content request to the neighboring STA, and finally sends the content request to the AP, which solves the problem that the content in the prior art is increasing and the data volume is rapidly increasing.
  • the manner in which the AS sends the content requested by the STA to the STA imposes a heavy burden on the network, reduces the burden on the network, and improves the utilization of the network resources.
  • Steps 404 to 409 in this embodiment are processes for the STA to send a content request to the cached content-related AP or the neighboring STA according to the network information table and the minimum throughput optimization target.
  • the STA may further use the network information table.
  • other optimization targets send content requests to associated APs or neighboring STAs that have requested content.
  • FIG. 5 is a flowchart of Embodiment 10 of the content caching method of the present invention. As shown in FIG. 5, the method in this embodiment may include:
  • Step 501 The proxy server determines a content caching scheme, and determines each according to the content caching scheme.
  • the content caching scheme includes a content caching requirement; the caching scheme includes content that the AP needs to cache and/or content that the STA associated with the AP needs to cache.
  • Step 502 The proxy server sends a corresponding cache scheme of each AP to each AP.
  • Step 503 The access node AP receives the cache scheme sent by the proxy server, and the cache party The case is sent to the STA associated with the AP;
  • Step 504 The station STA receives the cache scheme sent by the access node AP, and generates a network information table according to the cache scheme.
  • the network information table includes content cached by each AP associated with the STA and/or content cached by each STA adjacent to the STA;
  • Step 505 The proxy server sends the cached content of each AP to each AP according to a cache scheme.
  • Step 506 The AP caches and/or sends the received cached content to the STA associated with the AP according to the cache scheme.
  • Step 507 The STA receives the cached content sent by the AP, and performs caching.
  • the proxy server determines the cache scheme of each AP, and sends the cache scheme to each AP and the STA, and sends the cached content to each AP and STA for buffering, so that the STA is adjacent to the STA when the content is requested.
  • the AP can send the content requested by the STA to the STA, which solves the problem that the AS sends the content requested by the STA to the STA in the prior art in the case of increasing content and rapid data growth.
  • the problem of large burdens reduces the burden on the network and improves the utilization of network resources.
  • the proxy server sends the cache content to each AP.
  • the proxy server may be an independent network element; or the proxy server may be located in the AS.
  • the AS may directly send the cached content to each AP according to the cache scheme of each AP, or may be configured by the proxy.
  • the server sends the cached content to each AP according to the caching scheme of each AP.
  • FIG. 6 is a flowchart of Embodiment 11 of the content caching method of the present invention. As shown in FIG. 6, the method in this embodiment may include:
  • Step 601 The proxy server determines a content caching scheme, and determines a caching scheme of each AP according to the content caching scheme.
  • the content caching scheme includes a content caching requirement; the caching scheme includes content that the AP needs to cache and/or content that the STA associated with the AP needs to cache.
  • Step 602 The proxy server sends a corresponding cache scheme of each AP to each AP.
  • Step 603 The access node AP receives the cache scheme sent by the proxy server, and sends the cache scheme to the STA associated with the AP.
  • Step 604 The station STA receives the cache scheme sent by the access node AP, and generates a network information table according to the cache scheme.
  • the network information table includes content cached by each AP associated with the STA and/or content cached by each STA adjacent to the STA;
  • Step 605 The AP requests the AS to obtain the cached content according to the cache scheme, and caches the cached content according to the cache scheme and/or sends the cached content to the STA associated with the AP.
  • Step 606 The STA receives the cached content sent by the AP, and performs caching.
  • the proxy server determines the cache scheme of each AP, and sends the cache scheme to each AP and the STA, so that the AP requests the AS to obtain the cached content according to the cache scheme, and caches the cached content obtained according to the cache scheme. Or sending to the STA associated with the AP, so that the STA and the neighboring STA or AP can send the content requested by the STA to the STA when the content is requested, which solves the problem that the content in the prior art is increasing and the data volume is rapidly increasing.
  • the manner in which the STA obtains the content in the prior art brings a great burden to the network, reduces the burden on the network, and improves the utilization of the network resource.
  • the AP requests content from the AS according to the cache scheme.
  • the proxy server may be an independent network element; or the proxy server may be located at the AC; or the proxy server may be located at any AP.
  • the proxy server sends other AP corresponding to other APs. Cache scheme; Because the cache space of the AC and the AP is small, the AP can obtain the cache content by requesting content from the AS according to the cache scheme.
  • FIG. 7 is a schematic structural diagram of Embodiment 1 of the proxy server of the present invention.
  • the proxy server of this embodiment may include: a first determining module 701 and a first sending module 702.
  • the first determining module 701 is configured to determine a cache scheme of each access node AP, where the cache scheme includes content that the AP needs to cache and/or content that the STA that is associated with the AP needs to be cached.
  • the first sending module 702 And correspondingly, sending, to the APs, the cache schemes of the APs, so that each AP obtains the cached content according to the received cache scheme.
  • the proxy server of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 8 is a schematic structural diagram of Embodiment 2 of the proxy server according to the present invention.
  • the proxy server of the present embodiment further includes: a second determining module 703, based on the proxy server structure shown in FIG.
  • the second determining module 703 is configured to determine a content caching scheme, So that the first determining module 701 determines a cache scheme of each AP according to a content caching scheme.
  • the embodiment may further include: a second sending module 704, configured to send, after the first sending module 702, the sending buffering scheme of each AP to each AP, according to each The cache scheme of the AP sends the cached content to each AP.
  • a second sending module 704 configured to send, after the first sending module 702, the sending buffering scheme of each AP to each AP, according to each The cache scheme of the AP sends the cached content to each AP.
  • the proxy server of this embodiment may be used to implement the technical solution of the second embodiment or the third embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of an access node AP according to the present invention.
  • the access node AP in this embodiment may include: a first receiving module 901 and a cache content acquiring module 902.
  • the first receiving module 901 is configured to receive a cache solution that is sent by the proxy server, where the cache solution includes content that the AP needs to cache and/or content that the STA that is associated with the AP needs to be cached, and a cache content obtaining module 902. Used to obtain cached content according to the received cache scheme and cache it.
  • the access node AP of this embodiment may be used to perform the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of Embodiment 2 of an access node AP according to the present invention.
  • the access node AP in this embodiment may further include: a sending module 903, configured to: after the first receiving module 901 receives the cache scheme sent by the proxy server, send the cache scheme to the STA associated with the AP, so that the STA is configured according to the cache scheme Generate a network information table.
  • the embodiment may further include: a second sending module 904, configured to send the cached content to the AP according to a caching scheme after the cached content obtaining module 902 obtains the cached content.
  • the associated STA is configured to enable the STA to cache the cached content.
  • the cache content obtaining module 902 may include: a request obtaining module 905, configured to send to the application server according to the received cache scheme. The AS requests to obtain the cached content;
  • the cache content obtaining module 902 may further include: a second receiving module 906, configured to receive, by the proxy server, the cached content sent by the proxy server to the AP according to the cache scheme of the AP.
  • a second receiving module 906 configured to receive, by the proxy server, the cached content sent by the proxy server to the AP according to the cache scheme of the AP.
  • the embodiment may further include: a content request processing module 907, where the content request processing module 907 is configured to receive a content request sent by the STA according to the network information table, if the AP cache has The content requested by the STA is obtained from the local cache and sent to the STA.
  • a content request processing module 907 configured to receive a content request sent by the STA according to the network information table, if the AP cache has The content requested by the STA is obtained from the local cache and sent to the STA.
  • the access node AP in this embodiment may be used to perform the technical solutions in the fifth embodiment and the sixth embodiment.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of a STA of the present invention.
  • the STA of the embodiment may include: a first receiving module 1101 and a generating module 1102.
  • the first receiving module 1101 is configured to receive a cache solution sent by the access node AP, where the cache solution includes content that the AP needs to cache and/or content that the STA associated with the AP needs to cache.
  • a generating module 1102 configured to generate a network information table according to a cache scheme, where the network information table includes content cached by each AP associated with the STA and/or STAs adjacent to the STA Cached content.
  • the STA of the present embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of an access node AP according to the present invention.
  • the STA of the present embodiment may further include: a second receiving module, based on the STA structure shown in FIG. 1103.
  • the second receiving module 1103 is configured to receive the cached content sent by the AP, and perform buffering.
  • the embodiment may further include: a content request processing module 1104, where the content request processing module 1104 is configured to generate a content request, and if the STA caches the requested content, obtain the content from the local cache.
  • a content request processing module 1104 where the content request processing module 1104 is configured to generate a content request, and if the STA caches the requested content, obtain the content from the local cache.
  • the proxy server of this embodiment may be used to implement the technical solution of the eighth embodiment or the ninth embodiment.
  • the implementation principle and the technical effects are similar, and details are not described herein again.
  • the present invention also provides a system for cooperating content caching, including: AC, AS, proxy server, AP, and STA; wherein, the proxy server is as described in the first embodiment and the second embodiment of the proxy server; and the AP is implemented as the access node AP.
  • the STA is as described in the first embodiment and the second embodiment of the STA.
  • the system of the content cache of the present embodiment can be used to implement the technical solution of the method shown in FIG. 5 and FIG. 6.
  • the implementation principle and technical effects are similar, and details are not described herein again.

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Abstract

本发明实施例提供一种协同的内容缓存方法、装置及系统。一种协同的内容缓存方法,包括:代理服务器确定各访问节点AP的缓存方案,所述缓存方案包括该AP需要缓存的内容和/或与该AP关联的站点STA需要缓存的内容;代理服务器将各AP的缓存方案对应发送至各AP,以使各AP根据接收的缓存方案获取缓存内容。本发明实施例可以通过代理服务器将各AP的缓存方案对应发送至各AP,以使各AP根据缓存方案获取缓存内容,减少了网络的负担,提高了网络资源利用率。

Description

协同的内容緩存方法、 装置及系统 技术领域 本发明涉及通信技术,尤其涉及一种协同的内容緩存方法、装置及系统。 背景技术
近年来, 手机等移动终端快速发展, 移动终端的功能越来越强大, 用户 也越来越多。
现有技术中, 移动终端在进行多媒体业务时, 需要首先向访问节点(AP ,
Access Point )请求多媒体内容, 再由 AP 向应用服务器 (AS , Application Servicer )请求多媒体内容; AS 将移动终端所请求的多媒体内容发送给移动 终端时, AS 需要首先将移动终端所请求的多媒体内容发送至 AP , 再由 AP 将多媒体内容发送至移动终端。 移动终端的便利性, 也使得越来越多的用户 习惯于通过移动终端来进行网页浏览、 音乐下载、 视频观看等多媒体业务, 网络中多媒体业务需求不断的增多。 移动终端用户不断增长的多媒体业务需 求, 使得网络中多媒体数据传输增长迅速, 也导致了网络数据量的快速增长。
但是, 在数据量快速增长的情况下, 现有技术采用的 STA获取多媒体内 容的方式给网络带来了很大的负担。 发明内容
本发明实施例提供一种协同的内容緩存方法、 装置及系统。
本发明实施例提供一种协同的内容緩存方法, 包括:
代理服务器确定各访问节点 AP的緩存方案,所述緩存方案包括该 AP需 要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容;
代理服务器将各 AP的緩存方案对应发送至各 AP , 以使各 AP根据接收 的緩存方案获取緩存内容。
本发明实施例又提供一种协同的内容緩存方法, 包括:
访问节点 AP接收代理服务器发送的緩存方案, 所述緩存方案包括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; AP根据接收的緩存方案获取緩存内容, 并进行緩存。
本发明实施例还提供一种协同的内容緩存方法, 包括:
站点 STA接收访问节点 AP发送的緩存方案,所述緩存方案包括该 AP 需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容;
STA根据緩存方案生成网络信息表, 所述网络信息表包括与该 STA 关联的各 AP所緩存的内容和 /或与该 STA相邻的各 STA所緩存的内容。
本发明实施例提供一种代理服务器, 包括:
第一确定模块, 用于确定各访问节点 AP 的緩存方案, 所述緩存方案包 括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 第一发送模块, 用于将各 AP的緩存方案对应发送至各 AP, 以使各 AP 根据接收的緩存方案获取緩存内容。
本发明实施例提供一种访问节点 AP, 包括:
第一接收模块, 用于接收代理服务器发送的緩存方案, 所述緩存方案包 括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 緩存内容获取模块, 用于根据接收的緩存方案获取緩存内容, 并进行緩 存。
本发明实施例提供一种站点 STA, 包括:
第一接收模块, 用于接收访问节点 AP发送的緩存方案, 所述緩存方案 包括该 AP需要緩存的内容和 /或与该 AP关联的 STA需要緩存的内容;
生成模块, 用于根据緩存方案生成网络信息表, 所述网络信息表包括 与该 STA关联的各 AP所緩存的内容和 /或与该 STA相邻的各 STA所緩存 的内容。
本发明实施例提供一种协同的内容緩存系统, 包括:
接入控制器 AC、 应用服务器 AS、 代理服务器、 访问节点 AP和站点 STA, 所述代理服务器采用如前所述的代理服务器, 所述 AP采用如前所 述的 AP , 所述 STA采用如前所述的 STA。
本发明实施例提供一种协同的内容緩存方法、 装置及系统, 通过代理 服务器将各 AP的緩存方案对应发送至各 AP, 以使各 AP根据緩存方案获取 緩存内容,解决了在内容不断增多,数据量快速增长的情况下, 由 AS向 STA 发送 STA所请求内容的方式给网络带来了很大负担的问题, 减少了网络的负 担, 提高了网络资源利用率。 附图说明
图 1为本发明协同的内容緩存方法实施例一的流程图;
图 2为本发明协同的内容緩存方法实施例四的流程图;
图 3为本发明协同的内容緩存方法实施例七的流程图;
图 4为本发明协同的内容緩存方法实施例九的流程图;
图 5为本发明协同的内容緩存方法实施例十的流程图;
图 6为本发明协同的内容緩存方法实施例十一的流程图;
图 7为本发明代理服务器实施例一的结构示意图;
图 8为本发明代理服务器实施例二的结构示意图;
图 9为本发明访问节点 AP实施例一的结构示意图;
图 10为本发明访问节点 AP实施例二的结构示意图;
图 11为本发明站点 STA实施例一的结构示意图;
图 12为本发明站点 STA实施例二的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述,显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提 下所获得的所有其他实施例, 都属于本发明保护的范围。
图 1为本发明协同的内容緩存方法实施例一的流程图, 如图 1所示, 本实施例的方法可以包括:
步骤 101、 代理服务器确定各访问节点 AP的緩存方案, 所述緩存方案 包括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 其中, 内容可以为多媒体内容;
其中, 站点 (STA, Station ) 为移动终端。
步骤 102、 代理服务器将各 AP 的緩存方案对应发送至各 AP, 以使各 AP根据接收的緩存方案获取緩存内容。 现有技术中, 内容都緩存在 AS; STA获取内容时, 需要首先向 AP发送 内容请求, 再由 AP向 AS发送内容请求; AS将 STA所请求的内容发送给 STA时, 需要首先将 STA所请求的内容发送至 AP , 再由 AP将内容发送至 STA。 本发明中, 代理服务器将各 AP的緩存方案对应发送至各 AP, 使得各 AP根据緩存方案获取緩存内容。
现有技术中, 由于 STA获取内容时, 需要首先向 AP发送内容请求, 再 由 AP向 AS发送内容请求; AS将 STA所请求获取的内容发送给 STA时, 需要首先将 STA所请求的内容发送至 AP , 再由 AP将内容发送至 STA; 因 此, 在内容不断增多, 数据量快速增长的情况下, 由 AS向 STA发送 STA所 请求内容的方法给网络带来了很大的负担;通过本发明中代理服务器将各 AP 的緩存方案对应发送至各 AP , 以使各 AP根据緩存方案获取緩存内容, 使得 STA向 AP发送内容请求时, 可以直接由 AP将 STA所请求的内容发送至 STA, 减少了 STA获取内容过程中所占用的网络资源, 减少了网络的负担, 提高了网络资源利用率; 同时, 通过直接由 AP将 STA所请求的内容发送至 STA, 也使得 STA获取内容的速度更快, 改善用户感受。
本实施例, 通过代理服务器将各 AP的緩存方案对应发送至各 AP , 以使 各 AP根据緩存方案获取緩存内容, 解决了在内容不断增多, 数据量快速增 长的情况下,由 AS向 STA发送 STA所请求内容的方式给网络带来了很大负 担的问题, 减少了网络的负担, 提高了网络资源利用率。
可选的, 本实施例中的代理服务器可以位于 AS、 接入控制器 ( AC ,
Wireless Access Point Controller )或 AP , 或者, 代理服务器可以为独立的网 元。
协同的内容緩存方法实施例二
在如图 1所示的协同的内容緩存方法实施例一步骤 101之前,还可以包 括: 代理服务器确定内容緩存方案, 所述内容緩存方案包括内容緩存需求。 进一步的, 实施例一中所述代理服务器确定各访问节点 AP 的緩存方案, 包 括: 代理服务器根据所述内容緩存方案, 确定各 AP的緩存方案。
具体的, 代理服务器根据局部最优算法确定内容緩存方案。
优选的, 代理服务器根据内容的流行度、 内容的生命期以及优化准则中 的至少一种确定内容緩存方案; 其中, 内容的流行度用于表示内容被访问的次数; 内容的生命期用于表 示内容需要保存的时间; 优化准则用于表示通过局部最优算法确定内容緩存 方案时的优化目标。
优化准则包括: 最小能耗准则, 最小吞吐量准则。
由于一段时间内, 少数内容数据占据了大部分的网络流量负载, 即大部 分终端请求的内容相似, 具有一定重复性; 因此, 根据内容的流行度、 内容 的生命期来确定内容緩存方案可以提高緩存命中率。 并且, 根据优化准则获 取内容緩存方案可以实现针对不同的优化目标, 制定不同的内容緩存方案, 使得内容緩存方案可以满足不同的需求。
可选的, 代理服务器根据内容的流行度、 内容的生命期以及最小能耗准 则, 确定内容緩存方案, 包括:
采用公式( 1
Figure imgf000007_0001
其中, y;表示流行度排在第 i位的内容的流行度和生命期; ^表示 STA 无线传输信息的功率; PB表示 AP无线传输信息的功率; Ps表示 AS向 AP 传输信息的功率; 表示与第 j个 STA相邻的 STA是否需要向第 j个 STA 发送流行度排在第 i位的内容,其中,为 1表示需要,为 0表示不需要; 表示与第 j个 STA关联的 AP是否需要向第 j个 STA发送流行度排在第 i位 的内容, 其中, 为 1表示需要, 为 0表示不需要; Ps表示 AS是否需要向 AP 发送 STA所请求的信息, 其中, 为 1表示需要, 为 0表示不需要; CH '表示 STA无线传输流行度排在第 i位的内容所需要的时间; C 表示 AP无线传 输流行度排在第 i位的内容所需要的时间; Cs,表示 AS向 AP传输流行度排在 第 i位的内容所需要的时间; U表示 STA的个数; N表示内容的文件个数。
可选的,公式(1 )中的内容的流行度、 内容的生命期、 PH、 PB、 Ps、 CH'、 CBi、 CSi、 U及 N可以从 AS获得。
优选的, 所述内容緩存方案包括: AP和 /或 STA的一部分緩存空间需要 緩存相同的内容。
优选的, 所述一部分緩存空间所存储的相同的内容为流行度最靠前的若 干个内容, 其中, 内容的数量可以根据所述一部分緩存空间的大小及各内容 的大小确定; 优先的, AP和 /或 STA的剩余緩存空间无重复的存储剩余内容中流行度 靠前的内容, 直到空间全部被存储满。
可选的,一部分緩存空间的大小可以通过代理服务器根据用户设定确定; 由于一段时间内, 不同移动终端请求的内容大部分类似且变化緩慢, 因 此可以将 AP和 /或 STA的一部分緩存空间緩存相同的内容作为采用局部优化 算法确定内容緩存方案时的限制条件, 用以减少算法的计算量。
本实施例中, 通过根据内容的流行度、 内容的生命期和优化准则来确定 内容緩存方案, 并进一步通过内容緩存方案确定各 AP 的緩存方案, 能够提 高緩存命中率, 并能够使緩存方案满足不同的优化目标。
协同的内容緩存方法实施例三
在协同的内容緩存方法实施例一或实施例二中所述代理服务器将各 AP 的緩存方案对应发送至各 AP之后,还可以包括: 代理服务器根据各 AP的緩 存方案, 向各 AP发送緩存内容。
具体的, 在网络空闲时, 代理服务器根据各 AP的緩存方案, 向各 AP发 送緩存内容。
本实施例中, 通过向各 AP发送緩存内容, 以使各 AP能够根据緩存方案 获取内容, 使得 AP在接收到 STA发送的内容请求时, 可以从本地緩存中获 取内容并发送至 STA, 减少了网络的负担, 提高了网络资源利用率。 同时, 通过在网络空闲时向各 AP发送緩存内容的方法, 减少了网络忙碌时的负担。
图 2为本发明协同的内容緩存方法实施例四的流程图, 如图 2所示, 本实施例的方法可以包括:
步骤 201、访问节点 AP接收代理服务器发送的緩存方案, 所述緩存方 案包括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 步骤 202、 AP根据接收的緩存方案获取緩存内容, 并进行緩存。
现有技术中, AP并不会根据緩存方案获取緩存内容并进行緩存, 当 STA 向 AP发送内容请求时, AP也就不能够从本地緩存中获取 STA所请求的内容 并发送至 STA; 本发明中, AP通过根据緩存方案获取緩存内容并进行緩存, 使得 STA向 AP发送内容请求时, AP能够从本地緩存中获取 STA所请求的 内容并发送至 STA。
本实施例, 通过 AP根据緩存方案获取緩存内容并进行緩存, 解决了现 有技术中 AP不进行内容緩存,进而不能够在接收到 STA发送的内容请求时, 从本地緩存中获取 STA所请求的内容并发送至 STA的问题, 减少了网络的 负担, 提高了网络资源利用率。
协同的内容緩存方法实施例五
在如图 2所示的协同的内容緩存方法实施例三步骤 201之后,还可以包 括: AP将緩存方案发送至与该 AP关联的 STA, 以使所述 STA根据緩存 方案生成网络信息表。
具体的,通过系统广播消息, AP将緩存方案发送至与该 AP关联的 STA。 可选的, 步骤 202中所述 AP根据接收的緩存方案获取緩存内容, 包括: AP根据接收的緩存方案向应用服务器 AS请求获取緩存内容; 或者, AP接 收代理服务器根据该 AP的緩存方案向该 AP发送的緩存内容。
具体的, 当代理服务器存储内容时, 代理服务器向 AP发送緩存方案 之后, 可以根据緩存方案将各 AP的緩存内容对应发送至各 AP, AP接收 代理服务器根据该 AP的緩存方案向该 AP发送的緩存内容;当 AP没有接 收到代理服务器发送的緩存内容时, 则 AP可以根据接收到的緩存方案向 AS请求内容。
可选的, 本实施例还可以包括: AP接收 STA根据网络信息表发送的 内容请求, 若 AP緩存有 STA所请求的内容, 则 AP从本地緩存中获取内 容并发送至 STA。
本实施例, 通过 AP将緩存方案发送至关联的 STA, 以使所述 STA根据 緩存方案生成网络信息表, 解决了现有技术中 STA 不能获得与其关联的各 AP所緩存内容的信息, 进而不能够在发送内容请求时, 直接向緩存有所请求 内容 AP发送内容请求的问题, 减少了网络的负担, 提高了网络资源利用率。
协同的内容緩存方法实施例六
在协同的内容緩存方法实施例四或实施例五的基础上, 所述 AP根据接 收的緩存方案获取緩存内容之后, 还可以包括: AP根据緩存方案将緩存内 容发送至与该 AP关联的 STA, 以使所述 STA将緩存内容进行緩存。
具体的, AP 根据緩存方案获取到緩存内容后, 根据緩存方案, 将需 要与 AP关联的 STA緩存的内容对应发送至 STA。
现有技术中, STA获取内容时, 都必须向 AP发送内容请求; 本发明 中, ΑΡ根据緩存方案将緩存内容发送至与该 AP关联的 STA, 以使 STA 将緩存内容进行緩存。
本实施例,通过将緩存内容发送至 STA,以使 STA将緩存内容进行緩存, 解决了现有技术中 STA必须向 AP发送内容请求的问题,减少了网络的负担, 提高了网络资源利用率。
图 3为本发明协同的内容緩存方法实施例七的流程图, 如图 3所示, 本实施例的方法可以包括:
步骤 301、 站点 STA接收访问节点 AP发送的緩存方案, 所述緩存方 案包括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 步骤 302、 STA根据緩存方案生成网络信息表, 所述网络信息表包括 与该 STA关联的各 AP所緩存的内容和 /或与该 STA相邻的各 STA所緩存 的内容。
现有技术中, STA并不能获得与其关联的各 AP所緩存内容的信息, 当 STA向 AP发送内容请求时, STA也就不能够直接向緩存有所请求内容 的 AP发送内容请求; 本发明中, STA根据緩存方案生成网络信息表, 使 得 STA向 AP发送内容请求时, 能够获得已经緩存有所请求内容的 AP的 信息, 并进一步能够向緩存有所请求内容的 AP发送内容请求。
本实施例, 通过 STA根据緩存方案生成网络信息表, 解决了现有技 术中 STA不能获得与其关联的各 AP所緩存内容的信息,进而不能够在发 送内容请求时, 直接向緩存有所请求内容的 AP发送内容请求的问题, 减 少了网络的负担, 提高了网络资源利用率。
协同的内容緩存方法实施例八
在如图 3所示的协同的内容緩存方法实施例七步骤 301之后,还可以包 括: STA接收 AP发送的緩存内容, 并进行緩存。
现有技术中, STA并不接收 AP发送的緩存内容并进行緩存; 本发明中,
STA接收 AP发送的緩存内容并进行緩存。
本实施例中,通过将内容緩存到 STA, STA可以通过本地緩存获取内容, 还可以通过向与其相邻的 STA发送个请求, 解决了现有技术中 STA必须向 AP发送内容请求的问题, 减少了网络负担, 提高了网络资源利用率。
图 4为本发明协同的内容緩存方法实施例九的流程图, 如图 4所示, 本实施例的方法可以包括:
步骤 401、 STA产生内容请求;
步骤 402、判断本地是否緩存有所请求的内容,若緩存则执行步骤 403, 若没有緩存则执行步骤 404;
步骤 403、 从本地緩存中获取内容;
步骤 404、 查询网络信息表;
步骤 405、 判断相邻 STA是否緩存有所请求的内容, 若緩存则执行步 骤 406, 若没有緩存则执行步骤 407;
步骤 406、 向相邻 STA发送内容请求;
步骤 407、 判断关联 AP是否緩存有所请求的内容, 若緩存则执行步 骤 408 , 若没有緩存则执行步骤 409;
步骤 408、 向关联 AP发送内容请求;
步骤 409、 向任一关联 AP发送内容请求。
本实施例中, STA在产生内容请求时, 优先在本地緩存中获取内容, 其次向相邻 STA发送内容请求, 最后向 AP发送内容请求, 解决了现有技 术中内容不断增多,数据量快速增长的情况下, 由 AS向 STA发送 STA所请 求内容的方式给网络带来了很大负担的问题, 减少了网络的负担, 提高了网 络资源利用率。
本实施例步骤 404〜步骤 409为 STA根据网络信息表和最小吞吐量优化目 标向緩存有所请求内容关联 AP或相邻 STA发送内容请求的处理流程; 可 选的, STA还可以根据网络信息表和其他优化目标向緩存有所请求内容的 关联 AP或相邻 STA发送内容请求。
图 5为本发明协同的内容緩存方法实施例十的流程图, 如图 5所示, 本实施例的方法可以包括:
步骤 501、 代理服务器确定内容緩存方案, 并根据内容緩存方案确定各
AP的緩存方案;
其中, 内容緩存方案包括内容緩存需求; 緩存方案包括该 AP需要緩存 的内容和 /或与该 AP关联的站点 STA需要緩存的内容。
步骤 502、 代理服务器将各 AP的緩存方案对应发送至各 AP;
步骤 503、访问节点 AP接收代理服务器发送的緩存方案, 并将緩存方 案发送至与该 AP关联的 STA;
步骤 504、 站点 STA接收访问节点 AP发送的緩存方案, 并根据緩存 方案生成网络信息表;
其中, 所述网络信息表包括与该 STA关联的各 AP所緩存的内容和 / 或与该 STA相邻的各 STA所緩存的内容;
步骤 505、 代理服务器根据緩存方案将各 AP的緩存内容对应发送至 各 AP;
步骤 506、 AP根据緩存方案将接收到的緩存内容进行緩存和 /或发送至 与该 AP关联的 STA;
步骤 507、 STA接收 AP发送的緩存内容, 并进行緩存。
本实施例中, 代理服务器确定各 AP 的緩存方案, 将緩存方案对应发送 至各 AP及 STA,并将緩存内容对应发送至各 AP及 STA进行緩存,使得 STA 在内容请求时与其相邻的 STA 或 AP 能够将 STA 所请求的内容发送至该 STA, 解决了现有技术中在内容不断增多, 数据量快速增长的情况下, 由 AS 向 STA发送 STA所请求内容的方式给网络带来了很大负担的问题, 减少了 网络的负担, 提高了网络资源利用率。
本实施例中, 代理服务器向各 AP发送緩存内容;
可选的, 代理服务器可以为独立的网元; 或者, 代理服务器也可以位于 AS , 当代理服务器位于 AS时, 可以由 AS直接根据各 AP的緩存方案向 各 AP发送緩存内容, 也可以由代理服务器根据各 AP的緩存方案向各 AP 发送緩存内容。
图 6为本发明协同的内容緩存方法实施例十一的流程图,如图 6所示, 本实施例的方法可以包括:
步骤 601、 代理服务器确定内容緩存方案, 并根据内容緩存方案确定各 AP的緩存方案;
其中, 内容緩存方案包括内容緩存需求; 緩存方案包括该 AP需要緩存 的内容和 /或与该 AP关联的站点 STA需要緩存的内容。
步骤 602、 代理服务器将各 AP的緩存方案对应发送至各 AP;
步骤 603、访问节点 AP接收代理服务器发送的緩存方案, 并将緩存方 案发送至与该 AP关联的 STA; 步骤 604、 站点 STA接收访问节点 AP发送的緩存方案, 并根据緩存 方案生成网络信息表;
其中, 所述网络信息表包括与该 STA关联的各 AP所緩存的内容和 / 或与该 STA相邻的各 STA所緩存的内容;
步骤 605、 AP根据緩存方案向 AS请求获取緩存内容, 并根据緩存方 案将获取到的緩存内容进行緩存和 /或发送至与该 AP关联的 STA;
步骤 606、 STA接收 AP发送的緩存内容, 并进行緩存。
本实施例中, 代理服务器确定各 AP 的緩存方案, 将緩存方案对应发送 至各 AP及 STA,使得 AP根据緩存方案向 AS请求获取緩存内容并根据緩存 方案将获取到的緩存内容进行緩存和 /或发送至与该 AP 关联的 STA, 使得 STA在内容请求时与其相邻的 STA或 AP能够将 STA所请求的内容发送至该 STA, 解决了现有技术中在内容不断增多, 数据量快速增长的情况下, 现有 技术中 STA获取内容的方式给网络带来了很大的负担的问题, 减少了网络的 负担, 提高了网络资源利用率。
本实施例中, AP根据緩存方案向 AS请求内容;
可选的,代理服务器可以为独立的网元;或者,代理服务器可以位于 AC; 或者, 代理服务器可以位于任一 AP , 当代理服务器位于某一 AP时, 代理服 务器向其他 AP发送其他各 AP对应的緩存方案; 由于 AC及 AP的緩存空间 较小, 因此可以采用 AP根据緩存方案向 AS请求内容的方式获取緩存内容。
图 7为本发明代理服务器实施例一的结构示意图, 如图 7所示, 本实 施例的代理服务器可以包括: 第一确定模块 701和第一发送模块 702。其中, 第一确定模块 701 , 用于确定各访问节点 AP的緩存方案, 所述緩存方案包括 该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 第一 发送模块 702, 用于将各 AP的緩存方案对应发送至各 AP , 以使各 AP根据 接收的緩存方案获取緩存内容。
本实施例的代理服务器, 可以用于执行图 1所示方法实施例的技术方 案, 其实现原理和技术效果类似, 此处不再贅述。
图 8为本发明代理服务器实施例二的结构示意图, 如图 8所示, 本实 施例的代理服务器在图 7所示代理服务器结构的基础上, 进一步地, 还可 以包括: 第二确定模块 703 , 该第二确定模块 703 , 用于确定内容緩存方案, 以使所述第一确定模块 701根据内容緩存方案确定各 AP的緩存方案。
可选的,本实施例还可以包括: 第二发送模块 704,该第二发送模块 704, 用于在所述第一发送模块 702将各 AP的发送緩存方案对应发送至各 AP之 后, 根据各 AP的緩存方案, 向各 AP发送緩存内容。
本实施例的代理服务器, 可以用于执行实施例二或实施例三的技术方 案, 其实现原理和技术效果类似, 此处不再贅述。
图 9为本发明访问节点 AP实施例一的结构示意图, 如图 9所示, 本 实施例的访问节点 AP 可以包括: 第一接收模块 901和緩存内容获取模块 902。 其中, 第一接收模块 901 , 用于接收代理服务器发送的緩存方案, 所 述緩存方案包括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩 存的内容;緩存内容获取模块 902 ,用于根据接收的緩存方案获取緩存内容, 并进行緩存。
本实施例的访问节点 AP , 可以用于执行图 2所示方法实施例的技术 方案, 其实现原理和技术效果类似, 此处不再贅述。
图 10为本发明访问节点 AP实施例二的结构示意图, 如图 10所示, 本实施例的访问节点 AP在图 9所示访问节点 AP结构的基础上, 进一步 地, 还可以包括: 第一发送模块 903 , 该第一发送模块 903 , 用于在所述第 一接收模块 901接收代理服务器发送的緩存方案之后, 将緩存方案发送至与 该 AP关联的 STA, 以使所述 STA根据緩存方案生成网络信息表。
可选的 ,本实施例还可以包括:第二发送模块 904,该第二发送模块 904, 用于在所述緩存内容获取模块 902获取緩存内容之后,根据緩存方案将緩存 内容发送至与该 AP关联的 STA, 以使所述 STA将緩存内容进行緩存; 可选的, 所述緩存内容获取模块 902 可以包括: 请求获取模块 905 , 该请求获取模块 905 ,用于根据接收的緩存方案向应用服务器 AS请求获取緩 存内容;
可选的, 所述緩存内容获取模块 902还可以包括: 第二接收模块 906, 该第二接收模块 906, 用于接收代理服务器根据该 AP的緩存方案向该 AP 发送的緩存内容。
可选的, 本实施例还可以包括: 内容请求处理模块 907, 内容请求处理 模块 907, 用于接收 STA根据网络信息表发送的内容请求, 若 AP緩存有 STA所请求的内容, 则从本地緩存中获取内容并发送至 STA。
本实施例的访问节点 AP , 可以用于执行实施例五、 实施例六的技术 方案, 其实现原理和技术效果类似, 此处不再贅述。
图 11为本发明站点 STA实施例一的结构示意图, 如图 11所示, 本 实施例的站点 STA可以包括: 第一接收模块 1101和生成模块 1102。 其中, 第一接收模块 1101 , 该第一接收模块 1101 , 用于接收访问节点 AP发送的 緩存方案,所述緩存方案包括该 AP需要緩存的内容和 /或与该 AP关联的 STA 需要緩存的内容; 生成模块 1 102, 该生成模块 1102, 用于根据緩存方案生 成网络信息表,所述网络信息表包括与该 STA关联的各 AP所緩存的内容 和 /或与该 STA相邻的各 STA所緩存的内容。
本实施例的站点 STA,可以用于执行图 3所示方法实施例的技术方案, 其实现原理和技术效果类似, 此处不再贅述。
图 12为本发明访问节点 AP实施例二的结构示意图, 如图 12所示, 本实施例的站点 STA在图 11所示站点 STA结构的基础上, 进一步地, 还 可以包括: 第二接收模块 1103 , 该第二接收模块 1103 , 用于接收 AP发送 的緩存内容, 并进行緩存。
可选的, 本实施例还可以包括: 内容请求处理模块 1104, 该内容请求 处理模块 1104, 用于产生内容请求, 若该 STA緩存有所请求的内容, 则从本 地緩存中获取内容。
本实施例的代理服务器, 可以用于执行实施例八或实施例九的技术方 案, 其实现原理和技术效果类似, 此处不再贅述。
本发明还提供一种协同的内容緩存的系统, 包括: AC、 AS、 代理服 务器、 AP和 STA; 其中, 代理服务器如代理服务器实施例一、 实施例二 中所述; AP如访问节点 AP实施例一、 实施例二中所述; STA如站点 STA 实施例一、 实施例二中所述。
本实施例的协同的内容緩存的系统, 可以用于执行图 5、 图 6所示方 法实施例的技术方案, 其实现原理和技术效果类似, 此处不再贅述。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: ROM, RAM, 磁碟或者光盘等各种可以存储程序代码的介 最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种协同的内容緩存方法, 其特征在于, 包括:
代理服务器确定各访问节点 AP的緩存方案,所述緩存方案包括该 AP需 要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容;
代理服务器将各 AP的緩存方案对应发送至各 AP, 以使各 AP根据接收 的緩存方案获取緩存内容。
2、 根据权利要求 1 所述的方法, 其特征在于, 所述代理服务器确定各 AP的緩存方案之前, 还包括:
代理服务器确定内容緩存方案, 所述内容緩存方案包括内容緩存需求; 所述代理服务器确定各访问节点 AP的緩存方案, 包括:
代理服务器根据所述内容緩存方案, 确定各 AP的緩存方案。
3、 根据权利要求 2所述的方法, 其特征在于, 所述代理服务器确定内容 緩存方案, 包括:
代理服务器根据局部最优算法, 确定内容緩存方案。
4、 根据权利要求 3所述的方法, 其特征在于, 所述代理服务器根据局部 最优算法, 确定内容緩存方案, 包括:
代理服务器根据内容的流行度、 内容的生命期以及优化准则中的至少一 种确定内容緩存方案;
其中, 内容的流行度用于表示内容被访问的次数;
内容的生命期用于表示内容需要保存的时间;
优化准则用于表示通过局部最优算法确定内容緩存方案时的优化目标。
5、根据权利要求 3所述的方法, 其特征在于, 所述内容緩存方案, 包括: AP和 /或 STA的一部分緩存空间需要緩存相同的内容。
6、 根据权利要求 1〜5任一项所述的方法, 其特征在于, 所述代理服务器 将各 AP的緩存方案对应发送至各 AP, 以使各 AP根据接收的緩存方案获取 緩存内容, 包括:
代理服务器将各 AP的緩存方案对应发送至各 AP, 以使各 AP根据緩存 方案向应用服务器 AS请求获取緩存内容;
或者,
所述代理服务器将各 AP的緩存方案对应发送至各 AP之后, 还包括: 代理服务器根据各 AP的緩存方案, 向各 AP发送緩存内容。
7、 根据权利要求 6 所述的方法, 其特征在于, 所述代理服务器根据各 AP的緩存方案, 向各 AP发送緩存内容, 包括:
在网络空闲时, 代理服务器根据各 AP的緩存方案, 向各 AP发送緩存内 容。
8、 一种协同的内容緩存方法, 其特征在于, 包括:
访问节点 AP接收代理服务器发送的緩存方案, 所述緩存方案包括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容;
AP根据接收的緩存方案获取緩存内容, 并进行緩存。
9、 根据权利要求 8所述的方法, 其特征在于, 所述 AP接收代理服务 器发送的緩存方案之后, 还包括:
AP将緩存方案发送至与该 AP关联的 STA, 以使所述 STA根据緩存 方案生成网络信息表。
10、 根据权利要求 9所述的方法, 其特征在于, 所述 AP将緩存方案 发送至与该 AP关联的 STA, 包括: 通过系统广播消息, AP将緩存方案 发送至与该 AP关联的 STA。
1 1、 根据权利要求 8〜10任一项所述的方法, 其特征在于, 所述 AP根 据接收的緩存方案获取緩存内容之后, 还包括:
AP根据緩存方案将緩存内容发送至与该 AP关联的 STA, 以使所述 STA将緩存内容进行緩存。
12、 根据权利要求 8〜1 1任一项所述的方法, 其特征在于, 所述 AP根 据接收的緩存方案获取緩存内容, 包括: AP根据接收的緩存方案向应用服务 器 AS请求获取緩存内容;
或者,
AP接收代理服务器根据该 AP的緩冲方案向该 AP发送的緩存内容。
13、 根据权利要求 9所述的方法, 其特征在于, 还包括:
AP接收 STA根据网络信息表发送的内容请求, 若 AP緩存有 STA所 请求的内容, 则 AP从本地緩存中获取内容并发送至 STA。
14、 一种协同的内容緩存方法, 其特征在于, 包括:
站点 STA接收访问节点 AP发送的緩存方案,所述緩存方案包括该 AP 需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容;
STA 根据緩存方案生成网络信息表, 所述网络信息表包括与该 STA 关联的各 AP所緩存的内容和 /或与该 STA相邻的各 STA所緩存的内容。
15、根据权利要求 14所述的方法, 其特征在于, 所述 STA接收 AP发送 的緩存方案之后, 还包括:
STA接收 AP发送的緩存内容, 并进行緩存。
16、 根据权利要求 15所述的方法, 其特征在于, 还包括:
STA产生内容请求, 若该 STA緩存有所请求的内容, 则该 STA从本 地緩存中获取内容。
17、 根据权利要求 16所述的方法, 其特征在于, 还包括:
若该 STA没有緩存, 则该 STA根据网络信息表向緩存有所请求内容 的关联 AP或相邻 STA发送内容请求。
18、 根据权利要求 16所述的方法, 其特征在于, 还包括:
若该 STA没有緩存, 则该 STA根据网络信息表和优化目标向緩存有 所请求内容的关联 AP或相邻 STA发送内容请求。
19、 根据权利要求 18 所述的方法, 其特征在于, 所述优化目标包括 最小吞吐量;
该 STA根据网络信息表和最小吞吐量向緩存有所请求内容关联 AP或 相邻 STA发送内容请求, 包括:
若相邻 STA緩存, 则向相邻 STA发送内容请求;
若相邻 STA没有緩存而关联 AP緩存,则向该关联 AP发送内容请求。
20、 一种代理服务器, 其特征在于, 包括:
第一确定模块, 用于确定各访问节点 AP 的緩存方案, 所述緩存方案包 括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 第一发送模块, 用于将各 AP的緩存方案对应发送至各 AP, 以使各 AP 根据接收的緩存方案获取緩存内容。
21、 根据权利要求 20所述的代理服务器, 其特征在于, 还包括: 第二确定模块, 用于确定内容緩存方案, 以使所述第一确定模块根据内 容緩存方案确定各 AP的緩存方案。
22、 根据权利要求 21所述的代理服务器, 其特征在于, 所述第二确定模 块具体用于: 根据局部最优算法, 确定内容緩存方案。
23、 根据权利要求 22所述的代理服务器, 其特征在于, 所述第二确定模 块具体用于:
根据内容的流行度、 内容的生命期以及优化准则中的至少一种确定内容 緩存方案;
其中, 内容的流行度用于表示内容被访问的次数;
内容的生命期用于表示内容需要保存的时间;
优化准则用于表示通过局部最优算法确定内容緩存方案时的优化目标。
24、 根据权利要求 22所述的代理服务器, 其特征在于, 所述内容緩存方 案, 包括: AP和 /或 STA的一部分緩存空间需要緩存相同的内容。
25、 根据权利要求 20〜24任一项所述的代理服务器, 其特征在于, 还包 括:
第二发送模块, 用于在所述第一发送模块将各 AP 的发送緩存方案对应 发送至各 AP之后, 根据各 AP的緩存方案, 向各 AP发送緩存内容。
26、 根据权利要求 25所述的代理服务器, 其特征在于, 所述第二发送模 块, 具体用于: 在网络空闲时, 根据各 AP的緩存方案, 向各 AP发送緩存内 容。
27、 根据权利要求 20〜26任一项所述的代理服务器, 其特征在于, 所述 代理服务器位于应用服务器 AS、 接入控制器 AC或 AP, 或者, 所述代理服 务器为独立的网元。
28、 一种访问节点 AP, 其特征在于, 包括:
第一接收模块, 用于接收代理服务器发送的緩存方案, 所述緩存方案包 括该 AP需要緩存的内容和 /或与该 AP关联的站点 STA需要緩存的内容; 緩存内容获取模块, 用于根据接收的緩存方案获取緩存内容, 并进行緩 存。
29、 根据权利要求 28所述的 AP, 其特征在于, 还包括:
第一发送模块, 用于在所述第一接收模块接收代理服务器发送的緩存方 案之后, 将緩存方案发送至与该 AP关联的 STA, 以使所述 STA根据緩存 方案生成网络信息表。
30、 根据权利要求 29所述的 AP, 其特征在于, 所述第一发送模块, 具 体用于: 通过系统广播消息, 将緩存方案发送至与该 AP关联的 STA。
31、 根据权利要求 28〜30任一项所述的 AP, 其特征在于, 还包括: 第二发送模块, 用于在所述緩存内容获取模块获取緩存内容之后, 根据 緩存方案将緩存内容发送至与该 AP关联的 STA,以使所述 STA将緩存内 容进行緩存。
32、 根据权利要求 28〜31任一项所述的 AP, 其特征在于, 所述緩存内 容获取模块, 包括:
请求获取模块, 用于根据接收的緩存方案向应用服务器 AS请求获取緩 存内容。
33、 根据权利要求 28〜32任一项所述的 AP, 其特征在于, 所述緩存内 容获取模块, 还包括:
第二接收模块,用于接收代理服务器根据该 AP的緩冲方案向该 AP发 送的緩存内容。
34、 根据权利要求 29所述的 AP, 其特征在于, 还包括:
内容请求处理模块, 用于接收 STA根据网络信息表发送的内容请求, 若 AP緩存有 STA所请求的内容,则从本地緩存中获取内容并发送至 STA。
35、 一种站点 STA, 其特征在于, 包括:
第一接收模块, 用于接收访问节点 AP发送的緩存方案, 所述緩存方案 包括该 AP需要緩存的内容和 /或与该 AP关联的 STA需要緩存的内容;
生成模块, 用于根据緩存方案生成网络信息表, 所述网络信息表包括 与该 STA关联的各 AP所緩存的内容和 /或与该 STA相邻的各 STA所緩存 的内容。
36、 根据权利要求 35所述的 STA, 其特征在于, 还包括:
第二接收模块, 用于接收 AP发送的緩存内容, 并进行緩存。
37、 根据权利要求 36所述的 STA, 其特征在于, 还包括:
内容请求处理模块,用于产生内容请求,若该 STA緩存有所请求的内容, 则从本地緩存中获取内容。
38、根据权利要求 37所述的 STA,其特征在于,所述内容请求处理模块, 还用于: 若该 STA没有緩存, 则根据网络信息表向緩存有所请求内容的关 联 AP或相邻 STA发送内容请求。
39、根据权利要求 37所述的 STA,其特征在于,所述内容请求处理模块, 还用于: 若该 STA没有緩存, 则该 STA根据网络信息表和优化目标向緩 存有所请求内容的关联 AP或相邻 STA发送内容请求。
40、 根据权利要求 39所述的 STA, 其特征在于, 所述优化目标包括最 小吞吐量; 所述内容请求处理模块, 具体用于:
若相邻 STA緩存, 则向相邻 STA发送内容请求;
若相邻 STA没有緩存而关联 AP緩存,则向该关联 AP发送内容请求。
41、 一种协同的内容緩存系统, 其特征在于, 包括: 接入控制器 AC、 应用服务器 AS、 代理服务器、 访问节点 AP和站点 STA, 所述代理服务 器采用权利要求 20〜27任一项所述的代理服务器, 所述 AP采用权利要求 28-34任一项所述的 AP , 所述 STA采用权利要求 35〜40任一项所述的 STA。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1387643A (zh) * 1999-09-01 2002-12-25 奈克斯特威电信公司 用于无线通信系统的分布式高速缓冲存储器
CN101584179A (zh) * 2006-12-21 2009-11-18 朗讯科技公司 支持用户移动性的用于分布式多媒体内容的方法和装置
CN102204324A (zh) * 2011-04-27 2011-09-28 华为技术有限公司 提高移动互联网用户访问速度的方法及设备
CN102244900A (zh) * 2011-07-15 2011-11-16 上海华为技术有限公司 缓存数据热度值的同步方法、分布缓存方法、装置及系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010118774A1 (en) * 2009-04-15 2010-10-21 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for reducing traffic in a communications network
KR20130053249A (ko) * 2011-11-15 2013-05-23 삼성전자주식회사 통신 시스템에서 캐쉬 메모리 관리 방법 및 장치
CN103312725B (zh) * 2013-07-05 2016-05-25 江苏大学 一种基于节点重要程度的内容中心网络缓存判决方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1387643A (zh) * 1999-09-01 2002-12-25 奈克斯特威电信公司 用于无线通信系统的分布式高速缓冲存储器
CN101584179A (zh) * 2006-12-21 2009-11-18 朗讯科技公司 支持用户移动性的用于分布式多媒体内容的方法和装置
CN102204324A (zh) * 2011-04-27 2011-09-28 华为技术有限公司 提高移动互联网用户访问速度的方法及设备
CN102244900A (zh) * 2011-07-15 2011-11-16 上海华为技术有限公司 缓存数据热度值的同步方法、分布缓存方法、装置及系统

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