WO2012171315A1 - Système de cache de contenu dans le domaine des paquets d'un contrôleur de réseau radio et procédé de mise en œuvre de ce système - Google Patents

Système de cache de contenu dans le domaine des paquets d'un contrôleur de réseau radio et procédé de mise en œuvre de ce système Download PDF

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Publication number
WO2012171315A1
WO2012171315A1 PCT/CN2011/084851 CN2011084851W WO2012171315A1 WO 2012171315 A1 WO2012171315 A1 WO 2012171315A1 CN 2011084851 W CN2011084851 W CN 2011084851W WO 2012171315 A1 WO2012171315 A1 WO 2012171315A1
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WO
WIPO (PCT)
Prior art keywords
content
packet
rnc
mobile terminal
caching system
Prior art date
Application number
PCT/CN2011/084851
Other languages
English (en)
Chinese (zh)
Inventor
袁知贵
姚强
汤德龙
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012171315A1 publication Critical patent/WO2012171315A1/fr

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Classifications

    • 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
    • H04L67/5681—Pre-fetching or pre-delivering data based on network characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/14—Flow control between communication endpoints using intermediate storage

Definitions

  • the invention relates to a radio access network with packet domain data processing function, in particular to a radio network controller (RNC) packet domain content cache (Content Cache) system and an implementation method thereof.
  • RNC radio network controller
  • Internet Internet content caching and acceleration related applications are very wide. These application systems are all set up at Internet Service Provider (ISP) access points or distributed over the Internet.
  • ISP Internet Service Provider
  • the packet service (PS) provided by mobile operators for mobile users is mostly related to the Internet. Therefore, it is called Mobile Internet.
  • Mobile Internet In order to reduce the end-to-end delay of mobile applications and enhance the mobile user experience, mobile operators often set up content caching (or content acceleration) devices between mobile networks and ISPs. These devices are capable of caching large amounts of data content distributed over the Internet, including web page text, images, videos, files, and more.
  • content caching or content acceleration
  • CP Content Provider
  • An object of the present invention is to provide an RNC packet domain content caching system and an implementation method thereof. It is used to effectively reduce the data traffic of the mobile network itself.
  • a method for implementing an RNC packet domain content caching system includes: setting a content caching system in a mobile network;
  • the RNC After obtaining the content request IP packet of the mobile terminal, the RNC forwards the content request IP packet to the content cache system;
  • the content caching system requests an IP packet according to the content, and queries whether the content requested by the mobile terminal exists in the local cache.
  • the content caching system transmits the content to the mobile terminal; when the content is not present, the content caching system acquires the content through a content server disposed on the network side, and caches the content and Send to mobile terminal.
  • the method further includes: the RNC forwarding the obtained content request IP packet to a network address translation (NAT) or a network address port translation (NAPT) process, and then forwarding the Content caching system.
  • NAT network address translation
  • NAPT network address port translation
  • the method further includes:
  • the RNC requests the IP packets to be filtered according to the preset filtering method.
  • the filtering manner includes:
  • Access Point Name filtering, content request IP filtering, target IP address, destination port, element filtering of one or more elements in the target protocol.
  • the content caching system When the content is present, the content caching system sends the content to the mobile terminal: the content caching system queries and acquires the content requested by the mobile terminal, and sends the content response IP containing the content to the RNC. ; When the content is not present, the content caching system acquires the content through a content server set on the network side, and caches and sends the content to the mobile terminal:
  • the content caching system sends the content request IP packet directly to the content server, and obtains a content response IP packet containing the content that is responded by the content server;
  • the content caching system buffers the content response IP content, and forwards the content response IP packet to the RNC;
  • the RNC forwards the content response IP file to the mobile terminal after NAT or NAPT processing.
  • the content caching system acquires the content through a content server set on the network side, and caches and sends the content to the mobile terminal as:
  • the content caching system forwards the content request IP message to the content server via the RNC and the mobile core network;
  • the RNC forwards the content response IP file to the mobile terminal after NAT or NAPT processing.
  • the method further includes:
  • an RNC packet domain content caching system including: a setting module, an RNC, a content caching system, and a content server;
  • a setting module configured to set a content caching system in a mobile network
  • the RNC is configured to forward the content request IP packet to the content cache system after acquiring the content request IP packet of the mobile terminal; a content caching system, configured to: according to the content request IP packet, query whether there is content requested by the mobile terminal in the local cache; when the content exists, send the content to the mobile terminal, when the content does not exist And acquiring the content through a content server disposed on the network side, and buffering and transmitting the content to the mobile terminal.
  • the content server is configured to save the content, and request an IP packet according to the content, and send the content response IP packet containing the content to the RNC.
  • the present invention has the beneficial effects that the present invention implements the RNC packet domain content caching function by setting a content caching system in a mobile network, which not only effectively reduces the data traffic of the mobile network itself, but also improves the mobile. Quality of service reduces the cost of mobile operators.
  • FIG. 1 is a flowchart of a method for implementing an RNC packet domain content caching system of the present invention
  • FIG. 2 is a schematic diagram of a frame of a RNC packet domain content caching system of the present invention
  • FIG. 3 is a flow chart of RNC packet domain content caching according to the first embodiment of the present invention.
  • FIG. 4 is a flow chart of RNC packet domain content caching according to a second embodiment of the present invention. detailed description
  • FIG. 1 is a flowchart of a method for implementing an RNC packet domain content caching system according to an embodiment of the present invention. As shown in FIG. 1, the steps include:
  • Step 101 Setting a content caching system in the mobile network for caching content from the content server;
  • Step 102 After obtaining the content request IP packet of the mobile terminal, the RNC forwards the content request IP packet to the content cache system.
  • Step 103 The content cache system requests an IP packet according to the content, and queries the local cache. Whether there is content requested by the mobile terminal; when it exists, step 104 is performed, otherwise step 105 is performed;
  • Step 104 When the content exists, the content caching system sends the content to the mobile terminal step 105: when the content is not present, the content caching system acquires the content through a content server set on the network side, and The content is cached and sent to the mobile terminal.
  • the step 102 includes:
  • the RNC forwards the obtained content request IP packet to the content cache system after performing NAT or NAPT processing.
  • the step 102 further includes:
  • the RNC requests the IP packets to be filtered according to the preset filtering method.
  • the filtering manner includes:
  • APN filtering content request IP packet destination IP address, destination port, element filtering of one or more elements in the target protocol.
  • the step 104 includes:
  • the content caching system queries and obtains the content requested by the mobile terminal, and sends the content response IP containing the content to the RNC;
  • the RNC forwards the content response IP file to the mobile terminal after NAT or NAPT processing.
  • the step 105 includes:
  • the content caching system sends the content request IP packet directly to the content server, and obtains a content response IP packet containing the content that is responded by the content server;
  • the content caching system buffers the content of the content response IP packet, and forwards the content response IP packet to the RNC;
  • the RNC forwards the content response IP file to the mobile terminal after performing NAT or NAPT processing.
  • the step 105 may further include:
  • the content caching system forwards the content request IP message to the content server via the RNC and the mobile core network;
  • the RNC forwards the content response IP file to the mobile terminal after NAT or NAPT processing.
  • the method further includes:
  • the content request IP packet and the content response IP packet are packet data packets.
  • the content caching system and the RNC jointly implement the packet domain data content caching function. That is, first, after intercepting the content request IP packet sent by the mobile terminal, the RNC forwards the content request IP packet to the content cache system. Then, the content cache system queries the local cache for the content requested by the user terminal. If not, the content cache system can forward the content request IP packet back to the RNC, and the RNC forwards the content request IP packet to the RNC using the mobile network standard service flow.
  • the mobile core network finally reaches the content server; the content cache system may also directly send the content request IP packet to the content server.
  • the content server requests the IP packet in response to the content, and sends the content of the response to the RNC through the content response IP packet, and is forwarded by the RNC to the content cache system.
  • the content cache system obtains the content response IP packet forwarded by the RNC, and buffers the content of the content response IP packet, and performs a buffer operation (or subsequently), and the content response IP packet is again Forwarded to the RNC, forwarded to the RNC by the RNC Move users.
  • the RNC forwards the packet data of the mobile terminal, the RNC performs NAT or NAPT processing on the mobile terminal to the network or the network to the mobile terminal, so as to implement re-routing.
  • the application supported by the content caching system includes a web application and a peer-to-peer (P2P) application
  • the cacheable content includes but is not limited to webpage text, pictures, videos, and files.
  • FIG. 2 is a schematic diagram of a frame of a packet network domain content caching system of the radio network controller of the present invention. As shown in FIG. 2, the method includes:
  • a setting module 209 configured to set a content caching system in the mobile network for caching content from the content server;
  • the RNC 201 is configured to forward the content request IP packet to the content cache system after acquiring the content request IP packet of the mobile terminal. Further, the RNC 201 is a control center of a radio access network base station device, and can simultaneously manage a plurality of radio base stations 204 while also managing a wireless connection between the mobile terminal 205 and the network.
  • the RNC 201 includes a second generation mobile communication network and a base station controller defined in a third generation mobile communication network.
  • the content caching system 202 is configured to query, according to the content request IP packet, whether there is content requested by the mobile terminal 205 in the local cache, and when the content exists, the content caching system 202 sends the content to the mobile terminal 205. When the content does not exist, the content caching system 202 acquires the content through the content server 208 disposed on the network side, and caches and transmits the content to the mobile terminal 205. Further, the content cache system 202 is responsible for processing the content request IP packet initiated by the mobile terminal 205, and distributing the locally cached content to the mobile terminal 205. If there is no content requested by the mobile terminal 205 in the local cache, the content can be downloaded from the content server 208 and distributed to the mobile terminal 205.
  • the content caching system 202 includes one or several devices having application protocol processing, memory, network, and storage functions, and a content caching system 202 can serve one or more RNCs 201 at the same time.
  • the content caching system 202 can be a stand-alone system or a part of the RNC 201, that is, the RNC 201 and the content caching system 202 can be integrated to form a system 203 having a wireless network control function and a content caching function.
  • the RNC packet domain content caching system further includes:
  • the content server 208 is configured to save the content, and request an IP packet according to the content, and send the content response IP packet containing the content to the RNC 201. Wherein the content is provided by a content provider.
  • the radio base station 204 is configured to perform resource management of the radio interface, and is responsible for communication protocol conversion between the mobile terminal 205 and the RNC 201.
  • the mobile terminal 205 is a communication terminal device having a wireless access function, such as a mobile terminal using GSM or WCDMA wireless technology.
  • the mobile core network 206 is configured to be responsible for the mobile network switching function, and complete functions such as secure access control, location management, and charging of the mobile user.
  • Internet or local area network 207 including the global Internet network provided by the ISP, or the local IP network that the mobile operator operates itself that is not interconnected with the Internet.
  • FIG. 3 is a flowchart showing a packet domain content caching process of a radio network controller according to a first embodiment of the present invention, as shown in FIG. 3, where "representing NAT or NAPT operation, Represents a file system or database, and the steps include:
  • Step 301 Establish a content providing service channel between the mobile terminal and the mobile core network.
  • Step 302 The RNC intercepts the content request IP packet sent by the mobile terminal to the network side, performs filtering according to a preset filtering manner, and matches The content of the filter condition is forwarded to the content cache system after the IP packet is processed by the NAT or the NAPT, and the target IP address of the content request IP packet that meets the filtering condition is modified to the IP address of the content cache system, and then forwarded to the content cache system. ;
  • Step 303 After the content cache system receives the content request IP packet of the mobile terminal, if If the content requested by the mobile terminal exists in the local cache, step 305 is performed. Otherwise, the content cache system requests the content from the content server through the RNC through the RNC. The content server sends the content response IP packet containing the content to the content server.
  • the RNC intercepts the packet, and the RNC forwards the packet to the content cache system after performing NAT or NAPT, that is, the RNC changes the destination address of the packet to the address of the content cache system, and the source address is modified to RNC. The address is forwarded to the content cache system;
  • Step 304 The content cache system obtains the content response IP packet that is responded to by the content server, and performs a local cache operation on the content in the content response IP packet, and performs step 306.
  • Step 305 The content cache system queries the local cache. ;
  • Step 306 The content caching system distributes the content required by the mobile terminal to the mobile terminal via the RNC through the content response IP packet.
  • Step 307 Release the content providing service channel between the mobile terminal and the mobile core network.
  • the preset filtering manner includes APN filtering, target IP address of the IP packet, target port, and element filtering of one or more elements of the target protocol.
  • the destination address of the IP packet requested by the content cache system is the address of the RNC, and the RNC performs NAT or NAPT processing on the packet, that is, the source address of the packet is modified to the address of the mobile terminal, and the target address is modified.
  • the address of the content server Further, the RNC forwards the packet processed by the NAT or the NAPT to the established content request service channel, and finally submits the packet to the content server.
  • the RNC needs to perform NAT or NAPT processing on the content response IP packet, and then forwards the content to the mobile terminal, that is, the RNC needs to modify the destination address of the content response IP packet to the address of the mobile terminal, and the source address is modified to The address of the content server is forwarded to the mobile terminal.
  • FIG. 4 is a flowchart showing a packet domain content caching process of a radio network controller according to a second embodiment of the present invention, as shown in FIG. 4, where "representing NAT or NAPT operation, File system Or database, the steps include:
  • Step 401 Establish a content providing service channel between the mobile terminal and the mobile core network.
  • Step 402 The RNC intercepts the content requesting IP packet sent by the mobile terminal to the network side, performs filtering according to a preset filtering manner, and The content of the filter condition is forwarded to the content cache system after the IP packet is processed by the NAT or the NAPT, and the target IP address of the content request IP packet that meets the filtering condition is modified to the IP address of the content cache system, and then forwarded to the content cache system. ;
  • Step 403 After receiving the content request IP packet of the mobile terminal, if the content cache system finds that the content requested by the mobile terminal exists in the local cache, step 405 is performed. Otherwise, the content cache system does not directly request the content server through the mobile network.
  • Step 404 The content cache system obtains the content response IP packet in response to the content server response, and locally caches the content in the content response IP packet, and performs step 406;
  • Step 405 The content cache system queries the local cache.
  • Step 406 The content caching system distributes the content required by the mobile terminal to the mobile terminal through the content response IP packet.
  • Step 407 Release the content providing service channel between the mobile terminal and the mobile core network.
  • the preset filtering manner includes APN filtering, target IP address of the IP packet, target port, and element filtering of one or more elements of the target protocol.
  • the RNC needs to perform NAT or NAPT processing on the content response IP packet, and then forwards the content to the mobile terminal, that is, the RNC needs to modify the destination address of the content response IP packet to the address of the mobile terminal, and the source address is modified to The address of the content server is forwarded to the mobile terminal.
  • the present invention has the following technical effects:
  • the present invention effectively reduces the data traffic of the mobile core network by deploying the content caching system (content caching node) to the mobile network and using the content caching function as an extended function of the RNC. It further reduces the end-to-end delay of mobile applications, improves the quality of mobile services, improves the mobile user experience, and reduces the cost of mobile operators.
  • content caching system content caching node
  • the invention realizes the RNC packet domain content caching function by setting the content caching system in the mobile network, which not only effectively reduces the data traffic of the mobile network itself, but also improves the quality of the mobile service and reduces the cost of the mobile operator.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un système de cache de contenu dans le domaine des paquets d'un contrôleur de réseau radio (RNC), ainsi qu'un procédé de mise en œuvre de ce système. Ledit procédé de mise en œuvre se déroule de la manière suivante : un système de cache de contenu est mis en place au sein d'un réseau mobile ; après l'acquisition d'un message IP de demande de contenu d'un terminal mobile, un RNC envoie ce message au système de cache de contenu ; le système de cache de contenu demande si le cache local possède le contenu demandé par ledit terminal mobile conformément au message IP de demande de contenu ; lorsque le cache local possède le contenu, le système de cache de contenu envoie le contenu au terminal mobile ; et, lorsque le cache local ne possède pas le contenu, le système de cache de contenu acquiert le contenu par l'intermédiaire d'un serveur de contenu présent du côté réseau, puis il met le contenu en cache et il l'envoie au terminal mobile. La présente invention met en place un système de cache de contenu au sein d'un réseau mobile, ce qui limite efficacement le trafic de données de ce réseau mobile, améliore la qualité du service mobile et réduit les coûts pour les opérateurs de téléphonie mobile.
PCT/CN2011/084851 2011-06-16 2011-12-28 Système de cache de contenu dans le domaine des paquets d'un contrôleur de réseau radio et procédé de mise en œuvre de ce système WO2012171315A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110162671.4A CN102833791A (zh) 2011-06-16 2011-06-16 一种无线网络控制器分组域内容缓存系统及其实现方法
CN201110162671.4 2011-06-16

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WO2012171315A1 true WO2012171315A1 (fr) 2012-12-20

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Families Citing this family (5)

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CN103067516B (zh) * 2012-12-29 2015-12-02 宁波华誉汽车电机有限公司 一种用于移动网络的数据下载方法
EP2819367A1 (fr) * 2013-06-28 2014-12-31 Thomson Licensing Procédé permettant d'extraire, par un terminal client, une partie de contenu d'un contenu multimédia
CN104426948A (zh) * 2013-08-28 2015-03-18 北京闹米科技有限公司 一种网络数据共享系统和方法
CN105340224A (zh) * 2014-05-30 2016-02-17 华为技术有限公司 网络控制方法和装置
CN104243344B (zh) * 2014-10-11 2018-06-19 网宿科技股份有限公司 一种有效数据包捕获方法及请求重定向服务器

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WO2010045330A1 (fr) * 2008-10-14 2010-04-22 Sycamore Networks, Inc. Mise en œuvre de politique de remplacement et de rafraîchissement de contenu pour un réseau de distribution de contenu
CN101848137A (zh) * 2009-03-26 2010-09-29 北京快网科技有限公司 一种应用于三层网络的负载均衡方法和系统
CN101917479A (zh) * 2010-08-20 2010-12-15 北京新岸线网络技术有限公司 一种用于移动网络中改善分组数据业务的方法及装置

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WO2010045330A1 (fr) * 2008-10-14 2010-04-22 Sycamore Networks, Inc. Mise en œuvre de politique de remplacement et de rafraîchissement de contenu pour un réseau de distribution de contenu
CN101848137A (zh) * 2009-03-26 2010-09-29 北京快网科技有限公司 一种应用于三层网络的负载均衡方法和系统
CN101917479A (zh) * 2010-08-20 2010-12-15 北京新岸线网络技术有限公司 一种用于移动网络中改善分组数据业务的方法及装置

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