WO2014000558A1 - 一种cdn路由实现方法和系统 - Google Patents

一种cdn路由实现方法和系统 Download PDF

Info

Publication number
WO2014000558A1
WO2014000558A1 PCT/CN2013/076814 CN2013076814W WO2014000558A1 WO 2014000558 A1 WO2014000558 A1 WO 2014000558A1 CN 2013076814 W CN2013076814 W CN 2013076814W WO 2014000558 A1 WO2014000558 A1 WO 2014000558A1
Authority
WO
WIPO (PCT)
Prior art keywords
content
domain
router
request message
initial
Prior art date
Application number
PCT/CN2013/076814
Other languages
English (en)
French (fr)
Inventor
陶峑郡
郝振武
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 WO2014000558A1 publication Critical patent/WO2014000558A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/64Routing or path finding of packets in data switching networks using an overlay routing layer

Definitions

  • the present invention relates to the field of communications, and in particular, to a content delivery network (CDN) routing implementation method and system.
  • CDN content delivery network
  • the academic community began to study the transformation of the Internet into a content transfer-centric cache forwarding mode, such as changing the basic primitives of communication between hosts from the original IP connection-sending/receiving message format to no connection.
  • Content/data read/subscribe the network device sets the content cache, and resolves the content read request sent by the host. If it hits the local cache, it immediately returns the result, otherwise it continues to route in the network.
  • each content slice has a unique name, using the Uniform Resource Identifier (URI) format, CCNx open source project.
  • URI Uniform Resource Identifier
  • Captain CCNx as a URI scheme, and consider the version, slice and digest signature of the slice.
  • the identifier of a content source slice can be CCNx: a.example.com/video/a.wmv/vl/s3/EFCD1234AB.... , where the last string of numbers represents the slice signature of the slice, and the penultimate s3 Indicates the third slice, vl identifies the version as 1.
  • the first byte of each field indicates the length of the field, and the subsequent is to identify the content of the segment.
  • CCN/NDN naming uses a layered approach to aggregate routing tables, but there are problems with this approach: According to statistics, at present, the top-level domain name has been reached on the Internet. The existing CCN/NDN named routing technology will increase the pressure on the CCN/NDN marginal gateway router routing table. Summary of the invention
  • the main object of the present invention is to provide a CDN route implementation method and system to solve the problem that the routing table of the marginal router (BR) in the CCN/NDN network is too large.
  • a content distribution network CDN routing implementation method includes:
  • the content router receives the content request message of the user, where the request message includes a content identifier Content ID and a content source initial or ID;
  • the content router matches the Content ID in the local autonomous domain, and if it matches, preferentially acquires content in the local autonomous domain; otherwise, forwards the content request message to the content margin router, and the content margin router according to the content source
  • the initial domain ID forwards the content request message to a content initial domain marginal router; the content initial domain marginal router finds the target content in the local autonomous domain by using the Content ID.
  • the content ID is used for intra-domain routing, and the content source initial domain ID is used for inter-domain routing.
  • the method further includes: the user acquiring the target content list; and, the content initial domain margin router returns the found target content to the user.
  • the method further includes: when the content router is powered on, obtaining from an adjacent content router Content routing table information.
  • the method further includes: the content router notifying the neighboring content router to update the content routing table when the local content changes.
  • the method further includes: the domain where the content source is located is changed, and the content directory server updates the corresponding Content ID and the new content source initial domain name CPD.
  • a CDN routing implementation system includes a content router, a content margin router, and a content initial domain marginal router;
  • the content router is configured to receive a content request message of the user, where the request message includes a Content ID and a content source initial domain ID; and the content ID is matched in the local autonomous domain, and if the match is matched, the content is preferentially Obtaining content in the domain; otherwise, forwarding the content request message to the content margin router;
  • the content margin router is configured to forward the content request message to a content initial domain margin router according to the content source initial domain ID;
  • the content initial domain marginal router is configured to find the target content in the local autonomous domain by using the Content ID.
  • the content ID is used for intra-domain routing, and the content source initial domain ID is used for inter-domain routing.
  • the user is further configured to obtain a target content list.
  • the content initial domain marginal router is also arranged to return the found target content to the user.
  • the content router is further configured to obtain content routing table information from an adjacent content router when the power is turned on.
  • the content router is further configured to notify the neighboring content router to update the content routing table when the local content is changed.
  • the system further includes a content directory server configured to update the corresponding Content ID and the new CPD when the domain in which the content source is located changes.
  • the technology of the invention implementing CDN routing can solve the marginal router in the CCN/NDN network
  • the BGP routing table is too large.
  • FIG. 1 is a flowchart of a user node acquiring a target content list according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a content router (CR) acquiring content routing table information from a neighboring CR according to an embodiment of the present invention
  • FIG. 3 is a flowchart of CR update content routing table information according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a principle for acquiring content according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a CDN routing according to Embodiment 1 of the present invention.
  • FIG. 6 is a flowchart of a CDN routing according to Embodiment 2 of the present invention.
  • FIG. 7 is a flowchart of a CDN routing according to Embodiment 3 of the present invention.
  • FIG. 8 is a flowchart of a content directory server sensing a domain in which a content source is located according to an embodiment of the present invention
  • FIG. 9 is a schematic flowchart of implementing CDN routing according to an embodiment of the present invention. detailed description
  • the content router receives a content request message of the user, where the request message includes a content identifier (Content ID) and a content source initial or ID;
  • Content ID content identifier
  • ID content source initial or ID
  • the content router matches the Content ID in the local domain, and if it matches, preferentially obtains content in the local domain; otherwise, the content router forwards the content request message to the content margin router, according to the content margin router
  • the content source initial domain ID forwards the content request message to a content initial domain margin router; the content initial domain margin router finds content in the domain through the Content ID, and returns the target content to the user.
  • a user node obtains a target content list from a content directory server by using a service HTTP request, and the content directory server returns a content ID and a content source initial domain name (CPD), wherein the CPD can be closely integrated with a real social area, such as content.
  • Source www. sina.com.cn/video/a. avi is located in Nanjing, Jiangsu Province, China, and the content is described as WWW. sina. com. cn/video/a. avi@china.j iangsu.nanj ing , where
  • Step 101 The user node sends an HTTP service request to the content server by using the HTTP protocol.
  • the HTTP GET primitive is used as an example.
  • the user obtains the content of the www.sina.com.cn webpage from the content directory server through the HTTP GET primitive.
  • the content directory server may be a web server of the website www.sina.com.cn or an internet search engine;
  • Step 102 The content directory server returns a response message, and the response message carries a content list included in the www.sina.com.cn webpage, and the list is composed of Content ID+CPD.
  • FIG. 2 illustrates a method for obtaining the content ID content routing table information in the domain when the CR1 is powered on.
  • the process shown in FIG. 2 includes the following steps:
  • Step 201 Power on CR1
  • Steps 202-203. CR1 sends a request for obtaining a content routing table information to neighboring nodes according to the configuration.
  • Steps 204-205 The neighboring node returns the known content routing table
  • Step 206 CR1 receives the content routing table returned by the neighboring node, and constructs its own content routing table accordingly.
  • the content of the CR local cache is changed, so that other neighboring nodes are notified to update the content routing table.
  • the process shown in FIG. 3 includes the following steps.
  • Step 301 CR1 finds that the content of the local cache is changed
  • Steps 302-305 Considering the impact of frequent content changes on network performance, CR1 updates according to the local content change policy, which can be updated according to a certain frequency (for example, according to 30 minutes), such as CR. Update the information of the cached content to the surrounding nodes every 30 minutes; or update according to a certain policy, such as updating only the top 10 content of the access frequency.
  • a certain frequency for example, according to 30 minutes
  • the Interest message when the Interest message is received, if the CR determines that the content required by the user does not match in the domain, the Interest message is forwarded to the edge router (BR) of the domain, and the BR is based on the CPD. Forwarding the Interest message to the BR of the content source domain, and the BR of the content source domain finds the content source according to the Content ID, thereby finally obtaining the content according to the content;
  • BR edge router
  • the BR of the path domain may also determine whether the target content exists in the domain according to the Content ID in the Interest message, and if present, may directly return the target content.
  • the cross-domain routing process shown in Figure 5 includes the following steps:
  • Step 501 The CR1 receives a content request message from the user, and the message carries the Content ID and CPD of the content requested by the user.
  • Step 502. CR1 matches the Content ID in the content routing table, and finds that the domain does not cache the content requested by the user;
  • Step 503. CR1 forwards the Interest message directly to BR1 of the domain;
  • Step 504. The BR1 matches the CPD in the routing table, and finds that the CPD corresponds to the BR2 of the AS2. Step 505. The BR1 forwards the Interest message to the BR2.
  • Step 506 The BR2 receives the Interest message, matches the Content ID in the content routing table of the domain, and finally finds the content source, and forwards the Interest message to the content source.
  • the content source receives the Interest message, and delivers the target content to the content requesting user through the reverse path;
  • the path domain finds that the content requested by the user is already cached in the domain, and then performs the following steps:
  • Steps 601-603 are the same as 501-503;
  • Step 604. The BR1 forwards the Interest message to the BR2 of the intermediate domain AS2 according to the CPD; Step 605. The BR1 forwards the Interest message to the BR2;
  • Step 606 The BR2 finds that the content required by the user has been cached in the domain according to the Content ID. Step 607. The BR2 forwards the Interest message to the content cache node.
  • Steps 608-609. The content cache node finally returns the content required by the user to the user in the reverse path.
  • FIG. 7 when the CR receives the content request message of the user, and finds that the content requested by the user is already cached in the local domain, the following steps are performed;
  • Step 701 is the same as step 601;
  • Step 702. CR1 matches the Content ID in the content routing table, and finds that the content requested by the user has been cached in the domain;
  • Step 703. CR1 forwards the Interest message to the content cache node.
  • Steps 704-705 The content cache node finally returns the content requested by the user to the user in the reverse path.
  • the content directory server-aware content source CPD change process shown in Figure 8 includes the following steps:
  • Step 801. The domain where the content source is found is changed, such as the content source cross-domain migration;
  • Step 802. The content source sends a change CPD request message to the content directory server, where the message carries the Content ID of the content to be changed and the new CPD;
  • Step 803. Save the correspondence between the Content ID and the new CPD.
  • Step 804. A reply message is returned.
  • the content source can also be changed by manually modifying the configuration.
  • the operation of the present invention for implementing CDN routing may represent the process shown in FIG. 9, and the process includes the following steps:
  • Step 910 The content router receives a content request message of the user, where the request message includes a Content ID and a content source initial or ID.
  • Step 920 The content router matches the content ID in the local autonomous domain, and if it matches, preferentially obtains content in the local autonomous domain; otherwise, forwards the content request message to the content margin router, and the content margin router according to the Content source initial domain ID, please The message is forwarded to the content initial domain marginal router; the content initial domain marginal router finds the target content in the local autonomous domain through the Content ID.
  • the method of implementing CDN routing in the present invention can solve the problem that the BGP routing table of the marginal router in the CCN/NDN network is too large, whether it is a method or a system.

Landscapes

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

Abstract

本发明公开了一种 CDN路由实现方法和系统,由内容路由器收到用户的内容请求消息,所述请求消息中包含 Content ID和内容源初始域 ID;所述内容路由器在本自治域中匹配所述 Content ID,如果匹配上,则优先在本自治域中获取内容;否则,转发所述内容请求消息至内容边际路由器,内容边际路由器根据所述内容源初始域 ID,将所述内容请求消息转发至内容初始域边际路由器;所述内容初始域边际路由器通过所述 Content ID在本自治域中找到目标内容。本发明实现 CDN路由的技术可以解决 CCN/NDN 网络中的边际路由器 BGP路由表过大的问题。

Description

一种 CDN路由实现方法和系统 技术领域
本发明涉及通信领域, 具体涉及一种内容分发网络( Content Delivery Network, CDN )路由实现方法和系统。 背景技术
目前, 互联网流量中 90%以上的流量都是网页数据、 文件共享、 视频 类的可重复内容, 这些流量采用緩存、 转发的模式更为高效, 而现有的 IP 网络支持的是端到端的传输模型, 在现有互联网流量特征下是低效的。
进几年, 学术界开始研究将互联网改造为以内容传输为中心的緩存转 发模式, 比如将主机之间通信的基本原语从原来 IP的连接 -发送 /接收报文 的形式改为无连接的内容 /数据读取 /订阅, 网络设备设置内容緩存, 并解析 主机发出的内容读取请求, 如果命中本地緩存则立即返回结果, 否则继续 在网络中路由。
在内容中心网络( Content Centric Network, CCN )或者数据命名网络 ( Named Data Networking, NDN ) 中, 每个内容切片有唯一的命名, 采用 统一资源标识(Uniform Resource Identifier, URI ) 的格式, CCNx开源项 目中将 CCNx作为 URI方案, 并考虑切片的版本、 切片和摘要签名。 比如 一 个 内 容 源 切 片 的 标 识 可 以 为 CCNx:a.example.com/video/a.wmv/vl/s3/EFCD1234AB.... , 其中最后的一串 数字表示切片的摘要签名, 倒数第二个 s3表示第 3个切片, vl标识版本为 1。
当上述标识转换到内容切片协议中时, 为了方便路由设备的处理, 采 用长度值 ( Length- Value )的方式进行编码。 仍以上述 URI为例, 报文传输 格式如表 1所示:
Figure imgf000004_0002
表 1
其中每个字段的第一个字节表示字段长度, 后续为标识段的内容。
CCN/NDN命名采用分层的方式来汇聚路由表, 但这种方式存在问题: 根据统计, 目前互联网中, 顶层域名已达到
Figure imgf000004_0001
, 采用现有的 CCN/NDN命名路由技术,会加大 CCN/NDN的边际网关路由器路由表的压 力。 发明内容
有鉴于此,本发明的主要目的在于提供一种 CDN路由实现方法和系统, 以解决 CCN/NDN网络中的边际路由器(BR )路由表过大的问题。
为达到上述目的, 本发明的技术方案是这样实现的:
一种内容分发网络 CDN路由实现方法, 包括:
内容路由器收到用户的内容请求消息, 所述请求消息中包含内容标识 Content ID和内容源初始或 ID;
所述内容路由器在本自治域中匹配所述 Content ID, 如果匹配上, 则优 先在本自治域中获取内容; 否则, 转发所述内容请求消息至内容边际路由 器, 内容边际路由器根据所述内容源初始域 ID, 将所述内容请求消息转发 至内容初始域边际路由器;所述内容初始域边际路由器通过所述 Content ID 在本自治域中找到目标内容。
其中, 所述 Content ID用于域内路由, 所述内容源初始域 ID用于域间 路由。
其中, 该方法还包括: 用户获取目标内容列表; 以及, 所述内容初始 域边际路由器将找到的目标内容返回给用户。
其中, 该方法还包括: 内容路由器在上电时, 从邻接内容路由器获取 内容路由表信息。
其中, 该方法还包括: 内容路由器在本地内容发生变更时, 通知邻接 内容路由器更新内容路由表。
其中, 该方法还包括: 内容源所在的域发生变更, 内容目录服务器更 新相对应的 Content ID与新内容源初始域名 CPD。
一种 CDN路由实现系统, 包括内容路由器、 内容边际路由器、 内容初 始域边际路由器; 其中,
所述内容路由器, 设置为接收用户的内容请求消息, 所述请求消息中 包含 Content ID和内容源初始域 ID;以及在本自治域中匹配所述 Content ID, 如果匹配上, 则优先在本自治域中获取内容; 否则, 转发所述内容请求消 息至内容边际路由器;
所述内容边际路由器, 设置为根据所述内容源初始域 ID, 将所述内容 请求消息转发至内容初始域边际路由器;
所述内容初始域边际路由器, 设置为通过所述 Content ID在本自治域 中找到目标内容。
其中, 所述 Content ID用于域内路由, 所述内容源初始域 ID用于域间 路由。
其中, 所述用户还用于获取目标内容列表;
所述内容初始域边际路由器还设置为将找到的目标内容返回给用户。 其中, 所述内容路由器, 还设置为在上电时, 从邻接内容路由器获取 内容路由表信息。
其中, 所述内容路由器, 还设置为在本地内容发生变更时, 通知邻接 内容路由器更新内容路由表。
其中, 该系统还包括内容目录服务器, 设置为在所述内容源所在的域 发生变更时, 更新相对应的 Content ID与新 CPD。
本发明实现 CDN路由的技术可以解决 CCN/NDN网络中的边际路由器 BGP路由表过大的问题。 附图说明
图 1为本发明实施例的用户节点获取目标内容列表的流程图; 图 2为本发明实施例的内容路由器(CR )从邻接 CR获取内容路由表 信息的流程图;
图 3为本发明实施例的 CR更新内容路由表信息的流程图;
图 4为本发明实施例获取内容的原理示意图;
图 5为本发明实施例一的 CDN路由流程图;
图 6为本发明实施例二的 CDN路由流程图;
图 7为本发明实施例三的 CDN路由流程图;
图 8 为本发明实施例的内容目录服务器感知内容源所在域发生变更的 流程图;
图 9为本发明实施例实现 CDN路由的流程简图。 具体实施方式
为了解决内容分发网络边际路由器路由表过大的问题, 可以应用以下 的内容分发网络跨自治域(Autonomous System, AS ) (以下将自治域简称 为域)路由技术:
内容路由器接收用户的内容请求消息, 所述请求消息中包含内容标识 ( Content ID )和内容源初始或 ID;
所述内容路由器在本域中匹配所述 Content ID, 如果匹配上, 则优先在 本域中获取内容; 否则, 所述内容路由器将所述内容请求消息转发至内容 边际路由器, 由内容边际路由器根据所述内容源初始域 ID, 将所述内容请 求消息转发至内容初始域边际路由器; 所述内容初始域边际路由器通过所 述 Content ID在本域中找到内容, 将该目标内容返回给用户。 参见图 1 , 图 1中, 用户节点通过业务 HTTP请求向内容目录服务器获 取目标内容列表,内容目录服务器返回内容 ID以及内容源初始域名( CPD ), 其 中 CPD 可 以 与 现 实 社会 区 域 紧 密 结 合 , 如 内 容 源 www. sina. com. cn/video/a. avi 所在域为中国江苏省南京市, 则内容描述为 WWW. sina. com. cn/video/a. avi@china.j iangsu.nanj ing , 其 中
WWW. sina. com. cn/video/a. avi为 Content ID, china.j iangsu.nanj ing为 CPD, 图 1所示流程包括以下步驟:
步驟 101. 用户节点通过 HTTP协议, 向内容服务器发送 HTTP业务请 求 , 本实施例以 HTTP GET原语为例 , 如用户通过 HTTP GET原语向内容 目录服务器获取 www.sina.com.cn 网页内容, 内容目录服务器可以是 www.sina.com.cn网站的网络服务器, 或者是互联网搜索引擎;
步驟 102 . 内容目录服务器返回应答消息, 应答消息中携带 www.sina.com.cn网页所包含的内容列表, 该列表由 Content ID+CPD组成。
参见图 2, 图 2中描述了 CR1上电时获取本域中 Content ID内容路由 表信息的方法, 图 2所示流程包括以下步驟:
步驟 201. CR1上电;
步驟 202-203. CR1根据配置, 向周围邻接节点发送获取内容路由表信 息请求;
步驟 204-205. 邻接节点返回所知的内容路由表;
步驟 206. CR1收到邻接节点返回的内容路由表,据此构建自身的内容 路由表。
参见图 3 , 图 3中, CR本地緩存的内容发生变更, 因此通知其他邻接 节点更新内容路由表; 图 3所示流程包括以下步驟
步驟 301. CR1发现本地緩存的内容发生变更;
步驟 302-305. 考虑到频繁的内容变更对网络性能的影响, CR1根据本 地内容变更策略, 按一定的频度(比如可以按照 30分钟) 更新, 比如 CR 每 30分钟向周围节点更新自身緩存内容的变更信息; 或者按照一定的策略 进行更新, 如仅更新访问频率前 10名的内容。
参见图 4, 图 4中, 当收到 Interest (兴趣)消息时, 如果 CR判断用户 所需的内容在本域中没有匹配, 则转发 Interest 消息至该域的边际路由器 ( BR ), BR根据 CPD将 Interest消息转发给内容源域的 BR, 由内容源域 的 BR根据 Content ID找到内容源, 以据此最终获取内容;
另外 , 途径域的 BR也可以根据 Interest消息中的 Content ID判断本域 中是否存在目标内容, 如果存在, 也可以直接返回目标内容。
参见图 5, 图 5所示的跨域路由流程包括以下步驟:
步驟 501. CR1收到来自用户的内容请求消息 Interest消息, 消息中携 带用户请求内容的 Content ID和 CPD;
步驟 502. CR1在内容路由表中匹配 Content ID, 发现本域没有緩存用 户所请求的内容;
步驟 503. CR1将 Interest消息直接转发给本域的 BR1;
步驟 504. BR1在路由表中匹配 CPD, 发现 CPD对应 AS2的 BR2; 步驟 505. BR1将 Interest消息转发给 BR2;
步驟 506. BR2收到 Interest消息,在本域的内容路由表中匹配 Content ID , 最终找到内容源, 并向内容源转发 Interest消息;
步驟 507-508. 内容源收到 Interest消息, 通过反路径传递目标内容给 内容请求用户;
参见图 6, 图 6中, 途径域发现用户请求的内容在本域已经緩存, 则执 行如下步驟:
步驟 601-603同 501-503;
步驟 604. BR1根据 CPD, 转发 Interest消息给中间域 AS2的 BR2; 步驟 605. BR1转发 Interest消息给 BR2;
步驟 606. BR2根据 Content ID发现在本域已经緩存用户所需的内容; 步驟 607. BR2向内容緩存节点转发 Interest消息;
步驟 608-609. 内容緩存节点最终按反路径将用户所需的内容返回给用 户。
参见图 7, 图 7中, CR收到用户的内容请求消息, 发现用户请求的内 容在本域已经緩存, 则执行以下步驟;
步驟 701同步驟 601 ;
步驟 702. CR1在内容路由表中匹配 Content ID , 发现本域中已经緩存 有用户请求的内容;
步驟 703. CR1转发 Interest消息给内容緩存节点;
步驟 704-705. 内容緩存节点最终按反路径将用户所请求的内容返回给 用户。
参见图 8, 图 8所示的内容目录服务器感知内容源 CPD变更的流程包 括以下步驟:
步驟 801. 内容源发现所在的域发生了变更, 如内容源跨域迁移; 步驟 802. 内容源向内容目录服务器发送变更 CPD请求消息, 消息中 携带所需变更的内容的 Content ID以及新 CPD;
步驟 803. 保存 Content ID与新 CPD的对应关系;
步驟 804. 返回应答消息。
在实际应用时, 还可以通过人工修改配置的方式设置内容源的变更。 结合以上描述可见, 本发明实现 CDN路由的操作思路可以表示如图 9 所示的流程, 该流程包括以下步驟:
步驟 910: 内容路由器收到用户的内容请求消息, 所述请求消息中包含 Content ID和内容源初始或 ID。
步驟 920: 所述内容路由器在本自治域中匹配所述 Content ID, 如果匹 配上, 则优先在本自治域中获取内容; 否则, 转发所述内容请求消息至内 容边际路由器, 内容边际路由器根据所述内容源初始域 ID, 将所述内容请 求消息转发至内容初始域边际路由器; 所述内容初始域边际路由器通过所 述 Content ID在本自治域中找到目标内容。
综上所述可见, 无论是方法还是系统, 本发明实现 CDN路由的技术可 以解决 CCN/NDN网络中的边际路由器 BGP路由表过大的问题。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种内容分发网络 CDN路由实现方法, 包括:
内容路由器收到用户的内容请求消息, 所述请求消息中包含内容标识 Content ID和内容源初始或 ID;
所述内容路由器在本自治域中匹配所述 Content ID, 如果匹配上, 则优 先在本自治域中获取内容; 否则, 转发所述内容请求消息至内容边际路由 器, 内容边际路由器根据所述内容源初始域 ID, 将所述内容请求消息转发 至内容初始域边际路由器;所述内容初始域边际路由器通过所述 Content ID 在本自治域中找到目标内容。
2、根据权利要求 1所述的方法,其中,所述 Content ID用于域内路由, 所述内容源初始域 ID用于域间路由。
3、 根据权利要求 1或 2所述的方法, 其中, 该方法还包括: 用户获取 目标内容列表; 以及, 所述内容初始域边际路由器将找到的目标内容返回 给用户。
4、 根据权利要求 1或 2所述的方法, 其中, 该方法还包括: 内容路由 器在上电时, 从邻接内容路由器获取内容路由表信息。
5、 根据权利要求 1或 2所述的方法, 其中, 该方法还包括: 内容路由 器在本地内容发生变更时, 通知邻接内容路由器更新内容路由表。
6、 根据权利要求 1或 2所述的方法, 其中, 该方法还包括: 内容源所 在的域发生变更, 内容目录服务器更新相对应的 Content ID与新内容源初 始域名 CPD。
7、 一种 CDN路由实现系统, 包括内容路由器、 内容边际路由器、 内 容初始域边际路由器; 其中,
所述内容路由器, 设置为接收用户的内容请求消息, 所述请求消息中 包含 Content ID和内容源初始域 ID;以及在本自治域中匹配所述 Content ID, 如果匹配上, 则优先在本自治域中获取内容; 否则, 转发所述内容请求消 息至内容边际路由器;
所述内容边际路由器, 设置为根据所述内容源初始域 ID, 将所述内容 请求消息转发至内容初始域边际路由器;
所述内容初始域边际路由器, 设置为通过所述 Content ID在本自治域 中找到目标内容。
8、根据权利要求 7所述的系统,其中,所述 Content ID用于域内路由, 所述内容源初始域 ID用于域间路由。
9、 根据权利要求 7或 8所述的系统, 其中,
所述用户还用于获取目标内容列表;
所述内容初始域边际路由器还设置为将找到的目标内容返回给用户。
10、 根据权利要求 7或 8所述的系统, 其中, 所述内容路由器, 还设 置为在上电时, 从邻接内容路由器获取内容路由表信息。
11、 根据权利要求 7或 8所述的系统, 其中, 所述内容路由器, 还设 置为在本地内容发生变更时, 通知邻接内容路由器更新内容路由表。
12、 根据权利要求 7或 8所述的系统, 其中, 该系统还包括内容目录 服务器, 设置为在所述内容源所在的域发生变更时, 更新相对应的 Content ID与新 CPD。
PCT/CN2013/076814 2012-06-25 2013-06-05 一种cdn路由实现方法和系统 WO2014000558A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210209758.7 2012-06-25
CN201210209758.7A CN103516606B (zh) 2012-06-25 2012-06-25 一种cdn路由实现方法和系统

Publications (1)

Publication Number Publication Date
WO2014000558A1 true WO2014000558A1 (zh) 2014-01-03

Family

ID=49782210

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/076814 WO2014000558A1 (zh) 2012-06-25 2013-06-05 一种cdn路由实现方法和系统

Country Status (2)

Country Link
CN (1) CN103516606B (zh)
WO (1) WO2014000558A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104270456A (zh) * 2014-10-14 2015-01-07 中国科学院计算技术研究所 基于内容标识的互联网缓存应答系统及其方法
US9241174B1 (en) 2014-11-18 2016-01-19 Concurrent Computer Corporation Demand-based edge caching video content system and methods
WO2017214817A1 (zh) * 2016-06-13 2017-12-21 深圳天珑无线科技有限公司 分布式网络的消息处理方法及节点
US10760657B2 (en) 2015-09-08 2020-09-01 Riekor Corporation Apparatus utilizing planetary gearset coupled to a constant torsion spring

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9979644B2 (en) 2014-07-13 2018-05-22 Cisco Technology, Inc. Linking to content using information centric networking
CN105704171B (zh) * 2014-11-25 2020-07-28 北京奇虎科技有限公司 实现cdn访问的系统和方法
CN106487837B (zh) * 2015-08-27 2019-08-06 北京大学深圳研究生院 向网络中发送和从网络中获取目标数据的方法和装置
WO2017214811A1 (zh) * 2016-06-13 2017-12-21 深圳天珑无线科技有限公司 分布式网络的消息处理方法及节点
WO2017214808A1 (zh) * 2016-06-13 2017-12-21 深圳天珑无线科技有限公司 一种分布式网络的路由方法、节点及系统
CN106817261B (zh) * 2017-02-06 2019-09-06 北京邮电大学 一种用于ndn网络的路由信息更新方法、装置及系统
CN106973037B (zh) * 2017-02-16 2018-09-04 咪咕视讯科技有限公司 一种控制数据传输的方法及系统
CN109561355B (zh) * 2017-09-27 2020-07-17 中国科学院声学研究所 一种ccn/ndn内容注册、内容位置解析和内容路由的系统及方法
CN111934897A (zh) * 2019-05-13 2020-11-13 深圳市茁壮网络股份有限公司 一种数据请求处理方法及系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101540775A (zh) * 2009-04-30 2009-09-23 华为技术有限公司 内容分发方法、装置与内容分发网络系统
US20100077056A1 (en) * 2008-09-19 2010-03-25 Limelight Networks, Inc. Content delivery network stream server vignette distribution
CN101764757A (zh) * 2010-01-20 2010-06-30 华为技术有限公司 内容访问方法、装置和系统
CN102420857A (zh) * 2011-11-18 2012-04-18 北京蓝汛通信技术有限责任公司 操作指令传送和处理方法、传送和缓存服务器及存储系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7613768B2 (en) * 2003-05-19 2009-11-03 Hewlett-Packard Development Company, L.P. Method and system for managing a streaming media service
JP2006072715A (ja) * 2004-09-02 2006-03-16 Hitachi Ltd コンテンツ配信システムおよびコンテンツ配信方法
CN100484069C (zh) * 2007-05-21 2009-04-29 华为技术有限公司 一种文件数据分发方法及相关设备
CN101252590B (zh) * 2008-03-31 2012-04-25 蓝汛网络科技(北京)有限公司 一种流媒体内容分发方法、系统及装置
US9426213B2 (en) * 2008-11-11 2016-08-23 At&T Intellectual Property Ii, L.P. Hybrid unicast/anycast content distribution network system
CN102143199A (zh) * 2010-10-19 2011-08-03 华为技术有限公司 获取内容的方法、节点及内容网络
CN102143211A (zh) * 2010-12-31 2011-08-03 华为技术有限公司 媒体内容的处理方法、设备和系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100077056A1 (en) * 2008-09-19 2010-03-25 Limelight Networks, Inc. Content delivery network stream server vignette distribution
CN101540775A (zh) * 2009-04-30 2009-09-23 华为技术有限公司 内容分发方法、装置与内容分发网络系统
CN101764757A (zh) * 2010-01-20 2010-06-30 华为技术有限公司 内容访问方法、装置和系统
CN102420857A (zh) * 2011-11-18 2012-04-18 北京蓝汛通信技术有限责任公司 操作指令传送和处理方法、传送和缓存服务器及存储系统

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104270456A (zh) * 2014-10-14 2015-01-07 中国科学院计算技术研究所 基于内容标识的互联网缓存应答系统及其方法
CN104270456B (zh) * 2014-10-14 2018-03-30 中国科学院计算技术研究所 基于内容标识的互联网缓存应答系统及其方法
US9241174B1 (en) 2014-11-18 2016-01-19 Concurrent Computer Corporation Demand-based edge caching video content system and methods
US10760657B2 (en) 2015-09-08 2020-09-01 Riekor Corporation Apparatus utilizing planetary gearset coupled to a constant torsion spring
WO2017214817A1 (zh) * 2016-06-13 2017-12-21 深圳天珑无线科技有限公司 分布式网络的消息处理方法及节点

Also Published As

Publication number Publication date
CN103516606B (zh) 2017-08-11
CN103516606A (zh) 2014-01-15

Similar Documents

Publication Publication Date Title
WO2014000558A1 (zh) 一种cdn路由实现方法和系统
CN110313162B (zh) 促进在网络环境中向多个接收者的内容递送的系统和方法
US10924448B2 (en) Content delivery from home networks
Baid et al. Comparing alternative approaches for networking of named objects in the future Internet
US20140173034A1 (en) Content identification, retrieval and routing in the internet
US20130339481A1 (en) Method for content discovery of node in intra-domain and inter-domain in content centric network and node therefor
JP5536362B2 (ja) コンテンツセントリックネットワークにおける通信を円滑化するための方法
US8837483B2 (en) Mapping private and public addresses
US9326042B2 (en) Routing method for inter/intra-domain in content centric network
EP2993853B1 (en) Method for routing and forwarding, and network controller
WO2011150830A1 (zh) 获取内容的方法、节点及内容网络
Han et al. Publisher mobility support in content centric networks
JP2016119665A (ja) 情報指向ネットワーク内のリンクステート情報を用いて、名前ベースのコンテンツルーティングを効率的に行うシステムおよび方法
WO2015043327A1 (zh) 路由方法、设备和系统
WO2011029322A1 (zh) 名址映射系统、数据传输方法及名址映射维护方法
JP2011529221A5 (zh)
EP2928118B1 (en) System and method for dynamic name configuration in content-centric networks
US20150281376A1 (en) System and method for device registration and discovery in content-centric networks
Barakabitze et al. A survey on naming, name resolution and data routing in information centric networking (ICN)
JP2017500679A (ja) メディアリソースフィードバック方法、装置、プログラム及び記録媒体
EP2869510A1 (en) Express header for packets with hierarchically structured variable-length identifiers
EP2719118B1 (en) Routing by resolution
KR20130033252A (ko) 서비스 오버레이 네트워크에서 종단간 QoS 보장형 콘텐츠 전달 방법 및 그 시스템
KR102437289B1 (ko) 정보 중심 네트워크에서 프로듀서 이동성 지원을 위한 패킷 경로 설정 방법 및 장치
JP7466756B2 (ja) 間接通信のためのネットワークノード及びネットワークノードにおける方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13809146

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13809146

Country of ref document: EP

Kind code of ref document: A1