A Mobility Management Method for Information Center Network Based on Content Popularity

Abstract

The invention discloses a content popularity-based information center network mobility management method, which belongs to the technical field of next-generation Internet technology research. The requester side moves, the content requester sends an Interest packet request, the router in the network receives the Interest message, first searches the local cache, if the local cache has the content, it returns it directly to the requester, otherwise it queries the PIT table; the proxy node according to the content The popularity of is compared with the popularity threshold K; the content source moves to a new location, to the proxy? The node sends a "handover complete" message, the position of the M mark is "2" to indicate the end of the switch, and the position of the K mark is "NULL". The present invention realizes the mobility of mobile nodes in the content-centric network, and based on the mobility management methods of two forms of proxy nodes and network caches, it avoids communication interruption caused by single faulty nodes and link failures; once the proxy node fails, the service cannot continue , the network can automatically choose to perform switching through network caching to ensure normal communication.

Description

technical field [0001] The invention relates to a mobility management method for an information center network based on content popularity, and belongs to the technical field of next-generation Internet technology research. Background technique [0002] Research on the next generation Internet is in full swing and enthusiastically going on. The current Internet is facing unprecedented technical and non-technical challenges, and it is difficult to meet the needs of content distribution, mobility, security and other aspects. From a technical perspective, the Internet was designed 40 years ago with simple design principles. The hourglass model of the IP network is difficult to modify. New functions are added through continuous patching and overlay network methods, and incremental changes are difficult to support growing content distribution. , mobility, and reliability requirements. Lack of intrinsic security and are subject to increasingly sophisticated cyber attacks. From ...

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Problems solved by technology

Although this solution reduces the path update overhead and switching delay, because the content name is always kept unchanged during the content source switching process, the route aggregation convergence problem after the switching is not considered, and the FIB table entries will be too large, which will cause server problems. to bear

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