Information center network mobility management method based on content popularity

Abstract

The invention discloses an information center network mobility management method based on content popularity and belongs to the technical field of next-generation internet technology research. The method includes the steps that, a requester side moves, specifically, the content requester sends an Interest package request, a router in a network receives the Interest message, the local cache is searched first, the Interest message is directly returned to the requester if the content exists in the local cache, and otherwise a PIT table is searched; a proxy node compares the popularity of the content with a popularity threshold value K; a content source moves to a new position and sends a 'handoff completion' message to the proxy node, wherein it is indicated that handoff is completed if an M marking position is '2', and a K marking position is 'NULL'. According to the method, the mobility of mobile nodes in the content center network is achieved, and the mobility management method based on the proxy node and the web cache avoids communication outage caused by single-fault nodes and link failure; once the proxy node fails and can not serve any more, the network can automatically carry out handoff in a web cache mode, and therefore it is guaranteed that communications are conducted normally.

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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