A Heuristic CCN Cooperative Caching Method

Abstract

The present invention provides a heuristic CCN network cooperative caching method, comprising the following steps: step S1, the network model is a two-level CCN topology, and the two-level CCN topology is composed of a control node and a common node; a control node and a plurality of common nodes Form an SBS; Step S2, the popularity of the cached content: Step S3, maximize the local SBS hit rate; Step S4, maximize the entire network hit rate; Step S5, maximize the average profit obtained by the user: Step S6, optimal decomposition The algorithm of factor; step S7, the cache replacement of the control node; the present invention introduces the cooperative cache mode between SBSs between the local hit rate of the SBS and the hit rate of the whole network, which increases the content diversity of the whole network to a certain extent, and improves the The hit rate of the entire network; at the same time, SBS also conducts cooperative caching internally to improve the local hit rate and maximize the average profit obtained by users.

Description

technical field [0001] The invention relates to the technical field of information center network, in particular to a heuristic CCN network cooperative caching method. Background technique [0002] With the rapid development of the Internet, many new types of network applications have emerged, among which content acquisition applications occupy an important position. According to the 2018 Cisco VNI report: In the past five years, mobile data traffic has increased 18 times, of which video streaming accounts for 60% of all mobile traffic. This predicted increase does not conform to the existing TCP / IP connection-oriented design mode, which will increase the transmission of data in the network, resulting in increased transmission delay and energy consumption. In order to solve this problem, researchers have proposed a new data-centric network model - Information Centric Networking (ICN), of which the representative one is Content Centric Networking (CCN). [0003] CCN is a ne...

AI Technical Summary

Problems solved by technology

However, in any network topology of CCN, each node has the same status, and cooperation occurs among all nodes. It cannot give full play to the advantages of cooperative caching, but will cause a waste of bandwidth resources.

Images