Named data network sequential caching method based on grading thought

Abstract

The invention discloses a named data network sequential caching method based on a grading thought, and the method comprises the steps: calculating the grade of a current router in a current path when a router receives a data packet, calculating the total number of routers in the current path, calculating the relative distance between the current router and a content requester in the current path, and caching the content of the current router in the current path; and calculating the relative distance between the current router and the content producer in the current path, calculating the residual cache capacity of the content memory in the current router, the size of the data packet and the value of the cache flag field, and comprehensively performing cache judgment after calculation is finished. Through the thought of grading, the data frequently requested by the user is rapidly distributed to the routers around the user through step-by-step caching, the waiting time of the user for requesting the data is shortened, meanwhile, through a sequential caching mode, the data is reasonably allocated and cached, the caching hit rate of the data packet is effectively improved, and the data caching efficiency is improved. And the average request time delay and the average routing hop count are reduced.

Description

technical field [0001] The invention belongs to the technical field of information center network caching, and more specifically relates to a named data network sequential caching method based on hierarchical thought. Background technique [0002] Today, the Internet is still developing rapidly, and the content diversity of the network is increasing day by day, but the traditional IP network architecture still follows the design concept of the last century, and the traditional network architecture is facing more and more technical challenges. In order to solve the inadaptability of the traditional network architecture in terms of network expansion, security, flexibility, and mobility, in recent years, countries around the world are paying attention to designing a new future Internet architecture, and one of the mainstream research directions is the information center network. Information-Centric Networking (ICN) is a network switching architecture with data content as the co...

AI Technical Summary

Problems solved by technology

Someone proposed a caching scheme based on probabilistic storage. Every time a router receives a data packet, it performs a calculation according to the probability of 0.5 to determine whether to cache the data packet. This scheme can make the router cache more data, but there is a large uncertainty sex

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