An adaptive edge content caching method based on mobility and popularity awareness

Abstract

The invention claims to protect an adaptive edge content caching method based on mobility and popularity perception, belonging to the technical field of communication. Aiming at the problems of free movement of users and real-time changes of content popularity in mobile edge computing scenarios, an adaptive edge content caching method is proposed. According to the global and local popularity of the content and the cache capacity constraints of the edge server, the edge cache configuration of the content is initialized; according to the real-time change of the content popularity, the time-space transfer characteristics of the user, and the cache resource status of the edge server, the content cache is configured. Adaptive dynamic update is performed to effectively improve the edge cache hit rate and reduce the content download delay.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an adaptive edge content caching method based on mobility and popularity perception. Background technique [0002] With the advent of the 5G era, the number of Internet of Things (IoT) applications has increased substantially. The surge of network traffic leads to the increase of delay and the huge consumption of energy, which leads to the decrease of user quality of experience (QoE). As an emerging technology, Mobile Edge Computing (MEC) is different from cloud computing. MEC provides computing and caching resources at the edge of the network, and caches popular content to edge servers to reduce the delay of network tasks and the backhaul of large amounts of data ( For example: video, audio, web pages), the user's request can be processed on the edge server close to the user, instead of being transmitted to the cloud, which effectively shortens the delay time,...

AI Technical Summary

Problems solved by technology

[0003] At present, most caching solutions mainly consider the static scene of the user, ignoring the real-time changes of the user's mobility and popularity, which cannot reflect the real popularity, and it is difficult to guarantee the stability of the user experience, resulting in the continuous deterioration of the content download delay. , in order to solve the above problems, the present invention proposes an adaptive edge content caching method based on mobility and popularity perception according to the user's spatiotemporal transfer characteristics and real-time changes in content popularity, thereby minimizing content download delay and maximizing Content Cache Hit Ratio

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