Caching method and device for internet of things

Abstract

Embodiments of the present invention provide a caching method and device for the Internet of Things. The method includes: receiving an Interest packet sent by a previous hop node, obtaining information of the requested content carried in the Interest packet, a list of cached nodes and a relative popularity correction parameter, and according to the relative popularity before the requested content is updated, the relative popularity Obtain the updated relative popularity of the requested content based on the degree correction parameters and the average request arrival rate of the requested content; if it is judged that the requested content does not exist in the local cache, it is judged whether to cache or not according to the updated relative popularity of the requested content Requested content; update the interest packet according to the judgment result and the updated relative popularity of the requested content, generate a new interest packet, and send the new interest packet to the next hop node. The caching method and device for the Internet of Things provided by the embodiments of the present invention adopt an edge feedback caching strategy based on relative popularity, which can increase the data hit rate in the network and reduce the request delay.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular, to a caching method and device for the Internet of Things. Background technique [0002] With the advancement of technology and the popularization of Internet applications, the scope and scale of Internet of Things applications have far exceeded the original design intention, especially in recent years with the improvement of the physical bandwidth of users accessing the network and the large-scale use of Internet of Things devices. , most of the content on the Internet of Things exists as an information-intensive form (such as video, audio, file stream), and the rapid development of the Internet of Things has triggered a sharp expansion of network data content. In this case, an information-centric network architecture emerges, which aims to change the current host-centric network architecture and develop it into a content-centric model. Differ...

AI Technical Summary

Problems solved by technology

Intra-region caching provides the best cache placement optimization, but is inefficient and not very scalable due to the large coordination overhead involved in the coordination process involving all nodes within the region

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