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Content caching based on mobility prediction and joint user Prefetch in Mobile edge networks

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Abstract

With the development of 5G mobile networks, people’s demand for network response speed and services has increased to meet the needs of a large amount of data traffic, reduce the backhaul load caused by frequently requesting the same data (or content). The file is pre-stored in the base station by the edge device, and the user can directly obtain the requested data in the local cache without remotely. However, changes in popularity are difficult to capture, and data is updated more frequently through the backhaul. In order to reduce the number of backhauls and provide caching services for users with specific needs, we can provide proactive caching with users without affecting user activity. We propose a content caching strategy based on mobility prediction and joint user prefetching (MPJUP). The policy predicts the prefetching device data by predicting the user’s movement position with respect to time by the mobility of the user and then splits the partial cache space for prefetching data based on the user experience gain. Besides, we propose to reduce the backhaul load by reducing the number of content backhauls by cooperating prefetch data between the user and the edge cache device. Experimental analysis shows that our method further reduces the average delay and backhaul load, and the prefetch method is also suitable for more extensive networks.

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Acknowledgments

This work was supported in The National Natural Science Foundation of China(61672540); Hunan Provincial Natural Science Foundation of China (2018JJ3299, 2018JJ3682). Fundamental Research Funds for the Central Universities of Central South University (2019zzts152).

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  1. School of computer science and engineering, Central South University Chang Sha, Hu Nan, 410075, China

    Genghua Yu & Jia Wu

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  1. Genghua Yu
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  2. Jia Wu
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Correspondence to Jia Wu.

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This article is part of the Topical Collection: Special Issue on Emerging Trends on Data Analytics at the Network Edge

Guest Editors: Deyu Zhang, Geyong Min, and Mianxiong Dong

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Yu, G., Wu, J. Content caching based on mobility prediction and joint user Prefetch in Mobile edge networks. Peer-to-Peer Netw. Appl. 13, 1839–1852 (2020). https://doi.org/10.1007/s12083-020-00954-x

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