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Dynamic Update Cache Scheme Based on Feedback Times for Device-to-Device Caching Networks

Published: 28 January 2020 Publication History

Abstract

On the premise of determining the order of cached files according to Zipf law, this paper proposes a dynamic update caching strategy (SBRC-2DS) based on file segment caching scheme. In this scheme, the user cache space is divided into three parts, and each cache space is equal probability random to cache the corresponding files in the file library segments, and the probability of caching different segments of the files is different. According to the dynamic change of the number of file requests, the segmentation criteria of the file library are updated accordingly, and the updating method adopts the percentage updating method. Only 20% of the files are filtered at a time and placed in the segment of the file library with the smallest hit probability. The simulation results show that SBRC-2DS has sufficient advantages in improving cache hit ratio compared with several existing classical cache strategies.

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ICNCC '19: Proceedings of the 2019 8th International Conference on Networks, Communication and Computing
December 2019
263 pages
ISBN:9781450377027
DOI:10.1145/3375998
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 28 January 2020

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Author Tags

  1. Caching strategy
  2. Device-to-Device (D2D) communication
  3. Dynamic updating
  4. Hitting probability

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