Cooperative Online Caching in Small Cell Networks with Limited Cache Size and Unknown Content Popularity

Chen Tai Yen, Feng-Tsun Chien, Min Kuan Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

In this paper, we study delay-aware cooperative online content caching with limited caching space and unknown content popularity in dense small cell wireless networks. We propose a Cooperative Online Content cAching algorithm (COCA) that decides in which BS the requested content should be cached with considerations of three important factors: The residual cache space in each small cell basestation (SBS), the number of coordinated connections each SBS establishes with other SBSs, and the number of served users in the coverage area of each SBS. In addition, due to limited storage space in the cache, the proposed COCA algorithm eliminates the least recently used (LRU) contents to free up the space. We compare the delay performance of the proposed COCA algorithm with the existing offline cooperative caching schemes through simulations. Simulation results demonstrate that the proposed COCA algorithm has a better delay performance than the existing offline algorithms.

Original languageEnglish
Title of host publication2018 3rd International Conference on Computer and Communication Systems, ICCCS 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages487-491
Number of pages5
ISBN (Print)9781538663509
DOIs
StatePublished - 11 Sep 2018
Event3rd International Conference on Computer and Communication Systems, ICCCS 2018 - Nagoya, Japan
Duration: 27 Apr 201830 Apr 2018

Publication series

Name2018 3rd International Conference on Computer and Communication Systems, ICCCS 2018

Conference

Conference3rd International Conference on Computer and Communication Systems, ICCCS 2018
CountryJapan
CityNagoya
Period27/04/1830/04/18

Keywords

  • 5G
  • content caching
  • coordinated multipoint
  • small cell

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