In-network caching and content placement in cooperative small cell networks

Francesco Pantisano, Mehdi Bennis, Walid Saad, Merouane Debbah

Research output: Chapter in Book/Report/Conference proceedingConference contribution

39 Scopus citations

Abstract

Anticipating multimedia file requests via caching at the small cell base stations (SBSs) has emerged as a promising technique for enhancing the quality-of-service (QoS) of cellular user equipments (UEs). Nevertheless, in traditional caching approaches, files are retrieved from evolved packet core (EPC) of the network, and without coordination among SBSs, which introduces new challenges of content duplication and unbalanced traffic load on the backhaul. In this paper, we propose a collaborative framework in which the SBSs can access files from the caches of other SBSs within the same network domain (i.e., connected to the same service gateway). We design a cost model for the content retrieval of contents across SBSs and from the EPC, and we propose a cost-aware decentralized algorithm, based on which the SBSs devise individual caching strategies (i.e., which files to cache, and from where). Simulation results show that the proposed cooperative caching scheme yields significant gains in terms of in-network content availability, reaching up to 21% improvement compared to a traditional approaches based on geographical distribution of the UEs.

Original languageEnglish (US)
Title of host publicationProceedings of the 2014 1st International Conference on 5G for Ubiquitous Connectivity, 5GU 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages128-133
Number of pages6
ISBN (Print)9781631900556
DOIs
StatePublished - Feb 11 2015
Event2014 1st International Conference on 5G for Ubiquitous Connectivity, 5GU 2014 - Levi, Finland
Duration: Nov 26 2014Nov 27 2014

Other

Other2014 1st International Conference on 5G for Ubiquitous Connectivity, 5GU 2014
CountryFinland
CityLevi
Period11/26/1411/27/14

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications

Cite this

Pantisano, F., Bennis, M., Saad, W., & Debbah, M. (2015). In-network caching and content placement in cooperative small cell networks. In Proceedings of the 2014 1st International Conference on 5G for Ubiquitous Connectivity, 5GU 2014 (pp. 128-133). [7041042] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.4108/icst.5gu.2014.258230