A cross-layer cooperative caching for software-defined radio access networks

Qiang Li, Wennian Shi, Tao Zhang, Tao Chen, Tao Han, Jing Zhang

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

1 Citation (Scopus)

Abstract

To ease the contradiction between the explosive growth of mobile data traffic and the capacity-limited backhaul networks, content caching is considered in a software-defined radio access network (SD-RAN) in this paper. Equipped with low-cost storage units, popular contents that are frequently requested by users can be cached at both the centralized macro-cell base station (MBS) at which the main control logics are installed, and the distributed small-cell base stations (SBSs) that are mainly responsible for data transmissions. With an objective of minimizing the average content provisioning cost of SD-RAN, a storage allocation is formulated between the MBS and SBSs subjected to a sum storage constraint. Firstly, a non-cooperative caching strategy is proposed, where the MBS and SBSs cache popular contents independently. In order to better utilize the available storage for achieving more efficient caching, a cross-layer cooperative caching strategy is then proposed by leveraging the cooperation and coordination between the MBS and SBSs. Results demonstrate that the average content provisioning cost of SD-RAN can be significantly reduced by using the analytically obtained optimal storage allocation factor, and the proposed cross-layer cooperative caching always outperforms the non-cooperative caching.

Original languageEnglish
Title of host publication2017 IEEE/CIC International Conference on Communications in China, ICCC 2017
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages1-6
Number of pages6
ISBN (Electronic)978-1-5386-4502-4
ISBN (Print)978-1-5386-4503-1
DOIs
Publication statusPublished - 2 Apr 2018
MoE publication typeA4 Article in a conference publication
Event2017 IEEE/CIC International Conference on Communications in China, ICCC 2017 - Qingdao, China
Duration: 22 Oct 201724 Oct 2017

Conference

Conference2017 IEEE/CIC International Conference on Communications in China, ICCC 2017
CountryChina
CityQingdao
Period22/10/1724/10/17

Keywords

  • content provisioning cost
  • control-data separation
  • cooperative caching
  • Software-defined radio access networks

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  • Cite this

    Li, Q., Shi, W., Zhang, T., Chen, T., Han, T., & Zhang, J. (2018). A cross-layer cooperative caching for software-defined radio access networks. In 2017 IEEE/CIC International Conference on Communications in China, ICCC 2017 (pp. 1-6). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/ICCChina.2017.8330351