Exploring the interactions of communication, computing and caching in cloud RAN under two timescale

Jianhua Tang, Long Teng, Tony Q.S. Quek, Tsung Hui Chang, Byonghyo Shim

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

9 Citations (Scopus)

Abstract

There is a trend that the functionalities of communication, computing, and caching (CC&C) are merging together in the future networks. Recently, this mergence is formed by the concept of cloud radio access network (C-RAN) with caching as a service (CaaS). In this paper, we dissect the interactions of CC&C in C-RAN with CaaS from two dimensions: physical resource dimension and time dimension. In the physical resource dimension, we identify how to segment the baseband unit (BBU) pool resources (i.e. computational and storage) into different types of virtual machines (VMs). In the time dimension, we address how the long-term resource segmentation in the BBU pool affects the short-term beamforming in the remote radio heads. We formulate the problem as a stochastic mixed-integer nonlinear programming (SMINLP), and then approximate the problem as a global consensus problem. The alternating direction method of multipliers (ADMM) is utilized to obtain the solution in a distributed fashion. Simulation results demonstrate the that the proposed scheme is more cost saving than that without considering the integration of CC&C.

Original languageEnglish
Title of host publication18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
Volume2017-July
ISBN (Electronic)9781509030088
DOIs
Publication statusPublished - 2017 Dec 19
Externally publishedYes
Event18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017 - Sapporo, Japan
Duration: 2017 Jul 32017 Jul 6

Other

Other18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
CountryJapan
CitySapporo
Period17/7/317/7/6

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Keywords

  • ADMM
  • C-RAN
  • Caching as a Service
  • Resource segmentation
  • Two timescale

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

Cite this

Tang, J., Teng, L., Quek, T. Q. S., Chang, T. H., & Shim, B. (2017). Exploring the interactions of communication, computing and caching in cloud RAN under two timescale. In 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017 (Vol. 2017-July, pp. 1-6). [8227790] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SPAWC.2017.8227790