Energy-Efficient RRH Sleep Mode for Virtual Radio Access Networks

Johnson Opadere, Qiang Liu, Tao Han

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations


Network functions virtualization (NFV) has become a strategic tool that facilitates mobile network resource sharing and management by mobile network operators (MNOs). Cloud radio access network (C-RAN) virtualization allows agglomeration of multiple radio access networks (RANs) functions in a single resource pool. In this paper, Virtualized Radio Access Network (VRAN) is utilized as the enabler of inter-operator traffic offloading. To explore the energy saving potential of sleep mode scheme in base stations of cooperating MNOs, we leverage on inter-band non-contiguous carrier aggregation and put forward spectrum sharing into private and shared bands. We formulate an optimization problem to obtain the optimal intra-operator and inter-operator beamforming design for realizing energy-efficient virtual RAN. Inter-operator base station load transfer algorithm is proposed as well as inter-operator BS sleep-mode energy saving algorithm. Simulations results show a significant reduction of total inter-operator power consumption as compared to other algorithms.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalProceedings - IEEE Global Communications Conference, GLOBECOM
StatePublished - 2017
Externally publishedYes
Event2017 IEEE Global Communications Conference, GLOBECOM 2017 - Singapore, Singapore
Duration: Dec 4 2017Dec 8 2017

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Computer Networks and Communications
  • Hardware and Architecture
  • Signal Processing


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