Delay-tolerant resource scheduling in large-scale virtualized radio access networks

Xianfu Chen, Huaqing Zhang, Zhu Han

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

    2 Citations (Scopus)


    Network virtualization facilitates radio access network (RAN) sharing by decoupling the physical network infrastructure from the wireless services. This paper considers a scenario in which a virtual network operator (VNO) leases wireless resources from a software-defined networking based virtualized RAN set up by a third-party infrastructure provider (InP). In order to optimize the revenue, the VNO explores jointly the delay tolerance in mobile traffic and the weak load coupling across the base stations (BSs) when making the resource scheduling decisions to serve its mobile users (MUs). The problem faced by the VNO can be straightforwardly transformed to the problem of minimizing the payments to the InP, which is formulated as a finite time horizon constrained Markov decision process (MDP). However, for a large-scale network with a huge number of MUs, the problem solving becomes extremely challenging. Through the dual decomposition approach, we decompose the problem into a series of per-MU MDPs, which can be solved distributedly. Moreover, the independence of channel conditions between a MU and the BSs is expected to further simplify solving each per-MU MDP. The simulations carried out in this paper show that our proposed scheme achieves minimal average payments compared with other existing approaches in literature.
    Original languageEnglish
    Title of host publication2017 IEEE International Conference on Communications, ICC 2017
    EditorsMerouane Debbah, David Gesbert, Abdelhamid Mellouk
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Electronic)978-1-4673-8999-0
    ISBN (Print)978-1-4673-9000-2
    Publication statusPublished - 28 Jul 2017
    MoE publication typeA4 Article in a conference publication
    EventIEEE International Conference on Communications, ICC 2017 - Paris, France
    Duration: 21 May 201725 May 2017


    ConferenceIEEE International Conference on Communications, ICC 2017
    Abbreviated titleICC 2017


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