Performance Optimization in Mobile-Edge Computing via Deep Reinforcement Learning

Xianfu Chen, Honggang Zhang, Celimuge Wu, Shiwen Mao, Yusheng Ji, Mehdi Bennis

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

    96 Citations (Scopus)


    To improve the quality of computation experience for mobile devices, mobile-edge computing (MEC) is emerging as a promising paradigm by providing computing capabilities within radio access networks in close proximity. Nevertheless, the design of computation offloading policies for a MEC system remains challenging. Specifically, whether to execute an arriving computation task at local mobile device or to offload a task for cloud execution should adapt to the environmental dynamics in a smarter manner. In this paper, we consider MEC for a representative mobile user in an ultra dense network, where one of multiple base stations (BSs) can be selected for computation offloading. The problem of solving an optimal computation offloading policy is modelled as a Markov decision process, where our objective is to minimize the long-term cost and an offloading decision is made based on the channel qualities between the mobile user and the BSs, the energy queue state as well as the task queue state. To break the curse of high dimensionality in state space, we propose a deep Q-network-based strategic computation offloading algorithm to learn the optimal policy without having a priori knowledge of the dynamic statistics. Numerical experiments provided in this paper show that our proposed algorithm achieves a significant improvement in average cost compared with baseline policies.
    Original languageEnglish
    Title of host publication2018 IEEE 88th Vehicular Technology Conference (VTC-Fall)
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Number of pages6
    ISBN (Electronic)978-1-5386-6358-5, 978-1-5386-6357-8
    ISBN (Print)978-1-5386-6359-2
    Publication statusPublished - 2018
    MoE publication typeA4 Article in a conference publication
    Event88th IEEE Vehicular Technology Conference, VTC-Fall 2018 - Chicago, United States
    Duration: 27 Aug 201830 Aug 2018
    Conference number: 88

    Publication series

    SeriesIEEE Vehicular Technology Conference Papers


    Conference88th IEEE Vehicular Technology Conference, VTC-Fall 2018
    Abbreviated titleVTC-Fall 2018
    Country/TerritoryUnited States


    • cellular radio
    • cloud computing
    • optimisation
    • radio access networks
    • Markov process
    • mobile computing


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