Reliability and Latency Aware Code-Partitioning Offloading in Mobile Edge Computing

Jianhui Liu, Qi Zhang

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    Abstract

    A variety of emerging use cases, e.g. virtual reality, autonomous vehicle, etc., require to reliably complete computation-intensive tasks within stringent latency. Mobile edge computing (MEC) is one of the promising solutions to provide computation capacity with low latency. However, it may cause extra communication cost to offload task to MEC via wireless channel. It is challenging to optimize the offloading decision considering the finite resource that is available at edge node for a user. In this paper, we study the code-partitioning offloading strategy where the computational task of the user is modeled by a directed acyclic graph. The reliability and latency of offloading are analyzed comprehensively. An optimization problem is formulated to minimize the offloading failure probability, subject to the latency constraint. Due to the non-convexity, we propose a heuristic algorithm to solve the problem with low complexity. The numerical results show that the proposed algorithm significantly improves the probability to reach the targeted reliability. The heuristic algorithm doubles the performance compared with the naive scheme, in particular, when the latency constraint is stringent. Furthermore, the proposed algorithm is applicable in various network conditions.

    OriginalsprogEngelsk
    Titel2019 IEEE Wireless Communications and Networking Conference, WCNC 2019
    Antal sider7
    ForlagIEEE
    Publikationsdato2019
    Artikelnummer8885778
    ISBN (Elektronisk)978-1-5386-7646-2
    StatusUdgivet - 2019
    BegivenhedIEEE Wireless Communications and Networking Conference: IEEE WCNC 2019 - Marrakech, Marokko
    Varighed: 15 apr. 201918 apr. 2019
    https://wcnc2019.ieee-wcnc.org/

    Konference

    KonferenceIEEE Wireless Communications and Networking Conference
    Land/OmrådeMarokko
    ByMarrakech
    Periode15/04/201918/04/2019
    Internetadresse

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