A Probability Preferred Priori Offloading Mechanism in Mobile Edge Computing

IEEE Access

R. Simon Sherratt¹  Gwang-Jun Kim²  Amr Tolba³  Ahmad Alzubi³  Osama Alfarraj³  Jin Wang⁴  Zhuofan Liao⁴  Wenbing Wu⁴ 

[1] Department of Biomedical Engineering, The University of Reading, Reading, U.K.;Department of Computer Engineering, Chonnam National University, Gwangju, South Korea;Department of Computer Science, Community College, King Saud University, Riyadh, Saudi Arabia;Hunan Provincial Key Laboratory of Intelligent Processing of Big Data on Transportation, School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha, China;

关键词: Probability preferred;    workload;    offloading;    genetic algorithm;    mobile edge computing;   

DOI  :  10.1109/ACCESS.2020.2975733

来源: DOAJ

【 摘 要 】

Mobile edge computing (MEC) can provide computation and storage capabilities via edge servers which are closer to user devices (UDs). The MEC offloading system can be viewed as a system where each UD is covered by single or multiple edge servers. Existing works prefer a posterior design when task offloads, which can lead to increased workloads. To investigate the task offloading of edge computing in multi-coverage scenario and to reduce the workload during task offloading, a probability preferred priori offloading mechanism with joint optimization of offloading proportion and transmission power is presented in this paper. We first set up an expectation value which is determined by the offloading probability of heterogeneous edge servers, and then we form a utility function to balance the delay performance and energy consumption. Next, a distributed PRiori Offloading Mechanism with joint Offloading proportion and Transmission (PROMOT) power algorithm based on Genetic Algorithm (GA) is proposed to maximize the utility of UD. Finally, simulation results verify the superiority of our proposed scheme as compared with other popular methods.

【 授权许可】

Unknown