• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Energy-Efficient Resource Allocation for Application Including Dependent Tasks in Mobile Edge Computing


Abstract

This paper studies a single-user Mobile Edge Computing (MEC) system where mobile device (MD) includes an application consisting of multiple computation components or tasks with dependencies. MD can offload part of each computation-intensive latency-sensitive task to the AP integrated with MEC server. In order to accomplish the application faultlessly, we calculate out the optimal task offloading strategy in a time-division manner for a predetermined execution order under the constraints of limited computation and communication resources. The problem is formulated as an optimization problem that can minimize the energy consumption of mobile device while satisfying the constraints of computation tasks and mobile device resources. The optimization problem is equivalently transformed into solving a nonlinear equation with a linear inequality constraint by leveraging the Lagrange Multiplier method. And the proposed dual Bi-Section Search algorithm Bi-JOTD can efficiently solve the nonlinear equation. In the outer Bi-Section Search, the proposed algorithm searches for the optimal Lagrangian multiplier variable between the lower and upper boundaries. The inner Bi-Section Search achieves the Lagrangian multiplier vector corresponding to a given variable receiving from the outer layer. Numerical results demonstrate that the proposed algorithm has significant performance improvement than other baselines. The novel scheme not only reduces the difficulty of problem solving, but also obtains less energy consumption and better performance.


Statistics

Show / Hide Statistics

Statistics (Cumulative Counts from December 1st, 2015)
Multiple requests among the same browser session are counted as one view.
If you mouse over a chart, the values of data points will be shown.


Cite this article

[IEEE Style]
Y. Li, G. Xu, J. Ge, P. Liu and X. Fu, "Energy-Efficient Resource Allocation for Application Including Dependent Tasks in Mobile Edge Computing," KSII Transactions on Internet and Information Systems, vol. 14, no. 6, pp. 2422-2443, 2020. DOI: 10.3837/tiis.2020.06.006.

[ACM Style]
Yang Li, Gaochao Xu, Jiaqi Ge, Peng Liu, and Xiaodong Fu. 2020. Energy-Efficient Resource Allocation for Application Including Dependent Tasks in Mobile Edge Computing. KSII Transactions on Internet and Information Systems, 14, 6, (2020), 2422-2443. DOI: 10.3837/tiis.2020.06.006.