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Wireless Communications and Mobile Computing
Volume 2018, Article ID 2179316, 10 pages
https://doi.org/10.1155/2018/2179316
Research Article

A Computing Offloading Game for Mobile Devices and Edge Cloud Servers

College of Information Engineering, Henan University of Science and Technology, Luoyang 471000, China

Correspondence should be addressed to Qingtao Wu; nc.ude.tsuah@1298tqw

Received 25 September 2018; Accepted 12 November 2018; Published 2 December 2018

Academic Editor: Patrick Seeling

Copyright © 2018 Meiwen Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Computing offloading of mobile devices (MDs) through cloud is a greatly effective way to solve the problem of local resource constraints. However, cloud servers are usually located far away from MDs leading to a long response time. To this end, edge cloud servers (ECSs) provide a shorter response time due to being closer to MDs. In this paper, we propose a computing offloading game for MDs and ECSs. We prove the existence of a Stackelberg equilibrium in the game. In addition, we propose two algorithms, F-SGA and C-SGA, for delay-sensitive and compute-intensive applications, respectively. Moreover, the response time is reduced by F-SGA, which makes decisions quickly. An optimal decision is obtained by C-SGA, which achieves the equilibrium. Both algorithms above proposed can adjust the computing resource and utility of system users according to parameters control in computing offloading. The simulation results show that the game significantly saves the computing resources and response time of both the MD and the ECSs during the computing offloading process.