Dynamic-Priority based Profit-Driven Scheduling in Mobile Cloud Computing

摘要

Mobile cloud computing is now emerging as a promising way to enlarge the capabilities of mobile devices by computation offloading. One of the critical challenges faced by the mobile cloud providers today is how to increase the profitability of their cloud services. In this paper, we deal with the problem of scheduling parallelizable computation jobs offloaded by mobile users in public cloud to maximize cloud providers' profit. We propose an efficient dynamic-priority based and profit-driven scheduling mechanism. We first compute the inherent profitability of a job based on the marginal effect theory and use it as the initial priority. Then, we update the priorities of waiting jobs based on the proposed time-dependent dynamic-priority calculation model as the elapse of time. The results of numerical experiments and simulations show that our approach are efficient in scheduling these kind of jobs in cloud data centers external to mobile devices and considerable profit improvements can be achieved by our proposed dynamic-priority based scheduling mechanism.