Energy Consumption Minimization of Smart Devices for Delay-Constrained Task Processing with Edge Computing

As high quality real-time service demands on smart device applications are rapidly increasing, offloading the application task to the edge server to reduce total response time is emerging as a key issue. Meanwhile, smart devices are very sensitive to the energy consumption (to maximize the battery lifetime), where various energy consumption schemes have been attempted to minimize the power profile, especially for computationally heavy tasks. In this paper, an energy consumption minimization scheme that adjusts both the offloading ratio and CPU operating frequency of the device based on a Dynamic Voltage and Frequency Scaling (DVFS) technique under delay constraint is proposed. Simulation results show that the proposed scheme minimizes the energy consumption of the device while satisfying the delay requirement.