Optimal Multi-Interface Selection for Mobile Video Streaming in Efficient Battery Consumption and Data Usage

Abstract

With the proliferation of high-performance, large-screen mobile devices, users' expectations of having access to high-resolution video content in smooth network environments are steadily growing. To guarantee such stable streaming, a high cellular network bandwidth is required; yet network providers often charge high prices for even limited data plans. Moreover, the costs of smoothly streaming high-resolution videos are not merely monetary; the device's battery life must also be accounted for. To resolve these problems, we design an optimal multi-interface selection system for streaming video over HTTP/TCP. An optimization problem including battery life and LTE data constraints is derived and then solved using binary integer programming. Additionally, the system is designed with an adoption of split-layer scalable video coding, which provides direct adaptations of video quality and prevents out-of-order packet delivery problems. The proposed system is evaluated using a prototype application in a real, iOSbased device as well as through experiments conducted in heterogeneous mobile scenarios. Results show that the system not only guarantees the highest-possible video quality, but also prevents reckless consumption of LTE data and battery life.

Joint Optimized CPU and Networking Control Scheme for Improved Energy Efficiency in Video Streaming on Mobile Devices

“…By dynamically controlling downloading activities, these schemes improved the energy efficiency of video streaming services on mobile devices. In addition, in order to deal with both cellular and Wi-Fi networks, energy efficient methods that control both LTE and Wi-Fi simultaneously in supporting video streaming services over heterogeneous wireless networks were proposed [6,7]. Meanwhile, for the CPU, dynamic voltage and frequency scaling (DVFS), which can save energy at the cost of a reduced processing speed, is widely used on mobile devices.…”