QoE-driven energy efficiency promotion for mobile video service

Mobile video service consumes more energy than other services from the perspective of data transmitting and user-side device energy consumption. Research on energy efficiency of mobile video service is of vital significance in achieving a green communication system. This paper aims to increase energy efficiency for mobile video systems based on the characteristics of QoE. Considering that user's QoE is constrained by factors like devices and ambient environment, a QoE-driven adaptive streaming scheme is proposed in order to help save radio resources and reduce power consumption. After that, a simple QoE model and several power models relevant to mobile video service are formulated. Based on these models, a QoE-driven energy efficient resource allocation algorithm is introduced. Simulation results demonstrate that the proposed algorithm can achieve superior performance in both QoE and energy efficiency, especially for cell-edge users.