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.