Mobile Terminals Cooperative Communication Framework for Energy Saving: Evaluation of Energy Efficiency Using Smartphone Test-Bed

Our main objective is to develop and demonstrate energy-efficient technologies for mobile terminals (MTs) that have multiple wireless interfaces (e.g., Long Term Evolution (LTE) interface for wide area network (WAN) and IEEE802.11 wireless interface for local area network (LAN)). In this paper, we propose a terminal cooperation framework that takes advantage of the energy-efficient wireless LAN to improve the energy efficiency (EE) of MTs. To verify the effectiveness of the terminal cooperation framework, we have constructed a smartphone test-bed. The experiment results show about 61% improvement of communication EE compared with the same experiment run without terminal cooperation.