Holistic approach to future green mobile communications

In this paper, the design concept for mobile radio communications is presented with crucial trade-offs between system performance and energy-consumption. The system performance, depends on various adaptive procedures and parameters adopted at multiple OSI layers of a communication system. However these procedures and parameters require spectrum and energy resources and contribute to the overall system and network energy-consumption and to the resulting CO2 emission. In this paper, a vision on green mobile communication technology is presented, and some trade-offs among different methodologies toward energy-efficient system-design are considered. Below, we discuss the degrees of freedom in the design of communications systems and networks using various technologies, and investigate their energy-saving options.