Modelling and Optimization of Power Consumption in Wireless Access Networks
In this paper, the power consumption for five different wireless technologies, namely mobile WiMAX, fixed WiMAX, UMTS, HSPA and LTE is investigated based on the parameter assumptions for the five technologies. This power consumption is then related to the coverage of the base station. The base stations (macro-cells) are placed outdoor and for the mobile stations a laptop with a Wireless Network Interface Card (WNIC) for mobile WiMAX, UMTS, HSPA and LTE and a residential gateway for fixed WiMAX is considered. The energy efficiency per covered area PCarea was defined and compared for different bit rates and for the considered technologies (bandwidth of approximately 5 MHz). Lower PCarea values mean that the technology is more energy-efficient.