Mobile WiMAX has the lowest power consumption of approximately 2.9 kW per base station, and a range of 340 m. LTE has the highest power consumption, 3.7 kW per base station, and the largest range, of approximately 470 m. HSPA has the lowest range, 240 m, of all the considered technologies and a power consumption of 3.7 kW per base station, which is comparable to the power consumption of LTE.
In urban and suburban areas it is fair to consider subscriber densities between 100 and 300 users per km 2. When we assume a density of 300 users per km 2 and compare the power consumption per user, we see that LTE performs the best with a power consumption of 18 W/Subs, followed by Mobile WiMAX with a power consumption of 27 W/Subs. The power consumption per user is lower for LTE because of its larger range. HSPA has the highest power consumption per user, 68 W/Subs, caused by its lower range. Note that these numbers are related to the considered subscriber density. When we consider half of the subscriber density, the estimated power consumption per subscriber doubles.
Also for wireless access networks the parameters are summarized in Table I and Fig. 3.