Figure 3From: Evaluation of the potential for energy saving in macrocell and femtocell networks using a heuristic introducing sleep modes in base stationsExample distribution of users in a femtocell network ( D U = 500 users = km2, α = 3, Channel BW = 5 MHz). Squares represent users with a bit rate requirement ranging from 2.8 to 16.9 Mbps.Back to article page