Summary:
Recently, the environmental consequences of the Communication Industry, has
been receiving an emerging attention from both industrial and fundamental
researchers. Thesis work has investigated a number of different means and
techniques that improve the energy efficiency of evolved mobile networks. The
techniques described in this thesis are mainly about the access network, which
is the most energy consuming sector of the mobile cellular network. The
description of the energy efficient techniques is followed by a simple radio
network power usage model. Based on the model, examples are given where
different deployment scenarios have been compared and we have come to useful
conclusions from energy consumption perspective. The deployment scenarios, that
enclose the energy efficient techniques mentioned in the present thesis, are
based in:1)turning off certain cells when the network traffic is low.2)reducing
the capacity, services and energy consumption of certain cells, without turning
off turning off the cells, when the network traffic is low.3)using micro base
stations and femtocells in homogeneous networks of macro base stations.4)the
energy-aware cooperative management of the cellular access networks of two
operators offering service over the same area. Finally, apart from the above
deployment scenarios of the access network, the DRX mechanism in LTE and UMTS
networks, is also described in the present thesis
Keywords:
Energy Efficient Techniques, Access Netwrok, Femtocells, DRX, Dimming Base Stations
