The present invention provides a method and an apparatus for controlling a
communications system that includes a mobile wireless device, a first and
a second base station and a radio network controller. The communications
system may allocate frequency bands to users on a multiplicity of
channels associated with a multi-layer access network across at least two
cells communicatively coupled to a first and a second base station,
respectively. The method comprises monitoring a radio emission parameter
associated with the first and second base stations that communicate with
the mobile wireless device. A radio emission parameter associated with
the first and second base stations, such as signal strength or quality,
is monitored, to select a target cell among a set of candidate cells for
the mobile wireless device and to transfer the mobile wireless device
from a first frequency band to a second frequency band. For example,
radio resource management algorithms may cause emission-controlled cell
selection and inter-frequency handover from a first frequency band to a
second frequency band with a transmit power level lower than that of the
first frequency band. In accordance with one aspect of the instant
application, electromagnetic exposure to a user of the mobile wireless
device is substantially decreased, resulting in lower energy costs and
reduced environmental impacts.