The principle of the network optimization is the
automated balancing and simultaneous minimization of a special target
function over the entire considered area. Depending on the
optimization goal there can be different target functions that
inherently represent the load distribution and the interference
situation (incl. pilot pollution) in the network.
The solution supports both coverage and capacity/quality
optimization for UMTS (incl. HSDPA), CDMA2000 (incl. EV-DO), and GSM systems.
The following input data are involved in the optimization
process. Basically these parameters are network planning data that can
gradually be tuned by live measurements from the real network.
network configuration (e.g. site locations,
transmit powers, antenna patterns and orientations, ...)
site-specific pathloss maps
service-specific traffic maps
further constraints on the re-configurable
parameters
Network Re-configuration
In order to lead the applied target function to its
optimum, certain parameters of the network configuration can be
modified by the optimization algorithm. In general, the following
parameters are re-configurable for each cell:
antenna tilt
antenna azimuth
antenna type
antenna height
cell pilot power
group site selection (out of candidates)
2G/3G site selection
In addition, certain cell-specific constraints can
be specified for these parameters in order to consider technical and
financial restrictions.
