The introduction of Self-Organizing Network (SON) features
aims at reducing the workload on operation and maintenance
staff in order to free them from time-consuming
and recurring tasks, so that they are able to focus on more
sophisticated problems. The objective is to gradually move
from human supervision and execution of low-level network
operation tasks towards a purely monitoring and guiding of
a SON-enabled system. Vendors are able to implement SON
functions and integrate them one after another according to
Next Generation Mobile Networks (NGMN) requirements [1].
These SON functions realize NGMN SON use cases and
automatically perform the necessary actions. A SON system
will contain a large number of independently acting SON
function instances