A PUE in communication with an ANDSF server through an access network includes a network interface unit of the PUE from which a registration request is sent to the ANDSF server through the access network and which receives a successful authentication result and a set of configuration instructions from the ANDSF server. The PUE includes a processing unit of the PUE which determines one or more observation triggers from the set of configuration instructions. Upon fulfillment of the observation trigger, the processing unit activates one or more interfaces supported by the PUE, which the set of configuration instructions requires to be monitored. The processing unit determines consolidated areas, wherein each consolidated area includes those geographical points with given network characteristics for one or more accessible networks. The consolidated areas data are stored in the memory and submitted by the network interface unit to the ANDSF server through the access network.