FIELD: radio engineering, communication.
SUBSTANCE: gateway mobile location centre node (GMLC-1) with passive data collection (PDC) function for locating a communication system (S) receives a find-subscribers-in-area request from a location application node (LAP), and prioritisation is performed according to a predetermined prioritisation criterion, based on passive location data received in the gateway node, wherein one or more user terminals are selected as polling priority user terminals (UE, UE2). Based on said selection, a core network mobile switching centre/voice location register (MSC/VLR) node is requested to generate updated passive location data. Thus, the gateway node receives updated passive location data including information on detected polling priority user terminals. Based on the updated data, the gateway node is able to provide information on the detected user terminals to the application node.
EFFECT: ensuring that all subscribers in a given area will be found since passive location data may be inaccurate.
18 cl, 6 dwg
