Mobile communication system

A device, comprising:

• one or more processors to:
• identify a data structure storing reference signatures for use in geolocation of mobile communication units in a cellular wireless communications system,
• the reference signatures associating location information and radio frequency measurements;
• identify a sub-area, within a coverage area of the cellular wireless communications system, based on the sub-area having a density of reference signatures, stored in the data structure, that is below a threshold value;
• influence movement of a mobile communication unit, of the mobile communication units, to enter the sub-area based on the density of reference signatures for the sub-area being below the threshold value,
• the mobile communication unit being subscribed to the cellular wireless communications system;
• obtain radio frequency measurements from the mobile communication unit in the sub-area;
• and
• generate the reference signatures from the radio frequency measurements to be added to the data structure for the sub-area.

A non-transitory computer-readable medium storing instructions, the instructions comprising:

• a plurality of instructions, that, when executed by a processor of a device, cause the processor to:
• identify a data structure storing reference signatures for use in geolocation of mobile communication units in a cellular wireless communications system,
• the reference signatures associating location information and radio frequency measurements;
• identify a sub-area, within a coverage area of the cellular wireless communications system, based on the sub-area having a density of reference signatures, stored in the data structure, that is below a threshold value;
• influence movement of a mobile communication unit, of the mobile communication units, to enter the sub-area based on the density of reference signatures for the sub-area being below the threshold value;
• obtain radio frequency measurements from the mobile communication unit in the sub-area;
• and
• generate the reference signatures from the radio frequency measurements to be added to the data structure for the sub-area.