Optimized positioning method for mobile devices

A mobile device comprising:

• a transceiver for sending a receiving data wirelessly;
• a memory;
• and
• a processor communicatively coupled to the transceiver and the memory, the processor configured to:
• obtain assistance data comprising information for a plurality of cells associated with wireless transmitters of a wireless communications network proximate to the mobile device;
• select a subset of the plurality of the cells from the assistance data, wherein the processor is further configured to:
• identify, as being colocated, one or more colocated sets of cells from the plurality of cells based on operating mode information from the subset of the plurality of the cells from the assistance data;
• and
• select only one cell from each of the one or more colocated sets of cells to be included in the subset of the plurality of the cells;
• measure signals from the subset of the plurality of the cells to generate positioning signal measurements;
• and
• obtain a position of the mobile device based on the positioning signal measurements.