User apparatus and measurement control method

A measurement control method performed by a user apparatus for use in a mobile communication system, the method comprising:

• determining which measurement condition to use for performing measurement between a measurement condition for when in a discontinuous reception state and a measurement condition for when in a non-discontinuous reception state based on a state of a specific cell group among cell groups configured in the user apparatus, and performing measurement using a determined measurement condition,
• wherein the user apparatus communicates with a plurality of base stations each of which forms a cell group that includes one cell or a plurality of cells, and takes same discontinuous reception state or non-discontinuous reception state between cells in each cell group, and
• wherein the specific cell group is a predetermined cell group or a cell group that is notified from a base station of the plurality of base stations.