A user apparatus for use in a mobile communication system, including: determination means configured to determine whether the user apparatus can take both states of a discontinuous reception state and a non-discontinuous reception state at the same time; and measurement control means configured, if it is determined that the user apparatus can take both states of a discontinuous reception state and a non-discontinuous reception state at the same time by the determination means, to determine 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, and to perform measurement using a determined measurement condition.