Patent ID: 8301146

Claim:
A user apparatus for use in a mobile communication system including a macrocell and a closed cell wherein unspecified users are allowed to access the macrocell and specified users are allowed to access the closed cell, the user apparatus comprising: a measurement unit configured to measure quality of a signal provided from a camped cell in an idle state; a cell search unit configured to measure quality of a signal provided from a neighbour cell; and a cell reselection unit configured to perform cell reselection depending on the measurements, wherein in a case of a frequency of the macrocell being identical to a frequency of the closed cell, if a predefined reselection criterion is satisfied, the closed cell adjacent to the camped cell is reselected as a standby cell, the predefined reselection criterion corresponding to a state where the quality of the signal provided from the closed cell has been higher than or equal to the quality of the signal provided from the camped cell by a predefined threshold for longer than or equal to a predefined reselection duration, and in a case of the frequency of the macrocell being different from the frequency of the closed cell, if a predefined suitability criterion is satisfied, the closed cell adjacent to the camped cell is reselected as the standby cell, the predefined suitability criterion corresponding to a state where the quality of the signal provided from the closed cell is higher than or equal to a predefined threshold.