| 摘要 |
A user device has a means for receiving a signal transmitted from a base station and acquiring a parameter to determine an implementation condition for cell reselection, a counting means for counting the number of times of reselection of cells, and a measuring means for measuring Doppler frequency. The implementation condition for the cell reselection is that the state in which the strength of the received signal from a destination base station is higher than the strength of the received signal from the source base station by not less than Qhyst continues for not less than T. Whether or not to correct a reselection waiting period is determined depending on whether or not both of a first condition and a second condition are satisfied. The first condition is that the number of times of reselection of cells performed in a predetermined first period (TCR) is not less than a first threshold (NCR). The second condition is that the Doppler frequency is not less than a predetermined second period (FD)over a second period (TFD).
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