Patent ID: 8401556

Claim:
A mobile terminal used in a cellular mobile communication system, comprising: a measuring unit configured to measure reception levels of received signals; an averaging unit configured to average the measured reception levels based on a forgetting factor; a cell reselection unit configured to reselect a cell based on the averaged reception level; and a factor determining unit configured to determine the forgetting factor according to parameters sent from a network, wherein the parameters include an intermittent reception interval, a cell reselection wait period, and a cell reselection threshold, cell reselection is performed if a reception level of a signal from a neighboring cell becomes higher than a reception level of a signal from a serving cell and a difference between the reception levels continues to be greater than or equal to the cell reselection threshold for the cell reselection wait period or longer, and the factor determining unit is configured to determine the forgetting factor according to a formula α=2 −k/2 where α indicates the forgetting factor and k indicates an averaging factor that is greater than or equal to zero, the averaging factor being changed according to variation of one or more of the intermittent reception interval, the cell reselection wait period, the cell reselection period, and a mobility of the mobile terminal.