Patent ID: 7526257
Filing Date: 2009-04-28
Classification: H04W,Y02D

Abstract:
1. A mobile communication terminal used in a cellular mobile communication system, comprising: a module configured to measure, at a first interval between successive searches, a reception quality of a radio signal transmitted from an active base station serving the mobile communication terminal in a standby mode; a module configured to evaluate the measured reception quality; a module configured to change the first interval between successive searches to a second interval, different from the first interval, on the basis of an evaluation result of the reception quality; a module configured to store the measured reception quality; and a filtering module configured to execute filtering processing for the measured latest reception quality and a stored past reception quality on the basis of an evaluation result of the reception quality by the evaluation module and input the reception qualities that have undergone the filtering processinq to the evaluation module, wherein the reception quality evaluation module determines whether the measured reception quality is in a satisfactory state wherein the reception quality is more than a threshold value, when the measured reception quality has changed from a degraded state wherein the reception quality is less than the threshold value to the satisfactory state, the interval change module changes the first interval to the second interval longer than the first interval, and wherein the evaluation module determines whether the measured reception guality is in a satisfactory state wherein the reception quality is more than a threshold value, and when the evaluation module evaluates that the reception quality is in the satisfactory state wherein the reception quality is more than the threshold value, the filtering module selects the measured latest reception quality and inputs the latest reception quality to the evaluation module, and when the evaluation module evaluates that the reception quality is in a degraded state wherein the reception guality is less than the threshold value, the filtering module selects both the measured latest reception quality and the stored past reception quality, calculates a reception quality, and inputs the calculated reception guality to the evaluation module.