Patent ID: 8688051

Claim:
A mobile station communicating with a radio base station, the mobile station comprising: a filtering unit configured to perform filtering on a measurement result of a radio quality of a serving cell and a peripheral cell in the mobile station, by using a filter coefficient; and a notification unit configured to notify, to the radio base station, the measurement result, when it is determined that the filtered measurement result should be notified, wherein: the filtering unit is configured to perform the filtering based on the following equations, after adjusting a filter coefficient â€œkâ€ or â€œaâ€, F n =(1âˆ’ a )Â· F nâˆ’1 +aÂ·M n a= Â½ (k/4) , where â€œnâ€ denotes an index relating to a measurement timing, â€œF n â€ denotes a measurement result after filtering, â€œkâ€ or â€œaâ€ denotes the filter coefficient for a measurement interval 200 ms, â€œF nâˆ’1 â€ denotes a measurement result after filtering at a measurement timing one before, and â€œM n â€ denotes a measurement result in the measurement unit; and the filtering unit is configured to adjust the filter coefficient so that the measurement result filtered in a non-discontinuous reception state and the measurement result filtered in a discontinuous reception state are equal in a temporal averaging interval.