Importance

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Abstract

A call admission control method and a mobile station device for a CDMA mobile communication system which is capable of not damaging a communication quality of a mobile station in communication even under a situation of large traffic, suppressing a possibility for degrading a communication qualities of mobile stations in communication with surrounding base stations sufficiently low, and improving efficiency without increasing the control signal traffic. A radio base station device measures an uplink interference amount and broadcasts it to a mobile station, and the mobile station acquires the uplink interference amount that is broadcast from the base station, calculates a required receiving level at the base station that is expected in a case where it is admitted to a connection target base station according to said acquired uplink interference amount, and judges that admission of the mobile station is refused in a case where it is judged that a prescribed communication quality cannot be satisfied according this calculated required receiving level and the uplink interference amount.

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First Claim