FIELD: radio engineering, communication.
SUBSTANCE: mobile communication method according to the present invention includes steps of: generating, at a mobile station (UE), first verification information using a first key, a first parameter and an algorithm for integrity protection; generating, at the mobile station (UE), second verification information by taking out predetermined bits of the first verification information; and performing, at the mobile station (UE), cell selection processing, and transmitting, from the mobile station to a radio base station that manages the selected cell, an RRC-PDU for RRC connection re-establishment request through a common control channel, upon detection of a radio link failure in an RRC connection, the second verification information being set in the RRC-PDU for RRC connection re-establishment request.
EFFECT: highly secure communication.
5 cl, 6 dwg
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