| 摘要 |
An apparatus and method for ciphering uplink data in a mobile communication system are provided. The apparatus includes a Radio Network Controller (RNC) for, when receiving a Radio Bearer Setup Complete after a ciphering activation time, determining a Hyper Frame Number (HFN) value of a User Equipment (UE) and changing an HFN value of the RNC to the same HFN value determined of the UE.
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