| 摘要 |
A method performed by a mobile communications node at a setup or a reconfiguration of a radio link control unacknowledged mode (RLC-UM) radio bearer includes receiving a radio bearer setup message from a network communications node, the radio bearer setup message being applied in configuring an RLC-UM radio bearer within the mobile communications node to be able to communicate data with the network communications node, in response to receiving the radio bearer setup message, calculating new cipher data for determining values of a cipher input parameter used for ciphering and deciphering data communicated with the network communications node, and transmitting to the network communications node a radio bearer setup complete message confirming that the RLC-UM radio bearer has been setup and sending the new cipher data to the network communications node. |
