| 摘要 |
<p>A method of modifying Integrity Protection Configuration in a user end of a communications system starts with receiving a first Radio Resource Control (RRC) message through a first Signaling Radio Bearer (SRB) on downlink for modifying the Integrity Protection Configuration. Activation Time of a second SRB on uplink is set to at least VT(RRC SN) + 2. The Activation Time of the second SRB on uplink is attached to a second RRC message utilized for indicating completion of modifying the Integrity Protection Configuration. The second RRC message is outputted to a network end of the communications system through the first SRB on uplink. Finally, a third RRC message having a sequence number equal to the Activation Time is outputted through the second SRB on uplink after receiving an acknowledgement message indicating that the network end successfully received the second RRC message.</p> |
