Method and apparatus for setting an integrity protection uplink application time for signalling bearer RB0 in a universal mobile telecommunications system

摘要

The details of an apparatus and method are disclosed for setting the Uplink RRC message sequence number for a new integrity protection configuration to be applied for signalling radio bearer RB 0 , on completion of a UTRAN MOBILITY INFORMATION procedure. The sequence number is set to a value such that the next RRC message to be sent on uplink RB 0 will use the new integrity protection configuration.