Pre-Grant Publication Number: 20110222690
Filing Date: December 31, 2008Priority Date: June 12, 2008
Inventors: Lu Gan
Assignee(s): ZTE CORPORATION
Current U.S. Classification: 380, 380/272000
View Prior Art for Claim 00005
The method of Claim 1, wherein when Handover of the UE from the E-UTRAN to the UTRAN or the GERAN occurs, the MME derives keys using the predefined parameters after receiving a handover request, and/or, the UE derives keys using the predefined parameters after receiving a handover command for handover from the E-UTRAN. 
