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 00003
The method of Claim 1, wherein when Handover or Routing Area Update of the UE from the E-UTRAN to the UTRAN occurs, the derived keys include an Integrity Key (IK) and a Confidentiality Key (CK); or when Handover or Routing Area Update of the UE from the E-UTRAN to the GERAN occurs, the derived keys include an IK and a CK, further, a Confidentiality Key (Kc) is derived based on the derived IK and CK, and the root key of the E-UTRAN is Key Access Security Management Entity (KASME). 
