Pre-Grant Publication Number: 20110135095
Filing Date: December 29, 2008Priority Date: June 16, 2008
Inventors: Xuwu Zhang, Lu Gan, Qing Huang
Assignee(s): ZTE CORPORATION
Current U.S. Classification: 380, 380/272000
View Prior Art for Claim 00015
The generating system according to Claim 12, whereinthe message interaction unit in the UE is also used for sending a route area update request message or a route area attachment request message to the SGSN when the UE decides to transfer in an idle state;the message interaction unit in the SGSN is also used for sending a corresponding context request message or identification request message to the MME after receiving the route area update request message or the route area attachment request message;the request message receiving unit in the MME sends a first processing instruction to the security parameter processing unit if the transfer request message is a context request message or an identification request message, and the request message receiving unit sends a second processing instruction to the security parameter processing unit if the transfer request message is a switching request message; andthe security parameter processing unit in the MME sends the KSIASME together with the IK and the CK which are generated from the KASME to the SGSN through a context response message or an identification response message after receiving the first processing instruction, and the security parameter processing unit sends the KSIASME together with the IK and the CK which are generated from the KASME to the SGSN through a forward and redirect request message after receiving the second processing instruction. 
