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 00024
The generating system according to Claim 11, whereinthe UE consists of a message interaction unit, a key identifier mapping unit and a key and key identifier storage unit;the message interaction unit is used for receiving a message from a network side;the key identifier mapping unit is used for mapping the KSIASME into a key identity identifier of a target system when the message interaction unit receives a switching command, a route area update acceptance message or a route area attachment acceptance message; andthe key and key identifier storage unit is used for storing a key of a target system and a key identity identifier of the target system together;the MME consists of a request message receiving unit and a security parameter processing unit;the request message receiving unit is used for receiving transfer request messages from other network entities and instructing the security parameter processing unit to process these messages; andthe security parameter processing unit is used for generating a CK and an IK from the KASME and sending the KSIASME together with the IK and the CK which are generated from the KASME to the SGSN after receiving the instruction from the request message receiving unit;the SGSN consists of a security parameter receiving unit, a message interaction unit, a key identifier mapping unit, and a key and key identifier storage unit;the security parameter receiving unit is used for receiving the keys and the KSIASME from the MME, sending the KSIASME to the key identifier mapping unit, acquiring the key of the target system based on the keys sent by the MME, and sending it to the key and key identifier storage unit;the key identifier mapping unit is used for mapping the KSIASME into a key identity identifier of the target system after receiving the KSIASME;the key and key identifier storage unit is used for storing both the key of the target system sent by the security parameter receiving unit and the key identity identifier of the target system sent by the key identifier mapping unit, and notifying the message interaction unit of mapping completion after storing; andthe message interaction unit is used for sending a notification of mapping success of the network-side key identifier after receiving the message of mapping completion. 
