Patent ID: 11877150
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. The information obtaining method according to claim 6, wherein
the sending, by a target mobility management network element to a source mobility management network element, a first initial NAS message from a terminal comprises:
sending, by the target mobility management network element, a context request message to the source mobility management network element, wherein the context request message comprises the first initial NAS message; and
the receiving, by the target mobility management network element, a second root key and first indication information from the source mobility management network element comprises:
receiving, by the target mobility management network element, a context response message sent by the source mobility management network element, wherein the context response message comprises the second root key and the first indication information.