Patent ID: 8331287

Claim:
A method for managing mobility of an Access Terminal (AT) in a mobile communication system using a Mobile Internet Protocol, the method comprising: performing, by the AT, an authentication process of the AT with an Access Gateway (AGW); sending, by the AT, an Agent Solicitation message to the AGW; sending, by the AGW, an Agent Advertise message including a Care of Address (CoA) to the AT in response to the Agent Solicitation message sent by the AT; sending, by the AT, a Registration Request (RRQ) message to the AGW; sending, by the AGW, the RRQ message to a Home Agent (HA); sending, by the HA, a Registration Response (RRP) message to the AGW; sending, by the AGW, the RRP message to the AT; and upon receipt of the RRP message, generating, by the AT, a Mobile Node (MN)-HA key and an MN-HA-Security Parameter Index (SPI).