Patent ID: 8175056
Filing Date: 2012-05-08
Classification: H04L,H04W

Abstract:
1. A method for managing mobility of an Access Terminal (AT) in a mobile communication system using a Proxy Mobile Internet Protocol (PMIP), the method comprising: as the AT performs a handoff from a source network to a target network, delivering, by a target Signaling Radio Network Controller (SRNC) of the target network, session information of the AT, acquired from a source SRNC of the source network, to a target Access Network (AN) of the target network; performing an access authentication process between the AT and an Authentication, Authorization and Accounting server (AAA); after the access authentication process, performing, by the target AN to which the AT will perform a handoff, a proxy registration procedure for establishing a PMIP interface, with a target Access Gateway (AGW) of the target network; sending, by the AT, to the target AGW an interface establishment triggering message indicating a need to establish an interface between the target AGW and a Home Agent (HA); sending, by the target AGW, a message for requesting a proxy registration to the HA for mobility management for the AT; sending, by the HA, an access request message associated with PMIP establishment to the AAA; receiving, by the HA, an access accept message from the AAA in response to the access request message; and sending, by the HA, a response message for the proxy registration, to the target AGW, in response to the message for requesting proxy registration.