METHOD AND APPARATUS FOR HANDOVER BETWEEN A NETWORK SUPPORTING PROXY MOBILE IP AND A NETWORK SUPPORTING MOBILE IP

摘要

A method and an apparatus for supporting handover between a first network supporting proxy mobile Internet Protocol (IP) (PMIP) and a second network supporting mobile IP (MIP) are disclosed. A PMIP entity in the first network may perform home agent (HA) discovery such that the PMIP entity may select an HA that responds with a pre-determined code indicating that a binding entry for the WTRU exists in the HA. The PMIP entity may store the HA IP address in an authentication, authorization, and accounting (AAA) server. The PMIP entity may retrieve the HA IP address for the WTRU from the AAA server when the WTRU is readmitted, and perform a binding update using the HA IP address. A media independent handover (MIH) client may trigger an HA discovery to obtain an HA IP address without performing MIP registration. The MIP client may retain the HA IP address when disabled.