Patent ID: 7840811

Claim:
A network system using diameter authentication, authorization and accounting (AAA) infrastructure to support bootstrapping of a Mobile Internet Protocol version 6 (IPv6) mobile node, the network system comprising: a mobile node equipped with Mobile IPv6; an attendant which is accessed by the mobile node when the mobile node moves into a new network; an AAA local server which supports AAA processes for the mobile node in a local network; an AAA home server which supports AAA processes for the mobile node in a home network, and supports initial settings during the bootstrapping of the mobile node; and a home agent which handles binding update (BU) and binding acknowledgement (BA) regarding the mobile node, wherein after being allowed to access a network through the AAA infrastructure, the home agent is allocated to the mobile node and a home address is set to the mobile node based on information received from the AAA infrastructure, wherein the mobile node receives a random number, and security key material and generates a PSK based on the random number, and the security key material; wherein the mobile node generates an IKE Phase 1 security key based on the PSK, and distributes an Internet Protocol Security (IPsec) Security Association (SA) by conducting IKE negotiation with the home agent; and wherein the mobile node performs BU and BA using the IPsec SA in order to register a new location of the mobile node.