Patent ID: 8230212
Filing Date: 2012-07-24
Classification: H04L,H04W

Abstract:
1. A method involving a mobile node, a home agent, and an authentication server in a wireless communication system, comprising: generating, at the authentication server, a first security key that indicates a secure association between the home agent and the mobile node based on a second security key that indicates a secure association between the mobile node and the authentication server; generating, at the authentication server, at least one first index associated with the first security key, wherein said at least one first index is also generated by the mobile node; determining whether said at least one first index collides with any, second index currently associated with the mobile node; and storing, at the authentication server, said at least one first index and the first security key when said at least one first index does not collide with said any second index and modifying said at least one first index before storing said at least one first index and the first security key when said at least one first index collides with said any second index.