Patent ID: 8478266
Filing Date: 2013-07-02
Classification: H04L,H04W

Abstract:
1. A method for mobile node authentication, said method comprising: storing a plurality of time-based codes for each of a plurality of time periods; a home system receiving from a serving system a request to authenticate a mobile node, wherein said serving system is configured to provide a packet-data service to said mobile node, and wherein said authentication request includes authentication information provided by said mobile node, said authentication information including a coded mobile node identifier and a timestamp associated with said coded mobile node identifier; said home system referring to those of said stored time-based codes that are valid for a time period that encompasses a time indicated by said timestamp and comparing said coded mobile node identifier to those time-based codes to find a matching time-based code; and said home system identifying said mobile node based on said matching time-based code; said home system authenticating said mobile node; and said home system transmitting an authentication response to said serving system, said authentication response including a plurality of time-based codes that are valid for said mobile node for a plurality of future time periods.