Patent ID: 7899456
Filing Date: 2011-03-01
Classification: H04L,H04W

Abstract:
1. A method of home registration by a mobile node when the mobile node moves to a foreign network, comprising: the mobile node performing a first registration by sending a first plurality of registration messages to a first home agent, wherein a next one of the first plurality of registration messages is sent to the first home agent if the first home agent fails to respond to a current registration message sent to it and wherein the first registration fails if the first home agent fails to respond to the first plurality of registration messages within a first predetermined time; and performing a second registration by sending a registration message to a second home agent while sending registration requests to said first home agent until said first predetermined time has elapsed, wherein a first registration message is sent to the second home agent if the first home agent fails to respond to a current one of the first plurality of registration messages and a second predetermined time has elapsed since a first one of the first plurality of registration messages is sent, wherein at least two home agents are available for registration for the mobile node at any given time; wherein the second predetermined period of time is shorter than the first predetermined period of time, and the second time period is directed to communication with the second home agent and the first period of time is directed to the first home agent.