Support mobile device in asymmetric link environment

Details Support mobile device in asymmetric link environment Support mobile device in asymmetric link environment

2007-11-13

2007-11-13

Mehrpour, Melody (Department: 2617)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S399000, C709S223000

Reexamination Certificate

active

09752884

ABSTRACT:
Methods and apparatus for registering a mobile device such as a mobile node or mobile router with a Home Agent in an asymmetric link environment. A Foreign Agent associates each of one or more interfaces of the Foreign Agent with a different care-of address. An agent advertisement including the care-of address for the one or more interfaces of the Foreign Agent is then sent via one or more uplinks. A registration request is received via a downlink router. The registration request identifies a care-of address associated with one of the one or more interfaces of the Foreign Agent. One of the interfaces identified by the care-of address is ascertained, thereby identifying the interface to which the mobile device has roamed. The registration request is forwarded to the Home Agent. A registration reply is received from the Home Agent. The registration reply is then forwarded to the mobile device via the ascertained interface.

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