Mobility management system by distributed mobile IP

Details Mobility management system by distributed mobile IP Mobility management system by distributed mobile IP

2008-01-22

2008-01-22

Phunkulh, Bob A. (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S401000, C709S217000, C709S238000

Reexamination Certificate

active

07321577

ABSTRACT:
In the Mobile IPv4 network in the present invention, FA control servers (7a,7b) that process only Mobile IP signaling, and IP tunnel routers (8a,8c), being an IP tunnel endpoint, which also function as a default router with respect to a mobile node MN, form an FA function (referred to as a virtual FA). Further, an HA control server (9) that processes only Mobile IP signaling, and an IP tunnel router (8b), being an IP tunnel endpoint, form an HA function (referred to as a virtual HA). Here, the relation between the FA control servers (7a,7b) and the IP tunnel routers (8a,8c), and the relation between the HA control server (9) and the IP tunnel router (8b) are such that the former is a Media Gateway Controller (MGC) and the latter is a Media Gateway (MG). The FA control server (7a) notifies a mobile node MN (2) of the own address as an FA care-of address, in the form of a regular broadcast or query response. The IP tunnel router (8a) constituting the virtual FA notifies the mobile node MN (2) of an address, being a default router, in the form of a regular broadcast or query response.

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