Gateway unit

Details Gateway unit Gateway unit

2011-01-18

2011-01-18

Kumar, Pankaj (Department: 2467)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S230100, C370S400000, C370S401000, C370S402000

Reexamination Certificate

active

07872971

ABSTRACT:
The invention is to solve the problem in that mutual communication between an IPv6-capble device and an IPv4-capble device has not been carried out in a system wherein the IPv6-capble device and the IPv4-capble device are mixed. An entry of a live list is retrieved when SM Device Annunciation is received from the IPv6-capble device, and a transmission IPv4 address is acquired from an IPv4 address pool if the entry is not found, thereby preparing translation rules so as to be stored in a translation rules storage section, while preparing an entry to be registered in the live list, whereby an IP address in a message is translated with reference to the translation rules. Further, a timestamp of the entry is updated every time when the SM Device Annunciation is received. Even if the address is contained in the message, the mutual communication between the IPv6-capble device and the IPv4-capble device can be carried out, and devices connected to the system can be controlled.

REFERENCES:
patent: 2006/0215649 (2006-09-01), Morrall et al.
patent: 2007/0076724 (2007-04-01), Hall et al.
patent: 2002-132309 (2002-05-01), None
patent: 2005-531229 (2005-10-01), None
patent: 04/002031 (2003-12-01), None

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