Communication apparatus and relay apparatus for performing...

Details Communication apparatus and relay apparatus for performing... Communication apparatus and relay apparatus for performing...

2008-01-15

2008-01-15

Vu, Huy D. (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395420

Reexamination Certificate

active

10162793

ABSTRACT:
In a communication system, a first communication apparatus includes: an application data generating unit for generating application data including data at an application level and a priority at the application level; and a lower-level packet generating unit disposed therein for generating a packet by adding to the application data a header including a destination address and a source address at a level lower than the application level. A first relay apparatus includes: a priority identifying unit disposed therein for determining whether or not a priority is set in the application data of the packet received by the first relay apparatus, and thereby identifying a first priority at the application level; and a priority control unit disposed therein for renewing a TOS field value in the header of the packet, the header being at the level lower than the application level, on the basis of the first priority.

REFERENCES:
patent: 6735175 (2004-05-01), Havens
patent: 6944678 (2005-09-01), Lu et al.
patent: 6973085 (2005-12-01), Acharya
patent: 2005/0117576 (2005-06-01), McDysan et al.
patent: 2005/0283734 (2005-12-01), Santoro et al.
patent: 09-205461 (1997-08-01), None

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