End-to-end prioritized data delivery on networks using IP over frame relay

Patent 6993043 Issued on January 31, 2006. Estimated Expiration Date:

November 13, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

AT&T Corp.

Application

No. 09711549 filed on 11/13/2000

US Classes:

370/466, Converting between protocols370/469, Processing multiple layer protocols709/236, Computer-to-computer data framing709/240, Prioritized data routing370/396, Distributed switching370/352, Combined circuit switching and packet switching370/389, Switching a message which includes an address header370/401, Bridge or gateway between networks370/230Control of data admission to the network

Examiners

Primary: Ngo, Ricky
Assistant: Duong, Duc

Foreign Patent References

0 869 695 EP 10/01/1998
0 889 667 EP 01/01/1999
WO 01 97470 WO 12/01/2001

International Class

H04L 12/66

Abstract

The invention provides methods and systems for providing priority processing to critical data as the data is transmitted across a network. A plurality of Internet protocol (IP) packets, each of which contains data and priority information, are received at a first router. The data contained in the IP packets is then encapsulated into frame relay frames containing the priority information. The frame relay frames are transmitted from the first router to a frame relay network in a manner determined by the priority information included in the frame relay frames. The frame relay frames are then transmitted across a frame relay network to a second router in a manner determined by the priority information included in the frame relay frames.