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US Patent 6993043 - End-to-end prioritized data delivery on networks using IP over frame relay

US Patent Issued on January 31, 2006
Estimated Patent Expiration Date: Icon_subject November 13, 2020Estimated 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.
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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.

Inventors

Assignee

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

Field of Search

370/386, Particular switching network arrangement370/389, Switching a message which includes an address header370/392, Processing of address header for routing, per se370/395.63, Adapting frame relay/X.25 data (e.g., using AAL 3/4)370/465, Adaptive370/466, Converting between protocols370/474, Assembly or disassembly of messages having address headers370/252, Determination of communication parameters370/469Processing multiple layer protocols

Examiners

Primary: Ngo, Ricky
Assistant: Duong, Duc

US Patent References

5519640, Multimedia frame relay codec
Issued on: 05/21/1996
Inventor: Ganesan, et al.
5699521, Communication system and communication method
Issued on: 12/16/1997
Inventor: Iizuka, et al.
5734654, Frame relay switching apparatus and router
Issued on: 03/31/1998
Inventor: Shirai, et al.
6028858, ANI-dormant connections for frame relay
Issued on: 02/22/2000
Inventor: Rivers, et al.
6081507, Methods and apparatus for handling time stamp aging
Issued on: 06/27/2000
Inventor: Chao, et al.
6081524, Frame relay switched data service
Issued on: 06/27/2000
Inventor: Chase, et al.
6144669Prioritized PVC management queues for improved frame processing capabilities
Issued on: 11/07/2000
Inventor: Williams, et al.

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

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