Multiplex communications – Fault recovery
Reexamination Certificate
2011-08-30
2011-08-30
Harper, Kevin C (Department: 2462)
Multiplex communications
Fault recovery
Reexamination Certificate
active
08009554
ABSTRACT:
A method for achieving multiple link quality of service for video and voice calls over Internet links, or over IP links running in private networks, is described. This method applies to both the non-mobile domain (alternate paths exist in one place at the same time) as well as the mobile domain (one path is used at any one place at a given time, but the user device roams from place to place). This method can be implemented as either computer software or other digital logic (ASIC or FPGA). Using this invention, voice and video calls can be moved at will from one path to another, as many times as required during a single conversation, without breaking the RTP voice or video payload stream. The benefit is that embodiments of this invention have a significantly higher probability that a call never breaks under various conditions of quality degrade. This includes the case of link and router failures, which are treated as a special case of quality degrade in the context of voice and video.
REFERENCES:
patent: 2003/0156559 (2003-08-01), Yi et al.
patent: 2006/0193295 (2006-08-01), White et al.
patent: 2007/0253413 (2007-11-01), Citron et al.
patent: 2008/0130574 (2008-06-01), Nam et al.
Can You Hear Me Now?!; It Must Be BGP; Nate Kushman; Srikanth Kandula; Dina Katabi; 6-pages.
draft-rosenberg-sip-entfw-02.txt; Internet Engineering Task Force; SIP WG; Internet Draft; Jonathan Rosenberg Joel Weinberger, Henning Schulzrinne; dynamicsoft, Columbia U.; Jul. 20, 2001; Expires: Feb. 2002; NAT Friendly SIP; 29-pages.
draft-rosenberg-sipping-NAT-scenarios-00.txt; Internet Engineering Task Force; Sipping WG; Internet Draft; Jonathan Rosenberg; Rohan Mahy, Sanjoy Sen; dynamicsoft, Cisco, Nortel; Nov. 14, 2001; Expires: Mar. 2002; NAT and Firewall Scenarios and Solutions for SIP; 57-pages; Internet Draft; NAT scenarios; Nov. 16, 2001.
Port address translation; From Wikipedia, the free encyclopedia.
Network Working Group; Request for Comments: 1631; Category: Informational; Cray Communications; Kjeld Borch Egevang and Paul Francis; NTT; May 1994; the IP Network Address Translator (NAT); 10-pages.
Network Working Group; Request for Comments: 1771; Yakov Rekhter, T.J. Watson Research Center IBM Corp.; Obsoletes: 1654; Tony Li, cisco Systems, Inc., Editors; Category: Standards Track;A Border Gateway Protocol 4 (BGP-4); Mar. 1995; 57-pages; document was originally published as RFC 1267 in Oct. 1991, jointly authored by Kirk Lougheed (cisco Systems) and Yakov Rekhter (IBM).
Network Working Group; Request for Comments: 1889; Category: Standards Track; RTP: A Transport Protocol for Real-Time Applications; Audio-Video Transport Working Group; Henning Schulzrinne, GMD Fokus; Stephen L. Casner, Precept Software, Inc.; Ron Frederick, Xerox Palo Alto Research Center, Van Jacobson, Lawrence Berkeley National Laboratory; Jan. 1996; 75-pages.
Network Working Group; Request for Comments: 2131; Obsoletes: 1541; Category: Standards Track; Dynamic Host Configuration Protocol; Ralph Droms; Bucknell University; Mar. 1997; 45-pages.
Network Working Group; Request for Comments: 2327; Category: Standards Track; SDP: Session Description Protocol; Mark Handley and Van Jacobson; ISI/LBNL; Apr. 1998; 42-pages.
Network Working Group; Request for Comments: 2516; Category: Informational; A Method for Transmitting PPP Over Ethernet (PPPoE); Louis Mamakos, Kurt Lidl and Jeff Evarts, Uunet Technologies, Inc.; David Carrel and Dan Simone, RedBack Networks, Inc.; Ross Wheeler; RouterWare, Inc.; Feb. 1999; 17 pages.
Network Working Group; Request for Comments: 3261; Obsoletes: 2543; Category: Standards Track; SIP: Session Initiation Protocol; Jonathan Rosenberg, dynamicsoft; Henning Schulzrinne, Columbia University; Gonzalo Camarillo, Ericsson; Alan Johnston, WorldCom; Jon Peterson, NeuStar; Robert Sparks, dynamicsoft; Mark Handley, ICIR; Eve Schooler, AT&T; Jun. 2002; 269-pages.
Bhaskaran Sajit
Chin Bill
Mavunkel Robin
Aspen Networks, Inc.
Harper Kevin C
Orrick Herrington & Sutcliffe LLP
LandOfFree
Method for multiple link quality of service for voice and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for multiple link quality of service for voice and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for multiple link quality of service for voice and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2715517