Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2006-08-29
2006-08-29
Patel, Ajit (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S505000
Reexamination Certificate
active
07099352
ABSTRACT:
A transmitting system inserts runt abort packets in an outgoing data stream during idle time inter-frame time fill. The runt abort packets cause the receiving system to synchronize itself to the transmitting system so that even if an error during inter-frame time fill causes the receiving system to go into an erroneous state, the receiving system will be synchronized with the transmitting system before receiving valid data. In one embodiment, the transmitting system transmits data in packets over SONET. The packet data is scrambled at the transmitting end and descrambled at the receiving end. Runt abort packets sent during inter-frame time fill resynchronize the descrambler. If there is an error in the inter-frame time fill bytes, causing the receiving end descrambler to no longer be synchronized with the transmitting end scrambler, the runt abort packets will cause the descrambler to resynchronize state with the transmitting scrambler.
REFERENCES:
patent: 4679193 (1987-07-01), Jensen et al.
patent: 4922503 (1990-05-01), Leone
patent: 5123014 (1992-06-01), Federkins et al.
patent: 5410536 (1995-04-01), Shah et al.
patent: 5461618 (1995-10-01), Chen et al.
patent: 5530959 (1996-06-01), Amrany
patent: 5778189 (1998-07-01), Kimura et al.
patent: 5835602 (1998-11-01), Lang
patent: 5845085 (1998-12-01), Gulick
patent: 5854840 (1998-12-01), Cannella, Jr.
patent: 6128313 (2000-10-01), Chapman et al.
patent: 6188699 (2001-02-01), Lang et al.
patent: 6249525 (2001-06-01), Aggarwal et al.
patent: 6263443 (2001-07-01), Anderson et al.
patent: 6317236 (2001-11-01), Saunders
patent: 6442170 (2002-08-01), Perlman et al.
W. Simpson; “PPP in HDLC-like Framing;” Jul. 1994; pp. 1-23.
S. Merchant; “PPP over SONET (SDH) at Rates from STS-1 (AU-3) to STS-192c (AU-4-64c/STM-64;” Nov. 1998; pp. 1-14.
D. Ferguson et al.; “Self-Synchronous Scramblers For PPP Over Sonet/SDH: Some Analysis;” Nov. 1997; pp. 1-18.
A. Malis et al.; “PPP over SONET/SDH;” Jun. 1999; pp. 1-9.
J. Manchester et al.; “Enabling Transparency for the PPP over SONET/SDH Mapping;” Nov. 21, 1997; pp. 1-6.
J. Carlson et al.; “PPP over Simple Data Link (SDL) Using Raw Lightware Channels With ATM-like Framing;” Jun. 1999; pp. 1-18.
Hewlett-Packard Company; “Packet Over SONET/SDH: An Efficient, Cost-effective Alternative to ATM;” © 1999; pp. 1-4.
J. Carlson et al.; “PPP over Simple Data Link (SDL) using SONET/SDH with ATM-like framing;” May 2000; pp. 1-21.
Optical Networking News and Analysis; “SONET;” © 2000 Phillips Business Information LLC; pp. 1-4.
Chen Devereaux C.
Ferguson Dennis C.
Padmanabhan Ramesh
Skibo Thomas Michael
Verwillow Eric M.
Harrity & Snyder LLP
Juniper Networks, Inc.
Lee Andrew C.
Patel Ajit
LandOfFree
System, apparatus, and method for increasing resiliency in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System, apparatus, and method for increasing resiliency in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System, apparatus, and method for increasing resiliency in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3637232