Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2007-11-06
2007-11-06
Phan, Man U. (Department: 2616)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S229000, C370S389000, C709S224000
Reexamination Certificate
active
10307133
ABSTRACT:
An architecture for measurement of per-hop, one-way delay includes a input observation circuit (24) at the input interface of a node (12) and a output observation circuit (26) at the output interface (16) of a node (12). The input observation circuit (24) copies and time stamps the headers of incoming packets, and filters packets according to an aggregate definition. Similarly, the output observation circuit (26) copies and time stamps the headers of outgoing packets, and filters packets according to the aggregate definition. The incoming and outgoing traces are correlated to calculate a delay measurement. A packet loss measurement uses input observation circuits (72aand72b) at the input interfaces (14) of upstream and downstream nodes (20and22) and an output observation circuit74at the output interface (16) of the upstream node. The observation circuits (72a, 72band74) determine the number of lost packets across a node and between nodes, according to an aggregate definition.
REFERENCES:
patent: 5521907 (1996-05-01), Ennis et al.
patent: 5793976 (1998-08-01), Chen et al.
patent: 6112236 (2000-08-01), Dollin et al.
patent: 6445681 (2002-09-01), Pogrebinsky
patent: 6738349 (2004-05-01), Cen
patent: 6751663 (2004-06-01), Farrell et al.
patent: 6769029 (2004-07-01), Seki et al.
patent: 6831890 (2004-12-01), Goldsack et al.
patent: 6853619 (2005-02-01), Grenot
patent: 6978223 (2005-12-01), Milliken
patent: 7123589 (2006-10-01), Dawes et al.
patent: 2006/0077902 (2006-04-01), Kannan et al.
patent: 2200008 (1998-09-01), None
patent: 2 342 527 (2000-04-01), None
patent: 2 355 901 (2001-05-01), None
patent: 2000-196593 (2000-07-01), None
patent: 2001-053792 (2001-02-01), None
patent: 2001-069146 (2001-03-01), None
patent: 2001-127795 (2001-05-01), None
patent: 2001-148710 (2001-05-01), None
patent: WO 01/20825 (2001-03-01), None
Hofmann, et al.; One-Way-Delay Measurements with CM Toolset; IPCCC 2000; pp. 41-47.
Kata, et al.; Actiev Measurement and analysis of Delay Time in the Internet; Waseda University; Apr. 1, 1999.
Black, et al.; Per Hop Behavior Identification Codes: IETF Network Working Group; RFC 3140: Jun. 2001.
Nichols, et al.; Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers; IETF Network Working Group; RFC 2474; Dec. 1998.
Alcatel Lucent
Hoersten Craig A.
Phan Man U.
Smith Jessica W.
LandOfFree
Measurement architecture to obtain per-hop one-way packet... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Measurement architecture to obtain per-hop one-way packet..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement architecture to obtain per-hop one-way packet... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3860533