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Title: Estimation of network path segment delays

Abstract

A method for estimation of a network path segment delay includes determining a scaled time stamp for each packet of a plurality of packets by scaling a time stamp for each respective packet to minimize a difference of at least one of a frequency and a frequency drift between a transport protocol clock of a host and a monitoring point. The time stamp for each packet is provided by the transport protocol clock of the host. A corrected time stamp for each packet is determined by removing from the scaled time stamp for each respective packet, a temporal offset between the transport protocol clock and the monitoring clock by minimizing a temporal delay variation of the plurality of packets traversing a segment between the host and the monitoring point.

Inventors:
Issue Date:
Research Org.:
Pollere Inc., Montara, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1437247
Patent Number(s):
9961000
Application Number:
15/134,805
Assignee:
Pollere Inc. (Montara, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
DOE Contract Number:  
SC0009498
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Apr 21
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Nichols, Kathleen Marie. Estimation of network path segment delays. United States: N. p., 2018. Web.
Nichols, Kathleen Marie. Estimation of network path segment delays. United States.
Nichols, Kathleen Marie. Tue . "Estimation of network path segment delays". United States. https://www.osti.gov/servlets/purl/1437247.
@article{osti_1437247,
title = {Estimation of network path segment delays},
author = {Nichols, Kathleen Marie},
abstractNote = {A method for estimation of a network path segment delay includes determining a scaled time stamp for each packet of a plurality of packets by scaling a time stamp for each respective packet to minimize a difference of at least one of a frequency and a frequency drift between a transport protocol clock of a host and a monitoring point. The time stamp for each packet is provided by the transport protocol clock of the host. A corrected time stamp for each packet is determined by removing from the scaled time stamp for each respective packet, a temporal offset between the transport protocol clock and the monitoring clock by minimizing a temporal delay variation of the plurality of packets traversing a segment between the host and the monitoring point.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

Works referenced in this record:

Regenerating TCP Dynamics From Traces Path Characteristics
conference, May 2007


Frequency Offset Compensation for Wifi Ranging
patent-application, July 2014


Network Clock Skew Estimation and Calibration
patent-application, November 2016


On calibrating measurements of packet transit times
journal, June 1998


Method for Generating a Robust Timing Correction in Timing Transfer Systems
patent-application, October 2012


Method and Devices for Synchronization Using Linear Programming
patent-application, June 2015


New Methods for Passive Estimation of TCP Round-Trip Times
conference, January 2005


Estimation and removal of clock skew from network delay measurements
conference, January 1999


Method and Devices for Compensating for Path Asymmetry
patent-application, April 2015


System and Method for Accounting for Time that a Packet Spends in Transit through a Transparent Clock
patent-application, April 2013


Method and System for Clock Offset and Skew Estimation
patent-application, March 2014


Passive bufferbloat measurement exploiting transport layer information
conference, December 2013


Method and Apparatus for Time and Frequency Transfer in Communication Networks
patent-application, November 2009


Method for Measuring IP Network Performance and Controlling QoS, and Apparatus and System Thereof
patent-application, February 2012


Delay Measurements in Network Traffic
patent-application, June 2008