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Estimation of network path segment delays

Patent ·
OSTI ID:1437247
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.
Research Organization:
Pollere Inc., Montara, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0009498
Assignee:
Pollere Inc. (Montara, CA)
Patent Number(s):
9,961,000
Application Number:
15/134,805
OSTI ID:
1437247
Country of Publication:
United States
Language:
English

References (5)

New Methods for Passive Estimation of TCP Round-Trip Times conference January 2005
Passive bufferbloat measurement exploiting transport layer information conference December 2013
On calibrating measurements of packet transit times journal June 1998
Estimation and removal of clock skew from network delay measurements conference January 1999
Regenerating TCP Dynamics From Traces Path Characteristics conference May 2007

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