The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2010
Filed:
Nov. 30, 2005
Applicant:
Guglielmo M. Morandin, Palo Alto, CA (US);
Inventor:
Guglielmo M. Morandin, Palo Alto, CA (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/08 (2006.01); H04J 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to the present invention, methods and apparatus are provided for determining components of a round trip time (RTT). A source node sends data to a destination node. The destination node inserts a timestamp into an acknowledgment and sends the acknowledgment back to the source node. The source node determines the RTT from its own measurements and estimates reverse path delay by comparing timestamps to expected timestamps. Considerations for destination node timestamp speed differences are provided.