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:
Feb. 24, 2009
Filed:
Dec. 12, 2005
Shantala G. Krishna, Karnataka, IN;
Uma Krishnan, Austin, TX (US);
Kavitha Ramalingam, Karnataka, IN;
Venkat Venkatsubra, Austin, TX (US);
Shantala G. Krishna, Karnataka, IN;
Uma Krishnan, Austin, TX (US);
Kavitha Ramalingam, Karnataka, IN;
Venkat Venkatsubra, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, network receiver and TCP network that enables a receiver-side triggering of the fast retransmit mechanism when a TCP packet/segment is lost or received out-of sequencing order. The receiver is enhanced with a Fast Retransmit Support (FRS) utility that monitors when a next received packet is out-of-order and responds by transmitting a duplicate acknowledgment (ACK) response that includes therein the same window value as the previous ACK. By including the previous clock time, even when the current window value has advanced, the fast retransmit algorithm at the transmitter is triggering before the timeout period.