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:
Jun. 22, 2010
Filed:
Apr. 11, 2008
Kavitha Vittal Murthy Baratakke, Austin, TX (US);
Vinit Jain, Austin, TX (US);
Vasu Vallabhaneni, Austin, TX (US);
Venkat Venkatsubra, Austin, TX (US);
Kavitha Vittal Murthy Baratakke, Austin, TX (US);
Vinit Jain, Austin, TX (US);
Vasu Vallabhaneni, Austin, TX (US);
Venkat Venkatsubra, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
TCP congestion avoidance is implemented upon retransmission of a packet and is reverted back to the original congestion state upon receipt of an early acknowledgement (ACK), indicating reordering of packets, thereby eliminating a needless restriction on TCP bandwidth. Upon receiving an ACK to a retransmitted packet, it is determined if the ACK resulted from receipt of the original reordered packet or the retransmitted packet, based on the arrival time of the ACK at the sender. If the round-trip-time (RTT) for the retransmitted packet is much lower than the average or current calculated RTT for the network link between sender and receiver, then the retransmission occurred as a result of a reordering event, and the congestion window is restored back to its value prior to the retransmission, thereby permitting the network link to continue operating at its original increased throughput.