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:
May. 10, 1994
Filed:
Sep. 10, 1992
Hamid Ahmadi, Somers, NY (US);
Jeffrey, H Derby, Chapel Hill, NC (US);
Roch Guerin, Yorktown Heights, NY (US);
Levent Gun, Durham, NC (US);
Gerald A Marin, Chapel Hill, NC (US);
Mahmoud Naghshineh, Fishkill, NY (US);
Khosrow Sohraby, Mahopac, NY (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
A congestion control system for packet communications networks in which access to the network is controlled to prevent such congestion. Packets within the prespecified statistical description of each packet source are marked as high priority ('green' packets) while packets exceeding the pre-specified characteristics are marked with a lower priority ('red' packets). The overall red packet rate is limited to prevent red packet saturation of the network. Packets are marked red for a continuous train of successive red packets. The introduction of red packets into the network is subjected to a degree of hysteresis to provide better interaction with higher layer error recovery protocols. The amount of hysteresis introduced into the red packet marking can be fixed or varied, depending on the statistics of the incoming data packets at the entry point to the network.