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:
Oct. 15, 2002
Filed:
May. 31, 2000
David N. Peck, Northbridge, MA (US);
Fujitsu Network Communications, Inc., Richardson, TX (US);
Abstract
A network device operates to control the clumping of cells on a connection using a rate-based flow-control protocol. In each of successive intervals, a number N is calculated representing the maximum number of cells permitted to be transmitted consecutively. N is calculated as the quotient from dividing a cell delay variation tolerance (CDVT) by the difference between the reciprocal of an allowed cell rate (ACR) and the reciprocal of a link cell rate (LCR). If the calculated quotient is greater than a number N for the connection indicating the maximum number of data cells allowed between forward flow-control cells, then N is set equal to N . A value C is calculated as the largest integer factor of N that is no greater than N, and the interval is then divided into N /C sub-intervals. No more than C cells are allowed to be transmitted on the connection in each of the sub-intervals. This limit is enforced using a credit mechanism in which no more than C credits are extended to a cell transmitter in each sub-interval.