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. 03, 2004
Filed:
Oct. 19, 1999
Kenichi Kawarai, Kawasaki, JP;
Hiroshi Tomonaga, Kawasaki, JP;
Naoki Matsuoka, Kawasaki, JP;
Naotoshi Watanabe, Kawasaki, JP;
Yasuhiro Ooba, Kawasaki, JP;
Hichiro Hayami, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The invention relates to a bandwidth control apparatus in ATM equipment, for inserting management cells such as OAM cells, the control apparatus being configured to secure a bandwidth for the insertion of a management cell such as an OAM cell when the need arises, while guaranteeing the service quality of user cells, thereby making effective use of network resources for a best effort service such as ABR or UBR. The bandwidth control apparatus comprises a cell insertion block - for inserting a management cell such as an OAM cell and a shaping block - for performing user cell shaping, wherein the cell insertion block - issues an empty cell request when a cell insertion request occurs, the shaping block - upon receiving the empty cell insertion request, inserts an empty cell in a user cell stream being output from a shaping buffer - and the cell insertion block - writes a management cell such as an OAM cell over the empty cell inserted on a cell highway - thus sending the management cell out on the cell highway -