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. 06, 2001
Filed:
Sep. 30, 1997
Gregory D. Troxel, Stow, MA (US);
BBN Corporation, Cambridge, MA (US);
Abstract
A system and method for optimizing and managing Qos (Quality of Service) in a network system including a plurality of open point-to-multipoint virtual circuits (VC)s between various endpoint sites, for example in multicast systems. VC optimization includes determining more appropriate set of VC endpoints to reduce oversent data. If below the VC limit, a set of potential VCs is determined, the set excluding combinations with VC connections already open. An estimation or calculation is performed to determined a reduction in oversent data that would occur if that a possible VC was opened. The possible VC with the greatest reduction in oversent data is then opened. Appropriate traffic is moved over to the newly opened VC, and any VCs which no longer have any traffic are closed. If a VC limit is reached for a node, a different optimization technique is used. A set of possible VCs to endpoint sites is determined. From this set, a new VC to open is selected which, if opened, would cause the greatest reduction in oversent data. From the presently opened VCs, an open VC is selected which, if closed, would cause the least increase in oversent data. The new VC is opened, and appropriate traffic and flows are moved to it. The open (old) VC is then closed. These optimization techniques are alternated with other optimization techniques.