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:
Sep. 05, 2006
Filed:
Mar. 04, 2002
Robert Sultan, Katonah, NY (US);
Ajay Sahai, Shrewsbury, MA (US);
Sushil Pandhi, Mahwah, NJ (US);
Zubao Yang, Maywood, NJ (US);
Robert Sultan, Katonah, NY (US);
Ajay Sahai, Shrewsbury, MA (US);
Sushil Pandhi, Mahwah, NJ (US);
Zubao Yang, Maywood, NJ (US);
Fujitsu Limited, Kanagawa-ken, JP;
Abstract
A ring network provides transparent local area network (LAN) service by allocating respective proportions of data transmission capacity of the ring to different closed user groups (CUGs), each including a plurality of LAN clients. At each node of the ring, the use of a connected segment of the ring is monitored for both pass-through and locally-generated traffic by the LAN clients on a per-CUG basis. When it is detected that use of the connected segment for a CUG is approaching the allocated proportion, an active LAN client of the CUG is selected and sent a throttle message indicating that the LAN client is to reduce its data transmission rate. Rate monitoring for is accomplished using a 'leaky bucket' mechanism. A 'rate cache' identifying the active senders and their transmission rates can also be used in selecting a LAN client for receiving the throttle message.