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:
Jul. 02, 2013
Filed:
May. 24, 2010
Kwang Koog Lee, Daejeon, KR;
Jeong Dong Ryoo, Daejeon, KR;
Sang Min Lee, Daejeon, KR;
Dae Ub Kim, Daejeon, KR;
Jea Hoon Yu, Daejeon, KR;
Tea Whan Yoo, Daejeon, KR;
Kwang Koog Lee, Daejeon, KR;
Jeong Dong Ryoo, Daejeon, KR;
Sang Min Lee, Daejeon, KR;
Dae Ub Kim, Daejeon, KR;
Jea Hoon Yu, Daejeon, KR;
Tea Whan Yoo, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A method for updating a filtering database in a multi-ring network, includes: when the topology of a lower ring in a multi-ring network, in which a plurality of ring networks are connected by two ring connection nodes, is altered and the ring connection node detects the alteration in the topology of the lower ring, erasing, by the ring connection node, its filtering database; generating, by the ring connection node, a control message including a ring ID, a blockage flag, and an erasure flag; transmitting the control message in both directions of the ring; and determining, by a node which receives the control message, to erase a filtering database by referring to and correcting the blockage and erasure flag information included in the control message.