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:
Dec. 11, 2007
Filed:
May. 29, 2002
Eriko Okuno, Tokyo, JP;
Eriko Okuno, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A ring network having a plurality of nodes connected by a working channel and a protection channel. When no failure exists, the working channel and the protection channel are link-aggregated into one virtual channel, and the transmission of the working traffic is carried out using both channels. When failure occurred to a line of the network, the link aggregation is suspended and a protection function in conjunction with the link aggregation is activated, in which a path avoiding the failure point is established by means of layer 1 protection process and thereafter data transmission is carried out by use of the path established by the layer 1 protection function. Therefore, data transmission in the no failure stated can be conduced using a bandwidth of twice as large as that of convention ring networks.