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:
Mar. 11, 2014
Filed:
Apr. 28, 2010
Dajiang Wang, Shenzhen, CN;
Zhenyu Wang, Shenzhen, CN;
Dajiang Wang, Shenzhen, CN;
Zhenyu Wang, Shenzhen, CN;
ZTE Corporation, Shenzhen, Guangdong Province, CN;
Abstract
In order to achieve the discovery and calculation of interlayer paths, a method for calculating an interlayer path is proposed by the present invention, comprising: a label switch router (LSR) of a layer selecting a path calculation element (PCE) of the layer according to the received discovery information of each PCE and sending thereto a path calculation request for the LSR, wherein the above discovery information comprises: indication information and interlayer information, with the indication information indicating whether the PCE can be used as a default interlayer path calculation element of the layer, and the interlayer information indicating a layer where the PCE is located and an adjacent layer thereof; when a path of the LSR is disconnected, selecting based on the interlayer information a path calculation element (PCE) of the next layer and sending thereto a path calculation request for the disconnected portion of the path until the path is connected; and replying a path calculation result to the PCE of the layer.