Title:
FAULT PROTECTION METHOD, DEVICE AND SYSTEM FOR OPTICAL NETWORK
Document Type and Number:
WIPO Patent Application WO/2020/248634
Kind Code:
A1
Abstract:
Disclosed is a fault protection method for an optical network. The method comprises: a cross-layer controller connecting an optical network and an IP network sending, to an optical controller in the optical network, an indication that a first optical service in an optical fiber belongs to a first priority and a second optical service in the optical fiber belongs to a second priority, wherein the first priority is related to the characteristics of a first IP link in the IP network, and the second priority is related to the characteristics of a second IP link in the IP network. When a fault occurs in the optical fiber, a protection priority of any optical service belonging to the first priority is higher than a protection priority of any optical service belonging to the second priority. In this method, a cross-layer controller sends, to an optical controller, indication information indicating that different optical services belong to different priorities, and when a fault occurs in an optical network, the optical controller determines a protection order of the different optical services according to the priorities. Therefore, random behaviors during optical network fault protection are avoided, and targeted optical network fault protection is provided.
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Inventors:
HUANG SHIJING (CN)
SHI XIANLIANG (CN)
SUN CHANGSHENG (CN)
SHI XIANLIANG (CN)
SUN CHANGSHENG (CN)
Application Number:
PCT/CN2020/078317
Publication Date:
December 17, 2020
Filing Date:
March 07, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B10/032
Domestic Patent References:
| WO2002054629A1 | 2002-07-11 |
Foreign References:
| CN103746841A | 2014-04-23 | |||
| CN1592267A | 2005-03-09 | |||
| CN103490920A | 2014-01-01 | |||
| CN104539445A | 2015-04-22 | |||
| CN201910512568A | 2019-06-13 |
Other References:
See also references of EP 3968545A4
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