EP 1228592 A2 20020807 - 1+1 FAULT PROTECTION IN A NETWORK OF OPTICAL CROSS-CONNECT SWITCHING SYSTEMS
Title (en)
1+1 FAULT PROTECTION IN A NETWORK OF OPTICAL CROSS-CONNECT SWITCHING SYSTEMS
Title (de)
1+1 FEHLERSCHÜTZUNG IN EINEM NETZ VON OPTISCHER QUERVERBINDUNGS VERMITTLUNGSSYSTEME
Title (fr)
PROTECTION 1+1 DANS UN RESEAU DE SYSTEMES DE COMMUTATION A REPARTITEUR OPTIQUE
Publication
Application
Priority
- US 0041874 W 20001102
- US 16293699 P 19991102
- US 17009499 P 19991210
- US 17009599 P 19991210
- US 17009399 P 19991210
- US 17009299 P 19991210
- US 18610800 P 20000301
- US 20042500 P 20000428
- US 70444600 A 20001101
Abstract (en)
[origin: WO0139413A2] The present invention provides methods, systems, and data communication networks for providing fault protection in an optical network. In one embodiment, the present invention includes a source node having an optical cross-connect switching system that has a source port card with a splitter to split an input optical signal into two similar optical signals. The two similar optical signals contain the same information. A source optical switching device switches one of the two similar optical signals to a first destination port card and onto an adjacent node and the other one of the similar optical signals to a second destination port card and onto a different adjacent node, respectively, such that the two similar optical signals are then diversely routed through the optical network. A destination node having an optical cross-connect switching system receives the two similar optical signals via first and second source port cards, respectively. The optical cross-connect switching system of the destination node includes a destination optical switching device to switch each of the two similar optical signals to a destination port card having a selector switch. The selector switch selects one of the available two similar optical signals, such that, if one of the diversely routed similar optical signals fails to reach the destination node, due to a fault in the optical network, the other one of the similar optical signals is still available. Thus, the same information is provided to the destination port card of the destination node and 1+1 optical fault protection is provided for the optical network.
IPC 1-7
IPC 8 full level
H04Q 11/00 (2006.01); G02B 6/43 (2006.01)
CPC (source: EP)
H04Q 11/0062 (2013.01); G02B 6/43 (2013.01); H04Q 2011/0024 (2013.01); H04Q 2011/0026 (2013.01); H04Q 2011/0041 (2013.01); H04Q 2011/0043 (2013.01); H04Q 2011/005 (2013.01); H04Q 2011/0073 (2013.01); H04Q 2011/0081 (2013.01); H04Q 2011/0083 (2013.01)
Citation (search report)
See references of WO 0139413A2
Designated contracting state (EPC)
AT BE CH DE FR GB LI
DOCDB simple family (publication)
WO 0139413 A2 20010531; WO 0139413 A3 20020207; AU 4302201 A 20010604; CA 2389589 A1 20010531; EP 1228592 A2 20020807
DOCDB simple family (application)
US 0041874 W 20001102; AU 4302201 A 20001102; CA 2389589 A 20001102; EP 00992313 A 20001102