1+1 fault protection in a network of optical cross-connect switching systems
Abstract
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.
Term
No projected expiry on record.
- Priority
- Filed
- Published
- Today
Every citation, both waysCites: the store holds 2 of 3
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0857000A2 | Cites | European Patent Office (EPO) | A | International search | 1-62 |
| EP0938244A2 | Cites | European Patent Office (EPO) | A | International search | 1-62 |
| LIN L Y ET AL: "MICRO-ELECTRO-MECHANICAL SYSTEMS (MEMS) FOR WDM OPTICAL-CROSSCONNECT NETWORKS", MILCOM 1999. IEEE MILITARY COMMUNICATIONS CONFERENCE PROCEEDINGS. ATLANTIC CITY, NJ, OCT 31 - NOV. 3, 1999, IEEE MILITARY COMMUNICATIONS CONFERENCE, NEW YORK, NY: IEEE, US, vol. 2 OF 2 CONF. 18, 31 October 1999 (1999-10-31), pages 954 - 957, XP000922128, ISBN: 0-7803-5539-3 | Non-patent | – | – | International search | – |
| AKIRA HIMENO ET AL: "PHOTONIC INTER-MODULE CONNECTOR USING 8 X 8 OPTICAL SWITCHES FOR NEAR-FUTURE ELECTRONIC SWITCHING SYSTEMS", IEICE TRANSACTIONS ON COMMUNICATIONS, INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, JP, vol. E77-B, no. 2, 1 February 1994 (1994-02-01), pages 155 - 162, XP000447106, ISSN: 0916-8516 | Non-patent | – | – | International search | – |
42 members in 5 offices
Priority claims24
| Document | Office | Kind | Date |
|---|---|---|---|
| 16293699 | United States of America | P | |
| 17009299 | United States of America | P | |
| 17009399 | United States of America | P | |
| 17009499 | United States of America | P | |
| 17009599 | United States of America | P | |
| 18610800 | United States of America | P | |
| 20042500 | United States of America | P | |
| 70444600 | United States of America | A | |
| 09704446 | – | – | – |
| 60162936 | – | – | – |
| 60170092 | – | – | – |
| 60170093 | – | – | – |
| 60170094 | – | – | – |
| 60170095 | – | – | – |
| 60186108 | – | – | – |
| 60200425 | – | – | – |
| US19990162936P | – | – | – |
| US19990170092P | – | – | – |
| US19990170093P | – | – | – |
| US19990170094P | – | – | – |
| US19990170095P | – | – | – |
| US20000186108P | – | – | – |
| US20000200425P | – | – | – |
| US20000704446 | – | – | – |
Members42
| Document | Office | Kind | |
|---|---|---|---|
| CA2389527A1 | Canada | A1 | |
| CA2389721A1 | Canada | A1 | |
| CA2389735A1 | Canada | A1 | |
| CA2389758A1 | Canada | A1 | |
| CA2389948A1 | Canada | A1 | |
| WO0133746A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO0133895A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO0133896A1 | World Intellectual Property Organization (WIPO) | A1 | |
| WO0133897A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO0133898A2 | World Intellectual Property Organization (WIPO) | A2 | |
| AU1360601A | Australia | A | |
| AU3071901A | Australia | A | |
| AU3262201A | Australia | A | |
| AU3634301A | Australia | A | |
| AU3641001A | Australia | A | |
| CA2389589A1 | Canada | A1 | |
| WO0139413A2 | World Intellectual Property Organization (WIPO) | A2 | |
| AU4302201A | Australia | A | |
| WO0133897A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO0133898A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO0133895A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO0139413A3This record | World Intellectual Property Organization (WIPO) | A3 | |
| WO0133895B1 | World Intellectual Property Organization (WIPO) | B1 | |
| WO0133746A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO0133897A9 | World Intellectual Property Organization (WIPO) | A9 | |
| EP1226738A2 | European Patent Office (EPO) | A2 | |
| EP1228588A2 | European Patent Office (EPO) | A2 | |
| EP1228592A2 | European Patent Office (EPO) | A2 | |
| EP1228660A1 | European Patent Office (EPO) | A1 | |
| EP1228661A2 | European Patent Office (EPO) | A2 | |
| EP1228662A2 | European Patent Office (EPO) | A2 | |
| US6571030B1 | United States of America | B1 | |
| US6597826B1 | United States of America | B1 | |
| US6650803B1 | United States of America | B1 | |
| US2004037553A1 | United States of America | A1 | |
| US2004076365A1 | United States of America | A1 | |
| US6792174B1 | United States of America | B1 | |
| US6813407B2 | United States of America | B2 | |
| US2004258408A1 | United States of America | A1 | |
| US6882765B1 | United States of America | B1 | |
| US6944364B2 | United States of America | B2 | |
| US6947623B2 | United States of America | B2 |
12 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)DPE2 | DPE2 | WO | |
| Wipo information: withdrawn in national officeWithdrawnWWW | WWW | WO | |
| Procedure relating to pct application: ceased to have effect for deCeased8642 | 8642 | DE | |
| Wipo information: published in national officeWWP | WWP | WO | |
| Wipo information: entry into national phaseWWE | WWE | WO | |
| Wipo information: entry into national phaseWWE | WWE | WO | |
| Designated statesAK | AK | WO | |
| Designated countries for regional patentsAL | AL | WO | |
| Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)DFPE | DFPE | WO | |
| Ep: the epo has been informed by wipo that ep was designated in this application121 | 121 | WO | |
| Designated statesAK | AK | WO | |
| Designated countries for regional patentsAL | AL | WO |
Numbers
- Publication
- 01/39413
- Publication, DOCDB
- 0139413
- Publication, EPODOC
- WO0139413
- Application
- 41874
- Application, DOCDB
- 0041874
- Application, EPODOC
- WO2000US41874
Titles2
- English
- 1+1 FAULT PROTECTION IN A NETWORK OF OPTICAL CROSS-CONNECT SWITCHING SYSTEMS
- French
- PROTECTION 1+1 DANS UN RESEAU DE SYSTEMES DE COMMUTATION A REPARTITEUR OPTIQUE
Classification
- CPC, 10
- H04Q11/0062
- G02B6/43
- H04Q2011/0024
- H04Q2011/0026
- H04Q2011/0041
- H04Q2011/0043
- H04Q2011/005
- H04Q2011/0073
- H04Q2011/0081
- H04Q2011/0083
- IPC, 2
- G02B6 43
- H04Q11 00
Designated states4
- Regional, 4
- Zimbabwe
- Turkmenistan
- Türkiye
- Togo