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Backup path reprovisioning and activation planning with differentiated dual-failure restorability in WDM mesh networks

Bereitstellung von Back-up-Pfaden und deren Aktivierung mit differenzierter Zwei-Fehler-Wiederherstellung in WDM-Maschennetzwerken
 
: Ni, W.; Schlosser, M.; Zhang, H.

Schäffer, C. ; Informationstechnische Gesellschaft -ITG-, Fachausschuß 5.3 Optische Nachrichtentechnik; Informationstechnische Gesellschaft -ITG-, Fachgruppe 5.3.3 Photonische Netze:
Photonische Netze : Vorträge der 10. ITG-Fachtagung vom 4. bis 5. Mai 2009 in Leipzig
Berlin: VDE-Verlag, 2009 (ITG-Fachbericht 214)
ISBN: 978-3-8007-3161-9
S.59-63
Fachtagung Photonische Netze <10, 2009, Leipzig>
Englisch
Konferenzbeitrag
Fraunhofer HHI ()
ganzzahlige lineare Programmierung; mathematisches Modell; Maschennetz

Abstract
A general integer linear programming (ILP) model, which covers all possible second-failure flow recovery cases, is proposed in this paper to capture the structure of the global backup path reprovisioning scheme triggered after the first-failure flow recovery. Backup capacity contention in face of a new failure is resolved by incorporating a priority activation planning process into the model to achieve differentiated dual-failure restorability for two classes of flows. Numerical results show that without increasing the overall network-wide dual-failure non-restorability, the average network-wide dual-failure non-restorability of high class flows is relatively lower than that of low class flows by over 69% with the proposed differentiated backup path reprovisioning and activation planning (RAP) scheme.

: http://publica.fraunhofer.de/dokumente/N-134076.html