Title :
Hierarchical routing in optical networks
Author :
Ehsani, Seyed Reza ; Ghorbani, Valiallah ; Shahkooh, Sadegh Abbasi
Author_Institution :
Opt. Commun. Res. Group, ITRC Iran Telecommun. Res. Center, Tehran
Abstract :
Current optical networks offer high-speed circuits with wavelength division multiplexing (WDM) transmission and wavelength routing. WDM enables a single fiber strand to carry several wavelengths. Each wavelength can carry data at a speed of 10-40 Gigabits per second. By maturing this technology, there is a need to develop more advanced light-path provisioning algorithms for distributed, dynamic multi-domain circuit- switched interconnection at very large speeds. In this paper, a hierarchical routing GMPLS-based framework for provisioning all-optical WDM network is presented. The scheme adapts various topology abstraction schemes to improve routing scalability and lower inter-domain blocking probabilities. Related inter-domain light-path RWA and signaling schemes are also tabled.
Keywords :
multiprotocol label switching; optical fibre networks; probability; telecommunication network routing; telecommunication network topology; telecommunication signalling; wavelength assignment; wavelength division multiplexing; GMPLS; WDM transmission; all-optical WDM network; distributed dynamic multidomain circuit-switched interconnection; generalized multiprotocol label switching; hierarchical optical network routing; light-path provisioning algorithm; light-path routing and wavelength assignment; lower inter-domain blocking probability; signaling scheme; single fiber strand; topology abstraction scheme; wavelength division multiplexing; wavelength routing; Circuit topology; Heuristic algorithms; Integrated circuit interconnections; Network topology; Optical fiber networks; Scalability; Switching circuits; WDM networks; Wavelength division multiplexing; Wavelength routing; Hierarchical Routing; RWA; WDM;
Conference_Titel :
Information and Communication Technologies: From Theory to Applications, 2008. ICTTA 2008. 3rd International Conference on
Conference_Location :
Damascus
Print_ISBN :
978-1-4244-1751-3
Electronic_ISBN :
978-1-4244-1752-0
DOI :
10.1109/ICTTA.2008.4530200
