A Nation-Wide Photonic Network Architecture with Dynamic Bandwidth Allocation for Packet-Based Next Generation Networks

Luis Romeu NUNES  David SANTOSO  Shinji SUGAWARA  Naoto KISHI  Tetsuya MIKI  

IEICE TRANSACTIONS on Communications   Vol.E86-B   No.3   pp.1031-1039
Publication Date: 2003/03/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Fiber-Optic Transmission
photonic network,  optical packet,  OTDM,  WDM,  dynamic bandwidth allocation,  

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A simple nation-wide core network architecture based on the optimized combination of WDM and OTDM technologies in a two-tier structure network is proposed. The dynamic timeslot allocation in a fixed length frame structure associated with the wavelength routing scheme creates a virtual path with variable bandwidth for edge-to-edge transport of any type of packet protocol without O-E-O conversion. The simulation results show that dynamic timeslot assignment with bandwidth reservation is the best alternative for the network bandwidth utilization efficiency. The influence of the delay caused by the physical size of the network during the request-acknowledgement process is also discussed.