Reliable traffic control and resource provisioning in multi-granular integrated services optical network.

摘要

All-optical networks have been increasingly deployed for high speed core networks, with physical lightpath topology overlaid by logical labeled path topology in the IP/MPLS (MultiProtocol Label Switching) layer to support applications with various data traffic transport requirements. As emerging applications demand more diverse bandwidth granularity and QoS support, it would be desirable to have a multi-service optical network architecture that can provide heterogeneous network services to efficiently transport Internet, telecommunication or scientific application traffic.;This dissertation studies the problem of designing an optical network framework that enables reliable service provisioning to efficiently support mixed elastic and inelastic traffic with heterogeneous bandwidth and QoS specifications. The proposed Multi-granular Integrated Service Optical Network (MG-ISON) enables multi-granular network services through service specific edge controls and a unified core control in all-optical network. Application QoS, especially bandwidth and reliability requirements, is guaranteed through proposed reliability-aware routing over multi-layer optical network.;Two MG-ISON control planes are proposed over fast optical circuit switched network and time-domain wavelength interleaved network. They share common edge traffic control functions such as burst aggregation, stream shaping and inverse multiplexing, while have their specific control functions due to different physical constraints.;To investigate cost of providing multi-granular services over different optical network architectures, simulation experiments are conducted to compare four network architectures regarding transceiver, wavelength, and OXC port costs. The simulation results provide a quantitative way to compare the advantages and disadvantages of different network architectures and provide a reference model for network planning.;Furthermore, reliable label switched path provisioning is proposed to provide end-to-end reliability QoS guarantee for user applications over multi-domain IP over WDM networks. Based on proposed virtual multi-domain multi-layer reliability-aware topology, reliability-aware multi-domain labeled-path routing can be devised to minimize connection request blocking while satisfying end-to-end reliability and bandwidth requirements.