Research On Resource Scheduling And Coordination Mechanism In Intelligent Optical Network

The introduction of the generalized multi-protocol label switching (GMPLS) based control plane makes it possible to realize a series of intelligent functions such as rapid service provisioning, efficient resource allocation, fast protection and restoration, and dynamic bandwidth adjustment, whose characteristics can be summarized as service-oriented and user-oriented. However, due to the problems in current concurrent request conflict, extension of signaling, the implementation of control plane is still facing some technical challenges, in terms of survivability, scalability and centralization. The research presented in this dissertation focuses mainly on two topics as follows:enhanced solutions for the resource conflict and extension to signaling. The mechanisms and algorithms presented in this dissertation have been emulated in the GMPLS experimental platform developed by us. The experiment platform is used to do research of control plane technologies.Firstly, this paper researches on distributed resource collision solution algorithm in GMPLS. After introducing traditional mechanism, two improved resource collision avoidance algorithms are given. Besides, the performance of different algorithms is simulated based on distributed signaling protocol (RSVP-TE).Secondly, this paper focuses on distributed resource collision avoidance algorithm in GMPLS. A scheme based on converter detection and single node notification mechanisms are proposed to avoid the collision. These schemes can both promote the performance of the network.Finally, ASON test-bed is described. This test-bed is based on GMPLS and the author's work in the test-bed is introduced.