Study On Resource Reservation And Collision Solutions In Optical Burst Switching Network

Optical Burst Switching (OBS) is a promising solution for supporting high-speed bursty data traffic over WDM network. In OBS networks, the control plane, working in the electrical domain, is separated from the optical transport plane in wavelength used, and the end-to-end all-optical data transportation is realized by using such techniques as traffic convergence, data burst assembly, one-way resource reservation and etc. In the research of OBS, how to avoid or reduce the data loss caused by random burst collision is one of crucial problems. This thesis makes some contributions in resource reservation and collision solutions. First, a new scheme of resource reservation is realized by simulation, and a Persistence Resource Reservation scheme supporting QoS is proposed on its base. Then, FDL optical buffer is analyzed by theory and simulation, and a buffer scheduling algorithm is designed and realized, the simulation results shows its validity to improve the higher class's service performance. At last, a modified analytical model of optical composite burst switching (OCBS) is proposed, whose accuracy has been verified by simulation.