An efficient data channel rescheduling algorithm based on virtual burst for OBS networks

A new reschedling algorithm,namely wavelength channel re-allocation based on virtual burst(WCRA-VB) algorithm was proposed.It can overcome the problems due to the different arrival sequence between the data bursts(DB) and control packets(BHP),and can increase the flexibility of rescheduling data blocks markedly.The simulation results show that it has improved the overall packet loss probability and the link utilization in traditional OBS rescheduling algorithm whose rescheduling granularity is normal burst and the initial virtual burst scheduling scheme.Moreover this scheme can increase network flexibility.