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A contention resolution scheme.P-cycle auto-switching(PCAS).is proposed in wavelength-switched optical networks(WSONs) based on generalized multi-protocol label switching(GMPLS) to solve backward blocking.This system permits the preferable request and switches the other to a backup path generated by the P-cycle.Simulation results show that the PCAS scheme is effective in mitigating backward blocking, especially under concentrated load.
A contention resolution scheme. P-cycle auto-switching (PCAS) .is proposed in wavelength-switched optical networks (WSONs) based on generalized multi-protocol label switching (GMPLS) to solve backward. This system permits the preferred request and switches the other to a backup path generated by the P-cycle. Simulation results show that the PCAS scheme is effective in mitigating backward blocking, especially under concentrated load.