一种用于解决OBS网中资源竞争的新机制

A novel scheme for contention resolution in OBS networks

综合考虑多种因素,对突发的偏置时间进行改进,提出了一种新的解决资源竞争并能提供服务质量(QoS)保证的机制。结合3种信道调度算法(LRU、FF和PS),对该机制进行了仿真,并与PPJET机制进行了对比,结果表明,在突发丢失方面该机制的性能明显优于后者。

On the basis of comprehensive considerations of multiple factors and improvement of burst offset time, we propose a novel contention resolution and QoS provisioning scheme in optical burst switching （OBS） networks. By using three channel scheduling algorithms, namely Least Recently Used （LRU）, First Fit （FF） and Priority Set （PS）, we simulate and compare the proposed scheme with the preemptive prioritized ）ust enough time （PPJET） contention resolution scheme. It is found that our scheme obviously outperforms the latter in burst loss.