光突发交换网络的一种新型资源预留协议

A novel resource reservation protocol for optical burst switching networks

考虑到现有光突发交换(OBS)网络协议在时延、丢包率性能上的不足,在恰量时间(JET)协议的基础上,提出了一种基于并行调度(PS)处理思想的新型资源预留协议——PS-JET 协议,给出了该协议的实现方案及具体的信令帧格式,并通过分析与系统仿真,将其性能同带优先级的恰量时间(PJET)资源预留协议做了详细的比较。结果表明,PS-JET协议在实际的多跳网络中具有更好的时延性能和更低的丢包率,同时,具有和 PJET 同样良好的 QoS 区分特性。

In view of the present optical burst switching （OBS） protocols＇ problems of time delay and drapping probability, the paper proposes the PS-JET protocol, a novel resource reservation scheme based on the just-enough-time （JET） protocol and the parallel scheduling （PS） concept, and gives its signaling frame and implementation. The protocol＇s performance were compared with the priority just-enough-time （PJET） protocol by simulation experiments, and the results show that PS-JET not only outperforms PJET in terms of end-to-end delay and dropping probability but also can provide a basic QoS guarantee like PJET.