分组调度方面：提出了一种新的多级缓存并行分组交换结构和一种分布式变长分组调度算法（DVLPS）。
On packet scheduling: A novel multi-stage buffering PPS and the Distributed Variable-Length Packet Scheduling (DVLPS) algorithm are present.
并行分组交换机(PPS)是一种利用多个低速交换结构实现高速交换的新技术，它是当前高速交换领域的一个研究热点。
Parallel Packet switch (PPS) can realize high speed switching by using low speed switches, which is a hot spot in switching area.
本文讨论了光分组交换网络中的多种组播机制，包括并行模式，串行模式及混合模式全光组播机制。
Different multicasting schemes in optical packet switched networks are discussed, including the parallel mode, serial mode, and hybrid mode multicasting schemes.
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