根据光突发交换(OBS)网络核心节点的结构和功能特点,分析了OBS网络核心节点的数据信道调度算法,提出了一种新的基于标记可抢占调度算法(LPSA),并讨论和分析了算法的实现过程。本文算法根据到达核心节点的控制包所属业务等级的突发数据(OB)包占用的网络带宽决定数据信道调度的方法,实现了合理的使用数据信道和各业务类别间的业务区分,最终达到改善OBS网络性能的目的。 According to the structure and function features of OBS core nodes, the data channel scheduling algorithm of OBS network core nodes is analyzed and a new label preemptive scheduling algorithm (LPSA) is proposed. The discussion and analysis of Algorithm implementation process. The algorithm of this paper determines the data channel scheduling according to the network bandwidth occupied by the bursty data (OB) packets of the service level to which the control packet belongs to the control node of the core node to achieve reasonable use of data channels and service differentiation among service classes, and ultimately achieve improvement The purpose of OBS network performance.