介绍一种在光突发交换网中支持业务QoS ,并减少分组到达乱序的突发包混合封装机制 通过将不同级别的分组组成相对独立的段 ,并进而封装到同一个突发包里 ,可减少分组到达乱序 结合改进的头部丢弃策略 ,可克服尾部丢弃法中存在的虚假冲突问题 ,能真正改善分组丢弃率 仿真结果表明 ,混合封装在结合改进的头部丢弃法之后 ,能很好地应用于具有QoS要求的光突发交换网中 This paper introduces a burst packet encapsulation mechanism that supports QoS in the optical burst switching network and reduces packet arrival disorder. By combining different levels of packets into relatively independent segments and then encapsulating them in the same burst, Which can reduce packet arrival and out-of-sequence combination. Improved header discarding strategy can overcome the problem of false conflict in tail discarding method and can really improve packet discard rate. Simulation results show that hybrid encapsulation combined with improved header discarding method can Good application to optical burst switching network with QoS requirements