本文在对综合业务卫星广播网所承载业务进行了分类并分析了各类业务QoS 需求的基础上，提出了一种基于优先级和自适应最小回转周期轮转调度的适合于综合业务卫星广播网的带宽分配策略。仿真结果表明，该带宽分配策略能够满足综合业务卫星广播网各类业务的QoS 需求。关键词：卫星广播网络；带宽分配；服务质量Abstract：In this paper, we propose a bandwidth allocation scheme that is applicable to theintegrated service satellite broadcast network. Based on the study of service categorization and their QoS requirement, the scheme is a new hybrid one which combines priority queuing and adaptive minimized cycle round robin. Simulation results show that the proposed scheme can meet the QoS requirement of services in the integrated service satellite broadcast network.Key words：satellite broadcast network; bandwidth allocation; QoS