面向差异化QoS保障的卫星返向链路资源分配策略Resource Allocation Strategy for Satellite Return link to Provide Differentiated QoS Support
缪中宇,陈特,冯瑄,郑寒雨,秦鹏飞,蒲明龙,陶滢
摘要(Abstract):
面向采用多频时分多址接入(MF-TDMA)体制的宽带卫星返向链路,提出了一种符合第2代数字视频广播-交互式卫星系统(DVB-RCS2)标准的差异化服务质量(QoS)资源分配策略,能够从用户优先级与业务类型区分QoS级别,为系统中的用户提供6类不同的QoS保障。基于资源分配策略设计了一种面向差异化QoS保障的返向链路资源分配算法,保障重点用户接入,并在系统资源不足时通过服务降级显著提升用户服务率。仿真结果验证了所提策略在用户与业务维度均能提供差异化的服务质量,可用于宽带卫星通信系统。
关键词(KeyWords): 卫星资源分配;返向链路;差异化服务质量;优先级
基金项目(Foundation): 国家重点研发计划项目(2019YFB1803100)
作者(Author): 缪中宇,陈特,冯瑄,郑寒雨,秦鹏飞,蒲明龙,陶滢
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