天基数据传输网络的多用户动态带宽分配技术

Multi-Users Dynamic Bandwidth Allocation Technology of SDTN

航天器的测控、数据传输分为天基和地基两种方式,其中天基的测控、数据传输因具有全球覆盖、随遇接入、实时信息回传等优势,具有很广泛的应用前景,同时对其多航天器的动态带宽分配提出了一定要求。在研究中高轨测控、数据传输星座网络架构和多址接入协议的基础上,提出面向数据传输任务的星上多波束、多航天器用户、多任务优先级的动态带宽分配算法,能很好地应用于中高轨星座按需、实时对多个用户的数据传输请求进行资源分配,并可作为天基测控、数据传输接入网络的基础模型。

The TT&C and data transmission of spacecraft are divided into two methods:space-based and ground-based.Among them,space-based method has the advantages of global coverage,access at any time,and real-time information return,and have a wide range of application prospects.But it also puts forward certain requirements for the dynamic bandwidth allocation of its multi-spacecraft.Based on the studied of medium-orbit TT&C,data transmission constellation network architecture and multiple access protocols,a dynamic bandwidth allocation algorithm for on-doard multi-beam,multi-spacecraft users,and multi-task priorities for data transmission tasks was proposed.It was very suitable for the on-demand and real-time resource allocation of data transmission requests of multiple spacecraft in the mid-orbit constellation,and could be used as a multiple access protocol model for space-based measurement and control and data transmission access networks.