Space-Integrated-Ground Information Networks ›› 2022, Vol. 3 ›› Issue (4): 83-91.doi: 10.11959/j.issn.2096-8930.2022046

Special Issue: 面向星地融合的信息传输技术

• Special Issue: Information Transmission Technology for Satellite-Terrestrial Integration • Previous Articles     Next Articles

Multi-Users Dynamic Bandwidth Allocation Technology of SDTN

Jianxiang CHU1, Yin HUANG1, Chong WANG2, Yunze CAO1   

  1. 1 Beijing Remote Sensing Equipment Institute, Beijing 100086, China
    2 Aerospace Science and Industry Space Engineering Development Co., Ltd, Beijing 100086, China
  • Revised:2022-09-26 Online:2022-12-20 Published:2022-12-01

Abstract:

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.

Key words: medium-high orbit constellation, TT&C and data transmission, multiple access, dynamic bandwidth allocation

CLC Number: 

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