中国空间科学技术 ›› 2020, Vol. 40 ›› Issue (5): 99-110.doi: 10.16708/j.cnki.1000-758X.2020.0063

• 技术交流 • 上一篇    下一篇

一种卫星信道的反馈优化接入机制

丁毅,曹昕宇,程子敬,李洁,钟琼慧,靳军   

  1. 1.北京物资学院 信息学院,北京101149
    2.航天恒星科技有限公司,北京100094
  • 出版日期:2020-10-25 发布日期:2020-09-30
  • 基金资助:
    国家重点研发计划(2018YFB1402703);国家自然科学基金(91538202);北京市教育委员会科技计划一般项目(KM201910037003);北京市社会科学基金研究基地项目(18JDGLB026);北京物资学院青年基金(2018XJQN06);智能物流系统北京重点实验室(BZ0211)

A feedback optimization access mechanism for satellite channel

  1. 1.School of Information,Beijing Wuzi University, Beijing 101149, China
    2.Space Star technology Co., Ltd., Beijing 100094, China
  • Online:2020-10-25 Published:2020-09-30

摘要: 提高卫星信道资源利用率,探索高效可行的端站接入机制是卫星通信发展亟待解决的问题之一。当前卫星通信DVB-RCS标准基于带宽预先规划的接入机制与端站随遇接入的需求矛盾凸显,因此提出一套信道反馈优化接入机制,综合考虑各端站数据业务需求,在不改变原有协议信令特征的基础上,探索性地引入谦虚度激励方法,创造性地构造动态协商反馈模型并加以求解,达到提高端站接入数量、满足随遇接入需求、提升信道利用效率、最大化整体带宽通信业务效益的目的。通过试验验证,带宽分配反馈优化机制比传统模式提高近1倍接入率,最大端站数接入时算法耗时约只有0.67s,可为卫星信道使用提供技术参考。

关键词: 资源分配, 反馈优化, 卫星信道, 协商机制, 服务等级

Abstract: It is urgent to improve the utilization rate of satellite channel resources and explore both efficient and feasible satellite interactive terminal access mechanism in the development of satellite communication. The disparity between the requirements for free access of satellite interactive terminal as they come and the access mechanism based on bandwidth preplanning in the current satellite communications with DVBRCS standard is emerging. Therefore, a channel feedback optimization access mechanism is proposed. The mechanism based on the signaling features of original protocol comprehensively considered the data service requirements for each satellite interactive terminal, exploratively introduced a modest incentive method and creatively constructed a dynamic negotiation feedback model to increase the access number of satellite interactive terminals and satisfy the requirements of satellite terminal ondemand access as they come. It enhanced the channel utilization efficiency, and maximized the service benefits of overall bandwidth communication as well. The experiments have proved that the bandwidth allocation feedback optimization mechanism improved the access rate by nearly one time compared with the traditional model and the algorithm took only about 0.67s with maximum number of terminal access, which could be a technical reference for the current use of satellite channels.

Key words: resource allocation, feedback optimization, satellite channel, negotiation mechanism, service level