摘要
Satellite-Terrestrial integrated Networks(STNs)have been advocated by both academia and industry as a promising network paradigm to achieve service continuity and ubiquity.However,STNs suffer from problems including poor flexibility of network architecture,low adaptability to dynamic environments,the lack of network intelligence,and low resource utilization.To handle these challenges,a Software defined Intelligent STN(SISTN)architecture is introduced.Specifically,the hierarchical architecture of the proposal is described and a distributed deployment scheme for SISTNs controllers is proposed to realize agile and effective network management and control.Moreover,three use cases in SISTNs are discussed.Meanwhile,key techniques and their corresponding solutions are presented,followed by the identification of several open issues in SISTNs including compatibility with existing networks,the tradeoff between network flexibility and performance,and so on.
基金
This work was supported in part by the National Key Research and Development Program of China under Grant 2020YFB1806703
in part by the National Natural Science Foundation of China under Grant 62001053,Grant 61831002,and Grant 61925101
in part by Young Elite Scientist Sponsorship Program by China Institute of Communications,and in part by the BUPT Excellent Ph.D.Students Foundation under Grant CX2020106.
作者简介
Shuo Yuan,E-mail addresses:yuanshuo@bupt.edu.cn;Mugen Peng,pmg@bupt.edu.cn;Corresponding author:Yaohua Sun,sunyaohua@bupt.edu.cn;Xiqing Liu,liuxiqing@bupt.edu.cn。
