Spectrum allocation method for cognitive satellite network based on service priorities

• Published in: Tongxin xuebao
• Main Authors: Min JIA, Xiaoye JING, Xiaofeng LIU, Feng LIU, Qing GUO, Xuemai GU
• Format: Article
• Language: Chinese
• Published: Editorial Department of Journal on Communications 2019-04-01
• Subjects: integrated satellite and terrestrial networks; spectrum allocation; priority; cognitive radio
• Online Access: http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019080/
• ISSN: 1000-436X

By using spectrum allocation technology of cognitive radio into integrated satellite and terrestrial networks,the satellite communication network can share spectrum with the terrestrial network and improve utilization efficiency of frequency spectrum in the satellite communication system.Firstly,a spectrum resource sharing model in integrated satellite and terrestrial networks was introduced,and the scenery that cognitive satellite downlinks use the vacant spectrum of terrestrial network was analyzed.Then,the interference and signal model was analyzed.Finally,considering different priority types of satellite terrestrial terminals,a spectrum allocation scheme based on priority was proposed,which could ensure the total throughput in satellite downlink communication and increase the throughput of high-priority terrestrial terminals.