基于业务优先级的认知卫星网络频谱分配方法

doi:10.11959/j.issn.1000-436x.2019080

通信学报 ›› 2019, Vol. 40 ›› Issue (4): 140-148.doi: 10.11959/j.issn.1000-436x.2019080

基于业务优先级的认知卫星网络频谱分配方法

贾敏¹,敬晓晔¹,刘晓锋¹,刘枫²,郭庆¹,顾学迈¹

¹ 哈尔滨工业大学电子与信息工程学院，黑龙江哈尔滨 150001
² 中国空间技术研究院通信卫星事业部，北京 100094

修回日期:2019-02-19 出版日期:2019-04-25 发布日期:2019-05-05
作者简介:贾敏（1982- ），女，黑龙江哈尔滨人，哈尔滨工业大学副教授、博士生导师，主要研究方向为卫星和无线通信、天地一体化。|敬晓晔（1995- ），女，山东德州人，哈尔滨工业大学硕士生，主要研究方向为卫星和无线通信、天地一体化。|刘晓锋（1961- ），男，黑龙江哈尔滨人，哈尔滨工业大学教授、硕士生导师，主要研究方向为卫星无线通信、天地一体化。|刘枫（1979- ），男，河北石家庄人，中国空间技术研究院通信卫星事业部副主任，主要研究方向为通信卫星体制及系统框架。|郭庆（1964- ），男，黑龙江哈尔滨人，哈尔滨工业大学教授、博士生导师，主要研究方向为卫星和无线通信、天地一体化。|顾学迈（1957- ），男，黑龙江哈尔滨人，哈尔滨工业大学教授、博士生导师，主要研究方向为卫星和无线通信、天地一体化。
基金资助:
国家自然科学基金资助项目(61671183);国家自然科学基金资助项目(61771163)

Spectrum allocation method for cognitive satellite network based on service priorities

Min JIA¹,Xiaoye JING¹,Xiaofeng LIU¹,Feng LIU²,Qing GUO¹,Xuemai GU¹

¹ School of Electronics and Information,Harbin Institute of Technology,Harbin 150001,China
² Institute of Telecommunication Satellite,China Academy of Space Technology,Beijing 100094,China

Revised:2019-02-19 Online:2019-04-25 Published:2019-05-05
Supported by:
The National Natural Science Foundation of China(61671183);The National Natural Science Foundation of China(61771163)

摘要/Abstract

摘要：

将认知无线电中的频谱分配技术应用到星地一体化网络中，能够实现卫星与地面通信网络的频谱共享，提高卫星通信系统的频谱利用率。首先，建立一种星地一体化频谱资源共享模型，分析认知卫星下行链路使用地面网络空闲频谱的场景。然后，对干扰模型和信号模型进行推导及分析。最后，考虑卫星地面终端的不同优先级类型，提出一种基于优先级的频谱分配方案，在保证下行卫星通信总吞吐量的同时，增加高优先级地面终端的吞吐量。

关键词: 星地一体化, 频谱分配, 优先级, 认知无线电

Abstract:

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.

Key words: integrated satellite and terrestrial networks, spectrum allocation, priority, cognitive radio

中图分类号:

TN91

贾敏,敬晓晔,刘晓锋,刘枫,郭庆,顾学迈. 基于业务优先级的认知卫星网络频谱分配方法[J]. 通信学报, 2019, 40(4): 140-148.

Min JIA,Xiaoye JING,Xiaofeng LIU,Feng LIU,Qing GUO,Xuemai GU. Spectrum allocation method for cognitive satellite network based on service priorities[J]. Journal on Communications, 2019, 40(4): 140-148.

图/表 6

图1

表1

卫星网络相关参数"

卫星网络参数	数值
下行链路信道带宽/ MHz	66
认知频带/ GHz	17.7～19.7（共30信道）
GEO卫星位置	13oE
全向辐射功率（EIRP）/ dBW	65
$G_{T}^{SAT} (m) / d B i$	49.60～54.63
$I_{down}^{co} / d B i$	-7.37～-14.16
小区复用方式	4色复用
$G_{R}^{FSS} (0) / d B i$	42.1
卫星高度/ km	35 786
$N_{0} / d B W$	-126.46
地面终端高度/m	15

表1

表2

表3

图2

图3

参考文献 26

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FS地面系统参数	数值
天线类型	ITU-F F.1245-2
天线增益/dBi	5.3～41
全向辐射功率（EIRP）/dBW	32.9～54.3
天线高度/m	0～187
带宽/MHz	13.7～55

权重数值	P ₁优先级的地面终端全部分配到信道/次	P ₂优先级的地面终端全部分配到信道/次	P ₃优先级的地面终端分配到信道/次
P₁=0.45,P₂=0.3,P₃=0.25	91	87	15
P ₁=0.5,P₂=0.3,P₃=0.2	95	91	11
P ₁=0.6,P₂=0.3,P₃=0.1	99	98	2

基于业务优先级的认知卫星网络频谱分配方法

Spectrum allocation method for cognitive satellite network based on service priorities

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