国际海事卫星移动通信系统与下一代IMT系统在扩展C频段的共存

doi:10.11959/j.issn.1000-0801.2016087

Abstract

Abstract:

According to the “Table of Frequency Allocations of People’s Republic of China”and the relevant provisions of the“Radio Regulations”，it is shown that there are frequency overlap between the space to ground（down） link of the fourth-generation international maritime satellite（INMARSAT）mobile communication system and the next generation international mobile telecommunication（IMT）system in China. In order to guarantee the coexistence of the fourth-generation INMARSAT mobile communication system and the next generation of IMT system，the operation prerequisites or protection distances were analyzed. Based on the theoretical analysis，the simulation and survey of production level of equipment company，some suggestions on how to make the above two systems coexist were presented.

Key words: the fourth-generation international maritime satellite mobile communication system, IMT system, frequency sharing, coexistence, protection distance

Xiaoyan ZHANG,Xiaqing YANG,Rui HAN. Frequency sharing of the international maritime satellite mobile communication system and the next generation IMT system[J]. Telecommunications Science, 2016, 32(4): 76-82.

Figures/Tables 11

References 7

[1]	中华人民共和国工业与信息化部. 中华人民共和国无线电频率划分规定[S/OL].[2014-01-29]. .Ministry of Industry and Information Technology. People’s Republic of China Radio Frequency Allocation Provisions[S/OL]. [2014-01-29]. .
[2]	User equipment（UE）radio transmission and reception：3GPP TS36.101：2012[S/OL].[2012-09-01]. .
[3]	Base station （BS）radio transmission and reception：3GPP TS36.104：2013[S/OL]. [2013-09-01]. .
[4]	Radio frequency （RF）system scenarios：TS36.942：2010[S/OL]. [2010-12-01]. .
[5]	Apportionment of the allowable error performance degradations to fixed-satellite service（FSS）hypothetical reference digital paths arising from time invariant interference for systems operating below 30 GHz：ITU-R S.1432-1：2006[S/OL].[2006-01-01]. .
[6]	李景春，黄标，黄嘉，等. 电磁频谱工程[M]. 北京：人民邮电出版社， 2008. LI J C ， HUANG B ， HUANG J ， et al. Electromagnetic spectrum engineering[M]. Beijing： Posts and Telecom Press， 2008.
[7]	Radiation diagrams for use as design objectives for antennas of earth stations operating with geostationary satellites：ITU-R S. 580-6：2004[S/OL].[2004-01-01]. .

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参数	指标
卫星输出功率/dBW	0
卫星发射波束CRD的天线增益/dBi	22
海事卫星和关口站间的自由空间损耗/dB	195.26
关口站接收系统的等效噪声温度T/K	72
关口站接收天线的最大增益Grmax/dBi	54.03
到达关口站接收天线面的最小可识辨功率谱密度PFD	-174 dBW/（m²·Hz^-1）（由生产厂商提供）
干扰保护准则I/N/dB	-10^[5]
接收频率/MHz	3 550～3 700
信号带宽/kHz	189和42
接收天线距地面高度/m	15.9
天线尺寸/m	16
天线仰角	33.2°～38.2°
接收天线方位角θ	139.6°～143°
极化方式	圆极化
关口站的信噪比/dB	9.03
关口站干扰保护门限	-130
（由式（1）得）/（dBm·MHz^-1）
关口站干扰保护门限	-106.6
（由式（2）得）/（dBm·MHz^-1）

参数	基站指标
输出功率/dBm	46
信号带宽/MHz	20
发射天线高度/m	30
天线增益（含线缆损耗等）/dBi	15
邻道泄漏/dBc	45
频率/MHz	3 550～3 700

BS发射功率/（dBm·MHz^-1）	BS泄漏功率/（dBm·MHz^-1）	BS发射增益/dBi	关口站接收增益/dBi	干扰保护门限/（dBm·MHz^-1）	所需的最小损耗/dB	隔离范围/km
33	33	15	式（4）	-130	178+式（4）	13～87
				-106.6	154.6+式（4）	6～71

频率隔离/MHz	ACLR/dB	基站EIRP	基站泄漏功率/（dBm·MHz^-1）	干扰保护门限/（dBm·MHz^-1）	所需的最小损耗/dB	隔离范围/km
0	45	48	-12	-130	133+式（4）	1～16
				-106.6	109.6+式（4）	0.7～15

频率隔离/MHz	无用发射功率/（dBm·MHz^-1）	干扰保护门限/（dBm·MHz^-1）	所需的最小损耗/dB	隔离范围/km
5	-65	-130	80+式（4）	0.5～2.5
		-106.6	56.6+式（4）	0～2
10	-86	-130	59+式（4）	0～2
		-106.6	35.6+式（4）	可以共存

Frequency sharing of the international maritime satellite mobile communication system and the next generation IMT system

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