IMT系统对1 518～1 525 MHz频段卫星移动系统的干扰

doi:10.11959/j.issn.1000-0801.2016046

Abstract

Abstract:

In order to analyze the feasibility of deploying mobile satellite system below 1 518～1 525 MHz band，the interference from the IMT system in 1 492～1 518 MHz band to the mobile satellite system in 1 518～1 525 MHz band was studied in detail via theoretical analysis and simulations based on the combing of the ITU recommendations and radio regulation.Aiming at the interference link from IMT base station to the terminal of mobile satellite system in different scenarios，the Monte Carlo simulation method was used to calculate the blocking and the adjacent channel interference.The interference blocking probability and the coexisting conditions between the two systems in adjacent band were given in the simulation results.The conclusion can be used to support the planning of adjacent band by national radio management department.

Key words: mobile satellite system, IMT system, interference analysis, spectrum management

Rui HAN,Xiaoyan ZHANG,Chang LIU,Guan WANG. Interference from IMT system to mobile satellite system in 1 518～1 525 MHz band[J]. Telecommunications Science, 2016, 32(3): 99-104.

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References 12

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一区	二区	三区
1 492～1 518 MHz	1 492～1 518 MHz	1 492～1 518 MHz
固定	固定	固定
移动，航空移动除外	移动	移动
1 518～1 525 MHz	1 518～1 525 MHz	1 518～1 525 MHz
固定	固定	固定
移动，航空移动除外	移动	移动
卫星移动（空对地）	卫星移动（空对地）	卫星移动（空对地）

中国大陆	香港	澳门
1 492～1 518 MHz	1 492～1 518 MHz	1 492～1 518 MHz
固定		固定
移动		移动
[无线电定位]
1 518～1 525 MHz	1 518～1 525 MHz	1 518～1 525 MHz
固定	固定	固定
移动	卫星移动（空对地）	移动
[无线电定位]		[卫星移动（空对地）]
卫星移动（空对地）

IMT系统		卫星移动系统
仿真参数	设置值	仿真参数	设置值
工作带宽/MHz	20	卫星移动系统工作频率/MHz	1 518～1 525
宏基站数量	19小区，每小区3扇区	卫星移动系统带宽/MHz	7
仿真场景	城市/郊区/农村	卫星移动手持终端天线高度/m	1.5
宏基站站间距/m	500/1 000/5 000	卫星移动手持终端天线增益/dB	0
宏基站最大发射功率/dBm	43/46/46	卫星移动手持终端与宏基站之间最小距离/m	35
宏基站天线增益/dBi	16/16/18
宏基站天线高度/m	25/30/30
最小耦合损耗/dB	70

特性	典型值	备注
IMT基站发射功率	-27	46 dBm/20 MHz换算结果
MCL/dB	70	3GPP TR 36.942中的典型值
阻塞电平	-97	根据式（1）计算结果

频率间隔/MHz	0	5	10	15
ACIR/dB	38.8	42.8	50.5	50.5

Interference from IMT system to mobile satellite system in 1 518～1 525 MHz band

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