24.65～25.25 GHz频段IMT-2020（5G）系统对卫星广播系统干扰分析

doi:10.11959/j.issn.1000-0801.2018137

摘要/Abstract

摘要：

基于WRC-19 1.13议题研究框架和国内6 GHz以上IMT-2020（5G）候选频段的兼容性分析要求，针对24.65～25.25 GHz频段IMT-2020（5G）系统对卫星广播系统的干扰进行研究。采用蒙特卡洛的仿真方法，比较了静止轨道卫星经度分别在东经59°、85°、113°时，IMT-2020（5G）系统基站对卫星广播系统上行馈线链路的集总干扰情况。通过仿真分析，评估了5G系统对不同轨位卫星两类载波的集总干扰水平。研究结果表明，在该频段，IMT-2020（5G）系统不会对卫星广播系统产生有害干扰，相关研究结果可为未来毫米波频段IMT-2020（5G）系统频率规划以及保护卫星广播系统提供技术依据。

关键词: 通信技术, IMT-2020（5G）系统, 干扰分析, 卫星广播系统

Abstract:

Based on the Agenda Item 1.13 of WRC-19 and requirements for domestic compatibility analysis of 5G candidate frequency bands above 6 GHz,the interference from IMT-2020 system (5G) to broadcasting satellite service system in 24.65～25.25 GHz band was studied.The Monte Carlo simulation method was used to assess the aggregate interference from IMT base station (BS) to the up-link of feeder link of broadcasting satellite where the geostationary orbit satellite at 59℃,85℃ and 113℃ longitude.The aggregate interference level from 5G system to the two kinds of carriers of the satellite system with different orbits was evaluated via simulation analysis.Research results show that the IMT-2020 (5G) system will not cause harmful interference for broadcasting satellite services system.The results can provide technology basis for future planning of IMT-2020 (5G) system in millimeter wave and protecting of broadcasting satellite system.

Key words: communication technology, IMT-2020(5G) system, interference analysis, broadcasting satellite service system

韩锐,张磊,李伟,刘珊杉,王冠,刘春花. 24.65～25.25 GHz频段IMT-2020（5G）系统对卫星广播系统干扰分析[J]. 电信科学, 2018, 34(7): 102-109.

Rui HAN,Lei ZHANG,Wei LI,Shanshan LIU,Guan WANG,Chunhua LIU. Interference analysis between IMT-2020 (5G) system and broadcasting satellite service system in the band of 24.65～25.25 GHz[J]. Telecommunications Science, 2018, 34(7): 102-109.

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参考文献 12

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	参数	数值
5G系统参数	频率/GHz	28
	工作带宽/MHz	200
	调度用户数K	3
	天线高度/m	6（高于地面）
	扇区	单扇区
	下倾角	10°
	网络负载因子	20%
	基站TDD激活因子	100%
	阴影衰落标准差/dB	4
	阴影衰落相关因子	0.5
	MCL	50
	基站最大发射功率/(dBm·200 MHz^–1)	28
	城区因子Ra	7%
	热点因子Rb	5%
	天线模式	建议书ITU-R M.2101
	阵元增益/dBi	5
	单阵元水平/垂直3 dB 波束宽度	65o
	水平/垂直主后瓣比/dB	30
	天线阵列配置（行×列）	8×8阵元
	水平/垂直辐射阵元间隔	0.5 倍波长
	阵列欧姆损耗/dB	3
	单阵元的传导功率/(dBm·200 MHz^–1)	10
	基站在水平面上的最大覆盖角度	120°
卫星广播系统参数	上行工作带宽/MHz	30
	卫星经度	59° E/85° E/113° E
	卫星接收机噪声温度/K	900/760
	卫星接收增益/dBi	51/46
	路径损耗	自由空间
	地物损耗（clutter loss）	与仰角、p有关
	大气损耗	0

卫星经度	59° E	85° E	113° E
单位面积干扰/（dBW·30 MHz^–1	-184.2	-186.8	-191.3
集总干扰/（dBW·30 MHz^–1）	-138.9	-141.6	-146.1
I/N/dB	-14.7	-17.3	-21.8

卫星经度	59° E	85° E	113° E
单位面积干扰/（dBW·30 MHz^–1）	-189.0	-191.8	-196.5
集总干扰/（dBW·30 MHz^–1）	-143.7	-146.6	-151.2
I/N/dB	-18.7	-21.3	-26.2