700 MHz频段在5G网络优化中的应用研究

doi:10.11959/j.issn.1000-0801.2022083

摘要/Abstract

摘要：

700 MHz频段具有频率低、绕射能力强、覆盖效果好等优点，中国移动与中国广电已明确将基于700 MHz频段资源开展5G网络共建共享。首先从理论上分析了700 MHz频段的覆盖优势，然后通过700 MHz 5G站点的连片道路覆盖测试、居民楼覆盖性能测试以及定点容量性能测试等试点，为后续700 MHz 5G网络建设及优化提供了数据支撑。可以从主动规避700 MHz广电频率干扰、充分发挥高低频组网方案优势、积极探索多频段协同优化策略等方面，最大程度地释放700 MHz黄金频谱的价值，持续提升5G无线网络质量。

关键词: 700MHz频段, 5G网络, 无线干扰, 高低频组网, 协同优化

Abstract:

The 700 MHz frequency band has the advantages of low frequency, strong diffraction ability, and good coverage effect.China Mobile and China Radio and Television had made it clear that they would jointly build and share 5G networks based on 700 MHz frequency band resources.Firstly, the coverage advantages of 700 MHz frequency band were analyzed theoretically, and then the pilot projects such as 700 MHz 5G station continuous road coverage test, residential building coverage performance test and fixed-point capacity performance test provided data support for the subsequent 700 MHz 5G network construction and optimization.It could release the value of 700 MHz gold spectrum to the greatest extent and continuously improve the quality of 5G wireless network from the aspects of actively avoiding 700 MHz radio and television frequency interference, giving full play to the advantages of high and low frequency networking schemes, and actively exploring multi band collaborative optimization strategies.

Key words: 700 MHz frequency band, 5G network, wireless interference, high and low frequency networking, collaborative optimization

中图分类号:

TN929.5

张叶江, 孙磊, 尹以雁, 杨晓康, 胡坚. 700 MHz频段在5G网络优化中的应用研究[J]. 电信科学, 2022, 38(6): 156-163.

Yejiang ZHANG, Lei SUN, Yiyan YIN, Xiaokang YANG, Jian HU. Research on the application of 700 MHz frequency band in 5G network optimization[J]. Telecommunications Science, 2022, 38(6): 156-163.

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运营商	上行/MHz	下行/MHz	带宽/MHz	5G频段号	双工制式	备注
中国移动	2 515~2 675	2 515～2 675	160	N41	TDD	与4G共享
	4 800～4 900	4 800～4 900	100	N79	TDD
中国电信	3 400～3 500	3 400～3 500	100	N78	TDD	中国电信与中国联通共建共享
中国联通	3 500～3 600	3 500～3 600	100	N78	TDD
中国广电	703～748	758～803	45	N28	FDD	与中国移动共建共享
	4 900～4 960	4 900～4 960	60	N79	TDD
中国电信/中国联通/中国广电	3 300～3 400	3 300～3 400	100	N78	TDD	3家运营商室内共享

基站名	小区号	频带	带宽/MHz	方位角	站高/m	机械倾角	电下倾
渔米之乡灯杆站2-700 MHz-5HHQ	11/12/13	n28	30	70°/220°/330°	30	5°/5°/5°	0°
渔米之乡灯杆站2-5HHQ	11/12/13	n41	100	60°/130°/240°	30	5°/5°/5°	6°/8°/5°
集成大厦-700 MHz-5HHQ	11/12/13/14	n28	30	30°/110°/200°/300°	47	7°/13°/10°/9°	0°
集成大厦-5HHQ	11/12/13	n41	100	30°/110°/250°	47	6°/6°/6°	12°/12°/12°
工众药房景观塔700 MHz-5HHQ	11/12/13	n28	30	70°/200°/300°	30	3°/3°/3°	0°
工众药房景观塔-5HHQ	11/12/13	n41	100	50°/200°/300°	30	3°/3°/3°	9°/0°/6°
春苑小区水塔-700 MHz-5HHQ	11/12/13	n28	30	110°/240°/350°	36	6°/6°/6°	0°
春苑小区水塔-5HHQ	11/12/13	n41	100	110°/160°/350°	36	6°/7°/6°	9°/6°/6°

频段	综合覆盖率（RSRP≥-93 dBm且SI5G≥-3 dB）	平均RSRP/dBm	平均SI5G/dB	下载速率/(Mbit·s^-1)	上传速率/(Mbit·s^-1)
700 MHz	96.59%	-72.73	7.19	218.94	87.06
2.6 GHz	97.49%	-74.74	14.45	647.30	121.97

楼层	平均RSRP/dBm		平均SI5G/dB		下载速率/(Mbit·s^-1)		上传速率/(Mbit·s^-1)
楼层	700 MHz	2.6 GHz	700 MHz	2.6 GHz	700 MHz	2.6 GHz	700 MHz	2.6 GHz
1楼	-83.35	-101.5	4.13	9.18	191.56	372.45	45.9	10.33
3楼	-80.64	-98.54	2.49	9.55	202.26	490.18	62.85	42.85
6楼	-78.08	-89.72	4.71	8.07	216.3	715.07	64.53	93.55
1楼	-93.03	-112.2	7.39	0.37	66.99	123.03	11.76	5.71
3楼	-90.01	-108.9	6.17	-0.25	71	128.89	20.06	11.84
6楼	-87.64	-106.5	8.2	0.66	74.97	161.51	22.08	17.47
1楼	-98.03	脱网	3.15	脱网	59.56	脱网	3.83	脱网
3楼	-89.54	脱网	2.25	脱网	68.83	脱网	9.4	脱网
6楼	-84.08	脱网	4.85	脱网	101.16	脱网	16.11	脱网

站点	站高/m	方位角	机械倾角	功率/W	带宽/MHz	下载速率/(Mbit·s^-1)	上传速率/(Mbit·s^-1)	测试终端
渔米之乡灯杆站-700 MHz	22	220°	5°	240	30	330	184	Mate40pro
渔米之乡灯杆站-2.6 GHz	20	220°	5°	240	100	1571	227	Mate40pro