电信科学 ›› 2022, Vol. 38 ›› Issue (2): 139-148.doi: 10.11959/j.issn.1000-0801.2022029

• 工程与应用 • 上一篇    下一篇

5G室内外同频组网干扰解决方案

郭希蕊1, 张涛1, 张强2, 王东洋1, 杨艳1   

  1. 1 中国联合网络通信集团有限公司研究院,北京100176
    2 中讯邮电咨询设计院有限公司,北京 100048
  • 修回日期:2022-01-02 出版日期:2022-02-20 发布日期:2022-02-01
  • 作者简介:郭希蕊(1983- ),男,中国联合网络通信集团有限公司研究院高级工程师,主要从事与无线通信研究相关的工作
    张涛(1979- ),男,中国联合网络通信集团有限公司研究院高级工程师,主要从事与无线通信研究相关的工作
    张强(1978- ),男,中讯邮电咨询设计院有限公司高级工程师,主要从事 5G 网络、增值业务网络建设和维护管理工作
    王东洋(1980- ),男,中国联合网络通信集团有限公司研究院高级工程师,主要从事与无线通信研究相关的工作
    杨艳(1984- ),女,博士,中国联合网络通信集团有限公司研究院教授级高级工程师,主要从事与无线通信研究相关的工作

A solution for 5G indoor and outdoor co-frequency network interference

Xirui GUO1, Tao ZHANG1, Qiang ZHANG2, Dongyang WANG1, Yan YANG1   

  1. 1 Research Institute of China United Network Communications Co., Ltd., Beijing 100176, China
    2 China Information Technology Designing &Consulting Institute Co., Ltd., Beijing 100048, China
  • Revised:2022-01-02 Online:2022-02-20 Published:2022-02-01

摘要:

5G室内外采用同频部署会导致网络覆盖性能和用户业务体验下降,分析了室内外同频干扰产生的原因,对业务信道物理资源块(physical resource block,PRB)随机化干扰解决方案、室内外波束协同干扰解决方案、室内多波束干扰解决方案 3 种室内外同频干扰解决方案原理进行了系统的研究,并且针对室内外同频干扰的影响程度进行了测试验证,经过验证业务信道PRB随机化干扰解决方案中业务负载在30%左右时,抑制干扰的效果最好;室内外波束协同功能在室外宏基站邻区空载或者高加扰(70%)时,开启该功能对下行速率的提升更明显;开启室内多波束功能后下行速率要明显高于单波束情况。最后给出了同频干扰控制方案部署建议。

关键词: 同频干扰, RF规划, PRB随机化, 波束协同, 室内多波束

Abstract:

5G indoor and outdoor deployment with the same frequency will lead to the decline of network coverage performance and user service experience.The causes of indoor and outdoor interference with the same frequency was systematically analyzed.The principle of three indoor and outdoor co-channel interference solutions, namely PRB random interference solution, indoor and outdoor beam cooperative interference solution and indoor multi beam interference solution were studied.The results show that the PRB random interference solution has the best interference suppression effect when the traffic load is about 30%.When the indoor and outdoor beam cooperation function is turned on when the adjacent area of the outdoor macro station is no-load or high load (70%), the improvement of the downlink rate is more obvious.When the indoor multi-beam function is turned on, the downlink rate is significantly higher than that of single beam.Finally, the deployment suggestions of co-channel interference control scheme were given.

Key words: co-channel interference, radio frequency planning, PRB randomization, beam coordination, indoor multi-beam

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