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中国电信、中兴通讯和高通公司率先在商用2.1GHz(n1)频段完成40MHz带宽动态频谱共享互操作测试验证

2021年1月28日SICHUAN

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在中国电信、中国联通联合组织网络和芯片厂商参加的2.1GHzn1)频段40MHz带宽5G NR4G/5G动态频谱共享(DSS)外场试验中,高通技术公司和中兴通讯宣布近期在中国四川省率先完成基于商用2.1GHzn1)频段的4G/5G动态频谱共享互操作测试验证。本次测试验证基于中国电信与中国联通共享的2.1GHzn1)频段中的40MHz带宽,利用中兴通讯的5G基站以及搭载高通骁龙  X60 5G调制解调器及射频系统的智能手机大小的移动测试设备完成,成功验证了利用动态频谱共享技术,NR下行峰值速率相比于静态配置的20MHz LTE+20MHz NR有大幅提升。同时,根据运营商部署计划,现网搭载高通骁龙X55 5G调制解调器及射频系统的智能手机以及其它类型终端通过软件升级也将同步具备4G/5G动态频谱共享能力。

4G相比,5G在设计之初就能够支持广泛的频段,包括高频毫米波(24GHz以上)、中频段(1-6GHz)和低频段(1GHz以下),并且能够支持TDDFDD部署模式。如何基于目前4G LTE使用的频段部署5G并且确保不影响4G LTE用户性能,成为全球运营商面临的重要问题,而动态频谱共享技术则能够有效解决这一问题。它作为3GPP Rel-15标准版本中引入的全新蜂窝特性,能够支持5G NR4G LTE在同一频段/信道上同时运行。动态频谱共享技术还能够根据用户的实时数据需求来动态分配5G NR4G LTE之间的频谱资源。

中国电信用于4G LTE部署的2.1GHz FDD频段,具有良好的频段优势和覆盖能力。利用动态频谱共享,中国电信能在目前用于4G部署的2.1GHz频段中引入5G,通过经济、快捷、高效的方式加速其5G部署,同时提升其4G5G用户的移动体验和小区覆盖性能。在该功能部署后,4G5G终端可以同时接入2.1GHz4G终端的用户体验不受影响,5G用户体验得到提升。

目前,工信部已经明确划分2.1GHzn1)频段中的2*40MHz1920-1960MHz/2110-2150MHz)给中国电信和中国联通用于5G网络部署。在中国电信与中国联通5G无线网络共建共享的背景下,2.1GHzn1)频段将拥有2*40MHz FDD带宽,能够进一步提升5G用户的业务体验。

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