4G/5G LNR动态频谱共享技术

为实现多频多制式网络完全融合,加速5G全面部署,面向存量4G频谱,引入LNR动态频谱共享技术,解决新制式快速引入、老制式平滑退网、网络资源按需分配等问题,重点研究LNR动态频谱共享技术的实现原理,对4G/5G增益影响进行分析;总结该特性引入的同频异制式干扰问题,规避同频干扰的方法;在无线网络验证过程中,单站定点用户测试,LNR频谱共享100%生效,NR占用100 M相比60 M速率增益为65.3%;NR连片拉网测试,NR带宽占用100 M相比60 M,覆盖不会收缩,用户感知速率增益为33.53%,评估结果符合预期。

Research on 4G/5G LNR Dynamic Spectrum Sharing

To realize the full fusion of multi-frequency and multi-standard network and accelerate the overall 5G deployment,the LTE&NR(LNR)dynamic spectrum technology is introduced for the existing 4G spectrum to solve the problems of rapid introduction of new standards,smooth exit of old standards and on-demand network resource allocation,etc.The implementation principle of LNR dynamic spectrum sharing is highlighted in the paper,and its impacts on 4G/5G gains are analyzed.The co-frequency interference issues with different standards caused by the feature and the corresponding interference avoidance methods are summarized.During the verification on the wireless network,LNR spectrum sharing is 100%effective for fixed-location users served by the single site,where the rate gain of NR bandwidth of 100 MHz is 65.3%compared with 60 MHz.In the NR network-level test,the coverage does not shrink for the NR bandwidth of 100 MHz relative to 60 MHz,and the user-perceived rate gain is 33.53%.The evaluation result meets the expectation.