20MHz动态频谱共享的组网性能分析与验证

Performance Analysis and Experimental Verification of 20MHz Dynamic Spectrum Sharing Network

动态频谱共享(DSS, Dynamic Spectrum Sharing)在有限的频谱资源下部署4G/5G网络协同,实现4G向5G平滑演进,同时利用低频段实现5G网络广覆盖等方面具有重要意义,虽然DSS技术有以上诸多优点,但在组网中引入DSS的同时会引入异系统间的诸多干扰影响组网性能。通过对DSS的技术方案进行分析,对DSS组网下的多种通信制式的性能基于开销计算的方式进行理论评估,并在室外布置20个基站的实验场地,先通过DSS组网下的定点测试来验证异系统间干扰对各个通信制式性能的影响,最后通过拉网测试给出DSS组网下各种通信制式的吞吐量。目前尚没有对20 MHz DSS的组网性能进行实验验证的文献,对于频谱资源紧张需要在Sub 3 GHz下部署4G/5G协同组网的运营商具有参考价值。

Dynamic spectrum sharing(DSS) is of great significance in deploying 4 G/5 G network coordination under limited spectrum resources, realizing the smooth evolution from 4 G to 5 G, and achieving wide coverage of 5 G network with low frequency band. Although the DSS technology has the above advantages, the introduction of DSS in the network will yield a lot of interference between different systems and thus affect the network performance. Through the analysis of the technical solution of the DSS, the performance of various communication systems under DSS networking is theoretically evaluated based on the overhead calculation. Moreover, an outdoor experimental site is arranged with 20 base stations, and the influence of interference between different systems on the performance of various communication modes is verified by fixed-point tests under the DSS networking. Finally, the throughput of various communication modes under the DSS network is given through the drive test. Since there is no literature to verify the networking performance of 20 MHz DSS, this paper shows great reference value for operators to deploy 4 G/5 G collaborative networking in Sub 3 GHz due to the shortage of spectrum resources.