Análise de desempenho de uma transmissão downlink em rede 5G seguindo modelo de canal 3GPP Release 15

Abstract

The 5G network standardized, initially, by Release 15 launched by the 3rd Generation Partnership Project (3GPP) in September 2018 aims to establish a mobile network service far superior to its previous standard, the 4G / LTE. To accomplish this task, this network offers higher transmission rates, variation of the subcarrier spacing, greater bandwidth, use of other frequency bands, among others. From this, this work proposes the evaluation of the performance of the 5G network in question through of simulations of a downlink transmission based on specifications of Release 15 and in an example code of the software MATLAB. To generate different situations and configurations, a wide variation of parameters was made, such as channel bandwidth, subcarrier spacing, modulation and number of antennas. In addition, an adaptation of the code was developed to allow a comparison of the variation of the transmission distance with the throughput of the system. With the results generated, it was possible to compare the network throughput values with the theoretical values presented in the 3GPP organization document. These results were very close to the theory in most cases, besides showing that the transmission rate has a very high dependence on the signal-to-noise ratio and the channel bandwidth. After the end of the work, it was possible to notice an efficient operation of the 5G network, but with results far from those expected for it. Thus, it was confirmed that the initial version of the 3GPP Release 15 specification reviewed still does not provide all of the target requirements as a goal in the IMT-2020 program. In this sense, it is important to highlight that in the analyzed version, at first, it sought integration to the previous LTE networks (non-standalone). Finally, as the specifications expand (standalone) and new Releases come out, certainly the objectives of 5G networks will be met.