tuzsutТруды учебных заведений связиProceedings of Telecommunication Universities1813-324X2712-8830СПбГУТ10.31854/1813-324X-2022-8-3-80-99tuzsut-401Research ArticleЭЛЕКТРОНИКА, ФОТОНИКА, ПРИБОРОСТРОЕНИЕ И СВЯЗЬELECTRONICS, PHOTONICS, INSTRUMENTATION AND COMMUNICATIONSМодель технологии сетевого позиционирования метровой точности 5G NR. Часть 2. Обработка сигналов PRSSimulation Model of 5G NR Network Positioning Technology with Meter Accuracy. Part 2. PRS Signals Processinghttps://orcid.org/0000-0002-5358-1895ФокинГ. А.FokinG.

Григорий Алексеевич Фокин, доктор технических наук, доцент, профессор кафедры радиосвязи и вещания 

Санкт-Петербург, 193232

Grigoriy Fokin

St. Petersburg, 193232

grihafokin@gmail.comСанкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-БруевичаРоссияThe Bonch-Bruevich Saint Petersburg State University of TelecommunicationsRussian Federation202206102022838099Copyright © Фокин Г.А., 20222022Фокин Г.А.Fokin G.This work is licensed under a Creative Commons Attribution 4.0 License.https://tuzs.sut.ru/jour/article/view/401

Вторая часть исследования о моделировании технологии сетевого позиционирования метровой точности 5G NR посвящена процедурам обработки разностно-дальномерных измерений на основе сконфигурированных опорных сигналов позиционирования PRS с результирующей оценкой координат пользовательского устройства методом наблюдаемой разности времен прихода сигналов OTDOA. Программная реализация процедур первичной и вторичной обработки сигналов PRS в имитационной модели использует встроенные функции пакета расширения 5G Toolbox специального программного обеспечения Matlab. В результате оценки точности позиционирования пользовательских устройств в сетях стандарта 5G NR средствами имитационного моделирования, показано, что в диапазоне FR1 точность оценок координат менее одного метра достигается при увеличении ширины полосы частот с 50 до 60 МГц, а максимальная точность позиционирования в диапазоне FR2 в канале с шириной полосы частот 400 МГц и частотой дискретизации 491,52 МГц составила 0,2 м.  

The second part of the study on 5G NR network positioning technology with meter accuracy modeling is devoted to the procedures for range-difference measurements processing based on configured PRS positioning reference signals with the resulting estimate of the user equipment coordinates based on observed time difference of arrival (OTDOA) of the signals. The software implementation of the procedures for PRS signals primary and secondary processing in the simulation model uses the built-in functions of the 5G Toolbox extension package of the special MATLAB software. The assessment of the positioning accuracy of user devices in 5G NR networks using simulation modeling in the FR1 range shows that the accuracy of coordinate estimates of less than one meter is achieved when increasing the bandwidth from 50 to 60 MHz with the maximum positioning accuracy in the FR2 band in a channel having a bandwidth of 400 MHz and a sampling rate of 491.52 MHz was 0.2 m.

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The authors declare that there are no conflicts of interest present.