Abstract
The International Telecommunication Union (ITU) has recently announced the detailed 5G specifications for International Mobile Telecommunications (IMT-2020). A number of candidate Radio Interface Technologies (RITs) were being evaluated by the independent evaluation groups of the ITU. Meanwhile, the roll out of fifth generation (5G) is now going on, and 5G services are offered by more than 160 mobile network operators (MNO). This paper presents the evaluation of the proponent technologies, including the ones specified as <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$3^{\text {rd}}$ </tex-math></inline-formula> generation partnership project (3GPP) 5G new radio (NR). The entire 3GPP specifications were examined and evaluated through simulation using Matlab and a custom simulator based on the Go-language. The simulator facilitated the comprehensive evaluation of the 5G NR performance by using the IMT-2020 evaluation framework. Some of the submitted technologies displayed certain discrepancies which were reported to ITU as well as discussed with proponents to improvise the shortcomings. The detailed results and observations are presented in this paper.
Highlights
The international telecommunication union radio communication sector (ITU-R) has set the requirements for international mobile telecommunications-2020 (IMT-2020) which defined the emergence of the fifth generation (5G) mobile communication standards [1]
PEAK SPECTRAL EFFICIENCY Peak spectral efficiency is an important parameter in any wireless standard. It defines how many number of bits per second is sent in a given one Hz of bandwidth. It depends on many factors, such as, channel bandwidth, sub-carrier spacing, total number of subcarrier available in orthogonal frequency division multiplexing (OFDM) symbol, physical resource block (PRB) and so on [10]
Key performance metrics corresponding to the evaluation of the 3rd generation partnership project (3GPP) 5G New radio (NR) IMT-2020 radio interface technology as well as their related findings are discussed in this paper
Summary
The international telecommunication union radio communication sector (ITU-R) has set the requirements for international mobile telecommunications-2020 (IMT-2020) which defined the emergence of the fifth generation (5G) mobile communication standards [1]. It informed that along with Long term evolution-M (LTE-M) and Narrow band-Internet of Things (NB-IoT), they satisfy all the performance requirements of IMT-2020 (3GPP TR 38.913) [3] as a set of RAT’s Proponents such as China, Korea, European telecommunications standards institute-Digital enhanced cordless telecommunications (ETSI-DECT) Forum, and NuFront have developed suitable technology and submitted to ITU-R as candidate technology for IMT-2020. The IEGs evaluate the self report and the technology for the proposed radio interface technologies (RITs) and set of RITs (SRITs) by following the guidelines of evaluation process as listed by ITU-R in report M.2412 [6]. IMT-2020 [6] is expected to work in different scenario and tested in the following environments: 1) Indoor Hotspot-eMBB: An indoor isolated area focused on stationary and pedestrian users with a very large traffic level at offices and/or shopping malls. Simulator modules include configuration setting, network layout, pathloss, fading effect, channel model and frame generation.
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