Path Loss Evaluation for RIS-Aware Mobile Systems

Overview

The following dataset presents the Path Loss (PL) characteristics for 5G/6G mobile systems supported by Reconfigurable Intelligent Surfaces (RIS).

Scenario

The considered network scenario includes 8 three-cell Base Stations (BSs) placed within Poznan city (surroundings of the Old Market) and supported by 15 Reconfigurable Intelligent Surfaces, which are able to reflect and manipulate a radio signal to influence occurrences such as interferences, coverage, or human exposure. The locations of RIS devices have been selected by the project members referring to the empty areas, where the impact of RISs on PL distribution could be crucial. Next, the suspension heights of the RISs have been manipulated to evaluate the possible improvement of radio signal propagation within the studied area.

Methodology

The PL calculations have been based on the mathematical formulas from the scientific literature (RIS Far-Field Beamforming Case - RIS-FFBC, Source: References section [1]) and reports (Urban Macro-Cell - UMa, Source: References section [2]) performed within the digital simulation runs by using the Green Radio Access Network Design (GRAND) tool (developed by teams from the Ghent University & Poznan University of Technology).

Simulation setup

The setup of the input parameters for used mathematical formulas (PL distribution models) has been done in accordance with the values attached within the delivered literature positions (cited within the Methodology description and the publications included in the Related works section of the following dataset) and adjusted to the considered study. Furthermore, the data used to model the network environment (building distribution, coverage area, base stations' locations) are the real data collected by the City Hall of Poznan and one of the Polish Mobile Operators, respectively.

Results

The results of the aforementioned investigations have been included in the attached files, which can be described as follows:

The first 2 columns denote the X and Y coordinates for the measurement points, for which the Path Loss values (via LOS, NLOS, or RIS) have been obtained. The third column presents the observed minimal PL value for a particular measurement point. The study has been performed for 5 different configurations - RIS disabled (_results_wmas_no_ris.csv), RIS enabled placed at default heights (_results_wmas_ris_0m.csv), RIS enabled and placed at heights differing from the initial (default) heights about 10 (_results_wmas_ris_10m.csv), 20 (_results_wmas_ris_20m.csv), and 30 (_results_wmas_ris_30m.csv) meters. 

Acknowledgment

More details about the conducted studies have been described within the attached papers (Related works section). The work (including the following dataset preparation) by A. Samorzewski and A. Kliks was realized within project no. 2021/43/B/ST7/01365 funded by the National Science Center in Poland.