# Compatibility Analysis Between RedCap Non-Public Networks and 5G NR in TDD FR1 and FR2 Bands
## 5 Simulation Parameters  
To simulate the interference case between private RedCap systems and public 5G NR networks in the FR1 and FR2 bands, typical characteristics of RedCap and 5G NR were used. The RedCap characteristics were derived from 3 GPP specifications, whereas the 5G NR characteristics were derived from the ITU-R documents that were available during the study cycles of the Working Party 5D, and common methodologies for interference analysis were used [15, 16].  
The implementation of various IoT standards, such as LPWAN, NB-IoT, LTE-M, and others, demonstrated that the density of these devices can escalate to tens of devices per square kilometer. This proliferation could result in the presence of hundreds of thousands or even millions of potential interfering IoT devices. It is essential to consider the activity factors of these devices when scaling these numbers [17].  
In our study, we specifically examine the scenario where 10,000 interferers operate simultaneously; 95% of them are located indoors given that we are studying private networks of RedCap for industrial applications [18]. These interferers are randomly dispersed within the confines of the 5G New Radio (NR) public network area [19, 20]. This controlled approach allows us to analyze and assess the potential impact of a considerable number of concurrent interfering devices, providing valuable insights into the challenges associated with IoT device density within the 5G NR environment. Table 1 provides the characteristics of the RedCap devices.  
5G NR networks for the FR1 and FR2 bands are simulated for the urban deployment. Tables 2 and 3 provide the characteristics of the 5G NR networks in the FR1 and FR2 bands.  
Figure 2 presents the antenna pattern of the base station that operates in the FR1 mid-band [21; 22; 23].  
Figure 3 presents the antenna pattern of the base station and user equipment that operate in the FR2 millimeter wave band [16; 18].  
\begin{table}
\begin{tabular}{c c c} \hline
**Parameter** & **FR1** & **FR2** \\ \hline Antenna height & 30 m & 6 m \\ \hline Cell radius & 400 m & 50 m \\ \hline Element gain (dBi) & 6.4 & 5 \\ \hline Horizontal/vertical 3 dB beam width of single element (degree) & 90\({}^{\circ}\) for H 65\({}^{\circ}\) for V & 65\({}^{\circ}\) for both H/V \\ \hline Horizontal/vertical front-to-back ratio (dB) & 30 for both H/V & 30 for both H/V \\ \hline Antenna polarization & Linear \(\pm\) 45\({}^{\circ}\) & Linear \(\pm\) 45\({}^{\circ}\) \\ \hline Antenna array configuration (Column \(\times\) Row) & 4 \(\times\) 8 elements & 8 \(\times\) 8 elements \\ \hline Number of element rows in sub-array, M\({}_{\text{sub}}\) & 3 & 3 \\ \hline Array Ohmic loss (dB) & 2 & 3 \\ \hline Conducted power (before & & \\ Ohmic loss) per antenna element/sub-array (dBm) & 28 & 10 \\ \hline Base station horizontal coverage range (degrees) & \(\pm\)60 & \(\pm\)60 \\ \hline Base station vertical coverage range (degrees) & 90–100 & 90–100 \\ \hline Mechanical downtilt (degrees) & 6 & 10 \\ \hline \end{tabular}
\end{table}
Table 2: Base station characteristics of the victim 5G NR networks in the FR1 and FR2 bands.  
\begin{table}
\begin{tabular}{c c} \hline
**Parameter** & **FR1** & **FR2** \\ \hline Bandwidth & 5/10/15/20 MHz & 100 MHz \\ \hline Deployments & in NR channel (SA only) \\  & no min frequency band requirement \\ \hline Maximum & DL: 2 Mbps up to 150 Mbps \\ Data Rate & UL: 2 Mbps up to 50 Mbps \\ \hline Modulation & Up to 64 QAM & Up to 64 QAM \\ \hline Antennas & 1 (or 2 RX MIMO) & 1 (or 2 RX MIMO) \\ \hline Device & Class = 7 \\ Transmit & Class = 3, +23 dBm & TRP: +23 dBm \\ Power & & EIRP: +43 dBm \\ \hline Duplex Mode & FDD Half or Full, TDD \\ \hline \end{tabular}
\end{table}
Table 1: RedCap devices’ characteristics in the FR1 and FR2 bands.