# 6G Use Cases and Scenarios: A Comparison Analysis Between ITU and Other Initiatives
## 13 Results and Discussion
### Analysis 3: Comparison Among All Proposed 6G Use Cases  
Following the same approach, we have evaluated the matrix in Appendix B.3 with the results obtained by comparing the 6G use cases to assess their technological similarity. As expected, we have a Hamming distance equal to zero along the main diagonal of the matrix in Appendix B.3. Looking at the rest of the matrix, we observe that the best match in terms of Hamming Distance (namely, it is equal to 0) is obtained if the following cases are compared: (i) immersive experience (HEXA) with immersive communication, and (ii) ubiquitous connectivity (ITU) with the fully connected world (HEXA). Furthermore, it can be observed that the use cases of enhanced communication (from NGA) and immersive communication (from ITU) have a very good match since they rely on the same technologies/applications and services. Figure 7 shows (through stacked bars) if and how much each proposed 6G use case is close to the other ones in terms of required technologies. As shown in Table 13, we extracted the very good matches obtained from the comparison of all the 6G use cases. \begin{table}
\begin{tabular}{c c c} \hline \hline
**Other 6G Initiatives** & **ITU 6G Usage Scenarios** & **Hamming Distance** \\ \hline Fully connected world & Ubiquitous Connectivity & 0.00 \\ \hline Immersive experience & Immersive Communication & 0.04 \\ \hline Distributed Sensing and Communications & Massive Communication & 0.04 \\ \hline Network evolution & AI and Communication & 0.04 \\ \hline Distributed Sensing and Communications & Integrated Sensing and Communication & 0.08 \\ \hline Network evolution & Ubiquitous Connectivity & 0.08 \\ \hline \hline \end{tabular}
\end{table} 
Table 12: Very good matches obtained from the comparison between the ITU 6G usage scenarios and the other initiatives. Figure 6: Values of Hamming distance among the 6G use cases proposed by other initiatives compared with 6G ITU usage scenarios. From the previous table, immersive communication and ubiquitous connectivity usage scenarios from ITU have the best match (Hamming distance equal to zero) with immersive experience and fully connected world use cases from HEXA. Other very good matches \begin{table}
\begin{tabular}{c c c} \hline \hline
**ITU 6G Usage Scenarios** & **Other 6G initiatives** & **Hamming Distance** \\ \hline Immersive Communication & Immersive experience (HEXA) & 0.00 \\ \hline \multirow{2}{*}{Ubiquitous Connectivity} & Fully connected world & 0.00 \\  & (HEXA) & 0.00 \\ \hline AI and Communication & Network evolution (NGMN) & 0.04 \\ \hline \multirow{2}{*}{Massive Communication} & Distributed Sensing and & \\  & Communications (NGA) & 0.04 \\ \hline \multirow{2}{*}{Integrated Sensing and  Communication} & Distributed Sensing and & \\  & Communications (NGA) & 0.08 \\ \hline \multirow{2}{*}{Ubiquitous Connectivity} & Living and working & \\  & everywhere (6G IA) & 0.08 \\ \hline \multirow{2}{*}{Ubiquitous Connectivity} & Network evolution (NGMN) & 0.08 \\ \hline \multirow{2}{*}{AI and Communication} & Ubiquitous Connectivity (ITU) & 0.12 \\ \hline \multirow{2}{*}{AI and Communication} & Fully connected world & 0.12 \\  & (HEXA) & 0.12 \\ \hline \multirow{2}{*}{Integrated Sensing and  Communication} & Massive Communication & \\  & (ITU) & 0.12 \\ \hline \multirow{2}{*}{Integrated Sensing and  Communication} & Trusted Environments & \\  & (HEXA) & 0.12 \\ \hline \multirow{2}{*}{Massive Communication} & Integrated Sensing and  Communication (ITU) & 0.12 \\ \hline \multirow{2}{*}{Ubiquitous Connectivity} & AI and Communication (ITU) & 0.12 \\ \hline \multirow{2}{*}{Hyper-Reliable and Low  Latency Communication} & - & - \\ \hline \hline \end{tabular}
\end{table} 
Table 13: Very good matches among all 6G use cases. Figure 7: Values of Hamming distance among all proposed 6G use cases. are obtained by comparing AI and communication and massive communication ITU usage scenarios with the distributed sensing and communications use cases from NGMN and NGA, respectively. In this case, the Hamming distance is equal to 0.04.