5 GHz spectrum. The highest capacity is achievable if there are no Wi-Fi networks installed in the same area using the same channel, but all networks would be using 5G-U only. Further results can be found from [2]. 15 5G Phase 2 and Beyond Wi-Fi and 5G-U performance with interference Wi-Fi with Wi-Fi Wi-Fi with 5G-U 5G-U with Wi-Fi 5G-U with 5G-U interference interference interference interference Figure 15.3 Performance of Wi-Fi and 5G-U in presence of interference. The key motivations for the use of 5G-U instead of Wi-Fi can be summarized as follows: Better capacity Better tolerance for interference Better coverage Seamless integration in the licensed 5G or LTE operation, including mobility, and security Flexible deployment both with aggregation with the licensed band operation, as well as with the dual connectivity approach or with standalone 5G-U operation Compared to the LTE-based operation, the use of the 5G-based approach additionally offers the following: Lower latency Better energy efficiency Lower overhead Higher data rates with larger bandwidth Easier deployment with the support of standalone 5G-U and dual connectivity oper- ation, as LTE LAA is limited to carrier aggregation deployments. The specifications for 5G-U (NR-U) are expected to be completed in 1H/2020 for 5 GHz band operation (and possibly above the 6 GHz range as well), which would then enable deployments in the 2021 timeframe. The 6 GHz band likely requires additional means to determine which locations are suitable for deployments to ensure coexis- tence with the legacy system (fixed links) being used in that band before additional systems like 5G-unlicensed (or Wi-Fi) could be deployed there. 15.2.2 Industrial loT and URLLC Enhancements The key item for addressing new vertical industries in Release 16 and beyond is (IIoT) [4], which is basically delivering a wireless Ethernet type of service over the 5G network. 15.2 3GPP Release 16 Timing and Key Themes The Release-15-based approach basically brings the low latency aspect to the new fram