rio is shown in Figure 4.6.11 and is based around a pri- vate indoor enterprise network within a factory, which is often referred to as a smart factory. Figure 4.6.11 highlights location, disaggregation, and platform choices suitable for this scenario and, while other combinations are possible, to provide an easy-to-understand example only one is selected. Location - In this example the private network requires space in a server room and locations around the factory to install DUs with the connection between these locations provided by a dedicated Ethernet network. This is a similar requirement to the indoor enterprise example and is typical of many indoor scenarios where there is a server/ equipment room available and a desire to keep the footprint at the cell site small. Disaggregation - With a central location available many of the small cell functions can be centralized. However, for a private network the centralized location contains some dis- tributed EPC (dEPC) functionality and for a factory MEC is also likely. The combination of dEPC and MEC permits the factory to keep some, or all, of its data within the factory, which is beneficial from both a latency and privacy perspective. 4 NG-RAN Architecture Server room Factory (1) Location (2) Disaggregation ORAN FH Virtualized Software (3) Platform Ethernet Hardware Figure 4.6.11 Private enterprise scenario. Platform - With much of the small cell centralized this scenario is ideal for a pool of virtualized small cells running on off-the-shelf server hardware, and the dEPC and MEC can also run on the same server hardware. The RRU will be a low-cost SoC design. Frequency - In this example the small cell is operating in the sub-6 GHz range, but it could be licensed or unlicensed frequencies. The factory may have a relationship with an operator allowing it to use licensed spectrum, could be in a region where spectrum is being reserved for these types of vertical industries, or could use unlicensed frequencies. Operational mode - This example is for a private networ