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radisys.com 40 Radisys Series — Who Disaggregated My RAN? eBook Given the wide range of use cases, the needs are also very diverse and are based on the deployment scenarios in each specific vertical. In the case of industrial networks, reliability (including the ability to provide constant connectivity and withstand interference), availability (recovering from any failure), latency, and security are the most important requirements. In media-oriented use cases like HD camera feed and AR/VR applications, the emphasis is on providing huge amounts of bandwidth on a continuous basis. In almost all of these deployments, the common requirements are ensuring coverage, providing exclusive bandwidth and enforcing security and sovereignty of data. Private network solutions must ensure the appropriate spectrum, deployment architecture and network management features to meet these requirements. Since these networks are typically locally managed and controlled, the network management approach and subscriber management should be simplified and enterprise friendly. Spectrum and Deployment Options To operate private networks, an appropriate spectrum strategy is needed. There are four different approaches that can be adopted: Dedicated licensed spectrum, leased spectrum, shared spectrum, or unlicensed spectrum. In many countries, especially in Europe, national authorities are considering or have already allocated dedicated spectrum for industrial networks. In the U.S., the CBRS spectrum band, which is a shared spectrum, is primarily used for private LTE networks. In addition to the approach of having dedicated spectrum, a private network can be enabled by reserving dedicated slice(s) in 5G operator networks. Private networks also offer new monetization opportunities to operators. In the venues and campuses where there is a need to serve subscribers of multiple operators, a neutral host approach may be used. In this case, different operators share a common network built by a neutral host provider. Open Disaggregated RAN for Private Networks Disaggregated RAN solutions inherently offer the flexibility to suit the variety of deployment needs in the case of private networks. With open interfaces, these RAN components make it easy to deploy multi-vendor private networks. Small cell solutions may be preferred in a neutral host deployment. Private networks often have unique deployment needs with respects to available space, spectrum, processing hardware, environment and enclosures. Open RAN solutions offer a great amount of flexibility and multi-vendor choices in both hardware form factors and software options to enable the appropriate solution and features as per the use cases and deployment scenarios. In many deployments of private networks, there is a need to customize the implementations to meet some special requirements like additional security and call processing modified specific to the needs of a vertical. Open RAN solutions offer such flexibility. Another common need is to integrate with industry or enterprise-oriented management layer. Deploying such customized private networks tailored to the specific needs in RAN, core network

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