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Who Disaggregated My RAN eBook

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radisys.com 3 Radisys Series — Who Disaggregated My RAN? eBook Chapter 1 How it All Falls in Place The promise of 5G is unlocking significant change and sparking the 4th Industrial Revolution, driving use cases such as industrial IoT and improved healthcare, to augmented reality, autonomous vehicles and smart cities. But if 5G is to succeed in delivering these use cases, the industry needs access to an open disaggregated Radio Access Network (RAN) that gives operators the flexibility required to meet the network challenges of 5G cost effectively. While much of the network has already benefited from a wave of disaggregation and virtualization in support of 4G/LTE, the RAN remains the last piece of the network to be disaggregated. In this blog post, the first in my "Who Disaggregated My RAN" series, I want to start out by providing the background that has led to the industry's push for the adoption of an open, disaggregated RAN. Before it All Started In the not-too distant past, operators primarily used proprietary, closed systems from traditional vendors that provided expensive monolithic solutions and required that the solution be purchased as a whole package. The RAN was no exception – operators were limited in their options as these solutions lacked hardware and software separation and interfaces were proprietary and non-interoperable. What worked with one vendor didn't always work with another. This lack of choice led to inefficiencies in the network as interfaces were tightly coupled with proprietary solutions, giving operators little visibility into their RAN nodes and spectrum efficiency. Furthermore, operators were challenged to introduce new services as the hard-coded logic and algorithms in these solutions offered little or no flexibility. The industry needed to adopt virtualization trends and reduce CapEx/OpEx in RAN deployments.

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