5G Functional Splits for vRAN and Future RAN Cloudification

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5G Functional Splits for vRAN and Future RAN Cloudification


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5G Functional Splits for vRAN and Future RAN Cloudification

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Open RAN and how the mobile industry is moving away from legacy “monolithic” based radio access network is the hottest topic during the past couple of years. This approach is the cornerstone for 5G and future mobile networks to be multi-vendor, multi-technology, and cloud-based. This tutorial addresses the new concepts of distributed RAN based on different types of splits and how this new paradigm needs a new orchestration and network management.The tutorial starts with reviews of the current trends in the overall design of 5G network architecture and will address how these architectures translate into new 5G RAN architecture requirements. The 5G protocol stack architecture will be discussed in detail; differences with 4G, and what are the reasonable function splits in 5G RAN. Also, we will discuss the impact and challenges of fronthaul and backhaul availability for different types of splits in the future 5G deployments. Due to exponential increases in mobile data demands in recent years and deployment of 5G networks, soon network densification is considered as a critical mechanism in the evolution of cellular network deployments. In the ultra-dense heterogeneous networks for 5G, the base stations are brought closer and closer to the users through dense deployments. However, the performance and capacity of the network do not increase monotonously with the increasing number of base stations due to inter-cell interference and backhaul/fronthaul limitation. We will address the challenges and solutions to tackle densification problems. is a 20 years veteran executive of the wireless and telecommunications industry. His in-depth understanding of current mobile technologies, together with his awareness in diverse environment is grounded in two decades of first-hand experience in working for mobile operators and vendors across the world. Directly involved in standardization efforts and product developments for 3G and 4G systems.

5G Functional Splits for vRAN and Future RAN Cloudification

Babak Jafarian (Casa Systems Inc, USA)

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