| Autor: |
Khan, Bahram, Nidhi, OdetAlla, Hatem, Flizikowski, Adam, Mihovska, Albena, Velez, Fernando J. |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Khan, B, .., N, OdetAlla, H, Flizikowski, A, Mihovska, A & Velez, F J 2022, ' Survey on 5G Second Phase RAN Architectures and Functional splits ', IEEE Communications Surveys & Tutorials, no. Special Issue . |
| Popis: |
The Radio Access Network (RAN) architecture evolves with different generations of mobile communication technologies and forms an indispensable component of the mobile network architecture. The main component of the RAN infrastructure is the Base Station, which includes a Radio Frequency unit and a Baseband unit. The RAN is a collection of base stations connected to the core network to provide coverage through one or more radio access technologies. The advancement towards cloudnative networks has led to centralizing the baseband processing of radio signals. There is a trade-off between the advantages of RAN centralization (energy efficiency, power cost reduction, and the cost of the fronthaul), and the complexity of carrying traffic between the data processing unit and distributed antennas.5G networks hold high potential for adopting the centralizedarchitecture to reduce maintenance costs while reducing deploymentcosts and improving resilience, reliability and coordination.Incorporating the concept of virtualization, and centralized RANarchitecture enables to meet the overall requirements for both thecustomer and Mobile Network Operator. Functional splitting isone of the key enablers for 5G networks. It supports CentralizedRAN, virtualized Radio Access Network, and the recent OpenRadio Access Networks. This survey provides a comprehensivetutorial on the paradigms of the RAN architecture evolution,its key features, and implementations challenges. It providesa thorough review of the 3rd Generation Partnership Projectfunctional splitting complemented by associated challenges andpotential solutions. The survey also presents an overview ofthe fronthaul and its requirements and possible solutions forimplementation, algorithms, and required tools whilst providinga vision on the evaluation beyond 5G second phase. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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