Enabling Dynamically Centralized RAN Architectures in 5G and Beyond
In order to deliver the high data rates promised for 5G networks, mobile base stations need to be deployed in dense layouts. This results in increased inter-cell interference, which can be mitigated by leveraging centralized architectures in radio access networks. Nonetheless, centralizing all the p...
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| Veröffentlicht in: | IEEE eTransactions on network and service management 2021-09, Vol.18 (3), p.3509-3526 |
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| creator | Alba, Alberto Martinez Janardhanan, Shakthivelu Kellerer, Wolfgang |
| description | In order to deliver the high data rates promised for 5G networks, mobile base stations need to be deployed in dense layouts. This results in increased inter-cell interference, which can be mitigated by leveraging centralized architectures in radio access networks. Nonetheless, centralizing all the processing requires prohibitively high link capacities for the fronthaul network connecting centralized and distributed units. In contrast, a static, partially-centralized architecture yields poor performance as it fails to adapt to instantaneous interference situations. In this work, we show that a dynamically centralized architecture enables drastic interference reductions even when using a very limited fronthaul network. We propose multiple algorithms to find the optimal centralization option and evaluate their performance on operator-grade hardware. In addition, owing to the dynamicity of the problem being solved, we provide a framework to decide on the best algorithm based on the trade-off between performance, cost, and adaptation time. |
| doi_str_mv | 10.1109/TNSM.2021.3071975 |
| format | Article |
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| subjects | 5G mobile communication Adaptation models Algorithms Centralization Computer architecture Copper Data centers Dynamic flexible functional split Heuristic algorithms Interference Interference cancellation mathematical optimization Performance evaluation Radio equipment Switches wireless networks and cellular networks |
| title | Enabling Dynamically Centralized RAN Architectures in 5G and Beyond |
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