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Energy footprint reduction in 5G reconfigurable hotspots via function partitioning and bandwidth adaptation

Bartzoudis, Nikolaos and Font-Bach, Oriel and Miozzo, Marco and Donato, Carlos and Harbanau, Pavel and Requena-Esteso, Manuel and López Bueno, David and Ucar, Iñaki and Azcorra, Arturo and Serrano, Pablo and Mangues-Bafalluy, Josep and Payaró, Miquel (2017) Energy footprint reduction in 5G reconfigurable hotspots via function partitioning and bandwidth adaptation. In: The 5th International Workshop on Cloud Technologies and Energy Efficiency in Mobile Communication Networks (CLEEN 2017), 22 June 2017, Turin, Italy.

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Abstract

Cloud-based radio access networks (C-RAN) are expected to face important challenges in the forthcoming fifth generation (5G) communication systems. For this reason, more flexible C-RAN architectures have recently been proposed in the literature, where the radio communication stack is partitioned and placed across different RAN nodes to tackle the 5G capacity and latency requirements. In this paper, we show that this functional split also supports energy efficiency, especially when it is combined with bandwidth adaptation. To this aim, we have built a dynamic hotspot prototype, where the hardware-accelerated physical-layer is placed in the remote radio head, and higher software-based layers are placed in a server (either directly connected or remotely accessible). This setup allowed us to experimentally evaluate the power consumption of key hardware modules when adapting the bandwidth and the modulation and coding scheme. The real-time operation of the testbed allows further experimentation with different 5G use cases and the evaluation of other key performance indicators.

Item Type: Conference or Workshop Papers (Paper)
Uncontrolled Keywords: HW-SW partitioning, 5G networking, 5G dynamic hotspots, energy efficiency, reconfigurability, power measurements.
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Rebeca De Miguel
Date Deposited: 20 Jun 2017 13:21
Last Modified: 20 Jun 2017 14:18
URI: http://eprints.networks.imdea.org/id/eprint/1606

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