A Converged Evolved Ethernet Fronthaul for the 5G Era

We assess the performance of two distinct functional splits based on latency/latency variation and mapping efficiency, both individually and in unison. By considering hardware-offloading possibilities for a low-layer split (especially a pre-resource mapper split) using an option-6 software-based loc...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 2018-11, Vol.36 (11), p.2528-2537
Main Authors: Assimakopoulos, Philippos, Jim Zou, Habel, Kai, Elbers, Jorg-Peter, Jungnickel, Volker, Gomes, Nathan J.
Format: Article
Language:English
Subjects:
5G mobile communication
cloud-radio access network (C-RAN)
Ethernet
Ethernet fronthaul
Forward error correction
Mapping
Mobile fronthaul
Protocols
Software
Throughput
time-sensitive networking
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Summary:We assess the performance of two distinct functional splits based on latency/latency variation and mapping efficiency, both individually and in unison. By considering hardware-offloading possibilities for a low-layer split (especially a pre-resource mapper split) using an option-6 software-based local thermal equilibrium split as an example, we show how data rate, Ethernet frame size and, in general, traffic generation characteristics will be very important aspects in the design of the future Ethernet mapping function. Then, an integrated Ethernet fronthaul with legacy and new/evolved split functionality operating at 100 Gb/s link rate is presented with the state-of-the art sub-100-ns latency variation for a timing-protocol flow. This is achieved through the application of a gap-filling aggregator, used for the first time in such a mobile fronthaul application.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2018.2874148