Fronthaul and backhaul requirements of flexibly centralized radio access networks
- 27 October 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Wireless Communications
- Vol. 22 (5), 105-111
- https://doi.org/10.1109/mwc.2015.7306544
Abstract
Cloud radio access networks promise considerable benefits compared to decentralized network architectures, but they also put challenging requirements on the fronthaul and backhaul network. Flexible centralization can relax these requirements by adaptively assigning different parts of the processing chain to either the centralized baseband processors or the base stations based on the load situation, user scenario, and availability of fronthaul links. In this article, we provide a comprehensive overview of different functional split options and analyze their specific requirements. We compare these requirements to available fronthaul technologies, and discuss the convergence of fronthaul and backhaul technologies. By evaluating the aggregated fronthaul traffic, we show the benefits of flexible centralization and give guidelines on how to set up the fronthaul network to avoid over- or under-dimensioning.Keywords
This publication has 9 references indexed in Scilit:
- Are Heterogeneous Cloud-Based Radio Access Networks Cost Effective?IEEE Journal on Selected Areas in Communications, 2015
- Benefits and Impact of Cloud Computing on 5G Signal Processing: Flexible centralization through cloud-RANIEEE Signal Processing Magazine, 2014
- Cloud technologies for flexible 5G radio access networksIEEE Communications Magazine, 2014
- Increasing the Capacity of Large-Scale HetNets through Centralized Dynamic Data OffloadingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2014
- Opportunistic Hybrid ARQ—Enabler of Centralized-RAN Over Nonideal BackhaulIEEE Wireless Communications Letters, 2014
- LTE/LTE-A signal compression on the CPRI interfaceBell Labs Technical Journal, 2013
- Heterogeneous Backhaul for Cloud-Based Mobile NetworksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2013
- Quantitative analysis of split base station processing and determination of advantageous architectures for LTEBell Labs Technical Journal, 2013
- Wireless network capacity management: A real options approachEuropean Journal of Operational Research, 2007