WizHaul: On the Centralization Degree of Cloud RAN Next Generation Fronthaul

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dc.contributor.author Garcia Saavedra, Andres
dc.contributor.author Salvat, Josep Xavier
dc.contributor.author Li, Xi
dc.contributor.author Costa-Perez, Xavier
dc.date.accessioned 2018-07-24T10:54:41Z
dc.date.available 2018-07-24T10:54:41Z
dc.date.issued 2018
dc.identifier.bibliographicCitation Garcia-Saavedra, A., Salvat, J.X., Li, X., Costa-Perez, X. (2018). WizHaul: On the Centralization Degree of Cloud RAN Next Generation Fronthaul. IEEE Transactions on Mobile Computing
dc.identifier.issn 1536-1233
dc.identifier.uri http://hdl.handle.net/10016/27252
dc.description.abstract Cloud Radio Access Network (C-RAN) will become a main building block for 5G. However, the stringent requirements of current fronthaul solutions hinder its large-scale deployment. In order to introduce C-RAN widely in 5G, the next generation fronthaul \agsrev{interface} (NGFI) will be based on a cost-efficient packet-based network with higher path diversity. In addition, NGFI shall support a flexible functional split of the RAN to adapt the amount of centralization to the capabilities of the transport network. In this paper we question the ability of standard techniques to route NGFI traffic while maximizing the centralization degree---the goal of C-RAN. We propose two solutions jointly addressing both challenges: (i) a nearly-optimal backtracking scheme, and (ii) a low-complex greedy approach. We first validate the feasibility of our approach in an experimental proof-of-concept, and then evaluate both algorithms via simulations in large-scale (real and synthetic) topologies. Our results show that state-of-the-art techniques fail at maximizing the centralization degree and that the achievable C-RAN centralization highly depends on the underlying topology structure.
dc.description.sponsorship This work has received funding from the European Unions Horizon 2020 research and innovation programme under grant agreement No 671598 (5G-Crosshaul project) and 761536 (5G-Transformer project).
dc.format.extent 14
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IEEE
dc.rights © 2018 IEEE
dc.subject.other 5G
dc.subject.other Cloud RAN
dc.subject.other Next generation fronthaul
dc.subject.other Crosshaul
dc.title WizHaul: On the Centralization Degree of Cloud RAN Next Generation Fronthaul
dc.type article
dc.subject.eciencia Telecomunicaciones
dc.identifier.doi https://doi.org/10.1109/TMC.2018.2793859
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/761536
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/671598
dc.type.version acceptedVersion
dc.identifier.publicationtitle IEEE Transactions on mobile computing
dc.identifier.uxxi AR/0000021447
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