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dc.contributor.authorRuffini, Marcoen
dc.contributor.authorAnandarajah, Aleksandraen
dc.date.accessioned2020-07-01T17:26:59Z
dc.date.available2020-07-01T17:26:59Z
dc.date.issued2020en
dc.date.submitted2020en
dc.identifier.citationS. Das, F. Slyne, A. Kaszubowska and M. Ruffini, Virtualised EAST-WEST PON Architecture Supporting Low-Latency communication for Mobile Functional-Split Based on Multi-Access Edge Computing, Journal of Optical Communications and Networking, 12, 10, 2020, 109 - 119en
dc.identifier.otherYen
dc.descriptionPUBLISHEDen
dc.description.abstractUltralow latency end-to-end communication with high reliability is one of the most important requirements in 5G networks to support latency-critical applications. A recent approach toward this target is to deploy edge computing nodes with networking capabilities, known as multiaccess edge computing (MEC), which can greatly reduce the service end-to-end latency. However, the use of MEC nodes poses radical changes to the access network architecture. This requires movement from the classical point-to-multipoint (or point-to-point) structure, used to deliver residential broadband and cloud radio access network (Cloud-RAN) services, to a mesh architecture that can fully embed the MEC nodes with all other end points (i.e., mobile cells, fixed residential, businesses). In this paper, we propose what we believe to be a novel passive optical network (PON)-based mobile fronthaul transport architecture based on PON virtualization that allows EAST–WEST communication along with traditional NORTH–SOUTH communication. The architecture enables the end points of a PON tree, where usually optical networking units (ONUs) are located, to also host MEC nodes by deploying an edge optical line terminal (OLT) capable of communicating directly with adjacent ONUs, by reflecting wavelength signals from the splitter nodes. We experimentally show that signal backscattering due to the reflection at the splitter does not affect the system performance. In addition, using protocol level simulations, we show how this architecture can maintain low latency (≈100µs≈100µs) in varying mobile traffic conditions by offloading ONUs (i.e., where remote units of Cloud-RAN cells are located) to other edge OLTs through dynamic formation of virtual PON slices. Furthermore, our results show how an efficient migration strategy for ONUs can be chosen depending on the traffic load, different functional split configurations, and the PON capacity.en
dc.format.extent109en
dc.format.extent119en
dc.language.isoenen
dc.relation.ispartofseriesJournal of Optical Communications and Networkingen
dc.relation.ispartofseries12en
dc.relation.ispartofseries10en
dc.rightsYen
dc.subjectUltralow latencyen
dc.subject5G networksen
dc.subjectMultiaccess Edge Computing (MEC)en
dc.subjectAccess network architectureen
dc.subjectPassive Optical Network (PON)en
dc.subjectCloud Radio Access Network (Cloud-RAN)en
dc.subjectOptical Line Terminal (OLT)en
dc.subjectOptical Networking Units (ONUs)en
dc.titleVirtualised EAST-WEST PON Architecture Supporting Low-Latency communication for Mobile Functional-Split Based on Multi-Access Edge Computingen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/ruffinmen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/anandaraen
dc.identifier.rssinternalid218199en
dc.identifier.doihttp://dx.doi.org/10.1364/JOCN.391929en
dc.rights.ecaccessrightsopenAccess
dc.identifier.orcid_id0000-0001-6220-0065en
dc.identifier.urihttp://hdl.handle.net/2262/92894


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