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Dynamic Configuration and Optimization of WiMAX Networks with Relay Power Saving Modes: Measurement-Based Scenario in a Hilly Region

dc.contributor.authorRobalo, Daniel
dc.contributor.authorOliveira, João R.
dc.contributor.authorVelez, Fernando J.
dc.contributor.authorHolland, Oliver
dc.contributor.authorAghvami, A. Hamid
dc.date.accessioned2024-03-25T12:17:03Z
dc.date.available2024-03-25T12:17:03Z
dc.date.issued2015-06
dc.description.abstractThis paper investigates the performances achievable by WiMAX networks deployed in various sectorization configurations, with and without relay stations (RSs). Further, it studies the dynamic adjustment of the configuration to serve traffic loads at different times of the day while maximising the use of opportunistic sleep modes by relays in conjunction with cell zooming, thereby saving energy. The configuration changes and invocation of opportunistic sleep modes also take into account coverage constraints. This paper first reports extensive propagation measurements that have been undertaken in Covilha˜, a hilly area of Portugal which presents a realistic and challenging propagation scenario. Using this scenario as the topographical basis, practical cellular planning results are then obtained and compared, using the dominant path and ray tracing (RT) functionalities of WinpropTM. It is shown that without RSs present, the supported throughput is lower in practice because coverage is not 100 %. Further, for the case with omnidirectional cells, coverage reduces to only approximately 60 % if RSs go into sleep mode, and for the tri-sectored cells case coverage drops from 95.75 to 81.90 % (based on RT calculations) if RSs go into sleep mode. There is, however, still a reasonable economic performance in all cases. Additional results demonstrate that savings typically of 47.6 % in RSs’ average power consumption can be achieved. These savings are shown to result in a financial saving for the operator of 10 % of the combined operational and maintenance cost. However, it is observed that such solutions have to be used cautiously in hilly regions due to challenges in maintaining coverage.pt_PT
dc.description.sponsorshipFCT; ICT-SOLDER, OPPORTUNISTIC-CR, PROENERGY-WSN, CREaTION, COST IC 0905 ‘‘TERRA’’, ECOOP and IC 1004, PLANOPTI, and by 5G-NORMA. Authors acknowledge contributions from Maria del Camino Noguera and from VIATELpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s11277-015-2818-zpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/14308
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relation2013 - Strategic Project
dc.relationLTE-Advanced Enhancements using Femtocells
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/pt_PT
dc.subjectWiMAXpt_PT
dc.subjectCellular planningpt_PT
dc.subjectEconomicspt_PT
dc.subjectGreen communicationspt_PT
dc.subjectCell zoomingpt_PT
dc.subjectRelay power savingpt_PT
dc.titleDynamic Configuration and Optimization of WiMAX Networks with Relay Power Saving Modes: Measurement-Based Scenario in a Hilly Regionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitle2013 - Strategic Project
oaire.awardTitleLTE-Advanced Enhancements using Femtocells
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FEEI%2FLA0008%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEEA-TEL%2F120666%2F2010/PT
oaire.citation.endPage958pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage937pt_PT
oaire.citation.titleWireless Personal Communicationspt_PT
oaire.citation.volume85pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream3599-PPCDT
person.familyNameRobalo
person.familyNameVelez
person.givenNameDaniel
person.givenNameFernando J.
person.identifier.ciencia-id1510-E247-C9DB
person.identifier.orcid0000-0002-2425-1555
person.identifier.orcid0000-0001-9680-123X
person.identifier.ridN-8884-2013
person.identifier.scopus-author-id24332960100
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationeb831c87-4af4-4978-ba42-43d4d55dbe1f
relation.isAuthorOfPublication.latestForDiscoveryeb831c87-4af4-4978-ba42-43d4d55dbe1f
relation.isProjectOfPublicationc854cbfd-109b-4235-b56b-5c42e367905c
relation.isProjectOfPublicatione6d0337a-1a38-438c-acd7-a426128244e0
relation.isProjectOfPublication.latestForDiscoverye6d0337a-1a38-438c-acd7-a426128244e0

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