Repository logo
 
Publication

Fixed WiMAX Profit Maximisation with Energy Saving through Relay Sleep Modes and Cell Zooming

2011-07Journal article Open access
Simple item page
dc.contributor.authorVelez, Fernando J.
dc.contributor.authordel Camino Noguera, Maria
dc.contributor.authorHolland, Oliver
dc.contributor.authorAghvami, A. Hamid
dc.date.accessioned2024-03-26T10:28:49Z
dc.date.available2024-03-26T10:28:49Z
dc.date.issued2011-07
dc.description.abstractIn Fixed WiMAX, the cost/revenue optimisation function for radio and network planning incorporates the cost of building and maintaining the infrastructure and the impact of the available resources on revenues. Supported throughput typically decreases with larger cells due to the implied greater average distance of users from the base station, although the use of subchannelisation can keep throughput steady with a larger cell radius. The use of sectored base stations facilitates selection of higher order modulation and coding schemes in the cell and can improve throughput; however, sectored equipment is more expensive. Fortuitously, using Relay Stations (RSs) can reduce the deployment cost of such systems. In such a context, if RSs are put into sleep mode during the night and at weekends when they are not necessary, important energy savings can be achieved. With relays, only the consideration of tri-sectored Base Station (BS) antennas with K = 3 (at the cost of extra channels, where nine channels corresponds to a bandwidth of 31.5 MHz) obtains values of system throughput comparable to those without using relays. This is due to the more favourable frame format that is employed under the use of tri-sectored BS antennas. This paper shows that the application of cell zooming in conjunction with relays going into sleep mode at times of low load achieves a notable power saving, corresponding to 10% saving in operation and maintenance cost on average. Moreover, as it is assumed that the DL sub-frame format cannot be changed to a more favourable one, economic performance is better when RSs are deployed. It is however important to highlight that in the absence of RSs, economic performance is still reasonable (for tri-sectored and omnidirectional BSs, 700–800% and 400–450% profit, respectively), compared with the case where RSs are deployed (∼1000 and ∼900% profit, respectively).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFernando J. Velez, Maria del Camino Noguera, Oliver Holland and A. Hamid Aghvami, “Fixed WiMAX Profit Maximisation with Energy Saving through Relay Sleep Modes and Cell Zooming,” Journal of Green Engineering (Special Issue from WPMC 2010), vol. 1, no. 4, July 2011, pp. 355-381.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/14324
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRiver Publisherspt_PT
dc.relationOPPORTUNISTIC-CR - Opportunistic Aggregation of Spectrum and Cognitive Radios: Consequences on Public Policies
dc.relationPlanning and Optimisation for the Coexistence of Mobile and Wireless Networks Towards Long Term Evolution
dc.relation.publisherversionhttps://www.it.pt/Publications/PaperJournal/6308pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/pt_PT
dc.subjectBroadband communicationpt_PT
dc.subjectWiMAXpt_PT
dc.subjectPlanningpt_PT
dc.subjectRelayspt_PT
dc.subjectGreen communicationspt_PT
dc.subjectCell zoomingpt_PT
dc.subjectEconomicspt_PT
dc.titleFixed WiMAX Profit Maximisation with Energy Saving through Relay Sleep Modes and Cell Zoomingpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleOPPORTUNISTIC-CR - Opportunistic Aggregation of Spectrum and Cognitive Radios: Consequences on Public Policies
oaire.awardTitlePlanning and Optimisation for the Coexistence of Mobile and Wireless Networks Towards Long Term Evolution
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEEA-TEL%2F115981%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/256624/EU
oaire.citation.endPage381pt_PT
oaire.citation.issue4pt_PT
oaire.citation.startPage355pt_PT
oaire.citation.titleJournal of Green Engineeringpt_PT
oaire.citation.volume1pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStreamFP7
person.familyNameVelez
person.givenNameFernando J.
person.identifier.ciencia-id1510-E247-C9DB
person.identifier.orcid0000-0001-9680-123X
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationeb831c87-4af4-4978-ba42-43d4d55dbe1f
relation.isAuthorOfPublication.latestForDiscoveryeb831c87-4af4-4978-ba42-43d4d55dbe1f
relation.isProjectOfPublication048cbb8d-fb2a-42a9-9aa3-1b3de104a76a
relation.isProjectOfPublicationc668ccae-35d0-41ba-a0d3-d554f3b01440
relation.isProjectOfPublication.latestForDiscoveryc668ccae-35d0-41ba-a0d3-d554f3b01440

Files

License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

FE - DEM | Documentos por Auto-Depósito
ICI - IT-UBI | Documentos por Auto-Depósito