Publication:
Multi-connectivity based uplink/downlink decoupled energy efficient user association in 5G heterogenous CRAN

dc.contributor.departmentDepartment of Electrical and Electronics Engineering
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorErgen, Sinem Çöleri
dc.contributor.kuauthorSaimler, Merve
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-09T12:11:11Z
dc.date.issued2020
dc.description.abstractMulti-connectivity (MC) is proposed in Fifth-Generation mobile communications systems (5G) to mitigate the deterioration of Quality-of-Service owing to line-of-sight blockage and lack of communication resources. The main idea of MC is to associate single user equipment with multiple network layers and multiple radio access technologies, simultaneously. In previous studies, MC is demonstrated to increase capacity, provide high reliability and decrease outage probability. However, for the first time in literature, in this letter, we incorporate MC into the optimization of the total power consumption in 5G Heterogeneous Cloud Radio Access Networks ( HCRAN )s. Upon formulation of the problem as a binary integer linear programming problem, proving its NP-hardness, a heuristic algorithm is proposed consisting of linear programming relaxation and rounding and generalized assignment problem heuristic, which takes the outputs of the linear programming relaxation and rounding as inputs and checks if it further minimizes the power consumption. We analyze power consumption, time complexity and achievable rate of the proposed algorithm and verify its superiority over existing methods by simulations.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue4
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipN/A
dc.description.versionAuthor's final manuscript
dc.description.volume24
dc.identifier.doi10.1109/LCOMM.2020.2967050
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR03097
dc.identifier.issn1089-7798
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85083214919
dc.identifier.urihttps://hdl.handle.net/20.500.14288/1021
dc.identifier.wos528817100033
dc.keywordsEnergy efficiency
dc.keywordsHeterogeneous Cloud Radio Access Networks (HCRAN)s
dc.keywordsMulti-connectivity (MC)
dc.keywordsUL/DL decoupling
dc.keywordsUser association
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.grantnoNA
dc.relation.ispartofIEEE Communications Letters
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/9755
dc.subjectTelecommunications
dc.titleMulti-connectivity based uplink/downlink decoupled energy efficient user association in 5G heterogenous CRAN
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorSaimler, Merve
local.contributor.kuauthorErgen, Sinem Çöleri
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Electrical and Electronics Engineering
local.publication.orgunit2Graduate School of Sciences and Engineering
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