Optimal energy-aware load balancing and base station switch-off control in 5G HetNets

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorLassila, Pasi
dc.contributor.authorGebrehiwot, Misikir Eyob
dc.contributor.authorAalto, Samuli
dc.contributor.departmentDepartment of Communications and Networking
dc.date.accessioned2019-08-15T08:27:25Z
dc.date.available2019-08-15T08:27:25Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2021-08-05
dc.date.issued2019-08-04
dc.description.abstractWe consider optimal energy-aware load balancing of elastic downlink data traffic inside a macrocell with multiple small cells within its coverage area. The system is modeled as a set of parallel queues. In particular, the model of the small cell includes the setup delay resulting from activating the base station after being placed in a low power off state and the idle timer controlling the amount of time to wait before being switched off. We apply the theory of MDPs to develop state-dependent dynamic policies for controlling both the routing of the arrivals as well as the length of the idle timer that minimizes the weighted sum of energy and performance. In particular, we show that in the optimal policy the idle timer control can be simplified to selecting a value arbitrarily close to zero or infinite. Additionally, by utilizing the first step of the well-known policy iteration method, we develop an explicit near-optimal dynamic policy for routing the arrivals and also for determining the idle timer configuration of the system, based on the expressions for the future marginal costs. The performance of the policy is illustrated through numerical examples.en
dc.description.versionPeer revieweden
dc.format.extent13
dc.format.extent10-22
dc.format.mimetypeapplication/pdf
dc.identifier.citationLassila , P , Gebrehiwot , M E & Aalto , S 2019 , ' Optimal energy-aware load balancing and base station switch-off control in 5G HetNets ' , Computer Networks , vol. 159 , pp. 10-22 . https://doi.org/10.1016/j.comnet.2019.05.001en
dc.identifier.doi10.1016/j.comnet.2019.05.001
dc.identifier.issn1389-1286
dc.identifier.issn1872-7069
dc.identifier.otherPURE UUID: cef20218-6c18-4b0f-b4a6-3416762d4da9
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/cef20218-6c18-4b0f-b4a6-3416762d4da9
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85065404981&partnerID=8YFLogxK
dc.identifier.otherPURE LINK: http://www.sciencedirect.com/science/article/pii/S1389128618307795
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/33636860/ELEC_Lassila_energy_aware_lb_with_timerV2_002_.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/39752
dc.identifier.urnURN:NBN:fi:aalto-201908154797
dc.language.isoenen
dc.publisherElsevier
dc.relation.ispartofseriesComputer Networksen
dc.relation.ispartofseriesVolume 159en
dc.rightsopenAccessen
dc.subject.keywordHetNets
dc.subject.keywordload balancing
dc.subject.keywordperformance-energy tradeoff
dc.subject.keywordparallel queues
dc.subject.keywordMarkov Decision Processes
dc.titleOptimal energy-aware load balancing and base station switch-off control in 5G HetNetsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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