Enabling Energy-Efficient and Backhaul-aware Next Generation Heterogeneous Networks

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisorMaeder, Andreas, Dr., Nokia Networks, Germany
dc.contributor.advisorWijting, Carl, Dr., Nokia Networks, Finland
dc.contributor.authorPrasad, Athul
dc.contributor.departmentTietoliikenne- ja tietoverkkotekniikan laitosfi
dc.contributor.departmentDepartment of Communications and Networkingen
dc.contributor.schoolSähkötekniikan korkeakoulufi
dc.contributor.schoolSchool of Electrical Engineeringen
dc.contributor.supervisorTirkkonen, Olav, Prof., Aalto University, Department of Communications and Networking, Finland
dc.date.accessioned2015-10-27T10:02:02Z
dc.date.available2015-10-27T10:02:02Z
dc.date.dateaccepted2015-10-12
dc.date.defence2015-11-20
dc.date.issued2015
dc.description.abstractHeterogeneous networks have been firmly established as the direction in which next-generation cellular networks are evolving. We consider the dense deployment of small cells to provide enhanced capacity, while the macro cells provide wide area coverage. With the development of dual connectivity technology, deploying small cells on dedicated carriers has become an attractive option, with enhanced flexibility for splitting traffic within the network. The power consumption and latency requirements of the backhaul link are also gaining increasing prominence due to these factors. Backhaul link quality itself is expected to play an important role in influencing the deployment costs of next-generation 5G systems.  Energy efficiency as a network design paradigm is also gaining relevance due to the increasing impact cellular networks are having on the global carbon emission footprint. For operators, improving energy efficiency has the added advantage of reducing network operation expenditures. For the end-users, avoiding unnecessary draining of device battery power would improve the user experience.  In this work, we study energy efficient mechanisms for inter-frequency small cell discovery, based on mobility awareness and proximity estimation. Further, we apply generalized small cell discovery concepts in a device-to-device communication environment in order to optimize the energy consumption for device discovery. We also look at energy efficient small cell operations based on traffic characteristics and load constraints-based offloading in relation to the radio access and backhaul power consumption. In addition we study intelligent means of dist-ributing delay-critical functionalities such as Hybrid ARQ, while centralizing the computationally-intense processes in a 5G, cloud-based, centralized radio access network. Numerical evaluations done using a LTE-Advanced heterogeneous network and analytical settings indicate that significant UE and network power consumption reductions could be achieved with the considered enhancements. Using the optimized small cell operation schemes investigated in this work, reductions in network power consumption and consequent improvements in the overall energy efficiency of the network were observed. The performance of the distributed opportunistic HARQ mechanism for a centralized radio access network is compared to the optimal and static retransmission mechanisms, and the evaluated scheme is shown to perform close to the optimal mechanism, while operating with a non-ideal backhaul link.en
dc.format.extent190
dc.format.mimetypeapplication/pdfen
dc.identifier.isbn978-952-60-6467-3 (electronic)
dc.identifier.isbn978-952-60-6466-6 (printed)
dc.identifier.issn1799-4942 (electronic)
dc.identifier.issn1799-4934 (printed)
dc.identifier.issn1799-4934 (ISSN-L)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/18208
dc.identifier.urnURN:ISBN:978-952-60-6467-3
dc.language.isoenen
dc.opnPeisa, Janne, Dr., Ericsson Research, Finland
dc.publisherAalto Universityen
dc.publisherAalto-yliopistofi
dc.relation.haspart[Publication 1]: A. Prasad, P. Lundén, O. Tirkkonen and C. Wijting. Energy-Efficient Flexible Inter-Frequency Scanning Mechanism for Enhanced Small Cell Discovery. In IEEE 77th Vehicular Technology Conference (VTC Spring), Dresden, pp. 1–5, June 2013. DOI 10.1109/VTCSpring.2013.6692547
dc.relation.haspart[Publication 2]: A. Prasad, P. Lundén, O. Tirkkonen and C. Wijting. Energy Efficient Small-Cell Discovery Using Received Signal Strength Based Radio Maps. In IEEE 77th Vehicular Technology Conference (VTC Spring), Dresden, pp. 1–5, June 2013. DOI 10.1109/VTCSpring.2013.6692543
dc.relation.haspart[Publication 3]: A. Prasad, O. Tirkkonen, P. Lundén, O.N.C. Yilmaz, L. Dalsgaard, and C.Wijting. Energy Efficient Inter-Frequency Small Cell Discovery Techniques for LTE-Advanced Heterogeneous Network Deployments. IEEE Communications Magazine, vol. 51, no. 5, pp. 72–81, May 2013. DOI 10.1109/MCOM.2013.6515049
dc.relation.haspart[Publication 4]: A. Prasad, P. Lundén, O. Tirkkonen and C. Wijting. Enhanced Small Cell Discovery in Heterogeneous Networks Using Optimized RF Fingerprints. In IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), London, pp. 2973–2977, Sept. 2013. DOI 10.1109/PIMRC.2013.6666656
dc.relation.haspart[Publication 5]: A. Prasad, K. Samdanis, A. Kunz, and J. Song. Energy Efficient Device Discovery for Social Cloud Applications in 3GPP LTE-Advanced Networks. In IEEE Symposium on Computers and Communications (ISCC), Madeira, pp. 1–6, June 2014. DOI 10.1109/ISCC.2014.6912497
dc.relation.haspart[Publication 6]: A. Prasad, A. Maeder and C. Ng. Energy Efficient Small Cell Activation Mechanism for Heterogeneous Networks. In IEEE Globecom Workshops (GC Wkshps), Atlanta, pp. 754–759, Dec. 2013. DOI 10.1109/GLOCOMW.2013.6825079
dc.relation.haspart[Publication 7]: A. Prasad, and A. Maeder. Backhaul-aware Energy Efficient Heterogeneous Networks with Dual Connectivity. Telecommunication Systems, vol. 59, no. 1, pp. 25–41, May 2015. DOI 10.1007/s11235-014-9893-4
dc.relation.haspart[Publication 8]: P. Rost, and A. Prasad. Opportunistic Hybrid ARQ – Enabler of Centralized-RAN over Non-Ideal Backhaul. IEEE Wireless Communications Letters, vol. 3, no. 5, pp. 481–484, Oct. 2014. DOI 10.1109/LWC.2014.2327982
dc.relation.ispartofseriesAalto University publication series DOCTORAL DISSERTATIONSen
dc.relation.ispartofseries175/2015
dc.revCattoni, Andrea F., Prof., Aalborg University, Denmark
dc.revGuvenc, Ismail, Prof., Florida International University, USA
dc.subject.keywordsmall cell discoveryen
dc.subject.keywordenergy efficiencyen
dc.subject.keywordLTE-Advanceden
dc.subject.keywordcloud-based networksen
dc.subject.keywordheterogeneous networksen
dc.subject.keywordmobility estimationen
dc.subject.keyword5Gen
dc.subject.keywordcentralized RANen
dc.subject.otherElectrical engineeringen
dc.titleEnabling Energy-Efficient and Backhaul-aware Next Generation Heterogeneous Networksen
dc.typeG5 Artikkeliväitöskirjafi
dc.type.dcmitypetexten
dc.type.ontasotDoctoral dissertation (article-based)en
dc.type.ontasotVäitöskirja (artikkeli)fi
local.aalto.archiveyes
local.aalto.digiauthask
local.aalto.digifolderAalto_64726
local.aalto.formfolder2015_10_27_klo_11_26

Files

Original bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
isbn9789526064673.pdf
Size:
2.43 MB
Format:
Adobe Portable Document Format