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Energy and spectrum efficient user association in 5G heterogeneous networks

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10.1109/PIMRC.2016.7794877
 
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hdl:2117/102703

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Mesodiakaki, Agapi
Adelantado Freixer, Ferran
Antonopoulos, AngelosMés informació
Alonso Zárate, Luis GonzagaMés informacióMés informacióMés informació
Verikoukis, Christos
Document typeConference report
Defense date2016
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
Due to the dense small cell deployment to cope with the increased data traffic of fifth generation (5G) networks, the direct backhaul (BH) connection of all small cells to the core network becomes challenging. To that end, millimeter wave (mmWave) technology is a promising solution for cost-efficient high capacity small cell BH links. However, due to the severe signal attenuation at high frequencies, mmWave can provide good coverage only for short distances, thus favoring a multihop 5G BH architecture. In this context, where BH is expected to play a key role, traditional problems such as user association that impact both the network and user performance call for BH-aware strategies. Hence, in this paper, we study the user association problem aiming at the joint energy and spectrum efficiency maximization of the network, without compromising the user quality of service. The problem is formulated as a generalized assignment problem, which considers the capacity and energy consumption both in the access network and BH links. Provided that the considered problem is shown to be NP-hard, we employ optimization techniques to obtain an upper bound on system performance. We also propose a low complexity algorithm, which is shown to outperform the state-of-the-art while achieving near-optimal performance.
CitationMesodiakaki, A., Adelantado, F., Antonopoulos, A., Alonso, L., Verikoukis, C. Energy and spectrum efficient user association in 5G heterogeneous networks. A: IEEE International Symposium on Personal Indoor and Mobile Radio Communications. "2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)". Valencia: Institute of Electrical and Electronics Engineers (IEEE), 2016, p. 1-6. 
URIhttp://hdl.handle.net/2117/102703
DOI10.1109/PIMRC.2016.7794877
ISBN9781509032549
Publisher versionhttp://ieeexplore.ieee.org/document/7794877
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  • WiComTec - Grup de recerca en Tecnologies i Comunicacions Sense Fils - Ponències/Comunicacions de congressos [175]
  • Departament de Teoria del Senyal i Comunicacions - Ponències/Comunicacions de congressos [3.213]
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