Conference paper Open Access

Subband Configuration Optimization for Multiplexing of Numerologies in 5G TDD New Radio

Lagen, Sandra; Bojovic, Biljana; Goyal, Sanjay; Giupponi, Lorenza; Mangues-Bafalluy, Josep


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    <dct:title>Subband Configuration Optimization for Multiplexing of Numerologies in 5G TDD New Radio</dct:title>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2018</dct:issued>
    <dcat:keyword>5G NR</dcat:keyword>
    <dcat:keyword>FDM of numerologies</dcat:keyword>
    <dcat:keyword>subband configuration</dcat:keyword>
    <dcat:keyword>self-contained slot</dcat:keyword>
    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2018-09-09</dct:issued>
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    <dct:description>&lt;p&gt;The 5G New Radio (NR) access technology defines multiple numerologies to support a wide range of carrier frequencies, deployment scenarios, and variety of use cases. In this paper, we consider a resource allocation problem to efficiently support multiple numerologies simultaneously. We assume frequency division multiplexing (FDM) of numerologies in a time division duplex (TDD) system with a self-contained slot format. We focus on optimizing the numerology subband (SB) configuration, as well as the duplexing ratio between downlink (DL) and uplink (UL) directions within each SB. The optimization problem minimizes the weighted sum of the normalized load (NL) for each SB in each direction. We prove that our optimization problem is convex and, furthermore, we derive the optimal closed-form expressions for the numerology SB configuration and the DL-UL duplexing ratio per SB. The effectiveness of the proposed resource allocation is validated through an end-to-end ns-3 based simulator, which shows how the optimization of the NLs is translated into an improved throughput and delay performance.&lt;/p&gt;</dct:description>
    <dct:description>Grant numbers : 5G NR design in mmWave bands, 5G-REFINE - Resource EfFIcient 5G NEtworks (TEC2017-88373-R), ID-NRU - Standalone and non Standalone NR-U for coexistence and operation in unlicensed spectrum. © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.</dct:description>
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