Correction to “Dynamic Range-Aware Uplink Transmit Power Control in LTE Networks: Establishing an Operational Range for LTE's Open-Loop Transmit Power Control Parameters ( $\alpha, P_{0}$)” [Oct 14 521-524]

Berger, Sascha; Almeroth, Bjoern; Suryaprakash, Vinay; Zanier, Paolo; Viering, Ingo; Fettweis, Gerhard

doi:10.1109/lwc.2014.2375551

Cited by 10 publications

(24 citation statements)

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“…Hence, we are interested on the dependency of the DR as a function of the TPC parameters α and P 0 given a set L of the total signal losses that are observed at the BS from all UEs connected to this BS. This dependency has been originally derived in [3]. We summarize the findings in the next subsection.…”

Section: Lte Open-loop Ul Tpcmentioning

confidence: 83%

“…Since the difference in path loss in a LTE macro cell can easily be in the range of 60 dB, we are forced to control the UE's transmit power in order to guarantee that all signals received at the base station (BS) at the same time are within a certain range. The range of received signal powers at the BS is referred *Correspondence: sascha.berger@tu-dresden.de 1 Vodafone Chair Mobile Communcations Systems, Technische Universität Dresden, 01062 Dresden, Germany Full list of author information is available at the end of the article to as the UL dynamic receive power range (DR) D and is defined as the difference between the 5th and the 95th percentile of the set of receive powers (in dB) of signals that are received at the BS simultaneously [2,3]. The DR at which the weak UEs start to suffer performance degradation 1 depends on the quantization resolution of the ADC and is denoted as the DR threshold D TH .…”

Section: Introductionmentioning

confidence: 99%

“…However, Bulakci et al do not justify this choice. In [3], Berger et al derive a closed form expression for DR as a function of LTE's TPC parameters α (the path loss correction factor) and P 0 (a cell/UE specific parameter) and estimate the DR threshold to be in the range from 20 to 50 dB. They derive these numbers by considering the link budget of ADCs with a resolution between 13 bits and 16 bits 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Hence, in this work, we experimentally determine the DR threshold for an ADC with 12 bits quantization resolution and compare our result with the link-budget-based estimations from [3]. We arrange an experimental setup that closely mimics the LTE UL transmission of two UEs to a single BS.…”

Section: Introductionmentioning

confidence: 99%

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Experimental evaluation of the uplink dynamic range threshold

Berger

Danneberg

Zanier

et al. 2015

J Wireless Com Network

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Despite the orthogonality of LTE's uplink transmission, it can happen that signals which are received at the base station with low power are drown out by strong signals from other users. Reason is the limited quantization resolution of the base station's analog-to-digital converter. Since this effect causes a quality of service degradation for users at the cell edge, the dynamic receive power range of uplink signals arriving at the base station should be upper limited. However, setting an adequate upper limit for the dynamic receive power range is not trivial since many effects, such as quantization noise, fast fading etc., decrease the dynamic range which the analog-to-digital converter can handle in theory. In this paper, we measure the maximal uplink dynamic receive power range, denoted as uplink dynamic range threshold, for our LTE-like measurement setup by monitoring the uplink bit-error-rate of a first user while decreasing its transmit power during the presence of a second adjacently scheduled user with fixed transmit power. As the measured threshold is 31.4 ± 7.6 dB, we can conclude that a link-budget-based estimation of the dynamic receive power range, which has been published previously, is accurate since its result coincides with the measurement.

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Section: Lte Open-loop Ul Tpcmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental evaluation of the uplink dynamic range threshold

Berger

Danneberg

Zanier

et al. 2015

J Wireless Com Network

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“…Para ello se ha asumido que todos los usuarios requieren un valor de Signal to Noise plus Interference Ratio (SINR) fijo de 5 dB, y se ha considerado que el sistema se encuentra en condiciones de saturación. Bajo estas premisas, se calcula la potencia de transmisión necesaria para que cada usuario alcance la SINR objetivo, de acuerdo al modelo de control de potencia en lazo abierto definido en la Ecuación 1 [16]:…”

Section: Escenario Y Evaluaciónunclassified

Simulación genérica a nivel de sistema para soluciones avanzadas de gestión de recursos

Rodríguez

Sarasúa

Díez

et al. 2017

Proceedings XIII Jornadas De Ingenieria Telematica - JITEL2017

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Resumen-A pesar del notable esfuerzo llevado a cabo por la comunidad científica en el ámbito de la tecnología LTE, aún no existe una metodología globalmente aceptada para analizar este tipo de redes. Igualmente, no se conoce una única solución que responda a todos los requisitos que se pueden plantear a la hora de acometer su análisis, de modo que se emplean diferentes herramientas y soluciones, cada una con sus ventajas e inconvenientes. Una de las limitaciones más importantes es la dificultad para evaluar escenarios con un número elevado de elementos de red, lo que podría reflejar la situación de redes heterogéneas (HetNets). En otros casos, no se presta mucha atención a las características del nivel de servicio, suponiendo habitualmente que el sistema está saturado (full-buffer). Este trabajo presenta un entorno de simulación flexible y genérico (GWNSyM -Generic Wireless Network System Modeler), que permite el despliegue de escenarios complejos, y el análisis de diferentes técnicas y soluciones de gestión, así como nuevas arquitecturas de red. La herramienta se valida analizando una red muy heterogénea, con un elevado número de usuarios. Sobre este escenario se han analizado diferentes técnicas de acceso, incluyendo DUDe (Downlink-Uplink Decoupling), que plantea un cambio sustancial frente a las soluciones tradicionales de selección de acceso.Palabras Clave-Network Modeling, Simulation, LTE/LTE-A, DUDe I. INTRODUCCIÓNDe acuerdo a las previsiones actuales [1], la demanda de tráfico en redes móviles inalámbricas se incrementará de forma notable en los próximos años. Esto es debido, entre otras razones, a la consolidación de servicios de gran capacidad, tales como el streaming de vídeo o los juegos online, que compartirán los recursos de las redes con otros más tradicionales, como la navegación web o las descargas de ficheros.Aunque a día de hoy las tecnologías 4G no están totalmente consolidadas, la comunidad investigadora ya está dirigiendo sus esfuerzos a la definición de las bases de la 5G, que daría soporte a la previsible heterogeneidad de servicios. Así, se prevé que en el futuro coexistan redes de diferentes tecnologías, y que la cooperación entre ellas se lleve a cabo de manera natural. Por ejemplo, se espera que las estrategias de densificación mediante small-cells jueguen un papel muy importante en los próximos años [2], ya que pueden proporcionar un importante aumento de la capacidad. Otras técnicas que se han incluido recientemente en las especificaciones del 3GPP son las referidas a la cooperación entre elementos de red, o técnicas Cooperative Multi-Point (CoMP), o el desacoplamiento de los enlaces ascendente y descendente de las conexiones [3], o Downlink-Uplink Decoupling (DUDe).Además de las soluciones que se sitúan en las capas inferiores de las redes celulares (gestión de recursos), en las capas superiores las técnicas de virtualización [4], Network Function Virtualization (NFV) y Software Defined Networks (SDN), se presentan como elementos clave de los despliegues de red en los próximos años ...

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Impact of fractional power control on downlink uplink decoupled‐based HetNets in varying path loss exponent environment

Ali

Aslam

Ahmed

2022

Trans Emerging Tel Tech

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Uplink power control in cellular networks have proved to be an effective technique for reducing uplink interference levels, resulting in improved uplink signal to interference and noise ratio, especially for cell-edge user equipments (UEs). Having said that, the impact of fractional power control (FPC) on the performance of downlink uplink decoupled-(DUDe) based HetNets while considering varying path loss exponent (PLE) environment has not been investigated as of yet, the reason behind which was to simplify the system model and obtain tractable results. In this article, we have developed a generalized analytical framework, incorporating the effect of FPC, in an effort to investigate its impact on DUDe performance in varying PLE environment. Furthermore, we have considered different small base station's (SBS) transmit powers to study its effect, paired with FPC, on DUDe-based HetNets. Moreover, we have performed a baseline comparison of DUDe performance against conventional coupled UE association based on maximum downlink received power. Performance indicators like decoupled and coupled uplink coverage probability and decoupled and coupled average spectral efficiency have been analyzed in this paper. The results presented in this paper highlight the impact of the FPC on DUDe performance in varying PLE environment.

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Correction to “Dynamic Range-Aware Uplink Transmit Power Control in LTE Networks: Establishing an Operational Range for LTE's Open-Loop Transmit Power Control Parameters ( $\alpha, P_{0}$)” [Oct 14 521-524]

Cited by 10 publications

References 1 publication

Experimental evaluation of the uplink dynamic range threshold

Experimental evaluation of the uplink dynamic range threshold

Simulación genérica a nivel de sistema para soluciones avanzadas de gestión de recursos

Impact of fractional power control on downlink uplink decoupled‐based HetNets in varying path loss exponent environment

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