Proceedings ArticleDOI
LTE UL Power Control for the Improvement of LTE/Wi-Fi Coexistence
Fabiano Chaves,Erika Portela Lopes de Almeida,Robson D. Vieira,Andre Mendes Cavalcante,Fuad Mousse Abinader,Sayantan Choudhury,Klaus Doppler +6 more
- pp 1-6
TLDR
The proposed LTE UL power control with interference aware power operating point is a flexible tool to deal with the trade-off between LTE and Wi-Fi performances in coexistence since it is able to set different LTE/Wi-Fi coexistence configurations with the choice of a single parameter.Abstract:
Spectrum sharing is a powerful alternative to deal with the exponential increase on the wireless communication capacity demand In this context, the coexistence of two of the most prominent wireless technologies today, Long Term Evolution (LTE) and Wi-Fi, is an important research topic In the most common Wi-Fi network operation, the Distributed Coordination Function (DCF), communication nodes access the channel only if the interference level is below a certain threshold Then, Wi-Fi operation is severely affected when in coexistence with LTE This paper proposes the use of LTE uplink (UL) power control to improve LTE/Wi-Fi coexistence With the introduction of an additional factor to the conventional LTE UL power control, a controlled decrease of LTE UL transmit powers is carried out according to interference measurements, giving opportunity to Wi-Fi transmissions The proposed LTE UL power control with interference aware power operating point is a flexible tool to deal with the trade-off between LTE and Wi-Fi performances in coexistence, since it is able to set different LTE/Wi-Fi coexistence configurations with the choice of a single parameter Simulation results show that the proposed approach can provide similar or better performance for both LTE and Wi-Fi networks than a previously proposed interference avoidance mechanismread more
Citations
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Proceedings ArticleDOI
Fairly Coexistence of LTE and WiFi: A Markov Game Framework
Shangjing Lin,Jianguo Yu +1 more
TL;DR: An analytical model to describe the access mechanisms of the heterogeneous coexistence of Wi- Fi and cellular networks sharing the unlicensed spectrum is developed and a prediction based learning based frequency access mechanism is proposed.
Proceedings ArticleDOI
Scenario-oriented small cell network design for LTE-LAA and Wi-Fi coexistence on 5 GHz
Bolin Chen,Jiming Chen,Jie Zhang +2 more
TL;DR: A comprehensive summary of the scenario-oriented coexistence, which practically takes features of a specific scenario as the base for designing deployment mode of LTE-LAA and/or Wi-Fi, is surveyed.
Proceedings ArticleDOI
Optimal traffic balancing scheme in small cells between licensed and unlicensed bands
TL;DR: This work introduces the system model of heterogeneous networks where LTE-U coexists with Wi-Fi and proposes a new optimal traffic balancing scheme for small cells to assign traffic over several licensed bands and single unlicensed band which use the same power budget.
Patent
Method for sharing of unlicensed radio frequency bands by cellular LTE and WiFi networks
Tommaso Melodia,Zhangyu Guan +1 more
TL;DR: In this article, the spectrum sharing problem is modeled as a fairness constrained mixed integer nonlinear optimization problem, by jointly determining dynamic channel selection, carrier aggregation and fractional spectrum access for the first wireless networks, while guaranteeing fair spectrum access to the coexisting wireless networks based on a cross-technology fairness criterion.
Journal ArticleDOI
A QoE-Based Framework for Video Streaming Over LTE-Unlicensed
TL;DR: This work proposes a framework for video transmission over LTE-U to achieve harmonious coexistence with WiFi systems while taking into account the quality of experience (QoE) requirements of the user equipment (UE), and presents analytical schemes for predicting PSNR and delay of the received video sequence.
References
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TL;DR: An overview of the techniques being considered for LTE Release 10 (aka LTEAdvanced) is discussed, which includes bandwidth extension via carrier aggregation to support deployment bandwidths up to 100 MHz, downlink spatial multiplexing including single-cell multi-user multiple-input multiple-output transmission and coordinated multi point transmission, and heterogeneous networks with emphasis on Type 1 and Type 2 relays.
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TL;DR: Concepts underlying the "property" and "commons" debate are presented, options for spectrum reform are clarified, and the trade-offs of spectrum sharing are described.
Proceedings ArticleDOI
Enabling LTE/WiFi coexistence by LTE blank subframe allocation
Erika Portela Lopes de Almeida,Andre Mendes Cavalcante,Rafael C. D. Paiva,Fabiano Chaves,Fuad Mousse Abinader,Robson D. Vieira,Sayantan Choudhury,Esa Tuomaala,Klaus Doppler +8 more
TL;DR: This paper considers two of the most prominent wireless technologies available today, namely Long Term Evolution (LTE), and WiFi, and addresses some problems that arise from their coexistence in the same band, and proposes a simple coexistence scheme that reuses the concept of almost blank subframes in LTE.
Proceedings ArticleDOI
Coexistence of IEEE802.15.4 with other Systems in the 2.4 GHz-ISM-Band
Axel Sikora,Voicu F. Groza +1 more
TL;DR: In this article, the mutual effects of IEEE 802.15.4 and 802.11 in the 2.4 GHz ISM band are examined with real-life equipment, in order to quantify coexistence issues.
Proceedings ArticleDOI
Performance Evaluation of LTE and Wi-Fi Coexistence in Unlicensed Bands
Andre Mendes Cavalcante,Erika Portela Lopes de Almeida,Robson D. Vieira,Fabiano Chaves,Rafael C. D. Paiva,Fuad Mousse Abinader,Sayantan Choudhury,Esa Tuomaala,Klaus Doppler +8 more
TL;DR: A simulator-based system- level analysis in order to assess the network performance in an office scenario shows that LTE system performance is slightly affected by coexistence whereas Wi-Fi is significantly impacted by LTE transmissions.