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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Journal ArticleDOI
Interference management using direct sequence spread spectrum (DSSS) technique in LTE-Wi-Fi network
TL;DR: In this paper, an enhanced DSSS technique was proposed which considers both serving and its neighboring base stations in the network, and new coefficients, chip rate coefficient (a ) and radius fraction coefficient (b ) were applied in DSSs technique in order to improve the SINR value.
Dissertation
Advanced Technologies Enabling Unlicensed Spectrum Utilization in Cellular Networks
TL;DR: This thesis proposes a priority-based Wi-fi transmission scheme with congestion control and studied the throughput of the native Wi-Fi network, as well as the LWA user delay when the nativeWi-Fi user is under heavy traffic conditions.
Models and algorithms for spectrum coexistence in wireless networks
TL;DR: Different technologies that are needed for flexible spectrum management to support the coordination that is needed for coexistence between many small cell wireless networks are examined.
DissertationDOI
WiFi and LTE Coexistence in the Unlicensed Spectrum
TL;DR: A Q-Learning based dynamic duty cycle selection technique is proposed for configuring LTE transmission gaps, so that a satisfactory throughput is maintained both for LTE and WiFi systems, enabling effective coexistence of LTE andWi-fi systems in the unlicensed band.
Proceedings ArticleDOI
An enhancement of direct sequence spread spectrum (DSSS) technique in LTE and Wi-Fi coexistence technologies
TL;DR: In this paper, the authors proposed an enhanced version of SINR based on serving and neighboring path loss to mitigate co-channel interference by using DSSS technique in LTE-Wi-Fi network.
References
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LTE-advanced: next-generation wireless broadband technology [Invited Paper]
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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Approaches to spectrum sharing
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.