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
LTE-Unlicensed Coexistence Mechanism: A Matching Game Framework
TL;DR: A matching game framework is presented to tackle the coexistence issues between the LTE/Wi-Fi systems and, together with the low-complexity and semi-distributive implemented algorithms, can accommodate many application-oriented coexist issues in LTE-Unlicensed.
Journal ArticleDOI
Licensed and Unlicensed Spectrum Allocation in Heterogeneous Networks
TL;DR: In this paper, the authors proposed centralized user association and spectrum allocation across many access points in a heterogeneous network, where a queueing model is introduced to capture the lower spectral efficiency, reliability, and additional delays of data transmission over the unlicensed bands.
Journal ArticleDOI
LTE in the Unlicensed Spectrum: A Survey
TL;DR: The dawn of LTE access to unlicensed spectrum as a boon to the spectrum scarcity problem is introduced and some existing coexistence mechanisms for successful, harmonious deployment of LTE and Wi-Fi in the same unlicensed band are discussed.
Journal ArticleDOI
CBRS Spectrum Sharing between LTE-U and WiFi: A Multiarmed Bandit Approach
TL;DR: This paper considers LTE-U to operate as a General Authorized Access (GAA) user and develops a multiarmed bandit (MAB) based spectrum sharing technique for a smooth coexistence with WiFi and incorporates downlink power control which yields a high energy efficiency and interference suppression.
Journal ArticleDOI
Spatial Reuse for Coexisting LTE and Wi-Fi Systems in Unlicensed Spectrum
TL;DR: The theoretical analysis and proposed schemes are further confirmed with exhaustive numerical simulation results and spatial DoF and power can be optimally allocated to balance the throughput between the small cell and Wi-Fi systems in different scenarios.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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.