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
- pp 1-6
TLDR
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.Abstract:
The deployment of modern mobile systems has faced severe challenges due to the current spectrum scarcity. The situation has been further worsened by the development of different wireless technologies and standards that can be used in the same frequency band. Furthermore, the usage of smaller cells (e.g. pico, femto and wireless LAN), coexistence among heterogeneous networks (including amongst different wireless technologies such as LTE and Wi-Fi deployed in the same frequency band) has been a big field of research in the academy and industry. In this paper, we provide a performance evaluation of coexistence between LTE and Wi-Fi systems and show some of the challenges faced by the different technologies. We focus on a simulator-based system- level analysis in order to assess the network performance in an office scenario. Simulation results show that LTE system performance is slightly affected by coexistence whereas Wi-Fi is significantly impacted by LTE transmissions. In coexistence, the Wi-Fi channel is most often blocked by LTE interference, making the Wi-Fi nodes to stay on the LISTEN mode more than 96% of the time. This reflects directly on the Wi-Fi user throughput, that decreases from 70% to ≈100% depending on the scenario. Finally, some of the main issues that limit the LTE/Wi-Fi coexistence and some pointers on the mutual interference management of both the systems are provided.read more
Citations
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Proceedings ArticleDOI
A Generic Model For Performance Characterization of LTE Operators in LAA Networks
Abdel Karim Ajami,Hassan Artail +1 more
TL;DR: A framework based on stochastic geometry to model the coexistence of LAA operators is developed and validated against Monte Carlo simulations and the light is shed on the severe impact of such co-existence on the performance of some operators where their area system throughput may get drastically reduced.
Performance Enhancement by Exploiting the Spatial Domain for Cost, Space and Spectrum Constraint 5G Communication
TL;DR: This thesis takes the advantage of spatially located multiple antennas of base station (BS) and access point (AP) for the sake of beamforming and interference reduction and approaches the resource scarcity from the non-orthogonal multiple access (NOMA) point of view.
Book ChapterDOI
Cognitive radio network technologies and applications
Rajorshi Biswas,Jie Wu +1 more
TL;DR: This chapter discusses LTE and Wi-Fi sharing specifically and presents the complete architecture of CRN, and additionally discusses other scenarios including the applications of the CRN.
Journal ArticleDOI
A dual threshold listen-before-talk for unlicensed LTE systems
Jae-Hoon Kim,Sungchul Choi +1 more
TL;DR: A composite metric of throughput and fairness to evaluate the performance of LTE-LAA access is developed and it is indicated that the advantage of the proposed method improves 4.3–7.6% than traditional LBT method.
Alocação de recursos em redes LTE utilizando bandas n ão-licenciadas
TL;DR: A LTE (Long Term Evolution) em banda nao-licenciada (U-LTE) surgiu como uma solucao promissora para o problema do enorme crescimento no trafego de dados moveisNo trabalho, propomos uma abordagem de programacao estocastica para alocacao de recursos a fim of expandir o atendiment
References
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Proceedings ArticleDOI
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Preben Mogensen,Wei Na,Istvan Z. Kovacs,Frank Frederiksen,A. Pokhariyal,Klaus I. Pedersen,Troels Kolding,Klaus Hugl,Markku Kuusela +8 more
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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
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