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
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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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Journal ArticleDOI
Joint Optimization of Channel Selection and Frame Scheduling for Coexistence of LTE and WLAN
TL;DR: Evaluation results demonstrate that SOA can achieve an LTE throughput comparable to that of the optimal solution, while maintaining fairness between LTE and WLAN by selecting appropriate channels and conducting effective frame scheduling.
Proceedings ArticleDOI
On LTE-WiFi coexistence and inter-operator spectrum sharing in unlicensed bands: altruism, cooperation and fairness
TL;DR: It is proved that the coalitional game is always zero-monotonic, and Shapley value is also max-min fair, and it is shown that Shapleyvalue provides much better fairness than proportional fairness as determined by entropy and Jain's index metrics while having roughly equal average airtime.
Journal ArticleDOI
Deep Learning-Based Spectrum Prediction Collision Avoidance for Hybrid Wireless Environments
Ruben Mennes,Maxim Claeys,Felipe A. P. de Figueiredo,Irfan Jabandzic,Ingrid Moerman,Steven Latre +5 more
TL;DR: Spectrum Prediction Collision Avoidance (SPCA) is presented, an algorithm that can predict the behavior of other surrounding networks, by using supervised deep learning; and adapt its behavior to increase the overall throughput of both its own Multiple Frequencies Time Division Multiple Access network as well as that of the other neighboring networks.
Journal ArticleDOI
Comprehensive Spectrum Management for Heterogeneous Networks in LTE-U
TL;DR: Simulation results show that the CASLUA protocol helps to avoid interference and increases the average throughput by up to 40 percent for both Wi-Fi and LTE users in LTE-Unlicensed.
Posted Content
Auction-Based Coopetition between LTE Unlicensed and Wi-Fi
TL;DR: In this article, the authors proposed a spectrum sharing framework for the co-competition between LTE and Wi-Fi in the unlicensed band, where the LTE network can choose to work in one of the two modes: in the competition mode, the LTE provider randomly accesses an unlicensed channel, and interferes with the access point using the same channel; in the cooperation mode, it delivers traffic for the WiFi users in exchange for the exclusive access of the corresponding channel.
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
TL;DR: An adjusted Shannon capacity formula is introduced, where it is shown that the bandwidth efficiency can be calculated based on system parameters, while the SNR efficiency is extracted from detailed link level studies.
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
Understanding and mitigating the impact of RF interference on 802.11 networks
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