Proceedings ArticleDOI
Licensed-assisted access for WiFi-LTE coexistence in the unlicensed spectrum
Nadisanka Rupasinghe,Ismail Guvenc +1 more
- pp 894-899
TLDR
Simulation results show that WiFi performance is more vulnerable to LTE interference, while LTE performance is degraded only slightly, however, WiFi throughput degradation is lower for TDD configurations with larger number of LTE uplink sub-frames and smaller path loss compensation factors.Abstract:
One of the effective ways to address the exponentially increasing traffic demand in mobile communication systems is to use more spectrum. Although licensed spectrum is always preferable for providing better user experience, unlicensed spectrum can be considered as an effective complement. Before moving into unlicensed spectrum, it is essential to carry out proper coexistence performance evaluations. In this paper, we analyze WiFi 802.11n and Long Term Evolution (LTE) coexistence performance considering multi-layer cell layouts through system level simulations. We consider a time division duplexing (TDD)-LTE system with an FTP traffic model for performance evaluation. Simulation results show that WiFi performance is more vulnerable to LTE interference, while LTE performance is degraded only slightly. However, WiFi throughput degradation is lower for TDD configurations with larger number of LTE uplink sub-frames and smaller path loss compensation factors.read more
Citations
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Journal ArticleDOI
Coexistence of LTE-LAA and Wi-Fi on 5 GHz With Corresponding Deployment Scenarios: A Survey
TL;DR: This paper provides a comprehensive survey of the coexistence of LTE-LAA and Wi-Fi on 5 GHz with corresponding deployment scenarios, and explores a relatively smooth technical route for solving coexistence-related problems.
Journal ArticleDOI
A Survey on Legacy and Emerging Technologies for Public Safety Communications
TL;DR: In this article, a comparative survey of legacy and the LTE-based public safety networks, and discusses the LMRS-LTE convergence as well as mission-critical push-to-talk over LTE.
Journal ArticleDOI
Licensed-Assisted Access LTE: coexistence with IEEE 802.11 and the evolution toward 5G
Amitav Mukherjee,Jung-Fu Cheng,Sorour Falahati,Havish Koorapaty,Du Ho Kang,Karaki Reem,Laetitia Falconetti,Daniel Larsson +7 more
TL;DR: A range of simulations show that fair coexistence between LAA and WiFi can be achieved, and that deployment of LAA can provide a boost in WiFi performance, and the scope of additional enhancements beyond LTE Release 13.
Proceedings ArticleDOI
Reinforcement learning for licensed-assisted access of LTE in the unlicensed spectrum
TL;DR: This paper proposes a Q-Learning based dynamic duty cycle selection technique for configuring LTE transmission gaps, so that a satisfactory throughput is maintained both for LTE and WiFi systems, and evaluates the coexistence performance of WiFi and LTE using the proposed technique.
Journal ArticleDOI
Coexistence of Wireless Technologies in the 5 GHz Bands: A Survey of Existing Solutions and a Roadmap for Future Research
TL;DR: This paper provides a comprehensive overview of the various coexistence scenarios in the 5 GHz bands, and discusses coexistence issues between a number of important wireless technologies—viz.
References
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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
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.
Next generation wireless LANs : throughput, robustness, and reliability in 802.11n, 802.11ac
Eldad Perahia,Stacey Robert J +1 more
TL;DR: This comprehensive overview describes the underlying principles, implementation details, and key enhancing features of 802.11n and is an ideal reference for designers of WLAN equipment, and network managers whose systems adopt the new standard.
Book
Next Generation Wireless LANs: Throughput, Robustness, and Reliability in 802.11n
Eldad Perahia,Robert J. Stacey +1 more
TL;DR: In this article, a comprehensive overview of IEEE 802.11n key throughput, robustness, and reliability enhancing features (such as MIMO, 40 MHz channels, and packet aggregation) is given, in addition to a clear summary of the issues surrounding legacy interoperability and coexistence.
Detect and Avoid: An Ultra-Wideband/WiMAX Coexistence Mechanism
TL;DR: In this paper, the authors describe the obstacles faced in achieving robust detection and avoidance with an on-chip implementation of basic DAA functionality, and present measurement results for operation of a single UWB device with a WiMAX system.