Modeling the coexistence of LTE and WiFi heterogeneous networks in dense deployment scenarios
Shweta Sagari,Ivan Seskar,Dipankar Raychaudhuri +2 more
- pp 2301-2306
TLDR
A analytical framework for interference characterization of WiFi and LTE for dense deployment scenarios with spatially overlapping coverage is provided and results are presented showing 4-5x gains in system capacity over comparable no coordination cases.Abstract:
Rapid increases in mobile data demand and inherently limited RF spectrum motivate the use of dynamic spectrum sharing between different radio technologies such as WiFi and LTE, most notably in small cell (HetNet) scenarios. This paper provides a analytical framework for interference characterization of WiFi and LTE for dense deployment scenarios with spatially overlapping coverage. The first model developed is for single LTE and single WiFi access points separated by a specified distance. Results obtained for that model demonstrate the fact that WiFi is significantly degraded by a nearby LTE system, while LTE degradation is minimal as long as the WiFi system is within carrier sense range. A second model for multiple WiFi and multiple LTE systems further demonstrates the fact that LTE causes significant degradation to WiFi and that overall system throughput first increases and then decreases with growing density. Intra- and inter- system channel coordination schemes are considered as a means of improving system performance, and results are presented showing 4-5x gains in system capacity over comparable no coordination cases.read more
Citations
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Coordinated Dynamic Spectrum Management of LTE-U and Wi-Fi Networks
TL;DR: In this paper, the authors investigated the coexistence of Wi-Fi and LTE in emerging unlicensed frequency bands which are intended to accommodate multiple radio access technologies and showed that both networks cause significant interference to each other and that the degradation is dependent on power levels and physical topology.
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TL;DR: Numerical results are presented showing significant gains in both Wi-Fi and LTE performance with the proposed inter-network coordination approach, as well as possible techniques for enabling improved co-existence.
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Analyzing the availability and performance of an e-health system integrated with edge, fog and cloud infrastructures
Guto Leoni Santos,Patricia Takako Endo,Patricia Takako Endo,Matheus Felipe Ferreira da Silva Lisboa Tigre,Leylane Graziele Ferreira da Silva,Djamel Sadok,Judith Kelner,Theo Lynn +7 more
TL;DR: An e-health monitoring architecture based on sensors that relies on cloud and fog infrastructures to handle and store patient data is proposed and it is identified that the sensors and fog devices are the components that have the most significant impact on the availability of the e- health monitoring system, as a whole.
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On a fair coexistence of LTE and Wi-Fi in the unlicensed spectrum: A Survey
TL;DR: This paper presents an overview of the work appeared in the literature analyzing the impact of LTE on the performance of Wi-Fi and proposing solutions to mitigate such an impact and describes the main solutions that are currently being developed by standardization bodies and telecom industry.
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