Harmonious Coexistence and Efficient Spectrum Sharing for LTE-U and Wi-Fi

Jiang, Zhefeng; Mao, Shiwen

doi:10.1109/mass.2017.69

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…The coexistence of LAA and Wi-Fi is modeled in [20], [21], [22] based on widely used Bianchi model [6]. Further, the coexistence of LTE-U and Wi-Fi when all nodes can hear each other is modeled and studied in [8], [9]. But, in a general scenario, nodes are deployed spatially and all the nodes are not always inside EDT of each other.…”

Section: Related Workmentioning

confidence: 99%

“…To validate the proposed model and study the coexistence between LTE-U and Wi-Fi, we developed a system level simulator for Wi-Fi-LTE-U networks using MATLAB. We first validate our MATLAB simulator with the mathematical models of Wi-Fi-Wi-Fi [6] and Wi-Fi-LTE-U [8] nodes where all nodes can sense presence of all others. Further, the available model for Wi-Fi-Wi-Fi [7] for spatially distributed Wi-Fi nodes is also used to validate the MATLAB simulator.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…Fig. 7a shows a comparison of Wi-Fi analysis presented in [6] and Wi-Fi-LTE-U analysis presented in [8] with our MATLAB simulator. In Fig.…”

Section: A Simulator Validationmentioning

confidence: 99%

“…The recent inclusion of LTE-U in unlicensed spectrum makes throughput estimation of Wi-Fi more challenging. In [8] and [9], the authors modeled throughputs of LTE-U and Wi-Fi networks in the coexistence scenario where each node can sense all the other nodes on the channel (i.e., both the LTE-U and Wi-Fi nodes are inside Energy Detection Threshold (EDT) range of each other). But, the case when the nodes can sense the presence of only a subset of nodes in the network makes throughput estimation more challenging.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modeling and Performance Analysis of Spatially Distributed LTE-U and Wi-Fi Networks

Baswade¹,

Reddy²,

Franklin³

et al. 2019

Preprint

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To access an unlicensed channel Wi-Fi follows Listen Before Talk (LBT) mechanism whereas LTE-U adopts ON-OFF duty cycled mechanism to fairly share the channel with Wi-Fi. These contrasting mechanisms result in quite different performance for Wi-Fi and LTE-U based on their relative deployment and density in the environment. In this work, we present an analytical model for characterization of achievable throughputs of Wi-Fi and LTE-U networks in spatially distributed high-density scenarios. The proposed model is used to study how LTE-U and Wi-Fi coexist with each other in different deployment scenarios. Our extensive simulation results prove it to be a reliable model for estimating throughput of both Wi-Fi and LTE-U. We record a very good accuracy in throughput estimation and the mean normalized error is less than 1% for 40-node scenario in which 50% of nodes belong to each of Wi-Fi and LTE-U. Finally, we use the analytical model to conduct coexistence studies of LTE-U and Wi-Fi.

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