On the throughput analysis of LTE and WiFi in unlicensed band

In this paper, the co-channel performance of large scale deployment of LTE in Unlicensed (LTE-U) band and WiFi is studied using stochastic geometry. Analytical expressions of LTE-U throughput in presence of WiFi are presented and are partly validated by the simulation results. The LTE-U Low Power Nodes (LPNs) are deployed as Poisson Point Process (PPP), and, the WiFi transmissions are modeled as hardcore Matérn point process. Using this analytical approach the impact of various parameters such as sensing threshold and transmission power on the co-existence of LTE-U and WiFi is studied.

[1]  François Baccelli,et al.  Stochastic geometry and wireless networks , 2009 .

[2]  Guidelines for evaluation of radio interface technologies for IMT-Advanced , 2008 .

[3]  Sayantan Choudhury,et al.  Performance Evaluation of LTE and Wi-Fi Coexistence in Unlicensed Bands , 2013, 2013 IEEE 77th Vehicular Technology Conference (VTC Spring).

[4]  Mikko A. Uusitalo,et al.  System performance of LTE and IEEE 802.11 coexisting on a shared frequency band , 2013, 2013 IEEE Wireless Communications and Networking Conference (WCNC).

[5]  Siyi Wang,et al.  Mobile Crowd-Sensing Wireless Activity with Measured Interference Power , 2013, IEEE Wireless Communications Letters.

[6]  François Baccelli,et al.  A Stochastic Geometry Analysis of Dense IEEE 802.11 Networks , 2007, IEEE INFOCOM 2007 - 26th IEEE International Conference on Computer Communications.

[7]  Joachim Sachs,et al.  License-exempt LTE systems for secondary spectrum usage: Scenarios and first assessment , 2011, 2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN).

[8]  Jeffrey G. Andrews,et al.  A Tractable Approach to Coverage and Rate in Cellular Networks , 2010, IEEE Transactions on Communications.