Modeling of Wi-Fi IEEE 802.11ac Offloading Performance for 1000x Capacity Expansion of LTE-Advanced

Liang Hu, Maria Laura Luque Sanchez, Michal Maternia, István Kovács, Benny Vejlgaard, Preben Mogensen, Hidekazu Taoka

Research output: Contribution to journalConference article in JournalResearchpeer-review

7 Citations (Scopus)

Abstract

This paper studies indoor Wi-Fi IEEE 802.11ac deployment as a capacity expansion solution of LTE-A (Long Term Evolution-Advanced) network to achieve 1000 times more capacity increase. The objective is to understand how the latest Wi-Fi 802.11ac helps the LTE-A network to accommodate future 1000 times more traffic demand. For the performance evaluation of Wi-Fi, we propose a novel analytical throughput model that captures both key 802.11ac enhancements and multi-cell interference. We provide quantitative evaluation of large-scale indoor Wi-Fi 802.11ac deployment in a real urban scenario by extensive simulations. We conclude that the 1000 times more network capacity can indeed be achieved by indoor Wi-Fi 802.11ac deployment: in particular, when utilizing only the existing IMT license spectrum at LTE-A network, a Wi-Fi density of approximately 1500 access points/km2 (400 Wi-Fi per macro site) is required; With the availability of new 3.5GHz spectrum, 500 Wi-Fi access points/km2 (100 Wi-Fi per macro site) is required. Moreover, we conclude that, compared to the alternative LTE-A femto cell solution, Wi-Fi has the big advantage of saving the new spectrum resource at 3.5 GHz by utilizing its unlicensed spectrum at 5GHz.
Original languageEnglish
JournalIEEE Vehicular Technology Conference. Proceedings
Pages (from-to)1 - 6
ISSN1090-3038
DOIs
Publication statusPublished - 2013
Event2013 IEEE 78th Vehicular Technology Conference: VTC2013-Fall - Las Vegas, United States
Duration: 2 Sep 20135 Sep 2013

Conference

Conference2013 IEEE 78th Vehicular Technology Conference: VTC2013-Fall
CountryUnited States
CityLas Vegas
Period02/09/201305/09/2013

Keywords

  • wifi, offloading, 1000x, growth, capacity, evoluation, LTE, advanced, 802.11ac, expansion

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