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http://dx.doi.org/10.5762/KAIS.2015.16.5.3455

Access Delay Characteristics of Wi-Fi Network According to User Increase in Subway Section  

Koh, Seoung-chon (Department of Railway System, Seoul National University of Science and Technology)
Choi, Kyu-Hyoung (Department of Railway Electrical/Signaling Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.5, 2015 , pp. 3455-3461 More about this Journal
Abstract
LTE and Wi-Fi networks provide wireless communication services to passengers in subway where the number of network access fluctuates according to passenger movement. While the number of network access increase, LTE can provide stable communication service but Wi-Fi suffers temporal access delay to network. This paper analyzes the increase in access delay of Wi-Fi network according to increasing user in subway section by making mathematical modeling of Wi-Fi network and simulation study. The access delay characteristics of Wi-Fi network is measured along an subway line and the results are compared to the theoretical study. These results can be applied to the connection method to build an efficient network structure between LTE and Wi-Fi interworking network and the future introduction of LTE-R.
Keywords
Subway; Wi-Fi; LTE; Offloading; Access Delay;
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Times Cited By KSCI : 1  (Citation Analysis)
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