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WorldCIST'19 - 7th World Conference on Information Systems and Technologies

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Analysis of Performance Degradation of TCP Reno over WLAN Caused by Access Point Scanning

In wireless LANs, terminals regularly perform the access point scan-ning in order to obtain up-to-data information on access points located nearby. During the access point scanning, a terminal sends a packet with the power management bit set to suppress the data transfer, and this operation sometimes causes packet losses in the terminal. If TCP Reno is used as a congestion control algorithm and the transmission delay is large, the increase of the congestion window size is sup-pressed and the performance may be deteriorated. This paper shows an experimental result of TCP Reno with access point scanning and proposes a method to prevent the throughput degradation.

Toshihiko Kato
University of Electro-Communications
Japan

Sota Tasaki
University of Electro-Communications
Japan

Ryo Yamamoto
University of Electro-Communications
Japan

Satoshi Ohzahata
University of Electro-Communications
Japan

 


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