Analysis of Performance Degradation of TCP Reno over WLAN Caused by Access Point Scanning
説明
In wireless LANs, terminals regularly perform the access point scanning 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 suppressed 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.