Full Program »
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.