Today, IEEE 802.11 Wireless LAN (WLAN) is a prevailing solution for the wireless Internet access while Transport Control Protocol (TCP) is the dominant transport protocol in the Internet. It is known that, in the infrastructure WLAN with multiple long-lived TCP flow stations, the actual number of contending TCP stations is limited to a small number, and the aggregated TCP throughput is basically independent of the total number of TCP stations. It is due to the behavior of the TCP flow control in the infrastructure WLAN, where the downlink (i.e., Access Point-to-stations) is the bottleneck link.
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