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In this paper, the authors propose a dynamic OFDMA based subcarrier/power allocation which aims to protect the newly established TCP connections. The proposed allocation utilizes an estimation of the current congestion window of TCP connections to allocate resources so that vulnerable flows with small congestion windows avoid entering packet recovery via retransmission time out. In addition, for the long-lived TCP flows, the theoretical TCP throughput which can be accomplished in their end-to-end path is used as their desired achievable data rate on wireless link. Such a technique can be of significant importance since due to its popularity, TCP is commonly used over the broadband wireless networks.
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