IMT-2000 has attracted strong attention as the Next Generation Mobile Communication System. That can provide high-bit-rate data communication service, so that a great number of packets conveyed by TCP will be transmitted over a wireless link. W-CDMA standardized in 3GPP (standardizing IMT-2000) allows dynamic allocation of transmission rates to flows over a wireless link in response to changing link condition for each flow, which is thought to be essential for next generation mobile communication system. Therefore, this paper studies the characteristics of the dynamic allocation scheme when TCP flows share a wireless link, in particular by focusing on the throughput performance of those TCP flows.
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