Design of TCP Throughput Optimization in Wireless Environment
Date Issued
2004
Date
2004
Author(s)
Chiu, Yung-Kai
DOI
zh-TW
Abstract
With the emergence of wireless technologies, many relevant issues come along with it. Because of the essential differences between the characteristic of wired and wireless network, some traditional protocols need to be reviewed in more detail. TCP is particularly important among these. The main problem is that the congestion control mechanism in the design of TCP deems all packet losses as the result of the congestion. But, in fact, the error packet loss during communication comes from the high error rate of wireless environment. Whenever the TCP sender receives a loss event, it tends to conclude that the packet loss as a kind of congestion packet loss which comes from congestion, and tries to reduce the congestion window size, and therefore reduce the throughput.
In this thesis, we propose an algorithms to optimize the TCP throughput in wireless environment. We define our problem as follow: “In a wireless environment, how to optimize the throughput of TCP Reno and TCP New Reno downstream flow by modifying the wireless AP only.”
In the last part of our thesis, we will utilize the NS2 for system experiments verification and comparison, and discuss, conclude our contributions along with further works.
Subjects
TCP New Reno
TCP Reno
壅塞控制
Freeze-TCP
無線網路
802.11
Snoop
Wireless Network
Congestion Control
Type
other
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