| Improving TCP Performance over Wireless Links Using Link-Layer Retransmission and Explicit Loss Notification |
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| 作者姓名： | Zhou Zhizhao & Han Zhengzhi College of Electronic and Information Engineering Shanghai Jiaotong University Shanghai P. R. China |
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| 作者单位： | Zhou Zhizhao & Han Zhengzhi College of Electronic and Information Engineering，Shanghai Jiaotong University，Shanghai 200030，P. R. China |
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| 基金项目： | National Natural Science Foundation of China(69874025). |
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| 摘 要： | In order to support the mobility of computers during communication, the transport control protocol (TCP) connections between fixed host and mobile host often traverse wired and wireless networks, and the recovery of the losses due to wireless transmission error is much different from congestion control. This paper analyzes the interaction between TCP and link layer retransmission scheme when the correlated packet are losses handled, indicates that a higher value of the maximum number of successive link layer timeout retransmissions has an adverse effect on TCP ability to perform congestion control rapidly. To achieve a better TCP performance, the paper proposes a strategy combining link-layer selective-reject automatic repeat request (ARQ) with explicit loss notification mechanism, which can respond to congestion quickly while keeping wireless link more reliable, and make TCP react to the different packet losses more suitably.
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Improving TCP Performance over Wireless Links Using Link-Layer Retransmission and Explicit Loss Notification |
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| Zhou Zhizhao & Han Zhengzhi College of Electronic and Information Engineering,Shanghai Jiaotong University,Shanghai ,P. R. China.Improving TCP Performance over Wireless Links Using Link-Layer Retransmission and Explicit Loss Notification[J].Journal of Systems Engineering and Electronics,2002,13(4). |
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| Authors: | Zhou Zhizhao Han Zhengzhi |
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| Abstract: | In order to support the mobility of computers during communication, the transport control protocol (TCP) connections between fixed host and mobile host often traverse wired and wireless networks, and the recovery of the losses due to wireless transmission error is much different from congestion control. This paper analyzes the interaction between TCP and link layer retransmission scheme when the correlated packet are losses handled, indicates that a higher value of the maximum number of successive link layer timeout retransmissions has an adverse effect on TCP ability to perform congestion control rapidly. To achieve a better TCP performance, the paper proposes a strategy combining link-layer selective-reject automatic repeat request (ARQ) with explicit loss notification mechanism, which can respond to congestion quickly while keeping wireless link more reliable, and make TCP react to the different packet losses more suitably. |
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| Keywords: | Link-layer selective-reject ARQ Retransmission timeout value Maximum number of successive link layer timeout retransmissions Explicit loss notification |
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