| 基于误码丢包率监测的无线TCP改进 |
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| 引用本文： | 胡晗. 基于误码丢包率监测的无线TCP改进[J]. 计算机应用, 2011, 31(10): 2657-2659. DOI: 10.3724/SP.J.1087.2011.02657 |
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| 作者姓名： | 胡晗 |
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| 作者单位： | 襄樊学院 物理与电子工程学院,湖北 襄樊 441053 |
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| 摘 要： | 针对无线环境下TCP错误调用拥塞控制算法致使性能下降的情况,提出一种基于误码丢包率监测的无线TCP改进方法。利用显式拥塞通知的路由器配合区分分组丢失性质,在数据发送端采用实时误码丢包率监测,并根据监测结果调整TCP段尺寸。仿真结果表明,改进后的TCP吞吐量在误码率为1E-4时超过TCP_SACK和TCP_Reno近1倍。
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| 关 键 词： | 无线TCP 拥塞控制 显式拥塞通知 误码丢包率 TCP段尺寸 |
| 收稿时间： | 2011-04-19 |
| 修稿时间： | 2011-06-04 |
Improvement of wireless TCP based on monitoring error packet loss rate |
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| HU Han. Improvement of wireless TCP based on monitoring error packet loss rate[J]. Journal of Computer Applications, 2011, 31(10): 2657-2659. DOI: 10.3724/SP.J.1087.2011.02657 |
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| Authors: | HU Han |
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| Affiliation: | School of Physics and Electronic Engineering, Xiangfan University, Xiangfan Hubei 441053, China |
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| Abstract: | In wireless environment, TCP erroneously responds to all losses by invoking congestion control algorithm, which results in degraded end-to-end performance. Concerning this problem, this paper proposed a method of wireless TCP based on monitoring the packet loss rate due to bit error in real-time. The data sender cooperated with the router configured with the function of explicit congestion notification to distinguish the characteristics of packet losses; at the same time, the sender took advantage of the monitor result to adjust the TCP segment size. The simulation results show that the throughput of modified of TCP outperforms TCP_SACK and TCP_Reno by 100% approximately when the bit error rate is 1E-4. |
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| Keywords: | wireless TCP congestion control Explicit Congestion Notification (ECN) error packet loss rate TCP segment size |
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