| Ad Hoc网络中的TCP不稳定性分析与改善 |
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| 引用本文： | 苏爱国,张光昭.Ad Hoc网络中的TCP不稳定性分析与改善[J].电路与系统学报,2005,10(5):114-119. |
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| 作者姓名： | 苏爱国 张光昭 |
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| 作者单位： | 中山大学电子与通信工程系,广东广州510275 |
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| 摘 要： | 文章介绍了基于802.11的Ad Hoc多跳网络存在的隐藏节点问题,应用ns2仿真分析了由隐藏节点等导致的TCP不稳定性现象,并提出了TCP参数优化法和MAC层协议优化来改善不稳定性,在MAC层协议优化工作方面提出了一种新的方案-DWDB算法,对基本802.11 MAC协议进行了退避算法和重传机制的修改.仿真结果表明该方案能够在提高Ad Hoc网络吞吐性能的基础上,有效地解决不稳定性问题.
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| 关 键 词： | 不稳定性 |
| 文章编号： | 1007-0249（2005）05-0114-06 |
| 收稿时间： | 2003-08-19 |
| 修稿时间： | 2003-10-21 |
Analysis and improvement of the instability on Ad Hoc networks |
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| SU Ai-guo, ZHANG Guang-zhao.Analysis and improvement of the instability on Ad Hoc networks[J].Journal of Circuits and Systems,2005,10(5):114-119. |
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| Authors: | SU Ai-guo ZHANG Guang-zhao |
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| Abstract: | In this paper, it analyzes the instability problem of TCP connections, and proposes the optimization of TCP parameters and the improvement of 802.11 protocols to solve this problems. The DWDB (Double Windows Dynamic Backoff ) mechanism which just needs to modify the exponential back-off algorithm and retransmission scheme in 802.11 MAC sub layer is proposed. And the simulation results show that the problems mentioned above have been solved to great extend after using the new mechanism. |
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| Keywords: | Ad Hoc TCP DWDB 802 11 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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