| 基于DCF退避机制的算法改进及其应用 |
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| 引用本文： | 张应征,朱燕.基于DCF退避机制的算法改进及其应用[J].湖南文理学院学报(自然科学版),2013(1):46-49,53. |
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| 作者姓名： | 张应征 朱燕 |
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| 作者单位： | 湖南工程职业技术学院信息工程系;华中科技大学计算机学院 |
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| 基金项目： | 湖南工程职业技术学院(GCZY11KTZ12) |
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| 摘 要： | 无线局域网络技术中采用的基本接入方式是分布式控制DCF方法，但它需要解决2个问题：一是由多个节点同时发送数据帧而出现碰撞的情况；二是随着网络总业务量的增多或出现突发状况时，急剧增大的碰撞率情况．为此，采用改进的退避机制的算法，以减少节点接入网络时冲突的方法，提高MAC协议的整体性能，并通过建立仿真子网模型予以应用测试．结果表明，这种方法提高了网络吞吐量，解决了网络拥堵问题．提高了通信效率．
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| 关 键 词： | 退避算法 无线网络 仿真建模 |
Improved algorithm based on DCF backoff mechanism and its application research |
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| ZHANG Ying-zheng,ZHU Yan.Improved algorithm based on DCF backoff mechanism and its application research[J].Journal of Hunan University of Arts and Science:Natural Science Edition,2013(1):46-49,53. |
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| Authors: | ZHANG Ying-zheng ZHU Yan |
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| Institution: | 1.Department of Information Engineering,Hunan Engineering Polytechnic,Changsha 410004,China;2.Computer College,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Wireless local area network technology used in distributed control is the basic access method of DCF, but it need to solve the two problems： one is made of many nodes at the same time send data frames and appear the situation of the collision, Second is along with the increase of total volume or network emergencies, sharp increase of collision rate. Therefore, this article studies the backoff mechanism of improved algorithm, in order to reduce the conflict when the node access network, the method of improving the performance of the MAC protocol, and by establishing the simulation model of subnet and application, the results show that this method improve the network throughput, solve the network congestion problem, improve the efficiency of communication. |
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| Keywords: | retreats algorithm wireless network simulation modeling |
| 本文献已被 CNKI 维普 等数据库收录！ |
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