| 一种用于AdHoc网络的协同MAC协议 |
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| 引用本文： | 严培军,葛松虎,马东堂.一种用于AdHoc网络的协同MAC协议[J].现代电子技术,2011,34(3):49-52,55. |
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| 作者姓名： | 严培军 葛松虎 马东堂 |
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| 作者单位： | 国防科学技术大学,电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 基于IEEE802．11 DCF模型，利用协同分集技术，提出了一种适用于AdHoc网络的协同MAC协议。此协议在目的节点实时选择传输模式和协同节点，可有效减小节点移动和信道变化对网络性能产生的影响。同时，利用分集技术，对源节点和协同节点的数据信号进行最大比合并（MRC），可有效提高系统的可靠性。仿真结果表明，在文中的仿真条件下，和传统IEEE802．11DCF协议相比，该协议在系统分组递交率和延迟性能上分别提高了20％和50％。
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| 关 键 词： | 协同 MAC Ad Hoc网络 OPNET软件 |
Cooperative MAC Protocol for Ad Hoc Network |
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| YAN Pei-jun,GE Song-hu,MA Dong-tang.Cooperative MAC Protocol for Ad Hoc Network[J].Modern Electronic Technique,2011,34(3):49-52,55. |
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| Authors: | YAN Pei-jun GE Song-hu MA Dong-tang |
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| Affiliation: | YAN Pei-jun,GE Song-hu,MA Dong-tang(Department of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | According to the IEEE 802. 11 DCF model, a cooperative MAC protocol for Ad Hoc network is proposed by using cooperative diversity technique. In this protocol, in order to validly decrease the influence on network performance from node＇s remotion and channel＇s change, the destination node chooses transmission mode and cooperative node instantaneously. At the same time, combining the signal from the source node and the signal from the cooperative node in a maximum-ratio combining （MRC） technique, the reliability of system can be improved. The simulation results demonstrate that the through-put and delay performance of this protocol increased 20 % and 50 % respectively compared with the conventional IEEE 802.11 DCF protocol on the proposed Condition. |
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| Keywords: | MAC |
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