| 由接收节点控制握手的一种脉冲超宽带网络MAC协议 |
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| 引用本文： | 彭炳光,卫国,朱近康.由接收节点控制握手的一种脉冲超宽带网络MAC协议[J].中国科学技术大学学报,2007,37(9):1151-1154. |
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| 作者姓名： | 彭炳光 卫国 朱近康 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系,安徽合肥,230027 |
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| 基金项目： | 国家自然科学基金;中国科学院知识创新工程项目 |
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| 摘 要： | 脉冲超宽带系统通过发送宽度极窄的脉冲进行通信,因没有载波调制,所以基于载波侦听方式的MAC协议不适用于IR-UWB系统.针对常用的UWB MACAW MAC协议在网络负荷较大时RTS/CTS握手失败概率大的问题,提出了一种先由接收节点传送FI帧指示其处于空闲状态,然后发送节点再进行握手的UWB-RI MAC协议,以增大握手成功的概率.通过给出的UWB-RIMAC协议数据收发的详细流程,分析了FI帧广播间隔的取值,说明其对QoS的支持;最后仿真比较了UWB-RI MAC和UWB MACAW MAC的性能.
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| 关 键 词： | RTS/CTS握手 吞吐量 |
| 文章编号： | 0253-2778（2007）09-1151-04 |
| 修稿时间： | 2007-04-25 |
A MAC for IR-UWB networks with receiver controlled handshake |
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| PENG Bing-guang,WEI Guo,ZHU Jin-kang.A MAC for IR-UWB networks with receiver controlled handshake[J].Journal of University of Science and Technology of China,2007,37(9):1151-1154. |
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| Authors: | PENG Bing-guang WEI Guo ZHU Jin-kang |
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| Institution: | Department of Electronic Engineering and Information Science, USTC , Hefei 230027, China |
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| Abstract: | An IR-UWB system communicates by transmitting very narrow pulses.Without use of carrier modulation,MAC protocol based on carrier sensing can not be applied to IR-UWB system.Through analyzing the cause of RTS/CTS handshake failure of UWB MACAW MAC,UWB-RI MAC with receiver controlled handshake was proposed.In UWB-RI MAC,the receiver sends FI frame to indicate that it is free to receive RTS,and then the sender transmits RTS to start RTS/CTS handshake.Based on detailed working process of UWB-RI MAC,FI frame broadcast interval was analyzed and the support for QoS was explained.Finally,the performance simulation and comparison of UWB-RI MAC and UWB MACAW MAC were given. |
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| Keywords: | IR-UWB MACAW UWB-RI MAC |
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