| 基于双忙音的无冲突多址接入协议 |
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| 引用本文： | 范宏伟,杨宏钢.基于双忙音的无冲突多址接入协议[J].电子科技,2005(2):21-25. |
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| 作者姓名： | 范宏伟 杨宏钢 |
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| 作者单位： | 西安电子科技大学,通信工程学院,陕西,西安,710071 |
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| 摘 要： | 在Ad Hoc网络中,隐终端和暴露终端的存在严重影响了网络的通信能力.文中详细讨论了隐终端和暴露终端问题.在此基础上,介绍一种新的可完全避免分组冲突的MAC层协议--双忙音多址接入(DBTMA)协议.该协议采用RTS/CTS对话机制来预约信道,通过引入两个窄带带外忙音信号来避免分组间冲突,彻底解决了隐终端和暴露终端问题,提高了网络的吞吐量.
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| 关 键 词： | Ad Hoc网络 隐终端 暴露终端 忙音 |
| 修稿时间： | 2004年9月21日 |
A Collision-free Multiple Access Protocol with a Dual Busy Tone |
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| Fan Hongwei,Yang Honggang.A Collision-free Multiple Access Protocol with a Dual Busy Tone[J].Electronic Science and Technology,2005(2):21-25. |
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| Authors: | Fan Hongwei Yang Honggang |
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| Abstract: | In Ad Hoc networks, the hidden- and exposed-terminal problems can severely reduce the network capacity on the MAC layer. Thus, a detailed discussion of these problems is provided in this paper. Also introduced is the Dual Busy Tone Multiple Access(DBTMA), a new collision-free MAC scheme. In DBTMA, the RTS/CTS dialogue is used to reserve channels. In addition, two narrow-bandwidth, out-of-band busy tones are employed to eliminate collisions between the RTS/CTS control packets and DATA packet transmissions. This scheme completely solves the hidden- and the exposed-terminal problems, increasing the throughput. |
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| Keywords: | DBTMA |
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