基于指示信息的带碰撞避免的载波侦听多址技术
发布时间：2018-10-30 09:10
【摘要】：本文从现有协议中DCF机制的基本和RTS/CTS两种工作模式出发,提出一种基于指示信息的带碰撞避免的载波侦听多址技术,根据不同工作模式分为三种改进模式。针对两种对数据帧长适应性较好的改进工作模式,即改进的基本模式和改进的RTS/CTS模式一,本文提出在整个网络数据传输速率固定的条件下,可设定数据帧长阈值,根据传输数据帧长与阈值关系实现两种改进模式的动态切换,最大化地缩短碰撞处理时间,降低随机回退产生的额外系统开销。NS2仿真结果表明,基于指示信息的带碰撞避免的载波侦听多址技术相比于现有的DCF机制具有更好的系统性能。
[Abstract]:In this paper, a carrier listening multiple access technique with collision avoidance based on indication information is proposed based on the basic of DCF mechanism and the two working modes of RTS/CTS, which can be divided into three improved modes according to different working modes. In view of two improved working modes with good adaptability to data frame length, that is, the improved basic mode and the improved RTS/CTS mode, this paper proposes that the threshold of data frame length can be set under the condition of fixed data transmission rate in the whole network. According to the relationship between data frame length and threshold, the dynamic switching of two improved modes is realized, which maximizes the collision processing time and reduces the additional system overhead caused by random fallback. The NS2 simulation results show that, Carrier listening multiple access with collision avoidance based on indicator information has better system performance than the existing DCF mechanism.
【作者单位】： 东南大学信息科学与工程学院;桂林电子科技大学认知无线电与信息处理教育部重点实验室;
【基金】：国家863计划课题(2015AA01A703) 国家自然科学基金(61471120,61372101) 中央高校基本科研基金(2242016K40099) 深圳战略性新兴产业发展基金(ZDSYS20140509094955257) 桂林电子科技大学“认知无线电与信息处理”教育部重点实验室开放基金(CRKL160203)
【分类号】：TN92
本文编号：2299572
[Abstract]:In this paper, a carrier listening multiple access technique with collision avoidance based on indication information is proposed based on the basic of DCF mechanism and the two working modes of RTS/CTS, which can be divided into three improved modes according to different working modes. In view of two improved working modes with good adaptability to data frame length, that is, the improved basic mode and the improved RTS/CTS mode, this paper proposes that the threshold of data frame length can be set under the condition of fixed data transmission rate in the whole network. According to the relationship between data frame length and threshold, the dynamic switching of two improved modes is realized, which maximizes the collision processing time and reduces the additional system overhead caused by random fallback. The NS2 simulation results show that, Carrier listening multiple access with collision avoidance based on indicator information has better system performance than the existing DCF mechanism.
【作者单位】： 东南大学信息科学与工程学院;桂林电子科技大学认知无线电与信息处理教育部重点实验室;
【基金】：国家863计划课题(2015AA01A703) 国家自然科学基金(61471120,61372101) 中央高校基本科研基金(2242016K40099) 深圳战略性新兴产业发展基金(ZDSYS20140509094955257) 桂林电子科技大学“认知无线电与信息处理”教育部重点实验室开放基金(CRKL160203)
【分类号】：TN92
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