| 无线通信网络DQRAP多址接入协议的改进 |
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| 引用本文： | 李寅博,刘锋.无线通信网络DQRAP多址接入协议的改进[J].航空电子技术,2006,37(3):7-12. |
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| 作者姓名： | 李寅博 刘锋 |
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| 作者单位： | 北京航空航天大学新航行系统民航重点实验室,北京,100083 |
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| 摘 要： | 随着DQRAP协议输入率的逐渐增加,冲突解决频繁,从而出现了未传数据的空数据时隙(DS),使数据包等待时间增加、时延增大等问题。本文提出了一种改进的DQRAP协议,在该协议中,取消了不传输数据的DS,只有在控制微时隙(CMS)里传送请求,由此改变了原协议的时隙划分方式,缩短了数据时延,提高了协议的性能。仿真表明,在信道负荷的范围内(即输入率0到1之间),改进的DQRAP协议随着输入率增加,时延特性有明显的改善,而吞吐率几乎保持不变。
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| 关 键 词： | 无线通信 多址接入协议 MAC DQRAP |
| 文章编号： | 1006-141X(2006)03-0007-06 |
| 修稿时间： | 2006年7月18日 |
An Improved DQRAP MAC Protocol in Wireless Communication Network |
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| LI Yin-bo,LIU Feng.An Improved DQRAP MAC Protocol in Wireless Communication Network[J].Avionics Technology,2006,37(3):7-12. |
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| Authors: | LI Yin-bo LIU Feng |
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| Abstract: | In this paper an improved DQRAP is proposed to solve the problem of non-transmitted and empty data slot (DS),with due to the gradual increase of input rate and the frequent collision resolution,consequently the waiting time of data packet has become long and the delay increasing.In the improved DQRAP,the manner of slot division is changed and the empty DS has been canceled,only requests are transmitted in control minislot (CMS),so that the data delay is reduced and the performance of the protocol is improved.Simulation results show that within the bound of channel loads (i.e.,the input rate is between 0-1),because of the increase of input rate,the delay performance of improved DQRAP is obviously augmented,but the throughput remains almost unchanged. |
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| Keywords: | wireless communication multiple access protocol MAC DQRAP |
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