无线多跳网络可靠传输保障机制性能分析

发布时间：2018-01-13 23:32

本文关键词：无线多跳网络可靠传输保障机制性能分析　出处：《兵工学报》2017年11期 　论文类型：期刊论文

【摘要】：无线多跳网络通过多个中继节点进行信息传输,容易造成同一路径上节点间干扰、路径与路径间干扰、多跳误码累积等问题,使可靠性保障成为多跳数据传输的难点。针对目前无线多跳网络环境下综合考虑机制参数、业务参数与信道参数的可靠性机制性能研究不足的问题,建立上述参数的相关机制模型,分析基本参数对冗余、重传、网络编码3种多跳可靠性机制性能的影响。重点对网络编码机制的适用参数与适用环境进行建模、仿真、分析。根据无线多跳网络信道环境优化3种可靠性机制的机制参数,对比三者在不同环境下的性能。仿真结果表明:业务参数主要对网络编码机制的影响较大,在业务量大的情况下网络编码机制能够达到更优的性能;机制参数对协议的性能产生主要影响,通过信道参数对机制参数进行优化能够保证各机制在满足投递率性能的条件下达到更小的开销;网络编码、混合自动请求重传、前向纠错编码机制分别在误比特率较低、中等、偏高的水平发挥更优的性能。
[Abstract]:Wireless multi-hop networks transmit information through multiple relay nodes, which can easily cause inter-node interference on the same path, interference between paths and paths, multi-hop error code accumulation and so on. In order to make the reliability guarantee become the difficulty of multi-hop data transmission, there is insufficient research on the reliability mechanism performance of traffic parameters and channel parameters in the current wireless multi-hop network environment. The related mechanism model of the above parameters is established to analyze the effect of the basic parameters on the performance of the redundant, retransmission and network coding multi-hop reliability mechanisms. The applicable parameters and applicable environment of the network coding mechanism are mainly modeled. Simulation, analysis. Optimize the mechanism parameters of three reliability mechanisms according to the wireless multi-hop network channel environment. The simulation results show that the traffic parameters have a great influence on the network coding mechanism, and the network coding mechanism can achieve better performance under the condition of large traffic. The mechanism parameters have a major impact on the performance of the protocol. Optimizing the mechanism parameters by channel parameters can ensure that each mechanism can achieve lower overhead under the condition that the performance of the delivery rate is satisfied. Network coding, hybrid automatic request retransmission, and forward error correction coding have better performance at low bit error rate, medium bit error rate and high error rate.
【作者单位】：北京交通大学电子信息工程学院;通信网信息传输与分发技术重点实验室;
【基金】：国家自然科学基金项目(61371068) 通信网信息传输与分发技术重点实验室开放课题项目(KX162600033)
【分类号】：TN92
【正文快照】： 0引言无线多跳网络通信系统由多个无线收发设备组成,设备能够自适应地构建无中心的无线网络[1]。由于其组网快速、灵活、抗毁性强的特点,常被应用于军事作战、抢险救灾、临时通信等环境[2]。通过中继节点的转发,无线多跳网络能够达到更广的覆盖范围,同时,节点数的增多也带来了

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