基于Relay的高密度无线局域网组网方案研究
发布时间：2018-11-14 15:47
【摘要】：随着智能电网、智能医疗、环境监测、安防监控等适用于物联网的无线局域网业务,以及增强局部范围内人与人之间沟通的新型近域互联的快速发展,无线局域网需要更高密度、更大规模的部署,即能够支持更多用户,更大的覆盖范围,更灵活的组网方案。其中智能电网等都要求无线局域网能够支持单个小区范围内6000个节点的短分组、突发业务的传输,所以,有效灵活的组网方案是保证系统高吞吐量以及高效无线资源利用率的关键。本文针对高密度无线局域网的组网方案问题,进行了如下研究：1.本文针对高密度无线局域网中边缘节点速率过低以及密集AP中同频干扰严重而导致整个网络吞吐量过低问题进行了深入分析,提出了用于无线局域网中边缘节点多跳路径和信道选择方法,即以其他工作站点作为中继节点,连接到接入点时,多跳路径和信道选择的方法,以满足边缘工作站点的速率需求,防止边缘工作站点对网络资源的低效利用,提高频谱利用率和网络的性能。2.在边缘节点完成多跳路径和信道选择的基础上,本文针对高密度无线局域网中的802.11协议性能进行了分析,并仿真指出在支持6000个节点的单小区中采用原有无线局域网协议存在网络吞吐量过低的问题。在多跳组网基础上,提出了基于Relay的高密度无线局域网组网方案,通过改变微小区个数来比较不同微小区个数时系统吞吐量的变化,最终选择的组网方案使得网络吞吐量达到最大,系统性能达到最优。3.本文通过仿真验证了该组网方案的性能,结果表明该组网方案大大提高了网络吞吐量,并一定程度上减小了节点能耗。最后通过搭建Linux关键技术演示平台,用QT对组网方案的可行性和有效性进行了验证。
[Abstract]:With the rapid development of smart grid, smart medical treatment, environmental monitoring, security monitoring and other WLAN services suitable for the Internet of things, as well as the rapid development of a new type of near-domain interconnection that enhances interpersonal communication in local areas, WLAN needs higher density and larger deployment, that is, it can support more users, wider coverage, and more flexible networking schemes. The smart grid and so on require WLAN to be able to support the transmission of short packets and burst services of 6,000 nodes in a single cell, so, Effective and flexible networking scheme is the key to ensure high throughput and efficient utilization of wireless resources. In this paper, the scheme of high density wireless local area network is studied as follows: 1. In this paper, the low rate of edge nodes in high density WLAN and the serious co-frequency interference in dense AP cause the problem of low throughput of the whole network. In this paper, a multi-hop path and channel selection method for edge nodes in WLAN is proposed, that is, when other work stations are used as relay nodes to connect to access points, multi-hop paths and channels are selected. In order to meet the rate demand of the edge work site, prevent the low efficiency utilization of the network resource, improve the spectrum efficiency and the network performance. 2. Based on the completion of multi-hop path and channel selection by edge nodes, the performance of 802.11 protocol in high density wireless LAN is analyzed in this paper. The simulation results show that the network throughput is too low by using the original WLAN protocol in a single cell with 6000 nodes. On the basis of multi-hop networking, a scheme of high-density WLAN networking based on Relay is proposed. By changing the number of micro-areas, the system throughput is compared when the number of micro-areas is different. The final networking scheme makes the network throughput reach the maximum, and the system performance reaches the optimum. 3. 3. The performance of the scheme is verified by simulation in this paper. The results show that the scheme greatly improves the network throughput and reduces the node energy consumption to a certain extent. Finally, the feasibility and effectiveness of the scheme are verified by setting up the demonstration platform of Linux key technology and using QT.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN925.93
本文编号：2331600
[Abstract]:With the rapid development of smart grid, smart medical treatment, environmental monitoring, security monitoring and other WLAN services suitable for the Internet of things, as well as the rapid development of a new type of near-domain interconnection that enhances interpersonal communication in local areas, WLAN needs higher density and larger deployment, that is, it can support more users, wider coverage, and more flexible networking schemes. The smart grid and so on require WLAN to be able to support the transmission of short packets and burst services of 6,000 nodes in a single cell, so, Effective and flexible networking scheme is the key to ensure high throughput and efficient utilization of wireless resources. In this paper, the scheme of high density wireless local area network is studied as follows: 1. In this paper, the low rate of edge nodes in high density WLAN and the serious co-frequency interference in dense AP cause the problem of low throughput of the whole network. In this paper, a multi-hop path and channel selection method for edge nodes in WLAN is proposed, that is, when other work stations are used as relay nodes to connect to access points, multi-hop paths and channels are selected. In order to meet the rate demand of the edge work site, prevent the low efficiency utilization of the network resource, improve the spectrum efficiency and the network performance. 2. Based on the completion of multi-hop path and channel selection by edge nodes, the performance of 802.11 protocol in high density wireless LAN is analyzed in this paper. The simulation results show that the network throughput is too low by using the original WLAN protocol in a single cell with 6000 nodes. On the basis of multi-hop networking, a scheme of high-density WLAN networking based on Relay is proposed. By changing the number of micro-areas, the system throughput is compared when the number of micro-areas is different. The final networking scheme makes the network throughput reach the maximum, and the system performance reaches the optimum. 3. 3. The performance of the scheme is verified by simulation in this paper. The results show that the scheme greatly improves the network throughput and reduces the node energy consumption to a certain extent. Finally, the feasibility and effectiveness of the scheme are verified by setting up the demonstration platform of Linux key technology and using QT.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN925.93
【参考文献】
相关期刊论文 前1条
1 陈海明;崔莉;谢开斌;;物联网体系结构与实现方法的比较研究[J];计算机学报;2013年01期
，本文编号：2331600
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