下一代超高速无线局域网上行链路能效研究与仿真

发布时间：2018-05-05 21:39

本文选题：WLAN + 载波聚合　；参考：《电子科技大学》2014年硕士论文

【摘要】：无线局域网以其独特的不可替代性优势成为当前移动通信的重要组成部分。此外,随着人们对WLAN提出更高的速率要求以及对多种Qo S需求的多媒体业务,使得下一代超高速无线局域网势必向着较高Qo S保证和支持多宽带能力发展。本课题也以下一代高速WLAN技术(NUHT)为背景下的研究。对无线局域网的研究大都是考虑在一定的资源分配情况下,获得系统吞吐量的最大化,并且对于容量较高的无线链路,为了满足不断增加的服务质量需求,用户设备的能量消耗也会变得很大。然而,相比之下电池的容量相对于无线局域网速率的提升要滞后很多。此外,在上行链路系统中用户传输的电力消耗在无线功率预算中占据主导地位。因此,在绿色通信网络中,除了频谱效率和吞吐量外,能源效率已经成为未来无线通信的主流趋势。本文的主要研究内容也是基于下一代超高速无线局域网下的节能通信。创新性工作主要是在基于基本的联合载波聚合(JC)和独立载波聚合(IC)基础之上,设计了动态载波聚合(DCA)机制,系统模型为上行链路。此外,由于在不同的应用场景中,发射功率与系统配置和信道质量相互关联,并且每个成员载波(CC)的队列长度与服务速率有关,为了使能效的评估更具有普遍性,文中提出了归一化能源效率(NEE)指标。通过仿真分析表明,本文设计的动态载波聚合机制在理想平衡系统(IBS)下取得了能效性能的上限。在动态载波聚合机制之上,针对接入带宽能力不同的用户,主要是指不支持载波聚合的用户,与支持载波聚合的用户混合接入模式下对系统能效以及传输速率的影响做了分析与建模。设计了只使用一个主成员载波(PCC)的概率值进行系统能效评估的准则,仿真结果表明服务最长队列(SLQ)模型获得比基于公平的轮询算法(RRP)更好的能效。文章的后面,描述了一类特殊的网络负载模型,即存在负载量较大并且不支持载波聚合的用户终端。为了系统的能效更高,资源调度器(RS)会将该类用户分配到信道增益最大并且服务速率最高的成员载波上去。此外,针对前面的设计的DCA机制,只是给出了分析上限值,因此在最后的部分,给出了在实际系统模型中的数据结果并与理论分析做了比较与分析。
[Abstract]:Wireless local area network (WLAN) has become an important part of mobile communication due to its unique irreplaceable advantage. In addition, with the demand of higher rate for WLAN and multimedia services for many QoS requirements, the next generation ultra-high speed wireless LAN is bound to develop towards higher QoS guarantee and support multi-wideband capability. This topic also takes the next generation high-speed WLAN technology as the background. Most of the research on WLAN is to maximize system throughput under certain resource allocation, and for wireless links with high capacity, in order to meet the increasing demand of quality of service (QoS). User equipment energy consumption will also become very large. By contrast, however, battery capacity lags behind WLAN speed gains. In addition, in uplink systems, the power consumption of user transmission dominates the wireless power budget. Therefore, in green communication networks, in addition to spectrum efficiency and throughput, energy efficiency has become the mainstream trend of wireless communication in the future. The main content of this paper is also based on the next generation super-high-speed wireless LAN energy-saving communication. The innovative work is mainly based on the basic joint carrier aggregation (JC) and independent carrier aggregation (ICIC), and designs a dynamic carrier aggregation (DCA) mechanism with uplink model. In addition, since transmission power is correlated with system configuration and channel quality in different application scenarios, and the queue length of each member carrier CC) is dependent on the rate of service, in order to make the evaluation of energy efficiency more universal, In this paper, the normalized energy efficiency index is proposed. The simulation results show that the proposed dynamic carrier aggregation mechanism achieves the upper limit of the energy efficiency performance under the ideal balance system (IBS). On the basis of dynamic carrier aggregation mechanism, for users with different access bandwidth, they mainly refer to those who do not support carrier aggregation. The effects of hybrid access mode with carrier aggregation on system energy efficiency and transmission rate are analyzed and modeled. A criterion for evaluating system energy efficiency using only one primary carrier carrier (PCC) probability value is designed. The simulation results show that the service longest queue SLQ model is more efficient than the fair polling algorithm (RRP). At the end of this paper, we describe a special network load model, that is, user terminals with large load and no carrier aggregation. In order to improve the efficiency of the system, the resource scheduler RSs will assign this class of users to the member carriers with the highest channel gain and the highest service rate. In addition, in view of the DCA mechanism designed before, the upper limit value of the analysis is only given, so in the last part, the data results in the actual system model are given and compared with the theoretical analysis.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN925.93

【相似文献】