基于TD-LTE公网集群多媒体业务下行无线资源调度算法的研究

发布时间：2018-05-17 08:37

本文选题：TD-LTE + 集群通信　；参考：《哈尔滨工业大学》2014年硕士论文

【摘要】：目前，数字集群通信系统快速发展，由传统的提供语音业务为主，到现在对支持多样化的多媒体业务的广泛需求，数字集群通信系统对带宽的要求越来越高。同时，TD-LTE（Time Division Long-term evolution，时分长期演进）作为新一代宽带泛在无线网络的代表，正在快速发展。TD-LTE是我国第四代移动通信的标准，目前已经商用。所以，将数字集群应用集成到TD-LTE公网中，发展TD-LTE公网集群系统，能够解决集群多媒体业务对数字集群通信的带宽需求。虽然TD-LTE有巨大的优势，但是实现TD-LTE公网集群，还要考虑很多，无线资源调度算法的设计就是其中之一。目前TD-LTE调度算法的研究，主要集中在如何保障多媒体业务的QoS（Quality of Service，服务质量）特性上，并没有专门地针对集群多媒体业务进行研究。集群通信需要对用户的优先级进行管理，与一般多媒体业务不同的是，集群多媒体业务要区分用户的优先级。所以本文研究的目的是提出一种TD-LTE公网集群多媒体业务下行无线资源调度算法，既能够保障QoS特性又能提供用户优先级管理。本文首先介绍了课题背景和研究意义。在第二章里，我们分析了TD-LTE下行无线资源调度的基本原理，首先介绍了TD-LTE下行系统的模型、关键技术以及资源分配策略的建模过程。还介绍了下行包调度的过程和包调度算法的分类，以及包调度算法的性能分析参数。最后，简单介绍了本文仿真使用的仿真平台，LTE-Sim。。在第三章里，我们简单介绍了TD-LTE的三种经典算法。通过对FLS算法的理论分析，，并比较仿真结果，清晰地表明FLS算法的巨大优势。为后文提出集群多媒体业务下行调度算法提供了理论基础和创新想法。第四章是本文的重点，本章提出了一种TD-LTE公网集群多媒体业务下行无线资源调度算法，DTLCP（Discrete Time Line Control with Priority，带优先级的离散时间线性控制）。第五章也是本文的重点之一，本章提出了DTLCP算法的一种改进算法，M-DTLCP（Modified-Discrete-Time Line Control with Priority，修改的带优先级的离散时间线性控制）。最后，对改进算法M-DTLCP进行仿真。最后，对本文进行了归纳总结，给出本文结论。
[Abstract]:At present, the rapid development of the digital trunking communication system is based on the traditional voice service. To the wide demand for the diversified multimedia services, the digital trunking communication system requires more and more bandwidth. At the same time, TD-LTE (Time Division Long-term evolution, TDD) is a new generation of broadband ubiquitous wireless The representative of the network is developing.TD-LTE rapidly as the standard of the fourth generation of mobile communication in China. It is now commercially available. Therefore, the integration of the digital cluster application into the TD-LTE public network and the development of the TD-LTE public network cluster system can solve the wide demand of the cluster multimedia service to the digital trunking communication.
Although TD-LTE has great advantages, the realization of the TD-LTE public network cluster is still one of the many. The design of the wireless resource scheduling algorithm is one of them. At present, the research of TD-LTE scheduling algorithm is mainly focused on how to guarantee the QoS (Quality of Service, quality of service) of multimedia services, and does not specifically aim at cluster multimedia. The cluster communication needs to manage the priority of the user. Unlike the general multimedia service, the cluster multimedia service should distinguish the user's priority. So the purpose of this paper is to propose a wireless resource scheduling algorithm for the TD-LTE public network cluster multimedia service downlink, which can not only guarantee the QoS characteristics but also provide the performance of the wireless resource scheduling. User priority management.
This paper first introduces the background and significance of the research.
In the second chapter, we analyze the basic principle of TD-LTE downlink wireless resource scheduling. First, it introduces the model of TD-LTE downlink system, key technology and the modeling process of resource allocation strategy. It also introduces the process of downlink packet scheduling, the classification of packet scheduling algorithm and the performance analysis parameters of packet scheduling algorithm. Finally, it introduces a brief introduction to the performance of packet scheduling algorithm. The simulation platform used in this paper is a simulation platform, LTE-Sim..
In the third chapter, we briefly introduce three classical algorithms of TD-LTE. Through the analysis of the theoretical analysis of the FLS algorithm and the comparison of the simulation results, we clearly show the great advantage of the FLS algorithm. This provides a theoretical basis and innovative idea for the later proposed algorithm for the downlink scheduling of cluster multimedia services.
The fourth chapter is the focus of this paper. In this chapter, a wireless resource scheduling algorithm for TD-LTE public network cluster multimedia service downlink is proposed, DTLCP (Discrete Time Line Control with Priority, discrete time linear control with priority).
The fifth chapter is also one of the key points of this paper. This chapter proposes an improved algorithm for DTLCP algorithm, M-DTLCP (Modified-Discrete-Time Line Control with Priority, modified discrete time linear control with priority). Finally, the improved algorithm M-DTLCP is simulated.
Finally, the paper concludes and gives the conclusion of this paper.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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