LTE专网集群通信系统基站中无线资源调度技术研究

发布时间：2018-09-12 05:57

【摘要】：专网集群无线通信系统是应用于某个行业或者某个部门内、以指挥调度为主要特征的移动通信系统,该系统以特定用户群体为目标用户,提供指挥调度功能。专网集群通信具有一些无法取代的特性,如区分用户优先级和高度定制化等。在专网集群无线通信系统中传输业务有公网的四类传统业务也有专用业务如群组呼叫、广播呼叫和个人呼叫等。专网集群无线通信系统为达到系统容量最大化和时延最小化的设计目标,基站中无线资源调度技术需要根据业务QoS要求和无线信道的状态分配无线资源,达到业务的QoS传输保障。本论文将具体研究专网集群无线通信系统中网络特点、业务QoS要求和无线资源调度方法。具体工作包括以下几个方面:1)研究了专网集群无线通信系统特征和分类;2)研究了无线业务传输的QoS要求和前人的无线资源分配方法,分析了专网集群无线通信系统的无线资源调度方法设计要求;3)研究了无线传输业务基本模型和分析了各类业务的数学模型;4)在分析LTE无线网络中吞吐量和传输时延性能的基础上,针对专网集群LTE无线通信业务传输的特点,提出了一种基于长时统计平均和瞬时峰值方法的基站下行传输自适应调度算法,给出了自适应调度算法中优先级计算方法和资源调度算法的流程图,仿真结果表明,该算法能够在对非时延敏感业务性能保证的基础上,降低了时延敏感业务的传输时延,同时有效提高了系统的吞吐量。
[Abstract]:The private network trunked wireless communication system is a mobile communication system which is applied to a certain industry or a certain department with the command and scheduling as the main characteristic. The system takes a specific user group as the target user and provides command and scheduling function. Private network trunking communication has some irreplaceable features, such as user priority and highly customized. In the private network trunked wireless communication system, there are four kinds of traditional services, such as group call, broadcast call and personal call. In order to achieve the design goal of maximizing the capacity and minimizing the delay of the private network trunked wireless communication system, the wireless resource scheduling technology in the base station needs to allocate the wireless resources according to the service QoS requirements and the state of the wireless channel. Achieve service QoS transmission guarantee. In this paper, we will study the network characteristics, service QoS requirements and wireless resource scheduling methods in private network trunked wireless communication systems. The specific work includes the following aspects: 1) the characteristics and classification of private network trunked wireless communication systems are studied. (2) the QoS requirements of wireless traffic transmission and the previous wireless resource allocation methods are studied. This paper analyzes the design requirements of wireless resource scheduling method for private network trunked wireless communication system. (3) the basic model of wireless transmission service and the mathematical model of all kinds of services are studied. 4) the throughput and transmission in LTE wireless network are analyzed. Based on the extended performance, According to the characteristics of private network cluster LTE wireless communication service transmission, this paper presents an adaptive scheduling algorithm for downlink transmission of base station based on long-time statistical average and instantaneous peak value method. The priority calculation method and the flow chart of the resource scheduling algorithm in the adaptive scheduling algorithm are given. The simulation results show that the proposed algorithm can reduce the transmission delay of the delay sensitive traffic on the basis of guaranteeing the performance of the non-delay sensitive traffic. At the same time, the throughput of the system is improved effectively.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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