基于TD-LTE宽带虚拟专网的接入控制和资源分配算法研究

发布时间：2018-04-03 18:32

本文选题：宽带虚拟专网　切入点：TD-LTE网络　出处：《哈尔滨工业大学》2014年硕士论文

【摘要】：宽带虚拟专网是未来集群通信的发展方向,这种建立在公网基础上的集群业务模型是扩大和提升集群性能的有效方法,TD-LTE技术是3GPP标准下的新一代公网技术的标准之一,是建立在TD-SWCDMA基础上的具有自主知识产权的无线通信技术。因此深化TD-LTE信通的宽带虚拟专网技术的研究和开发,都将对中国未来的无线通信行业自主研究能力带来深远影响。结合原有的集群用户的服务质量需求和TD-LTE公网技术标准,充分考虑例如,军事、安全、服务和运输等行业的具体需求,建立一系列的技术标准,实现真正可重复使用的满足更多场景的TD-LTE虚拟专网业务。本文分析TD-LTE的关键技术和虚拟专网的设计需求,了解TD-LTE技术能给集群通信业务带来的发展空间,并引出了虚拟专网的未来发展方向,在虚拟专网的网络构建上提出相应的设计方法,对未来专网业务的展开和发展做出了构想,以充分利用系统资源和提供专网用户业务保证为目的,设计动态的随机接入算法和资源分配算法,并针对设计算法进行理论仿真和分析,验证设计算法的正确性和可行性。本文采用了多模型结合退避算法的随机接入控制算法,将随机接入成功率和平均接入时延这两个相互矛盾的参量,变为能够在一定程度上自主控制的参量,这对专网业务的设计有重要意义,在用户完成随机接入后,如何分配和使用系统的频率资源是下一步主要考虑的问题,本文提出了基于动态优先级控制的下行资源分配算法,将系统负载作为系统资源分配和优先级划分的重要参考,这一点在以往的集群通信系统设计中是很少考虑的,原因主要是以往的通信系统的资源数目有限,系统信令容量有限以及资源分集方式不支持,这些都在TD-LTE公网技术中得到了有效的解决,以用户群组在总用户数目中所占比例,对系统资源进行分配,对高优先级用户群组采用预留方式,对普通用户群组采用公平竞争方式,在用户公平性和资源利用率的角度动态的控制系统资源,该算法为下一步真正的资源智能化管理提供了有用意见。
[Abstract]:Broadband virtual private network is the future development direction of cluster communication, cluster service model based on network on the basis of this is an effective way to expand and enhance the performance of clusters, TD-LTE technology is one of the standard of the new generation network technology under 3GPP standard, is a wireless communication technology with independent intellectual property rights TD-SWCDMA built on the basis of research. With the development of broadband network technology therefore deepen TD-LTE ICT, will have a profound impact on the future of the wireless communications industry China independent research ability. Combined with the original cluster user quality of service requirements and TD-LTE network technology standards, fully consider for example, military, security, the specific needs of service and transportation and other industries, the establishment of technical standards a series of truly reusable TD-LTE VPN services meet more scenarios. This paper analyzes the key technologies of TD-LTE and virtual college Design requirements of network, understand the development space of TD-LTE technology can bring to the cluster communication service, and points out the direction of future development of virtual private network, put forward the corresponding design methods in VPN network construction, make the conception of development and future development of network services, to provide network user service guarantee for the purpose of making full use of the system resources and random access algorithm and dynamic resource allocation algorithm design, and simulation and analysis for the design of the algorithm, verify the correctness and feasibility of the design algorithm. This paper uses multi model with random access control algorithm of backoff algorithm, the random access success rate and average access delay of the two conflicting parameters. As to parameters of autonomous control to a certain extent, it has important significance for the design of network business, the user in the random access, such as distribution and The frequency of use of system resources is the next major problem, proposed the downlink resource allocation algorithm based on dynamic priority control, system load will serve as an important reference for system resource allocation and prioritization, this point in the design of trunking communication systems in the past are rarely considered, the main reason is the number of resources in communication system in the past, the system of limited capacity and resources signaling diversity does not support, these are in the TD-LTE network technology has been effectively solved, with the total number of users in user groups in the proportion of the allocation of system resources for high priority user group is preserved, for the common user group by way of fair competition in the control system of the utilization rate of resources, user fairness and the perspective of resource dynamic resource, the algorithm for the intelligent management of real next step provided Useful advice.

【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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