认知网络资源质量分析与其管理演示系统设计实现

发布时间：2018-01-10 06:30

本文关键词：认知网络资源质量分析与其管理演示系统设计实现　出处：《西安电子科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着科学技术的发展和通信业务需求的增加,频谱需求也逐渐增加,然而频谱资源相对利用率却比较低。认知无线电技术的提出,能够在一定程度上有效提高频谱利用率,有望缓解当前所面临的越来越严重的频谱资源短缺的困局。所以研究认知无线电、发展认知无线电是一个非常有意义的课题。在认知无线电的基础上,认知网络也被人们所认识和发展。认知网络是一种具有认知和感知当前网络条件并采取一定规划和决策的网络。该认知网络适用于任何网络,同时能够分析各类网络中的不同资源,并能够合理利用和分配这些资源。本文着重研究了认知网络中资源的质量评估,设计并实现了网络资源的管理演示软件系统,具体工作如下:(1)认知网络资源分析。对于认知网络,其资源丰富多样,所以资源管理也非常复杂。本文主要针对认知网络中频谱资源、节点资源和链路资源进行分析和探索,总结出每种资源的服务能力、稳定性和质量。服务能力指当前时刻是否有能力接入业务,稳定性指的是能够持续满足业务条件的平均时间,而质量是总的满足业务能力的描述。本文利用隐马尔可夫模型对资源的变化进行描述,并根据状态转移参数以及其他定义确定资源的服务能力、稳定性和质量。最后把分析资源得到的质量结果应用到认知网络资源管理系统中。(2)认知网络资源管理演示系统结构设计。本文设计了一个简单的认知网络资源管理系统。该系统由通信模块、资源存储模块、资源分析模块、策略模块组成。资源存储模块和分析模块使用SQL Server 2005软件设计各个所需要的数据库的字段和属性等。策略模块根据不同的业务,制定不同的分配策略,对资源进行有效的分配。而在通信模块中,本文设计了通信数据传输所使用的帧格式,即资源信息数据传输接口、业务需求数据传输接口、资源分配数据传输接口来辅助通信。(3)认知网络资源管理演示系统实现。本文利用Visual Studio软件中的C#语言实现了该认知网络资源管理演示系统。在某个特定的场景,本文设定了感知模拟端进行感知信息的模拟,并利用Socket通信与认知网络资源管理演示系统进行通信,管理系统在策略模块中对传输过来的资源信息进行分析和处理。同时设定一个业务模拟端模拟业务资源需求,并将业务资源需求发送到认知网络资源管理系统中,最后管理系统通过策略模块对业务进行资源的分配并把分配结果传输到业务模拟端。
[Abstract]:With the development of science and technology and the increase of communication service demand, the spectrum demand also increases gradually. However, the relative utilization ratio of spectrum resources is relatively low. Cognitive radio technology is proposed. It can effectively improve the spectrum efficiency to a certain extent, which is expected to alleviate the more and more serious shortage of spectrum resources. Therefore, cognitive radio is studied. The development of cognitive radio is a very meaningful topic. On the basis of cognitive radio. Cognitive network is also recognized and developed by people. Cognitive network is a kind of network with cognitive and perceptual current network conditions and takes certain planning and decision-making. The cognitive network is applicable to any network. At the same time, it can analyze different resources in various networks, and can reasonably use and allocate these resources. This paper focuses on the quality evaluation of resources in cognitive networks. This paper designs and implements a demonstration software system for network resource management. The specific work is as follows: 1) Cognitive network resource analysis. For cognitive network, its resources are rich and diverse. Therefore, resource management is also very complex. This paper analyzes and explores the spectrum resources, node resources and link resources in cognitive networks, and summarizes the service capability of each resource. Stability and quality. Service capability refers to the ability to access services at the current time, and stability refers to the average time that the service conditions can be continuously satisfied. The quality is the description of the total service capability. This paper uses hidden Markov model to describe the resource changes and determines the resource service capacity according to the state transition parameters and other definitions. Stability and quality. Finally, the quality results obtained from the analysis of resources are applied to the cognitive network resource management system. This paper designs a simple cognitive network resource management system, which is composed of communication module. Resource storage module, resource analysis module. The resource storage module and the analysis module use SQL Server 2005 software to design the fields and attributes of each required database. The policy module is based on different business. In the communication module, the frame format used in the communication data transmission is designed, that is, the resource information data transmission interface. Business requirements data transfer interface. Resource allocation data transfer interface to assist communication. This paper uses C # language in Visual Studio software to realize the cognitive network resource management demonstration system. In this paper, we set up the simulation of perceptual information at the analog end, and use Socket communication and cognitive network resource management demonstration system to communicate. The management system analyzes and processes the transmitted resource information in the policy module and sets up a business simulator to simulate the business resource requirements. The service resource requirement is sent to the cognitive network resource management system. Finally, the management system allocates the service resource through the policy module and transmits the allocation result to the service simulation end.
【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】：2015
【分类号】：TN925;TP311.52

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