LTE家庭基站异构网络自优化技术研究

发布时间：2018-04-08 22:26

本文选题：家庭基站　切入点：LTE双层网络　出处：《东北大学》2014年硕士论文

【摘要】：家庭基站是近年来根据宽带移动化趋势而发展起来的一种超小型化基站系统,其主要作用是在室内或者其它特定的小范围区域内提供更好的信号覆盖和服务质量。家庭基站的引入不可避免地会对现有的无线网络规划产生影响。自组织网络(SON,SelfOrganizing Network)技术包括自配置、自优化和自愈合功能,是家庭基站网络降低设备制造和网络运维成本、实现设备的简单易用、优化网络整体性能的关键技术之一论文从邻区列表优化和覆盖容量优化两方面对LTE家庭基站双层异构网络自优化技术进行了深入研究,主要研究成果如下：首先针对现有邻区列表优化算法在双层网络场景下研究不足的现状,提出一种大量部署家庭基站场景下的宏基站邻区列表优化方案,该方案的主要特点是对封闭接入模式家庭基站的注册用户特殊考虑,优先保证付费用户的数据服务,提高了系统容量,并降低了系统的中断率。其次针对企业部署场景下LTE家庭基站双层异构网络的覆盖优化问题,提出了基于多属性决策理论的覆盖优化算法。该算法考虑覆盖盲区、覆盖重叠、区域频谱效率和负载平衡四个优化目标,将覆盖优化问题建模为一个多属性决策问题,并利用多属性决策方法中的灰度关联分析法进行求解。所提覆盖优化算法能够较好地兼顾覆盖盲区、覆盖重叠、负载平衡以及区域频谱效率等优化目标,有效改善了网络的整体性能。
[Abstract]:The home base station is a ultra-miniaturized base station system developed in recent years according to the trend of wideband mobility. Its main function is to provide better signal coverage and quality of service in indoor or other specific small areas.The introduction of home base stations will inevitably have an impact on the existing wireless network planning.Self-Organizing Network includes self-configuration, self-optimization and self-healing functions. It can reduce the cost of equipment manufacturing and network operation and maintenance, and make the equipment easy to use.One of the key technologies to optimize the overall performance of the network is the self-optimization of the two-layer heterogeneous network based on the LTE home base station from the aspects of neighborhood list optimization and coverage capacity optimization.The main research results are as follows: firstly, in view of the lack of research on the existing neighborhood list optimization algorithms in the two-layer network scenario, this paper proposes a macro base station neighbor list optimization scheme based on the deployment of a large number of home base station scenarios.The main features of the scheme are that the registered users of the closed access mode family base station are specially considered, the data service of the paying users is guaranteed first, the system capacity is increased, and the system interruption rate is reduced.Secondly, a coverage optimization algorithm based on multi-attribute decision theory is proposed to solve the coverage optimization problem of LTE home base station bilevel heterogeneous network in the scenario of enterprise deployment.The algorithm considers the four optimization objectives of coverage blind area, coverage overlap, region spectrum efficiency and load balance. The coverage optimization problem is modeled as a multi-attribute decision making problem and solved by gray correlation analysis in the multi-attribute decision making method.The proposed coverage optimization algorithm can effectively improve the overall performance of the network by taking into account the optimization objectives such as coverage blind area coverage overlap load balancing and regional spectral efficiency.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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