无定形小区动态管理研究
发布时间：2018-11-15 12:52
【摘要】：随着以LTE和LTE-Advanced为主的4G系统的发展,以固定节点形成的网络结构已经无法有效地满足迅速增长的业务需求。形状、位置可动态变化的无定形小区,不仅能够对抗由网络自身的特性所引起的覆盖空洞,还可以增强覆盖、降低成本。基于这些,我们完全可以有理由相信,对无定形小区系统的研究将具有极大的理论价值和更广阔的应用前景。本文主要研究了无定形小区系统中的动态资源管理。首先,介绍了无定形小区系统的相关知识,主要包括定义、特点、场景等,并对mobile relay的结构进行了介绍,然后阐述了与mobile relay结构相对应的场景和切换过程。针对无定形小区系统,基于现有的mobile relay切换机制,本文研究了一种基于双天线架构的优化切换机制,以实现在高速铁路环境中的群切换,同时保证在切换过程中的为用户提供不间断通信服务,进而达到减少信令损耗、保证通信质量的目的。最后,针对无定形小区的移动性特点,基于马尔可夫决策过程,研究了考虑用户移动性的动态中继选择方法,使得中继的选择更能符合用户移动性和绿色通信的需求。本文结合现有的相关知识,针对无定形小区系统中的动态特性进行了相关研究,希望能为无定形小区的实际应用提供便利。
[Abstract]:With the development of 4G systems with LTE and LTE-Advanced, the network structure formed by fixed nodes can not meet the rapidly increasing service demand. The amorphous cell whose shape and position can change dynamically can not only resist the coverage void caused by the characteristics of the network itself but also enhance the coverage and reduce the cost. Based on these, we can reasonably believe that the study of amorphous cell system will have great theoretical value and wider application prospect. This paper mainly studies the dynamic resource management in the amorphous cell system. Firstly, the knowledge of amorphous cell system is introduced, including definition, characteristics, scene and so on. The structure of mobile relay is introduced, and then the scene and switching process corresponding to mobile relay structure are described. For the amorphous cell system, based on the existing mobile relay handoff mechanism, this paper studies an optimized handoff mechanism based on dual-antenna architecture to realize group handover in high-speed railway environment. At the same time, it can provide continuous communication service to users in the process of switching, so as to reduce the loss of signaling and ensure the quality of communication. Finally, according to the mobility characteristics of amorphous cell, based on Markov decision process, the dynamic relay selection method considering user mobility is studied, which makes the relay selection meet the needs of user mobility and green communication. Based on the existing knowledge, this paper studies the dynamic characteristics of amorphous cell system, hoping to provide convenience for the practical application of amorphous cell.
【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】：2014
【分类号】：TN929.5
[Abstract]:With the development of 4G systems with LTE and LTE-Advanced, the network structure formed by fixed nodes can not meet the rapidly increasing service demand. The amorphous cell whose shape and position can change dynamically can not only resist the coverage void caused by the characteristics of the network itself but also enhance the coverage and reduce the cost. Based on these, we can reasonably believe that the study of amorphous cell system will have great theoretical value and wider application prospect. This paper mainly studies the dynamic resource management in the amorphous cell system. Firstly, the knowledge of amorphous cell system is introduced, including definition, characteristics, scene and so on. The structure of mobile relay is introduced, and then the scene and switching process corresponding to mobile relay structure are described. For the amorphous cell system, based on the existing mobile relay handoff mechanism, this paper studies an optimized handoff mechanism based on dual-antenna architecture to realize group handover in high-speed railway environment. At the same time, it can provide continuous communication service to users in the process of switching, so as to reduce the loss of signaling and ensure the quality of communication. Finally, according to the mobility characteristics of amorphous cell, based on Markov decision process, the dynamic relay selection method considering user mobility is studied, which makes the relay selection meet the needs of user mobility and green communication. Based on the existing knowledge, this paper studies the dynamic characteristics of amorphous cell system, hoping to provide convenience for the practical application of amorphous cell.
【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】：2014
【分类号】：TN929.5
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