A study of bandwidth management in 5G network – system design and analysis

• Main Authors: Cheng-wei Hu, 胡程偉
• Other Authors: 王永鐘
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/f2qjzu

博士 === 國立臺北科技大學 === 電機工程系 === 106 === The evolution of wireless communication networks is advancing. There has been a significant increase in speed from 4G network, which is conducive to the vigorous development of video and audio content. Online multimedia media traffic is increasing day by day, so providing a high-quality service experience is a key indicator of the next-generation mobile network capabilities. This work will focus on how to improve the users multimedia service experience in 5G networks. This thesis covers two major themes: the discussion of admission control of resource access and the discussion on integration of 5G mobile network with software-defined networks and on-demand video load balancing. First, in terms of admission control, we put emphasis on matrix analysis methods to evaluate system performance based on the steady-state probability of the two-dimensional Markov process. When users use different QoS classification levels of traffic for new access or roaming requests, the system will use the proposed hierarchical thresholds set as the priority of resource allocation to adjust system utilization and enhance user experience. This method can be used as a reference framework for designing dynamic bandwidth algorithms for tuning parameters in the future. We verify the results of the hierarchical threshold adjustment set by analyzing the loss rate of the handover and the blocking rate of new accesses. The results show that this method can provide better service quality and be an analytical model for tuning extensional parameter tuple. Second, in the part of the core network, 5G network proposed a framework for network slice and network function virtualization. Different from the traditional way of distributing the optimal access path for accessing the content delivery network through DNS load balancing, this study proposes to combine the software-defined network and content delivery network with the 5G mobile network system and propose an integrated architecture with the adjustment of content resolution to achieve better user experiences.