A Non-uniform ABS allocation for next generation networks

• Main Authors: Chun-Yu Chan, 詹淳愉
• Other Authors: Guey-Yun Chang
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/nbwfdu

碩士 === 國立中央大學 === 資訊工程學系 === 107 === In order to satisfy increasing traffic demands, 5G network supported beamforming to improve the system throughput. This paper aims to reduce the interference between macro cell and small cell and increase the system beam utilization by beamforming to efficiently improve the system throughput and decrease the execution time of optimal ABS allocation computation. In LTE, traditional enhanced Inter-Cell Interference Coordination reduces the interference between cells by Uniform ABS allocation and achieves load balancing by Cell Range Expansion. However, adopting Uniform ABS allocation will waste the system resources because it can't fully utilize the beam of each cell. In order to address the waste of resources problem, we proposed a beam-based Non-uniform ABS allocation with CRE in Dual Connectivity algorithm that made each beam of cells use its own optimal ABS ratio to increase the beam utilization and each small cell have its own optimal CRE bias. Other than this, in this paper, if there are small cell edge users located at the beam of small cell, we will allocate the ABS subframes for small cell edge users and Non-ABS subframes for small cell center users. If there are no small cell edge users located at the beam of small cell, we will allocate the ABS subframes and Non-ABS subframes for small cell center users to receive downlink data. Final, we used Gurobi which is a commercial optimization solver to evaluate our performance and execution time.