Dynamic Interference Mitigation and Load Balancing for eICIC in Heterogeneous Networks

• Main Authors: Yeh, Kuan-Hsuan, 葉洸亘
• Other Authors: Lee, Ta-Sung
• Format: Others
• Language: en_US
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/hd9fhb

碩士 === 國立交通大學 === 電信工程研究所 === 103 === Enhanced Inter-cell Interference Coordination (eICIC) is one of the most popular techniques used to mitigate the interference problem in heterogeneous networks. This thesis investigates the dynamic eICIC mechanism with quality of service (QoS) requirements in wireless communication systems. Because of the user mobility and traffic dynamics, the dynamic eICIC mechanism is necessary in modern wireless networks. With QoS requirements, users could utilize the system resources efficiently under the dynamic eICIC mechanism. In order to evaluate the system performance in different aspects, the throughput and fairness are selected as the metrics. We firstly use a modified sum-rate utility as the throughput metric, and propose a dynamic eICIC strategy for the system sum throughput maximization. Then we choose a proportional fairness utility as the fairness metric, and propose a dynamic eICIC strategy for proportional fairness maximization. Finally, computer simulations show that the performance of the dynamic eICIC mechanism with QoS requirements is better than the static eICIC mechanism and conventional dynamic eICIC mechanism in different scenarios.