A Novel Dynamic Interference Coordination Scheme in Macrocell-Picocell Heterogeneous Networks

被引:0
作者
Zeng, Mengxian [1 ]
Chen, Xiaohang [1 ]
Zhang, Xin [1 ]
Sang, Lin [1 ]
Yang, Dacheng [1 ]
机构
[1] Beijing Univ Posts & Telecommun, Beijing 100876, Peoples R China
来源
2013 IEEE 77TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2013年
关键词
interference coordination; Het-Nets; picocell; SFR; interference gragh;
D O I
暂无
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
Picocell is an emerging and key item in LTE-Advanced system, for providing improved service coverage and high spectral efficiency with low power. However, in heterogeneous networks (Het-Nets) with macrocells and picocells, more complicated interference scenario can severely degrade the system performance, especially for system capacity and data rate of cell-edge users. Consequently, effective interference coordination schemes are in great demand to mitigate these interference problems. In this paper, we propose a new effective dynamic interference coordination scheme based on an innovative combination of soft frequency reuse (SFR) and improved Graph-based resource allocation in orthogonal frequency-division multiplexing access (OFDMA) macrocell-picocell network. The system-level simulation results show that the proposed scheme can achieve superior system performance improvements, higher cell-edge user data rate and more efficient frequency reuse, comparing with the time domain interference coordination Almost Blank Subframes (ABS) scheme and the conventional co-channel resource allocation scheme.
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页数:5
相关论文
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