A Novel Frequency Reuse Scheme for Coordinated Multi-Point Transmission
A Novel Frequency Reuse Scheme for Coordinated Multi-Point Transmission
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DOI：
10.1109/vetecs.2010.5493743
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
Jingya Li;Hui Zhang;Xiaodong Xu;Xiaofeng Tao;T. Svensson;C. Botella;Baoling Liu
中科院分区：
文献类型：
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作者：
Jingya Li;Hui Zhang;Xiaodong Xu;Xiaofeng Tao;T. Svensson;C. Botella;Baoling Liu
在3GPP LTE-Advanced中，CoMP （Coordinated Multi-Point）传输被认为是提高蜂窝边缘性能的关键技术。为了支持CoMP系统中各坐标单元之间的资源联合分配，需要设计有效的频率复用方案。然而，现有的频率复用方案大多在频率复用规则中没有考虑多小区联合传输场景，不适合CoMP传输。为了解决这一问题，本文提出了一种协同频率复用（CFR）方案，该方案将每个小区的小区边缘区域划分为两类区域，并定义频率复用规则以支持小区内用户的CoMP传输。仿真结果表明，与传统的软频率复用（SFR）方案相比，CFR方案的阻塞率降低了50%以上，小区边缘吞吐量提高了30~40%，小区平均吞吐量提高了5~9%。
Coordinated Multi-Point (CoMP) transmission is considered in 3GPP LTE-Advanced as a key technique to improve the cell-edge performance. In order to support joint resource allocation among coordinate cells in CoMP systems, efficient frequency reuse schemes need to be designed. However, most of the existing frequency reuse schemes are not suitable for CoMP transmission due to not considering multi-cell joint transmission scenario in their frequency reuse rule. To solve this problem, a cooperative frequency reuse (CFR) scheme is proposed in this paper, which divides the cell-edge area of each cell into two types of zones, and defines a frequency reuse rule to support CoMP transmission for users in these zones. Compared with the conventional soft frequency reuse (SFR) scheme, simulation results demonstrate that the CFR scheme reduces the blocking probability by more than 50%, and improves the cell-edge throughput by 30~40%, with 5~9% additional cell-average throughput.