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Multi-Beam Cooperative Frequency Reuse for Coordinated Multi-Point Systems

Jingya Li ; Xiaodong Xu ; Hui Zhang ; Xiaofeng Tao ; Tommy Svensson (Institutionen för signaler och system, Kommunikationssystem) ; Carmen Botella (Institutionen för signaler och system, Kommunikationssystem)
The Journal of China Universities of Posts and Telecommucations. (1005-8885). Vol. 17 (2010), 6,
[Artikel, refereegranskad vetenskaplig]

Coordinated Multi-Point (CoMP) transmission is considered in 3GPP LTE-Advanced as a key technique to mitigate inter-cell interference and improve the cell-edge performance. To apply CoMP joint transmission effectively, efficient frequency reuse schemes need to be designed to support resource management cooperation among coordinated cells. However, most of the existing frequency reuse schemes are not suitable for CoMP systems due to not considering multi-point cooperative transmission scenario in their frequency reuse rules. In addition, the restrictions of frequency resources in those schemes result in high blocking probability. To solve the above two problems, a multi-beam cooperative frequency reuse (MBCFR) scheme is proposed in this paper, which reuses all the available frequency resources in each sector and supports multi-beam cooperative transmission for cell-edge users. Besides, the blocking probability is proved to be efficiently reduced. Then, a frequency-segment-sequence based MBCFR scheme is introduced to further reduce the inter-cell interference. System level simulations demonstrate that the proposed scheme results in higher cell-edge average throughput and cell-average throughput with lower blocking probability.

Nyckelord: OFDMA, frequency reuse, inter-cell interference, coordinated multi-point transmission



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Denna post skapades 2010-01-11. Senast ändrad 2015-03-30.
CPL Pubid: 106179

 

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