Spectrum allocation strategies for heterogeneous networks

Rindranirina Ramamonjison, G. Tran, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, Noriaki Miyazaki
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引用次数: 7

Abstract

This work analyzed the trade-off between the area spectral efficiency and outage user rates in heterogeneous cellular networks with overlapping picocells. We considered two different models for the spectrum allocation and cell association. The first model employs a spectrum overlapping strategy with an SINR-based cell association. The second model avoids the interference between macrocell and picocell through a spectrum splitting strategy. Furthermore, picocell range expansion was also considered for the later to enable a load balancing between the macrocell and picocells. Our results showed that while the spectrum overlapping provides the highest spectral efficiency, its outage rate performance is very poor. In contrast, the spectrum splitting offered a trade-off by guaranteeing a minimum QoS for the weak user rates and by flexibly varying the spectrum splitting ratio and picocell range.
异构网络的频谱分配策略
本文分析了具有重叠皮cell的异构蜂窝网络中区域频谱效率和中断用户率之间的权衡关系。我们考虑了两种不同的频谱分配和小区关联模型。第一种模型采用基于sinr的细胞关联的频谱重叠策略。第二个模型通过频谱分裂策略避免了宏细胞和皮细胞之间的干扰。此外,还考虑了皮cell范围扩展,以实现宏cell和皮cell之间的负载平衡。研究结果表明,虽然频谱重叠提供了最高的频谱效率,但其中断率性能很差。相比之下,频谱分割提供了一种权衡,保证了弱用户速率下的最低QoS,并灵活地改变了频谱分割比和皮cell范围。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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