Improving efficiency in resource allocation of OFDMA femtocell networks

Keyvan Aghababaiyan, Mohammadreza Pakravan
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引用次数: 1

Abstract

Interference control is one of the fundamental challenges in resource allocation of femtocell networks that use orthogonal frequency-division multiple access (OFDMA). In this paper, a method is proposed that reduces the interference between femtocells. This method is implemented by the femtocells in a self organizing manner and increases frequency reuse factor. Thus, the network throughput will increase and the fairness between femtocells remains reasonable we also propose a mechanism that can be applied increase the frequency resources assigned to each femtocell. These new frequencies can be used when femtocells require more frequency resources to carry higher traffic loads. Results of simulations show the improvement of the first method compared to the previous methods. It is also demonstrated that by applying the second mechanism in a high-load condition of the network, a considerable improvement is observed in its throughput. (Between 20-120% improvements).
提高OFDMA移动蜂窝网络的资源分配效率
干扰控制是采用正交频分多址(OFDMA)技术的飞蜂窝网络资源分配的基本挑战之一。本文提出了一种减少飞基站间干扰的方法。该方法是由飞单元以自组织的方式实现的,提高了频率复用系数。因此,网络吞吐量将会增加,并且基站之间的公平性仍然合理。我们还提出了一种可以应用于增加分配给每个基站的频率资源的机制。当飞基站需要更多的频率资源来承载更高的流量负载时,可以使用这些新频率。仿真结果表明,第一种方法较前几种方法有较大的改进。结果还表明,在网络的高负载条件下应用第二种机制,其吞吐量有相当大的提高。(20-120%的改进)。
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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