一种改进的OFDMA飞蜂窝网络频谱管理方案

Mingjie Feng, Da Chen, Zhiqiang Wang, Tao Jiang, Daiming Qu
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引用次数: 7

摘要

femtocell网络被认为是为具有更高容量的室内用户提供更好服务的有效途径。然而,由于增加的飞蜂窝层要么需要额外的频谱资源,要么会对现有的蜂窝网络造成干扰,因此,飞蜂窝网络的频谱分配问题对无线运营商来说是一个挑战。本文考虑了频谱分配和频谱共享的方法来提高飞蜂窝网络的容量性能。我们首先提出了一种利用蜂窝网络结构来减少干扰的频谱分配策略。在此基础上,提出了一种解决飞蜂窝信道不足问题的频谱共享方案。相邻的飞基站可以在考虑瞬时流量需求的情况下相互协调进行资源分配。最后,将所提出的频谱管理方法与几种传统方法进行了比较,并通过仿真结果验证了所提出方案的改进。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An improved spectrum management scheme for OFDMA femtocell networks
The femtocell network is regarded as an effective approach to provide better services for indoor users with higher capacity. However, the spectrum allocation problem of the femtocell network is challenging for the wireless operator, since the added femtocell tier either requires additional spectrum resource or brings interference to the existing cellular network. In this paper, we consider the methods of spectrum allocation and spectrum sharing to improve the capacity performance of femtocell networks. We first propose a spectrum allocation strategy that utilizes the structure of the cellular network to reduce interference. Then, we propose a spectrum sharing scheme that deals with the problem of insufficient channels for femtocells. Adjacent femtocells could coordinate with each other for resource allocation by taking the instantaneous traffic demand into consideration. Finally, the proposed spectrum management methods are compared with several conventional methods and the improvements of the proposed schemes are verified by simulation results.
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