Dynamic resource allocation in hybrid access femtocell network.

Dynamic resource allocation in hybrid access femtocell network.
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DOI:
10.1155/2014/539720
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发表时间:
2014
影响因子:
--
通讯作者:
Ghanbarisabagh M
Ghanbarisabagh M
中科院分区:
其他
文献类型:
--
作者:
Ahmed AU;Islam MT;Ismail M;Ghanbarisabagh M

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小区间干扰是现有宏小区覆盖下的毫微微小区部署中最具挑战性的问题之一。在密集的毫微微蜂窝网络中,毫微微蜂窝和宏蜂窝之间的资源分配对于对抗干扰的影响至关重要。资源管理策略的进步改善了在较低节点密度下的干扰抑制控制机制,但大多数在较高节点密度下无效。提出了一种频谱共享混合接入OFDMA毫微微蜂窝网络的动态资源分配管理算法。为了减少宏-毫微微层干扰,提高服务质量,所提出的算法的特点是一个动态的资源分配方案,通过控制他们集中和本地。所提出的方案侧重于毫微微蜂窝接入点(FAP)业主的满意度,并允许最大限度地利用可用资源的基础上,在网络中的拥塞。开发了一个仿真环境,研究了DRAMA在混合接入控制毫微微蜂窝网络中的定量性能,并将其与封闭和开放接入机制进行了比较。性能分析表明,更高数量的随机用户连接到FAP,而不损害FAP所有者的满意度,允许宏小区在密集的异构网络中卸载大量的用户。
Intercell interference is one of the most challenging issues in femtocell deployment under the coverage of existing macrocell. Allocation of resources between femtocell and macrocell is essential to counter the effects of interference in dense femtocell networks. Advances in resource management strategies have improved the control mechanism for interference reduction at lower node density, but most of them are ineffective at higher node density. In this paper, a dynamic resource allocation management algorithm (DRAMA) for spectrum shared hybrid access OFDMA femtocell network is proposed. To reduce the macro-femto-tier interference and to improve the quality of service, the proposed algorithm features a dynamic resource allocation scheme by controlling them both centrally and locally. The proposed scheme focuses on Femtocell Access Point (FAP) owners' satisfaction and allows maximum utilization of available resources based on congestion in the network. A simulation environment is developed to study the quantitative performance of DRAMA in hybrid access-control femtocell network and compare it to closed and open access mechanisms. The performance analysis shows that higher number of random users gets connected to the FAP without compromising FAP owners' satisfaction allowing the macrocell to offload a large number of users in a dense heterogeneous network.
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