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On attachment optimization and muting pattern selection in eICIC

机译：eICIC中的附件优化和静音模式选择

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Enhanced Inter-Cell Interference Coordination (eICIC) is a mechanism introduced in LTE Advanced for controlling interference in heterogeneous mobile networks. To operate eICIC efficiently, the attachment of User Equipment (UE)s to Evolved Node B (eNB) base stations and the muting patterns must be optimized. Usually, the UE to eNB attachment is optimized by varying the Cell Specific Offsets (CSO)s that determine the size of the small cells. However, these Cell Range Expansion (CRE) based optimization methods do not consider all possible UE to eNB attachments. In this paper we propose a new method for optimizing the UE attachments that is not based on the traditional CRE approach, considers all UE attachment possibilities and is computationally efficient. We compare the performance of the proposed method with a typical CRE based method in an example network. Muting pattern selection is also investigated in the example network, and the results show that limiting the number of muting patterns to a set satisfying certain practical constraints gives nearly the same performance as always selecting the best of the considered patterns.
机译：增强的小区间干扰协调（eICIC）是LTE Advanced中引入的一种机制，用于控制异构移动网络中的干扰。为了有效地操作eICIC，必须优化用户设备（UE）到演进型节点B（eNB）基站的连接和静音模式。通常，通过改变确定小小区大小的小区特定偏移量（CSO）来优化UE到eNB的附着。但是，这些基于小区范围扩展（CRE）的优化方法并未考虑所有可能的UE到eNB的附件。在本文中，我们提出了一种不基于传统CRE方法的，用于优化UE附件的新方法，该方法考虑了所有UE附件的可能性，并且计算效率高。在示例网络中，我们将提出的方法与基于CRE的典型方法的性能进行了比较。在示例网络中还研究了静音模式选择，结果表明，将静音模式的数量限制为满足某些实际约束的集合可提供与始终选择最佳模式相关的几乎相同的性能。

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