Self-Configuration and Self-Optimization in LTE-Advanced Heterogeneous Networks
Self-Configuration and Self-Optimization in LTE-Advanced Heterogeneous Networks
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DOI：
10.1109/mcom.2013.6515045
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发表时间：
2013-05-01
影响因子：
11.2
通讯作者：
Chen, Hsiao-Hwa
中科院分区：
文献类型：
--
作者：
Peng, Mugen;Liang, Dong;Chen, Hsiao-Hwa
自组织网络（SON）技术能够最大限度地减少网络过程中的人为干预，旨在降低未来无线系统中服务提供商的运营成本。作为一种显著增强容量的经济有效手段，异构部署已在3GPP LTE-Advanced标准中定义，其中可以通过增加低功耗节点（如pico、femto和relay节点）的节点密度来实现性能提升。SON在未来的LTE-Advanced异构网络（也称为HetNets）中具有很大的应用潜力。本文综述了自配置和自优化HetNets的最新研究进展，并介绍了相应的SON架构。我们特别讨论了基于自配置son的HetNets中物理小区标识符自动分配和无线电资源配置问题。在自优化son方面，我们研究了HetNets中移动管理和节能的优化策略和算法问题。在文章的最后，我们展示了一个为评估SON技术而设计的测试平台，用它来演示SON算法的性能增益。
Self-organizing network, or SON, technology, which is able to minimize human intervention in networking processes, was proposed to reduce the operational costs for service providers in future wireless systems. As a cost-effective means to significantly enhance capacity, heterogeneous deployment has been defined in the 3GPP LTE-Advanced standard, where performance gains can be achieved through increasing node density with low-power nodes, such as pico, femto, and relay nodes. The SON has great potential for application in future LTE-Advanced heterogeneous networks, also called HetNets. In this article, state-of-the-art research on self-configuring and self-optimizing HetNets are surveyed, and their corresponding SON architectures are introduced. In particular, we discuss the issues of automatic physical cell identifier assignment and radio resource configuration in HetNets based on self-configuring SONs. As for self-optimizing SONs, we address the issues of optimization strategies and algorithms for mobility management and energy saving in HetNets. At the end of the article, we show a testbed designed for evaluating SON technology, with which the performance gain of SON algorithms is demonstrated.