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首页> 外文期刊>Communications Magazine, IEEE >Interference management and performance analysis of UMTS/HSPA+ femtocells - [femtocell wireless communications]
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Interference management and performance analysis of UMTS/HSPA+ femtocells - [femtocell wireless communications]

机译：UMTS / HSPA +毫微微小区的干扰管理和性能分析-[毫微微小区无线通信]

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Femtocells are low-power cellular base stations that operate in licensed spectrum. They are typically deployed indoors to improve coverage and provide excellent user experience, including high data rates. Cellular operators benefit from reduced infrastructure and operational expenses for capacity upgrades and coverage improvements. Femtocells also bring unique challenges, such as unplanned deployment, user installation, restricted access, and interoperability with existing handsets and network infrastructure. Although femtocells may cause some interference to other users in the network, with the use of proper interference management techniques, this can be well controlled. We present interference management techniques for both downlink and uplink of femtocells operating based on 3GPP Release 7 standards (also known as HSPA+). Femtocell carrier selection and femtocell DL Tx power self-calibration are proposed as key interference management methods for downlink. For uplink interference management, adaptive attenuation at the femtocell and limiting the Tx power of the femtocell users are proposed. Different interference models and their analysis are presented. In addition, coverage performance and capacity results are presented to quantify the benefits of femtocells. We demonstrate that in addition to coverage enhancements, significant capacity improvements are achieved on both downlink and uplink when femtocells are deployed in 3G UMTS/HSPA+ networks.
机译：毫微微小区是在许可频谱中运行的低功率蜂窝基站。它们通常部署在室内，以提高覆盖范围并提供出色的用户体验，包括高数据速率。蜂窝运营商将从减少的基础架构和运营支出中受益，以进行容量升级和覆盖范围改善。毫微微小区还带来了独特的挑战，例如计划外的部署，用户安装，受限的访问以及与现有手机和网络基础设施的互操作性。尽管毫微微小区可能会对网络中的其他用户造成一些干扰，但是通过使用适当的干扰管理技术，可以对此进行很好的控制。我们介绍了基于3GPP Release 7标准（也称为HSPA +）运行的毫微微小区的下行链路和上行链路的干扰管理技术。提出了毫微微小区载波选择和毫微微小区DL Tx功率自校准作为下行链路的关键干扰管理方法。对于上行链路干扰管理，提出了在毫微微小区处的自适应衰减并限制毫微微小区用户的Tx功率。介绍了不同的干扰模型及其分析。此外，还介绍了覆盖性能和容量结果，以量化飞蜂窝的优势。我们证明，在3G UMTS / HSPA +网络中部署毫微微小区的同时，除了覆盖范围的增强之外，下行链路和上行链路的容量都得到了显着改善。

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  • 来源
    《Communications Magazine, IEEE》 |2009年第9期|p.102-109|共8页
  • 作者

    Yavuz M.; Meshkati F.; Nanda S.; Pokhariyal A.; Johnson N.; Raghothaman B.; Richardson A.;

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    is a principal engineer and manager in Corporate Research and Development (CR&D) at Qualcomm, where he is currently working on interference and mobility management for femtocells. He received a B.Sc. degree in electrical and electronics engineering from Middle East Technical Universiyt, Turkey, in 1994, and M.S. and Ph.D. degrees in electrical engineering: systems from the University of Michigan, Ann Arbor in 1996 and 1999, respectively. From 1997 to 1999 he was a full-time research scientist;

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