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HSDPA Macro-to-Indoor Mobility Measurements Using WCDMA Repeater and Pico Cell

机译:使用WCDma中继器和微微蜂窝的HsDpa宏到室内移动性测量

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摘要

With the advancements in DSP, mobile terminals are becoming smaller and smarter every day. The more the mobile becoming data centric, the more is the number of users from indoors. From radio network planning point of view, these advancements introduced two major demands on mobile communication networks: faster and more spectral efficient networks, and better quality of service in indoors. This thesis studies the implementation of a dedicated indoor system and a WCDMA outdoor-to-indoor analogue repeater for a university building at the cell edge of an outdoor macrocell. The main emphasis is to compare the performance of the two systems in the cell change location when the user enters the indoor from outdoor coverage area. The thesis is divided into two parts. In the literature study part, the fundamental principles of wireless communication and basics of UMTS are resented. The architecture and basic concepts of HSDPA and guidelines to radio network planning are also discussed. In the measurement campaign part, the pico cell and repeater implementations for indoor coverage are studied, with focus on the HS-DSCH cell change region and the results are compared with the macrocell coverage scenario. The results of measurement rounds carried out under loaded scenario and with lower category mobiles than the one used for the study are also discussed. The study indicates that the HS-DSCH cell change introduces a momentary drop in throughput of pico cell scenario while the user movement from outdoor coverage to repeater coverage area is seamless. The study also highlights the importance of proper repeater donor antenna implementation. The effect of disoriented donor antenna on CQI value and hence the throughput of HSDPA systems is explicit from the results. It is shown from the study that the interference through repeaters also affects the region under the macrocell that is close to the repeater antenna. According to the results, dedicated indoor base stations are a good choice for indoors with high capacity requirements while repeater offers better coverage solution at lower cost. The conclusion is in accordance with the previous studies carried out with repeaters and dedicated indoor base stations. /Kir11
机译:随着DSP的进步,移动终端每天都变得越来越小,越来越智能。移动设备以数据为中心的程度越高,室内用户的数量就越多。从无线电网络规划的角度来看,这些进步对移动通信网络提出了两个主要要求:更快,频谱效率更高的网络以及室内更好的服务质量。本文研究了用于大学建筑的专用室内系统和WCDMA室外至室内模拟中继器在室外宏蜂窝小区边缘的实现。主要重点是当用户从室外覆盖区域进入室内时,比较两个系统在小区更换位置的性能。论文分为两个部分。在文献研究部分中,对无线通信的基本原理和UMTS的基础表示了愤慨。还讨论了HSDPA的体系结构和基本概念以及无线电网络规划指南。在测量活动部分,针对室内覆盖的微微小区和中继器实现进行了研究,重点是HS-DSCH小区变化区域,并将结果与​​宏小区覆盖情况进行了比较。还讨论了在负载情况下使用比本研究中使用的手机低类别的手机进行的测量回合的结果。研究表明,HS-DSCH小区的变化导致了微微小区场景吞吐量的瞬时下降,而用户从室外覆盖区到中继器覆盖区的移动是无缝的。该研究还强调了正确使用中继器施主天线的重要性。结果表明,未定向供体天线对CQI值的影响以及对HSDPA系统吞吐量的影响是显而易见的。研究表明,通过中继器的干扰还会影响宏小区下方靠近中继器天线的区域。根据结果​​,专用室内基站是具有高容量需求的室内的不错选择,而中继器以较低的成本提供了更好的覆盖解决方案。该结论与先前对转发器和专用室内基站进行的研究一致。 / Kir11

著录项

  • 作者

    Subramaniam Rajadurai;

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  • 年度 2011
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  • 原文格式 PDF
  • 正文语种 en
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