Developing a MIMO Test Methodology using Dynamic Channel Models and Link Adaptation

M. Foegelle, T. Hertel, P. Kyösti, Jukka Kyröläinen, D. Reed
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引用次数: 1

Abstract

Industry standards for over-the-air testing of LTE MIMO devices have used multi-probe anechoic chamber based systems, also known as the boundary array method, to evaluate device performance in a spatially static environment. The spatial distribution of clusters in the chosen channel models, such as the SCME Urban Micro and Urban Macro channel models, are fixed, and the only geometric variation relative to the device under test is accomplished by physically rotating the device in the generated test environment. For 5G FR1 testing, 3GPP has adopted a similar approach. However, in an effort to meet the desire of the North American cellular network operators to better understand the behavior of a device on a realistic network, the CTIA MIMO OTA working group is developing a test plan based on the use of dynamic channel models that vary the spatial configuration as a function of time, and allowing the communication tester base station emulator to perform link adaptation, allowing the device to choose the best MIMO or SISO diversity mode and data rate for a given channel condition. This paper will discuss the design considerations associated with developing this new channel model and the related test system requirements.
利用动态信道模型和链路自适应开发MIMO测试方法
LTE MIMO设备空中测试的行业标准已经使用了基于多探头消声室的系统,也称为边界阵列方法,来评估空间静态环境下的设备性能。在所选择的通道模型(如SCME城市微观和城市宏观通道模型)中,集群的空间分布是固定的,相对于被测设备的唯一几何变化是通过在生成的测试环境中物理旋转设备来完成的。对于5G FR1测试,3GPP采用了类似的方法。然而,为了满足北美蜂窝网络运营商更好地理解设备在现实网络上的行为的愿望,CTIA MIMO OTA工作组正在开发一种基于使用动态信道模型的测试计划,该模型随时间变化空间配置,并允许通信测试基站模拟器执行链路适应。允许设备在给定信道条件下选择最佳的MIMO或SISO分集模式和数据速率。本文将讨论与开发这种新通道模型和相关测试系统要求相关的设计考虑因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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