Fast test method of Massive MIMO end-to-end performance

Abstract

The invention provides a fast test method of Massive MIMO end-to-end performance. The method comprises the following steps: firstly, dividing each path of original signals sent by a base station intoseveral paths of radio frequency signals, and determining the phase and amplitude of each path of radio frequency signals; then controlling each path of radio frequency signals according to the determined phase and amplitude of each path of radio frequency signals; and finally merging the several paths of radio frequency signals, and outputting the merged radio frequency signals to a mobile terminal. Therefore, the spatial position change between the mobile terminal and the base station is simulated to form MU-MIMO and 3D-Beamforming. According to the fast test method provided by the invention, the OTA is replaced with a conduction scheme, so that a end-to-end performance simple test can be quickly completed, and the operation is simple.

Description

technical field [0001] The invention belongs to the technical field of antenna testing, in particular to a rapid testing method for Massive MIMO end-to-end performance. Background technique [0002] There are two key technologies in 5G Massive MIMO: MU-MIMO (multi-user) and 3D-Beamforming (3D beamforming), which can increase network capacity through multi-user space division multiplexing gain, and the latter can achieve coverage in multiple scenarios Require. Therefore, in the research and development stage of base stations or terminals, end-to-end performance tests are often based on these two key technologies to test user rate and throughput. However, the channel scenarios of 3GPP are complex, and the research and development stage often needs to quickly verify the performance under beamforming. So a simple and fast way to test is needed. [0003] Such as figure 1 As shown, the current mainstream MIMO performance test method is to adopt the MIMO OTA scheme, by distribut...

AI Technical Summary

Problems solved by technology

[0004] 1. In order to realize the 3D channel model, a sufficient number of probes need to be placed on the entire spherical surface or horizontal and vertical surfaces, which is expensive;

[0005] 2. The construction of the OTA system is complex and the test is inflexible, which brings great challenges to the testing of many R&D and urgent tasks

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