A four-dimensional air interface performance testing method for channels in dynamic scenarios

Abstract

The invention discloses a four-dimensional air interface performance testing method of a dynamic scene channel. By constructing a time-domain non-stationary dynamic scene channel model, a probe selection algorithm is used to select a suitable number and position in a four-dimensional multi-probe anechoic chamber method (4D-MPAC) test system. The over-the-air (OTA) probe with power weights finally builds a 4D-MPAC dynamic channel test system for the target channel in the DUT test area, which contributes to solving the current OTA performance test problems of non-stationary channels in the time domain. The purpose of the present invention is to provide a four-dimensional multi-probe anechoic chamber method (4D-MPAC) of a dynamic scene channel, by constructing a dynamic scene channel model, on the basis of reducing the cost of the test system as much as possible, it can be effectively and accurately reproduced in the darkroom The target dynamic scene channel model is obtained, and the index for judging the construction accuracy of the dynamic scene channel model is given.

Description

Technical field [0001] The present invention belongs to the field of wireless communication test technology, in particular to a dynamic scene channel four-dimensional air interface performance test method. Background [0002] With the fifth generation of mobile communications (5 th With the advent of the Generation, 5G) era, the test principle of a new generation of mobile communications has become the focus of attention in academia and industry in recent years, and the air interface (Over-The-Air, OTA) test is gradually replacing conducted testing and becoming the main test form of 5G millimeter wave and 6G systems. Multi-ProbeAnechoic Chamber (MPAC) is currently the most internationally recognized OTA performance test method due to its high accuracy and wide range of applications. MPAC is to arrange multiple antenna probes at different locations in the darkroom according to a certain spatial density, which can be spherical, flat, cylinder or other distributions, simulate multip...

AI Technical Summary

Problems solved by technology

In the 6G vision, more high-speed sports scenes will be introduced. In addition to high-speed rail, the air-space-ground-sea integration scene will also include satellites, drones, vehicles, ships and other diversified terminals, such as drone communication. The channel has three-dimensional deployment, high mobility, space-time non-stationarity, etc., which may bring about greater Doppler frequency shift, and the spatial characteristics of the channel change more significantly, which brings new challenges to OTA performance testing

Up to now, most of the studies have not considered the time-varying scene of spatial parameters, and it is difficult to simulate the dynamic changes of spatial parameters such as angle of arrival and angle of departure during the movement of the device. equipment, cannot accurately test its communication performance

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