Four-dimensional OTA performance test method for dynamic scene channel

Abstract

The invention discloses a four-dimensional OTA performance test method for a dynamic scene channel, which comprises the following steps of: constructing a time-domain non-stationary dynamic scene channel model, and selecting OTA probes with proper quantity, positions and power weights in a four-dimensional multi-probe anechoic chamber (4D-MPAC) test system through a probe selection algorithm; and finally, constructing a 4D-MPAC dynamic channel test system of a target channel in the DUT test area, thereby making a contribution to solving the OTA performance test problem of the current time-domain non-stationary channel. The invention aims to provide a 4D-MPAC method for a dynamic scene channel, which can effectively and accurately reproduce a target dynamic scene channel model in an anechoic chamber on the basis of reducing the cost of a test system as much as possible by constructing a dynamic scene channel model, and an index for determining the construction accuracy of the dynamic scene channel model is given.

Description

technical field [0001] The invention belongs to the technical field of wireless communication testing, and in particular relates to a four-dimensional air interface performance testing method for dynamic scene channels. Background technique [0002] With the fifth generation of mobile communication (5 th Generation, 5G) era is coming, the test principle of the new generation of mobile communication has become the focus of academia and industry in recent years, and the air interface (Over-The-Air, OTA) test is gradually replacing the conduction test, becoming 5G millimeter wave and The main test form of 6G system. Multi-Probe Anechoic Chamber (MPAC) is currently the most internationally recognized OTA performance testing method due to its high precision and wide application range. MPAC is to arrange multiple antenna probes at different positions in the anechoic chamber according to a certain spatial density, which can be spherical, flat, cylindrical or other distributions,...

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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