Millimeter wave terminal test system and method based on extended compact range test

A terminal test, millimeter wave technology, applied in the transmission system, radio transmission system, transmission monitoring, etc., can solve the problem that the beam alignment scheme cannot be tested and evaluated, and achieve the effect of breaking through the performance limit

Inactive Publication Date: 2019-12-10
SHANGHAI RES CENT FOR WIRELESS COMM +1
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Problems solved by technology

[0008] However, in the existing compact field test system, the signal in only one direction reaches the millimeter-wave terminal under test, so it is impossible to test and evaluate the beam alignment scheme

Method used

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  • Millimeter wave terminal test system and method based on extended compact range test
  • Millimeter wave terminal test system and method based on extended compact range test
  • Millimeter wave terminal test system and method based on extended compact range test

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Embodiment Construction

[0044] The technical content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] As mentioned above, in the millimeter wave communication system, it is necessary to use narrow beams and beamforming in massive MIMO technology to overcome large signal attenuation, which requires beam alignment between the transmitter and receiver. The beam alignment operation is based on the periodic exchange of control information (signaling) between the transmitter and the receiver.

[0046] In the 5G standard, a synchronization signal block (SS block, abbreviated as SSB) and a synchronization signal burst (SS burst) are used to realize the transmission of a periodic synchronization signal of a 5G base station. Among them, the synchronization signal block is a group composed of 4 OFDM symbols in time and 240 subcarriers in frequency (that is, 20 resource blocks), as shown in Fig. 4(a) and Fig. 4(b)....

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Abstract

The invention discloses a millimeter wave terminal test system based on extended compact range test, and also discloses a corresponding millimeter wave terminal test method. The test system comprisesa wave-absorbing darkroom, a turntable controller, a plurality of feed antennas and a plurality of reflectors; the feed antenna and the reflector are distributed in the wave-absorbing darkroom, and the turntable controller controls the tested millimeter wave terminal to rotate in the horizontal direction and the vertical direction; multi-beam signals are dynamically generated between the pluralityof feed antennas and the plurality of reflectors and are used for testing the performance of the millimeter wave terminal. The performance limitation of an existing compact range testing system is broken through, and application and popularization of 5G are facilitated.

Description

technical field [0001] The present invention relates to a millimeter-wave terminal testing system, in particular to a millimeter-wave terminal testing system based on extended compact field testing, and also relates to a corresponding millimeter-wave terminal testing method, which belongs to the technical field of millimeter-wave communication. Background technique [0002] At present, the fifth-generation mobile communication network (5G) has entered the eve of commercialization, and various new 5G services, such as autonomous driving and virtual reality, are being actively promoted. In terms of frequency band allocation, 5G is divided into two parts: one is the sub-6GHz frequency band and the other is the millimeter wave frequency band. Since the sub-6Ghz frequency band is already very crowded, the mutual interference of various electronic devices is serious, while the millimeter wave frequency band is relatively "clean"; in addition, the millimeter wave frequency band can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04B17/327H04B7/0408H04W74/08
CPCH04B17/391H04B17/327H04B7/0408H04W74/0833
Inventor 易辉跃许晖张武雄
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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