Test method and device for wireless indexes of active antenna system

Abstract

The invention discloses a test method and a device for wireless indexes of an active antenna system. An over the air (OTA) test is used for testing spatial characters of the active antenna system and a near field coupling mode is used for testing radio frequency indexes of the active antenna system. The invention also provides a near field coupling test device which is a radio frequency testing cover. By the aid of the near field coupling test device, the radio frequency index test can be conducted to the active antenna system which is an integral device of an antenna and a multi-channel transceiver under the condition that any extra test interfaces are not required to be added. According to the comprehensive test method, the advantages of the OTA test and the near field coupling mode are combined fully, the defects and the problems of the OTA test and the near field coupling mode are overcome, and the test efficiency and the test cost are optimized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for testing wireless indicators of an active antenna system. Background technique [0002] Active Antenna System (AAS) is a base station communication subsystem integrating multi-channel transceiver and base station antenna. It is an integrated device of antenna and multi-channel transceiver. The interface between them is an internal interface. Engineering It is difficult to directly test the RF port on the Internet, which brings challenges to its test. [0003] At present, the test of traditional base stations is generally divided into base station antenna test and base station equipment test. [0004] Most of the base station antenna tests currently use the OTA (Over The Air, spatial radio frequency) test method. This method can also be used for AAS testing. It is a method that can comprehensively test the wireless performance of AAS, includi...

AI Technical Summary

Problems solved by technology

[0005] 1) In order to meet the requirements of test accuracy and repeatability, there are certain requirements for the test environment. For example, indoor far-field testing requires a darkroom of a certain size; while outdoor far-field testing is easily affected by weather and external interference signals. This will bring problems in terms of test cost and test efficiency;

[0006] 2) Each test requires a large amount of data support, and it takes a long time to get the results;

[0007] 3) For some test items of AAS, such as the reliability test in the CE certification experiment, etc., it needs to be carried out in a closed high and low temperature environment, which is difficult to complete in the OTA test environment;

[0010] 1) Increase the coupling test port, which destroys the topology of AAS integration; at the same time, it increases the complexity of the design, affects the integration of equipment, and the coupling method will cause unnecessary loss;

[0011] 2) Due to the different coupling methods and coupling parameters adopted by various equipment manufacturers, it is difficult to unify test certification and test specifications;

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