Test system and method for switching analog wireless channel

Abstract

The invention relates to a switching test system for simulating a wireless channel and a method thereof, wherein, the system comprises a resource management and service module (11), a low-level communication control module, a main control module (21) and an execution module (23); and the method comprises the following steps: the resource management and service module (11) forwards a test script to the main control module (21) by the low-level communication control module; and the main control module (21) controls the execution module (23) to perform phase-shifting and attenuation operations, and feeds back test results to the interface of an upper PC for real-time display. The method and the system can simultaneously realize the control over changes of amplitude and phase of wireless signals, and load different types of signal interferences by a signal source (26) to simulate external interferences of a real wireless scene, and more realistically simulate various wireless channel environments, thus improving the reliability of wired switching tests.

Description

Technical field [0001] The invention relates to the field of wireless communication testing, in particular to a switching test system and method for simulating wireless channels. Background technique [0002] In the field of wireless communication, handover testing of mobile communication base stations, including soft / hard handover testing, is undoubtedly the most important and most complex item in the entire system test. There are two traditional handover test methods: one is to make a call by the tester and move the test terminal between the various base stations to complete various types of handovers. Undoubtedly, the handover success rate of this test method is extremely high. Low, and the efficiency is not high, only basic simple tests can be achieved; another method is to simulate the wireless channel by adding attenuators, duplexers and combiners between multiple base stations and test terminals in the laboratory, Manually adjust the attenuator between the base station an...

AI Technical Summary

Problems solved by technology

There are two traditional handover test methods: one is to use the tester to call and move the test terminal between various base stations to actually complete various types of handovers. Undoubtedly, this test method has an extremely high handover success rate. Low, and the efficiency is not high, only basic simple test can be realized; another method is to simulate the wireless channel by adding attenuators, duplexers and combiners between multiple base stations and test terminals in the laboratory, Manually adjust the attenuator between the base station and the terminal to change the signal strength of different channels, thereby triggering the handover. Since this method can directly control the strength of the wireless signal, the test success rate is relatively high, but the test efficiency is relatively low, and generally it can only be used as a test method. A few test terminals and a small number of channel handover tests are very complex for multi-user handover; the current newer test method is to use a channel simulator to perform handover tests, but the overall test cost of this method is relatively high , and generally only 2 channels can be simulated, it is difficult to simulate the handover test of multiple users under multiple base stations

[0003] Chinese invention patent "a mobile communication base station testing system", Chinese application number CN200410086140.1, publication number CN1767683A, proposes an amplitude change control device that can simultaneously control the test terminal and the adjustable step attenuator to simulate the attenuation of the wireless channel, However, this patent has the following deficiencies: 1. The channel model is simple and can only control the amplitude, so it is difficult to truly simulate various complex wireless channel environments; 2. Less consideration is given to the external interference of the entire test, and a robust The mobile communication system must have strong anti-interference ability, so the reliability test of the system is slightly weak from the test point of view

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