Indoor simulation testing method for communication distance of radio station

Abstract

The invention provides an indoor simulation testing method for a communication distance of a radio station. A system according to the invention comprises a radio station I, a radio station II, an adjustable attenuator and a wireless channel simulator. The radio station I transmits a testing signal to the adjustable attenuator. After attenuation processing is performed on the testing signal through adjusting the attenuation value of the adjustable attenuator, the processed testing signal is transmitted to the wireless channel simulator. Through loading a corresponding model, the wireless channel simulator simulates a fading characteristic, a time delay characteristic and a frequency shifting characteristic of a radio wave in different propagation environment conditions. After the testing signal is processed, the processed testing signal is transmitted to the radio station II. The indoor simulation testing method has outstanding advantages of high flexibility in setting testing conditions (such as testing field landform, metrological environment and ionosphere change), high ergodicity in setting the testing conditions, high repeatability in setting the testing condition, high testing result precision, etc.

Description

technical field [0001] The invention relates to an indoor simulation test method for a radio communication distance, in particular to a radio communication distance simulation test activity using a wireless channel emulator. Background technique [0002] In the radio performance index test activities, the radio communication distance test is an important content, and the radio communication distance is also one of the key indicators of the radio station. At present, there are two main ways to test the communication distance of radio stations: [0003] The first is to carry out in the field actual site, formulate a test plan according to the requirements of the radio station and the working environment conditions, select a number of specific test sites and meteorological environment and other conditions during the test, and pass the comprehensive evaluation of multiple tests, and finally get the communication distance index of the radio station. Test layout like figure 1 sh...

AI Technical Summary

Problems solved by technology

[0004] 1. It is necessary to go through various test conditions during the test activities, such as the selection of test sites and weather environments. This requires multiple site changes and multiple selection of weather environments, which increases the difficulty of test support, increases material consumption, and reduces test efficiency.

[0005] 2. Due to the limitation of test time and place, it is impossible to go through all kinds of test conditions in the selected test sites, meteorological environment and other conditions. It can only represent a small number of sample conditions, so that it is impossible to test the radio station in various test conditions more comprehensively. Communication distance under

[0006] 3. When working in the field, due to various uncertain factors such as meteorological environment and ionospheric changes, the controllability of the test conditions is poor, and the test conditions are difficult to reproduce. In the subsequent data analysis and processing process, it is time to analyze the influence of various factors on the test results Increased difficulty

The advantage of this method is that it saves a lot of manpower and material resources, the test is easy to organize, and the repeatability of test activities is good. However, because the attenuator is used to adjust the attenuation to simulate the propagation situation between stations, it cannot accurately reflect the situation of the station in the actual scene. The accuracy of the test results is not high, only approximate values ​​can be given

Images