Mobile Terminal Testing Apparatus Signal Level Misidentification
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Solution Overview
Problem
In mobile terminal testing apparatuses, a difference in floor levels between downlink and uplink signals can lead to misidentification of low-level signals as high-level signals, which is not effectively addressed by existing technologies.
Innovation Solution
A mobile terminal testing apparatus with a pseudo base station unit, a test control unit, and a display unit that identifies and displays uplink and downlink signals within a multiplexed signal using distinct color schemes, area information, and time domain associations to prevent misidentification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the level of a multiplexed signal is displayed on the display device, then the signal level can be monitored, but when there is a difference in floor level between downlink and uplink signals, a low-level signal may be misidentified as a high-level signal
Solution Approach 1:
The patent divides the multiplexed signal display into separate uplink and downlink signal displays. The test control unit separates the composite signal into individual uplink and downlink components and displays them distinctly on the display device, allowing independent visualization of each signal type with its own floor level reference, thereby preventing misidentification between signals of different power levels
Solution Approach 2:
The patent introduces area information as an intermediary element that provides contextual identification for each signal segment. This area information acts as a mediator between the raw signal data and the display representation, clearly indicating whether a displayed signal level corresponds to uplink or downlink transmission, thus preventing misinterpretation of the signal levels
Data Source
AI summary
Provided are a mobile terminal testing apparatus, a mobile terminal testing system, and a control method for a mobile terminal testing apparatus which can prevent the level of the multiplexed signal transmitted and received to and from a mobile terminal from being misidentified. Provided is a mobile terminal testing apparatus which tests a waveform of a multiplexed signal obtained by multiplexing a uplink signal transmitted by a mobile terminal and a downlink signal transmitted to the mobile terminal by time division multiplexing, in which area information 21 of a first display mode indicating the uplink signal and area information 22 of a second display mode indicating the downlink signal are displayed in association with the waveform 23 of the multiplexed signal, on the display unit.