Mobile Terminal Testing Apparatus for Carrier Aggregation
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Solution Overview
Problem
Current mobile terminal testing apparatuses face operability issues during In-Band Emission (IBE) measurement for uplink carrier aggregation, as the number of component carriers increases, requiring manual parameter setting for each carrier, leading to inefficient command input operations and inaccurate measurements due to unknown local oscillator frequencies.
Innovation Solution
A mobile terminal testing apparatus capable of batch measurement across a continuous frequency band, utilizing a call processing unit, reception unit, detection unit, and user interface to input and display results for multiple parameters, including power measurements for allocated and non-allocated frequencies, carrier leakage, and image, allowing for automated detection and reduced operator input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual parameter setting is performed for each component carrier, then measurement accuracy can be maintained, but operator workload increases and operability deteriorates
Solution Approach 1:
The detection unit automatically detects the LO frequency of the mobile terminal and determines which component carrier contains the LO frequency without operator intervention. The system self-configures the measurement parameters based on the detected LO frequency, eliminating the need for manual parameter setting while maintaining measurement accuracy.
Solution Approach 2:
The system dynamically changes measurement parameters based on the detected LO frequency. When the LO frequency is detected to be in a specific component carrier, the system automatically adjusts which carriers to measure and what parameters to apply, transforming manual parameter configuration into automatic parameter adaptation.
2Measurement precision
If the LO frequency is unknown, then measurement cannot be performed accurately, but requiring users to know terminal specifications reduces accessibility
Solution Approach 1:
The detection unit acts as an intermediary that automatically obtains the LO frequency information from the mobile terminal through signal analysis. This intermediary function eliminates the need for users to directly know or input terminal specifications, while still enabling accurate measurements by obtaining the necessary LO frequency data.
Solution Approach 2:
The system replaces the manual mechanical process of users looking up and inputting terminal specifications with an automated electronic detection process. The detection unit electronically analyzes the terminal's signal to extract LO frequency information, substituting human effort with automated signal processing.
3Ease of operation
If batch measurement is implemented, then operability improves and workload reduces, but measurement precision may be compromised
Solution Approach 1:
The batch measurement process is segmented into distinct phases: first detecting the LO frequency, then determining which component carrier contains the LO frequency, and finally performing measurements on specific carriers with appropriate parameters. This segmentation allows automated batch processing while maintaining the precision of individual measurements by applying carrier-specific settings.
Solution Approach 2:
The batch measurement system dynamically adapts its measurement configuration based on the detected LO frequency. Rather than using fixed uniform parameters for all carriers, the system dynamically determines which carriers to measure and what parameters to apply based on real-time detection results, maintaining precision while enabling batch processing.
Data Source
AI summary
An object of the present invention is to provide a mobile terminal testing apparatus capable of improving operability. A mobile terminal testing apparatus according to the present invention is a mobile terminal testing apparatus (1) which uses one of a plurality of component carriers in carrier aggregation as a primary component carrier and the other component carriers as secondary component carriers, and makes a call connection with a mobile terminal (2) to test the carrier aggregation, the mobile terminal has a local oscillation frequency in a continuous frequency band from the primary component carrier to the secondary component carriers, and the input unit (15) collectively sets the desired parameters for the continuous frequency band.