Multi-Carrier Mobile Terminal Test System Using Segmented Master-Slave Architecture
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Solution Overview
Problem
The development of a mobile communication terminal test system capable of testing devices using multiple component carriers is complex and costly, and existing methods struggle to achieve compatibility with LTE-Advanced (LTE-A) by simply connecting multiple LTE terminal test devices.
Innovation Solution
A mobile communication terminal test system that transmits test signals using a primary and secondary component carrier, with dedicated test devices processing and measuring communication data, and synchronizing parameters to efficiently test the terminal's communication performance across multiple carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LTE terminal test devices are connected to test LTE-A terminals, then testing capability for multiple component carriers is achieved, but device complexity and cost increase
Solution Approach 1:
The test system is segmented into a master test device and slave test devices, where each device is responsible for specific component carriers. The master test device coordinates the overall testing process and manages test parameter configuration, while slave test devices handle specific carrier testing tasks. This segmentation allows the system to test multiple component carriers without requiring a completely new complex test system.
Solution Approach 2:
The test devices are designed with multi-functionality to handle both LTE and LTE-A testing requirements. The master test device can function as both a coordinator for multi-carrier testing and as a standalone LTE test device. Slave test devices can test multiple component carriers by being dynamically configured, making the system versatile without proportionally increasing complexity.
2Measurement precision
If dedicated test devices are used for each component carrier, then testing precision is improved, but device complexity increases
Solution Approach 1:
The testing function is segmented between master and slave devices, with each slave device dedicated to measuring communication data on specific component carriers. This segmentation allows precise measurement on each carrier while keeping individual device structures relatively simple, as each device only needs to handle specific carrier testing rather than all carriers.
Solution Approach 2:
The master test device acts as an intermediary that coordinates between the terminal under test and the slave test devices. It manages test parameter configuration, controls the testing process, and aggregates measurement results from slave devices. This intermediary role allows slave devices to focus on precise measurement without needing full testing capabilities, reducing their structural complexity.
Data Source
AI summary
Provided is a mobile communication terminal test system that transmits a test signal formed by a plurality of downlink component carriers including a primary component carrier (DL_CC1) and a secondary component carrier (DL_CC2) to a mobile communication terminal to test the mobile communication terminal. The mobile communication terminal test system includes a primary test device that transmits first communication data including first test data to the mobile communication terminal using the primary component carrier of the test signal and a secondary test device that transmits second communication data including second test data to the mobile communication terminal using the secondary component carrier of the test signal.