Mobile Terminal Testing Apparatus for MU-MIMO Interference Simulation
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Solution Overview
Problem
Simulating interference between multiple mobile communication terminals using Multi-User-MIMO technology requires multiple mobile terminal testing apparatuses, increasing costs due to the need for synchronized common and specific signal portions.
Innovation Solution
A mobile terminal testing apparatus that initializes and adjusts signal output levels of cells to simulate interference states, combining multiple cells without requiring multiple apparatuses, using a cell initialization processing unit and cell combination processing unit to set and adjust parameters for interference simulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple mobile terminal testing apparatuses are connected to simulate interference states for MU-MIMO testing, then the interference simulation capability is improved, but the device complexity and cost increase
Solution Approach 1:
The patent combines multiple cell signal generation functions into a single mobile terminal testing apparatus. The cell signal generating unit can generate signals for multiple cells (e.g., first cell and second cell) simultaneously, eliminating the need for multiple separate testing apparatuses while maintaining the ability to simulate interference states for MU-MIMO testing.
Solution Approach 2:
The mobile terminal testing apparatus is designed with multi-functionality to perform various testing scenarios including single-cell testing and multi-cell interference simulation. The cell signal generating unit can adaptively generate signals for different cells based on testing requirements, making a single apparatus capable of replacing multiple specialized apparatuses.
2Measurement precision
If multiple mobile terminal testing apparatuses are used for synchronized signal generation, then the interference simulation accuracy is improved, but the cost increases
Solution Approach 1:
The patent merges the signal generation capabilities of multiple apparatuses into one unified cell signal generating unit that can produce synchronized signals for multiple cells. This maintains measurement precision by ensuring proper signal synchronization while reducing the quantity of apparatuses from multiple to single unit.
3Device complexity
If a single mobile terminal testing apparatus generates signals for multiple cells, then the device complexity is reduced, but the signal generation capability requires advanced processing
Solution Approach 1:
The patent replaces physical signal generation hardware (multiple separate apparatuses) with advanced signal processing software algorithms. The cell signal generating unit uses digital signal processing techniques to generate and synchronize signals for multiple cells, substituting mechanical/hardware complexity with computational processing complexity.
Data Source
AI summary
A mobile terminal testing apparatus that is capable of simulating a state where an electric wave to multiple mobile communication terminals causes interference. The mobile terminal testing apparatus includes: a scenario processing unit that controls each unit of an apparatus in order to perform each procedure for testing according to a test scenario; a cell initialization processing unit that initializes a cell that is subject to interference and an interfering cell that interferes with the cell that is subject to the interference, with a parameter for the cell that is subject to the interference, and a parameter for the interfering cell; and a cell combination processing unit that adjusts output levels of a signal of the cell that is subject to the interference and a signal of the interfering cell and performs combination in order to simulate an interference state.