Radio Resource Management Testing Using Angle of Arrival
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Solution Overview
Problem
In wireless communication systems, accurately configuring the signal-to-noise ratio (SNR) for User Equipment (UE) during two arrival of angles (2 AoA) testing is challenging, especially in an over-the-air (OTA) environment, due to difficulties in precisely managing the SNR at the UE baseband, which affects measurement accuracy and radio resource management.
Innovation Solution
The implementation of a method using time division multiplexing (TDM) for test signals from different cells, where signals like Synchronization Signal Blocks (SSBs) and Channel State Information-Reference Signals (CSI-RS) are transmitted with varying numbers and positions within Measurement Timing Configuration (MTC) windows, allowing independent SNR calculation for serving and neighbor cells, and utilizing the main and side lobes of antennas to receive signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional testing methods are used for 2 AoA testing, then measurement accuracy can be maintained, but SNR configuration becomes complex and difficult to manage
Solution Approach 1:
The patent segments the testing process by separating serving cell signals from neighbor cell signals in time using TDM. Each cell's signals are transmitted in separate time slots within the MTC window, allowing independent SNR configuration and calculation for each cell without interference from other cells, thus simplifying SNR management while maintaining measurement accuracy
Solution Approach 2:
The patent applies preliminary action by pre-configuring the number and positions of SSBs/CSI-RS within each cell's MTC window before transmission. This allows the UE to know in advance how many reference signals to expect from each cell and when they will occur, enabling accurate SNR calculation without complex real-time configuration adjustments
2Productivity
If signals from multiple cells are transmitted simultaneously, then testing can be performed, but SNR calculation becomes dependent and complex
Solution Approach 1:
The patent segments the time domain by dividing the MTC window into separate time slots for serving cell and neighbor cell signals. This temporal segmentation allows both cells to be tested within the same window while maintaining independent SNR calculation for each cell, reducing complexity while preserving testing efficiency
Solution Approach 2:
The patent uses the MTC window as an intermediary structure that accommodates multiple cell signals in an organized manner. The window provides a framework that defines the timing and positioning of signals from different cells, enabling the UE to systematically process and calculate SNR for each cell independently
3Ease of operation
If the same number of SSBs/CSI-RS are used for all cells, then configuration is simplified, but measurement accuracy for different cells cannot be independently optimized
Solution Approach 1:
The patent applies local quality by allowing each cell to have a different number and position of SSBs/CSI-RS within its designated time slot in the MTC window. This enables optimization of reference signal configuration for each specific cell's coverage and interference characteristics, improving measurement accuracy for each cell while maintaining overall configuration simplicity through the standardized TDM framework
Data Source
AI summary
A system, method, and apparatus is provided for performing testing using arrival of angles (AOA). The system, method, and apparatus can receive a first test signal from a first cell; receive a second test signal from a second cell; and perform a test based on AOA of the first test signal and the second test signal. At least one of the first test signal and the second test signal can include a channel state information-reference signal (CSI-RS) signal or a synchronization signal block (SSB) signal. The first test signal can include a different number of SSBs transmitted during an Measurement Timing Configuration (MTC) window when compared to the second test signal. The system, method, and apparatus can receive the first test signal and the second test signal in a time division multiple access (TDMA) manner. The first cell can include a serving cell and the second cell can include a neighboring cell of the serving cell. The system, method, and apparatus can receive the first test signal using a main lobe of an antenna and the second test signal using a side lobe of the antenna.