OTA Mobile Terminal Testing Device with Call Reconnection Control
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Solution Overview
Problem
Existing mobile terminal testing devices under OTA environments face issues with call disconnection during measurements, leading to data loss and reduced accuracy due to physical and short-term factors, such as rotation angle changes, without the capability to reconnect calls and maintain beam-lock states necessary for accurate TRP measurements.
Innovation Solution
A mobile terminal testing device equipped with scanning mechanisms to rotate the terminal to face all preset orientations, connected measuring devices for signal transmission and reception, disconnection detection, reconnection control, and measurement return capabilities to ensure continuous data collection and beam-lock maintenance during TRP measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement is performed while changing angle of positioner during OTA test, then comprehensive radiation pattern data is obtained, but call disconnection occurs due to physical factors like rotation angle
Solution Approach 1:
The system performs preliminary actions by detecting call connection status continuously during measurement and preparing reconnection procedures in advance. When disconnection is detected, the system has already established the framework for reconnection, minimizing measurement interruption and maintaining overall reliability while completing the comprehensive angular measurement sequence.
2Productivity
If measurement operation continues after call disconnection, then measurement process is maintained, but measurement data reliability is lowered
Solution Approach 1:
The system implements feedback by continuously monitoring call connection status during measurement operations. When disconnection is detected, the system provides feedback through reconnection procedures and measurement return control, ensuring that only reliable measurement data is collected while maintaining overall measurement productivity through automated recovery processes.
3Reliability
If reconnection control is implemented during measurement, then measurement data reliability is improved, but measurement time increases due to reconnection procedures
Solution Approach 1:
The system employs a flexible measurement control framework that can adaptively adjust the measurement process. When reconnection is successful, the system flexibly returns to the appropriate measurement position, minimizing time loss by avoiding complete measurement sequences and only repeating necessary portions, thus balancing reliability improvement with time efficiency.
Data Source
AI summary
A measuring device 1 includes an integrated control device 10 that performs control to measure a specific measurement item by performing a measurement operation, a predetermined number of times, of transmitting a test signal and receiving a signal under measurement transmitted from a DUT 100 at a measurement position where the DUT 100, which is rotated by a DUT scanning mechanism 56 in an OTA chamber 50, faces a desired orientation; a disconnection detection unit 18a that detects disconnection of call connection at the measurement position; a reconnection control unit 18b that performs reconnection of the call connection in a case where the disconnection of the call connection is detected; and a measurement return control unit 18c that returns to measurement at a subsequent measurement position from a measurement position where the disconnection of the call connection is detected after reconnection.