Beam Management with Measurement Aging
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Solution Overview
Problem
In mmWave communications, the frequent need for beam sweeping to measure channel quality leads to significant overhead and latency, especially when channels change rapidly due to user movement or environmental changes, causing outdated beam measurements that can result in reduced signal quality and potential outages.
Innovation Solution
Implementing a method where electronic devices adjust signal quality measurements based on measurement times and positional information, using a penalization factor to discourage reliance on outdated measurements, and updating databases with adjusted signal quality measurements to determine the best beam for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam sweeping is performed frequently to measure channel quality, then measurement precision is improved, but overhead and latency increase
Solution Approach 1:
The system performs preliminary beam sweeping measurements and stores them in a database. When channel measurement is needed, it retrieves pre-stored measurements instead of performing new beam sweeping, thereby reducing latency while maintaining measurement availability.
Solution Approach 2:
The patent creates a copy of channel measurement data by storing measurements in a database for future retrieval. This allows the system to use copied measurement data instead of performing new measurements, reducing overhead and latency while maintaining measurement precision when needed.
2Reliability
If beam sweeping is performed frequently to maintain accurate measurements, then reliability is improved, but overhead increases
Solution Approach 1:
The system performs beam sweeping measurements in advance and stores them in a database. When channel conditions are stable, it retrieves pre-stored measurements instead of performing new beam sweeping, thereby maintaining reliability while reducing overhead and complexity.
Solution Approach 2:
The patent creates copies of measurement data by storing them in a database for future use. This allows the system to maintain reliable beam alignment information without repeatedly performing complex beam sweeping procedures, thus reducing overhead while preserving reliability.
3Productivity
If outdated measurements are used to reduce beam sweeping frequency, then overhead is reduced, but measurement precision deteriorates
Solution Approach 1:
The system implements feedback by comparing stored measurement data with current channel conditions. When environmental changes are detected, it triggers new beam sweeping measurements to update the database, ensuring measurement precision is maintained while optimizing beam sweeping frequency for better efficiency.
Data Source
AI summary
A method for operating an electronic device comprises obtaining information about signal quality measurements associated with a channel; generating newly obtained signal quality measurements based on a beam-sweeping procedure, wherein each signal quality measurement is associated with a respective measurement time and a respective transmit beam; adjusting the newly obtained signal quality measurements based on the measurement times and positional information of the electronic device; and updating a first measurement database of signal quality measurements with the adjusted signal quality measurements.