5G Beam Selection Database for Interference Mitigation
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Solution Overview
Problem
In 5G mobile communication systems, beam selection for radio communication apparatuses is challenging due to high frequency band propagation losses and interference between transmission and reception points, requiring an efficient method to ensure reception quality and minimize interference.
Innovation Solution
A control apparatus and method that acquires measurement results on reception qualities of multiple beams, updates a database with information on beam relationships across various propagation environments, and performs selection processing to choose an appropriate beam, considering both reception quality and interference mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used to compensate for propagation loss in high frequency bands, then reception quality is improved, but interference between multiple beams increases
Solution Approach 1:
The system measures reception quality for multiple beams and uses this feedback to dynamically select the optimal beam. The base station transmits beam information and reception quality measurements, and the terminal apparatus reports back the measured values, enabling adaptive beam selection that balances reception quality and interference mitigation
Solution Approach 2:
The system changes beam parameters (direction, angle, amplitude) to optimize communication. By adjusting beamforming parameters and selecting from multiple beam candidates with different characteristics, the system can adapt to varying propagation conditions while managing interference between overlapping beams
2Area of stationary object
If multiple beams are used to ensure coverage area, then coverage is improved, but interference between beams in overlapping areas increases
Solution Approach 1:
The coverage area is divided into multiple beam segments, each responsible for a specific direction or region. By segmenting the overall coverage into discrete beams and selecting appropriate combinations, the system can ensure comprehensive coverage while managing interference between adjacent beam segments through measured-based selection
3Reliability
If beam selection is performed based on measurement results, then reception quality is maintained, but system complexity increases
Solution Approach 1:
The terminal apparatus performs self-measurement of reception quality for multiple beams and reports results to the base station. This self-service approach distributes the measurement burden to the terminal, reducing the complexity burden on the base station while maintaining reliable beam selection based on actual measured performance
Data Source
AI summary
Provided is a control apparatus configured to acquire a measurement result including information on reception qualities of a plurality of beams, update a database including information representing a relationship between the plurality of beams for each of a plurality of propagation environments, based on the measurement result, and perform selection processing for selecting a beam using the database.