Beamforming Control via Auxiliary Beam Monitoring
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Solution Overview
Problem
In radio communication networks, especially at higher frequencies, beamforming mechanisms face challenges in adapting to the relative positioning and movement of user equipment (UE) and base stations, leading to inefficiencies in signal transmission and reception.
Innovation Solution
A method where a radio communication device applies a beamforming pattern with a main beam and adjacent auxiliary beams, monitoring signals to reselect the main beam based on signal strength and relative movement, and adapts the angular region covered by auxiliary beams to optimize signal monitoring and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If beamforming is applied to focus transmit power in a certain spatial direction, then signal strength in the beam direction is increased, but the system becomes sensitive to relative positioning or orientation of sender and receiver
Solution Approach 1:
The patent divides the single main beam into multiple sub-beams or beam segments that can be independently controlled and steered. This segmentation allows the system to maintain focused signal strength in each direction while adapting to position changes by activating appropriate beam segments, thereby reducing sensitivity to relative positioning.
Solution Approach 2:
The patent implements dynamic beamforming where the beam direction and shape are continuously adjusted based on real-time channel conditions and relative positioning between transmitter and receiver. This dynamic adaptation allows the system to maintain optimal signal strength while compensating for position changes, reducing the harmful sensitivity effect.
2Reliability
If the beam direction is adapted to track moving UE, then signal transmission quality is maintained, but the complexity of beamforming control increases
Solution Approach 1:
The patent employs feedback mechanisms where the receiver reports channel quality indicators and position information back to the transmitter. Based on this feedback, the beamforming parameters are automatically adjusted to track the moving UE. This closed-loop control maintains transmission quality while automating the complexity, reducing the need for manual intervention.
Solution Approach 2:
The patent implements self-service beam tracking where the system automatically adjusts beam directions based on embedded positioning information in the received signals without requiring external control. The beamforming controller autonomously processes channel state information and reconfigures beams to maintain optimal quality, thereby managing complexity internally.
3Measurement precision
If multiple beams are monitored to detect UE position, then positioning accuracy is improved, but the time and computational resources required increase
Solution Approach 1:
The patent pre-calculates and prepares multiple candidate beam directions based on predicted UE movement patterns or historical position data. By having these beams pre-configured and ready, the system can quickly switch to the appropriate beam when UE position changes, achieving accurate positioning without the need to monitor and calculate all possible directions in real-time, thus reducing time consumption.
Data Source
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AI summary
A radio communication device applies a beamforming pattern defining plurality of beams (411, 412, 413, 414, 415, 416, 417). From the plurality of beams (411, 412, 413, 414, 415, 416, 417), the radio communication device selects at least one main beam (412) and a set of auxiliary beams (411, 413). Exclusively on the at least one main beam (412), the radio communication device sends radio transmissions to a further radio communication device (420). Further, the radio communication device monitors signals transmitted by the further communication device (420) on the at least one main beam (412) and the set of auxiliary beams (411, 413). Depending on the monitored signals, the communication device reselects at least one beam from the set of auxiliary beams as the at least one main beam.