Integrated Lens Antenna Beam Scanning for Continuous Tracking
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Solution Overview
Problem
Existing wireless communications systems using lens antennas face challenges with narrow beams that are sensitive to small receiver movements, leading to power losses and quality of service degradation due to inadequate beam tracking and steering accuracy.
Innovation Solution
Implement continuous beam scanning techniques using a lens antenna to generate directional beams, where a network entity calculates a new beam based on UE measurements, adds it to a beam codebook, and adjusts beam directions through optimization procedures to maintain optimal communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If narrow beams are used to improve directional communication, then beam directionality is improved, but beam tracking accuracy deteriorates due to sensitivity to receiver movements
Solution Approach 1:
The patent implements continuous beam scanning that dynamically adjusts beam directions based on real-time UE measurements and feedback. The network entity continuously updates beam directions to track UE movements, transforming the static narrow beam into a dynamic tracking system that maintains accuracy despite receiver movement.
Solution Approach 2:
The system uses measurement reports from the UE containing beam quality metrics to provide feedback to the network entity. This feedback loop enables the network entity to calculate updated beam directions and adjust serving beams continuously, resolving the tracking accuracy issue caused by narrow beam sensitivity.
2Ease of operation
If discrete beam scanning is used to simplify system operation, then ease of operation is improved, but beam tracking continuity deteriorates leading to power losses
Solution Approach 1:
The patent implements continuous beam scanning where the network entity continuously transmits beams in multiple directions and continuously updates beam directions based on ongoing measurement reports. This continuous action eliminates the gaps and power losses associated with discrete beam switching while maintaining operational simplicity through automated feedback-driven adjustments.
3Device complexity
If fixed beam codebook is used to reduce complexity, then device complexity is reduced, but adaptability to UE movement deteriorates
Solution Approach 1:
The patent transforms the static beam codebook into a dynamic system where beam directions are continuously updated based on UE measurement feedback. The network entity calculates new beam directions from the codebook based on current UE positions, maintaining codebook structure while achieving adaptability to UE movement through continuous regeneration of beam directions.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a first measurement report to a network entity which includes a set of beam measurements corresponding to a set of beams of a beam codebook. The network entity may then perform a set of weighted measurement calculations to determine a first serving beam that is different from each of the set of beams of the existing beam codebook. The network entity may then transmit a first serving beam indication that instructs the UE to begin monitoring the first serving beam. The UE may then transmit a second measurement report to the network entity that includes a second set of beam measurements which includes measurements for the first serving beam. The network entity and the UE may then communicate via the first serving beam based on the measurements for the first serving beam satisfying a threshold.