Dynamic Beamforming via UE Feedback for Millimeter Wave Reliability
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Solution Overview
Problem
Conventional beamforming techniques in wireless communications are sub-optimal for certain use cases, particularly in millimeter wave frequencies, where increased signal attenuation and path losses necessitate improved methods for dynamic beam formation to enhance communication reliability and rate.
Innovation Solution
User equipment (UE) measures and reports beam combination parameters to a base station, which uses this information to generate a dynamic beam by determining power delay profiles, timing, and frequency offsets, allowing for optimal beam configuration and combination across multiple component carriers or subbands in carrier aggregation configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional beamforming techniques are used, then device complexity is reduced, but communication reliability deteriorates due to signal attenuation and path losses in millimeter wave frequencies
Solution Approach 1:
The patent implements dynamic beamforming where the base station generates and configures beams adaptively based on real-time channel conditions and UE feedback. The beam configuration includes dynamic parameters such as beam indices, power delay profiles, timing offsets, and frequency offsets that are adjusted continuously to optimize communication reliability in millimeter wave environments
Solution Approach 2:
The patent employs feedback mechanisms where the UE measures channel conditions and reports beam combination parameters, signal quality metrics, and channel state information to the base station. This feedback enables the base station to generate optimized dynamic beams that compensate for signal attenuation and path losses, directly improving communication reliability
2Productivity
If dynamic beam formation with multiple beams is implemented, then communication rate is improved, but measurement and reporting complexity increases
Solution Approach 1:
The patent segments the beam measurement and reporting process into distinct components: the UE measures individual beams in a codebook, evaluates signal quality metrics for each beam, and reports results in structured formats. This segmentation allows systematic handling of multiple beams while managing measurement complexity through organized procedures
Solution Approach 2:
The patent implements partial measurement approaches where the UE measures and reports on a subset of beams rather than exhaustively measuring all possible beams. The UE identifies a limited set of candidate beams with acceptable signal quality thresholds, reducing measurement and reporting overhead while maintaining communication rate through selective beam optimization
3Adaptability or versatility
If beam combination parameters are reported for each component carrier in carrier aggregation, then adaptability is improved, but feedback overhead increases
Solution Approach 1:
The patent implements universal feedback mechanisms where the UE reports beam combination parameters that can be applied across multiple component carriers in carrier aggregation configurations. The feedback structure allows a single set of beam measurements and parameters to serve multiple carriers, reducing redundant feedback overhead while maintaining adaptability through carrier-specific parameter overrides when necessary
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to measure and report a beam combination parameter to a base station to improve generation of a dynamic beam for beamformed communications. In some examples, the UE may measure the beam combination parameter in terms of angular spread/coverage area of individual beams, array or signal gains at antennas or panels of the UE, additional panel/antenna module related information, etc. Based on the reported beam combination, the base station may generate the dynamic beam and indicate a beam configuration to the UE for subsequent communications. In some examples, distinct beam combination parameters may be reported for each component carrier or subband in a carrier aggregation (CA) configuration (e.g., inter-band CA or intra-band CA).