SSB Beam Reporting With H/V Polarization-Aware Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face issues with sub-optimal beam selection due to significant horizontal/vertical (H/V) polarization imbalances in synchronization signal block (SSB) measurements, leading to poor downlink performance and link failures.
Innovation Solution
User equipment (UE) determines the horizontal/vertical polarization imbalance for each beam and ranks them based on this imbalance, reporting the best beam to the base station, allowing for better beam switching to maintain improved network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE selects a beam based solely on highest RSRP value, then the beam selection process is simple and fast, but the downlink performance deteriorates due to H/V polarization imbalance
Solution Approach 1:
The patent modifies the beam selection criteria by introducing a new parameter (H/V polarization imbalance ratio) alongside the existing RSRP parameter. The UE calculates the polarization imbalance ratio for each beam and uses both RSRP and this ratio to determine the best beam, thereby improving downlink performance while maintaining reasonable selection speed through efficient measurement and calculation procedures.
2Measurement precision
If the UE measures and reports H/V polarization imbalance for all beams, then beam selection accuracy improves, but the measurement and reporting complexity increases
Solution Approach 1:
The patent performs H/V polarization imbalance measurements and calculations in advance during the beam measurement phase, before final beam selection is made. The UE pre-calculates the polarization imbalance ratio for each beam and stores this information, so that when beam selection is needed, the UE can quickly reference these pre-computed values without performing complex measurements in real-time, thus reducing overall system complexity.
Solution Approach 2:
The patent implements a feedback mechanism where the UE measures H/V polarization imbalance for beams and reports this information back to the network. The network uses this feedback to make more accurate beam selection decisions. This feedback loop enables improved beam selection accuracy while the standardized reporting format controls the complexity of the measurement and reporting process.
Data Source
AI summary
Systems, apparatuses, methods, and computer programs for reference signal measurement reporting by a user equipment (UE) in a wireless communications system. In one aspect, the method can include actions of measuring a reference signal received power (RSRP) value for each of a plurality of synchronization signal block (SSB) beams from a base station, determining that a greatest RSRP value of the measured RSRP values is less than or equal to a predetermined threshold, responsive to the determination, calculating, based at least in part on the measured RSRP values and a horizontal/vertical (H/V) polarization imbalance for each of the plurality of SSB beams, a ranking of the plurality of SSB beams, and reporting at least one of the ranked plurality of SSB beams to the base station.