Hybrid Beam Pair Selection With Spatial Avoidance for Higher-Order MIMO
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beam selection and interference in higher-order multiple-input multiple-output (MIMO) communications, particularly in defining beam avoidance regions to optimize signal transmission and reception.
Innovation Solution
The implementation of a hybrid beamforming technique that involves transmitting and receiving measurement reports and configurations for candidate beam pairs, where each beam pair has spatial and polarization characteristics, with one beam outside a defined beam avoidance region based on the spatial characteristic of another beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If beam pairs are selected based on spatial characteristics without considering beam avoidance regions, then beam selection flexibility is improved, but interference between beams increases
Solution Approach 1:
The patent applies preliminary anti-action by pre-defining beam avoidance regions based on the spatial characteristics of first beams before selecting second beams. The network node determines beam avoidance regions for each first beam and explicitly excludes beams within these regions from selection, thereby preventing interference before it occurs rather than reacting to it afterward.
Solution Approach 2:
The patent implements local quality by creating spatially-specific avoidance regions around each first beam based on its unique spatial characteristics. Instead of applying a uniform avoidance rule across all beams, the system tailors the avoidance region to each individual beam's properties, allowing flexible beam selection in regions where interference is unlikely while maintaining protection in critical areas.
2Reliability
If beam avoidance regions are defined to reduce interference, then signal quality is improved, but beam selection complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-determining beam avoidance regions based on the spatial characteristics of first beams before the actual beam pair selection process. The network node calculates and stores these avoidance regions in advance, so that during beam selection, the system only needs to check whether candidate beams fall within these pre-defined regions, significantly simplifying the real-time decision-making process.
Solution Approach 2:
The patent introduces beam avoidance regions as an intermediary concept that mediates between the spatial characteristics of beams and the selection process. Rather than directly analyzing interference between all possible beam pairs, the system uses the avoidance region as an intermediate representation that encapsulates interference potential, making the selection process more manageable and efficient.
3Reliability
If multiple candidate beam pairs are evaluated for MIMO communication, then communication reliability is improved, but processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-defining beam avoidance regions and filtering out incompatible beam pairs before the actual MIMO configuration process. By establishing these avoidance regions in advance based on spatial characteristics, the system reduces the pool of candidate beam pairs that need to be evaluated, thereby maintaining communication reliability through careful selection while significantly reducing the time required for beam configuration.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a measurement report indicating a plurality of candidate beam pairs for multiple-input multiple-output (MIMO) communication with a network node, wherein the plurality of candidate beam pairs includes a first beam pair and a second beam pair, wherein each beam of the plurality of candidate beam pairs has a spatial characteristic and a polarization characteristic. The UE may receive a MIMO configuration for the first beam pair and the second beam pair, wherein a beam of the second beam pair is outside a beam avoidance region, wherein the beam avoidance region is defined based at least in part on the spatial characteristic of a beam of the first beam pair. Numerous other aspects are described.