Beam Sensing for CSI Selection Between Wide and Narrow Beams

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Solution Overview

Problem

Existing beamforming technologies in wireless communication systems, particularly in NR 5G, face inaccuracies in channel state information (CSI) due to the 'wide and narrow beam' effect, where static wide beams used for tracking reference signals (TRS) do not accurately match the performance of dynamic narrow beams for physical downlink shared channels (PDSCH), leading to suboptimal communication quality.

Innovation Solution

A method for beam sensing that involves obtaining first and second beam feature sets related to the current network standard, and selecting one as the acquisition source of CSI based on preset conditions, ensuring accurate determination of CSI by distinguishing between static and dynamic beam features.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If static wide beams are used for tracking reference signals (TRS), then coverage and signal stability are improved, but CSI accuracy deteriorates due to mismatch with dynamic narrow beam performance

Engineering Contradiction:

Improvesignal stabilityVSAvoidCSI accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent segments the beamforming system into two distinct components: static wide beams for TRS and dynamic narrow beams for PDSCH. This segmentation allows each beam type to be optimized for its specific function, with the static beams providing stable coverage and the dynamic beams delivering accurate CSI for communication channels.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by assigning different beam characteristics to different functional requirements. Static wide beams are used specifically for TRS where coverage and stability are critical, while dynamic narrow beams are used for PDSCH where CSI accuracy is critical. This localized optimization resolves the contradiction by allowing each component to have its optimal properties.

Inventive Principle:

Principle #3Local quality

2Reliability

If beamforming parameters are adjusted for dynamic narrow beams, then communication quality is improved, but system complexity increases due to additional parameter adjustment mechanisms

Engineering Contradiction:

Improvecommunication qualityVSAvoidparameter adjustment complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements dynamics by enabling the system to switch between static wide beams and dynamic narrow beams based on communication needs. The beamforming parameters are dynamically adjusted when narrow beams are activated, allowing the system to adapt to varying communication requirements while maintaining the option for simpler static beam operation when needed.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20250357991A1Method for beam sensing, communication device, and chip

Publication Date: 2025.11.20 BEIJING X RING TECHNOLOGY CO LTD

AI summary

A method for beam sensing includes: obtaining a first beam feature set and a second beam feature set related to a current network standard; and in response to at least one first parameter of the first beam feature set and at least one second parameter of the second beam feature set satisfying a preset condition, selecting the first beam feature set or the second beam feature set as an acquisition source of channel state information (CSI), in which the first beam feature set is related to the at least one first parameter, and the second beam feature set is related to the at least one second parameter.