Beam Feature Selection for CSI Accuracy in Wide-Narrow Beamforming
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Solution Overview
Problem
The inaccuracy of channel state information (CSI) due to the 'wide and narrow beam' effect in beamforming systems, where static wide beams used for tracking reference signals do not accurately match the performance of dynamic narrow beams, leading to suboptimal communication quality.
Innovation Solution
A mechanism for beam sensing that determines the acquisition source of CSI by comparing first and second beam feature sets based on preset conditions, improving the accuracy of CSI acquisition and communication device reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If static wide beams are used for tracking reference signals, then beam coverage is improved, but CSI accuracy deteriorates due to mismatch with dynamic narrow beams
Solution Approach 1:
The patent applies dynamics by enabling the beamforming system to switch between static wide beams and dynamic narrow beams based on operational requirements. The base station can dynamically adjust beam characteristics: using wide beams for initial coverage and tracking reference signals, then transitioning to narrow beams for data transmission. This dynamic adaptation resolves the contradiction by allowing the system to optimize for coverage when needed and for precision when needed, rather than being constrained to a single beam type.
Solution Approach 2:
The patent segments the beamforming process into distinct phases: a first beamforming process using static wide beams for coverage and tracking, and a second beamforming process using dynamic narrow beams for precise data transmission. By dividing the overall beamforming operation into separate segmented processes with different characteristics, the system can achieve both wide coverage and high CSI accuracy at appropriate times, resolving the fundamental contradiction between these two requirements.
2Area of stationary object
If beam feature parameters are adjusted for wide beam coverage, then coverage area is improved, but the matching accuracy with actual channel conditions deteriorates
Solution Approach 1:
The patent implements dynamics by allowing beam parameters to change based on the operational phase. During the tracking reference signal phase, wide beam parameters are used for coverage. During the data transmission phase, narrow beam parameters are used for precision. This dynamic parameter adjustment resolves the contradiction between coverage area and matching accuracy by optimizing parameters for each specific task.
Solution Approach 2:
The patent applies parameter changes by modifying beamforming parameters (such as beam width, direction, and gain) according to different operational requirements. The system changes from wide beam parameters during tracking to narrow beam parameters during data transmission. This parameter transformation allows the system to achieve both wide coverage and high matching accuracy at different times, resolving the contradiction between these opposing requirements.
Data Source
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AI summary
The invention provides a method and an apparatus for beam sensing, which relates to a field of communication technology. The method 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. The invention may improve the accuracy of determining the acquisition source corresponding to the CSI, the reception state and the communication quality of the communication device.