Beam Training Overhead Reduction via Partial CSI-RS Measurement
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Solution Overview
Problem
The high path loss and sensitivity to congestion in millimeter wave communication systems lead to increased beam training overhead, power consumption, and processing delay, making existing beam management methods inefficient.
Innovation Solution
The proposed method reduces beam training overhead by predicting measurement information of Q CSI-RSs or Q SSBs based on the RSRPs of P CSI-RSs or P SSBs, allowing for partial measurement and reporting, thereby decreasing the need for exhaustive scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If exhaustive scanning of all transceive beam pairs in the codebook is performed, then the optimal beam training accuracy is improved, but the beam training overhead increases excessively
Solution Approach 1:
The patent applies partial action by performing beam training on only a subset of beam pairs rather than exhaustively scanning all possible transceive beam pairs in the codebook. The terminal device predicts RSRP values for unmeasured beams based on measured beams, achieving satisfactory beam training accuracy with reduced overhead.
Solution Approach 2:
The patent applies preliminary action by having the terminal device measure and report RSRP values for a selected subset of beams first, then using these measurements to predict RSRP values for remaining beams. This preliminary measurement approach enables the network to determine optimal beams without requiring complete exhaustive scanning.
2Measurement precision
If exhaustive beam scanning is performed, then the optimal beam selection is improved, but the power consumption increases
Solution Approach 1:
The patent reduces power consumption by performing measurements on only a partial set of beams rather than all beams in the codebook. The terminal device measures RSRP for a subset of beams and uses prediction algorithms to estimate values for other beams, significantly reducing the energy required for beam training while maintaining acceptable accuracy.
3Measurement precision
If exhaustive beam scanning is performed, then the optimal beam training is improved, but the processing delay increases
Solution Approach 1:
The patent reduces processing delay by limiting beam measurements to a subset of beams rather than performing exhaustive scanning. The terminal device measures and reports RSRP for a selected subset of beams, enabling the network to determine optimal beams faster while using prediction to infer characteristics of unmeasured beams.
Data Source
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AI summary
Provided are an information reporting method and apparatus, a communication node, and a storage medium. The method includes: receiving P channel state information reference signals (CSI-RSs) or P synchronization signal blocks (SSBs) from a base station; measuring the P CSI-RSs or the P SSBs to obtain reference signal received powers (RSRPs) of the P CSI-RSs or RSRPs of the P SSBs; and predicting measurement information of Q CSI-RSs or Q SSBs based on the RSRPs of the P CSI-RSs or the RSRPs of the P SSBs, and reporting the measurement information, where P is a positive integer greater than or equal to 1, and Q is a positive integer greater than or equal to P.