Beam Weight Aggregation for mmWave SNR Improvement
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Solution Overview
Problem
Current beam generation methods for mmWave frequency bands in non-line-of-sight (NLOS) transmission do not fully utilize the information reported by user equipment (UE), leading to suboptimal signal-to-noise ratio (SNR) and capacity in terminal devices.
Innovation Solution
A method to generate a beam weight by aggregating multiple paths that meet specific spatial and power conditions, using phase difference information and power allocation coefficients to improve beam quality, involving phase compensation and normalization calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a beam is generated based on the strongest path only, then the beam alignment is simple and fast, but the SNR and capacity of terminal device are insufficient
Solution Approach 1:
The patent combines multiple paths (strongest path and second strongest path) to generate a single aggregated beam weight. The network device obtains multiple paths meeting multipath aggregation conditions, determines aggregation information including phase difference and power allocation, and generates a combined beam weight that merges the contributions of multiple paths, thereby improving SNR and capacity while managing complexity through structured aggregation.
2Reliability
If multiple paths are aggregated to improve beam quality, then the SNR and capacity improve, but the calculation complexity and processing overhead increase
Solution Approach 1:
The patent changes key parameters including phase difference information and power allocation coefficients to optimize the aggregation process. The network device determines phase difference between multiple paths and applies phase compensation, adjusts power allocation coefficients based on path energies, and uses normalization calculations to maintain numerical stability, thereby improving beam quality while controlling complexity through parameter optimization.
Solution Approach 2:
The patent performs preliminary actions by pre-determining phase difference information and power allocation coefficients before final beam generation. The network device obtains path information, calculates phase differences, determines power allocation in advance, and prepares aggregation information beforehand, which streamlines the subsequent beam weight calculation and reduces real-time processing complexity.
3Power
If phase compensation is applied to aggregate paths, then the beam gain improves, but the processing time and computational load increase
Solution Approach 1:
The patent applies phase compensation by changing the phase parameter of multiple paths based on determined phase difference information. The network device calculates phase differences between paths, applies phase compensation to align paths constructively, and thereby improves beam gain through coherent aggregation while managing processing time through efficient parameter manipulation.
Data Source
AI summary
A beam weight obtaining method and an apparatus. An aggregation path is generated by using energy of a plurality of paths to help improve quality of a generated beam, thereby improving an SNR and a capacity of a terminal device. The method includes: a network device obtains a plurality of paths that meet a multipath aggregation condition, where the multipath aggregation condition includes one or more of the following conditions: a condition that every two paths in the plurality of paths need to meet in space, and a condition that every two paths in the plurality of paths need to meet in power. The network device determines aggregation information based on the plurality of paths, where the aggregation information includes information required by the network device to generate an aggregation path corresponding to the plurality of paths.