Beam Training Efficiency in Wireless Communication Systems
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Solution Overview
Problem
The existing beam training methods in wireless communication systems are inefficient, particularly in high-frequency bands, due to high overhead and time consumption, especially when multiple beams need to be trained, and require frequent updates as user equipment moves, increasing the cycle of beam training processes.
Innovation Solution
An electronic device and user equipment that transmit and receive reference signals using a same time-frequency resource with two beams in a beam pair, where the beams have a spatial distance greater than a predetermined value and satisfy a predetermined constraint relationship, and predict the best transmission and reception beams based on historical information to reduce the need for frequent beam training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple beams are transmitted in the same time-frequency resource, then beamforming gain is improved, but interference between beams increases
Solution Approach 1:
The patent changes the spatial parameter by ensuring beams are separated by a predetermined spatial distance, and changes the signal parameter by applying orthogonal constraint relationships (such as orthogonal codes or orthogonal frequency division multiplexing) to reference signals transmitted on different beams, thereby achieving multiplexing while controlling interference
Solution Approach 2:
The patent introduces a spatial dimension constraint by requiring beams to be separated by a predetermined spatial distance, adding a geometric dimension to the beam selection process beyond traditional frequency or time domain separation
2Measurement precision
If beam training is performed frequently to track user equipment movement, then beam accuracy is improved, but overhead and time consumption increase
Solution Approach 1:
The patent performs preliminary beam training to establish a set of candidate beams with predetermined spatial separation before user equipment movement occurs, preparing the beam selection pool in advance to reduce the need for frequent re-training
Solution Approach 2:
The patent implements a feedback mechanism where user equipment reports reference signal received power for multiple candidate beams, allowing the network side device to track movement and select optimal beams without performing complete beam training sequences
Data Source
AI summary
An electronic device, a wireless communication method, and a computer-readable storage medium. The electronic device comprises a processing circuit, configured to send two reference signals using identical time-frequency resources and respectively using two beams in a beam pair, wherein a spatial distance between the two beams in the beam pair is greater than a predetermined value, and the two reference signals satisfy a predetermined constraint relation. The efficiency of a beam training process can be improved, and the time consumption of the beam training process is reduced, thereby achieving a compromise between beam training overheads and beamforming gains.