Beam Group Correlation for 5G Link Recovery
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Solution Overview
Problem
In 5G communications, high-frequency communication links are easily affected by mobility, rotation, and blockage, leading to frequent failures of beam pairs, necessitating re-initial access or beam training, which is time-consuming and complex.
Innovation Solution
A method where a terminal device groups transmit beams based on receive beams and sends spatial direction information or correlation data to a network device, allowing the network to select alternative beam pairs with low correlation for continued communication, reducing the need for re-initialization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming technology is used to improve communication quality at high frequencies, then signal to interference plus noise ratio (SINR) is improved, but the communication link becomes more sensitive to mobility, rotation, and blockage
Solution Approach 1:
The patent segments the beam management process by introducing beam groups that categorize multiple beam pairs based on their failure correlation characteristics. This segmentation allows the system to handle beam failures at the group level rather than individual beam level, reducing the impact of mobility, rotation, and blockage on overall communication reliability.
Solution Approach 2:
The patent performs preliminary classification of beam pairs into different beam groups based on their spatial relationships and failure correlations before actual communication occurs. This preliminary action enables the system to pre-identify alternative beam groups that are less likely to fail simultaneously, so when a beam failure occurs, the system can quickly switch to a pre-identified alternative without requiring full re-initialization.
2Reliability
If beam pair is determined by beam sweeping process to achieve alignment, then communication quality is improved, but time is lost when beam pair fails and re-initial access or beam training is required
Solution Approach 1:
The patent performs preliminary classification of beam pairs into different beam groups based on their spatial relationships and failure correlations before actual communication occurs. This preliminary action enables the system to pre-identify alternative beam groups that are less likely to fail simultaneously, so when a beam failure occurs, the system can quickly switch to a pre-identified alternative without requiring full re-initialization.
Solution Approach 2:
The patent implements a feedback mechanism where the terminal device reports beam group information to the network device. This feedback enables the network device to understand the spatial relationships and failure correlations between different beam groups, allowing for intelligent selection of alternative beam groups when failures occur, thereby reducing recovery time.
3Area of stationary object
If multiple transmit beams are used to expand coverage, then device complexity increases, but beam management becomes more complex
Solution Approach 1:
The patent segments the large number of beam pairs into multiple beam groups based on spatial relationships and failure correlations. This segmentation simplifies beam management by allowing the system to operate at the beam group level rather than managing each individual beam pair separately, thereby reducing complexity while maintaining expanded coverage through multiple beams.
Solution Approach 2:
The patent merges multiple beam pairs with similar spatial characteristics and failure correlations into single beam groups. This merging reduces the overall number of entities that need to be managed independently, simplifying beam management complexity while preserving the coverage benefits of using multiple transmit beams through the group-level management approach.
Data Source
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AI summary
This application discloses a method for performing communication based on a beam group, and a device. In the method, a terminal device groups transmit beams of a network device based on a receive beam of the terminal device; the terminal device determines spatial direction information of each beam group; the terminal device sends, to the network device, the spatial direction information of each beam group or information that is about a correlation between beam groups and that is determined based on the spatial direction information; the network device obtains the information about the correlation between the beam groups; and when a first beam pair used for communication between the network device and the terminal device fails, the network device selects a second beam pair based on the information about the correlation between the beam groups, to communicate with the terminal device, where a transmit beam of the network device in the first beam pair belongs to a first beam group, a transmit beam of the network device in the second beam pair belongs to a second beam group, and a correlation between the second beam group and the first beam group meets a preset condition.