5G Base Station Beam Selection via UE Feedback
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Solution Overview
Problem
In 5G high-frequency scenarios, the existing method of beamforming in base stations and user equipment limits the ability to arbitrarily select beams, leading to insufficient information about the receiving states of user equipment, resulting in increased system overhead and reduced information transmission efficiency.
Innovation Solution
A beam selection method where the base station and user equipment exchange information on transmission beam groups and receiving capability, allowing the base station to select appropriate transmission beams based on the user equipment's receiving capability, thereby improving information transmission efficiency and reducing system overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming technology is used in 5G high-frequency scenarios, then information transmission efficiency is improved, but system overhead increases due to insufficient information on receiving states
Solution Approach 1:
The patent implements a feedback mechanism where the user equipment reports receiving capability information (number of reception beams that can be simultaneously formed) back to the base station. This feedback enables the base station to make informed beam selection decisions that match the UE's actual receiving capabilities, thereby improving transmission efficiency while avoiding excessive overhead by providing only essential capability information.
Solution Approach 2:
The patent changes the parameter of beam selection by transitioning from arbitrary beam selection to capability-based beam selection. The base station selects the number of transmission beams based on the received capability parameter from the UE, dynamically adjusting transmission parameters to match receiving capabilities, thus optimizing the balance between transmission efficiency and system overhead.
2Device complexity
If the base station selects beams without sufficient information on receiving states, then device complexity is reduced, but information transmission efficiency deteriorates
Solution Approach 1:
The patent applies preliminary action by having the user equipment report its receiving capability information before the actual data transmission begins. This advance information provision allows the base station to pre-plan beam selection strategies without needing complex real-time analysis of receiving states, thus maintaining low device complexity while ensuring efficient information transmission.
3Measurement precision
If the user equipment reports detailed receiving capability information, then beam selection accuracy is improved, but system overhead increases
Solution Approach 1:
The patent extracts only the essential receiving capability information (the number of reception beams that can be simultaneously formed) from the user equipment and reports it to the base station. This selective extraction of critical parameters achieves sufficient beam selection accuracy without transmitting excessive detailed information, thereby balancing measurement precision with system overhead control.
Data Source
AI summary
A beam selection method, a base station, and a user equipment are presented. The beam selection method performed by the base station includes: receiving transmission beam group information on the base station and information on receiving capability of a receiving set of a user equipment corresponding to each transmission beam group fed back by the user equipment, where the information on receiving capability of the receiving set is the number of reception beams that the user equipment can simultaneously form in the receiving set; and selecting transmission beams corresponding to the receiving set and used for transmitting information to the user equipment based at least in part on the transmission beam group information and the information on receiving capability of each receiving set.