Base Station Beam Adjustment for Millimeter-Wave Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In high-frequency wireless communication systems, large-scale antennas used in millimeter-wave bands face issues with overlapping beam coverage and inter-beam interference, leading to reduced system capacity and user experience due to inefficient resource allocation.
Innovation Solution
A method where a base station sends beam information to user equipment, which performs channel detection and feedback, allowing the base station to identify and adjust overlapping beams, thereby reducing interference and improving signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large-scale antenna system is used to improve system capacity and spectrum efficiency, then the beam width becomes narrower, but sector coverage is reduced
Solution Approach 1:
The base station divides the sector into multiple sub-sectors, with each antenna bay responsible for covering a specific sub-sector. This segmentation allows each antenna to use narrow beams for high capacity while collectively covering the entire sector through coordinated multiple antenna bays.
2Area of stationary object
If multiple beams are transmitted simultaneously to cover the entire sector, then sector coverage is improved, but inter-beam interference increases
Solution Approach 1:
Each antenna bay is assigned to cover a specific sub-sector with localized beam directions, ensuring that beams from different antenna bays are spatially separated and do not overlap. This local quality approach maintains sector coverage while minimizing inter-beam interference through precise spatial positioning.
3Object-generated harmful factors
If time division scheduling is used to avoid inter-beam interference, then interference is reduced, but space diversity gains are lost and system capacity decreases
Solution Approach 1:
Instead of separating beams in the time dimension (time division), the invention separates beams in the spatial dimension by assigning different antenna bays to different sub-sectors. This spatial separation allows simultaneous transmission of multiple beams without interference, preserving both space diversity gains and system capacity.
4Area of stationary object
If antenna bays with poor channel quality are used to ensure coverage, then sector coverage is maintained, but signal-to-noise ratio is insufficient and resources are wasted
Solution Approach 1:
The base station pre-evaluates channel quality of different antenna bays and performs preliminary optimization by adjusting beamforming weights and directions. This preliminary action ensures that each antenna bay operates at optimal signal quality before transmission, preventing resource waste while maintaining coverage through intelligent resource allocation.
Data Source
AI summary
Embodiments of the present invention provide a beam adjustment method, user equipment, and a base station to resolve a problem of overlapping coverage, inter-beam interference. The method includes: sending, by a base station, beam information by using multiple beams, where the beam information includes a beam identifier and channel detection information that correspond to a beam; receiving the detection feedback information sent by the at least one user equipment; obtaining identifiers of Z beams carried in the detection feedback information, where Z is a positive integer greater than or equal to 1, and determining, in the Z beams, Z1 beams that need to be adjusted, where Z1 is a positive integer less than or equal to Z; and adjusting, for at least one time, Z1 antenna bays corresponding to the Z1 beams. The embodiments of the present invention are applied to beam adjustment.