Wireless Beam Management for Inter-Beam Interference Control
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Solution Overview
Problem
Current mobile communication systems face challenges in managing inter-beam interference, particularly in high-data-traffic scenarios with increased user demands for speed and connectivity, where existing technologies fail to effectively control interference between neighboring base stations and terminals.
Innovation Solution
A method is introduced where a serving base station sets and manages beam management reference signals for terminals, transmitting this information to neighboring base stations and terminals, allowing for the exclusion of specific beams from being used for signal transmission based on received beam index information, thereby controlling inter-beam interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam management reference signals are transmitted from neighboring base stations and terminals, then beam management capability is improved, but inter-beam interference increases
Solution Approach 1:
The serving base station performs preliminary actions by configuring the terminal with beam management reference signals from neighboring base stations and terminals before actual beam management operations. This advance configuration enables the terminal to measure and report beam quality metrics, allowing the serving base station to identify and exclude interfering beams proactively, thus resolving the contradiction between improving beam management capability and preventing inter-beam interference.
Solution Approach 2:
The terminal measures the beam management reference signals and provides feedback in the form of beam index information to the serving base station. This feedback mechanism enables the serving base station to identify beams with strong interference and generate indication information to exclude those beams. The feedback loop continuously optimizes beam selection to maintain high measurement precision while minimizing inter-beam interference.
2Manufacturing precision
If beam index information is collected from terminal measurements, then interference control accuracy is improved, but system complexity increases
Solution Approach 1:
The patent extracts only the essential beam index information from terminal measurements, rather than processing complete measurement data. The terminal measures beam management reference signals and reports beam indexes corresponding to the strongest beams. This extraction approach maintains high interference control accuracy by identifying specific interfering beams while significantly reducing system complexity by transmitting only compact beam index data rather than full measurement results.
Solution Approach 2:
The patent changes the parameter representation from detailed measurement data to simplified beam index values. Instead of transmitting comprehensive measurement results, the system uses beam indexes as compact parameters that uniquely identify beams. This parameter transformation maintains the ability to accurately control interference while reducing the complexity of data processing and transmission in the system.
3Object-generated harmful factors
If indication information is transmitted to neighboring base stations and terminals, then inter-beam interference is reduced, but signaling overhead increases
Solution Approach 1:
The patent uses copying by transmitting indication information that references previously configured beam management reference signals. Rather than transmitting complete beam configuration data, the system transmits indication information containing beam indexes that copy-reference the already-configured reference signals. This approach effectively reduces inter-beam interference by communicating beam exclusion decisions while minimizing signaling overhead through efficient data representation.
4Measurement precision
If multiple beam management reference signals are configured, then beam selection accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies partial action by configuring the terminal to measure multiple beam management reference signals but reporting only the beam indexes of the strongest beams (e.g., top N beams). This partial reporting approach maintains high beam selection accuracy by focusing on the most relevant beams while reducing processing time compared to analyzing all measured beams. The terminal performs measurements on multiple signals for accuracy but transmits only essential information to minimize processing delays.
Data Source
AI summary
The present specification provides a beam management method in a wireless communication system. The beam management method performed by a serving base station according to the present specification comprise setting, to a UE, a plurality of beam management reference signals (RSs) for downlink beam scanning of the UE, transmitting at least one beam management reference signal to the UE through at least one transmission beam; receiving beam index information corresponding to a predetermined number of transmission beams from the UE; and based on the received beam index information, transmitting indication information for controlling a beam used for transmission of a downlink reference signal of the neighboring eNB and/or transmission of an uplink reference signal of the neighboring UE to the neighboring eNB and/or the neighboring UE.