Group-Based Beam Management for Wireless Reporting Overhead
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing multiple transmission and reception beams, particularly in next-generation mobile communications, where diverse spectrum bands and deployment scenarios require effective beam grouping and management.
Innovation Solution
The proposed solution involves grouping multiple transmission or receiving beams into a beam group based on spatial correlation measurement, pre-defined rules, or beamwidth, allowing for reduced reporting overhead through group-based reporting, and enabling dynamic updating of beam groups based on measurements received from wireless transmit/receive units (WTRUs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam-based reporting is used to provide detailed measurement information for each individual beam, then measurement precision is improved, but reporting overhead increases
Solution Approach 1:
The patent merges multiple individual beam measurements into a single group-based measurement report. Instead of reporting each beam's measurement separately, the system combines measurements for a group of beams (e.g., beams within a certain angular sector or spatial region) into one aggregated report, thereby reducing reporting overhead while maintaining sufficient measurement precision for beam management decisions.
Solution Approach 2:
The patent segments the beam reporting process into two levels: group-based reporting for general beam management and individual beam-based reporting for detailed optimization. The group-based report provides overview information for a set of beams, while individual beam reports are requested only when needed, creating a hierarchical reporting structure that balances precision and overhead.
2Adaptability or versatility
If dynamic beam grouping is implemented to adapt to changing environmental conditions, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic beam grouping where the composition of beam groups can change over time based on environmental conditions such as user mobility, blockages, or channel variations. The network can reconfigure which beams belong to which groups dynamically, allowing the system to adapt to changing conditions while using a standardized grouping mechanism that manages complexity.
Solution Approach 2:
The patent uses measurement reports from wireless transmit/receive units (WTRUs) as feedback to dynamically update beam groupings. The TRP receives measurement information, processes it to identify optimal beam groups, and signals updated grouping configurations back to WTRUs, creating a closed-loop feedback system that adapts beam groups to current channel conditions.
3Loss of information
If group-based reporting is used to reduce reporting overhead, then reporting overhead is reduced, but measurement precision for individual beams deteriorates
Solution Approach 1:
The patent applies partial action by providing measurement information at the group level rather than at the individual beam level for routine operations. The group-based report provides sufficient precision for general beam management decisions such as beam selection and switching. Individual beam measurement precision is maintained only when explicitly requested through additional signaling, avoiding unnecessary overhead while preserving the ability to obtain detailed measurements when needed.
Data Source
AI summary
A WTRU may include a memory and a processor. The processor may be configured to receive beam grouping information from a gNB or transmission and reception point (TRP). The beam grouping information may indicate a group of beams that the WTRU may report using group-based reporting. The group-based reporting may be a reduced level of reporting compared to a beam-based reporting. The group-based report may include measurement information for a representative beam. The representative beam may be one of the beams in the group or represents an average of the beams in the group. Alternatively, the representative beam may be a beam that has a maximum measurement value compared to other beams in the group. The group-based report may include a reference signal received power (RSRP) for the representative beam and a differential RSRP for each additional beamin the beam group.