Uplink Beam Reporting for Multi-Panel STxMP Distinction
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Solution Overview
Problem
Existing beam reporting mechanisms in MIMO enhancement technologies, such as R18, fail to accurately distinguish between multiple uplink beams from different antenna panels, hindering simultaneous transmission via multi-panel (STxMP) and thus impacting system transmission reliability and throughput.
Innovation Solution
A method for beam reporting enhancement that involves UE sending identification information to distinguish multiple beams, including different UE capability value set indexes and/or antenna panel information indexes, enabling the network device to determine whether the beams support STxMP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing beam reporting mechanisms are used, then the system can operate with current capabilities, but multiple uplink beams from different antenna panels cannot be accurately distinguished
Solution Approach 1:
The patent segments the beam reporting process by introducing separate identification fields (panel ID, TCI state ID) for different beam types. This allows the network to distinguish between beams from different antenna panels and different TCI states, resolving the ambiguity in existing reporting mechanisms while maintaining backward compatibility.
Solution Approach 2:
The patent introduces an intermediary mapping relationship between beam reporting information and antenna panel/TCI state identifiers. This intermediary layer enables the network to infer the source panel and TCI state of each beam through the reported identification information, achieving accurate beam distinction without directly transmitting panel-level details for every beam.
2Adaptability or versatility
If beam distinction information is added to support STxMP, then simultaneous transmission via multi-panel can be enabled, but the reporting information complexity increases
Solution Approach 1:
The patent designs a universal reporting framework where the same identification fields (panel ID, TCI state ID) serve multiple purposes: distinguishing beams for STxMP operation, identifying antenna panels for spatial diversity, and indicating TCI states for beam management. This multi-functional approach enables STxMP support while avoiding the need for separate dedicated signaling mechanisms.
Solution Approach 2:
The patent changes the parameter structure of beam reporting by adding identification fields that map to antenna panel and TCI state parameters. This parameter enhancement allows the system to support STxMP operations and distinguish multiple uplink beams without fundamentally altering the existing reporting mechanism, thereby managing complexity through controlled parameter evolution.
3Measurement precision
If multiple identification fields are reported for each beam, then beam distinction accuracy improves, but the signaling overhead increases
Solution Approach 1:
The patent uses copying by referencing existing TCI state identifiers and panel identifiers that are already defined in the system configuration. Instead of creating entirely new identification mechanisms, the patent copies and reuses existing identifier spaces, thereby achieving accurate beam distinction while minimizing additional signaling overhead through leveraging pre-established identification frameworks.
Data Source
AI summary
A method for beam reporting enhancement, performed by user equipment (UE), and includes: sending reporting information, where the reporting information includes identification information used, in a case where the UE supports simultaneous transmission via multi-panel (STxMP), for distinguishing a plurality of beams.