mmWave Antenna Panel Beam Matching for Multi-TCI MIMO Reception
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Solution Overview
Problem
Existing 5G wireless communication systems face challenges in efficiently managing multi-beam reception and antenna configuration for enhanced MIMO performance, particularly in mmWave frequency ranges, due to lack of defined RF and RRM requirements for UEs with simultaneous multi-beam reception capabilities.
Innovation Solution
The method involves configuring transmission configuration indicator states for simultaneous MIMO reception, sweeping narrow beams to receive repeated reference signals, and selecting antenna elements to form groups that direct beams based on spatial radio multipath channel characteristics, optimizing antenna configurations to maximize channel rank and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If narrow beam sweeping is performed for each TCI state to receive repeated reference signals, then spatial radio multipath channel characteristics can be accurately measured, but measurement time and processing complexity increase
Solution Approach 1:
The system performs preliminary beam sweeping and channel characteristic measurement during idle periods or before data transmission. The UE sweeps narrow beams and measures spatial radio multipath channel characteristics in advance, storing the results for subsequent MIMO reception operations, thus avoiding time-consuming measurements during active communication
Solution Approach 2:
The system performs beam sweeping for a sufficient number of beams to capture the essential multipath characteristics without exhaustively measuring every possible beam direction. The measurement covers the necessary angular spread to characterize the channel while stopping before becoming excessively time-consuming
2Reliability
If antenna elements are selected and grouped to form directed beams based on channel characteristics, then MIMO reception performance is improved, but device complexity and configuration overhead increase
Solution Approach 1:
The antenna panel is divided into multiple selectable groups of antenna elements, each group capable of forming a specific beam pattern. The UE can select and activate only the necessary antenna groups based on the measured channel characteristics, rather than managing all antenna elements simultaneously, thus reducing configuration complexity while maintaining MIMO performance
Solution Approach 2:
The antenna element grouping and beam formation is made dynamic and adaptive. The UE selects different antenna element groups and beam configurations based on the measured spatial radio multipath channel characteristics, allowing the system to optimize performance for different channel conditions without requiring complex static configurations
3Productivity
If multiple TCI states are configured for simultaneous MIMO reception, then throughput and channel rank are maximized, but RF and RRM management complexity increases
Solution Approach 1:
The UE is designed with universal capabilities to handle multiple TCI states simultaneously, with a single RF chain that can process multiple beams and spatial streams. The RRM management framework is extended to universally support multi-TCI configurations, allowing the same hardware and software infrastructure to handle both single- and multi-TCI scenarios without requiring separate specialized systems
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for radio channel pattern matching. One method may include receiving, at an antenna panel, at least two configured transmission configuration indicator states for simultaneous multiple input multiple output reception; for each of the at least two configured transmission configuration indicator states for simultaneous reception from one or more transmission reception points, sweeping at least one narrow beam receiving one or more repeated reference signals received from the one or more transmission reception points; and, based upon at least one spatial radio multipath channel characteristic of the one or more repeated reference signals carrying each transmission configuration indicator state, selecting at least one antenna element of the antenna panel to form a group of antenna elements and control the group of antenna elements to direct at least one beam.