Predictive TCI Beam Control for Lower PDCCH Decoding Overhead
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beam control and channel state information (CSI) reporting, leading to increased physical downlink control channel (PDCCH) decoding and unnecessary beam switching, which affects performance and power consumption.
Innovation Solution
The proposed method and apparatus involve configuring a beam or beam candidate set to be applied to a specific channel in advance, based on predicted transmission configuration information (TCI state information), reducing unnecessary PDCCH decoding and beam switching by anticipating channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam control and CSI reporting are managed using existing methods, then the system can maintain basic communication functionality, but the number of PDCCH decodings and beam switchings increases, leading to higher power consumption and reduced performance
Solution Approach 1:
The patent applies preliminary action by configuring multiple Transmission Configuration Indication (TCI) states in advance for different time intervals. The base station pre-configures TCI state information including time interval indicators and beam parameters, allowing the terminal to anticipate and prepare for upcoming beam switchings without requiring frequent PDCCH decodings, thereby reducing power consumption while maintaining communication efficiency
2Reliability
If frequent beam switching is performed to adapt to changing channel conditions, then communication reliability improves, but the number of PDCCH decodings and beam switchings increases, affecting system performance
Solution Approach 1:
The patent implements dynamics by introducing time interval-based TCI state configurations that allow adaptive beam management. Different TCI states are configured for different time intervals, enabling the system to dynamically adjust beam parameters according to changing channel conditions while optimizing the timing of beam switchings to minimize their impact on system performance
3Measurement precision
If the system uses detailed TCI state information for precise beam control, then channel state management improves, but the complexity of configuration and processing increases
Solution Approach 1:
The patent applies segmentation by dividing the TCI state configuration into multiple time intervals, each with its own set of TCI states. This segmentation allows the system to manage detailed beam control information in a structured, organized manner, improving channel state management precision while making the configuration more manageable and less complex through systematic organization
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting upper data rates. Provided are a beam control method performed by a terminal in a wireless communication system. The method includes receiving, from a base station, configuration information including a time interval and transmission configuration information (TCI) state information corresponding to the time interval; and performing beam control, based on the TCI state information during the time interval.