Cellular Beam Management Through Time-Based TCI State Switching
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Solution Overview
Problem
Existing beam management techniques in cellular communication networks, such as those based on 5G radio access technology, lack efficient methods for managing beam switching and prediction, leading to suboptimal performance in wireless communication systems.
Innovation Solution
The implementation of a time domain configuration for Transmission Configuration Indicator (TCI) state switching, utilizing downlink control messages to manage beam switching through codepoints that indicate specific TCI states and time intervals, enabling sequential or periodic switching based on non-overlapping time intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam switching is performed frequently to adapt to changing communication conditions, then communication reliability is improved, but beam management complexity increases
Solution Approach 1:
The patent applies preliminary action by configuring multiple TCI states in advance and establishing a predetermined sequence of beam switching. The system pre-arranges the beam switching order based on predicted communication conditions, so that when switching is needed, the system already has the next beam configuration ready, reducing the complexity of real-time decision-making while maintaining reliable communication adaptation.
2Productivity
If TCI state switching is performed without time domain configuration, then beam switching flexibility is maintained, but communication efficiency decreases
Solution Approach 1:
The patent implements periodic action by introducing time domain configuration that defines periodic TCI state switching intervals. The system switches between different TCI states at predetermined time intervals, creating a rhythmic pattern of beam switching that optimizes communication efficiency for periodic signal transmission while maintaining flexibility through configurable interval parameters.
Solution Approach 2:
The patent applies parameter changes by modifying the time domain characteristics of beam switching through configurable parameters such as switching intervals and activation timing. By adjusting these time-related parameters, the system optimizes communication efficiency for different service types while preserving beam switching flexibility through parameter reconfiguration.
3Device complexity
If beam switching is delayed to reduce processing overhead, then device complexity is reduced, but communication reliability deteriorates
Solution Approach 1:
The patent resolves this contradiction by applying preliminary action through advance configuration of TCI states and beam switching sequences. The system prepares multiple beam configurations in advance and establishes the switching timeline beforehand, so that when communication conditions require switching, the system can execute the switch without complex real-time processing, reducing overhead while maintaining reliability.
Solution Approach 2:
The patent implements feedback mechanisms where the system monitors communication quality and compares it against configured thresholds. When degradation is detected, the system triggers beam switching based on the pre-configured TCI state sequence, creating a feedback loop that maintains reliability while avoiding unnecessary processing by only switching when truly needed.
Data Source
AI summary
According to an example aspect of the present disclosure, there is provided a method, comprising receiving, by a user equipment, a downlink control message, the downlink control message comprising a configuration for transmission configuration indicator, TCI, state switching, determining by the user equipment, based on the configuration, at least one first TCI state for use during a first time interval, determining by the user equipment, based on the configuration, at least one second TCI state for use during a second time interval, wherein the first time interval and the second time interval are non-overlapping and performing by the user equipment, based on said determinations, said TCI state switching.