Uplink TCI State Update for Beam Management
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G and LTE networks, face challenges in efficiently managing uplink transmit beams due to the lack of a unified framework for uplink and downlink transmission configuration indicators (TCI) states, leading to suboptimal performance in dynamic scheduling of uplink transmissions.
Innovation Solution
The implementation of a unified framework for uplink and downlink TCI states, where uplink TCI states are dynamically indicated to user equipment (UE) for dynamically scheduled, semi-persistently scheduled, or periodic uplink transmissions, allowing for the application of TCI state updates to improve beam management and power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a unified framework for uplink and downlink TCI states is implemented, then beam management and power control are improved, but device complexity increases
Solution Approach 1:
The patent applies universality by creating a unified TCI state framework that serves both uplink and downlink transmissions. The same TCI state mechanism is used across different transmission types (dynamic scheduling, semi-persistent scheduling, periodic transmissions), allowing a single framework to manage multiple functions rather than requiring separate management systems for each transmission type.
Solution Approach 2:
The patent implements dynamics by enabling dynamic indication of TCI states for uplink transmissions. The network can dynamically switch between different TCI states based on current channel conditions and transmission requirements, allowing the system to adapt to changing conditions without requiring complex manual reconfiguration.
2Productivity
If dynamic TCI state indication is applied to all uplink transmission types, then communication efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by differentiating the TCI state indication approach based on the specific transmission type. Different transmission types (dynamic scheduling, semi-persistent scheduling, periodic transmissions) receive tailored TCI state indication mechanisms appropriate to their characteristics, rather than applying a uniform approach to all transmissions.
Solution Approach 2:
The patent implements preliminary action by configuring TCI states in advance through higher layer signaling before actual transmissions occur. This allows the UE to have pre-configured TCI state information ready for upcoming transmissions, reducing the need for frequent dynamic signaling during the transmission process itself.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for uplink transmit beam update using uplink transmission configuration indicator (TCI) states. An example method generally includes receiving, from a network entity, signaling of an uplink transmission configuration indicator (TCI) state update for one or more uplink transmissions. The example method generally includes determining the uplink TCI state update is to be applied for dynamically scheduled uplink transmission, semi-persistently scheduled uplink transmission, or periodic uplink transmission. The example method generally includes applying the uplink TCI state update to one or more uplink transmissions in accordance with the determination.