Unified TCI Framework With Duplex-Specific Uplink Power Control
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Solution Overview
Problem
Current TCI state configurations lack support for separate uplink power control for PUSCH, PUCCH, and SRS transmissions in SBFD and non-SBFD symbols, limiting the flexibility and effectiveness of unified TCI frameworks in 5G NR systems.
Innovation Solution
Implementing duplex-specific power control by configuring UEs with separate TCI states and power control parameters for both SBFD and non-SBFD operational modes, enabling flexible TCI configurations through MAC-CE and DCI indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a unified TCI framework is implemented without duplex-specific power control, then the system complexity is reduced and ease of operation is improved, but the adaptability to different operational modes (SBFD and non-SBFD) deteriorates
Solution Approach 1:
The patent segments the unified TCI framework into duplex-specific power control parameters, separating SBFD and non-SBFD operational modes. This allows the system to maintain a unified TCI structure while enabling mode-specific power control through separate parameter sets for each duplex type.
Solution Approach 2:
The patent introduces dynamic switching capability between different power control parameter sets based on the operational mode. The network can dynamically indicate which power control parameters to use through TCI state configurations, allowing the system to adapt between SBFD and non-SBFD modes without requiring separate unified frameworks.
2Adaptability or versatility
If separate TCI states are configured for SBFD and non-SBFD modes, then the adaptability to different operational modes is improved, but the device complexity increases
Solution Approach 1:
The patent creates a universal power control parameter structure that serves multiple duplex modes. By defining a common framework with mode-specific parameter sets, the system achieves multi-functionality where the same TCI framework handles both SBFD and non-SBFD operations, reducing the need for entirely separate configuration systems.
Solution Approach 2:
The patent introduces TCI state configurations as an intermediary layer between the unified TCI framework and the underlying power control mechanisms. This intermediary structure manages the complexity by providing a standardized interface for switching between different power control parameter sets based on operational mode, shielding higher layers from implementation details.
3Measurement precision
If duplex-specific power control parameters are implemented, then the measurement precision of power control in different modes is improved, but the quantity of configuration parameters increases
Solution Approach 1:
The patent applies local quality by configuring power control parameters specifically tailored to each duplex mode's requirements. SBFD mode receives optimized power control parameters suitable for its simultaneous bidirectional operation, while non-SBFD mode receives parameters optimized for traditional unidirectional operation, ensuring each mode gets precisely appropriate control without unnecessary parameters.
Solution Approach 2:
The patent changes the state of power control parameters based on operational mode through network indication. Rather than permanently configuring separate parameter sets, the system dynamically activates appropriate parameter sets through TCI state indications, allowing the same physical parameters to serve different functional roles based on the current operational mode.
Data Source
AI summary
Duplex-specific power control for a unified TCI framework is described. An apparatus may be configured to receive, from a network node, a TCI configuration indicative of at least one set of TCI states information. Each TCI state in the at least one set of TCI states information includes UL PC parameters associated with a SBFD operational mode or with a non-SBFD operational mode. The apparatus may be configured to activate one or more TCI states from a set of TCI states associated with the UL PC parameters in accordance with the at least one set of TCI states information. The apparatus may be configured to transmit, to the network node via a set of beams associated with the activated one or more TCI states, UL messages in accordance with an UL PC parameter of a TCI state that is based on the set of TCI states.