TCI Beam Updates for Coordinated CSS and USS Control Resource Sets
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beam management and control resource sets, particularly in heterogeneous networks, leading to suboptimal performance and resource utilization.
Innovation Solution
Implementing a mechanism for beam update and control resource set configuration that allows for joint transmission configuration indicator (TCI) states across multiple search spaces, enhancing coordination between common and user-specific search spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate TCI state configurations are used for common and user-specific search spaces, then configuration flexibility is maintained, but beam management efficiency deteriorates due to lack of coordination
Solution Approach 1:
The patent combines TCI state configurations for common search spaces and user-specific search spaces into a unified configuration mechanism. The network can indicate TCI states that apply to both search space types through a single configuration, enabling coordinated beam management while maintaining the ability to differentiate between common and user-specific configurations when needed.
Solution Approach 2:
The TCI state configuration mechanism is designed to serve multiple functions simultaneously: it can configure beams for common search spaces, user-specific search spaces, or both together. The unified TCI indication can be applied across different search space types, making the configuration system versatile and reducing the need for separate management mechanisms.
2Measurement precision
If multiple separate TCI state configurations are maintained for different search spaces, then specific beam control is enabled, but signaling overhead and complexity increase
Solution Approach 1:
The patent merges multiple TCI state configuration procedures into a unified indication mechanism. Instead of maintaining separate configuration states for common and user-specific search spaces, the network uses a single TCI indication that can simultaneously control beams across different search space types, reducing configuration complexity while preserving precise beam control capabilities.
Solution Approach 2:
The TCI state configuration is made dynamic and adaptable. The unified TCI indication can be selectively applied to different search space types based on current network conditions and requirements. This dynamic approach allows the system to maintain precise beam control when needed while reducing complexity through unified management when conditions permit.
3Ease of operation
If independent beam management is used for common and user-specific search spaces, then autonomous control is achieved, but coordination and resource utilization deteriorate
Solution Approach 1:
The patent implements a feedback mechanism where the network monitors beam usage across common and user-specific search spaces and dynamically adjusts TCI state assignments. This feedback loop enables coordinated beam management, ensuring that beam resources are efficiently allocated across different search space types while maintaining the ability for autonomous control when conditions warrant independent management.
Data Source
AI summary
A wireless device receives configuration parameters of a first control resource set (coreset) associated with at least one common search space (CSS) set and a second coreset associated with at least one user equipment (UE)-specific search space (USS) set. The wireless device receives a first control command indicating first transmission configuration indicator (TCI) state for the first coreset and a second control command indicating a second TCI state for downlink channels or both uplink and downlink channels. In response to the first coreset being associated with at least one CSS set, the wireless device receives first physical downlink control channel (PDCCH) receptions via the first coreset based on the first TCI state. In response to the second coreset being associated with at least one USS set, the wireless device receives second PDCCH receptions via the second coreset based on the second TCI state.