Uplink Panel Activation via CSI-SRS Association for Beam Management
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing multiple transmission and reception points (TRPs) and multiple panels, leading to suboptimal channel state information (CSI) reporting and panel activation, which affects data transmission quality and efficiency.
Innovation Solution
The proposed solution involves mechanisms for panel activation and reference signal association based on CSI reports, utilizing MAC CEs to manage spatial relations and panel activation times, enabling efficient beam management and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple TRPs and panels are managed in existing wireless communication systems, then system capacity and coverage are improved, but channel state information reporting and panel activation become suboptimal, affecting data transmission quality
Solution Approach 1:
The patent segments the management of multiple panels by introducing separate activation mechanisms for different panel types (analog RF switch panels and digital beamforming panels). Each panel type is managed independently through specific MAC CE commands, allowing optimized control of spatial relation information and panel activation states without interfering with each other, thus resolving the suboptimal reporting issue while maintaining high transmission efficiency and quality
Solution Approach 2:
The patent implements dynamic panel activation and deactivation based on real-time channel conditions and traffic requirements. The network can dynamically adjust which panels are active by sending activation/deactivation MAC CEs, and panels can dynamically update their spatial relation information based on CSI reports, enabling adaptive optimization of data transmission quality and efficiency under varying conditions
2Reliability
If panel activation and beam management are optimized based on CSI reports, then data transmission quality and efficiency are enhanced, but system complexity increases
Solution Approach 1:
The patent introduces MAC Control Elements (MAC CEs) as intermediaries to manage panel activation and spatial relation information. Instead of complex higher-layer signaling or frequent physical layer messages, MAC CEs provide an efficient intermediate layer for transmitting panel activation commands and spatial relation updates, simplifying the management process while maintaining high transmission quality through precise control
Solution Approach 2:
The patent enables panels to self-manage their activation states and spatial relation information based on received MAC CE commands and measured channel conditions. Panels can autonomously determine when to activate or deactivate based on traffic patterns and channel quality, and can self-update their spatial relation information without requiring constant network intervention, reducing overall system complexity while maintaining high transmission quality
3Productivity
If MAC CEs are used to manage spatial relations and panel activation, then beam management efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent designs MAC CEs with multi-functionality to manage multiple aspects of panel operation within single signaling messages. The panel activation MAC CE can simultaneously indicate activation state and associate spatial relation information, while the spatial relation update MAC CE can update multiple panels' beam configurations in one message, reducing the total number of signaling transmissions required while maintaining comprehensive beam management efficiency
Solution Approach 2:
The patent merges related control functions into unified MAC CE structures. Instead of separate messages for panel activation and spatial relation configuration, the activation MAC CE combines both functions, and similarly merges spatial relation updates across multiple panels into single consolidated messages, thereby reducing signaling overhead while preserving beam management efficiency through integrated control
Data Source
AI summary
A wireless device, comprising uplink panels, may receive one or more radio resource control (RRC) messages. The one or more RRC messages may comprise a channel state information (CSI) report configuration indicating a sounding reference signal (SRS) resource. The wireless device may transmit, based on the CSI report configuration, a CSI report indicating an uplink panel, of the uplink panels, associated with the SRS resource. The wireless device may activate the uplink panel in response to transmitting the CSI report. The wireless device may receive an uplink grant scheduling an uplink signal transmission via the uplink panel and based on the SRS resource.