Beam Management in Multiple TRP Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing beamforming and random access procedures in heterogeneous networks, leading to suboptimal performance and increased complexity.
Innovation Solution
The proposed solution involves advanced beam management techniques, including CSI-RS mapping and beam measurement reports, as well as optimized random access procedures that incorporate contention-free and contention-based methods to improve network efficiency and user equipment (UE) performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If advanced beam management techniques with multiple TRPs are implemented, then beamforming accuracy and network throughput are improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent segments the beam management process into distinct phases including separate CSI-RS resource configurations for different TRPs, independent beam measurement procedures for each TRP, and structured reporting mechanisms. This segmentation allows complex multi-TRP beam management to be handled through modular, manageable components rather than monolithic complex processing.
Solution Approach 2:
The patent implements dynamic beam management where the network can flexibly configure and reconfigure CSI-RS resources, beam directions, and TRP associations based on changing channel conditions and traffic requirements. The system adapts beamforming parameters dynamically across multiple TRPs to maintain optimal performance without requiring complete system redesign.
2Loss of time
If optimized random access procedures are implemented, then access latency is reduced, but signaling overhead and processing requirements increase
Solution Approach 1:
The patent applies preliminary action by performing beam alignment and channel estimation before the actual random access procedure through pre-configured CSI-RS resources. UEs can perform measurements and prepare access requests in advance based on pre-synchronized TRP configurations, reducing the time required during the critical access phase while the signaling overhead is distributed across setup and operation phases.
Data Source
AI summary
A wireless device receives one or more radio resource control (RRC) configuration parameters indicating an index for one or more sounding reference signal (SRS) resources. A first value of the index indicates to apply a first transmission configuration indicator (TCI) state associated with a first control resource set (coreset) pool index to first transmissions via the one or more SRS resources. A second value of the index indicates to apply a second TCI state associated with a second coreset pool index to second transmissions via the one or more SRS resources. The wireless device transmits, via the one or more SRS resources, an SRS using a TCI state, among the first TCI state and the second TCI state, determined based on the index.