CSI Reporting Segmentation for Single-DCI Multi-TRP Operation
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Solution Overview
Problem
Existing 5G networks face challenges in supporting diverse use cases due to inefficient channel state information (CSI) reporting and resource allocation for multiple transmission and reception points (TRPs), leading to suboptimal performance for cell-edge users and high interference, especially in ultra-reliable low-latency communications.
Innovation Solution
Enhanced CSI reporting mechanisms are introduced, including dynamic channel measurement resource configuration and CSI compression, with priority-based measurements and MAC-CE signaling for faster resource updates, to improve CSI reporting efficiency and reduce unnecessary data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional CSI reporting mechanisms are used for multiple TRPs, then network coverage and capacity are improved, but interference increases and resource allocation efficiency deteriorates
Solution Approach 1:
The patent segments the CSI reporting process by introducing separate reporting mechanisms for different TRPs. The network can configure different CSI report configurations for different TRPs, allowing independent optimization of reporting parameters for each TRP, thereby reducing interference and improving resource allocation efficiency while maintaining coverage and capacity
Solution Approach 2:
The patent implements dynamic CSI reporting where the reporting behavior adapts based on channel conditions and network configuration. The network can dynamically adjust CSI reporting parameters such as reporting periodicity, resources, and content based on current network state, allowing the system to maintain reliability while minimizing interference through adaptive resource usage
2Reliability
If CSI reporting frequency is increased for cell-edge users, then throughput and reliability are improved, but network resources are consumed and latency increases
Solution Approach 1:
The patent applies local quality by differentiating CSI reporting requirements based on user location and channel conditions. Cell-edge users can be configured with more frequent or detailed CSI reporting when needed, while cell-center users use standard reporting. This localized optimization improves throughput and reliability for cell-edge users without unnecessarily consuming network resources for all users
Solution Approach 2:
The patent enables dynamic parameter changes in CSI reporting configurations. The network can adjust reporting periodicity, resource allocation, and reporting content parameters based on current channel conditions and QoS requirements. This allows the system to increase reporting frequency for cell-edge users when needed while reducing it during normal conditions, balancing reliability improvement with resource efficiency and latency reduction
Data Source
AI summary
A user equipment (UE), baseband processor or other network device (e.g., base station, next generation NodeB, etc.) can operate to process or generate channel state information (CSI) reports based on a CSI report configuration for a single transmission reception point (sTRP) operation and a multiple transmission reception point (mTRP) operation. The CSI report can be formed by concatenating one or more measurements for the sTRP operation in a first concatenation, concatenating one or more measurements for the mTRP operation in a second concatenation separate from the first concatenation, and performing a further concatenation on the first concatenation and the second concatenation.