CSI Field Mapping Order Control for Multi-TRP Throughput
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Solution Overview
Problem
In next-generation mobile communication systems, specifically in New Radio (NR), the control of channel state information (CSI) reporting is inadequate when multiple transmission/reception points (TRPs) or panels are used, leading to throughput reduction and communication quality degradation due to the lack of consideration for TRPs in existing CSI priority mechanisms.
Innovation Solution
A terminal with a control section that manages the mapping order of CSI fields in CSI reports based on parameters and transport block (TB) or TRP indices, enabling appropriate CSI reporting even with multiple TRPs or panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If known CSI priority mechanisms are used, then CSI reporting can be performed in single TRP scenarios, but CSI reporting cannot be appropriately performed for multiple TRPs leading to throughput reduction and communication quality degradation
Solution Approach 1:
The patent segments the CSI reporting mechanism by introducing separate priority rules for different TRPs. Each TRP's CSI report is assigned a priority level (first priority for single TRP, second priority for multi-TRP), allowing the system to handle multiple TRPs independently rather than using a unified priority mechanism that fails in multi-TRP scenarios.
Solution Approach 2:
The patent implements dynamic priority adjustment based on the number of TRPs involved. The CSI reporting priority is not fixed but adapts according to the TRP configuration - switching between first priority (single TRP) and second priority (multiple TRPs) modes, enabling the system to respond dynamically to changing network conditions.
2Ease of operation
If existing NR specifications are used, then implementation is simple, but CSI reporting control is inadequate when multiple TRPs or panels are used
Solution Approach 1:
The patent applies local quality by introducing TRP-specific priority rules within the broader CSI reporting framework. Instead of uniformly applying a single priority mechanism across all scenarios, the system applies different priority rules locally - first priority for single TRP cases and second priority for multi-TRP cases - thereby improving adaptability while maintaining implementation feasibility.
3Productivity
If mapping order of CSI fields is not optimized, then processing is simpler, but communication quality and throughput are degraded
Solution Approach 1:
The patent applies preliminary action by establishing the mapping order of CSI fields in advance based on TRP configuration. The control section determines the appropriate mapping order (first or second order) before CSI reporting, allowing the system to optimize throughput without introducing complex real-time decision-making during the reporting process itself.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes: a control section that controls mapping order of channel state information (CSI) fields included in a CSI report including information related to measurement of a plurality of transmission/reception points (TRPs), based on at least one of a substance of a parameter and a corresponding transport block (TB) index or TRP index; and a transmitting section that transmits the CSI report.