CSI Report Configuration for Multi-TRP DCI Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently configuring channel state information reports, particularly for devices moving at high speeds, due to excessive control signaling and increased CSI feedback overhead in multi-TRP scenarios.
Innovation Solution
The method involves receiving and transmitting downlink control information (DCI) sequences over multiple physical downlink control channels (PDCCHs) to schedule joint transmissions from multiple network nodes, inferring CSI report configurations, and transmitting CSI reference signals to optimize CSI reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate CSI reporting configurations are provided for each DCI sequence in multi-TRP scenarios, then transmission reliability is improved, but control signaling overhead and device complexity increase significantly
Solution Approach 1:
The patent merges CSI reporting configurations by allowing a first CSI reporting configuration to be inferred from a second CSI reporting configuration. Specifically, parameters such as reportQuantity, codebookConfig, and resource settings can be derived from the second configuration, reducing the need to transmit separate complete configurations for each DCI sequence while maintaining the ability to support multi-TRP transmissions
Solution Approach 2:
The second CSI reporting configuration serves multiple functions: it acts as a standalone configuration for the second DCI sequence and simultaneously serves as a reference for inferring the first CSI reporting configuration for the first DCI sequence. This multi-functionality reduces the overall configuration overhead in the system
2Measurement precision
If complete CSI reporting configurations are transmitted for each DCI sequence, then reporting accuracy is improved, but feedback overhead increases
Solution Approach 1:
The patent extracts common parameters from the two CSI reporting configurations. By identifying that certain parameters (reportQuantity, codebookConfig, resource settings) can be inferred from the second configuration, the system removes the redundancy of transmitting these parameters separately for the first configuration, thereby reducing feedback overhead while preserving reporting accuracy
Solution Approach 2:
Instead of transmitting complete separate configurations, the system uses the second CSI reporting configuration as a template or copy reference. The first configuration is created by copying/infering parameters from the second configuration, which significantly reduces the amount of data that needs to be transmitted and processed
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for configuring a channel state information report. One method includes receiving, at a user equipment, two downlink control information (DCI) sequences over a physical downlink control channel (PDCCH). Information for a first PDSCH of the at least one PDSCH corresponding to a first DCI sequence of the two DCI sequences is inferred from DCI fields corresponding to a second DCI sequence of the two DCI sequences. The method includes receiving at least one channel state information (CSI) reporting configuration. The method includes receiving a CSI reference signal transmitted from the two network nodes based on the at least one CSI reporting configuration. The method includes transmitting a CSI report based on the least one CSI reporting configuration and the CSI reference signal.