CSI Report Sub-Configuration Selection for Dynamic Channel Reporting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods fail to effectively address how a terminal should perform CSI reporting when a single CSI report configuration includes multiple sub-configurations, which are required due to dynamic changes in the time, frequency, spatial, and power domains, particularly in network energy-saving scenarios.
Innovation Solution
The terminal determines a target sub-configuration based on target information to report CSI at a specific occasion, and the network-side device configures and receives CSI reports accordingly, ensuring that only relevant CSI is reported, thereby reducing energy consumption and improving communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single CSI report configuration includes multiple sub-configurations to adapt to dynamic network conditions, then the adaptability and energy-saving performance are improved, but the complexity of CSI reporting and the difficulty of determining which sub-configuration to report increase
Solution Approach 1:
The patent introduces dynamic indication information (such as DCI or MAC CE) that can dynamically indicate which sub-configuration should be reported at different CSI report occasions. This dynamic mechanism allows the system to adapt to changing network conditions without requiring the terminal to pre-determine all reporting configurations, thereby improving adaptability while managing complexity through centralized control.
Solution Approach 2:
The patent segments the CSI report configuration into multiple sub-configurations, each corresponding to different spatial adaptation patterns or parameter sets. This segmentation allows the network to selectively activate only the necessary sub-configurations based on current network conditions, reducing the overall complexity the terminal must handle while maintaining high adaptability.
2Adaptability or versatility
If multiple sub-configurations are included in one CSI report configuration, then the coverage of different spatial adaptation patterns is improved, but the quantity of configuration parameters and processing overhead increase
Solution Approach 1:
The patent implements a mechanism where only a subset of sub-configurations is activated or indicated at any given time, rather than requiring the terminal to process and report all possible sub-configurations. This partial action approach ensures comprehensive coverage of spatial adaptation patterns is available when needed, while reducing the actual quantity of parameters processed in each reporting instance.
3Reliability
If the terminal reports CSI for all sub-configurations, then the completeness of channel state information is improved, but the energy consumption and reporting overhead increase
Solution Approach 1:
The patent extracts and reports only the necessary CSI information based on the indicated sub-configuration, rather than reporting all possible CSI data. The network can selectively indicate which sub-configuration's CSI should be reported, thereby maintaining reliability of channel state information while significantly reducing terminal energy consumption and reporting overhead.
4Measurement precision
If dynamic indication information is introduced to specify target sub-configuration, then the precision of CSI reporting is improved, but the signaling overhead and complexity of coordination increase
Solution Approach 1:
The patent utilizes existing downlink control mechanisms (DCI and MAC CE) for their intended purposes while also employing them to carry indication information for sub-configuration selection. This multi-functional use of existing signaling structures improves CSI reporting precision without adding separate dedicated signaling channels, thereby minimizing additional signaling overhead.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
This application discloses a method for reporting a channel state information CSI report and a method for receiving a CSI report, and pertains to the field of communication technologies. The method for reporting a channel state information CSI report in embodiments of this application includes: determining, by a terminal according to target information, a target sub-configuration corresponding to CSI to be reported at a target CSI report occasion, where the target sub-configuration is one or more sub-configurations in a set of valid sub-configurations in a CSI report configuration, the set of valid sub-configurations includes at least one of the following: all sub-configurations in the CSI report configuration, one or more default sub-configurations in the CSI report configuration, or one or more activated sub-configurations in the CSI report configuration, and the target information includes at least one of the following: a target rule or target indication information; and reporting, by the terminal, a target CSI report at the target CSI report occasion, where the target CSI report includes CSI corresponding to the target sub-configuration.