CSI Sub-Report Mapping for Energy-Saving Wireless Links
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication applications, dynamic adjustments in network devices for energy-saving modes can cause inaccurate or untimely reporting of Channel State Information (CSI), affecting transmission performance.
Innovation Solution
A method and apparatus for mapping CSI that involves a terminal equipment receiving a CSI report configuration with multiple sub-configurations, triggered by indication information, and determining a CSI report based on a field mapping order to ensure accurate CSI reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If network device dynamically adjusts the number of antennas or transmission power for energy saving, then energy consumption is reduced, but channel state information reporting accuracy deteriorates
Solution Approach 1:
The patent segments the CSI reporting process into multiple parts: the network device sends indication information to trigger specific CSI sub-configurations, the terminal equipment selectively reports only the triggered CSI parts, and the network device processes only the relevant CSI information. This segmentation allows energy-saving operation while maintaining accurate CSI reporting for active configurations.
Solution Approach 2:
The patent implements dynamic CSI reporting where the network device can flexibly adjust which CSI sub-configurations are active based on current channel conditions and energy-saving requirements. The terminal equipment dynamically triggers and reports only the necessary CSI parts, adapting the reporting behavior to current operational needs rather than reporting all CSI continuously.
2Loss of energy
If network device turns off some antennas for energy saving, then energy consumption is reduced, but transmission performance deteriorates
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure multiple CSI sub-configurations corresponding to different antenna configurations. Before actually turning off antennas for energy saving, the system has already prepared the appropriate CSI reporting configurations, so when antennas are deactivated, the terminal can immediately report accurate CSI for the remaining active antennas without performance degradation.
3Reliability
If terminal equipment reports all CSI continuously, then transmission performance is maintained, but uplink resource consumption increases
Solution Approach 1:
The patent extracts only the necessary CSI information for reporting. Instead of reporting all configured CSI continuously, the network device sends indication information to trigger specific CSI sub-configurations, and the terminal equipment extracts and reports only those triggered parts. This extraction principle reduces uplink resource consumption while maintaining transmission performance by reporting only relevant CSI information.
Data Source
AI summary
An apparatus for mapping channel state information (CSI) includes: a first receiver, configured to receive a CSI report configuration, the CSI report configuration being related to P CSI sub-reports, the CSI report configuration comprising P sub-configurations, one of the sub-configurations corresponding to one of the CSI sub-reports; a second receiver, configured to receive indication information, the indication information being used to trigger/indicate/activate N sub-configurations of the P sub-configurations, where N is greater than or equal to 1 and less than or equal to P; and processor circuitry, configured to determine a CSI report according to the indication information and according to a CSI mapping order, wherein the CSI report comprises at least one of the CSI sub-reports corresponding to the N sub-configurations.