DRX Group Segmentation for CSI Measurement in 5G UE
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Solution Overview
Problem
In wireless communication systems, especially in 5G networks, there is a need for efficient measurement and reporting of channel state information (CSI) while minimizing power consumption, particularly when discontinuous reception (DRX) is configured for terminals.
Innovation Solution
A method where a user equipment (UE) receives configuration information for multiple DRX groups and identifies whether CSI measurement and reporting are included in the DRX activation periodicity, allowing it to perform these tasks accordingly, optimizing power saving by determining the appropriate DRX groups for measurement and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception (DRX) is configured for carrier aggregation to reduce power consumption, then power saving is improved, but channel state information measurement and reporting reliability deteriorates
Solution Approach 1:
The patent divides the cell group into multiple DRX groups, where each DRX group can be independently configured with its own DRX parameters. This allows different cell groups to have different reception patterns, enabling the terminal to perform CSI measurement and reporting in specific DRX groups while maintaining power saving in others. The segmentation of DRX groups resolves the contradiction by allowing selective activation of measurement functions without requiring continuous reception across all cell groups.
Solution Approach 2:
The patent introduces dynamic configuration of DRX groups where the terminal can be configured with multiple DRX groups and selectively activate or deactivate specific groups based on measurement needs. The terminal identifies which DRX groups include CSI measurement and reporting based on configuration information, allowing dynamic adjustment of power consumption versus reliability trade-off. This dynamic approach enables the system to adapt to changing network conditions and optimize the balance between power saving and measurement reliability.
2Use of energy by moving object
If multiple DRX groups are configured for carrier aggregation, then power saving efficiency is improved, but device complexity increases
Solution Approach 1:
The patent makes the DRX group configuration mechanism universal by using a standardized configuration information structure that applies to all cell groups. The terminal receives configuration information that uniformly describes multiple DRX groups, and the same identification and selection mechanisms work across all groups. This universal approach simplifies the complexity by providing a unified method for handling multiple DRX groups rather than requiring group-specific complex management for each cell group.
Data Source
AI summary
The present disclosure relates to a method and apparatus for providing channel state information in a wireless communication system. A user equipment according to an embodiment of the present disclosure may receive configuration information for a plurality of discontinuous reception (DRX) groups corresponding to a plurality of cell groups including cells included in one cell group, may identify, based on the received configuration information, whether at least one of measurement and reporting of channel state information for the plurality of cell groups is included in a DRX activation periodicity, and may perform the measurement and the reporting of the channel state information, based on a result of the identifying.