Cross-DRX CSI Reporting With Flag-Controlled Uplink Timing
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Solution Overview
Problem
In wireless communication systems with multiple DRX configurations, there is a challenge in ensuring efficient reporting of channel state information (CSI) across different DRX groups, particularly when the active times of primary and secondary DRX groups do not align, leading to resource wastage and inefficiencies.
Innovation Solution
A flag mechanism is introduced to determine whether CSI associated with a secondary DRX group can be transmitted outside the active time of a primary DRX group, allowing selective transmission and multiplexing with uplink control information (UCI) in the primary DRX group's communication channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If CSI associated with secondary DRX group is transmitted only during active time of primary DRX group, then power consumption is reduced, but CSI reporting timeliness and reliability deteriorate
Solution Approach 1:
The patent introduces a dynamic transmission mechanism where CSI from secondary DRX group can be flexibly transmitted during active time of primary DRX group based on a configurable flag. This allows the system to adapt between power-saving mode (flag disabled) and reliable reporting mode (flag enabled), resolving the contradiction between power consumption and reporting reliability through dynamic parameter adjustment.
2Device complexity
If active times of primary and secondary DRX groups are aligned, then system complexity is reduced, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent segments the DRX system into primary and secondary DRX groups with independent active time configurations. This allows each group to operate with optimized timing independently, improving resource utilization efficiency without requiring alignment between groups, thus resolving the contradiction between system complexity and resource utilization.
Solution Approach 2:
The patent introduces a flag parameter as an intermediary mechanism that mediates the interaction between primary and secondary DRX groups. This flag controls whether CSI from secondary group can be transmitted during primary group's active time, enabling efficient cross-group resource utilization without increasing configuration complexity.
3Device complexity
If CSI transmission is restricted to active time only, then device complexity is reduced, but information transmission completeness deteriorates
Solution Approach 1:
The patent changes the transmission parameter by introducing a flag that controls CSI transmission behavior. When the flag is enabled, CSI from secondary DRX group can be transmitted during primary DRX group's active time, ensuring information completeness without significantly increasing device complexity, as the flag provides a simple binary control mechanism.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine whether a flag is enabled or is disabled, the flag indicating whether channel state information (CSI) associated with a secondary discontinuous reception (DRX) group is permitted to be transmitted outside of an active time associated with a primary DRX group. The UE may selectively transmit the CSI associated with the secondary DRX group in an uplink communication associated with the primary DRX group based at least in part on whether the flag is enabled or is disabled. Numerous other aspects are provided.