Mask-Based DRX Configuration for Skipping Unneeded Grant Transmissions
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) configured with both discontinuous reception (DRX) cycles and configured grants (CGs) face inefficiencies due to overlapping active and non-active time durations, leading to suboptimal power consumption and resource utilization.
Innovation Solution
Implementing a mask-based configuration that allows UE to skip transmissions during non-active time durations of DRX cycles and enables multiplexing of uplink control information on unused CG resources, using physical-layer, MAC, or RRC signaling to manage DRX and CG configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE performs transmissions during non-active time durations of DRX cycles, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The network performs preliminary actions by configuring DRX parameters and CG resources in advance, allowing the UE to pre-determine optimal transmission timing. The mask configuration is established beforehand to guide the UE on which CG resources to use during active periods, eliminating the need for real-time decisions and reducing processing energy during critical transmission windows.
Solution Approach 2:
The system dynamically adjusts the DRX cycle parameters and CG configurations based on real-time network conditions and UE requirements. The mask can be modified through RRC signaling to adaptively control which CG resources are available during active periods, allowing the system to optimize the balance between transmission reliability and power consumption according to actual operational needs.
2Use of energy by moving object
If UE enters deeper sleep modes during non-active time durations, then power efficiency is improved, but transmission reliability may worsen
Solution Approach 1:
The network performs preliminary configuration of DRX parameters and CG resources, establishing a mask that specifies which CG resources should be used during active periods. This advance planning ensures that when the UE wakes up, it already has the information needed to make reliable transmissions without needing to stay in a lighter sleep state, thus enabling deeper sleep modes while maintaining transmission reliability.
Solution Approach 2:
The system incorporates feedback mechanisms where the network monitors UE performance and network conditions, adjusting DRX parameters and mask configurations accordingly. This feedback loop allows the system to optimize the balance between sleep depth and transmission reliability by learning from actual performance data and adapting the configuration to maintain reliable communications even with deeper sleep modes.
3Use of energy by moving object
If mask configuration is implemented to control CG transmissions, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The mask configuration segments the CG resources into different sets based on their timing characteristics relative to DRX active periods. By dividing the resource space in this way, the UE can process and apply the mask more efficiently, reducing the computational complexity of determining which resources to use. The segmentation is performed at the configuration stage through RRC signaling, simplifying the runtime processing requirements.
Solution Approach 2:
The mask acts as an intermediary structure that mediates between the DRX configuration and CG resources. Instead of the UE directly managing complex interactions between these two configuration types, the mask serves as an intermediate layer that translates and simplifies the control logic. This intermediary approach reduces the complexity at the UE level by providing a clear, pre-computed guide for resource selection during active periods.
4Productivity
If overlapping CG resources are allocated during DRX cycles, then resource utilization is improved, but power management efficiency deteriorates
Solution Approach 1:
The mask configuration segments the CG resources into distinct sets that can be selectively activated during DRX active periods. This segmentation allows the system to maximize resource utilization during active times while ensuring complete power savings during inactive periods. By clearly separating which resources are available when, the system achieves optimal balance between utilization and power efficiency without ambiguity about timing conflicts.
Solution Approach 2:
The system dynamically adjusts the allocation and activation of CG resources based on real-time DRX state transitions. During active periods, the mask enables flexible resource allocation to maximize utilization, while automatically transitioning to a more conservative allocation strategy during inactive periods to ensure power efficiency. This dynamic adaptation allows the system to optimize for different objectives at different times without compromise.
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 may receive a first configuration and a second configuration, wherein the first configuration is for a discontinuous reception (DRX) cycle and the second configuration is for a configured grant (CG), wherein the DRX cycle is associated with a set of active time durations and a set of non-active time durations, and wherein the CG is associated with a transmission in one or more non-active time durations of the set of non-active time durations; receive information identifying a mask, wherein the mask indicates a modified configuration for the transmission in the one or more non-active time durations or a modified multiplexing scheme for the CG; and selectively perform or skip the transmission in accordance with the CG and the mask. Numerous other aspects are provided.