UE Power Saving Configuration Selection in RRC Idle State
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Solution Overview
Problem
Current wireless communication systems, particularly 5G NR, face challenges in optimizing power saving mechanisms for user equipment (UE) in different radio resource control (RRC) states, as unified power saving configurations are not efficient for diverse user equipment applications, leading to suboptimal power consumption and network performance.
Innovation Solution
A method and device for performing power saving operations in UE, where the UE receives multiple power saving configurations from a base station, selects one based on predefined rules or indications, and applies it, allowing dynamic control of power saving mechanisms tailored to specific UE states and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unified power saving configurations are used for all UE in RRC idle/inactive states, then device complexity is reduced, but power saving efficiency deteriorates due to inability to adapt to different UE applications and traffic patterns
Solution Approach 1:
The patent segments power saving configurations into multiple distinct configurations (first power saving configuration, second power saving configuration, etc.) that can be selectively applied based on UE state, traffic type, and application characteristics. This segmentation allows the system to achieve adaptability without requiring a single complex unified configuration, as each segment can be independently optimized and selected.
Solution Approach 2:
The patent implements dynamic power saving configuration selection where the UE autonomously determines which configuration to apply based on real-time conditions such as RRC state transitions, traffic patterns, and application requirements. This dynamic adaptation mechanism allows the system to optimize power saving efficiency without requiring complex static configurations, as the selection process adapts to changing conditions.
2Adaptability or versatility
If multiple power saving configurations are provided and UE autonomously selects, then power saving efficiency is improved through adaptation to different UE states, but UE processing complexity increases
Solution Approach 1:
The patent enables the UE to autonomously select and apply the appropriate power saving configuration based on its own state and requirements without requiring continuous network intervention. The UE monitors its RRC state, traffic conditions, and application needs to make independent decisions about configuration selection, thereby optimizing power saving efficiency while avoiding the complexity of centralized control mechanisms.
Solution Approach 2:
The patent utilizes different parameters and criteria for configuration selection based on UE state transitions and traffic characteristics. By changing the selection parameters dynamically (e.g., based on RRC state, traffic type, or application priority), the system can optimize power saving efficiency without requiring the UE to process all possible configuration combinations, as the parameters guide the selection process.
3Adaptability or versatility
If power saving configurations are frequently updated to adapt to changing network conditions, then network performance is improved, but signaling overhead increases
Solution Approach 1:
The patent provides multiple power saving configurations in advance to the UE before actual usage occurs. These pre-configured options allow the UE to select appropriate configurations without requiring frequent network signaling updates. The network can update configurations periodically or trigger them based on significant network changes, thereby reducing signaling overhead while maintaining adaptability to varying network conditions.
Data Source
AI summary
A method of performing a power saving operation for a user equipment (UE) is provided. The method includes receiving, from a base station (BS), a plurality of power saving configurations, while the UE is in a radio resource control (RRC) idle state or an RRC inactive state, selecting one of the plurality of power saving configurations according to a rule predefined in the UE or a first indication received from the BS, and applying the selected one of the plurality of power saving configurations for the power saving operation.