Multiple Active DRX Configurations for 5G UE Power Management
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Solution Overview
Problem
Current 5G NR technologies face limitations in configuring optimal discontinuous reception (DRX) cycles for user equipment (UE), which can lead to inefficient power management and increased signaling overhead, particularly in scenarios with diverse traffic flows having non-integer periodicities.
Innovation Solution
Implementing multiple active DRX configurations with distinct parameters for different traffic flows, allowing the UE to transition between active and inactive states based on specific timers and wake-up signals, enabling more precise power management and reduced computational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single DRX configuration is used for all traffic flows, then device complexity is reduced, but power management efficiency deteriorates due to inability to optimize for diverse traffic patterns
Solution Approach 1:
The patent segments the single DRX configuration into multiple DRX configurations, each tailored to specific traffic flows or service types. This allows different traffic patterns (e.g., voice, video, data) to have optimized DRX parameters independently, improving power management efficiency while maintaining manageable complexity through structured organization of configurations.
Solution Approach 2:
The patent introduces dynamic DRX configuration selection where the UE can switch between different DRX configurations based on current traffic conditions and network signaling. This dynamic adaptation enables optimal power management for diverse traffic patterns without requiring the UE to maintain all possible configurations simultaneously, balancing complexity and efficiency.
2Use of energy by moving object
If DRX cycles are extended to reduce power consumption, then power management efficiency improves, but signaling overhead increases due to more frequent wake-ups
Solution Approach 1:
The patent applies different DRX cycle lengths and wake-up strategies to different traffic flows based on their specific characteristics. Critical traffic types with strict latency requirements maintain shorter DRX cycles or dedicated wake-up channels, while non-critical traffic uses extended DRX cycles, thereby reducing overall power consumption without excessive signaling overhead for the entire system.
Solution Approach 2:
The patent implements partial wake-up mechanisms where the UE can wake up for specific purposes (e.g., receiving wake-up signals for critical traffic) without fully activating all DRX configurations. This selective wake-up approach reduces power consumption by keeping most configurations in deep sleep while maintaining the ability to respond to critical signaling needs.
3Use of energy by moving object
If multiple DRX configurations are implemented to optimize for diverse traffic flows, then power management efficiency improves, but device complexity increases
Solution Approach 1:
The patent designs a universal DRX configuration framework where a single set of configuration parameters and management procedures can handle multiple traffic flows and service types. The framework provides standardized interfaces for network nodes to signal which configuration to use, and for the UE to switch between configurations, thereby achieving multi-functionality without proportionally increasing complexity.
Solution Approach 2:
The patent incorporates feedback mechanisms where the network node monitors traffic patterns and provides guidance or commands to the UE about which DRX configuration to activate. This external feedback reduces the UE's computational burden for configuration selection and management, as the network's traffic analysis guides the UE's DRX configuration choices, thereby improving power management efficiency without excessive device complexity.
Data Source
AI summary
A network node may configure a UE for discontinuous reception (DRX). The network node may transmit, to the UE, a plurality of DRX configurations. Further, the network node may transmit, to the UE, information associated with an active time of a first DRX configuration of the plurality of DRX configurations, with the active time being different from an inactive time of the first DRX configuration. Further, the network node may transmit, to the UE, data based on the active time of the first DRX configuration. The UE may receive the plurality of DRX configurations. Further, the UE may receive the information associated with the active time of the first DRX configuration. The UE may monitor for data based on the active time of the first DRX configuration.