Dynamic Group Wake-Up Reconfiguration for 5G NR
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in power conservation and efficient dynamic reconfiguration of wake-up signals for user equipment (UEs) due to changes in traffic status, operational modes, or mobility, which leads to high signaling overhead and latency when reconfiguring group wake-up settings.
Innovation Solution
Implementing dynamic group wake-up reconfiguration using Layer 1 or Layer 2 signaling, such as PDCCH-WUS, to modify wake-up parameters and re-group UEs efficiently, reducing the need for Radio Resource Control (RRC) signaling and minimizing power consumption and network resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If RRC signaling is used to reconfigure group wake-up settings, then wake-up parameters can be updated, but signaling overhead and latency increase
Solution Approach 1:
The patent implements dynamic reconfiguration of group wake-up parameters by transitioning from static RRC signaling to dynamic Layer 1/Layer 2 signaling mechanisms. The base station can update wake-up parameters in real-time based on changing traffic status, operational modes, or mobility conditions, allowing the system to adapt quickly without the high latency of traditional RRC reconfiguration procedures.
Solution Approach 2:
The patent segments the wake-up parameter configuration into group-specific parameters that can be independently updated. By organizing UEs into groups with common wake-up parameters, the system can reconfigure entire groups simultaneously using efficient signaling, reducing overall reconfiguration latency compared to updating individual UE parameters through RRC signaling.
2Adaptability or versatility
If RRC signaling is used to reconfigure group wake-up settings, then wake-up parameters can be updated, but network resource usage increases
Solution Approach 1:
The patent merges multiple wake-up parameter updates into a single group-level signaling message. By combining parameters such as wake-up signal timing, frequency resources, and DRX cycle configurations into unified group configurations, the system reduces the total number of signaling transactions required, thereby conserving network resources and reducing energy consumption compared to individual RRC reconfiguration messages.
3Measurement precision
If individual UE wake-up configurations are maintained, then each UE can be precisely controlled, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by maintaining UE-specific wake-up parameters only when necessary, while using group-level parameters for common configurations. Each UE retains individualized parameters for specific control requirements, but shares common parameters with its group members, reducing overall signaling overhead while preserving necessary precision for UE-specific control scenarios.
Data Source
AI summary
According to an example, a method of wireless communication comprises receiving a group wake-up signal configuration corresponding to a group of UEs that share a wake-up signal associated with a discontinuous reception operation, wherein the group wake-up signal configuration identifies a set of wake-up parameters for at least one of the wake-up signal or the discontinuous reception operation. The method further includes transmitting a wake-up configuration update triggering message, receiving a group wake-up signal configuration update message including at least one new wake-up parameter, and performing the discontinuous reception operation based on the at least one new wake-up parameter. A corresponding method of wireless communication at a base station is also described.