WUS Sub-group Division for UE Power Efficiency
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in wake-up signal (WUS) grouping, leading to unnecessary UE awakenings and compatibility issues among base stations with different WUS sub-group capabilities, resulting in sub-optimal power and resource usage.
Innovation Solution
The division of WUS groups into sub-groups based on paging frequency and the mapping of network device-level WUS sub-groups to base station-level WUS sub-groups, using criteria such as paging probability and frequency, to align with individual base station capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If WUS groups are not divided into sub-groups, then the system is simpler to implement, but UE power efficiency deteriorates due to unnecessary awakenings
Solution Approach 1:
The patent divides a WUS group into multiple WUS sub-groups based on paging frequency characteristics. UEs with similar paging behaviors are grouped together, allowing the network to send targeted WUS signals only to relevant sub-groups. This segmentation reduces unnecessary UE awakenings and improves power efficiency while maintaining manageable system complexity through structured organization.
2Adaptability or versatility
If base stations use different WUS sub-group capabilities, then each base station can be optimized for its specific needs, but compatibility issues arise between base stations
Solution Approach 1:
The patent introduces configurable parameters such as paging frequency thresholds and sub-group sizes that allow base stations to adapt their WUS sub-grouping strategies to their specific capabilities and traffic patterns. By standardizing these parameters and their ranges, the system enables base station optimization while maintaining compatibility across the network through consistent parameter interpretation and supported capability sets.
3Productivity
If all UEs are monitored for paging regardless of relevance, then paging delivery is ensured, but network resources are wasted on unnecessary transmissions
Solution Approach 1:
The patent applies local quality by tailoring WUS monitoring and paging reception behavior to individual UE characteristics and their assigned sub-groups. Instead of uniform monitoring for all UEs, the system enables UEs to monitor only their relevant WUS sub-group signals and receive paging only when their specific sub-group is paged. This localized approach ensures reliable paging delivery to intended recipients while eliminating wasteful network transmissions to UEs with no relevant paging.
Data Source
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AI summary
A wakeup signal (WUS) group that may be divided into WUS sub-groups, criteria or metrics for dividing the WUS group into a set of WUS sub-groups, and signaling or messaging to support the division of the WUS group into the set of WUS sub-groups are provided. For example, a set of UEs may be divided into WUS sub-groups based at least in part on respective frequencies of occurrence of paging occasions for the set of UEs (e.g., based at least in part on traffic type, observations regarding past paging occasions, predictions regarding future paging occasions, and/or the like) and/or based at least in part on other considerations. Furthermore, some techniques and apparatuses described herein provide for the mapping of network device-level WUS sub-groups (e.g., supported by a network device such as an MME) to base station-level WUS sub-groups (e.g., supported by a base station).