LP-WUS Subgrouping for Lower False Alarms and UE Power Saving
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Solution Overview
Problem
Current wireless communication systems lack a uniform mechanism for low power wake-up signal (LP-WUS) subgrouping, which affects false alarm rates and power saving gains when both LP-WUS and early paging indication (PEI) signals are monitored by user equipment (UE).
Innovation Solution
Implement LP-WUS subgrouping with configuration elements that support both network-based and UE-identifier-based subgrouping, allowing independent or tandem operation with PEI, and define occasions and payload sizes for LP-WUS signals to optimize power consumption and reduce false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If LP-WUS subgrouping is implemented to reduce false alarm rates and improve power savings, then power consumption is reduced and false alarm rate decreases, but device complexity increases due to additional configuration elements and subgrouping mechanisms
Solution Approach 1:
The UE population is segmented into multiple subgroups based on UE identifiers or network configuration. Each subgroup monitors LP-WUS signals at different time occasions, allowing the system to reduce false alarm rates by distributing monitoring loads across subgroups rather than having all UEs monitor simultaneously, thereby improving power efficiency without requiring complete system redesign
Solution Approach 2:
The LP-WUS monitoring configuration is made dynamic through configurable parameters including payload sizes (1, 2, or 4 bits), varying numbers of subgroups (1, 2, 4, or 8), and flexible timing offsets. This dynamic configurability allows the system to adapt to different traffic conditions and UE power requirements, optimizing the balance between power savings and complexity for specific deployment scenarios
2Adaptability or versatility
If multiple configuration parameters are defined for LP-WUS subgrouping to provide flexibility, then adaptability improves, but device complexity increases due to more configuration elements to manage
Solution Approach 1:
The LP-WUS configuration framework is designed with universal parameters that can accommodate multiple subgrouping scenarios (different numbers of subgroups, different payload sizes, different timing configurations). This multi-functional design allows a single configuration mechanism to handle various adaptability requirements without requiring separate specialized configurations for each scenario, thereby managing complexity while maintaining versatility
Solution Approach 2:
The system provides adaptability through configurable parameters such as payload size (1, 2, or 4 bits), number of subgroups (1, 2, 4, or 8), and timing offsets. By changing these parameters, the system can adapt to different network conditions and UE requirements. The patent manages the complexity of multiple parameters by providing standardized configuration options and systematic methods for determining optimal parameter sets
Data Source
AI summary
Various aspects of the present disclosure relate to low power wake-up signal subgrouping information. An apparatus, such as a UE, receives low power wake-up signal configuration information comprising low power wake-up signal subgrouping information, and generates, based at least in part on the low power wake-up signal subgrouping information, a low power wake-up signal including a subgroup identifier.