Wake-Up Signal Resource Patterns for Grouped UE Reception
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in battery usage and resource allocation for wakeup signals, particularly in scenarios involving multiple user equipment (UEs), where individual UE wake-up signals can be wasteful and lack diversity.
Innovation Solution
Implementing techniques for resource allocation that provide frequency, time, and spatial diversity in wakeup signals by grouping UEs and using multiple antenna ports, antennas, or precoding sets, tailored to specific resource patterns for each group, applicable to both anchor and non-anchor carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual UE wake-up signals are transmitted to each user equipment, then each UE can be awakened reliably, but battery usage becomes inefficient and resource allocation becomes wasteful
Solution Approach 1:
The patent groups multiple UEs into UE groups and transmits a single wake-up signal to awaken all UEs in the group simultaneously. This merging approach consolidates multiple individual wake-up transmissions into one unified signal, reducing overall energy consumption while maintaining reliable wake-up functionality for all grouped UEs.
Solution Approach 2:
The patent segments UEs into multiple UE groups based on their wake-up signal resource patterns. By dividing the UE population into distinct groups that monitor different time-frequency resources, the system can efficiently manage wake-up signals for multiple UEs without requiring each UE to continuously monitor all possible signals, thus reducing battery consumption.
2Reliability
If wake-up signals are transmitted to multiple UEs individually, then each UE receives reliable notification, but resource allocation becomes inefficient and lacks diversity
Solution Approach 1:
The patent combines multiple UE wake-up notifications into group-based wake-up signals. By merging the wake-up function for multiple UEs into single group signals transmitted on dedicated resource patterns, the system improves resource allocation efficiency while ensuring reliable delivery to all intended UEs through the group mechanism.
Solution Approach 2:
The patent introduces diversity in the time-frequency-resource dimension by assigning different resource patterns to different UE groups. This dimensional approach allows simultaneous transmission of multiple wake-up signals to different groups without collision, improving both resource efficiency and signal delivery reliability through frequency and time diversity.
3Reliability
If UEs continuously scan for wake-up signals, then no wake-up signal is missed, but battery power is excessively consumed
Solution Approach 1:
The patent segments the continuous scanning requirement into discrete, group-specific monitoring occasions. Each UE group monitors wake-up signals only at their assigned resource patterns rather than continuously scanning all possible signals. This segmentation reduces the scanning burden and power consumption while maintaining reliable detection through the configured resource patterns.
Solution Approach 2:
The patent implements periodic wake-up signal monitoring at specifically configured resource patterns for each UE group. Instead of continuous scanning, UEs periodically check for wake-up signals at their designated time-frequency resources. This periodic action significantly reduces power consumption while ensuring reliable wake-up signal detection at the appropriate intervals.
4Productivity
If a single wake-up signal is transmitted, then resource usage is efficient, but diversity for different UE groups cannot be achieved
Solution Approach 1:
The patent extends the single wake-up signal concept into multiple dimensions by assigning different time-frequency-resource patterns to different UE groups. This dimensional expansion allows the system to maintain transmission efficiency through structured resource allocation while achieving diversity and robustness through frequency, time, and spatial separation of wake-up signals for different groups.
Data Source
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AI summary
A method, an apparatus, a base station, a user equipment, and a computer program product for wireless communication are provided. The base station may configure resource allocation for wakeup signaling based at least in part on one or more resource patterns corresponding to different user equipment groups and/or antenna port configurations. The user equipment may receive a wakeup signal based at least in part on the resource allocation, detect the wakeup signal based at least in part on a preamble of the wakeup signal, and receive a subsequent communication based at least in part on the wakeup signal. Numerous other aspects are provided.