Paging Subgroup Configuration for Idle UE Power Saving
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Solution Overview
Problem
The frequent waking up of wireless terminal devices to monitor paging information results in significant power consumption and battery drain due to false alarms, where the device wakes up only to find it is not targeted.
Innovation Solution
Implementing paging subgroup configuration to determine whether to wake up based on a paging subgroup identifier, using either UE ID-based or CN-assigned subgrouping, or a combination of both, to minimize unnecessary power consumption by ensuring only relevant devices wake up during designated paging occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless terminal devices wake up frequently to monitor paging information, then paging reliability is improved, but power consumption increases
Solution Approach 1:
The patent segments the paging monitoring process by dividing terminal devices into different paging subgroups based on their activity patterns and requirements. Each subgroup monitors paging information at different frequencies and times, allowing the system to maintain reliable paging delivery for all devices while reducing the monitoring burden on individual terminals. This segmentation resolves the contradiction by ensuring that only necessary devices wake up at necessary times.
Solution Approach 2:
The patent implements periodic paging monitoring with varying intervals for different terminal devices. Instead of all devices monitoring at the same frequency, the system assigns different periodic monitoring schedules based on device characteristics and service requirements. This periodic action with differentiated intervals maintains paging reliability for urgent communications while significantly reducing power consumption for devices in low-activity states.
2Reliability
If wireless terminal devices wake up to monitor paging occasions, then paging delivery is ensured, but battery life decreases due to false alarms
Solution Approach 1:
The patent applies preliminary action by pre-classifying terminal devices into paging subgroups before paging occasions occur. The network identifies device characteristics and assigns appropriate monitoring schedules in advance, so devices wake up only when there is a high probability of relevant paging information. This preliminary classification ensures reliable paging delivery for active devices while extending battery life by preventing unnecessary wake-ups for devices in idle states.
Solution Approach 2:
The patent implements local quality by applying different paging monitoring strategies to different subsets of terminal devices based on their specific needs. Rather than a uniform approach, each paging subgroup receives tailored monitoring configurations that match their activity patterns and service requirements. This localized optimization ensures that paging delivery reliability is maintained where needed while battery life is extended where devices can tolerate longer intervals.
3Reliability
If all terminal devices monitor the same paging occasion, then paging information is reliably received, but network signaling overhead increases
Solution Approach 1:
The patent segments the paging monitoring function by dividing terminal devices into multiple paging subgroups that monitor different paging occasions. This segmentation allows the network to broadcast paging information to specific subgroups at different times and frequencies, ensuring that all devices can reliably receive relevant paging information while significantly reducing the total network signaling overhead compared to universal monitoring.
Data Source
AI summary
Methods and device for paging configuration and power saving in wireless terminal devices are disclosed. The disclosed method may be performed by a wireless terminal device. The method may include receiving paging subgroup configuration information from a wireless network; determining a paging subgroup identifier based on the paging subgroup configuration information and a paging subgroup mode of the wireless terminal device; and determining whether to wake up to monitor a paging occasion based on whether the paging subgroup identifier is indicated prior to an arrival of the paging occasion.