Paging Sub-Group Configuration for Wireless Power Saving
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Solution Overview
Problem
Current wireless communication systems face challenges in power saving, particularly in RRC inactive or idle states, where devices experience high power consumption due to inefficient paging processes, leading to battery drain and performance degradation.
Innovation Solution
The implementation of enhanced paging processes in wireless communication systems, specifically for devices in RRC inactive or idle states, involves configuring devices into paging groups and using advanced indicators to determine which groups need to monitor control channels, thereby reducing unnecessary power usage and improving power saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices in RRC inactive or idle states monitor control channels continuously to ensure reliable communication, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent divides the device population into multiple paging groups (first paging group, second paging group, etc.) and assigns different monitoring behaviors to different groups. Some groups monitor control channels while others do not, based on configuration indicators. This segmentation allows the system to maintain communication reliability for devices that need it while allowing other devices to save power by not monitoring.
Solution Approach 2:
The patent introduces dynamic configuration where the network can indicate to devices whether they should monitor control channels based on their paging group assignment and current state. This dynamic approach allows devices to switch between monitoring and non-monitoring modes, optimizing the balance between reliability and power consumption based on actual communication needs.
2Reliability
If all devices monitor control channels during paging operations to ensure no messages are missed, then paging reliability is improved, but unnecessary power consumption increases
Solution Approach 1:
The patent segments devices into different paging groups and applies different monitoring requirements to each group. By configuring only certain groups to monitor control channels during paging operations, the system ensures paging reliability for devices that require it while preventing unnecessary power consumption in devices that can operate without monitoring.
Solution Approach 2:
The patent applies different quality characteristics to different paging groups. Some groups are configured with monitoring enabled (higher reliability quality) while others have monitoring disabled (lower power consumption quality). This local differentiation allows the system to optimize overall power consumption while maintaining adequate paging reliability for critical devices.
3Loss of information
If devices frequently wake up to check for paging messages to maintain up-to-date communication status, then communication status accuracy is improved, but battery life decreases
Solution Approach 1:
The patent implements periodic paging where devices wake up at predetermined intervals to check for messages rather than continuously monitoring. By configuring devices to monitor only at specific periodic intervals based on their paging group assignment, the system maintains adequate communication status accuracy while significantly extending battery life compared to continuous monitoring.
Solution Approach 2:
The patent allows dynamic adjustment of monitoring behavior where devices can be configured to monitor at different periodic intervals or not monitor at all, depending on their paging group assignment and communication requirements. This dynamic configuration optimizes the trade-off between maintaining accurate communication status and preserving battery life.
Data Source
AI summary
Computer-readable media storing instructions for wireless communications are described. The instructions enable paging early indication using paging sub-groups. Control information indicates paging sub-group(s) for a paging occasion. A control channel is monitored by a wireless device in the paging occasion in response to the paging sub-group(s) comprising a first paging sub-group associated with the wireless device.