Paging Subgroup Wake-Up Signaling for Lower False Paging Power
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Solution Overview
Problem
The high power consumption of terminal devices due to unnecessary monitoring of paging messages in mobile communication systems, particularly exacerbated by false paging alarms, is a concern that existing technologies have not adequately addressed.
Innovation Solution
A paging method that associates wake-up service (WUS) states with paging subgroups, allowing terminal devices to determine whether to monitor paging messages based on their subgroup affiliation, thereby reducing unnecessary power consumption by optimizing monitoring modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all terminal devices periodically monitor PDCCH messages to ensure reliable paging reception, then paging reliability is improved, but power consumption increases
Solution Approach 1:
The patent divides terminal devices into different paging subgroups and assigns different monitoring strategies to each subgroup. Some subgroups monitor PDCCH at all paging occasions, while others monitor only at specific occasions based on WUS indication, thereby segmenting the monitoring burden and reducing overall power consumption while maintaining reliable paging delivery.
Solution Approach 2:
The patent introduces WUS (Wake-Up Signal) as an intermediary mechanism between the paging indication and actual PDCCH monitoring. The WUS acts as a mediator that tells terminal devices whether to wake up and monitor PDCCH or remain in low-power state, thus reducing unnecessary monitoring while ensuring pages are received reliably.
2Reliability
If terminal devices monitor paging messages at all paging occasions to ensure no pages are missed, then paging completeness is improved, but false paging alarms increase
Solution Approach 1:
The patent applies different monitoring qualities to different terminal devices based on their subgroup assignments. Instead of uniform monitoring, each terminal device monitors with appropriate density according to its local requirements, reducing false alarms for devices that don't need frequent monitoring while maintaining completeness for those that do.
Solution Approach 2:
The patent uses WUS as a preliminary action before actual PDCCH monitoring. The WUS is sent in advance to indicate whether terminal devices should wake up for paging, allowing the system to pre-filter which devices need to monitor, thereby reducing false alarms while ensuring no legitimate pages are missed.
3Reliability
If terminal devices monitor PDCCH at every paging occasion to ensure reliable reception, then paging reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes the paging monitoring behavior dynamic by introducing WUS-based conditional monitoring. Terminal devices adapt their monitoring behavior based on WUS indications received at each paging occasion, switching between monitoring and non-monitoring states dynamically, thereby reducing complexity while maintaining reliability through adaptive behavior.
Data Source
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AI summary
This application provides a paging method and a relevant device, and belongs to the technical field of communications. The paging method is applied to a terminal device, and includes: receiving configuration information sent by a base station, where the configuration information includes a mapping relationship between paging subgroups and WUS states and includes a total quantity of subgroups of the PO and/or a paging subgroup corresponding to the terminal device indicated by the base station; according to the total quantity of subgroups of the PO or the paging subgroup corresponding to a terminal indicated by the base station, obtaining a first paging subgroup corresponding to the terminal device, where the first paging subgroup corresponds to a first WUS state; and monitoring the WUS. According to the method, the WUS states are associated with the paging subgroups, and the simpler WUS is utilized to indicate whether the terminal device in a certain corresponding paging group needs to monitor the paging or not, so that the problem of too high power consumption caused by additional monitoring of paging messages due to false paging alarms of the terminal device is solved.