Paging Indication Mechanism for Reducing UE Power Consumption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in power consumption and signaling overhead due to the need for terminal devices to regularly monitor paging occasions, often resulting in unnecessary wake-ups and false-paging alarms, especially in RRC Inactive/Idle mode, where UEs share the same paging occasions and experience high false-alarm rates.
Innovation Solution
A method where a first device receives a configuration of a paging indication from a second device, including location and mapping information, to determine the appropriate paging occasion for monitoring, allowing the first device to skip unnecessary monitoring and reduce power consumption and signaling overhead by only monitoring when a paging message is specifically associated with it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal devices monitor paging occasions regularly in RRC Inactive/Idle mode, then they can receive paging messages, but power consumption increases and false-paging alarms occur
Solution Approach 1:
The network device sends a paging indication message before the actual paging message to notify the terminal device in advance. The terminal device monitors the paging indication message first, and only wakes up to monitor the full paging message if the indication shows paging is present. This preliminary notification mechanism allows terminals to stay in low-power state longer and avoid unnecessary wake-ups for false alarms.
Solution Approach 2:
A paging indication message is introduced as an intermediary between the network's paging decision and the terminal's paging message reception. This intermediate signal acts as a filter, telling terminals whether they need to fully monitor the paging occasion or can remain in sleep mode, thereby reducing power consumption while maintaining reliable paging reception.
2Reliability
If terminal devices monitor paging occasions regularly, then they can receive paging messages, but signaling overhead increases
Solution Approach 1:
The paging indication message extracts and separates the critical notification function from the full paging message. Instead of requiring terminals to fully decode and process every paging message, the system extracts just the essential presence/absence information into a separate indication message. This reduces the signaling overhead by eliminating unnecessary transmission and processing of full paging messages for terminals without actual paging.
3Productivity
If multiple UEs share the same paging occasions, then resource usage is optimized, but false-alarm rates increase
Solution Approach 1:
The system segments the paging indication by introducing different indication values that correspond to different paging scenarios. The paging indication message can indicate whether paging is present for specific UE groups or individually. This segmentation allows multiple UEs sharing the same paging occasion to receive differentiated notifications, reducing false alarms while maintaining efficient resource sharing.
Data Source
AI summary
According to embodiments of the present disclosure, a first device receives a configuration of a paging indication from a second device. The configuration indicates how to monitor the paging indication and mapping between the paging indication and a set of paging occasions. The first device monitors a paging message in a paging occasion associated with the first device. In this way, it can reduce latency and save power at the first device. Further, it also saves signaling for paging.