UE Power Saving for Paging via Priority Segmentation
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR and LTE, face challenges in power saving due to false paging receptions, where all UEs in a group monitor for a paging message even if not intended for them, leading to unnecessary power consumption.
Innovation Solution
Implementing a method where a base station determines paging behavior based on UE priorities and traffic patterns, allowing it to postpone or group UEs accordingly, thereby reducing false paging and conserving power by ensuring only intended UEs receive paging messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all UEs in a group monitor for paging messages in the same paging occasion, then the paging delivery is simplified and reliable, but power consumption increases due to false paging receptions
Solution Approach 1:
The patent segments the group of UEs into different priority levels (high priority and low priority UEs). This segmentation allows the base station to selectively page only high priority UEs or postpone paging for low priority UEs based on current system conditions, thereby reducing the number of UEs that need to monitor paging messages continuously and reducing overall power consumption while maintaining reliable paging delivery for urgent communications
Solution Approach 2:
The patent changes the paging behavior parameter dynamically based on priority levels. High priority UEs are paged immediately in the current paging occasion, while low priority UEs have their paging postponed to a later occasion. This parameter change in paging timing and behavior reduces the monitoring burden on low priority UEs, thereby reducing their power consumption while ensuring high priority UEs receive pages reliably
2Reliability
If paging messages are transmitted to all UEs in a group, then no paging messages are lost, but unnecessary power consumption occurs when UEs are not intended to be paged
Solution Approach 1:
The patent applies local quality by treating different UEs within the same group differently based on their priority levels. High priority UEs receive full paging attention with immediate notification, while low priority UEs receive postponed paging. This differentiated local treatment ensures that paging resources are focused on UEs that truly need immediate attention, reducing wasted energy on UEs that can wait, while maintaining reliable delivery for high priority communications
Solution Approach 2:
The base station performs preliminary action by determining UE priorities and deciding on paging behavior before actually transmitting paging messages. By pre-classifying UEs into priority groups and pre-determining which UEs should be paged immediately versus postponed, the system avoids transmitting unnecessary paging messages to all UEs, thereby reducing false paging receptions and associated power consumption while ensuring high priority UEs are not missed
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for paging in a wireless communication system. A method that may be performed by a base station (BS) generally includes determining one or more groups of UEs, each group of UEs comprising UEs configured to monitor a same paging occasion (PO) for a same paging radio network temporary identifier (PRNTI). The BS determines whether to postpone paging for a group of UEs based, at least in part, on an indication from a network entity of priorities associated with the UEs in the group. The method generally includes paging or postponing paging for at least one of the UEs in the group based on the determination.