UE Paging Early Indication for Low-Power Paging Occasion Monitoring
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Solution Overview
Problem
Paging processes for user equipment (UE) in RRC_IDLE or RRC_INACTIVE states consume excessive power due to unnecessary measurements and detections, even when no paging message is received.
Innovation Solution
Implementing a paging early indication (PEI) system that associates specific paging occasions (POs) with a UE, using configuration information to determine a first time period for PEI transmission, allowing the UE to detect a target bit indicating the presence of a paging message or short message only within this period, thereby reducing unnecessary measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE monitors every paging occasion to receive paging messages, then paging reliability is improved, but power consumption increases due to unnecessary measurements and detections
Solution Approach 1:
The patent introduces a preliminary indication mechanism where the network sends a paging indication message before the actual paging occasion. This preliminary action allows the UE to determine in advance whether it needs to monitor the upcoming PO, thereby avoiding unnecessary measurements and detections while ensuring paging reliability when needed.
Solution Approach 2:
The patent introduces an intermediary paging indication message that mediates between the network's paging transmission and the UE's monitoring behavior. This intermediary mechanism provides the UE with advance notice about upcoming paging occasions, allowing it to adjust its monitoring activity and reduce power consumption without missing actual paging messages.
2Measurement precision
If the UE performs measurements and detections at every paging occasion, then paging detection accuracy is improved, but unnecessary power consumption occurs when no paging message is present
Solution Approach 1:
The network performs a preliminary action by sending the paging indication message before the PO. This allows the UE to prepare selectively - performing measurements and detections only when the indication suggests paging is present, thereby maintaining detection accuracy while avoiding unnecessary energy loss during idle POs.
3Use of energy by moving object
If the UE reduces monitoring activity to save power, then power consumption decreases, but paging reception reliability may be compromised
Solution Approach 1:
The patent implements a feedback mechanism where the network provides paging indication information to the UE based on actual paging needs. This feedback allows the UE to adjust its monitoring activity dynamically - reducing power consumption when no paging is expected while maintaining reliability when paging is actually present, as the indication feedback ensures the UE monitors the correct POs.
Data Source
AI summary
Embodiments of the present application relate to methods and apparatuses for paging. An exemplary method may include: receiving paging configuration information, paging early indication (PEI) configuration information, and paging occasion (PO) association configuration information; determining a target PO associated with a UE based on the paging configuration information; determining a PEI based on the target PO and the PEI configuration information; determining a first time period for the PEI based on the PO association configuration information; and in the case that the target PO is within the first time period, determining that the target PO is associated with the PEI.