NR Paging Early Indication for Low-Power UE Monitoring
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in signal transmission and reception procedures, particularly in managing power consumption and latency for diverse user equipment types, especially in emerging technologies like NR.
Innovation Solution
The implementation of a method and apparatus for efficient signal transmission and reception in wireless communication systems, including techniques for UE grouping and paging early indication (PEI) to optimize power usage and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional wireless communication systems use conventional signal transmission and reception procedures, then system compatibility is maintained, but power consumption increases and latency increases for diverse user equipment types
Solution Approach 1:
The patent segments user equipment into different groups (first user equipment and second user equipment) with distinct reception behaviors. First UE monitors paging messages continuously, while second UE skips monitoring based on PEI indications. This segmentation allows optimization of power consumption for specific UE types without compromising overall system reliability.
Solution Approach 2:
The patent introduces Paging Early Indication (PEI) that provides advance information about upcoming paging messages before the actual paging occasion. This preliminary action allows second user equipment to prepare for power saving by skipping unnecessary monitoring, reducing power consumption while maintaining reliable communication through the gNodeB's scheduling control.
2Reliability
If user equipment continuously monitors paging messages, then signal reception reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic monitoring behavior where user equipment adjusts its paging message monitoring based on real-time conditions. Second user equipment dynamically skips monitoring when PEI indicates no paging message is transmitted, while first user equipment continues monitoring. This dynamic adjustment optimizes the balance between power consumption and signal reception reliability.
Solution Approach 2:
The gNodeB transmits PEI information as feedback about upcoming paging occasions to user equipment. This feedback mechanism allows second user equipment to make informed decisions about whether to monitor paging messages, reducing power consumption while maintaining reliable communication through the feedback loop between gNodeB and UE.
3Use of energy by moving object
If paging message transmission is optimized for power saving, then power efficiency improves, but latency in signal reception increases
Solution Approach 1:
The patent uses Paging Early Indication (PEI) as a preliminary action that provides advance notice about paging message transmission. This allows second user equipment to skip monitoring when unnecessary, reducing power consumption. The PEI is transmitted before the actual paging occasion, enabling timely decision-making that balances power efficiency with acceptable latency.
4Adaptability or versatility
If diverse user equipment types are supported with customized reception methods, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent segments user equipment into distinct categories (first user equipment and second user equipment) with different reception behaviors. This segmentation enables customized reception methods for different UE types while managing complexity through clear classification. The gNodeB configures different monitoring behaviors based on UE type, improving adaptability without excessive complexity.
Solution Approach 2:
The patent changes operational parameters (monitoring behavior, power consumption, latency characteristics) based on user equipment type. First user equipment uses continuous monitoring parameters, while second user equipment uses PEI-based skipping parameters. This parameter adaptation allows diverse UE types to be supported with optimized settings without significantly increasing overall system complexity.
Data Source
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AI summary
According to at least one of embodiments of the present disclosure, a UE may receive paging early indication (PEI)-related information through higher-layer signaling, attempt to detect a PEI associated with 'M' paging occasions (POs) based on the PEI-related information, determine whether to perform or skip monitoring of a physical downlink control channel (PDCCH) in a specific PO related to the UE among the plurality of POs, based on the detected PEI, and receive at least one of paging downlink control information (DCI) carried by the PDCCH or a physical downlink shared channel (PDSCH) scheduled by the paging DCI, in a state in which the UE determines to perform monitoring of the PDCCH.