5G NR Paging Early Indication to Reduce Unnecessary PO Monitoring
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Solution Overview
Problem
There is a need for improvements in 5G New Radio (NR) technology to enhance power efficiency and reduce power consumption in wireless communication systems by optimizing paging processes, particularly through the use of paging early indications (PEIs) to minimize unnecessary monitoring of paging occasions (POs) by user equipment (UEs).
Innovation Solution
A method where a base station transmits paging early indications (PEIs) indicating whether a UE has a paging message for each PO, allowing the UE to determine which POs to monitor or skip based on received PEI parameters, including system information about the number of POs, PEI periodicity, and PO offsets, thereby reducing unnecessary monitoring and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE monitors all paging occasions (POs) to ensure reliable paging message reception, then the reliability of paging is improved, but the power consumption increases
Solution Approach 1:
The base station transmits a paging early indication (PEI) before the actual paging occasion to preliminarily indicate whether a paging message will be transmitted. The UE receives this indication in advance and can determine whether to wake up and monitor the full PO or remain in sleep mode, thus avoiding unnecessary power consumption while ensuring reliable paging reception when needed.
Solution Approach 2:
The UE autonomously determines whether to monitor paging occasions based on the received PEI indication. When the PEI indicates no paging message, the UE self-manages its power consumption by skipping monitoring without requiring continuous network control, thereby reducing power usage while maintaining reliable communication.
2Reliability
If the UE monitors all paging occasions (POs) to ensure no paging messages are missed, then the completeness of paging reception is improved, but the signaling overhead increases
Solution Approach 1:
The paging early indication function is extracted from the traditional paging process. Instead of including paging information in every PO transmission, the indication of whether paging exists is separated and transmitted independently via PEI. This reduces signaling overhead by avoiding redundant transmissions while maintaining complete paging reception through the extracted indication mechanism.
3Reliability
If the UE monitors all paging occasions (POs) to ensure reliable paging reception, then the paging coverage is improved, but the power consumption increases
Solution Approach 1:
The base station transmits a paging early indication (PEI) before the actual paging occasion to preliminarily indicate whether a paging message will be transmitted. The UE receives this indication in advance and can determine whether to wake up and monitor the full PO or remain in sleep mode, thus avoiding unnecessary power consumption while ensuring reliable paging reception when needed.
Solution Approach 2:
The PEI mechanism applies different monitoring requirements to different UEs based on local conditions. UEs at the cell edge or with poor radio link quality receive indications to monitor POs for reliable coverage, while UEs with good signal quality can skip monitoring when PEI indicates no paging, optimizing power consumption locally for each UE based on its specific situation.
Data Source
AI summary
A base station may transmit a paging early indication (PEI) indicating whether the user equipment (UE) has a paging message for reception associated with each paging occasion (PO) of a set of POs including a plurality of POs, and transmit paging messages associated with the POs of the set of POs based on the PEI transmitted for the UE. The base station may transmit system information including PEI parameters. The UE may receive the PEI parameters and receive the PEI indicating whether the UE has a paging message for reception associated with each PO of a set of POs based on the PEI parameters, determining whether to monitor the POs of the set of POs based on the received PEI, and monitor or skipping monitoring the POs of the set of POs based on the determination of whether to monitor each PO of the set of POs.