Paging Early Indication for Wireless UE Power Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently indicating paging occasions to user equipment (UE) due to the lack of effective methods for aligning paging early indications (PEIs) with synchronization signal blocks (SSBs), leading to unnecessary power consumption and processing resources being used for incorrect PO detection.
Innovation Solution
The implementation of a method where a UE receives a PEI associated with an SSB transmission, determining if the PEI indicates a paging occasion based on a time difference threshold between the SSB start and the start of monitoring occasions or paging frames, allowing for efficient processing of physical downlink control channel (PDCCH) communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE monitors all paging occasions without early indication, then the UE can detect all possible paging messages, but the UE consumes unnecessary power and processing resources for incorrect PO detection
Solution Approach 1:
The network transmits a paging early indication (PEI) before the actual paging occasion to preliminarily indicate whether a PO will occur. The UE receives and processes this early indication, and only activates full paging monitoring when the PEI confirms a PO is scheduled, thereby avoiding unnecessary power consumption while maintaining reliable detection
Solution Approach 2:
A paging early indication message serves as an intermediary between the network's paging scheduling decision and the UE's paging monitoring action. This intermediate signal allows the UE to make informed decisions about whether to activate paging reception, resolving the contradiction between accurate detection and power savings
2Reliability
If a UE monitors all paging occasions without early indication, then the UE ensures no paging messages are missed, but processing resources are wasted on incorrect PO detection
Solution Approach 1:
The network transmits a paging early indication (PEI) before the actual paging occasion to preliminarily indicate whether a PO will occur. The UE receives and processes this early indication, and only activates full paging monitoring when the PEI confirms a PO is scheduled, thereby avoiding unnecessary power consumption while maintaining reliable detection
Solution Approach 2:
Instead of requiring full paging monitoring for all possible occasions, the system uses partial action by only activating complete PO monitoring when the PEI indicates a PO is actually scheduled. This partial monitoring approach maintains detection reliability while significantly improving processing efficiency
3Ease of operation
If PEI is transmitted without alignment to SSB, then the PEI can be sent independently, but the UE cannot accurately determine which PO applies to it
Solution Approach 1:
The patent combines the PEI transmission with SSB transmissions by associating each PEI with a specific SSB. The network transmits multiple PEIs in association with multiple SSBs, and the UE determines the applicable PO by identifying the SSB with which the PEI is associated. This merging maintains transmission independence while achieving accurate PO indication through the SSB-PEI association mechanism
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a paging early indication that indicates one or more paging occasions (POs) in a quantity of paging frames based at least in part on a maximum quantity of paging frames. The UE may process a physical downlink control channel communication received in a PO of the one or more POs. Numerous other aspects are described.