Adaptive PEI Monitoring for Paging Power Savings
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Solution Overview
Problem
Existing wireless communication networks face inefficiencies in power consumption due to inefficient monitoring of paging early indications (PEI), particularly when intervals between PEI and synchronization signal blocks (SSB) and paging occasions are not optimally managed, leading to increased power usage and reduced power savings.
Innovation Solution
Adaptive PEI techniques that enable UEs to adjust PEI monitoring based on network configuration factors such as power values, SSB reselection, and paging rates, allowing the UE to disable or enable PEI monitoring and skip pre-syncing to optimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PEI monitoring is continuously enabled, then paging detection reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic PEI monitoring where the UE adapts its monitoring behavior based on real-time conditions. The UE determines whether to monitor PEI by evaluating factors such as whether a paging occasion occurs within a threshold time after an SSB, and whether the UE is in a connected or idle state. This dynamic adaptation allows the system to maintain reliable paging detection when necessary while reducing power consumption during periods when paging is less critical.
Solution Approach 2:
The patent changes the monitoring parameter (PEI monitoring enable/disable state) based on varying conditions. Specifically, the UE adjusts its PEI monitoring behavior by changing parameters such as the time threshold for paging occasion proximity to SSB, and the monitoring state itself (enabled/disabled). These parameter changes allow the system to optimize between reliability and power consumption based on current network conditions and UE state.
2Use of energy by moving object
If PEI monitoring is disabled to save power, then power consumption is reduced, but paging detection reliability deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms where the UE continuously evaluates network conditions and adjusts PEI monitoring accordingly. The UE receives information about paging occasions, SSB timing, and its own connection state, then uses this feedback to determine whether enabling or disabling PEI monitoring is appropriate. This feedback loop ensures that power is saved only when paging detection reliability can be maintained through alternative means or when the risk of missed paging is acceptable.
Solution Approach 2:
The system dynamically switches between enabled and disabled PEI monitoring states based on real-time condition evaluation. Rather than a static configuration, the UE actively adjusts its monitoring state in response to changing conditions such as proximity of paging occasions to SSB, network signaling about paging activity, and UE connection state. This dynamic behavior resolves the contradiction by adapting to conditions that favor either power saving or reliability.
3Measurement precision
If pre-syncing is performed before every PEI, then timing synchronization accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies partial pre-syncing action rather than performing full pre-syncing before every PEI. The UE performs pre-syncing selectively based on conditions such as whether sufficient time has passed since the last SSB, and whether the current timing offset exceeds a threshold. This partial action approach maintains adequate timing synchronization accuracy only when necessary, rather than continuously, thereby reducing power consumption while preserving sufficient synchronization for reliable paging detection.
4Reliability
If PEI monitoring is enabled with frequent paging occasions, then paging detection capability is improved, but power consumption increases due to increased active states
Solution Approach 1:
The patent implements dynamic PEI monitoring that adapts to paging rates and network conditions. When paging occasions are frequent, the UE evaluates whether continuous PEI monitoring is truly necessary by considering factors such as whether the UE is in connected or idle state, and whether recent paging activity suggests ongoing paging needs. This dynamic adjustment allows the system to maintain paging detection capability for frequent paging occasions while avoiding unnecessary active states when the network indicates reduced paging activity.
Data Source
AI summary
The techniques described herein can include solutions for adaptive paging early indication (PEI). For example, a user equipment (UE) can determine whether to enable or disable monitoring of PEI occasions. In some examples, the UE can enable or disable monitoring of PEI occasions based on intervals between SSBs, PEI occasions, and paging occasions. In some examples, the UE can initiate determination of enabling or disabling monitoring of PEI in response to receiving communications or reselecting an SSB. In some examples, the UE can enable or disable monitoring of PEI occasions based on the frequency of paging occasions and paging occasions thresholds. In some examples, the UE can refrain from decoding pre-sync SSBs prior to PEI occasions, paging occasions, or both.