Paging Inactivity Timer for UE Power Optimization in NR-U
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Solution Overview
Problem
Increasing the number of paging occasions per discontinuous repetition cycle in wireless communications leads to higher power consumption in user equipment (UE) and can result in puncturing of downlink control information signals due to Listen Before Talk (LBT) failures.
Innovation Solution
Implementing a paging inactivity timer and coordinated determination of which paging occasions to skip or discontinue monitoring, allowing the UE to improve power consumption while maintaining low latency in NR-U networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the number of paging occasions per discontinuous repetition cycle is increased, then paging delivery timeliness is improved, but UE power consumption increases
Solution Approach 1:
The patent implements dynamic paging occasion monitoring where the UE adaptively adjusts its monitoring behavior based on received indicators. The network dynamically signals which paging occasions should be monitored or skipped, allowing the system to optimize between latency and power consumption in real-time rather than using a fixed monitoring pattern.
Solution Approach 2:
The patent changes the monitoring parameter (which paging occasions to monitor) based on network conditions and UE state. By receiving indicators that specify monitoring behavior for different paging occasions, the system dynamically adjusts the monitoring parameters to achieve low latency when needed while reducing power consumption during normal operation.
2Loss of time
If the UE monitors multiple paging occasions within a DRX cycle, then paging delivery timeliness is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary indicator mechanism where the network provides explicit guidance to the UE about which paging occasions to monitor. This intermediary signaling layer simplifies the UE's decision-making process by replacing complex coordination logic with straightforward indicator-based instructions from the network.
3Reliability
If LBT is performed on multiple BWP sub-bands, then signal reception reliability is improved, but signal puncturing increases due to LBT failures
Solution Approach 1:
The patent segments the bandwidth into multiple sub-bands and performs LBT independently on each segment. This segmentation allows the system to receive signals on multiple frequency segments simultaneously, improving overall reception reliability while isolating LBT failures to specific sub-bands rather than affecting the entire bandwidth.
Solution Approach 2:
The patent applies different monitoring and reception strategies to different sub-bands based on their individual LBT outcomes. Each sub-band can be independently managed, with the UE adapting its reception quality and monitoring behavior locally according to the specific conditions of each frequency segment.
Data Source
AI summary
Some aspects of this disclosure include apparatuses and methods for implementing mechanisms for downlink control information between an electronic device (for example, a UE) and a network for cell detection and measurement. For example, some aspects relate to an electronic device including a transceiver and a processor communicatively coupled to the transceiver. The processor monitors one or more paging occasions within a discontinuous repetition cycle (DRX) and can make a determination of one or more paging occasions within the DRX to not monitor. Each paging occasion may include a transmission by the network of downlink control information for one or more paging messages.