PWS Paging DRX Configuration for UE Power and Alert Reliability
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Solution Overview
Problem
User Equipment (UE) faces challenges in balancing power consumption and timely reception of critical Public Warning System (PWS) signals due to the inefficiencies in the current discontinuous reception (DRX) cycles, which can lead to excessive power usage or missed alerts.
Innovation Solution
The UE and network device communicate to negotiate a DRX cycle value based on the UE's capability and preference for PWS signal reception, allowing for optimized power savings while ensuring timely alert delivery through sequence number or index-based decision-making.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE uses a short DRX cycle periodicity to monitor paging frequently, then the chance of receiving life-critical PWS signals increases, but the UE power consumption increases unnecessarily
Solution Approach 1:
The patent applies dynamics by making the DRX cycle configurable and adaptable. The network can dynamically adjust the DRX cycle length based on UE capabilities and service requirements, allowing the system to transition between short cycles (for reliable PWS reception) and long cycles (for power saving) as conditions change, rather than using a fixed periodicity
Solution Approach 2:
The patent changes the parameter of DRX cycle periodicity from a fixed value to a configurable parameter. By allowing the network to specify different DRX cycle lengths based on UE capability indications, the system can optimize between power consumption and PWS reception reliability by selecting appropriate parameter values for different scenarios
2Use of energy by moving object
If the UE uses a long DRX cycle periodicity to monitor paging less frequently, then the UE power consumption decreases, but the UE may miss paging signals including life-critical PWS signals
Solution Approach 1:
The system uses dynamics by allowing the DRX cycle to be adjusted based on UE capability indications. When UEs indicate their PWS reception capability, the network can dynamically configure appropriate DRX cycles that ensure reliable PWS delivery while maximizing power savings, adapting the monitoring frequency to actual needs rather than using a one-size-fits-all approach
Solution Approach 2:
The patent changes the DRX cycle parameter from a fixed long periodicity to a configurable value. By allowing the network to set appropriate DRX cycle lengths based on UE capabilities, the system can optimize the balance between power consumption and PWS reception reliability, ensuring that UEs use the minimum necessary monitoring frequency to receive critical alerts
3Ease of operation
If the UE monitors paging every DRX cycle, then the UE receives system information updates and calls, but the UE cannot optimize power savings without risking missed alerts
Solution Approach 1:
The patent applies preliminary action by having UEs indicate their PWS reception capabilities and preferences before the network configures the DRX cycle. This advance information allows the network to pre-configure optimal DRX parameters that balance power savings with PWS delivery assurance, rather than using conservative default settings that prevent power optimization
Solution Approach 2:
The system uses feedback by having UEs provide capability indications to the network. This feedback loop enables the network to understand UE-specific requirements and configure appropriate DRX cycles, allowing power management optimization while maintaining PWS delivery assurance based on actual UE capabilities rather than worst-case assumptions
Data Source
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AI summary
Aspects of the disclosure relate to a UE and a network device for wireless communication. The UE sends an indication to a network device indicating a capability of receiving a PWS signal and/or a delay requirement for receiving the PWS signal. The UE receives, from the network device, a configured DRX cycle value associated with the indication and a paging signal corresponding to the PWS signal associated with the configured DRX cycle value. The network device determines whether the UE is capable of receiving the PWS signal and whether the UE desires to receive the PWS signal within a duration. The network device configures a DRX cycle value based on the determination and sends, to the UE, the configured DRX cycle value and a paging signal corresponding to the PWS signal based on the configured DRX cycle value. Other aspects, features, and embodiments are also claimed and described.