Paging Subgroup Configuration for Wireless UE Power Management
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Solution Overview
Problem
Current paging technologies in wireless communications fail to effectively account for different PDU sessions and capabilities of user equipment (UE) when transitioning between inactive and connected states, leading to missed paging requests due to inadequate support for paging subgrouping.
Innovation Solution
A method where the core network configures and manages paging subgroups for UE, determining whether a cell supports paging subgrouping and adjusting monitoring and paging procedures accordingly, using system information blocks and RRC messages to indicate support for enhanced paging techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If paging subgrouping is implemented to save power at the UE, then power consumption is reduced, but the complexity of the paging system increases due to the need to manage multiple subgroups and configurations
Solution Approach 1:
The patent divides the paging group into multiple subgroups (first paging subgroup and second paging subgroup) with different paging techniques. Each subgroup can be configured independently with different parameters such as paging occasion, DRX cycle, and monitoring frequency. This segmentation allows the network to target specific subgroups for paging based on UE capabilities and requirements, thereby reducing overall power consumption while managing complexity through structured organization.
Solution Approach 2:
The patent introduces dynamic configuration of paging subgroups where the network can adjust paging parameters based on real-time conditions. The UE can be dynamically assigned to different subgroups or have their paging configuration modified based on factors such as mobility state, data activity, and network load. This dynamic approach optimizes power consumption by adapting paging behavior to current needs while the system manages complexity through standardized dynamic management procedures.
2Reliability
If the UE monitors paging using enhanced techniques for cells supporting paging subgrouping, then paging reliability is improved, but the UE must determine cell capability support which adds operational complexity
Solution Approach 1:
The patent implements preliminary action by having the network indicate paging subgrouping support in advance through system information blocks (SIBs) or other downlink communications before the UE needs to monitor paging. The UE receives configuration information about available subgroups and their characteristics beforehand, allowing it to prepare appropriate monitoring strategies without complex real-time capability determination. This pre-provisioning maintains high paging reliability while simplifying UE operation.
Solution Approach 2:
The patent employs feedback mechanisms where the UE reports its paging preferences and capabilities to the network, and the network adjusts paging configurations accordingly. The UE can indicate whether it supports enhanced paging techniques, and the network provides feedback through configuration messages that guide the UE's paging monitoring behavior. This feedback loop ensures reliable paging delivery adapted to UE capabilities while maintaining operational simplicity through automated configuration.
3Loss of energy
If the base station uses paging subgrouping to page the UE, then power saving for the UE is achieved, but the base station must determine whether to use enhanced paging techniques based on cell capabilities
Solution Approach 1:
The patent implements universality by designing a multi-functional paging system where the base station can flexibly switch between different paging techniques (enhanced paging with subgroups and legacy paging) based on cell capabilities and conditions. The same base station infrastructure supports both paging modes, allowing it to serve multiple purposes: enabling power saving for UEs in cells that support enhanced paging while falling back to traditional paging where necessary. This multi-functionality achieves UE power saving without requiring complex base station logic, as the capability determination is standardized and configurable.
Data Source
AI summary
A radio access network (RAN), a core network (CN), and a user equipment (UE) can implement a method for managing paging subgrouping for the UE when the UE operates in an inactive or idle state. The method includes: transmitting and/or receiving a configuration for a paging subgroup, determining whether to use the configuration in paging and monitoring procedures, and monitoring or paging the UE in accordance with the determination. The method may further include transitioning between base stations for the UE and pausing any monitoring using the configuration for the paging subgroup during an emergency PDU session.