UE Paging Subgrouping for 5G Power Management
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Solution Overview
Problem
Current 5G wireless communication systems face challenges in efficiently managing UE power consumption during RRC_IDLE/RRC_INACTIVE states due to the lack of effective paging procedures, leading to increased power usage and reduced battery life, especially with the growing number of connected devices and diverse service requirements.
Innovation Solution
The implementation of a method and apparatus for a paging procedure that utilizes UE identity-based paging grouping or subgrouping, allowing UEs to monitor specific paging occasions and receive early paging indications, thereby reducing unnecessary power consumption by only activating necessary monitoring occasions based on configured parameters and UE identities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs monitor all paging occasions in RRC_IDLE/RRC_INACTIVE states, then paging reliability is improved, but power consumption increases
Solution Approach 1:
The patent divides UEs into different paging groups and subgroups based on their UE identities. Each UE is assigned to monitor only specific paging occasions corresponding to its group and subgroup, rather than monitoring all paging occasions. This segmentation reduces the number of monitoring occasions per UE while ensuring reliable delivery within each segment, thus resolving the contradiction between paging reliability and power consumption.
2Quantity of substance
If the number of connected devices increases, then network capacity is improved, but paging overhead and complexity increase
Solution Approach 1:
The patent implements a hierarchical paging structure where UEs are divided into multiple groups and subgroups. This segmentation allows the network to scale to support a large number of connected devices by distributing paging load across multiple groups and subgroups, rather than handling all devices in a single paging structure, thus managing complexity while increasing capacity.
Solution Approach 2:
The patent introduces an additional dimension to paging organization by creating both paging groups and paging subgroups (a two-level hierarchy). This dimensional expansion allows more efficient organization and management of large numbers of UEs, distributing the paging overhead across multiple dimensions rather than a single flat structure.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method may include: receiving, from a base station, paging early indication (PEI) configuration information including a parameter indicating a number of UE identity (ID) based paging subgroups; determining a paging subgroup ID corresponding to the UE, based on a maximum value of the parameter; monitoring PEI information on a PEI occasion, based on the PEI configuration information; and in case that the PEI information indicates the paging subgroup ID, monitoring paging downlink control information (DCI) on a paging occasion (PO).