Paging Subgrouping for 5G UE Power Reduction
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Solution Overview
Problem
Current 5G NR power saving techniques are inadequate for reducing unnecessary UE paging receptions, leading to increased power consumption and performance degradation, particularly in idle/inactive-mode and connected-mode scenarios, especially with multiple SIM devices and varying UE types.
Innovation Solution
Implementing a paging subgrouping mechanism where UEs provide assistance information to communication nodes, allowing for the determination and assignment of UEs to specific paging subgroups based on parameters like UE type, capability, and network load, thereby reducing unnecessary paging and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional paging mechanisms are used without subgrouping, then the paging procedure is simple, but unnecessary paging receptions increase leading to higher power consumption
Solution Approach 1:
The patent divides UEs into multiple paging subgroups based on their characteristics (e.g., paging probability, UE type, capability). Each subgroup is assigned a specific paging occasion, allowing UEs to wake up only for their designated time slots. This segmentation reduces unnecessary paging receptions and lowers power consumption while maintaining manageable system complexity through automated grouping mechanisms.
2Loss of energy
If paging subgrouping is implemented, then unnecessary paging is reduced and power consumption decreases, but the complexity of determining and assigning subgroups increases
Solution Approach 1:
The patent employs self-service mechanisms where UEs provide assistance information about their own characteristics (paging probability, UE type, capability) to the network. The network then automatically determines subgroup assignments based on this information without requiring complex manual configuration. This self-service approach reduces the operational complexity of subgroup management while achieving significant power savings.
3Use of energy by moving object
If assistance information is collected and used for subgroup assignment, then power saving performance is optimized, but information processing requirements increase
Solution Approach 1:
The patent utilizes specific UE parameters (paging probability, UE type, capability) as inputs for subgroup assignment. By changing the way these parameters are processed and weighted in the assignment algorithm, the system achieves optimized power saving performance. The network adjusts parameter importance and processing methods based on current network conditions, balancing power saving benefits with information processing requirements.
Data Source
AI summary
This disclosure presents apparatuses and methods to determine, assign, and communicate paging subgroups using assistance information. In some aspects, assistance information can include user equipment (UE) parameters, for example, UE capability parameters, UE type parameters, ID preference parameters, location parameters, or mobility parameters. In some aspects, assistance information can include network parameters, cell parameters, or information about a subset or all UEs registered on the network. The radio access network (RAN) or core network (CN) can utilize the assistance information to determine the number of paging subgroups and to assign one or more subsets of UEs to each paging subgroup. The RAN or CN can communicate the paging subgroups to one or more of the UEs within the network. In some aspects, the paging subgroup can be directly indicated to the UE. In some aspects, the paging subgroup can be derived by the UE using the received paging subgroup information.