RRC Resumption Message for PDU Session Resource Release
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in resource release during PDU session deactivation, particularly in RRC inactive states, leading to unnecessary UE paging and resource management complexities.
Innovation Solution
A method where a UE in an RRC inactive state transmits an RRC message for resumption to a base station, allowing for resource release based on PDU session deactivation, independent of network commands, thereby reducing unnecessary paging and optimizing resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the base station pages the UE to release resources during PDU session deactivation, then resource release can be achieved, but unnecessary paging occurs and system efficiency deteriorates
Solution Approach 1:
The base station performs preliminary actions by storing indication information during the PDU session deactivation process. When the UE enters the RRC inactive state, the base station can directly utilize this pre-stored information to determine whether resource release is needed, eliminating the need for subsequent paging operations and achieving resource release without unnecessary paging overhead.
2Adaptability or versatility
If the UE maintains resources in RRC inactive state, then resource availability is improved, but resource management complexity increases
Solution Approach 1:
The patent introduces an intermediary mechanism where the base station stores indication information that serves as a mediator between the PDU session state and the RRC state. This intermediary information allows the system to determine resource release requirements without complex real-time coordination, simplifying resource management while maintaining adaptability.
3Productivity
If the base station releases resources immediately upon PDU session deactivation, then resource management efficiency is improved, but resource release reliability deteriorates due to state synchronization issues
Solution Approach 1:
The base station performs preliminary action by storing indication information at the time of PDU session deactivation. This pre-stored information captures the resource release requirement before the UE transitions to RRC inactive state, ensuring that when the UE returns, the base station can reliably determine whether resource release is needed based on this pre-captured state information, thus maintaining both efficiency and reliability.
Data Source
AI summary
An embodiment of the present disclosure provides a method for transmitting or receiving a signal relating to a PDU session of a UE in a wireless communication system, the method includes the steps of: transmitting, by a UE in a RRC inactive state, a RRC message for resuming to a base station; and receiving, by the UE, information indicating release of a resource from the base station in response to the RRC message for resuming, wherein the release of the resource is caused by the deactivation of a PDU session of the UE.