MA PDU Session Management via SIP Registration and PS Data Off Status
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 3GPP LTE systems lack efficient methods for supporting Multi-Access (MA) Packet Data Unit (PDU) sessions, particularly in terms of communication protocols and network node interactions, which hinders effective Packet Switch (PS) Data Off functionality.
Innovation Solution
The implementation of a method where a network node and User Equipment (UE) exchange Session Initiation Protocol (SIP) messages to manage MA PDU sessions, including transmitting SIP registration messages and PS Data Off status information, to facilitate efficient communication and service management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 3GPP PS Data Off is used for MA PDU session, then service availability is improved, but communication efficiency deteriorates due to lack of standardized methods
Solution Approach 1:
The patent changes the state of the system by introducing new parameters (SIP registration messages, PS Data Off status indicators, exception service information) to enable efficient MA PDU session management. This transforms the conventional PS Data Off approach into a standardized protocol-based solution that maintains service availability while improving communication efficiency through structured information exchange between network nodes and UEs.
Solution Approach 2:
The patent segments the communication process into distinct standardized steps: SIP registration message exchange, PS Data Off status indication, and exception service information transmission. This segmentation allows each function to be handled independently and efficiently, resolving the contradiction by providing structured methods for maintaining service availability while improving overall communication efficiency.
2Adaptability or versatility
If conventional PS Data Off method is used without standardization, then implementation flexibility is maintained, but system complexity increases due to ad-hoc solutions
Solution Approach 1:
The patent creates a universal standardized framework using SIP messages that can handle multiple functions: registration, PS Data Off status indication, and exception service information exchange. This multi-functional approach maintains implementation flexibility across different scenarios while reducing system complexity by providing a single standardized methodology instead of multiple ad-hoc solutions.
3Adaptability or versatility
If MA PDU session support is added to 3GPP LTE, then service versatility is improved, but protocol compatibility deteriorates due to lack of standardized interactions
Solution Approach 1:
The patent introduces SIP messages as an intermediary standardized protocol layer between existing 3GPP LTE infrastructure and new MA PDU session requirements. This intermediary approach enables service versatility by supporting advanced communication scenarios while maintaining protocol compatibility through standardized interaction methods that work with existing network nodes and UEs.
Data Source
AI summary
One disclosure of the present specification provides a method by which a network node performs communication related to an MA PDU session. The method may comprise the steps of: receiving, from a UE, a SIP registration message including MA PDU session information; receiving, from another network node, a SIP message related to an IMS service for the MA PDU session; and transmitting, to a PCF node, information on whether the SIP message is related to a PS Data Off exempt service, on the basis of the reception of the MA PDU session information.