Non-3GPP Access Paging Response for 5G Registration Continuity
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Solution Overview
Problem
Existing methods and systems lack effective mechanisms for handling non-3GPP access registration and session management when a user equipment's periodic timer expires in Out Of Service state in a 3GPP access, leading to unavailable handling mechanisms in 5G networks.
Innovation Solution
A method and system for handling registration and session management in wireless communication systems, involving UE registration procedures over both 3GPP and non-3GPP access networks, including context transfer and reinitiation of registration processes when timer expiration occurs, and managing context deletion scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE triggers periodic registration to a second core network entity over 3GPP access when periodic timer expires in OOS state, then the UE can maintain registration status, but the existing methods and systems lack available handling mechanisms for non-3GPP access in 5G network
Solution Approach 1:
The patent applies universality by enabling the core network entity to handle both 3GPP and non-3GPP access registrations through a unified mechanism. The AMF is configured to receive registration requests from both access types and manage UE contexts across multiple access networks, making the system adaptable to diverse access scenarios without requiring separate handling procedures for each access type.
Solution Approach 2:
The patent introduces an intermediary mechanism where the core network entity (AMF) acts as a mediator between the UE and both 3GPP and non-3GPP access networks. The AMF receives context information from both access types and coordinates registration procedures, serving as an intermediary that enables seamless handling of multi-access registrations and resolves the lack of available mechanisms for non-3GPP access.
2Adaptability or versatility
If the core network entity receives context from both 3GPP access and non-3GPP access, then comprehensive network management is achieved, but the system complexity increases
Solution Approach 1:
The patent applies merging by combining the handling of 3GPP and non-3GPP access registrations into a single core network entity (AMF). Instead of having separate entities for each access type, the AMF is configured to receive and manage contexts from both access types simultaneously, reducing the number of network entities and simplifying the overall system architecture while maintaining comprehensive multi-access management capability.
3Reliability
If the UE reinitiates registration procedure for non-3GPP access, then network connectivity is maintained, but additional signaling overhead and time consumption occur
Solution Approach 1:
The patent applies preliminary action by having the core network entity proactively manage the UE context and registration state across both 3GPP and non-3GPP accesses before the UE actually switches or reinitiates registration. The AMF pre-configures the handling mechanisms and maintains context information ready, so when the UE needs to reinitiate registration, the process is expedited because the network is already prepared to receive and process the registration request efficiently.
Data Source
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AI summary
The present disclosure concerns a method performed by a user equipment, UE, in a wireless communication system, the method comprising: receiving, from an access management function, AMF, entity, a paging message associated with a non-3rd Generation Partnership Project, 3GPP, access; identifying a connection management, CM, state of the non-3GPP access; and determining whether to respond to the paging message, based on the identified CM state of the non-3GPP access.