5G NR De-registration State Machine Segmentation
Solution Overview
Problem
Current 5G New Radio (NR) networks face challenges in efficiently managing de-registration procedures across different access types, leading to potential collisions and ambiguities during state transitions and connection management.
Innovation Solution
The implementation of methods and information elements to manage state machines and de-registration requests across multiple access types, including the use of a de-registration accept type attribute to clarify which access type has been de-registered, and strategies for re-transmitting de-registration requests to avoid collisions and maintain connection integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If de-registration procedures are implemented across multiple access types in 5G NR networks, then network management capability is improved, but procedure collisions and ambiguities during state transitions occur
Solution Approach 1:
The patent segments the de-registration procedure by introducing separate state machines for different access types (3GPP and non-3GPP). Each access type maintains its own registration status and de-registration state, allowing independent management without interference. This segmentation resolves the collision problem by ensuring that de-registration operations on one access type do not ambiguously affect another access type.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of a unified de-registration state machine that coordinates between multiple access type-specific state machines. This intermediary ensures proper state transitions and prevents ambiguities by managing the interaction between different access types during de-registration procedures, maintaining reliability while supporting multi-access capability.
2Loss of information
If access type identification is added to de-registration messages, then procedure clarity is improved, but message complexity increases
Solution Approach 1:
The patent applies local quality by conditionally including the access type indicator in de-registration messages. The access type information is only added when necessary - specifically when the de-registration procedure needs to be differentiated across multiple access types. This selective approach maintains procedure clarity while minimizing message complexity by avoiding redundant information in single-access scenarios.
Data Source
AI summary
Apparatuses, systems, and methods for a wireless device to perform methods for de-registration of the wireless device from a first access type over a second access type. Methods also include procedures for maintaining state machines associated with both access types as well as procedures to determine a connection for re-transmitting a de-registration request and to avoid collisions between procedures associated with the first and second access types. Further, methods include an information element configured to indicate which access type has been de-registered.