5G UE Timer Control for NAS Registration and Local Release
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Solution Overview
Problem
Inefficient signaling and connection management in non-access stratum (NAS) of wireless communication networks lead to delays and resource wastage due to unaddressed conditions such as transmission failures, tracking area changes, and network slice subscription changes, resulting in prolonged connected states and delayed procedures.
Innovation Solution
User equipment (UE) implements a connection release timer that is stopped under specific conditions like transmission failures, tracking area changes, or network slice subscription changes, and performs local release of signaling connections to optimize registration and tracking area update procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connection release timer is started after receiving a registration accept message, then the UE can wait for connection release, but the UE cannot initiate subsequent registration procedures until the timer expires, causing delays
Solution Approach 1:
The patent applies dynamics by making the connection release timer stoppable based on changing conditions. The timer automatically stops when specific events occur (transmission failure, tracking area change, network slice subscription change), allowing the system to adapt its timing behavior dynamically rather than following a fixed countdown, thus resolving the contradiction between reliable connection management and timely procedure initiation
Solution Approach 2:
The patent implements feedback mechanisms where the UE monitors specific conditions (transmission failures, tracking area changes, network slice updates) and uses this feedback to control the timer state. When these conditions are detected, the timer stops, providing a feedback loop that allows the system to respond to actual network state changes rather than waiting for arbitrary timer expiration, thereby reducing unnecessary delays
2Reliability
If the UE waits for timer expiration before initiating registration, then connection release is managed properly, but resource utilization is reduced due to prolonged connected states
Solution Approach 1:
The system dynamically adjusts connection state based on actual needs by stopping the timer when specific conditions occur. This prevents the UE from remaining in prolonged connected states waiting for timer expiration, thereby reducing energy consumption and resource wastage while still maintaining proper connection release management through the conditional timer stop mechanism
Solution Approach 2:
The UE autonomously manages its own connection state by monitoring conditions and controlling the timer without external intervention. When conditions like transmission failure or tracking area change are detected, the UE automatically stops the timer and initiates appropriate procedures, eliminating the need for continuous network coordination and reducing resource consumption associated with prolonged connections
3Stability of the object's composition
If the registration procedure continues until timer expiration, then connection stability is maintained, but service recovery is delayed when transmission failures occur
Solution Approach 1:
The patent implements feedback-based timer control where the UE monitors transmission status and other conditions. When transmission failure or other disruptive conditions are detected, the timer stops immediately, allowing the system to detect and respond to service recovery needs without being constrained by the original timer expiration schedule, thus reducing service recovery delay while maintaining connection stability through conditional timer management
Data Source
AI summary
A method is provided for completing a registration procedure in a fifth generation (5G) network, comprising transmitting, by a user equipment (UE), a registration request message to the 5G network, the registration request message initiating a first registration procedure, starting, by the UE, a connection release timer in response to occurrence of a plurality of events; meeting, by the UE, at least one of a plurality of conditions; stopping, by the UE, the connection release timer in response to the meeting the at least one of the plurality of conditions; and performing, by the UE, a local release of a signaling connection in response to the meeting the at least one of the plurality of conditions if the UE is in a connected state.