5G Network Apparatus Handling Service Request Collisions

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Solution Overview

Problem

In 5G mobile communication systems, the existing procedures for handling Service Request (SR) in Multi-USIM UE scenarios often result in collisions between SR procedures and other network-initiated procedures, leading to delays and potential service disruptions, especially when transitioning between SIMs.

Innovation Solution

The proposed solution involves initiating a generic UE configuration update (UCU) procedure in the network and allowing the UE to abort or proceed with the UCU procedure based on the presence of a specific request type in the SR message, ensuring that SR procedures with a request for NAS signaling connection release take precedence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the network apparatus initiates a UE Configuration Update (UCU) procedure, then network configuration can be updated, but collisions with Service Request (SR) procedures may occur causing delays

Engineering Contradiction:

Improveconfiguration update efficiencyVSAvoidprocedure collision delay

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The network apparatus includes a collision detection mechanism that checks whether an SR procedure is already initiated before starting the UCU procedure. This preliminary check prevents collisions by avoiding the initiation of UCU when SR is ongoing, thus eliminating delays caused by procedure conflicts.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If the UE processes both UCU and SR procedures simultaneously, then both procedures can be completed, but procedure collision and service disruption may occur

Engineering Contradiction:

Improveprocedure processing throughputVSAvoidservice continuity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The UE implements a pre-check mechanism that detects ongoing SR procedures before initiating or processing UCU procedures. When collision is detected, the UE prioritizes SR completion and delays UCU execution, preventing service disruptions while maintaining overall system productivity through coordinated procedure management.

Inventive Principle:

Principle #9Preliminary anti-action

Data Source

PatentUS12279337B2Method, UE and network apparatus to handle service request procedure in wireless network

Publication Date: 2025.04.15 SAMSUNG ELECTRONICS CO LTD

AI summary

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate.A method for handling Service Request (SR) procedure in a wireless network by a network apparatus is provided. The method includes initiating a User Equipment Configuration Update (UCU) procedure. Further, the method includes receiving a SR message from a Multi SIM (MUSIM) UE before completion of the UCU procedure. Further, the method includes determining whether the SR message comprises a User Equipment (UE) request type Information Element (IE) set to “Non-Access Stratum (NAS) signaling connection release”. In an embodiment, the method includes aborting the UCU procedure and processing the SR procedure in response to determining that the service request message comprises the UE request type IE set to “NAS signaling connection release”. In another embodiment, the method includes processing both the UCU procedure and the SR procedure in response to determining that the SR message does not comprises the UE request type IE set to “NAS signaling connection release”.