Network Initiated Mobility for Stand-Alone Non-Public Networks

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Solution Overview

Problem

Current communication networks lack efficient methods for network-initiated mobility in stand-alone non-public networks (SNPNs), where user equipment (UE) mobility between different networks is not seamlessly managed, leading to service disruptions and inefficient resource allocation.

Innovation Solution

The implementation of a method where a user equipment (UE) receives messages from its home service provider to initiate a network switch to a target network, selecting and accessing it based on provided information, including network measurement reports and policy configurations, allowing for network-initiated mobility between different networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If UE autonomously selects networks based on local measurements, then mobility decision speed is improved, but network optimization capability deteriorates

Engineering Contradiction:

Improvemobility decision speedVSAvoidnetwork optimization capability

Core Design Contradiction:

SpeedVSAdaptability or versatility

Solution Approach 1:

The mobility management function is segmented between UE (local measurement and initial selection) and network (final decision and optimization). The network provides measurement configuration and receives reports, while the UE performs local assessments. This division allows fast local response while maintaining network-level optimization capability through coordinated interaction.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Measurement reports act as an intermediary mechanism between UE local decisions and network optimization. The UE sends measurement information to the network, which uses this data to make informed mobility decisions, bridging the gap between autonomous UE behavior and network-controlled optimization.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If network controls all mobility decisions, then network optimization capability is improved, but signaling overhead increases

Engineering Contradiction:

Improvenetwork optimization capabilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The network performs partial mobility control by providing measurement configuration and receiving reports, rather than controlling every aspect of mobility. This partial involvement maintains optimization capability while reducing signaling overhead compared to full network control.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The UE performs self-service by autonomously measuring networks and preparing mobility decisions based on local conditions. This self-service capability reduces the need for constant network signaling while maintaining network optimization through report-based feedback.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If UE performs measurements on all candidate networks, then mobility selection accuracy is improved, but energy consumption increases

Engineering Contradiction:

Improvemobility selection accuracyVSAvoidenergy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The measurement process applies local quality by focusing measurements on specific candidate networks identified as potentially suitable, rather than uniformly measuring all networks. This targeted approach maintains selection accuracy for relevant networks while reducing energy waste on unlikely candidates.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The UE performs partial measurements on a subset of candidate networks rather than exhaustive measurements of all possible networks. This partial action maintains sufficient mobility selection accuracy while significantly reducing energy consumption.

Inventive Principle:

Principle #16Partial or excessive action

4Loss of time

If network switch is initiated without UE measurement reports, then network response time is improved, but mobility reliability deteriorates

Engineering Contradiction:

Improvenetwork response timeVSAvoidmobility reliability

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The network sends measurement configuration in advance, preparing the UE for measurements before the mobility decision is needed. This preliminary action enables the network to receive timely measurement reports without waiting for UE-initiated measurements, improving response time while maintaining reliability through pre-planned measurement collection.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20230128225A1Methods and Apparatus for Network Initiated Mobility In Networks

Publication Date: 2023.04.27 HUAWEI TECH CO LTD

AI summary

A method for implemented by a user equipment (UE) receiving, by the UE from a home service provider (SP) of the UE, a first message including information associated with one or more target networks, the first message initiating a network switch changing a serving network of the UE from a current network to one target network of the one or more target networks; selecting, by the UE, the one target network of the one or more target networks; and accessing, by the UE, the one target network.