Dynamic Access Network Selection for Mobile Wi-Fi Steering

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Solution Overview

Problem

Current network selection tools, such as ANDSF, lack dynamic mechanisms to efficiently manage user equipment movement between mobile and Wi-Fi networks, leading to static and inefficient network usage, especially in congested conditions or when quality of service requirements are not met.

Innovation Solution

A method and apparatus that provide access network selection information to user equipment, incorporating priority information and network access policies, allowing for dynamic selection between cellular and local wireless networks based on current priorities and conditions, such as congestion or quality of service, using message protocols associated with cellular networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If static network selection tools (ANDSF) are used, then network selection is simple to implement, but network usage becomes inefficient under congested conditions or when quality of service requirements are not met

Engineering Contradiction:
Improvenetwork usage efficiencyVSAvoidnetwork selection mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements dynamic network selection by enabling user equipment to autonomously evaluate multiple access networks (cellular and Wi-Fi) based on real-time conditions such as network congestion, quality of service requirements, and current usage state. This allows the system to adapt network selection decisions dynamically rather than relying on static pre-configured rules, thereby improving network usage efficiency without requiring complex centralized control mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The user equipment is empowered with self-service capabilities to independently perform network selection and switching between cellular and Wi-Fi networks. The device autonomously evaluates available networks, determines the most suitable network based on its current state and requirements, and executes switching decisions without continuous external intervention, thus improving efficiency while maintaining implementation simplicity.

Inventive Principle:
Principle #25Self-service

2Reliability

If dynamic network selection is implemented, then network performance is optimized, but the complexity of network selection mechanisms increases

Engineering Contradiction:
Improvenetwork performance reliabilityVSAvoidaccess network selection complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system achieves optimized network performance through dynamic evaluation of multiple access networks based on real-time conditions including congestion levels, quality of service requirements, and user equipment state. The network selection mechanism adapts continuously to changing network conditions, ensuring reliable performance while maintaining manageable complexity through standardized evaluation criteria and decision-making processes.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If autonomous network switching is enabled, then user experience is improved, but control over network selection is reduced

Engineering Contradiction:
Improveuser experienceVSAvoidnetwork selection control
Core Design Contradiction:
Ease of operationVSExtent of automation

Solution Approach 1:

The user equipment is equipped with autonomous network selection capabilities that enable it to independently evaluate available networks, determine the most suitable network based on current conditions and user requirements, and execute switching decisions without manual intervention. This self-service approach improves user experience by ensuring continuous optimal connectivity while maintaining appropriate levels of automation through standardized evaluation frameworks that balance autonomy with controllable decision-making.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP2907345B1Method and apparatus for access network selection
Publication Date: 2019.04.17 NOKIA SOLUTIONS & NETWORKS OY
  • EP2907345B1 patent drawingFigure 1
  • EP2907345B1 patent drawingFigure 2
  • EP2907345B1 patent drawingFigure 3~4

AI summary

A method includes using a set of information for a plurality of different access networks, said plurality of networks including at least one cellular network and at least one local wireless network and a current priority associated with a user equipment to provide access network selection information to said user equipment for one or more of said a plurality of said network and causing said access network selection information to be provided to said user equipment. The set of information may include a set of priority information and/or a set of network access information.