Roaming Authentication via Mobility Server Intermediary

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Solution Overview

Problem

Enterprise mobile users face high costs and authentication issues when roaming, as existing solutions either incur high costs for roaming or require local SIM cards that may not be recognized by the enterprise system, complicating call routing and feature utilization.

Innovation Solution

A system that allows a mobile device to register and authenticate with a second telephone number on a foreign network using a mobility server, which verifies a personal identification code to associate the new number with the original number, enabling cost-effective call routing and feature access while roaming.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If a local SIM card is used in the new country, then call costs are reduced, but the SIM card number may not be recognized by the enterprise system and authentication becomes problematic

Engineering Contradiction:
Improvecall costsVSAvoidauthentication reliability
Core Design Contradiction:
Loss of energyVSReliability

Solution Approach 1:

The patent introduces a mobility server as an intermediary between the roaming device and the enterprise system. The mobility server receives authentication requests from devices using local SIM cards, verifies them against the enterprise user database, and facilitates call routing. This mediator enables low-cost local SIM usage while maintaining enterprise authentication standards and call routing capabilities.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If roaming with the same provider is used, then enterprise features and call routing are maintained, but call and data costs increase significantly

Engineering Contradiction:
Improveenterprise feature accessVSAvoidcall and data costs
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent segments the authentication and call routing functions from the network provider layer to the enterprise application layer. By separating these functions, the system allows users to connect to local networks for cost-effective communication while the enterprise mobility server handles authentication and feature delivery, enabling enterprise features to work over any network provider.

Inventive Principle:
Principle #1Segmentation

3Loss of energy

If a local SIM card is used, then call costs are reduced, but call routing through the enterprise server in the home country becomes inefficient

Engineering Contradiction:
Improvecall costsVSAvoidcall routing time
Core Design Contradiction:
Loss of energyVSLoss of time

Solution Approach 1:

The mobility server performs preliminary authentication and call routing setup before actual communication occurs. By pre-establishing the association between the local SIM card and the enterprise user account, and pre-configuring routing paths through the mobility server, the system reduces real-time routing delays while maintaining cost-effective local call rates.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS9049292B2Authentication to facilitate communication with roaming devices
Publication Date: 2015.06.02 CISCO TECHNOLOGY INC
  • US9049292B2 patent drawing
  • US9049292B2 patent drawing
  • US9049292B2 patent drawing

AI summary

In an embodiment, a mobile device that is configured to receive calls on a first telephone network via a first telephone number is configured to receive calls on a second telephone network via a second telephone number. A subscriber interface module (SIM) is installed into the mobile device enabling the mobile device to communicate with the second telephone network. A username, password, and telephone number for the second network are obtained. The mobile device registers the username, password, telephone number for the first network and telephone number for the second network with the first telephone network. A telephone call is received from the first telephone network and a personal identification code is employed to verify the registration.