Single Telephone Number Association for Multiple Devices

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Solution Overview

Problem

Users with multiple mobile telecommunication devices are restricted from registering them under a single public identity, forcing them to purchase separate lines and use different telephone numbers for each device, limiting convenience and flexibility.

Innovation Solution

Implementing a system that allows multiple user devices to be associated with a single telephone number through the Call Session Control Function (CSCF) node in the mobile telecommunication network, using IP Multimedia Private Identities (IMPIs) to select and register devices, enabling them to initiate and receive communications via a common number.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple mobile telecommunication devices are registered under separate public identities, then each device can independently access communication services, but users must purchase separate service lines and use different telephone numbers for each device, reducing convenience and flexibility

Engineering Contradiction:
Improvedevice registration flexibilityVSAvoidservice line management
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple device identities under a single public identity (telephone number) by implementing a many-to-one mapping relationship. Multiple IMPIs (device-specific identifiers) are associated with a single IMPU (public identity), allowing multiple devices to share one service line and telephone number while maintaining independent registration and access capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent enables a single public identity to serve multiple devices simultaneously, making the telephone number universal across different devices. The system allows any registered device to initiate and receive communications using the shared telephone number, providing multi-functionality to the service line.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If multiple devices share a single telephone number, then user convenience and flexibility are enhanced, but network registration and call routing complexity increases

Engineering Contradiction:
Improveuser convenienceVSAvoidnetwork registration system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary registration system that manages the mapping between multiple IMPIs and a single IMPU. This intermediary layer handles the complexity of device registration, authentication, and call routing, shielding users from the underlying system complexity while enabling convenient multi-device access.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the registration and authentication processes into device-specific components (IMPI) and public identity components (IMPU). This segmentation allows the network to independently manage device registrations while presenting a unified public identity to external networks, simplifying user interaction.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3202172B1Multiple device association with a single telephone number
Publication Date: 2023.06.07 T MOBILE US INC
  • EP3202172B1 patent drawingFigure 1
  • EP3202172B1 patent drawingFigure 2
  • EP3202172B1 patent drawingFigure 3

AI summary

Multiple user devices may be associated with a single telephone number to enable a user to initiate and receive communication via the single telephone number from any of the multiple user devices. An input is received at a service portal of a mobile telecommunication network. The input configures multiple user devices to share a common telephone number to initiate and receive communications. The input is stored as a device association profile in a device association data store that is accessible by a call session control function (CSCF) node of the mobile telecommunication network. The CSCF node then further determines based at least on the device association profile whether a user device is eligible to use the common telephone number to initiate and receive communications via the mobile telecommunication network.