Seamless Session Transfer Between User Equipment Devices

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Solution Overview

Problem

Users face limitations in seamlessly transferring ongoing communications sessions, such as audio/video calls, between different user equipment devices without disrupting the call or notifying other participants.

Innovation Solution

A method and system that allows user equipment to register with an audio/video call system, subscribe to registration information of other devices, and initiate a seamless transfer of communications sessions between registered devices using protocols like SIP, ensuring continuity and privacy of the call.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a user transfers a communications session between devices, then device flexibility and user convenience are improved, but call continuity and session stability may be disrupted

Engineering Contradiction:

Improvedevice flexibilityVSAvoidcall continuity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary actions by establishing the communication session on the target device before fully terminating it on the source device. This ensures that the session is already active and stable on the new device before the switch occurs, maintaining call continuity without disruption to other participants.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The communication system acts as an intermediary that manages the session transfer process. It coordinates the handoff between devices, ensuring that the session parameters are properly transferred and that the transition occurs seamlessly without affecting the other party in the call.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If a communications session is transferred between devices, then user convenience is improved, but notification to other participants may be generated causing disruption

Engineering Contradiction:

Improveuser convenienceVSAvoidnotification disruption

Core Design Contradiction:

Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The notification mechanism is extracted and selectively applied. The system determines whether to notify other participants based on the transfer context, removing the automatic notification requirement for seamless transfers while maintaining notification capabilities when appropriate, thus avoiding unnecessary disruption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Different notification behaviors are applied to different transfer scenarios. The system evaluates the specific transfer context and applies notification only when necessary, allowing seamless silent transfers when the user prefers continuity without alerting other participants, while maintaining notifications for other cases.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11196779B2Transfer of a communications session to another user equipment

Publication Date: 2021.12.07 T MOBILE US INC

AI summary

This disclosure is directed to engaging in a communications session, such as an audio call, video call, and/or an audio/video (A/V) call, using a first user equipment (UE) and then seamlessly switching to a second UE while the communications session is in progress. The A/V call system may be configured to provide an indication to the first UE of other UEs that may be registered with it using a common user account. The first UE may enable a user to select another of his or her UEs to transfer the ongoing communications session. The first UE may send the A/V call system a request to transfer of the communications session. The A/V system may add the second UE to the communications session and disengage the first UE from the communications session.