DSDS Call Notification for Voice-Triggered Video Call Interruptions

Solution Overview

Problem

In dual SIM, dual standby (DSDS) configurations, ongoing data calls are interrupted or suspended when a voice call is received on the second SIM, causing unexpected termination of video calls without notification to the second user, leading to poor user experience and unnecessary resource consumption.

Innovation Solution

Implementing a notification system where the first wireless device alerts the second wireless device when a voice call is accepted during a data call, allowing the second device to manage the video call accordingly, such as by displaying a message or taking mitigating actions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a voice call is received on the second SIM during a data call on the first SIM in DSDS configuration, then the voice call can be accepted, but the ongoing data call is interrupted or suspended without notification to the second user

Engineering Contradiction:

ImproveAbility to handle both voice and data callsVSAvoidNotification information to second user

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent implements a feedback mechanism where the first wireless device detects when a voice call is accepted during an ongoing video call, and sends a notification message back to the second wireless device. This feedback loop informs the second user about the call state change, allowing them to take appropriate actions such as terminating or pausing the video call.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces a notification message as an intermediary carrier of information between the first and second wireless devices. This intermediary mechanism transfers the call state information from the first device to the second device, enabling the second user to be aware of and respond to the voice call acceptance without direct involvement in the call switching process.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the first wireless device accepts a voice call during a video call, then the voice call can be handled, but battery consumption and resource usage increase due to unexpected call termination

Engineering Contradiction:

ImproveVoice call acceptance capabilityVSAvoidBattery consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by notifying the second user in advance before the video call is terminated. When the first wireless device accepts a voice call during an ongoing video call, it sends a notification message to the second wireless device alerting the second user. This allows the second user to proactively terminate or pause the video call before it is forcibly interrupted, avoiding unnecessary resource consumption and battery drain from abrupt call termination.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If dual SIM dual standby configuration is used, then multiple SIMs can be monitored, but a single transceiver must be shared causing call interruptions

Engineering Contradiction:

ImproveMulti-SIM monitoring capabilityVSAvoidConnection continuity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the first wireless device detects when a voice call is accepted during an ongoing video call, and sends a notification message back to the second wireless device. This feedback loop informs the second user about the call state change, allowing them to take appropriate actions such as terminating or pausing the video call.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces a notification message as an intermediary carrier of information between the first and second wireless devices. This intermediary mechanism transfers the call state information from the first device to the second device, enabling the second user to be aware of and respond to the voice call acceptance without direct involvement in the call switching process.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12526612B2Techniques for managing connections for wireless devices configured for multiple subscriber identity module (SIM) environments

Publication Date: 2026.01.13 APPLE INC

AI summary

The embodiments set forth techniques for managing connections for wireless devices configured for multiple Subscriber Identity Module (SIM) environments, such as dual SIM, dual standby (DSDS) environments. A common scenario involves a first wireless device receiving a voice call (e.g., using a first SIM of the first wireless device) while carrying out a data call with a second wireless device (e.g., using a second SIM of the first wireless device). In such a scenario, the data call is often disrupted due to the voice call, which can cause confusion to a user of the second wireless device. Accordingly, the techniques disclosed herein include the first wireless device providing, in conjunction with receiving the voice call, a notification of the voice call to the second wireless device. In turn, the second wireless device can inform the user of the event to help mitigate the aforementioned confusion.