NFC-Based Call Transfer Between Remote Devices
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Solution Overview
Problem
In VoLTE environments, the ability to access and transfer calls between devices associated with the same telephone number poses security concerns and is cumbersome, prone to user errors, as unauthorized users can access calls from remote devices and transferring calls requires manual interaction across multiple devices.
Innovation Solution
Implementing a system that automatically transfers call control between devices via Near Field Communication (NFC) when they come into close proximity, preventing unauthorized access by only allowing transfer when devices are within NFC range, thus eliminating the need for manual user interaction and reducing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices are associated with a single telephone number to enable call transfer functionality, then call transfer capability is improved, but security risk increases due to unauthorized access from remote devices
Solution Approach 1:
The patent introduces NFC technology as an intermediary mechanism that mediates between the call transfer functionality and security requirements. The NFC proximity requirement acts as a mediator that allows call transfer between devices while preventing unauthorized remote access, as the receiving device must be in close physical proximity to initiate the transfer.
2Reliability
If manual user interaction is required for call transfer between devices, then security control is improved, but ease of operation deteriorates due to cumbersome multi-device interaction
Solution Approach 1:
The system performs call transfer automatically once devices are in proximity, eliminating the need for manual user interaction. The NFC detection and call transfer process occurs autonomously without requiring users to manually configure settings or initiate complex multi-device interactions, while still maintaining security through the proximity requirement.
Solution Approach 2:
The system performs preliminary proximity detection via NFC before executing the call transfer. This preliminary action ensures that the security condition (close proximity) is met before the actual call transfer operation commences, automating the security verification process.
3Reliability
If manual call transfer procedures are used, then user control is improved, but time consumption increases due to multiple interaction steps across devices
Solution Approach 1:
The system automates the entire call transfer process, performing detection, verification, and transfer execution automatically. This eliminates the time-consuming manual interaction steps while maintaining user control through the proximity-based security mechanism, reducing call transfer time from multiple manual steps to a single automatic process.
Data Source
AI summary
A first device may be unable to access a line hosting a call that has been placed on hold by a second device when the first device and second device are located remotely from each other. A server device may manage the status of the line to prevent the first device from accessing the line when the line is currently in control by the second device. When the first device and second device communicate via NFC, the line may be automatically released, so that the control of the line and of the call may be automatically transferred to the first device.